CN211663319U

CN211663319U - Portable cart frame and children's handcart

Info

Publication number: CN211663319U
Application number: CN202020266387.6U
Authority: CN
Inventors: 刘修平
Original assignee: Unitron Enterprises Zhuhai Co ltd
Current assignee: Unitron Enterprises Zhuhai Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-10-13
Anticipated expiration: 2030-03-06

Abstract

The present disclosure relates to a portable stroller frame and a child stroller. Portable shallow frame includes: a front foot group; a rear foot group; the first joint (1) is fixedly connected with the rear foot group and is rotationally connected with the front foot group; the frame supporting group is rotationally connected with the rear foot group and the first joint (1), is configured to be supported on the first joint (1) and the rear foot group in the unfolding state of the frame of the portable cart, and is folded in the folding state of the frame of the portable cart and folded with the rear foot group; the front support group is respectively connected with the front foot group and the frame support group and is configured to unfold the front foot group in the unfolded state of the frame of the portable cart, fold the front foot group in the folded state of the frame of the portable cart and fold the front foot group and the rear foot group; and the rear support group is respectively connected with the rear foot group and the frame support group, is configured to unfold the rear foot group in the unfolded state of the frame of the portable cart and fold the rear foot group in the folded state of the frame of the portable cart.

Description

Portable cart frame and children's handcart

Technical Field

The present disclosure relates to a portable stroller frame and a child stroller.

Background

The hand cart is a transport vehicle driven by manpower, and can be used for transporting goods, babies and the like in short and medium distances. In order to reduce the space occupation of the trolley in the non-use state, some trolleys in the related art can realize the folding and folding functions in the front-back direction, the up-down direction or the left-right direction.

Disclosure of Invention

Research shows that some foldable trolleys in the related art have the problems of multiple folding steps and inconvenience in operation, some trolleys are large in size after being folded and inconvenient to store or transport, and other trolleys are small in size after being folded but easy to shake and unstable when being normally used after being unfolded.

In view of this, the present disclosure provides a frame of a portable stroller and a stroller, which are convenient to fold and stable after being unfolded.

In one aspect of the present disclosure, there is provided a portable stroller frame comprising:

a front foot group;

a rear foot group;

the first joint is fixedly connected with the rear foot set and is rotationally connected with the front foot set;

a frame support set, rotatably connected to the rear leg set and the first joint, configured to support the first joint and the rear leg set in an unfolded state of the portable stroller frame, and to be folded and folded with the rear leg set in a folded state of the portable stroller frame;

a front support group connected to the front leg group and the frame support group, respectively, and configured to unfold the front leg group in an unfolded state of the frame of the portable stroller, and fold the front leg group and the rear leg group in a folded state of the frame of the portable stroller; and

and the rear support group is respectively connected with the rear foot group and the frame support group and is configured to unfold the rear foot group in the unfolded state of the frame of the portable cart and fold the rear foot group in the folded state of the frame of the portable cart.

In some embodiments, the portable cart frame further comprises:

a seat support set respectively connected with the frame support set and the first joint, configured to be unfolded in an unfolded state of the portable stroller frame to form a support for a seat mounted on the portable stroller frame, and to be folded and folded between the frame support set and the front leg set in a folded state of the portable stroller frame.

In some embodiments, the front foot set includes two front foot bars, the front support set including: the frame support comprises a first front connecting support rod, a second front connecting support rod, two front support connecting rods and two front foot connecting pieces, wherein the first end of the first front connecting support rod and the first end of the second front connecting support rod are respectively pivoted with the two front foot rods; the frame support group is configured to drive the two front foot rods to be folded towards the rear foot group through the two front foot connectors when the frame support group is folded towards the rear foot group, and drive the first front connecting support rod and the second front connecting support rod to be folded towards each other through the two front foot connectors so as to enable the two front foot rods to be closed towards each other.

In some embodiments, the first and second front connecting support bars are provided at 180 degrees in the deployed state of the portable cart frame.

In some embodiments, it is provided that both of the two front support links are bent rods, and the ends of both of the two front support links connected to the frame support group are located inward of the ends of both of the two front foot attachments connected to the frame support group.

