RU228953U1 - Convertible Child Car Seat Unit - Google Patents

Abstract

A convertible child car safety seat assembly comprising an upper seat configured to be manipulated between an upright state and an extended state, and legs having distal ends with wheels and configured to be manipulated between a storage state which is configured to be combined only with an upright state of the upper seat in a first mode of the seat assembly, and an operating state providing the ability to roll the seat assembly by means of said wheels; wherein the extended state of the upper seat is configured to be combined only with an operating state of the legs in a second mode of the seat assembly, wherein the operating state of the legs and the upright state of the upper seat are also configured to be combined with at least one another. Alternatively or in addition, the convertible child car safety seat assembly may further comprise at least one of the following features: a mechanism for manipulating the seat and the legs configured to be activated at locations spaced apart along the length of the seat; a side protection module configured to be detachably attached to a handle of the seat assembly; a zipper device for releasably connecting the seat cover and the awning, and comprising a canopy zipper and a cover zipper. The wheels may be designed to be detachably attached to the respective far ends of the legs.

Description

AREA OF TECHNOLOGY

The utility model relates to a child safety seat assembly that can be used as a baby carrier and can be converted into one that can roll for use, for example, as a stroller.

LEVEL OF TECHNOLOGY

A child safety seat assembly of the type to which the present utility model relates is disclosed, for example, in US 8434781. As a rule, it comprises legs having distal ends with wheels, and is designed with the possibility of manipulation between a storage state in which the seat is designed with the possibility of installation inside the car, and an operating state providing the possibility of rolling the seat assembly by means of said wheels.

US9629476 discloses a device that can be converted from a baby cradle into a chair for an infant or child. The device has a frame assembly and a chair structure supported by the frame assembly. The chair structure defines a seating surface and is movable between at least an inclined position for sitting and a reclined position for sleeping.

ESSENCE OF A UTILITY MODEL

Thus, the object of the object described in the present document is to provide a child safety seat that is convertible into a ride-on seat for use, for example, as a stroller, while allowing, at least during such use, the use of a sitting and sleeping position of the seat.

According to a number of aspects of the present utility model, a convertible child car safety seat assembly is proposed, comprising a seat having a back support portion and a foot portion, wherein the seat is configured to be manipulated between an upright state, in which a first angle is formed between the back support portion and the foot portion, and an extended state, in which a second angle is formed between the back support portion and the foot portion, which is greater than the first angle; wherein the assembly additionally comprises legs having distal ends with wheels and configured to be manipulated between a storage state, which is configured to be combined with at least an upright state of the seat, allowing the seat assembly to be installed in a vehicle or on an external support surface in a position suitable for securing an infant therein, and an operating state, allowing the seat assembly to roll by means of said wheels.

The orientation of the back support in the vertical and extended states can also be specified by the angle it forms with an imaginary horizontal plane, and thus this angle in the former state will be greater than in the latter state.

The present application and claims of the utility model describe several features in relation to an imaginary horizontal plane, which may also be referred to as a “reference plane,” “base plane,” or the like.

Said seat unit additionally comprises a steering wheel, made with the possibility of rotation between different positions and having an adjustable length, which provides the steering wheel with the possibility of adopting a number of states in accordance with the mode in which the car safety seat unit is to be used. In particular, the steering wheel can adopt at least a carrying state, in which it is oriented generally vertically, and a stroller state, in which it extends forward and can have a length greater than in the carrying state. If necessary, the steering wheel can additionally adopt a storage state, in which it is oriented backwards and is located near the back support portion of the seat.

According to one aspect of the present utility model, the legs in the state of storing the legs can only be combined with the vertical state of the chair.

Thus, the chair assembly can be used in at least the following modes:

- a mode of installing the car seat, which may also be a storage mode of the said unit, in which the seat is in its upright state, the legs are in the storage state, and the handle is in any state suitable for the vehicle in which it is to be installed (for example, it may be in the storage state or it may be in an anti-rollback state, in which it has the same orientation as in the stroller state, but has a shorter length, providing the possibility of ensuring the stability of the car safety seat during and after possible front and rear collisions of the vehicle in which the seat is installed, wherein the child is facing the surface of the vehicle, such as the back of the seat, by minimizing the rotational forces associated with such collisions, thereby preventing the child's head from hitting this surface);

- a carrying mode with the possibility of rocking, in which the chair is in its vertical position, the legs are in working condition, and the handle is in the carrying state;

- an upright stroller mode in which the chair is in its upright position, the legs are in working condition, and the handle is in the stroller position; and

- extended stroller mode, in which the chair is in its extended position, the legs are in working condition, and the handle is in the stroller position.

According to an additional aspect of the present utility model, the extended state of the chair is designed to be combinable only with the working state of the legs in the second mode of the chair assembly, while the working state of the legs and the vertical state of the chair are also designed to be combinable at least with each other.

If necessary, the working state of the legs is designed with the possibility of combining with the vertical state of the chair in the third mode of the chair unit, wherein the chair unit can be transferred to its first and second modes only from its third mode.

If necessary, the convertible child safety seat assembly is designed in such a way that manipulation of the legs in the second mode of the seat assembly is prevented at least indirectly by keeping the seat in the extended state.

The manipulation of the chair in the first mode of the chair assembly can be prevented at least indirectly by keeping the legs in the storage state.

Alternatively or additionally, the convertible child car seat assembly may further comprise a device for preventing manipulation of the seat, configured to prevent manipulation of the seat from an upright state to an extended state at least when the legs are in the stored state.

Thus, in accordance with an additional aspect of the present utility model, a convertible child car safety seat unit is proposed, comprising a seat having a back support portion and a foot portion, a mechanism for manipulating the seat is proposed, configured to manipulate the seat between an upright state, in which a first angle is formed between the back support portion and the foot portion, and an extended state, in which a second angle is formed between the back support portion and the foot portion, which is greater than the first angle; and a device for preventing manipulation of the seat, configured to prevent manipulation of the seat from the upright state to the extended state, at least when the legs are in the storage state.

In any of the above aspects, the convertible child safety seat may further comprise a device for preventing manipulation of the legs, configured to prevent manipulation of the legs from the operating state to the storage state at least when the seat is in the extended state.

Thus, in accordance with yet another additional aspect of the present utility model, a convertible unit of a child car safety seat is proposed, comprising a mechanism for manipulating the legs, configured to manipulate the legs between their storage state and an operating state; and a device for preventing manipulation of the legs, configured to prevent manipulation of the legs from the operating state to the storage state at least when the seat is in the extended state. The convertible unit of a child car safety seat in accordance with this aspect may also comprise a device for preventing manipulation of the seat in accordance with the previously described aspect.

With respect to the device for preventing manipulation of the seat in the convertible unit of the child car safety seat according to any of the above aspects, it may have one or more of at least the following features in any combination thereof:

- the device for preventing manipulation of the chair can be designed with the possibility of changing its states between a locking state, in which the device for preventing manipulation of the chair prevents manipulation of the chair into the extended state, and an unlocking state, in which the device for preventing manipulation of the chair provides the possibility of manipulation of the chair between the vertical state and the extended state;

- the device for preventing manipulation of the chair may be designed to prevent manipulation of the chair in the locked state into the extended state by locking the chair;

- the device for preventing manipulation of the chair may be designed to prevent manipulation of the chair in the locked state into the extended state by locking the mechanism for manipulating the chair;

- the device for preventing manipulation of the chair may be designed with the possibility of locking the mechanism for manipulating the chair only when the chair is in its vertical state;

- a device for preventing manipulation of the chair may consist of legs in the storage state, for example, in the form of the far ends of these legs;

- when the back support portion of the chair in the vertical state is located at a first rear angle to the base plane, and in the extended state is located at a second rear angle smaller than the first rear angle, and the back support is designed with the possibility of being manipulated backwards from the vertical state to the extended state, the distal ends of the legs can be designed with the possibility of being tightly placed in the storage state of the legs in contact with the rear surface of the back support portion of the chair in such a way as to block the rear manipulation of the back support portion, thereby preventing the chair from being manipulated from the vertical state to the extended state, at least when the legs are in the storage state.

With respect to the device for preventing manipulation of the legs in a convertible child safety seat according to any of the above aspects, it may further have one or more of at least the following features in any combination thereof:

- the device for preventing manipulation of the legs may be designed to prevent manipulation of the legs from the working state to the storage state at least when the chair is in the extended state;

- the device for preventing manipulation of the legs can be designed with the possibility of changing its state between a locking state, in which the device for preventing manipulation of the legs prevents manipulation of the legs to the storage state, and an unlocking state, in which the device for preventing manipulation of the legs provides the possibility of manipulation of the legs between the storage state and the operating state;

- the device for preventing manipulation of the legs can be designed with the possibility of preventing manipulation from the locked state of the legs to the storage state by locking the legs;

- the device for preventing manipulation of the legs can be designed with the possibility of preventing manipulation in the locked state of the legs in the storage state by locking the mechanism for manipulating the legs;

- the device for preventing manipulation of the legs may be designed with the possibility of locking the mechanism for manipulating the legs when the legs are in their working condition;

- the device for preventing manipulation of the legs may consist of the chair in its extended position, for example, of the part for supporting the back of the chair.

When the convertible child car safety seat assembly according to any of the above aspects comprises a mechanism for manipulating the seat and a mechanism for manipulating the legs as described above, it may further comprise an actuator for manipulating the seat configured to allow the user to manipulate the mechanism for manipulating the seat, and at least one actuator for manipulating the legs configured to allow the user to manipulate the mechanism for manipulating the legs, wherein the actuator for manipulating the seat or the actuator(s) for manipulating the legs, either the first or the last, is located at a location associated with the front part of the seat assembly, and either the last or the first, respectively, is located at a location located at a distance in the rear direction from the front part of the seat assembly. For example, the actuator for manipulating the seat may be located on the front part of the lower support.

Thus, in accordance with yet another additional aspect of the present utility model, a convertible child car seat assembly is proposed, comprising a seat with a back support portion and a foot portion, legs, a mechanism for manipulating the legs configured to manipulate the legs between a storage state and an operating state, and a mechanism for manipulating the seat configured to manipulate the seat between an upright state in which a first angle is formed between the back support portion and the foot portion, and an extended state in which a second angle greater than the first angle is formed between the back support portion and the foot portion, wherein the seat assembly further comprises: an actuator for manipulating the seat configured to provide the user with the ability to manipulate the mechanism for manipulating the seat, and at least one actuator for manipulating the legs configured to provide the user with the ability to manipulate the mechanism for manipulating the legs, wherein the actuators for manipulating the seat and the legs are located, one in a location associated with the front part of the assembly, and the other in a location spaced apart in the longitudinal direction from it in order to reduce the risk of confusion. For example, the actuator for manipulating the chair may be located near the foot portion, and the actuator(s) for manipulating the legs may be located near the back support portion. In particular, the actuator for manipulating the chair may be in the form of a chair handle located in the most forward foot portion, and at least one of the actuators for manipulating the legs may be in the form of a leg handle located on the upper rear side of the back support portion.

In other words, when there is more than one actuator for manipulating the legs, each of them satisfies the above conditions regarding their location at a distance from the actuator for manipulating the chair.

In a convertible assembly of a child car safety seat according to any of the above aspects or with another additional aspect of the present utility model, the proximal portions of the legs may be pivotally connected to opposite side sides of the seat, and the assembly may further comprise at least one side protection module.

Each module(s) of side protection may be installed on the respective left and right side of the seat. The seat may consist of a lower support and an upper part of the seat, which are designed and configured to work together similarly to any of the above aspects. In some examples, the seat may consist of a lower support and an upper part of the seat, which are made in one piece or as a single piece. When the seat assembly is in its storage or installation mode on the car seat and is located inside the car near the side door of this car, in the scenario of an impact from the side of the car door on said assembly, the side protection module installed on the side of the assembly facing the door of the car will absorb at least a part of the energy of this impact, thereby preventing injury to a child sitting in said assembly.

Thus, in accordance with an additional aspect of the present utility model, a convertible unit of a child car seat is proposed, wherein the seat has a part for back support and a part for feet; the handle is connected to the seat in the area of attachment of the seat handle by means of a rotary fastening, which provides the possibility of rotation of the handle between a plurality of different states, wherein said handle has a region facing the seat, facing the area of attachment of the handle, and an opposite outwardly facing region; and a side protection module for absorbing at least part of the impact energy on it, wherein the side protection module is designed with the possibility of selective installation on the handle in the outwardly facing region.

In a convertible unit of a child car seat according to any of the above aspects or any of the aspects described below, the back support part and the foot part can be manipulated in various ways to change the states of the seat between the vertical and extended states. For example, the back support part and the foot part can be mounted on a lower support comprising a rear hinge part on the rear part of the lower support, to which the back support part is connected with the possibility of a hinge rotation, and a front hinge part on the front part of the lower support, with which the foot part of the upper seat is made with the possibility of a sliding hinge connection, wherein the change of the seat between the vertical state and the extended state is achieved by means of a rotary hinge connection of the back support part, accompanied by a sliding hinge connection of the foot part.

Thus, in accordance with yet another additional aspect of the present utility model, a convertible child safety seat assembly is provided, comprising:

a lower support having a front and a rear portion and a support plane horizontally extending through the lowermost region of the lower support; an upper seat connected to said lower support and having a back support portion connected to the rear portion of the lower support and a foot portion connected to the front portion of the lower support; wherein the upper seat is configured to be manipulated between an upright state in which a first angle is formed between the back support portion and the foot portion, and an extended state in which a second angle greater than the first angle is formed between the back support portion and the foot portion; legs having wheels, wherein the legs are configured to be manipulated between a storage state in which at least the wheels are located above the support plane; and an operating state in which at least the wheels are located below the support plane so as to allow the chair assembly to roll by means of said wheels; the lower support comprises a rear hinged portion on the rear portion of the lower support, to which the back support portion is connected with the possibility of hinged rotation, and a front hinged portion on the front portion of the lower support, with the possibility of a sliding hinged connection to which the foot portion of the upper chair is made, wherein the change in the state of the upper chair between the vertical state and the extended state is achieved by means of a rotary hinged connection of the back support portion, accompanied by a sliding hinged connection of the foot portion. The back support portion can be hinged with the possibility of rotation around a rotation axis that is perpendicular to the longitudinal axis of the lower support, and the foot portion can be hinged with the possibility of sliding movement along the longitudinal axis of the lower support. The back support portion and the foot portion can be connected to each other in such a way that manipulation of one of them causes manipulation of the other.

In all the above aspects, the chair may optionally comprise an upper chair and a lower support to which the upper chair is pivotally connected and on which it is mounted in such a way as to ensure that the upper chair can assume the above-described vertical and extended states in the corresponding modes of the chair assembly. In addition or as an alternative, the part for supporting the back of the chair or the upper chair in the case where the chair also comprises a lower support may comprise an intermediate part to which the foot part is connected and which is designed with the possibility of moving around a vertical axis when manipulating the chair or the upper chair between the vertical state and the extended state.

In all of the above aspects, the back support portion of the chair may comprise a shell having an upper edge, wherein the shell or at least a portion thereof near the upper edge is made of a plastic material and is also designed with the possibility of sewing to it near the upper edge at least one zipper for attaching to said shell a fabric for covering at least a back support portion and/or an awning.

Thus, in accordance with yet another additional aspect of the present utility model, a child seat is proposed, comprising at least in operation:

a shell made of a plastic material and having an outer side facing outward and an inner side on which a fabric seat cover can be attached to the shell, the shell having a back wall and two side walls, each of which has corresponding inner and outer surfaces that are united at corresponding upper edges, the upper edges of the back wall and the side walls being continuously united and constituting the upper edge of the shell,

wherein the fabric covering is intended to cover at least the inner side of the shell when the fabric covering is detachably connected to it;

awning and

a zipper device for releasably connecting the cover and awning to the shell near the upper edge of the shell, wherein the zipper device comprises an awning zipper and a cover zipper, and each of the zippers is of a separable type and comprises a zipper box and a zipper pin and has

a half of the casing zipper with one of the casing zipper body and the casing zipper pin, sewn to the casing near the upper edge of the casing on the outer surfaces of the back wall and the side walls at least along their parts near the back wall, and

a mating half of the zipper with the other of the zipper box and the zipper pin, wherein the mating half of the first zipper is sewn to the said covering, and the mating half of the second zipper is sewn to the said awning.