In some embodiments, there is provided that the hindfoot set includes two hindfoot bars fixedly connected to the two first joints, respectively, the hindfoot set including: the two sliding connecting pieces are respectively arranged on the two rear foot rods in a sliding mode, the two sliding supporting connecting pieces are respectively pivoted with the frame supporting group, one ends of the two sliding supporting connecting rods are respectively pivoted with the two sliding connecting pieces, the other ends of the two sliding supporting connecting rods are respectively fixedly connected with the two sliding supporting connecting pieces, the first cross rod group is provided with four end parts, wherein the first end part and the second end part are respectively pivoted with the two first joints, and the third end part and the fourth end part are respectively pivoted with the two sliding connecting pieces; the frame support group is configured to drive the two sliding connecting pieces to respectively slide towards the lower ends of the two rear foot rods through the two sliding support connecting rods when the frame support group faces the rear foot group and is folded, and drive the cross angle change of the first cross rod group through the sliding of the two sliding connecting pieces so as to enable the two rear foot rods to be relatively close.

In some embodiments, providing the first cross-bar set comprises: the first rear foot sliding connecting rod and the second rear foot sliding connecting rod are arranged in a crossed mode and pivoted at the crossed position, the first end portion and the fourth end portion of the first cross rod group are arranged at the two ends of the first rear foot sliding connecting rod respectively, and the second end portion and the third end portion of the first cross rod group are arranged at the two ends of the second rear foot sliding connecting rod respectively.

In some embodiments, it is provided that the plane of rotation of said first set of crossbar is parallel to the plane of movement of said two rear foot bars towards each other.

In some embodiments, providing the frame support set comprises: the backrest comprises a backrest support rod, a handle support rod, an upper support rod and a second joint, wherein two ends of the backrest support rod are respectively pivoted with the rear foot group and the second joint, two ends of the upper support rod are respectively pivoted with the first joint and the second joint, the handle support rod is fixedly connected with the second joint, and the rear support group and the front support group are both rotationally connected with the backrest support rod.

In some embodiments, the portable cart frame further comprises: a seat frame support group; the seat frame support set comprises: the first cross rod group is provided with four end parts, wherein the first end part and the second end part are respectively pivoted with the two first joints, and the third end part and the fourth end part are respectively connected with the backrest support rod in a rotating way; the frame support group is configured to drive the change of the intersection angle in the second cross rod group through the change of the distance between the backrest support rod and the first joints when the backrest support rod is folded towards the rear foot group, so that the two first joints are closed in opposite directions.

In some embodiments, the second crossbar group comprises: the first seat frame supporting connecting rod and the second seat frame supporting connecting rod are arranged in a crossed mode and are pivoted at crossed positions, the third seat frame supporting connecting rod and the fourth seat frame supporting connecting rod are arranged in a crossed mode and are pivoted at crossed positions, one end of the first seat frame supporting connecting rod and one end of the second seat frame supporting connecting rod are respectively used as a first end portion and a third end portion of the second crossed rod group, the other end of the first seat frame supporting connecting rod and the other end of the second seat frame supporting connecting rod are respectively pivoted with one end of the fourth seat frame supporting connecting rod and one end of the third seat frame supporting connecting rod, and the other end of the fourth seat frame supporting connecting rod and the other end of the third seat frame supporting connecting rod are respectively used as a second end portion and a fourth end portion of the second crossed rod group.

In some embodiments, the portable cart frame further comprises: a seat frame support group; the seat frame support set comprises: the armrest comprises an armrest connecting piece, an armrest group, a seat frame linkage piece, a seat extending connecting piece and a foot rest group, wherein two ends of the armrest connecting piece are respectively pivoted with the armrest group and the backrest supporting rod; the frame support group is configured to drive the armrest group and the included angle of the armrest connecting piece to change through the change of the distance between the backrest support rod and the upper support rod when the backrest support rod is folded towards the rear foot group, so that the armrest connecting piece drives the footrest group to turn over the angle along the direction far away from the front foot group through the seat extension connecting piece and the seat frame linkage piece.

In some embodiments, the frame support set includes two handle support rods, the frame support set further includes two handle seats, two handles, two handle locks and a handle button, the upper ends of the two handle support rods are fixedly connected to the lower ends of the two handle seats respectively, the upper ends of the two handle sets are pivoted to the two handles respectively, the two handles are rotatably connected to the two handle locks and the handle button, the two handles can be unlocked with respect to the two handle seats by pressing the handle button and the two handle locks simultaneously, and the second joint can be unlocked with respect to the upper support rod and the backrest support rod by rotating the two handles with respect to the two handle seats.