If desired, the zipper box may be located on the zipper half of the shell and the zipper pin may be located on the mating zipper half.

The above-mentioned child seat, comprising any of its optional features listed below, may form part of a convertible unit of a child car safety seat in accordance with each of the previously described aspects of the present utility model, as well as any other unit of a child car safety seat. It may also form part of any other child carrier or stroller or the like.

A child seat according to this aspect of the present utility model may comprise one or more of at least the following features in any combination thereof:

- the half of the zipper of the shell of each of the zippers may have a base part in which the half of the zipper of the shell is sewn to the shell, and a flap part with zipper teeth, wherein both halves of the zipper of the shell of the two zippers may be sewn to the shell on the base parts of the halves of the zipper of the shell in such a way that it is possible to manipulate the flap parts of the halves of the zipper of the shell separately and independently of each other when the corresponding mating halves of the zippers interact;

- half of the zipper of the cover zipper shell may be located at a first distance from the upper edge of the shell, and half of the zipper of the awning zipper shell may be located at a second distance from the upper edge of the shell, less than the first distance;

- half of the zipper of the cover zipper shell may extend along at least part of the upper edge of the shell, and half of the zipper of the awning zipper shell may extend along part of the half of the zipper of the cover zipper shell;

- when attaching both the cover and the awning to the shell using a zipper, the awning zipper may overlap the cover zipper along the length of the awning zipper;

- the zipper boxes of the halves of the shell of the two zippers may be located on different side walls of the shell or next to them, ensuring the possibility of attaching the zipper of the cover in the direction opposite to the direction of the zipper of the awning;

- both halves of the shell zipper may be sewn to the shell together, at least indirectly, by means of at least one common sewing seam;

- the upper edge of the shell may contain a stepped recess for accommodating a zipper, having a first wall on which the halves of the zipper shell are sewn to the shell, and a second wall oriented transversely to the first wall and having a height that specifies the depth of said recess;

- the zipper device may additionally comprise a fabric connection by means of a binder, accommodating the base parts of the halves of the shell and sewn to the shell using at least one common sewing seam; in this case, said connection with the base parts of the halves of the zipper of the shell may have a thickness corresponding to the depth of the recess for accommodating the zipper;

- the base parts of the halves of the zipper of the shell can be connected to each other by means of a pre-formed connection in addition to said at least one common sewing seam, wherein said pre-formed connection can, if necessary, be formed by means of welding and/or sewing;

- the cover zipper may be longer than the awning zipper and may extend further down along each of the two side walls of the shell relative to the awning zipper;

- when the awning is attached, only the awning zipper can be unfastened, and the cover zipper remains at least partially inaccessible.

In a convertible unit of a child car safety seat according to any of the above aspects or according to another additional aspect of the present utility model, said unit, when in the storage mode and located on the outer support surface, can be made with the possibility of swinging on it between a neutral position and at least one of the forward and rear inclined positions. At least some of the areas of the unit that are in contact with the outer support surface during swinging on it can be made of a material that improves at least one quality of swinging compared to that which said area would have if it were made of the material from which some other areas are made that would not be in contact with the outer support surface during swinging.

Thus, in accordance with an additional aspect of the present utility model, a convertible child car safety seat unit is proposed, suitable for securing an infant therein and having a first storage mode, in which the unit is suitable for placement in a car, and a second operating mode, in which the unit is configured to roll along an outer support surface, wherein the unit, when in the storage mode and located on the outer support surface, is configured to rock thereon between a neutral position and at least one of the front and rear inclined positions, wherein the unit comprises: one or more lowermost regions that are configured to make contact with the outer support surface in the neutral position; at least one of the front and rear regions, which is configured to make contact with the outer support surface when in said corresponding at least one of the front and rear inclined positions; a horizontal support plane containing said one or more lowermost regions of the unit when it is in the neutral position and imaginarily representing said outer support surface; a lower support having a front and a rear part, and the lowest region of the chair closest to the horizontal support plane when the assembly is in a neutral position; an upper chair connected to said lower support and having a back support part connected to the rear part of the lower support and a foot part connected to the front part of the lower support; legs connected to the lower support at their near ends and having far ends with wheels attached thereto at least in the operating mode, wherein the legs are designed with the possibility of manipulation between a storage state associated at least with the storage mode of the assembly, in which at least a part of each leg with a wheel is located above the supporting plane, and an operating state associated at least with the operating mode of the assembly, in which at least said part of each leg with a wheel is located under the supporting plane in such a way as to ensure the possibility of rolling the chair assembly by means of said wheels; wherein the legs comprise a pair of rear legs and a pair of front legs; the legs of at least one of the pairs have such a curved shape that, in the storage state, the legs of said at least one pair have a first region located above the support plane in a neutral position, at least one second region constituting said at least one of the front and rear regions, and at least one third region located at a distance from the first and second regions, wherein at least the second region has a part participating in the swing, made of a material different from the material of said at least one third region, wherein said material is made in such a way as to improve at least one quality of swing compared to that which said part participating in the swing would have if it were made of the material from which the third region is made.

In a convertible child safety seat assembly according to any of the above aspects or according to a further additional aspect of the present utility model, at least the front wheels may be connected to the front legs by means of a quick release mechanism, thereby ensuring the possibility of removing the front wheel at least when the assembly is to be placed in a vehicle.

Thus, in accordance with yet another additional aspect of the present utility model, a convertible child car safety seat assembly is proposed, comprising: a lower support having a front and a rear portion, and a support plane horizontally extending through the lowest region of the lower support; an upper seat connected to said lower support and having a back support portion connected to the rear portion of the lower support, and a foot portion connected to the front portion of the lower support; legs having wheels, wherein the legs are configured to be manipulated between a storage state, in which at least the wheels are located above the support plane, and the assembly is configured to be placed in a vehicle or on a support surface in a position suitable for securing an infant therein, and an operating state, in which at least the wheels are located under the support plane in such a way as to ensure the possibility of rolling the seat assembly by means of said wheels; the legs comprise a pair of rear legs connected to rear wheels and a pair of front legs connected to front wheels, wherein the front wheels project away from the lower support in its storage state to a greater extent than the rear wheels, at least in the rear view of said unit; said front legs are rotatable for manipulation from the working state to the storage state in such a way that in the storage state, said front wheels are located closer to the back support portion than to the foot portion; wherein at least the front wheels are connected to the front legs by means of a quick release mechanism.

BRIEF DESCRIPTION OF DRAWINGS

In order to provide a better understanding of the essence of the present utility model and to illustrate its implementation in practice, a description of embodiments of the utility model is provided below as non-limiting examples with reference to the accompanying drawings, in which:

Fig. 1A, 1B, 1C and 1D illustrate a side view of a child safety seat assembly according to one example of the present utility model in a respective car seat installation or storage mode, an extended stroller mode, an upright stroller mode and a rollable carry mode in which the said assembly can be used;

Fig. 1E is a diagram illustrating possible transitions between the modes shown in Figs. 1A-1C/1D;

Fig. 2A is a front perspective view of a lower support that may be used in a child safety seat assembly according to one example of the present invention;

Fig. 2B is a view of one side wall of the lower support shown in Fig. 2A, taken along the direction A-A in Fig. 2A, perpendicular to the inner surface of the side wall;

Fig. 3A is a perspective front view of an upper seat without a cover that can be used together with the lower support shown in Figs. 2A and 2B in a child safety seat assembly according to one example of the present utility model, wherein the upper seat is in an upright position;

Fig. 3B is a side view of the upper seat of Fig. 3A;

Fig. 3C is a perspective side view in section of the upper seat shown in Fig. 3A, viewed in the direction B-B in Fig. 3A, perpendicular to the plane of section;

Fig. 3D is a perspective front view of the upper seat shown in Figs. 3A-3C, with the upper seat in the extended position;

Fig. 3E is a side view of the upper seat of Fig. 3D;

Fig. 4A is a perspective view from above of a seat assembly having the upper seat shown in Figs. 3A-3E mounted on the lower support shown in Figs. 2A and 2B, the upper seat being in the upright position shown in Figs. 3A-3C and the foot portion thereof being removed for ease of illustration;

Fig. 4B is an enlarged perspective view of region 4B of the chair assembly shown in Fig. 4A, comprising a mechanism for manipulating the chair and a device for preventing manipulation of the chair, with the foot portion of the upper chair removed for ease of illustration;

Fig. 4C is an enlarged view of region 4C of the seat assembly shown in Fig. 4B;

Fig. 4D is an enlarged view of region 4D of the seat assembly shown in Fig. 4A;

Fig. 4E illustrates the region shown in Fig. 4D when the upper seat of the seat assembly is in the extended state as shown in Figs. 3D and 3E;

Fig. 4F is a close-up view of the near end of a leg of a child safety seat assembly according to one example of the present utility model, the leg being shown in its working condition;

Fig. 4G shows the near end of the leg of Fig. 4F, the leg being shown in its storage condition;

Fig. 5A is a rear perspective view of the seat assembly shown in Fig. 4A;

Fig. 5B is an enlarged view of the region 5B shown in Fig. 5A, comprising a mechanism for manipulating the legs and a device for preventing manipulation of the legs;

Fig. 5C illustrates region 62 of the chair shown in Fig. 5B when the upper seat of the chair assembly is in the extended state;

Fig. 6 is a rear perspective view of the chair assembly of Fig. 4A illustrating a device for preventing manipulation of the chair in accordance with another example of the present utility model;

Fig. 7A is a rear perspective view schematically illustrating a child safety seat assembly in a storage mode according to one example of the present invention, comprising a side protection module;

Fig. 7B is a rear view schematically illustrating two child safety seat assemblies, each of which is stored inside a vehicle in accordance with one example of the present invention, each comprising a side protection module;

Fig. 7C is a side view of a child safety seat assembly in storage mode with the handle in an anti-rollback position according to one example of the present utility model comprising a side protection module;

Fig. 7D and 7E are side views of the child safety seat assembly of Fig. 7C with the handle in the carrying state and the storage state, respectively;

Fig. 7F illustrates various views of the handle and side protection module of the child safety seat assembly of Fig. 7C;

Fig. 7G illustrates various views of a side protection module having two module parts in accordance with one example of the present utility model;

Fig. 7H is a perspective side view of a side protection module further connected to the handle by means of a cable connection device in accordance with one example of the present utility model;

Fig. 8A is a front perspective view of a child safety seat in an upright operating mode according to one example of the present invention;

Fig. 8B is a perspective view of the rear of a seat assembly according to one example of the present utility model with an awning attached thereto;

Fig. 9 is an enlarged perspective view of a portion of the upper seat with a zipper device in the seat assembly in accordance with one example of the present utility model, with a fabric covering attached thereto by means of a zipper over most of the length of the zipper;

Fig. 10 shows the same view as Fig. 9, but without the fabric covering;

Fig. 11 is a schematic cross-sectional view of a device that may have a zipper for installing a fabric cover and an awning on the back support of a child seat in accordance with an additional example of the present utility model;

Fig. 12A is a side view of a child safety seat assembly in storage mode according to one example of the present invention, shown in its neutral position;

Fig. 12B is a side view of the child safety seat assembly of Fig. 12A shown in its rearward reclined position;

Fig. 12C is a perspective side view of the child safety seat assembly of Fig. 12A shown in its rearward reclined position;

Fig. 12D is a perspective side view of the child safety seat assembly of Fig. 12A shown in its neutral position;

Fig. 12E is a perspective view from below of the child safety seat assembly of Fig. 12A;

Fig. 13A is a perspective front view of a child safety seat assembly in a storage mode in accordance with one example of the present utility model;

Fig. 13B is a rear perspective view of the child safety seat assembly of Fig. 13A;

Fig. 13C is a rear view of the child safety seat assembly of Fig. 13A;

Fig. 13D is the same view as Fig. 13A, with the front wheel removed from the corresponding front leg;

Fig. 13E is a view similar to Fig. 13B, with both front wheels removed from their respective front legs; and

Fig. 13F illustrates the front legs and the front wheels removed from them of the child safety seat assembly of Fig. 13A.

IMPLEMENTATION OF A UTILITY MODEL

A convertible child car seat assembly according to one example of the present invention may be any seat assembly configured to be used in the operating modes as illustrated in Fig. 1A-1D. These operating modes are the car seat installation mode shown in Fig. 1A, which will be referred to hereinafter as the storage mode 20; the extended stroller mode shown in Fig. 1B, which will be referred to hereinafter as the extended operating mode 24; the upright stroller mode shown in Fig. 1C, and the rocking carrier mode shown in Fig. 1D, which will be referred to hereinafter as the upright operating mode 22.

In the present example, the convertible assembly of the child car safety seat shown in Fig. 1A-1D is designated as 10 and comprises a lower support 30, an upper seat 50 pivotally connected to the lower support 30 and mounted thereon, legs 70 having distant ends 71 connected to wheels and near ends 72 connected with the possibility of pivoting with the lower support 30, and a steering wheel 12 configured to rotate between a plurality of positions, as shown in Fig. 1A-1D.

The steering wheel can have an adjustable length, which allows the steering wheel to take a number of positions in accordance with the mode in which the car seat unit is to be used.

The handlebar 12 of the present example can have at least a carrying state (Fig. 1D), in which it is oriented generally vertically (Fig. 1D), a stroller state (Figs. 1B and 1C), in which it extends forward and can have a length greater than in the carrying state, and a storage state, in which it is oriented backwards (Fig. 1A).

The lower support 30 comprises the lowest region 32 of the chair, which is designed to make contact with the support surface 26, which may be, for example, a vehicle seat or a base securely installed thereon or on the ground, on which the chair unit is designed to be used as a safety chair. The support surface 26 is designed to be able to install/place the chair unit 10 on it in the storage mode 20. The lowest zone 32 of the chair defines an imaginary horizontal base plane 34 and additionally comprises two areas 42 for attaching legs, to which the near ends 72 of the legs are connected with the possibility of a hinge rotation between the following two states:

(a) a storage state (Fig. 1A) in which the distal ends of the legs are positioned on or above the horizontal base plane 34 such that the lowermost region 32 of the seat of the seat assembly 10 can make contact with the support surface 26 on which the seat assembly is to be installed or positioned; and

(b) an operating state (Fig. 1B, 1C and 1D), in which the chair assembly can be rolled using wheels located below the horizontal base plane 34 on the support surface 26.

The upper seat 50 comprises a rear portion 52 for back support and a front portion 54 for feet, which is located at a smaller distance from the horizontal base plane 34 than the portion 52 for back support. The portion 52 for back support is designed to support the head and back of an infant sitting on the seat assembly 10, and for better head support it can be provided with a headrest assembly 53, designed with the ability to adjust between the default position and the raised position, as is known in the art.

The upper seat 50 is configured to be manipulated between the following two states:

(a) an upright state (Fig. 1A, 1C and 1D) providing a sitting position for an infant secured in the upper seat 50, in which the back support portion 52 has a first orientation and forms a first angle α with the foot portion 54; and

(b) an extended state (Fig. 1B) providing a recumbent position for an infant secured in the upper seat 50, in which the back support portion 52 has a second orientation closer to a horizontal orientation than the first orientation and forms with the foot portion 54 a second angle β greater than the first angle α.

In particular, the first angle α may be approximately 90-130 degrees, and the second angle β may be approximately 140-170 degrees.

In general, the seat assembly may be designed to provide a plurality of combinations between the above-mentioned states of the upper seat and the legs, while preventing at least one such combination. For example, such a prevented combination may be a combination of the storage state of the legs and the extended state of the upper seat, thereby preventing the seat assembly from being inserted into a vehicle with a child lying therein.

According to the last example and as illustrated in Fig. 1E, the seat assembly 10 is configured to provide a combination of the extended state of the upper seat 50 only with the working state of the legs 70. Thus, the seat assembly is configured to manipulate the upper seat 50 between the vertical state and the extended state only when the legs 70 are in their working state. Such manipulations can occur during the transition between the vertical working mode 24 and the extended working mode 22. The seat assembly 10 is also configured to provide a combination of the stored state of the legs 70 only with the vertical state of the upper seat 50. Thus, the seat assembly is configured to manipulate the legs 70 between the working state and the stored state only when the upper seat 50 is in its vertical state. Such manipulations can occur during the transition between the vertical working mode 24 and the stored mode 20.