In some embodiments, the armrest set comprises: the two side handrails are pivoted with the handrail connecting piece and the upper supporting rod, one ends of the two connecting rods are respectively pivoted with two ends of the front handrail, and the other ends of the two connecting rods are respectively pivoted with the two side handrails.

In one aspect of the present disclosure, there is provided a child stroller comprising: the portable cart frame is provided.

Therefore, according to the embodiment of the disclosure, the front leg set and the rear leg set are respectively unfolded by the front support set and the rear support set in the unfolded state of the portable stroller frame, and the front leg set and the rear leg set are respectively folded by the front support set and the rear support set in the folded state of the portable stroller frame, and the front leg set and the rear leg set are folded in opposite directions, so that the front leg set, the rear leg set and the frame support set in the unfolded state of the portable stroller frame form a stable supporting function by the front support set and the rear support set on the one hand, the portable stroller frame in the unfolded state is not easy to shake, and the front leg set and the rear leg set are folded and folded in opposite directions by driving the front support set and the rear support set by the folding process of the frame support set on the other hand, so that the folding operation of the portable stroller frame is more convenient. In some embodiments, the seat frame support set can strengthen the connection with the frame support set, the rear support set, and the first joint to form a more stable support structure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

fig. 1 and 2 are schematic structural views from different perspectives of some embodiments of a portable cart frame according to the present disclosure in an unfolded state, respectively;

fig. 3 and 4 are schematic structural views of a frame of a portable stroller according to some embodiments of the present disclosure at different viewing angles in a semi-collapsed state;

fig. 5 and 6 are schematic structural views of a frame of a portable stroller according to some embodiments of the present disclosure from different viewing angles in a collapsed state;

FIGS. 7 and 8 are respective partial schematic structural views of different portions of some embodiments of a portable cart frame according to the present disclosure;

fig. 9 is an exploded view of a partial structure within circle a in fig. 1.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Description of the reference numerals

1-a first joint, 2-an upper support rod, 3-a front foot rod, 4-a rear foot rod, 5-a second joint, 6-a handle support rod, 7-a backrest support rod, 8-a sliding support connecting rod, 9-a sliding connecting piece, 10-a front wheel group, 11-a first front connecting support rod, 12-a second front connecting support rod, 13-a front support connecting rod, 14-a front foot connecting piece, 15-a handle seat, 16-a handle, 17-a handle two-way lock pressing piece, 18-a handle button, 19-a rotating connecting piece, 20-a foot rest group, 21-an armrest group, 22-a seat extending connecting piece, 23-a seat frame connecting piece, 24-a sliding support connecting piece, 25-an armrest connecting piece, 26-a rear wheel group, 27-a first rear foot sliding connecting rod, 28-second rear foot slide link, 29-first seat frame support link, 30-second seat frame support link, 31-third seat frame support link, 32-fourth seat frame support link.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

As shown in fig. 1 and 2, are schematic structural views of some embodiments of a portable stroller frame according to the present disclosure from different perspectives in a deployed state. Referring to fig. 1 and 2, in conjunction with fig. 3-9, in some embodiments, a portable cart frame includes: the front leg group, the rear leg group, the first joint 1, the frame support group, the front support group and the rear support group. The terms of orientation "front" and "rear" as referred to herein and hereinafter are determined based on the direction in which the frame of the portable cart is normally moved when pushed. With a stroller comprising such a stroller frame, the child riding the stroller is positioned on the front side of the person pushing the stroller, who is positioned on the rear side of the child. And the directional words "left" and "right" are determined based on the forward direction of the frame of the portable cart. The term "lower" is the direction adjacent to the ground or other surface on a portable carriage resting or operating on the ground or other surface, while "upper" is the direction away from the ground or other surface.

In fig. 1 and 2, the forefoot group comprises two forefoot rods 3. The front leg group can be further provided with a front wheel group 10 at the lower ends of the two front leg rods 3, and the front wheel group is used for being in contact with the ground and walking on the ground. The rear leg group comprises two rear leg rods 4. The rear leg group can be further provided with a rear wheel group 26 at the lower ends of the two rear leg rods 4 for contacting with the ground and walking on the ground.