Consequently, in the vertical operating mode 24 of the chair assembly, the operating state of the legs 70 is configured to be combined with the vertical state of the upper chair 50, and the chair assembly can be transferred to its first, storage mode 20, and the second, extended operating mode 22, only from its third, vertical operating mode 24.

Non-limiting examples of designs of the lower support 30 and the upper seat 50, as well as their assembly and method of operation, providing the above-mentioned combinations of positions of the legs and the upper seat, will be described in detail below with reference to the corresponding drawings.

In general, the main structure of the lower support may comprise at least one hinged part, with the possibility of a hinged connection to which at least a part of the upper seat is made in such a way as to ensure the possibility of changing its state between the vertical and extended states.

The lower support may comprise rear and front hinged parts, to which the back support part and the foot support part of the upper chair may be hingedly attached, respectively. The hinged part (parts) may be configured to provide the same or different types of hinged connection with the corresponding part (parts) of the upper chair, i.e. both may be configured to provide a rotary or linear hinged connection, or rather, one of them may provide a rotary hinged connection, and the other - a linear hinged connection of the corresponding part of the upper chair. In particular, the lower support may comprise a rear hinged part on the rear part of the lower support, with which the back support part is made with the possibility of a rotary hinged connection, and a front hinged part on the front part of the lower support, with which the foot support part of the upper chair is made with the possibility of a sliding hinged connection.

The lower support may be in the form of an asymmetrical bowl comprising a lower portion, a high rear wall and a low front wall, located at a distance from each other along the longitudinal axis of the lower portion, and two side walls extending between them generally parallel to this axis, which is best seen in a side view of each side wall taken perpendicular to its inner surface. The rear and front walls may generally extend in a direction away from each other, as seen in a side view of the lower support, such that the distance between them along the longitudinal axis increases in a direction away from the lower portion of the lower support.

The rear hinge part may be located on the rear regions of the side walls of the lower support, for example, closer to the upper part of the side walls than to the lower part of the lower support, and the front hinge part may be located on the front wall of the lower support. Thus, the part for supporting the back of the upper chair may be designed with the possibility of a rotary hinge connection with the rear hinge part around an axis perpendicular to the longitudinal direction D of the lower support, and the part for the feet of the upper chair may be designed with the possibility of a sliding hinge connection with the front hinge part along this longitudinal direction.

In the present example, the lower support 30, shown in detail in Fig. 2A and 2B, comprises a lower part 33, constituting its lowermost region, a high rear wall 36, a low front wall 37, wherein the front and rear walls extend from said lower part and from each other in the longitudinal direction D of the lower support 30, and two side walls 35 are oriented generally parallel to the direction D and have upper rear regions 31.

The lower support 30 additionally comprises a rear hinge part 38 on the upper rear regions 31 of the side walls 35, with the possibility of a rotary hinge connection around the axis of rotation (not shown), perpendicular to the longitudinal direction D of the lower support, with which the part 52 for supporting the back is made, and a front hinge part 39 on the front wall 37, with the possibility of a sliding hinge connection along the longitudinal direction with which the part 54 for the feet of the upper chair 50 is made.

In particular, in the present example, the rear hinge part 38 is made in the form of hinge recesses located in the upper rear regions 31 of the side walls 35 and made with the possibility of freely placing in them one or more hinge elements of the part 52 for supporting the back of the upper chair 50 in such a way as to ensure the possibility of turning these elements with the back support around the axis of rotation, and the front hinge part 39 is made in the form of elongated hinge grooves 39A and 39B, extending parallel to the longitudinal direction D and made with the possibility of slidingly placing in them the corresponding hinge element of the part 54 for the feet of the upper chair 50.

As indicated above, the lower support 30 comprises two leg attachment areas 42 (one of which is shown in Figs. 2A and 2B) to which the near ends 72 of the legs 70 are pivotally connected between the operating state and the stored state of the legs 70 and a leg manipulation mechanism (not shown in Figs. 2A and 2B) configured to lock the legs 70 in any of their stored and operating states and to unlock them to allow manipulation between the states. Various designs of the leg manipulation mechanism that provide the above-mentioned locking device may be used, including, but not limited to, any of those described, for example, in US 8,469,389 and US9,505,321 of the present Applicant, and the description of these designs is incorporated herein by reference.

The upper seat of the seat assembly according to the present utility model has a structure providing the possibility of a hinged connection of at least a part thereof with one or more of the hinged parts of the lower support, as described above, to provide the possibility of changing the state of the upper seat between the vertical and extended states. In particular, when the lower support comprises rear and front hinged parts, the back support part and the foot part of the upper seat may have hinged elements configured to be hinged with the hinged parts of the lower support, respectively, as required. For example, the hinged element of the back support part of the upper seat may be configured to be pivotally hinged with the rear hinged part of the lower support, and the hinged element of the foot part of the upper seat may be configured to be slidingly hinged with the front hinged part of the lower support. The back support part and the foot part of the upper seat may also be hinged to each other in such a way that the movement of one of them will cause manipulation of the other.

In Fig. 3A-3E an upper chair without a cover is illustrated, which can be used together with the lower support illustrated in Fig. 2A and 2B. In Fig. 3A, 3B and 3D, 3E the back support part of the upper chair is shown in the respective upright and extended states with the respective first angle α and second angle β mentioned above with reference to Fig. 1B, 1C and 1D.

As shown in Fig. 3A-3E, the hinge element of the back support portion 52 of the upper chair 50 consists of a rear pivot axis 38A, formed as a single unit or assembled with the back support portion and having ends that are freely received in the recesses of the rear hinge portion 38 of the lower support 30 in such a way as to ensure the rotation of said axis with the back support portion between its close to vertical orientation (i.e. vertical state) and close to horizontal orientation (i.e. extended state). The hinge element of the foot portion 54 of the upper chair 50 consists of a sliding bar 56, made as a single unit or assembled with the foot portion 54 and made with the possibility of sliding placement inside the hinge grooves 39A and 39B of the lower support 30 in such a way as to ensure the possibility of moving the sliding bar 56 with the foot portion 54 between the extreme positions of the sliding bar 56 inside the grooves 39A and 39B, corresponding to the innermost and outermost positions of the foot portion 54. The close to vertical orientation of the back support portion 52 and the innermost position of the foot portion 54, as well as the close to horizontal orientation of the back support portion 52 and the outermost position of the foot portion 54 correspond to the vertical and extended states of the upper chair 50, respectively.

In general, the back support portion and the foot portion of the upper chair may be directly or indirectly connected to each other. Alternatively, the back support portion and the foot portion may be separately connected to the lower support without being connected to each other. In case the back support portion and the foot portion are connected to each other, they may be hinged directly or indirectly via an intermediate back support portion to allow rotation/manipulation of one of said portions while the other portion is being manipulated/rotated. In addition, the back support portion and the foot portion may be fixedly connected to each other to cause manipulation of one portion by manipulation of the other portion.

In the present example, the upper seat 50 also comprises an intermediate portion 57, which rigidly connects the back support portion 52 and the foot portion 54 to each other. In particular (as best shown in Fig. 3C), the intermediate portion 57 consists of the lower back support portion 52, extends forward from its lower edge 58 and is designed to be rigidly connected at its front edge 59 to the foot portion 54. The intermediate portion 57 is concave and is designed to accommodate the lower part of an infant sitting on the upper seat 50. The intermediate portion 57 is made of a flexible material so as to allow it to bend when manipulating the upper seat 50 into an extended state, in which the intermediate portion 57 will be less concave than in the vertical state.

The back support portion 52 and the foot support portion 54 are also pivotally connected to each other by means of a pivot element consisting of a front pivot axis (not shown) having ends that are freely accommodated in lateral intermediate openings 38B formed in the side walls 35 of the lower support 30. This pivot connection defines a horizontal axis X connecting the lateral intermediate openings 38B, around which the back support portion 52 and the foot support portion 54 rotate.

In general, the upper chair may further comprise a mechanism for manipulating the chair, configured to cause the upper chair to change its state between the vertical and extended states, as described above with reference to Fig. 1A-1D. This mechanism may be configured to cause manipulation of only the back support portion of the upper chair while maintaining an unchanged position of the foot portion (to provide different orientations of the back support in the vertical state of the upper chair), and/or to cause movement of each of the back support portion and the foot portion, or to cause movement of the foot portion, which, in turn, causes movement of the back support portion (in both latter cases - to change the state of the upper chair between its vertical and extended states). The mechanism for manipulating the chair may comprise an actuator for manipulating the chair, located in a location accessible for actuation by the user.

In the present example illustrated in Fig. 4A-4C, the mechanism for manipulating the chair of the upper chair 50 is designated as 60 and comprises an actuator 61 for manipulating the chair for activating the manipulation of the upper chair 50 in order to change its position, and a mechanism 63 for locking the chair to prevent a change in the state of the upper chair.

The actuator 61 for manipulating the chair consists of a handle 62 of the chair, located in the most forward part 54 for feet. The handle 62 of the chair comprises an outer part 62A of the chair handle, made with the possibility of gripping the handle 62 of the chair by the user, and an inner part 62B of the chair handle, connected to the part 54 for feet with the possibility of movement in such a way as to ensure the possibility of movement of the part 54 for feet between its innermost and outermost positions and the corresponding movement of the part 52 for supporting the back between the vertical state and the extended state, respectively, by applying the corresponding pushing and pulling forces to the handle by the user.

In general, the mechanism for handling the chair may further comprise a mechanism for locking the chair, configured to selectively prevent the upper chair from changing its state between the vertical and extended states. In particular, the mechanism for locking the chair may have a locking state, in which the mechanism for locking the chair prevents the upper chair from moving and, thus, changing its state, and an unlocking state, in which the mechanism for locking the chair allows the upper chair to move and, thus, change its state. The mechanism for locking the chair may be configured to selectively lock at least one part of the upper chair relative to at least one part of the lower support and, in particular, relative to at least two different parts of the lower support. The mechanism for locking the chair may be configured with a first locking part located on the lower support and a second locking part located in a mating position on the back support part and configured to interact with the first locking part for selectively locking the back support part relative to the lower support. The lower support may be provided with more than two different parts, relative to which the upper seat is subject to locking, to provide the possibility of gradual manipulation of the upper seat between its vertical and extended states by means of a mechanism for locking the seat, while providing the possibility of locking the upper seat relative to the lower support in a plurality of states between the vertical state and the extended state and including them.

With reference to Fig. 4A, 4D and 4E, the mechanism 63 for locking the chair is designed to selectively lock the upper chair 50 relative to the lower support 30 so as to prevent a change in its state. For this purpose, the mechanism 63 for locking the chair comprises a first locking part 63A located on the lower support 30 and a second locking part 63B located on the back support part 52, designed to interact with the first locking part 63A for selectively locking the back support part 52 relative to the lower support 30.

In particular, the first locking portion 63A of the mechanism 63 for locking the chair comprises an elongated guide groove 41 and a plurality of locking holes 42A-42C, all of which are formed on the inner surface 35A of each of the side walls 35. (The outer surface of the side walls 35 is generally designated as 35B). The holes 42A-42C are located at a distance from each other along a direction parallel to the elongated guide groove 41. The elongated guide groove 41 is formed curved and has a curvature similar to the curvature along which the lower edge 58 of the back support portion moves along its movement between the vertical and extended states. The extended guide groove 41 is designed with the possibility of slidingly receiving therein the corresponding guide element of the second locking part 63B, providing the possibility of its taking various positions along the groove, and the openings 42A-42D are designed with the possibility of receiving therein the corresponding locking element of the second locking part 63B, when the guide element takes the corresponding position in the extended guide groove 41, for locking the upper chair 50 relative to the lower support. The openings 42A-42D of the first locking part 63A are also designed with the possibility of providing the upper chair 50 with at least one, and in the present example two additional intermediate states between the vertical state and the extended state, so as to provide the possibility of additional orientations.

The second locking part 63B of the mechanism 63 for locking the chair, located on the upper chair 50, comprises two pin holders 64 (only one is visible), attached to the back support part 52 between the back support part 52 and the lower part 33 of the lower support and located near the inner surfaces 35A of the various side walls 35, designed with the possibility of simultaneous operation when the actuator 61 is actuated. Each pin holder 64 comprises a guide pin 66 and a locking pin 68, passing through the pin holder 64 as a whole perpendicular to the direction D and parallel to each other. Each guide pin 66 and locking pin 68 comprises an actuated portion 67A extending from the inner side of the corresponding pin holder 64 (that is, away from the nearest side wall 35), and a locked portion 67B extending from the outer side of the pin holder 64 (that is, towards the nearest side wall 35) and configured to interact with the first locking portion 63A.

The lockable portion 67B of the guide pin 66 is designed with the possibility of being at least partially located inside the elongated guide groove 41 and with the possibility of sliding movement therein to guide the manipulation of the portion 52 for supporting the back between states. In the present example, the lockable portion 67B of the guide pin 66 is retained inside the elongated guide groove 41. The locking pin 68 is located and configured to be inserted into and removed from any of said plurality of openings 42A-42C to fix the back support portion 52 in each of the states of the upper chair 50, including the vertical state (that is, when the lockable portion 67B of the locking pin 68 is in the opening 42A), the extended state (that is, when the lockable portion 67B of the locking pin 68 is in the opening 42C) and at least one intermediate state between them (that is, when the lockable portion 67B of the locking pin 68 is in the opening 42B).

In the present example, the pin holders 64 are configured to be actuated by the seat actuator 61 to change the state of the seat locking mechanism to the unlocked state and thus release the upper seat 50 from being locked relative to the lower support 30. For this purpose, the pin holders 64 are configured to be manipulated along a route perpendicular to the longitudinal direction D, between a locking position, in which at least the lockable portion 67B of the locking pin 68 is inserted into one of said plurality of openings 42A-42C, and a removed position, in which the lockable portion 67B of the locking pin is outside the openings 42A-42C. Thus, after the seat actuator 61 is actuated, the pin holders 64 are manipulated into their removed position, thereby pulling the lockable portion 67B of the locking pin 68 out of one of the openings 42A-42C.

With regard to the legs of the chair assembly according to the present utility model, with reference to the legs and the device for locking the legs as described in US 9505321 (the description of which is incorporated herein by reference as indicated above), the legs may be configured to be manipulated by means of a mechanism for manipulating the legs, comprising at least one actuator for manipulating the legs, located in a location accessible to the user, and a mechanism for locking the legs. The legs are configured to be manipulated between their storage state and their working state.

With reference to Fig. 5A-5C, the mechanism 90 for manipulating the legs of the chair assembly 10 according to the present example comprises a leg manipulation actuator 91 for actuating the manipulation of the legs 70 and a leg locking mechanism (not shown) for actuating a leg locking device for locking the legs in one of the storage state and the operating state. In the present example, the leg manipulation actuator 91 consists of a leg handle 92 located on the upper rear side of the back support portion 52 to allow easy access by the user. The leg handle 92 comprises an outer leg handle portion 92A configured to be grasped by the user of the leg handle 92, and an inner leg handle portion 92B fixedly connected to the back support portion 52. The handle 92 of the legs is operatively connected to the mechanism for locking the legs in such a way as to unlock the locking device and provide the possibility of moving the legs 70 between their storage state and the working state by applying appropriate forces to the handle 92 by the user.

While in the present example, as described above, the handle 62 of the chair is located at the front part 54 for the feet, and the handle 92 of the legs is located at the upper rear side of the back support part 52, their states may be different if they are located at a distance from each other in order to reduce the risk of confusion.

As stated above, the seat assembly may be configured to prevent at least a combination between the stored state of the legs and the extended state of the upper seat, as a result of which it is impossible to insert the seat assembly into a vehicle with a child lying on it. In particular, the seat assembly may be configured to prevent manipulation of one of the upper seat or the legs, if such manipulation will lead to a position in which the legs are in their stored state and the upper seat is in its extended state. In some cases, the seat assembly may be configured in such a way that a certain state of one of the legs or the upper seat may cause the prevention of manipulation of the other. In some cases, the seat assembly may comprise at least one device for preventing manipulation, configured to identify a certain state of at least one of the upper seat and the legs and to prevent manipulation of the other during the maintenance of said certain state. Such a device for preventing manipulation may comprise a mechanical or electrical mechanism. In particular, the seat assembly may comprise a device for preventing manipulation for each of the upper seat and the legs, each of which is configured to identify a certain state of their corresponding part.