The first joint 1 is fixedly connected with the rear foot group and is rotationally connected with the front foot group. In fig. 1, the frame of the portable cart comprises two first joints 1, which are respectively fixedly connected with the upper ends of two rear foot rods 4 and are respectively pivoted with the upper ends of two front foot rods 3.

And the frame support group is rotationally connected with the rear foot group and the first joint 1, is configured to be supported on the first joint 1 and the rear foot group in an unfolding state of the portable cart frame, and is folded and folded with the rear foot group in a folding state of the portable cart frame.

Referring to fig. 1 and 2, the frame support group may include: a backrest support rod 7, a handle support rod 6, an upper support rod 2 and a second joint 5. Two ends of the backrest support rod 7 are respectively pivoted with the rear foot group and the second joint 5, two ends of the upper support rod 2 are respectively pivoted with the first joint 1 and the second joint 5, and the handle support rod 6 is fixedly connected with the second joint 5. In fig. 1, the frame support set includes two backrest support bars 7. The two back support bars 7 are pivotally connected to the two rear foot bars 4, respectively, and have portions extending forward with respect to the pivotally connected positions.

In fig. 1 and 3, the frame support set includes two handlebar support rods 6, and the frame support set further includes two handle seats 15, two handles 16, a handle two-way latch 17, and a handle button 18. The upper end of two hand (hold) bracing pieces 6 with the lower extreme of two handle seats 15 is fixed connection respectively, the upper end of two handle groups respectively with two handle 16 pin joints, two handle 16 all with two locks of handle press 17 and handle button 18 rotate to be connected, through pressing simultaneously handle button 18 with two locks of handle press 17 can make two handle 16 for two handle seats 15 unblocks, and through making two handle 16 for two handle seats 15 rotate, can make the second joint 5 with go up bracing piece 2 with unblock between the back bracing piece 7.

In some embodiments, a front support group is coupled to the front leg group and the frame support group, respectively, and configured to unfold the front leg group in the unfolded state of the frame of the stroller and fold the front leg group and the rear leg group in the folded state of the frame of the stroller.

Referring to fig. 1 and 7, in some embodiments, the front support set includes: a first front connecting support rod 11, a second front connecting support rod 12, two front support links 13 and two front foot links 14. The first end of the first front connecting support rod 11 and the first end of the second front connecting support rod 12 are respectively pivoted with the two front foot rods 3, and the second end of the first front connecting support rod 11 is pivoted with the second end of the second front connecting support rod 12.

One end of each of the two front support links 13 is pivotally connected to the first front connecting support rod 11 and the second front connecting support rod 12, and the other end is connected to the frame support set. One end of each front foot connecting piece 14 is respectively pivoted with the two front foot rods 3, and the other end of each front foot connecting piece is respectively connected with the frame supporting group. The front support link 13 and the front foot link 14 are each pivotally connected to a portion of the backrest support bar 7 that extends forwardly relative to the pivot location.

The frame support group can be in the frame support group orientation when the back foot group is folding, through two preceding foot connecting piece 14 drive two preceding foot bars 3 orientation the back foot group is folding, and through two preceding foot connecting piece 14 drive joint support pole 11 and the preceding joint support pole 12 of second are folding in opposite directions before first, so that two preceding foot bars 3 are drawn close together in opposite directions. Therefore, the size of the front foot group in the left-right direction and the front-back direction can be reduced when the frame is in a folding state, and the size of the folded frame is further reduced.

In order to improve the stability of the portable stroller frame in the unfolded state, the first front connecting support rod 11 and the second front connecting support rod 12 are in the unfolded state of the portable stroller frame at 180 degrees, so that the first front connecting support rod 11 and the second front connecting support rod 12 are not easy to generate torque for folding the two when receiving the force through the pivots of the two.

In addition, referring to fig. 2 and 3, in some embodiments, both front support links 13 are curved bars such that the pivot axes of the front support links 13 and the first and second front connecting support bars 11 and 12 do not have to be parallel to the pivot axes of the front support links 13 and the back support bar 7.

In fig. 1-7, the ends of the two front support links 13 that are connected to the frame support group are each located inboard of the ends of the two front foot attachments 14 that are connected to the frame support group. Thus, the two members do not easily interfere with each other when folded, and can be folded into a smaller size.