The manipulation prevention device may be configured to prevent manipulation of either the upper chair or the legs until the other of the upper chair or the legs is in a certain state. For example, the manipulation prevention device may be configured to prevent manipulation of the chair from the vertical state to the extended state if the legs are in the storage state. In another example, the manipulation prevention device may be configured to prevent manipulation of the legs from the operating state to the storage state if the chair is in the extended state.

The manipulation prevention device may be configured to prevent manipulation of either the upper chair or the legs by locking the upper chair or the legs, respectively, or by locking the mechanism for manipulating the chair or the mechanism for manipulating the legs, respectively.

The manipulation prevention device may have an identifying component, such as a trigger portion configured to identify the state of the upper chair or the legs of the chair assembly, and a locking portion configured to be activated or started by the trigger portion for selectively locking the corresponding mechanism for manipulating the chair or the legs. The trigger portion and/or the locking portion of the manipulation prevention device may be located on another part of the chair assembly or consist of another part of the chair assembly. In some cases, the manipulation prevention device may be configured to lock the mechanism for manipulating the upper chair or the legs in a manner similar to the corresponding locking mechanisms, or the manipulation prevention device may consist of it or be combined with it.

For example, the chair assembly according to the present utility model may comprise a device for preventing the manipulation of the chair, configured to prevent the manipulation of the upper chair from the vertical state to the extended state at least when the legs are in the storage state. In one example, the device for preventing the manipulation of the chair is configured to prevent the manipulation of the upper chair to the extended state, unless the device for preventing the manipulation of the chair is activated by the legs in their working state.

The device for preventing manipulation of the chair can be designed with the possibility of changing states between a locking state, in which the device for preventing manipulation of the chair prevents manipulation of the upper chair with translation into the extended state, and an unlocking state, in which the device for preventing manipulation of the chair provides the possibility of manipulation of the upper chair with translation between the vertical state and the extended state.

In the present example, the device for preventing manipulation of the chair is designated as 100 in Fig. 4B. When the legs 70 are in their stored state, the device 100 for preventing manipulation of the chair is configured to prevent manipulation of the upper chair 50 from the vertical state to the extended state. The device 100 for preventing manipulation of the chair is configured to be activated by the legs 70 when the legs 70 are in their operating state, wherein the activation changes the position of the device 100 for preventing manipulation of the chair from the locked position to the unlocked state so that the upper chair 50 can be manipulated between its vertical and extended states.

In some cases, the device for preventing manipulation of the chair is configured to prevent manipulation of the upper chair during the locking state from the vertical state to the extended state by locking the mechanism for manipulating the chair. In particular, the device for preventing manipulation of the chair can be configured to lock the mechanism for manipulating the chair when the legs are in their storage state. The device for preventing manipulation of the chair can also be configured to release said locking of the mechanism for manipulating the chair when the legs are in their working state. Thus, the device 100 for preventing manipulation of the chair is configured to lock the mechanism for manipulating the chair only when the upper chair 50 is in its vertical state.

In some cases, the device for preventing manipulation of the chair comprises a chair trigger element and a chair locking element. The chair trigger element may be designed with the possibility of controlling the chair locking element when starting with the help of the legs, when the legs are in their working state. The chair locking element is designed with the possibility of being controlled by the chair trigger element in such a way that it is subject to manipulation during its operation from the locking state, in which the chair locking element locks the mechanism for manipulating the chair in order to prevent manipulation of the upper chair from the vertical state to the extended state, to the release state, in which the mechanism for manipulating the chair is released from said locking in such a way that it is possible to manipulate the upper chair between the vertical and extended states. In a specific example, in which the legs are designed with the possibility of starting the chair trigger element only when the legs are in their working state.

Fig. 4B and 4C show an illustrative embodiment of a device 100 for preventing manipulation of a chair, comprising a chair trigger 102 and a chair locking element 110. The chair trigger 102 is configured to be triggered by the legs 70 only when they are in their operating state, and to be able to control the chair locking element 110 as a result of this. The chair trigger 102 is also configured to maintain the operation of the chair locking element 110 when the legs 70 are in their operating state. The seat locking element 110 is designed to have a locking state, in which the seat locking element 110 locks the seat manipulation mechanism 60 to prevent manipulation of the upper seat 50 from the vertical state to the extended position, and a release position, in which the seat manipulation mechanism 60 is released from said locking by means of the seat locking element 110 in such a way as to ensure the possibility of manipulation of the upper seat 50 between the vertical and extended states.

In general, the chair trigger may be located on the lower support of the chair assembly near at least one of the attachment areas of the legs. In such cases, at least one of the legs may comprise a frontal projection located around its near end, wherein the frontal projection is configured to trigger the chair trigger when the legs are in their working state. In other words, when the legs are moved, or they are in their working state, their frontal projection triggers the chair trigger, causing the chair trigger to control the chair locking element, which manipulates the chair locking element from its locking state to its releasing state in such a way that the chair locking element releases the locking of the mechanism for manipulating the chair in such a way as to provide the possibility of manipulating the upper chair between the vertical and extended states. Accordingly, when the legs are not in the working state (that is, the legs are moved to the storage state or towards the storage state), their frontal projection no longer triggers the trigger element of the chair, and in this case the locking element of the chair takes its locking state in such a way as to lock the mechanism for manipulating the chair and, thus, prevent the manipulation of the upper chair from the vertical state to the extended state.

In the present example and with reference to Fig. 4B, 4C, 4F and 4G, the trigger element 102 of the chair comprises a trigger housing 103 located on the lower support 30 in front of at least one of the regions 42 for attaching the legs and near it. In some cases, the trigger element 102 of the chair is located inside one of the side walls 35 or projects from it in the lateral direction. The movable element 104 extends through the length of the trigger housing 103, which has a sufficient length to reach at least a part of one of the legs 70 and to make contact with it, and, in particular, with the front side of the near end 72 of this leg 70, when the legs 70 are in their working condition. The proximal end 72 of at least the leg 70, which triggers the trigger element 102 of the chair, comprises a frontal projection 105, extending forward from it and configured to be pressed against the movable element 104, when the legs are in their working state. The trigger element 102 of the chair is operatively connected, mechanically or electrically, to the locking element 110 of the chair. In the drawings, the movable element 104 is operatively connected by means of a cable 101 to the locking element 110 of the chair in such a way as to control the locking element 110 of the chair when pressed by means of the frontal projection 105, when the legs 70 are in their working state. Thus, in the unlocking state of the device 100 for preventing manipulation of the chair (Fig. 4F), the movable member 104 of the trigger member 102 of the chair is pressed against the trigger housing 103 by means of the frontal projection 105 of one of the legs 70, when the legs 70 are in the operating state. Said pressing of the trigger member 102 of the chair controls the locking member 110 of the chair in such a way that it is manipulated from the locked state to the released state, thereby releasing the mechanism 60 for manipulating the chair so that the upper chair 50 can be manipulated between the vertical and extended states. Accordingly, in the locking state of the device 100 for preventing manipulation of the chair (Fig. 4G), the movable member 104 of the trigger member 102 of the chair is not pressed by means of the frontal projection against one of the legs 70, when the legs 70 are not in the operating state. Thus, the release element 102 of the chair is not actuated by the legs 70, and thus the release element 102 of the chair does not control the locking element 110 of the chair. Thus, the locking element 110 of the chair takes its locking state, in which it locks the mechanism 60 for manipulating the chair in such a way that the manipulation of the upper chair 50 from the vertical state to the extended state is prevented. Thus, the legs 70 of the chair assembly 10 are generally configured to change the state of the device 100 for preventing manipulation of the chair between the locking state and the unlocking state. Thus, the device for preventing manipulation of the chair as a whole consists of the legs. In particular, the locking state of the device for preventing manipulation of the chair, as a rule, consists of the legs in their stored state, and the unlocking state of the device for preventing manipulation of the chair, as a rule, consists of the legs in their working state.

The locking element 110 of the chair is designed with the possibility of being activated by the trigger element 102 of the chair when it is started by means of the legs 70 in their working state. The locking element 110 of the chair is designed with the possibility of manipulation between the locking state associated with the locking state of the device 100 for preventing the manipulation of the chair, and the releasing state associated with the unlocking state of the device 100 for preventing the manipulation of the chair. In the locking state, the locking element 110 of the chair locks the manipulation of the mechanism 60 for manipulating the chair, and in the releasing state, the locking element 110 of the chair releases the mechanism 60 for manipulating the chair in such a way as to ensure the possibility of manipulating it.

In the present example, the locking element 110 of the chair comprises a latch, which is rotatably connected to the lower support 30 and/or the part 54 for the legs by means of a rotary pin 114 and is located near the inner part 62B of the handle of the chair. The locking element 110 of the chair comprises an interacting part 111 at one end and a lever part 112 at its other end. The lever portion 112 is directly or indirectly connected to the movable element 104 of the trigger element 102 of the chair in such a way that the movement of the movable element 104 actuates the locking element 110 of the chair for rotation around the rotary pin 114. In the example shown, the lever portion 112 is operatively connected to the movable element 104 by means of a cable 101. The locking element 110 of the chair may additionally have a compression spring (not shown) configured to bias the locking element 110 of the chair in the direction of its locking state.

In the locked state of the locking element 110 of the chair, the interacting part 111 is configured to mechanically communicate with at least a part of the handle 62 of the chair in such a way as to prevent the use of the handle 62 of the chair for manipulating the mechanism 60 for manipulating the chair. In this example, the inner part 62B of the chair handle further comprises a recess 115 of the chair handle, and the interacting part 111 has a locking tooth 116 protruding laterally forward around its rear end. The locking tooth 116 is configured to be received in the recess 115 of the handle 62 of the chair in such a way that, when the locking tooth 116 is received therein, the locking element 110 of the chair locks the handle 62 of the chair and, thus, the mechanism 60 for manipulating the chair from being controlled by the user for manipulating the upper chair 50 from the vertical state to its extended state.

In operation, when the trigger element 102 of the chair is triggered by means of the legs 70 in its working state, the movable element 104 moves by means of the frontal projection 105, which, in turn, causes the rotation of the locking element 110 of the chair in the first direction from the recess 115 of the chair handle in such a way that the locking element 110 assumes its released state. When the trigger element 102 of the chair ceases to be actuated by means of the legs 70 (that is, when the legs 70 are manipulated with the translation from or from the working state and in the direction of the storage state), the movable element 104 moves back to the corresponding region 42 of the attachment of the legs, causing the rotation of the locking element 110 of the chair in the second direction opposite to the first direction, and as a result inserting the locking tooth 116 into the recess 115 of the chair handle, thereby bringing the locking element 110 of the chair to its locked state.

In other cases (not shown), the device for preventing manipulation of the chair is designed to prevent, in its state, blocking the manipulation of the upper chair in the direction of the extended state by locking the upper chair. In such cases, in the locking state, the seat locking element of the device for preventing manipulation of the chair can be designed to rest against the upper chair in such a way as to prevent manipulation thereof. For example, the seat locking element can consist of a bolt that is directly or indirectly connected to the trigger element 102 of the chair. In the locking state, such a seat locking element can be designed to be positioned inside a corresponding opening located on the foot portion 54 of the upper chair 50 in such a way as to lock the upper chair 50 from manipulation, and in the release state, the seat locking element can be designed to be removed from said opening when the trigger element 102 of the chair is launched using the legs 70.

In other cases, the device for preventing manipulation of the chair may consist of the legs and/or structures associated therewith. In one example, the device for preventing manipulation of the chair may consist of the distal ends of the legs.

In general, when the upper seat of the seat assembly is manipulated from the vertical state to the extended state, the corresponding back support portion of the upper seat is moved from the first position, in which the back support portion is located at the first rear angle to the base plane, to the second position, in which the back support portion is located at the second rear angle, which is smaller than the first rear angle. This manipulation of the back support from the first rear angle to the second rear angle, associated with the vertical and extended states of the upper seat, respectively, can be understood as forming a backward manipulation of the back support portion. The device for preventing the chair manipulation can be designed with the possibility of selectively blocking the backward manipulation of the back support portion. For example, in cases where the distal ends of the legs constitute a device for preventing manipulation of the chair, the distal ends of the legs may be configured to be tightly located in their stored state in contact with the rear surface of the back support portion in such a way as to block rearward manipulation of the back support portion, thereby preventing manipulation of the upper chair from the vertical state to the extended state.

In one example and with reference to Fig. 6, the device for preventing manipulation of the chair may comprise a rear bar 84 connecting the distant ends 71 of the supports 76 of the rear legs. When the legs 70 are in the stored state, the rear bar 84 is configured to be firmly located on the rear surface of the back support portion 52 when it is in its vertical state. Thus, the rear bar 84 physically blocks the rear manipulation of the back support portion 52 and, thus, prevents the upper chair 50 from being manipulated from the vertical state to the extended state. It is envisaged that the front bar 82 (shown in Fig. 5A), connecting the distant ends 71 of the supports 74 of the front legs, may also be configured to block the back support portion 52 from being manipulated backwards, thereby preventing the upper chair 50 from being manipulated from the vertical state to the extended state. As shown in Fig. 5A, in addition to the front bar 82 connecting the distal ends of the front leg supports, the front bar 80 connects the front leg supports 74 at their locations between the distal and proximal ends of the leg supports.

The device for preventing manipulation of the present chair assembly may alternatively or additionally comprise a device for preventing manipulation of the legs, configured to prevent manipulation of the mechanism for manipulating the legs. In the present example, the chair assembly 10 comprises a device 120 for preventing manipulation of the legs, configured to prevent manipulation of the legs 70 from the operating state to the storage state at least when the upper chair 50 is in the extended state. Similar to the mechanism for preventing manipulation of the chair, the device 120 for preventing manipulation of the legs is also configured to change its state between a locking state, in which it prevents manipulation of the legs 70 to the storage state, and an unlocking state, in which it allows manipulation of the legs 70 between the operating state and the storage state.

In some cases, the device 120 for preventing manipulation of the legs is configured to prevent manipulation of the legs 70 in the locking state into the storage state by locking the mechanism 90 for manipulating the legs. In particular, the device 120 for preventing manipulation of the legs is configured to lock the legs 70 from manipulation in the direction of the storage state when the upper chair 50 is in its extended state. Thus, the device 120 for preventing manipulation of the legs is configured to lock the mechanism 90 for manipulating the legs when the legs 70 are in their working state.

In general, the device for preventing manipulation of the legs may comprise a leg trigger and a leg lock. The leg trigger may be configured to operate the leg lock when launched by the upper chair, when it is in the vertical state. Said operation of the leg lock by means of the launched leg trigger manipulates the leg lock from the locked state to the released state, in which the leg lock thus releases the mechanism for manipulating the legs from the locked state. In some cases, the upper chair is configured to launch the leg trigger only when the upper chair is in the vertical position. The leg trigger may also be configured to maintain the operation of the leg lock when the upper chair is in its vertical state.

In the present example, best shown in Fig. 4D and 4E, the leg release element is connected to the upper chair 50 and consists of a part of the mechanism 60 for manipulating the chair, wherein when manipulating the upper chair 50 into a vertical state, the leg release element is designed to maintain the upper chair 50 in a vertical state. In particular, the leg release element can consist of a mechanism 63 for locking the chair and, even more particularly, of a guide pin 66 of the upper chair 50 and an elongated guide groove 41 of the lower support 30. For this purpose, the elongated guide groove 41 further comprises an internal frame 123 of the groove, extending along the length of the elongated guide groove 41 in its inner part. The inner frame 123 of the groove is designed to form a depth difference from the frontmost edge of the elongated guide groove 41 to a distance from its rearmost edge in such a way that the guide pin 66 can only be partially inserted into the elongated guide groove 41, while being opposite the inner frame 123 of the groove. At the rearmost edge, the inner frame 123 of the groove forms a groove recess 124, which has a greater depth than the inner frame 123 of the groove. The groove recess 124 is designed to accommodate a larger part of the lockable portion 67B of the guide pin 66 in it than the remaining part of the elongated guide groove 41.