In some embodiments, a rear support group is connected to the rear leg group and the frame support group, respectively, and configured to unfold the rear leg group in the unfolded state of the frame of the portable stroller and fold and collapse the rear leg group in the folded state of the frame of the portable stroller.

Referring to fig. 2, 4, and 7-8, in some embodiments, the rear support set includes: two sliding connections 9, two sliding support links 8, two sliding support connections 24 and a first set of cross bars. Two sliding connectors 9 are slidably disposed on the two rear foot bars 4, the two sliding support connectors 24 are pivotally connected to the frame support set, one end of each of the two sliding support connecting rods 8 is pivotally connected to the two sliding connectors 9, and the other end is fixedly connected to the two sliding support connectors 24. The sliding connection 9 may be a sleeve that fits over the rear foot bar 4.

The first cross rod group is provided with four end parts, wherein a first end part and a second end part are respectively pivoted with the two first joints 1, and a third end part and a fourth end part are respectively pivoted with the two sliding connecting pieces 9; the frame support group is configured to drive the two sliding connecting pieces 9 to respectively slide towards the lower ends of the two rear foot rods 4 through the two sliding support connecting rods 8 when the frame support group is folded towards the rear foot group, and drive the cross angle change of the first cross rod group through the sliding of the two sliding connecting pieces 9 so as to enable the two rear foot rods 4 to be relatively close. Therefore, the size of the rear foot group in the left-right direction and the front-back direction can be reduced when the frame is in a folding state, and the size of the folded frame is further reduced.

In fig. 2 and 4, the first cross bar group includes: a first rear foot slide link 27 and a second rear foot slide link 28. The first rear leg sliding link 27 and the second rear leg sliding link 28 are arranged crosswise and are pivoted at the crossing position. The two ends of the first rear leg sliding connecting rod 27 are the first end and the fourth end of the first cross rod group, respectively, and the two ends of the second rear leg sliding connecting rod 28 are the second end and the third end of the first cross rod group, respectively. The cross bar group is more stable on support, and can move synchronously when being folded, thereby simplifying the folding operation. In order to further reduce the size in the front-rear direction after folding, the rotation plane of the first cross bar group may be parallel to the plane of the two rear leg bars 4 moving toward each other.

In the above embodiment, both the rear support group and the front support group can be rotatably connected to the backrest support bar 7. Through the operation of the backrest support rod 7, the rear support group and the front support group can be driven to fold or unfold the rear foot group and the front foot group, so that the operation is further simplified.

For a portable cart frame needing to be provided with a seating position, a seat frame supporting group can be added to realize the arrangement and the support of the seating position. In some embodiments, the portable cart frame further comprises: and the seat frame supporting group is respectively connected with the frame supporting group and the first joint 1. The seat support set is configured to expand in an expanded state of the portable stroller frame to form a support for a seat mounted on the portable stroller frame and to collapse and fold between the frame support set and the front leg set in a collapsed state of the portable stroller frame.

Referring to fig. 1-9, in some embodiments, the mount support set comprises: and the second cross rod group is provided with four end parts, wherein the first end part and the second end part are respectively pivoted with the two first joints 1, and the third end part and the fourth end part are respectively connected with the backrest support rod 7 in a rotating way. In fig. 2, the third end and the fourth end of the second cross bar group are rotatably connected to the sliding support links 24, respectively, and the sliding support links 24 are rotatably connected to the backrest support pipe 7.

The frame support group is configured to drive the change of the intersection angle in the second cross rod group through the change of the distance between the backrest support rod 7 and the first joints 1 when the backrest support rod 7 is folded towards the rear foot group, so that the two first joints 1 are closed towards each other. Therefore, the size of the first joint and the size of the backrest support rod in the left-right direction and the front-back direction can be reduced when the frame is folded, and the size of the folded frame is further reduced.

In fig. 2, 7 and 8, the second crossbar group includes: a first seat frame support link 29, a second seat frame support link 30, a third seat frame support link 31, and a fourth seat frame support link 32. The first seat frame support link 29 is arranged crosswise to the second seat frame support link 30 and pivotally connected at the crossing position, and the third seat frame support link 31 is arranged crosswise to the fourth seat frame support link 32 and pivotally connected at the crossing position.