Thus, the trigger element of the legs is designed with the possibility of "identifying" the state of the upper chair 50 based on the depth to which the guide pin 66 is inserted into the elongated guide groove 41. In particular, when the upper chair 50 is in the vertical state, which is associated with the state of unlocking the device 120 for preventing manipulation of the legs, the trigger element of the legs is inserted into the recess 124 of the groove (Fig. 4D), and the insertion starts the trigger element of the legs to control the locking element of the legs to manipulate it until its release state in such a way that the legs 70 can be manipulated between the operating state and the storage state. Accordingly, when the upper chair 50 is not in its vertical state, which is associated with the locking state of the device 120 for preventing the manipulation of the legs, the leg trigger is inserted into the elongated guide groove 41 opposite the inner frame 123 of the groove (for example, Fig. 4E), wherein the leg trigger is not started by the upper chair 50 and thus does not control the leg locking member, and thus the manipulation of the legs in the direction of the extended state is prevented. Thus, when the upper chair 50 is in the vertical state, the device 120 for preventing the manipulation of the legs is in the unlocked state, and thus the legs can be manipulated between the operating state and the storage state. When the upper chair 50 is not in the vertical state (for example, it is in the extended state), the device 120 for preventing the manipulation of the legs is in its locking state, and thus the manipulation of the legs into the operating state is prevented.

The locking element 130 of the legs of the device 120 for preventing manipulation of the legs is designed to have a locking state in which the locking element 130 of the legs locks the mechanism 90 for manipulating the legs, and a release position in which the mechanism 90 for manipulating the legs is released from locking by the locking element 130 of the legs. The locking element 130 of the legs is designed to change positions by means of operation of the trigger element of the legs, to which it is connected either directly or indirectly. The locking element 130 of the legs is designed to be manipulated between the locking state associated with the locking state of the device 120 for preventing manipulation of the legs, and the release state associated with the unlocking state of the device 120 for preventing manipulation of the legs. In the locked state, the locking element 130 of the legs locks the manipulation of the mechanism 90 for manipulating the legs, and in the released state, the locking element 130 of the legs ensures the possibility of manipulating the mechanism 90 for manipulating the legs.

In the present example shown in Fig. 5B, the chair assembly 10 comprises a pair of leg locking elements 130, each of which is designed similarly to the chair locking element 110, formed by a latch having an interacting part 131 at one end and a lever part 132 at the second end. The leg locking elements 130 are connected with the possibility of rotation to the upper chair 50 and, in particular, to the back support part 52 by means of a rotation axis 134 located at its respective centers. Each leg locking element 130 is also connected on its lever part 132 directly or indirectly to a part 67A of the guide pin holder 66 (that is, the leg trigger element). The locking elements 130 of the legs are connected to the part 67A of the holder in such a way that manipulation of the part 67A of the holder, that is, by sliding movement of the guide pin 66 along the elongated guide groove 41, leads to rotation of the locking elements 130 of the legs.

In some cases, which are not illustrated in this document, the locking elements 130 of the legs may additionally comprise a locking spring (not shown) configured to bias the locking elements 130 of the legs to their locked states.

In general, in the locked state, the interacting part 131 of the locking element 130 of the legs is designed to make a stop/contact with at least a part of the handle 92 of the legs in such a way as to prevent the use of the handle 92 of the legs for manipulating the mechanism 90 for manipulating the legs. In this example, the inner part 92B of the handle of the legs further comprises a recess 135 of the handle of the legs, and the interacting part 131 has a locking tooth 136 projecting in the lateral direction forward around its rear end. The recess 135 of the leg handle is designed to accommodate the locking tooth 136 of the interacting part 131 of the locking element 130 of the legs in such a way that when it is placed inside the recess 135 of the leg handle, the locking element 130 of the legs locks the handle 92 of the legs and, thus, the mechanism 90 for manipulating the legs from user control for manipulating the legs 70 from the working state to their storage state.

In operation, when the trigger element of the legs is launched by means of the upper chair 50 (that is, when the upper chair 50 is manipulated to be translated into a vertical state), the guide pin 66 is inserted into the recess 124 of the groove (under the action of the compression forces applied to it by the pin holder 64), thus causing the rotation of the locking element 130 of the legs in the first direction from the recess 135 of the handle of the legs in such a way that the locking element 130 of the legs assumes its released state. When the trigger element of the leg is removed from the recess 124 of the groove and slidably moved along and inside the elongated guide groove 41 (that is, when the upper chair 50 is manipulated with translation from its vertical state), the part 67A of the holder is moved at a distance from the holder 64 of the pin, causing the rotation of the locking element 130 of the legs in the second direction opposite to the first direction, and into the recess 135 of the leg handle, thus bringing the locking element 130 of the legs to its locking state. Thus, the locking element 130 of the legs locks the handle 92 of the legs to prevent the user from controlling the mechanism 90 for manipulating the legs for manipulating the legs 70.

In other cases (not shown), the device 120 for preventing manipulation of the legs in its locking state may be designed to prevent manipulation of the legs 70 in the direction of the storage state by locking the legs 70. In such cases, in its locking state, the locking element 130 of the legs may be designed to make a stop/contact with the legs 70 in such a way as to prevent manipulation of them. In such cases, the locking element 130 of the legs consists of the upper chair 50 in its extended state and, in particular, its part 52 for supporting the back.

For example, in its extended state, the back support portion may physically prevent the legs 70 from being manipulated into the position by blocking the movement of at least a portion thereof into its position in the storage state. In this example, the back support portion 52 may be used to prevent the rear bar 84 of the pair of supports 76 of the rear legs from reaching its position in the storage state and, thus, to encourage the legs 70 to be maintained in the working state.

The convertible child car safety seat unit according to the present utility model may comprise one or more side protection modules configured to provide the seat unit with protection against a side impact. In particular, the side protection module is configured to absorb at least a portion of the impact energy thereon. As an example, at least when the seat unit is in its storage or installation mode on the car seat and is located inside the car near the side door of the car, in the scenario of a car door impact on the unit, the side protection module mounted on the side of the unit facing the car door will absorb at least a portion of the impact energy, thereby preventing injury to the infant seated in said unit.

Typically, the chair assembly may comprise a chair having a back support portion and a foot support portion. In some examples, the chair may comprise a lower support portion and a chair upper portion that are designed and configured to operate together in the same manner as described above with respect to the assembly 10. In some examples, the chair may comprise a lower support portion and a chair upper portion that are integral or made as a single unit. Accordingly, the following description of the chair applies to any chair that has a handle attachment area for connecting the handle to the chair and has a chair upper portion for allowing an infant to sit therein and a lower support for providing mechanical strength to the chair.

The unit comprises a handle, connected with the possibility of rotation to the chair in the area of attachment of the handle of said chair. The connection provides the possibility of rotation of the handle between a plurality of positions in order to adopt at least an anti-rollback position or a wheelchair state, a carrying state and a storage state. The handle may have a part of the chair connection, on which the handle is connected to the chair and contains a region facing the chair, facing the area of attachment of the handle, and an opposite outwardly facing region. The connection of the handle and the chair may be performed using any suitable connecting device, including mechanical, electrical or magnetic connections, providing the possibility of rotation of the handle between a plurality of different positions.

It should be understood that the handle is connected to the chair on both sides of the chair and for brevity only one side of the chair, the corresponding attachment area of the handle and the corresponding part of the handle are described, and its description also applies to the other side. In addition, the chair assembly may include two side protection modules, one on each side of the handle/chair, and for brevity only one was described in this document. The description of one side protection module applies to the other side protection module.

The side protection module can be designed with the possibility of selective mounting on the handle in the outwardly facing area of said handle in such a way that the side protection module extends in the lateral direction of the chair to a greater extent than the handle. The connection of the side protection module and the handle can be performed using any suitable connecting device, including mechanical, electrical or magnetic connections that provide the possibility of rotation of the side protection module together with the handle when connected to it, while providing the possibility of selective attachment and detachment of the side protection module. It should be understood that the handle is connected with the possibility of rotation in the area of attachment of the handle, which makes the area of attachment of the handle bulky and structurally complex, and for mounting the side protection module on the part of the handle connected to the area of attachment of the handle, with the possibility of rotation together with it, a complex design of the connecting device is required.

In the present example illustrated in Fig. 7A-7H, the convertible assembly 210 of the child car safety seat comprises a seat 202 consisting of an upper part 250 of the seat and a lower support 230. It should be understood that, although the seat assembly 210 has been shown to be in a storage mode, it may have an operating mode similar to that described above in this document with respect to the seat assembly 10. In fact, the seat assembly 210 may comprise some or all of the features of the seat assembly 10 described above, for example, those related to modes, and the corresponding description of the operating mode and storage mode of the assembly 10, as well as the operating state and storage state of the legs 70, refers to the assembly 210 and the legs 270.

The chair 202 has two side faces 202A and 202B, each of which has a corresponding handle attachment region 205, in which the handle 212 is connected in a rotatably manner. For example, two chair connection parts 213 on each side of the handle 212 are connected to the handle attachment parts 205 on two side faces 202A and 202B of the chair 202. The chair connection part 213 comprises a chair-facing region 213A, facing the handle attachment region 205, and an opposite outward-facing region 213B.

The side protection modules 206 are shown mounted on the respective sides of the handle 212. As shown in Fig. 7C, 7D and 7E, which show the handle 212 in the anti-rollback state, the carrying state and the storage state, respectively, wherein the side protection module 206 is configured to rotate together with the handle 212.

In general, the lateral protection module 206 may have an elongated shape extending along the longitudinal axis in such a way that the lateral protection module may have a longitudinal dimension extending along the longitudinal axis greater than the lateral dimension extending across the longitudinal axis. The elongated shape may be rectangular, polygonal, triangular, oval, elliptical, ovoid, teardrop-shaped, or the like.

The side protection module interacts with the handle at least in two sections, in particular, it interacts immovably in at least two sections extending at least partially along the longitudinal axis. Thus, the side protection module comprises a first interacting part of the handle and a second interacting part of the handle, located at a distance from each other at least partially along the longitudinal axis, and the handle comprises, on the outwardly facing region, a corresponding first interacting part of the module for interacting with the first interacting part of the handle and a second interacting part of the module for interacting with the second interacting part of the handle. At least one of these two interactions may be a connection for mounting the side module on the handle, and at least one of these two interactions may be an orientation lock for fixing the orientation of the side module with respect to the handle in such a way that the side module is designed with the possibility of rotation together with the handle.

For example, the interaction of at least one of the first and second interacting parts of the handle with the corresponding first and second interacting parts of the module can be a connecting device for installing the side protection module on the handle. The connecting device can comprise a handle connecting element located on at least one of the first and second interacting parts of the handle, and a corresponding module connecting element located on at least one of the first and second interacting parts of the module. The connecting elements can be detachably connected to each other so that the connecting device can constitute a quick release mechanism. In general, the connecting device can have any suitable design that ensures the possibility of detachably connecting the side protection module to the handle. For example, the connecting device can be a mechanical, electrical or magnetic connecting device that constitutes a quick release mechanism.

In addition, the interaction of at least one of the first and second interacting parts of the handle with the corresponding first and second interacting parts of the module can constitute a mechanism for fixing the orientation, which, regardless of whether it participates in installing the side protection module on the handle, fixes the orientation of the side protection module relative to the handle. In general, the mechanism for fixing the orientation can comprise a first part located on the side protection module and a second part located on the handle. The first and second parts can thus interact with the others to prevent relative rotation between them so as to fix the orientation to ensure the possibility of rotation of the side protection together with the handle. The mechanism for fixing the orientation can comprise any suitable structure for fixed interaction of the first part and the second part to prevent relative rotation of one relative to the other without necessarily connecting them to each other. In some examples, the mechanism for fixing the orientation can consist of a connecting device.

In the present example illustrated in Fig. 7A-7H, the side protection module has an elongated shape having a longitudinal axis LA. It has been shown that the side protection module 206 and the seat connecting portion 213 of the handle 212 have cooperating handle portions and cooperating module portions, respectively. Fig. 7F shows various views of the side protection module 206 and the seat connecting portion 213, wherein the upper left portion of Fig. 7F shows a cross-sectional view of the side protection module 206 mounted on the handle 212, made along a plane perpendicular to the axis of rotation PA of the handle, and, as seen in the lateral direction passing along the axis of rotation PA into the side protection module from its outermost lateral region represented by the viewing direction V1 (Fig. 7A). The upper right portion of Fig. 7F is a cross-sectional view of the handle 212 taken along a plane perpendicular to the axis of rotation PA of the handle and as seen in a lateral direction running along the axis of rotation PA from the seat-facing region to the outward-facing region of the handle 212 represented by the viewing direction V2 (Fig. 7A). The lower left portion of Fig. 7F is a cross-sectional view of the side protection module 206 detached from the handle 212, taken along a plane parallel to the plane along which the view is taken in the upper left portion of Fig. 7F and located further toward the inner surface of the side protection module that faces the handle when connected to it, and as seen in the same direction as in the upper left portion of Fig. 7F. The lower right portion of Fig. 7F is a cross-sectional view of the side protection module 206 detached from the handle 212, taken along the same plane as the view in the lower left portion of Fig. 7F and as viewed in the same direction as the view in the upper right portion of Fig. 7F.

As can be seen from Fig. 7F, the side protection module 206 comprises a first interacting part 206-1 of the handle and a second interacting part 206-2 of the handle, located at a distance along the longitudinal axis LA, and the handle comprises a first interacting part 212-1 of the module and a second interacting part 212-2 of the module. In this example, the first interacting part 206-1 of the handle and the first interacting part 212-1 of the module constitute a magnetic connection mechanism, wherein one of them is a magnet, and the other can be a magnet or a magnetic element (which is not necessarily a magnet, but is attracted to a magnet). The magnet(s) and/or the magnet and the magnetic element constitute the connecting element of the handle and the connecting element of the module. In addition, in the present example, the second interacting part 206-1 of the handle and the second interacting part 212-1 of the module constitute a mechanism for fixing the orientation, in which the second interacting part 206-2 of the handle is a recess constituting the first part of the mechanism for fixing the orientation, and the second interacting part 212-2 of the module is a projection constituting the second part of the mechanism for fixing the orientation, to be placed inside the said recess when installing the side protection module 206 on the handle 212 in such a way that the side protection module 206 cannot rotate/turn relative to the handle 212, and thus the orientation of the side protection module 206 is fixed relative to the handle 212.

In general, the side protection module may comprise at least one third interacting part of the handle, located with an offset of the longitudinal axis, and the outwardly facing region of the handle may comprise a corresponding at least one third interacting part of the module, configured to interact with said at least one third interacting part of the handle, when the side protection module is mounted on the handle. The interaction of said at least one third interacting part of the handle with said corresponding at least one third interacting part of the module may constitute a connecting device, which may comprise a connecting element of the handle, located on said at least one third interacting part of the handle, and a corresponding third connecting element of the module, located on said at least one third interacting part of the module. The connecting elements may be connected to each other with the possibility of detachment so that the connecting device can constitute a quick release mechanism. In general, the connecting device may have any suitable design that ensures the possibility of detachable connection of the side protection module to the handle. For example, the connecting device may be a mechanical, electrical or magnetic connecting device constituting a quick release mechanism. In some examples, the interaction of at least one third interacting part of the handle with the corresponding third interacting part of the module may constitute a mechanism for fixing the orientation, which, regardless of whether it participates in mounting the side protection module on the handle, fixes the orientation of the side protection module relative to the handle. In general, the mechanism for fixing the orientation may comprise a first part located on the side protection module and a second part located on the handle. The first and second parts may thus interact with the others to prevent relative rotation between them so as to fix the orientation to ensure the possibility of rotation of the side protection together with the handle. The mechanism for fixing the orientation may comprise any suitable structure for fixed interaction of the first part and the second part to prevent relative rotation of one relative to the other without necessarily connecting them to each other.