One ends of the first seat frame support link 29 and the second seat frame support link 30 are respectively used as a first end and a third end of the second cross bar group, the other ends of the first seat frame support link 29 and the second seat frame support link 30 are respectively pivoted with one ends of the fourth seat frame support link 32 and the third seat frame support link 31, and the other ends of the fourth seat frame support link 32 and the third seat frame support link 31 are respectively used as a second end and a fourth end of the second cross bar group. The cross bar group is more stable on support, and can move synchronously when being folded, thereby simplifying the folding operation.

Referring to fig. 1, 7-9, in some embodiments, a mount support set comprises: an armrest connector 25, an armrest set 21, a seat frame linkage 23, a seat extension connector 22, and a footrest set 20. Both ends of the armrest connecting piece 25 are respectively pivoted with the armrest group 21 and the backrest support rod 7, and the armrest group 21 is pivoted with the upper support rod 2. One end of the seat extension connecting piece 22 is pivotally connected to the footrest group 20, and the other end is pivotally connected to the first joint 1. Both ends of the seat frame linkage member 23 are rotatably connected to the armrest connecting member 25 and the seat frame linkage member 23, respectively.

In fig. 1 to 6, the handrail group 21 includes: the two side handrails are pivoted with the handrail connecting piece 25 and the upper supporting rod 2, one ends of the two connecting rods are respectively pivoted with two ends of the front handrail, and the other ends of the two connecting rods are respectively pivoted with the two side handrails. Thus, the armrest group 21 can be folded into a smaller size in the left-right direction, thereby making the stroller frame smaller to be folded.

The frame support set is configured to drive the angle between the armrest set 21 and the armrest connecting member 25 to change through the change of the distance between the backrest support rod 7 and the upper support rod 2 when the backrest support rod 7 is folded towards the rear leg set, so that the armrest connecting member 25 drives the footrest set 20 to turn over the angle in the direction away from the front leg set through the seat extension connecting member 22 and the seat frame linking member 23. This enables the armrest group and the footrest group to be folded in the front-rear direction to a smaller size as well as the back support bar 7 is folded toward the rear leg group.

The embodiment of the portable stroller frame disclosed by the invention can be applied to various strollers, such as a child stroller, an article stroller and the like. In one aspect of the present disclosure, there is also provided a stroller comprising any of the foregoing portable stroller frames.

The following description is based on the folding process of some embodiments of the portable stroller frame shown in fig. 1-9 from an unfolded state to a folded state.

When the portable cart frame in the unfolded state needs to be folded, an operator firstly presses the handle secondary lock pressing piece 17 by hands and then presses the handle button 18 by hands, so that the unlocking between the left handle 16 and the right handle 16 is realized. The two handles 16 are pulled down to rotate the two handles 16 and the handle holder 15 (see fig. 3 and 4), and the second joint 5 is unlocked from the backrest support tube 7 and the upper support tube 2 by the rotation.

After the second joint 5 is unlocked from the backrest support tube 7 and the upper support tube 2, the operator presses the handle support rod 6 down to drive the backrest support rod 7 and the upper support tube 2 to rotate around the back leg tube 4 and the first joint 1 respectively. The armrest group 21, the armrest connecting sheet 25 and the sliding support link 8 are driven to move by the movement of the upper support tube 2 and the backrest support tube 7.

When the sliding support link 8 moves downwards, the sliding connection member 9 is driven to slide downwards along the rear foot tube 4. The first rear foot sliding connecting rod 27 and the second rear foot sliding connecting rod 28 are driven to move by the movement of the sliding connecting piece 9, so that the crossing angle of the first cross rod group is changed, and the front foot group, the rear foot group and the frame support group on the left side and the right side are driven to move towards the middle direction. Meanwhile, the sliding support link 8 drives the second seat frame support link 30 and the third seat frame support link 31 to move, so that the crossing angle of the second crossing link group changes, and the first joints 1 on the left side and the first joints on the right side and the frame support group are driven to move towards the middle direction.

When the backrest support rod 7 moves relative to the upper support rod 2, the backrest support rod 7 can drive the armrest connecting part 25 to move, and further drive the seat frame linkage part 23 and the armrest set 21 to move. The seat frame linkage further moves the footrest assembly 20 as an extension link 22 and its attachment. The backrest support tube 7 can also drive the front foot connecting piece 14 to move so as to drive the front foot rod 3 to rotate around the first joint 1 and to approach towards the rear foot rod 4.