In some cases, the side protection module may comprise two third interacting parts of the handle, each of which is offset relative to the longitudinal axis and located on its opposite sides. The handle may comprise only one third interacting part of the module, which interacts with one of these two third interacting parts of the handle depending on which side of the handle the side protection module is connected to. For example, the third interacting part of the left side module of the handle may interact with one of the two third interacting parts of the handle, and the third interacting part of the right side module of the handle may interact with the other of the two third interacting parts of the handle. Such a design and arrangement of the third interacting parts of the handle and the interacting part of the module provides the possibility of using side protection modules on both sides of the seat and eliminates the need to manufacture different side protection modules for different sides of the seat.

In the present example, as can be best seen in Fig. 7F, the side protection module 206 comprises two third interacting parts 206-3, and the handle has one third interacting part 212-3 of the module. In this example, each of the third interacting parts 206-3 of the handle and the third interacting parts 212-3 of the module constitutes a magnetic coupling mechanism, wherein one of which is a magnet, and the other can be a magnet or a magnetic element (which is not necessarily a magnet, but is attracted to a magnet). The magnet(s) and/or the magnet and the magnetic element constitute the coupling element of the handle and the coupling element of the module. The third interacting part 212-3 of the module interacts with one of the two third interacting parts 206-3 of the handle depending on which side (left or right) of the handle 206 the side protection module 206 is connected to.

In general, the side protection module may comprise more than one part, i.e. at least a first part of the module, configured to be selectively mounted on the handle, and at least a second part of the module, configured to be selectively mounted on the first part of the module. The side protection module may comprise a locking device for selectively locking the first and second parts of the module with each other when mounting the second part of the module on the first part of the module. The first and second parts of the module may be connected to each other by any suitable mechanical, electrical or magnetic connecting device. The locking device may have any suitable design to prevent the second part of the module from being disconnected from the first part of the module when locked. The side protection module, made in the form of two parts, provides the ability to select its lateral extension from the seat, for example, depending on the availability of space in the car.

In the present example, as best seen in Fig. 7G, the side protection module 206 comprises a first module part 206A configured to be selectively mounted on the handle 212 and a second module part 206B configured to be selectively mounted on the first module part 206A. The side protection module 206 further comprises a locking device 207 for selectively locking the first and second module parts 206A and 206B to each other when the second module part 206B of the module is mounted on the first module part 206A. In the present example, the locking device 207 is configured to move between a locking state in which it prevents the first and second module parts 206A and 206B from being disconnected and an unlocking state in which it allows the first and second module parts 206A and 206B to be disconnected by rotating the second module part 206B relative to the first module part 206A.

In general, the assembly may further comprise a cable connection device for connecting the side protection module to at least one of the handle and the chair when the side protection module is mounted on the handle. The cable connection device may comprise a cable having a first end configured to be connected to the side protection module and a second end configured to be connected to at least one of the handle and the chair. In some examples, the second end may be connected to the legs instead of the handle or the chair. The cable connection device prevents the side protection module from flying off in the event of a sudden impact to it. For example, if the quick release mechanism does not withstand the impact and the side protection module is separated from the handle, the side protection module does not fly off and is instead suspended on the handle or the chair due to the cable connection device. In the present example, the cable connection device 208 can be best seen from Fig. 7H, where it has a cable 208A connected at one end to the side protection module 206, and at the other end to the handle 212.

In general, the unit may further comprise legs having distant ends with wheels and opposite near ends connected to the chair in the leg attachment areas. The leg attachment area may form part of the upper chair or the lower support and is located on both the right and left sides of the chair. The legs may comprise a front pair of legs and a rear pair of legs, and at least one of the front and rear pair of legs may be connected to the chair in the leg attachment area. The leg attachment area may at least partially overlap with the handle attachment area and, if necessary, with the side protection module when mounted on the handle, in the side view of said unit. For example, the lateral axis parallel to the handle rotation axis, when mounted on the handle, passes through at least a part of the handle attachment area and at least a part of the leg attachment area, if necessary, at least a part of the side protection module.

This overlap of the handle attachment area and the leg attachment area provides a thick layer of material in the area in which the side protection module is to be installed, thereby providing increased protection against a side impact. It should be understood that the attachment of the legs, as well as the handle in the area, both of which are designed with the possibility of independent rotation, makes this area bulky and structurally complex, having a thick layer (thick in the lateral direction) of material. In addition, the installation of the side protection module on the part of the handle connected in the handle attachment area makes this area even more bulky and has a thicker layer of material, thereby increasing the energy absorption capacity of this area in the event of a side impact.

In addition to the side protection module 206, the wheel can also constitute an additional side protection module. For example, when the legs are in their storage state, the wheels are located on the sides of the chair, which allows at least one wheel of the rear and front wheels to constitute an additional side protection module on both sides of the chair.

In the present example, the legs 270 have distant ends 271 with wheels 286 and near ends 272 connected in a leg attachment region 242 (best seen in Fig. 13A), only one of which is visible in Figs. 7A-7E. The leg attachment region 242 overlaps with the handle attachment region 205 in a side view of the assembly (Figs. 7C-7E). In other words, in a side view of the assembly, one of the leg attachment region 242 and the handle attachment region 205 at least partially blocks the view of the other of the leg attachment region 242 and the handle attachment region 205.

In the present example, in the state of storing the legs (Fig. 7A-7E), the front wheel 286a of the front leg 270A projects away from the chair 202 to a greater extent than the rear wheel 286B of the rear leg 270B, located on the same side of the chair 202, and constitutes an additional module of lateral protection. In some examples, the rear wheel can project away from the chair to a greater extent than the front wheel, located on the same side of the chair, and constitute an additional module of lateral protection.

The rotation of the legs between the operating state and the storage state has been described above in this document with respect to the legs 70 of the unit 10, and its description also applies to the legs 270. For example, the legs 270, similar to the legs 70, are configured to rotate back toward the back support portion 252 of the chair for manipulation from the operating state to the storage state in such a way that in the storage state, said far ends 271 are located closer to the back support portion 252 than the foot portion 254 of the chair 202.

The convertible unit of the child car safety seat according to the present utility model may comprise a zipper device which enables both the fabric cover and the canopy to be independently attached by means of a zipper to the back support portion thereof. In fact, the zipper device may be used with any child seat having a fabric cover and a canopy which are designed to be detachably connected, and thus the description below should be considered as applicable to any such seat having a back support portion comprising a shell made of plastic and having an outer side and an inner side onto which a fabric cover may be applied so as to at least partially cover the inner side of this shell. The plastic shell of the seat may comprise a back wall and two side walls, wherein each of these three walls has corresponding inner and outer surfaces which are connected at the corresponding upper edges. Together, the corresponding upper edges of the rear wall and the side walls are connected to form a continuous upper edge of the shell. In other words, the continuous upper edge of the shell is defined by the upper edges of the corresponding rear wall and side walls.

The zipper device may comprise two zippers, each of which has a separate zipper type. The zipper device may comprise a cover zipper and an awning zipper, each of which has a zipper half sewn to the shell, for example, along at least a portion of the upper edge of the shell and near it, and a mating half of the zipper, wherein the mating half of the cover zipper is sewn to the fabric cover, and the mating half of the awning zipper is sewn to the awning. Thus, both of the fabric cover and the awning can be attached with a zipper, wherein their zipper parts are attached to the corresponding halves of the shell zipper sewn to the shell.

Each of the two halves of each of the awning and cover zippers has a toothed portion with teeth of the zipper and a base portion free of such teeth, wherein the base portions are used to sew the zipper half to the shell or to the cover/awning, while leaving the toothed portions foldable. The zipper half of the shell of each of the zippers of the cover and awning is sewn to the shell on its base portion by means of at least one sewing seam. This allows the toothed portions of the shell halves of the zippers of the cover and awning to be foldable independently of each other in such a way that they can be located at a distance from each other when fastening the cover and awning.

The base portion of the half-zipper of the shell of the zipper of the cover may be located at least partially between the outer surface of the shell and the half-zipper of the shell of the zipper of the cover, for example, the base portion of the zipper of the cover. If necessary, the halves of the shell zippers of two zippers may be sewn to the shell together, that is, by at least one common sewing seam.

The teeth of the serrated portions of the shell halves of the two zippers may be located at a distance from the upper edge of the shell at approximately the same or different distances. In the latter case, the teeth of the shell half of the zipper may be located at a greater distance from the upper edge of the shell than the awning zipper. In any case, the serrated portions of the shell halves of the two zippers may be generally parallel to each other and to the upper edge of the shell.

In some cases, two zippers can be designed to be attached in opposite directions, for example, the awning zipper is designed to be attached from the first side wall of the shell to the second side wall of the shell, and the cover zipper can be designed to be attached from the second side wall of the shell to the first side wall. Such a device, in which each of the zippers is attached in a different direction, can facilitate use, for example, when attaching or removing an awning or cover.

In some cases, the zippers differ in length. The zipper of the canopy may extend to a shorter length than the zipper of the cover, and the zipper of the cover extends further along the two side walls of the shell. If necessary, the zipper of the canopy, when attached, is at least partially located above the attached zipper of the cover in such a way that when the canopy is attached to the chair, only the zipper of the canopy is visible from the outside of the chair. When the canopy is attached, the zipper of the cover is inaccessible at least along part of its length. This can reduce the likelihood of unintentional removal of the cover from the chair and prevent the removal of the cover before the canopy is removed.

The cover zipper may be located on the back support portion of the chair without extending further (e.g. the cover zipper does not extend to the foot portion). This may provide a potential manufacturing advantage in that the cover zipper is sewn to the shell at a shorter distance than would be required if the zipper also extended to the foot portion.

With reference to Fig. 8A, 8B and 9, in the illustrated example of the seat assembly 210, the upper seat 250 comprises a back support 252 having a shell 255 made of plastic, onto which a fabric covering 223 is removably applied. The plastic shell 255 of the back support 252 typically comprises three walls: a back wall 213 and two opposite side walls 204A, 204B formed in one piece to define a generally continuous and contoured body of the shell 255. Each of the back wall 213 and the side walls 204 has a respective inner and outer surface that is connected to form a continuous outer or upper edge 204', 213' of the respective walls 204A, 204B, 213, respectively. Together, the upper edges 204', 213' of the respective walls 204A, 204B, 213 are connected to form a generally continuous outermost upper edge of the casing 255.

Fig. 9 shows a part of the shell 255 with a part of the zipper device 200, by means of which the awning 150 (not visible) and the fabric cover 223 can be independently attached to it by means of a zipper along the upper edge of the shell 255. The upper edge (not visible) extends along the first side wall 204A to the upper part of the back wall 213, and then down the opposite side wall 204B. The zipper device 200 is sewn to the shell 255 in such a way that it extends along and passes near its upper edge or at least along a substantial part of it.

In the example shown, a part of the zipper device 200 is shown. One half 200A of the first zipper is configured to be mated with a corresponding half of the first zipper (not visible), sewn to the awning 150, and one half of the second zipper 200C is configured to be mated with a corresponding half of the second zipper 200D, sewn to the fabric cover 223. These two halves 200A, 200C of the zipper device 200 can be called "halves 200A, 200C of the shell zipper", since they are sewn to the upper seat 250 and are configured to ensure a connection by means of a zipper with the awning 150 and the fabric cover 223, respectively.

The zipper of the cover is illustrated in a partially attached position, whereby in the part formed above the zipper puller 290, half 200C and half 200D are fastened together by means of the zipper, with their teeth intertwined. Below the puller, the two halves are separated from each other.

For the awning zipper, only half 200A of the zipper shell is shown, extending a shorter distance than the zipper of the cover (for example, a shorter distance along the side wall 204A). At the beginning of the teeth of the zipper, a zipper puller 292 is shown, in which the initial box 294 of the zipper is located.

The half 200A of the zipper, configured to be mated with the awning 150, can be sewn closest to the upper edge of the shell 255 in such a way that the half 200A of the zipper extends along the length and along a trajectory that is located directly next to the upper edge of the shell 255 and parallel to it.

The half 200C of the zipper, configured to be mated with the fabric covering 223, can be located at a distance inward from the half 200A of the zipper of the shell.

In the exemplary configuration of the zipper device, both halves of the first and second zippers, which are sewn to the shell, can themselves be sewn together. In Fig. 9, half 200C of the zipper of the cover shell and half 200A of the zipper of the awning shell are sewn together through a generally continuous strip of fabric in such a way that the halves 200A, 200C of the zipper of the shell are generally located next to each other along their lengths. In such a configuration, each of these halves 200A, 200C of the zipper of the shell are located at a distance from each other along their lengths in such a way that they move along respective trajectories that are generally parallel to each other and to the upper edge of the shell 255 of the upper seat 250. The half 200C of the zipper of the shell, which is fastened to the fabric cover 223, is located at a distance inward from the half 200A of the zipper of the shell, which is fastened to the awning 150.

The halves of the zipper of the shell may differ in length. For example, the halves of the zipper of the shell do not have to extend along the upper edge of the chair to the same extent. For example, the half of the zipper of the shell, which is configured to mate with the half of the zipper of the cover, may extend along the upper edge of the shell to the first extent, which may be a substantial or full length of the upper edge. Meanwhile, the half of the zipper of the shell, which is configured to mate with the half of the zipper of the awning, may extend along the upper edge of the shell at a second distance, wherein the first distance is greater than the second distance. In other words, the half of the zipper, which is configured to be attached with the help of the zipper to the awning, may be shorter in length than the half of the zipper, which is configured to be attached with the help of the zipper to the fabric cover of the chair. This difference in zipper length corresponds to the size and position of the fabric cover and awning.

In addition, with reference to Fig. 9, the inner side of the upper seat 250 is designed to be substantially covered by the fabric cover 223 applied thereto. Thus, the half 200C of the zipper of the shell, which is sewn to the upper seat 250 and is designed to be attached with a zipper to the fabric cover 223, is designed to pass substantially around the entire upper edge of the shell 255 in such a way that the fabric cover 223 can be attached with a zipper along the entire length of the half 200C of the zipper of the shell in such a way as to cover the inner side of the upper seat 250.

An awning (not shown) 150, which is designed to provide protection from the sun and/or rain, may be arranged in such a way that it extends generally outward from the upper region of the upper seat 250 in such a way that it extends at least over the head, if not at least over a part of the body of the infant in the upper seat 250 and protects them. Thus, with reference to FIG. 9, the half 200A of the zipper of the shell, which is fastened to the awning 150, begins slightly higher along the upper edge 204 ′ of the side walls 204 of the shell 255. For comparison, the half of the zipper 200C of the shell, which is fastened to the fabric cover 223, begins substantially in the lowermost region of the upper edge 204 ′ of the side walls 204 of the shell 255. In other words, the half 200A of the zipper of the shell, which is configured to be fastened to the awning 150, extends along the upper edge 213 ′ of the rear wall 213 and down the corresponding upper edges 204 ′ of each side wall 204. At least half 200A of the zipper of the shell, which is connected to the half of the zipper of the awning, does not extend down the upper edges 204' of the side walls 204 in the same way as the half 200C of the zipper of the shell, which is configured to be fastened to the fabric covering 223. Thus, the half 200A of the zipper of the shell, which is configured to be attached by means of a zipper to the awning 150, is sewn to the shell 255 in such a way that it is located directly next to the upper edge of the shell 255. In addition, the half 200C of the zipper of the shell, which is configured to be attached by means of a zipper to the fabric covering 223, is sewn to the half 200A of the zipper of the shell in such a way that it is located at a distance inward from the half 200A of the zipper of the shell along its length, and thus the half 200C of the zipper extends along a length that is located immediately adjacent to the 200A zipper half of the shell and is located at a distance inward from it.

The zipper of the cover and the zipper of the awning of the zipper device are designed in such a way that their fastening is performed in opposite directions. In the example shown, the zipper puller of the awning is designed with the possibility of pulling, starting from the side wall 204A to the side wall 204B (not shown in this drawing), in order to fasten the zipper of the awning; while the zipper puller of the cover is designed with the possibility of pulling in the opposite direction, from the side wall 204B to the side wall 204A, in order to fasten the zipper of the cover. Thus, the initial box of the zipper of the awning is designed at the beginning of the teeth of the zipper of the awning on the side wall 204A; and the initial box of the cover zipper is formed at the beginning of the teeth of the cover zipper on the side wall 204B.

In Fig. 10, the device of the zipper is additionally illustrated. The zipper half 200A of the zipper shell of the awning extends at least partially along the outermost upper edge of the shell 255. The zipper half 200C of the zipper shell of the cover is parallel to the zipper half 200A of the shell and is located at a distance inward from it and extends at a greater distance along the side walls (side wall 204A is shown here).