The backrest support tube 7 also drives the front support link 13 to move, and the first front connecting support rod 11 and the second front connecting support rod 12 are folded towards each other through the movement of the front support link 13, so that the front foot sets on the left side and the right side move towards the middle direction. Fig. 5 and 6 show the good folding effect of the portable cart frame after the components are folded and close to each other.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A portable cart frame, comprising:

a front foot group;

a rear foot group;

the first joint (1) is fixedly connected with the rear foot group and is rotationally connected with the front foot group;

the frame supporting group is rotationally connected with the rear foot group and the first joint (1), is configured to be supported on the first joint (1) and the rear foot group in an unfolding state of the portable cart frame, and is folded and folded with the rear foot group in a folding state of the portable cart frame;

2. The portable cart frame of claim 1, further comprising:

a seat support group, connected to the frame support group and to the first joint (1), respectively, configured to be unfolded in the unfolded state of the frame of the portable stroller to form a support for a seat mounted on the frame of the portable stroller, and to be folded and folded between the frame support group and the front leg group in the folded state of the frame of the portable stroller.

3. Portable stroller frame according to claim 1, characterized in that said front foot set comprises two front foot bars (3), said front support set comprising: the front leg connecting device comprises a first front connecting support rod (11), a second front connecting support rod (12), two front support connecting rods (13) and two front leg connecting pieces (14), wherein the first end of the first front connecting support rod (11) and the first end of the second front connecting support rod (12) are respectively pivoted with the two front leg rods (3), the second end of the first front connecting support rod (11) is pivoted with the second end of the second front connecting support rod (12), one ends of the two front support connecting rods (13) are respectively pivoted with the first front connecting support rod (11) and the second front connecting support rod (12), the other ends of the two front support connecting rods (14) are respectively pivoted with the two front leg rods (3), and the other ends of the two front leg connecting pieces are respectively connected with the frame supporting group; the frame support group is configured to drive the two front foot rods (3) to be folded towards the rear foot group through the two front foot connectors (14) when the frame support group is folded towards the rear foot group, and drive the first front connecting support rod (11) and the second front connecting support rod (12) to be folded towards each other through the two front foot connectors (14), so that the two front foot rods (3) are drawn towards each other.

4. Portable stroller frame according to claim 3, characterized in that said first (11) and second (12) front connecting support bar are 180 degrees in the unfolded state of said portable stroller frame.

5. A portable stroller frame according to claim 3, characterized in that the two front support links (13) are both knee bars, and the ends of the two front support links (13) connected to the frame support group are both located inside the ends of the two front foot attachments (14) connected to the frame support group.

6. Portable stroller frame according to claim 1, characterized in that said rear foot set comprises two rear foot bars (4) fixedly connected to two first joints (1), respectively, said rear support set comprising: the two sliding connecting pieces (9), the two sliding supporting connecting rods (8), the two sliding supporting connecting pieces (24) and a first cross rod group are arranged, the two sliding connecting pieces (9) are respectively arranged on the two rear foot rods (4) in a sliding mode, the two sliding supporting connecting pieces (24) are respectively pivoted with the frame supporting group, one ends of the two sliding supporting connecting rods (8) are respectively pivoted with the two sliding connecting pieces (9), the other ends of the two sliding supporting connecting rods are respectively fixedly connected with the two sliding supporting connecting pieces (24), the first cross rod group is provided with four end parts, a first end part and a second end part are respectively pivoted with the two first joints (1), and a third end part and a fourth end part are respectively pivoted with the two sliding connecting pieces (9); the frame support group is configured to drive the two sliding connecting pieces (9) to respectively slide towards the lower ends of the two rear foot rods (4) through the two sliding support connecting rods (8) when the frame support group is folded towards the rear foot group, and drive the cross angle change of the first cross rod group through the sliding of the two sliding connecting pieces (9) so as to enable the two rear foot rods (4) to be closed towards each other.