The halves 200A, 200C of the zipper of the shell are sewn to the plastic shell 255. Each half of the zipper typically consists of a flap toothed portion 300 and a base portion (not visible) through which the half of the zipper is attached to the shell. In Fig. 10 it is shown that the seams 302 extend under the flap portions of the halves of the zipper and parallel to the outermost upper edge of the shell. (In the present example, the flap portion of the zipper 200A of the half of the shell is partially folded around the seams in such a way that the seams are visible under and above the folded flap portion).

If necessary, the base parts of the halves of the zipper of the shell are at least partially connected to each other by means of a binder, for example, a fabric binder. In some embodiments, the device consisting of the halves of the zipper of the shell connected to each other by means of a binder and their connection by means of a binder is placed inside a designated recess, for example a stepped recess, formed along the shell near its upper edge. In such a design, the connection by means of a binder can be aligned with the upper edge of the shell in such a way that it does not protrude above the outer surface of the shell. The connection together by means of a binder with the halves of the zipper of the shell can be attached to the shell by at least one common sewing seam. The presence of a bonding agent located within the recess may also be advantageous in that the sewing seam that attaches the bonding agent to the plastic shell is made through a relatively thin layer of plastic (defined by the stepped recess).

In the present example, the above-mentioned structure is illustrated in Fig. 10, which shows a cross-sectional view along the length of the back support, including a part of the zipper device. Half 200A of the zipper of the awning zipper shell and half 200C of the zipper of the cover zipper shell are shown. Each of the halves of the zipper of the shell comprises a folding toothed part 300 (only one tooth of each appears in this cross-sectional view) and a base part 304. Both base parts are connected to each other by means of a binder 306 (for example, a fabric binder, a tape or a strip). If necessary, the base parts are welded to each other.

The device, consisting of the halves of the zipper of the shell connected to each other by means of a binder, is placed inside the designated stepped recess 308 formed in the plastic material of the shell 255, in such a way that this device does not protrude beyond the surface of the shell, forming a smoothed external profile. The recess 308 can extend along the length of the outermost upper edge of the shell.

The device consisting of the halves of the zipper of the shell connected to each other by means of a binder is sewn to the plastic material of the shell by one or more sewing seams, not shown in Fig. 11. The stepped recess 308, as illustrated, comprises a first wall 309, through which the device of the zipper (together with the binder) is sewn to the shell, for example by means of one or more sewing seams, and a second wall 311, transverse to the first wall, which defines a height defining the depth of the recess in relation to the outer, rearwardly facing surface of the shell. The thickness of the connection by means of the binder, including the halves of the zipper of the shell, can be similar to or smaller than the depth defined by the recess, such that the connection by means of the binder does not protrude outwardly from the surface of the shell. In addition, since the thickness of the shell decreases along the first wall of the recess, sewing the zipper to the plastic material of the shell on this wall can be facilitated.

Returning to Fig. 11, in this example the seams 302 consist of two seams, wherein the first inner seam holds together the bonding agent and the base portions of the shell zipper halves, and the second outer seam holds the device consisting of the bonded together shell zipper halves to the plastic shell material in the recess.

The convertible child safety seat assembly according to the present utility model can be designed to swing, when it is in storage mode and located on the outer support surface, between a neutral position and at least one of the forward and rear tilt positions.

In general, the assembly may have one or more lowermost regions which in the neutral position are configured to make contact with an outer support surface which may be a platform, ground, floor or any other suitable surface which provides the possibility of positioning and rocking said assembly on it. The assembly may further have at least one of the front and rear regions which may be configured to make contact with the outer support surface when the assembly is tilted due to its rocking into a corresponding one of the front and rear tilted positions. For example, the front and/or rear regions may be located above the outer support surface when the assembly is in the neutral position and may make contact with the outer support surface when the assembly is tilted (or, in other words, rocked) into its front and/or rear tilted position. The outer support surface as a whole may be imaginarily represented by a support plane which includes said one or more lowermost regions of the assembly when the assembly is in the neutral position and includes the front and/or rear regions when the assembly is in the corresponding tilted position.

In some cases, said one or more lowest regions may comprise at least one of the lowest region of the chair, that is, the lowest region of the lower support when the assembly is in the neutral position, and the first region of the legs of the assembly, which may be the lowest region of the legs (lowest regions of the legs) when the assembly is in the neutral position. For example, one or both of the lowest region of the lower support and the lowest region of the legs may constitute said one or more lowest regions of the assembly when the assembly is in the neutral position. In any case, the lowest region of the support, that is, the lowest region of the chair is closest to the support plane in the neutral position, regardless of whether it coincides with it or not. In other words, in cases where said one or more lowest regions of the assembly do not comprise the lowest region of the chair, the lowest region of the chair is the region of the lower support that is closest to the support plane.

In some cases, the front and/or rear regions of the assembly may consist of at least one second region of at least one pair of legs (of the front pair and the rear pair of legs), which in the neutral position may be located above the outer support surface, and in the front and/or rear inclined position may be configured to make contact with the outer support surface, for example, due to the curved shape of the legs. For example, the second region (regions) of the legs may extend further in the forward and/or rear direction than the corresponding front part of the lower support and/or the rear part of the lower support, thereby increasing the swing range of the assembly compared to what the swing range would be if only the lower support took part in the swing with its curved lower part. The swing range may be defined by the total area or the total curved length of the assembly, which will make contact with the outer support surface, when the assembly swings on it in a full swing cycle between the neutral position and the inclined positions.

Accordingly, the second region(s) and any region constituting the lowest region(s) of the assembly together form a continuous curved shape, at least as seen in a side view of said assembly. For example, in the case where the lowest region of the chair partially or completely constitutes the lowest region of the assembly, the lowest region of the chair and the second region(s) of the legs form a continuous curved shape in a side view of said assembly.

In fact, the second region(s) of the legs may have a participatory part in the rocking on each of the second region(s). The participatory part may be that part of the legs at least a part of which participates in the rocking of the assembly or, in other words, makes contact at least at some stage of the rocking with the outer support surface.

The legs, which have the second region (regions), can also have at least one third region, located at a distance from the first and second region (regions) and constituting those regions of the legs, which may not make contact with the outer supporting surface at any stage of swinging of the said unit on it. In fact, the third region (regions), which may not make contact with the outer supporting surface at any stage of swinging of the unit, can comprise the majority of the legs. The part (parts) participating in the swing can be made of a material, which improves at least one quality of swinging of the second region (regions) compared to that which the second region (regions) (or at least the part (parts) participating in the swing) would have, if they were made of the material, from which the third region (regions) are made. For example, the third region (regions) can be made of a material, which is not required for improving any quality of swinging, at least because the third region (regions) may not make contact with the outer supporting surface at any stage of swinging of the unit. The quality of the swing can generally be considered as the characteristic that plays a role in providing a smooth and comfortable sensation for the baby while positioned in the knot.

In some cases, the quality of the swing may be a higher frictional capability, such that the part participating in the swing constitutes a friction-increasing part. The friction-increasing parts in the areas that make contact with the outer support surface during the swing provide a controlled swing, such as its speed, the extent (range) of the swing and the prevention of unintentional sliding movement of the unit on the outer support surface, thereby providing a safe and comfortable swinging sensation for the infant. The material from which the friction-increasing parts are made may have a material having a higher frictional capability than the material of the at least one third area or areas that remain free from contact with the outer support surface during the swing. It should be understood that for the purposes of the present description, the comparison between the frictional capability of any two materials is considered to be made under all those identical conditions that can affect the frictional capability, such as with respect to the same outer support surface. For example, the frictional property of the material of which the friction-increasing parts are made, which will be higher than that of any other material, means that the frictional property of the material of which the friction-increasing parts are made will be higher than that of another material, when measured using the same external support surface under the same circumstances, physical properties and environment. In other words, the material of the friction-increasing part contributes to more friction between the friction-increasing parts and the external support surface than the friction that will exist between the third region(s) (or other areas of the legs that remain free from contact with the external support surface) and the external support surface.

In some cases, the quality of the swing may be soft, so that the part participating in the swing constitutes a soft contact part. The soft contact parts in the areas that make contact with the outer support surface during the swing provide a softer contact with it and, thus, a smoother and more controlled swing, for example, by damping the swing as the unit approaches its inclined positions. It should be understood that the material from which the friction-increasing part is made may be such as to improve both the quality of the swing described above, i.e., provide a friction-increasing part that also acts as a soft contact part.

In fact, all regions, for example, said one or more lowermost regions, regardless of whether they consist of any one or both of the lower support and the legs, can have a part participating in the swing similar to that described above with respect to the second region (regions), and the entire description of the part participating in the swing described above with respect to the second region (regions) will apply to the parts participating in the swing of said one or more lowermost regions of the assembly. For example, the parts participating in the swing of said one or more lowermost regions of the assembly can be made of a material different from the material of at least one other region of the assembly (which remains free from contact with the outer support surface during swinging and can constitute the majority of at least one of the lower support and the legs), and configured to improve at least one quality of swing compared to that which said part participating in the swing would have if it were made of the material from which said other region is made. The quality of the swing is at least one of a higher friction ability, so that the part participating in the swing constitutes a friction-increasing part in the same way as described above with respect to the second region(s), and softness, so that the part participating in the swing constitutes a part with a soft contact in the same way as described above with respect to the second region(s). The material of the parts participating in the swing of said one or more lowermost regions may be the same or different from the material of the parts participating in the swing of the second region(s).

In some cases, the material of the areas that must remain free from contact with the outer support surface comprises plastic, aluminum or any other metal/alloy or any other material that is strong enough to provide the strength of the unit and light enough for the unit to be carried by a person. The material of the areas (parts participating in the swing) that must make contact with the outer support surface may comprise softer materials, such as rubber or any other material suitable for providing the swing properties described above. In addition to the swing properties, the material of the parts participating in the swing ensures resistance to or prevention of mechanical damage to the legs and/or the lower support, such as due to wear, and to the outer support surface, such as when the outer support surface comprises a carpet or otherwise made soft top layer, as well as car seats when the unit is located on them.

During operation of the unit as a rocker, that is, when the unit is located on the outer support surface in the storage mode and in the neutral position, said one or more lowermost regions make contact with the outer support surface (which coincides with the support plane). When the unit is rocked (tilted/deflected) into its inclined position, initially said one or more lowermost regions take part in the rocking (due to their curved shape). As soon as the second region (regions) comes into contact with the outer support surface and due to the curved shape of the legs, they provide the possibility of additional tilting of the unit into its inclined position, thereby increasing the range of rocking compared to what the range of rocking would be if only said one or more lowermost regions took part in it. The wheels of the legs constitute stoppers for limiting the rocking of the unit in the inclined position, thereby limiting the range and degree of rocking. In some examples, the wheels can be configured to be detachable from the legs, and in such examples, the far ends of the legs will act as stoppers. The diameter of the far ends can be smaller than the diameter of the wheels, and therefore when the wheels are detached, the swing range can be further increased.

In the present example illustrated in Fig. 12A-12E, the convertible assembly 210 of the child car seat is shown in a storage mode (similar to that in which the assembly 10 is shown at least in Fig. 1A), and may have an operating mode (similar to that(s) in which the assembly 10 is shown at least in Fig. 1B-1D). The assembly 210 has a horizontal support plane 234 (also referred to herein as a "base plane", "base plane" and "horizontal base plane", where all these terms are used interchangeably), which in Fig. 12A-12D represents an outer support surface 234 and is configured to swing on the outer support surface 234 between a neutral position (shown in Fig. 12A and 12D) and a rearward tilted position (shown in Fig. 12B and 12C). The lower support 230 comprises a curved lower part 233 having a lowermost region 232 of the chair, which in the illustrated example constitutes one of said one or more lowermost regions of the assembly 210. For example, as can be seen from Fig. 12A and 12D, in the neutral position the support plane 234 comprises the lowermost region 232 of the chair. The lower support 230 further comprises a rear part 238 and a front part 239, between which the curved lower part 233 extends, which at least partially contributes to the rocking of the assembly 210.

The upper seat 250 comprises a rear portion 252 for back support, connected to the rear portion 238 of the lower support 230, and a front portion 254 for feet, connected to the front portion 239 of the lower support 230. The infant can sit on the upper seat 250, with its feet positioned towards the front portion 254 for feet and back towards the rear portion 252 for back support.

The assembly 210 further comprises legs 270 having distant ends 271 with wheels 278 which can be detachably or fixedly connected thereto, and near ends 272 pivotally connected to the lower support 30 with the possibility of rotation. The legs 270 are configured to be manipulated between a storage state associated at least with a storage mode of the assembly, in which at least a portion of each leg with a wheel is located above the support plane 234 (as shown in Fig. 12A-12D), and an operating state associated at least with an operating mode of the assembly, in which at least the said portion of each leg with a wheel is located under the support plane 234 in such a way as to ensure the possibility of rolling the chair assembly with the help of the said wheels, made, for example, in such a way as described above in this document with respect to the legs 70 of the assembly 10.

The legs 270 comprise a pair of front legs 270A and a pair of rear legs 270B, of which, in the illustrated example, the front legs 270A have a curved shape and participate in the swinging of the assembly, as described in this document below. It should also be understood that in some examples, the rear legs can also be configured to participate in the swinging in addition to or as an alternative to the front legs.

In this example, the front legs 270A have a first region 273, which is also the lowest region 273 of the legs, which in the illustrated example also represents another one of the said one or more lowest regions of the assembly. For example, as can be seen from Fig. 12A and 12D, in the neutral position, the lowest region 273 of the legs is located above the support plane 234 and also coincides with it. In some examples, the first region may not constitute the lowest region of the legs or may constitute the lowest region of the legs, but may not constitute the said one or more lowest regions of the assembly. For example, the first region may be located above the support plane 234 and not coincide with it.

In this example, the front legs 270A have a second region 275, which also constitutes the rear region 275 of the unit 210 and thus participates in the swinging of the unit. For example, as can be seen from Fig. 12B and 12C, in the rear inclined position, the second region 275 coincides with the support plane 234, that is, it is designed with the possibility of making contact with the outer support surface 234, when the unit is located on it and is in the rear inclined position. The second region 275 extends further in the rear direction RD than the rear part 238 of the lower support 230, and forms a continuous curved shape (best seen in Fig. 12E) with the said one or more lowermost regions of the assembly, which in the illustrated example comprise the lowermost region 232 of the seat and the first region 273 of the front legs 270A, in the side view of the assembly 210. In the illustrated example, since the first region 273 also takes part in the rocking of the assembly, the second region 275 is located near the first region 273 and may even partially overlap with it. In some examples, the first region and the second region may be located at a distance from each other.

In this example, the front legs 270A have a third region 277 located at a distance from the first region 273, as well as from the second region 275. It should be understood that, although in the illustrated example, the third region 277 was shown facing away from the support plane 234, in some examples it can face the support plane 234 and can be located on a part of the legs that will not make contact with the outer support surface during rocking, for example, at the far ends of the legs or near them, which may not make contact with the outer support surface due to the presence of wheels. In fact, any such region of the legs can constitute the third region, which will not make contact with the outer support surface during rocking of the assembly.

The front legs 270A can be made of a first material, which can also be the material from which the third region 277 is made. In fact, the third region 277 can constitute the majority of the front legs 270A. The second region 275 has a part 275A participating in the swing, made of a second material different from the first material. The second material is configured to improve at least one swing quality of the part 275A participating in the swing compared to that which the part 275A participating in the swing would have if it were made of the first material. For example, the second material can have a higher friction capability compared to the first material and/or can be softer than the first material. Therefore, the part 275A participating in the swing can constitute a friction-increasing part and/or a soft contact part.

The lower support 230 comprises another region 240, located at a distance from the lowermost region 232 of the chair. It should be understood that although in the illustrated example the other region 240 is shown not facing the supporting plane 234, in some examples it can face the supporting plane 234 and can be located in a part of the lower support that does not make contact with the outer supporting surface during rocking, for example, on the curved lower part 233, on a part that may not make contact with the outer supporting surface, for example due to the fact that the lowermost region 232 of the saddle is formed as projecting towards the supporting plane in relation to other parts of the curved lower part 233. Such other parts of the curved lower part can form another region. The other region 240 can be considered together with the third region 277 at least because both of these regions represent those regions of the legs and the lower support that will remain free from contact with the outer supporting surface during rocking of the assembly on it. Accordingly, said other region 240 may constitute the majority of the legs 270A and the lower support 240.

The lower support 230 can be made of a third material, which can also be the material from which the other region 240 is made. The lowest region 232 of the chair has a part 232A participating in the swing, made of a fourth material different from the third material. The fourth material is designed to improve at least one quality of the swing of the part 232A participating in the swing compared to that which the part 232A participating in the swing would have if it were made of the third material. For example, the fourth material can have a higher friction capacity compared to the third material and/or can be softer than the third material. Therefore, the part 232A participating in the swing can constitute a friction-increasing part and/or a soft contact part.

In the present example, since the first region 273 of the front legs 270A also constitutes the said one or more lowermost regions of the unit 210 and takes part in its swing, the first region also has a part 273A taking part in the swing, which is made of a fifth material different from the first and third materials. The fifth material is designed to improve at least one swing quality of the part 273A taking part in the swing compared to that which the part 273A taking part in the swing would have if it were made of the first or third material. For example, the fifth material can have a higher friction ability compared to the first and third material and/or can be softer than the first and third material. Therefore, the part 273A taking part in the swing can constitute a friction-increasing part and/or a soft contact part.

It should be understood that the first and third materials may be the same or different and may comprise plastic, aluminum or any other metal/alloy or any other material that is hard enough to provide the strength of the assembly and light enough for the assembly to be carried by a person. The second, fourth and fifth materials may be the same or different and may comprise softer materials, such as rubber or any other material suitable for providing the above-described swinging qualities. In fact, in the present example, the swinging part 273A of the first region 273 and the swinging part 275A of the second region are formed continuously on the surface of the front legs 270A facing the support plane 234.

In this example, the parts participating in the swing are shown as pads attached to the corresponding parts (legs and lower support). It should be understood that in this document, some or all of the parts participating in the swing may be formed within the corresponding parts, and not attached to them as pads. For example, the lower support and/or legs may contain recesses for receiving the parts participating in the swing. In some examples, some or all of the parts participating in the swing may be made as a single unit with the corresponding parts. In some examples, some or all of the parts participating in the swing may be made as a single unit with the corresponding parts.

During operation of the unit 210 as a rocker, that is, when the unit 210 is located on the outer support surface in the storage mode and in the neutral position, the lowest region 232 of the curved lower part 233 of the lower support 230 and the first region 273 make contact with the outer support surface (which coincides with the support plane 234). When the assembly 210 is rocked (tilted/tilted) into its rear tilted position, initially the curved lower portion 233 (due to its curved shape) and the first region 273 participate in the rocking. As soon as the rear portion 238 of the lower support 230 comes into contact with the outer support surface, simultaneously the second region 275 (extending further rearward than the rear portion 238 and being curved) comes into contact with the outer support surface and, due to the curved shape of the front legs 270A, provides the possibility of additional tilting of the assembly 210 into its rear tilted position, thereby increasing the range of rocking compared to what the range of rocking would be if only the lower support participated in it. The wheels 286A of the front legs 270A constitute stoppers for limiting the rocking of the assembly in the rear tilted position, thereby limiting the range and degree of rocking. In some examples (for example, in the one shown in Fig. 13A-13F), the wheels 286A may be configured to be detachable from the legs, and in such examples, the distal ends 271 will act as stoppers. The diameter of the distal ends 271 will be smaller than the diameter of the wheels 286A, and therefore, when the wheels are detachable, the swing range is further increased.

The convertible unit of the child car safety seat according to the present utility model may comprise one or more wheels connected to the corresponding legs by means of a quick release mechanism. Such wheels may be detached from the seat unit, for example, when the unit is to be used in the seat installation mode in the car or in the storage mode. The wheels may be detached to prevent contamination/damage/injury from the wheels of a child sitting next to the seat unit or the seat of the car itself, when the unit is to be placed in the car.

In the present example illustrated in Fig. 13A-13F, the convertible assembly 210 of the child car safety seat comprises a lower support 230 having a rear portion 238 and a front portion 239, and a horizontal support plane 234 passing through the lowest region 232 of the lower support 230, also referred to herein as the lowest region 232 of the seat. The upper seat 250 is connected to the lower support 230 in such a way that the back support portion 252 of the upper seat 250 is connected to the rear portion 238 of the lower support 230, and the foot portion 254 of the upper seat 250 is connected to the front portion 239 of the lower support 230.

The assembly 10 further comprises legs 270 having wheels 286 configured to be manipulated between the storage state shown in Fig. 13A-13E and the operating state. It should be understood that the legs 270 may comprise some or all of the features of the legs 70 described above with respect to the assembly 10, and their description at least with respect to the manipulation of the legs 70 between the storage state and the operating state also applies to the legs 270 and has not been repeated in this document for the sake of brevity of the present description. For example, in the storage state of the legs 270, the wheels 286 are located above the support plane 234, and the assembly 210 is configured to be placed in a car or on a support surface in a position suitable for securing an infant therein, and in the operating state of the legs 270, the wheels 286 can be located below the support plane 234 so as to allow the chair assembly 210 to roll using the wheels 286.

The legs 270 comprise a front pair of legs 270A having front wheels 286A and a rear pair of legs 270B having rear wheels 286B. In general, at least one of the front and rear pairs 270A and 270B of the legs 270, similarly to the legs 70, can be configured to rotate backwards toward the back support portion 252 for manipulation from the operating state to the storage state in such a way that in the storage state the wheels 286 are located closer to the back support portion 252 than the foot portion 254. In the present example, both the front and rear pairs of legs 270A and 270B are configured to rotate backwards toward the back support portion 252 for manipulation from the operating state to the storage state in such a way that in the storage state the wheels 286 are located closer to the back support portion 252 than the foot portion 254. In some examples, only the front pair of legs 270A may be configured to pivot rearward, and in the stored state, the front wheels 286A are positioned closer to the back support portion 252 than the foot portion 254.

In the present example, as best seen from Fig. 13C, in the stored state of the legs 270, the front wheels 286A project laterally (in the lateral direction depicted by the arrow LT) relative to the lower support 230 to a greater extent than the rear wheels 286B in the rear view (Fig. 13C) of the assembly 210. In the present example, the front wheels 286A are connected to the front legs 270A by a quick release mechanism. In some examples, the rear wheels 286B may also be connected to the rear legs 270B by a quick release mechanism having any suitable design to allow the rear wheels to be connected and disconnected while allowing the wheels to roll when connected.

In general, the front wheels 286A can be connected to the front legs 270A by a quick release mechanism that allows the wheels to be removed in a wheel removal direction that extends laterally relative to the lower support 230, for example, parallel to the transverse direction shown by the arrow LT. Removing the wheels in the lateral direction allows the wheels to be removed by a person sitting in the vehicle next to the unit after the unit has been placed in the vehicle.

Each of the front wheels can be removably connected to its corresponding leg in the same way, however, only one of them is described here for the sake of brevity. The front wheel 286A can comprise a connection element with a leg that will extend along the direction of removal of the wheel when the wheel is connected to the corresponding leg, and the corresponding front leg 270A can comprise a connection element with a wheel that extends along the direction of removal of the wheel. The connection element with a leg and the connection element with a wheel can form a quick release mechanism and can have any suitable design that provides the possibility of a detachable connection with each other, allowing the wheel to rotate together with the connection element with a leg relative to the connection element with a wheel about an axis of rotation of the wheel parallel to the direction of removal of the wheel. For example, the connection element with a leg and the connection element with a wheel can form a pair consisting of an elongated recess and an elongated projection, one of which can be located on the wheel and the other on the leg. In some examples, the foot connection element and the wheel connection element may comprise two parts of a mechanical, electrical, or magnetic connection device that are releasably connected to each other to allow rotation of the wheel relative to the foot.

The quick release mechanism comprises a release actuator for actuating the release of the connecting element with the leg from the connecting element with the wheel. For example, the release actuator may be in the form of a button or a lever (mechanical or electronic/electrical), which can be actuated by the user to remove the wheel. The release actuator may be located on the leg or wheel in any location suitable for user access to the release actuator, and is sufficiently hidden to prevent unintentional actuation of the release of the wheel.

In this example, the front wheel 286A has a member 287 for connecting to the leg in the form of an elongated projection that extends parallel to the direction WR of removal of the wheel when the wheel 286a is connected to the leg 270A. The front leg 270A has an elongated member 288 for connecting to the wheel in the form of an elongated groove that extends parallel to the direction of removal of the wheel. The projection 287 and the recess 288 constitute a quick release mechanism that allows the wheel to rotate around the axis of rotation WA of the wheel. To connect the front wheel 286A to the front leg 270A, the projection 287 is inserted into the recess 288, which is fixed in it, thereby reliably connecting the wheel 286A to the leg 270A and allowing the front wheel 286A to rotate relative to the front leg 270A.

The quick release mechanism comprises a release actuator 289 in the form of a button located in the front leg 270A. To detach the wheel 286A from the leg 270A, the button 289 is pressed, which actuates the release of the wheel 286A by releasing the projection 287 from the recess 288, and then the wheel 286A can be removed in the wheel removal direction WR.

In general, the wheels 286 comprise a rolling area configured to make contact with the supporting surface when the unit 210 rolls on it using the wheels 286, and a remaining area configured to not make contact with the supporting surface when the unit rolls on it. The wheels 286 may comprise a part for holding the wheel, located in said remaining area and configured to be held by the user at least for removing the wheel 286 from the corresponding leg 270. Said remaining area may be in the center of the wheel or near it, and the part for holding the wheel may consist of a central disk or a part thereof. The part for holding the wheel provides the user with the ability to hold the wheel, for example, to remove the wheel from the leg, without touching the dirty rolling area of the wheel.

In this example, the front wheel 286A comprises a rolling region 293 and a remaining region 295 comprising a portion 295A for holding the wheel. Suitable for holding by the user at least for removing the wheel 286A from the corresponding front leg 270A.

Claims (33)

1. A convertible child safety seat assembly comprising: an upper chair having a back support portion and a foot support portion, wherein the upper chair is configured to be manipulated between an upright state in which a first angle is formed between the back support portion and the foot support portion, and an extended state in which a second angle greater than the first angle is formed between the back support portion and the foot support portion; legs having distal ends with wheels and configured to be manipulated between a storage state and a working state, providing the ability to roll said chair unit by means of said wheels; and a device for preventing manipulation of the legs, configured to prevent manipulation of the legs from the operating state to the storage state at least when the upper seat is in the extended state. 2. A convertible child car safety seat assembly according to claim 1, wherein the storage state of the legs is designed to be combined only with the vertical state of the upper seat in the first mode of said seat assembly. 3. A convertible child car safety seat assembly according to claim 2, wherein the extended state of the upper seat is configured to be combined only with the working state of the legs in the second mode of said seat assembly, and the working state of the legs and the vertical state of the upper seat are also configured to be combined with at least one another. 4. A convertible child safety seat assembly according to claim 3, in which the working state of the legs is designed with the possibility of being combined with the vertical state of the upper seat in the third mode of said seat assembly, wherein said seat assembly is designed with the possibility of being brought into its first and second modes only from its third mode. 5. A convertible child safety seat assembly according to claim 3, which in the first mode is designed to be controlled so as to be securely installed, at least indirectly, inside the vehicle. 6. A convertible child safety seat assembly according to claim 3, designed in such a way that manipulation of the legs in the second mode of said seat assembly is prevented, at least indirectly, by keeping the upper seat in the extended position. 7. A convertible child safety seat assembly according to claim 3, further configured such that manipulation of the upper seat in the first mode of said seat assembly is prevented, at least indirectly, by keeping the legs in the stored state. 8. A convertible child safety seat assembly according to claim 1, further comprising a device for preventing manipulation of the seat, configured to prevent manipulation of the upper seat from an upright state to an extended state at least when the legs are in the stored state. 9. A convertible child safety seat assembly according to claim 8, wherein the seat manipulation prevention device is configured to change its states between a locking state in which the seat manipulation prevention device prevents the upper seat from being manipulated into an extended state, and an unlocking state in which the seat manipulation prevention device allows the upper seat to be manipulated between an upright state and an extended state. 10. A convertible child safety seat assembly according to claim 9, wherein the device for preventing manipulation of the seat is configured to prevent manipulation of the upper seat in the locked state into the extended state by locking the upper seat. 11. A convertible child safety seat assembly according to claim 9, wherein the device for preventing manipulation of the seat is configured to prevent manipulation of the upper seat in the locked state into the extended state by locking the mechanism for manipulating the seat. 12. A convertible child safety seat assembly according to claim 11, wherein the device for preventing manipulation of the seat is designed to lock the mechanism for manipulating the seat only when the upper seat is in its upright position. 13. A convertible child safety seat assembly according to claim 8, wherein the device for preventing manipulation of the seat consists of the legs in their stored state. 14. A convertible child safety seat assembly according to claim 13, wherein the device for preventing manipulation of the seat consists of the distal ends of the legs. 15. A convertible child safety seat assembly according to claim 1, wherein the back support portion of the upper seat in the vertical state is located at a first rear angle to the base plane, and in the extended state is located at a second rear angle smaller than the first rear angle, and wherein the back support is designed with the possibility of being manipulated backwards from the vertical state to the extended state. 16. A convertible child safety seat assembly according to claim 1, wherein the distal ends of the legs are configured to be tightly positioned in the stored state of the legs in contact with the rear surface of the back support portion of the upper seat so as to block rearward manipulation of the back support portion, thereby preventing manipulation of the upper seat from an upright state to an extended state, at least when the legs are in the stored state. 17. A convertible child safety seat assembly according to claim 1, wherein the device for preventing manipulation of the legs is configured to change its state between a locking state in which the device for preventing manipulation of the legs prevents manipulation of the legs in the storage state, and an unlocking state in which the device for preventing manipulation of the legs allows manipulation of the legs between the storage state and the operating state. 18. A convertible child safety seat assembly according to claim 1, wherein the device for preventing manipulation of the legs is configured to prevent manipulation of the legs in the locked state in the storage state by locking the legs. 19. A convertible child safety seat assembly according to claim 18, wherein the device for preventing manipulation of the legs is configured to prevent manipulation of the legs in the locked state in the storage state by locking the mechanism for manipulating the legs. 20. A convertible child safety seat assembly according to claim 19, wherein the device for preventing manipulation of the legs is designed to lock the mechanism for manipulating the legs when the legs are in their working condition. 21. The convertible child safety seat assembly of claim 1, wherein the device for preventing manipulation of the legs comprises a leg release element and a leg locking element, wherein the trigger element of the legs is designed with the possibility of controlling the locking element of the legs during launching by means of the upper chair when it is in a vertical state; and wherein the locking element of the legs is designed with the possibility of control by means of said trigger element of the legs, subject to manipulation, during its operation, from the locking state to its releasing state, in which the mechanism for manipulating the legs is released from said locking. 22. A convertible child safety seat assembly according to claim 21, wherein the upper seat is configured to activate the leg release element only when the upper seat is in its upright position. 23. A convertible child safety seat assembly according to claim 22, wherein the leg release element is connected to the upper seat and consists of a part of a mechanism for manipulating the seat in such a way that when manipulating the upper seat into a vertical state, the leg release element is additionally designed with the possibility of maintaining the upper seat in a vertical state. 24. A convertible child safety seat assembly according to claim 1, wherein the device for preventing manipulation of the legs consists of the upper seat in its extended position. 25. A convertible child safety seat assembly according to claim 24, wherein the device for preventing manipulation of the legs consists of a back support portion of the upper seat. 26. A convertible child safety seat assembly according to claim 1, wherein the back support portion comprises an intermediate portion to which the foot portion is connected. 27. A convertible child safety seat assembly according to claim 26, wherein the intermediate portion constitutes the lowermost portion of the upper seat, and wherein the lowermost portion of the upper seat is movable about a vertical axis when the upper seat is manipulated between an upright state and an extended state. 28. A convertible child safety seat assembly according to claim 26, wherein at least the intermediate portion of the back support portion is made of a flexible material.