7. The portable cart frame of claim 6, wherein said first cross bar set comprises: first back foot slip connecting rod (27) and second back foot slip connecting rod (28), first back foot slip connecting rod (27) with second back foot slip connecting rod (28) are criss-cross to be arranged, and at the pin joint of crossing position, the both ends of first back foot slip connecting rod (27) are respectively first tip and the fourth tip of first cross rod group, the both ends of second back foot slip connecting rod (28) are respectively the second tip and the third tip of first cross rod group.

8. Portable stroller frame according to claim 6, characterized in that the plane of rotation of said first cross bar set is parallel to the plane of movement of said two rear foot bars (4) towards each other.

9. The portable cart frame of any of claims 1 to 8, wherein said frame support assembly comprises: back bracing piece (7), hand (hold) bracing piece (6), go up bracing piece (2) and second joint (5), back bracing piece (7) both ends respectively with back foot group with second joint (5) pin joint, go up bracing piece (2) both ends respectively with first joint (1) with second joint (5) pin joint, hand (hold) bracing piece (6) with second joint (5) fixed connection, back support group with preceding support group all with back bracing piece (7) rotate to be connected.

10. The portable cart frame of claim 9, further comprising: a seat frame support group; the seat frame support set comprises: the first cross rod group is provided with four end parts, wherein the first end part and the second end part are respectively pivoted with the two first joints (1), and the third end part and the fourth end part are respectively connected with the backrest support rod (7) in a rotating way; the frame support group is configured to drive the change of the intersection angle in the second cross rod group through the change of the distance between the backrest support rod (7) and the first joint (1) when the backrest support rod (7) is folded towards the rear foot group, so that the two first joints (1) are closed towards each other.

11. The portable cart frame of claim 10, wherein said second cross bar set comprises: a first seat frame support connecting rod (29), a second seat frame support connecting rod (30), a third seat frame support connecting rod (31) and a fourth seat frame support connecting rod (32), wherein the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are arranged in a crossed manner and are pivoted at a crossed position, the third seat frame support connecting rod (31) and the fourth seat frame support connecting rod (32) are arranged in a crossed manner and are pivoted at a crossed position, one ends of the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are respectively used as a first end part and a third end part of the second cross rod group, the other ends of the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are respectively pivoted with one ends of the fourth seat frame support connecting rod (32) and the third seat frame support connecting rod (31), and the other ends of the fourth seat frame support connecting rod (32) and the third seat frame support connecting rod (31) are respectively used as a second end part and a second end part of the second rod group and a third end part of the A fourth end portion.

12. The portable cart frame of claim 9, further comprising: a seat frame support group; the seat frame support set comprises: the armrest comprises an armrest connecting piece (25), an armrest group (21), a seat frame linkage piece (23), a seat extension connecting piece (22) and a foot rest group (20), wherein two ends of the armrest connecting piece (25) are respectively pivoted with the armrest group (21) and the backrest supporting rod (7), the armrest group (21) is pivoted with the upper supporting rod (2), one end of the seat extension connecting piece (22) is pivoted with the foot rest group (20), the other end of the seat extension connecting piece is pivoted with the first joint (1), and two ends of the seat frame linkage piece (23) are respectively rotatably connected with the armrest connecting piece (25) and the seat frame linkage piece (23); the frame support group is configured to drive the armrest group (21) and the included angle of the armrest connecting piece (25) to change through the change of the distance between the backrest support rod (7) and the upper support rod (2) when the backrest support rod (7) is folded towards the rear foot group, so that the armrest connecting piece (25) drives the footrest group (20) to turn over the angle along the direction far away from the front foot group through the seat extension connecting piece (22) and the seat frame linkage piece (23).

13. The portable stroller frame according to claim 9, wherein the frame support set comprises two handle support bars (6), the frame support set further comprises two handle seats (15), two handles (16), a handle two-way latch (17) and a handle button (18), the upper ends of the two handle support bars (6) are fixedly connected with the lower ends of the two handle seats (15), the upper ends of the two handle sets are pivotally connected with the two handles (16), the two handles (16) are rotatably connected with the handle two-way latch (17) and the handle button (18), the two handles (16) can be unlocked relative to the two handle seats (15) by simultaneously pressing the handle button (18) and the handle two-way latch (17), and the two handles (16) can be rotated relative to the two handle seats (15), can unlock the second joint (5) from the upper support bar (2) and the backrest support bar (7).

14. The portable stroller frame according to claim 12, wherein the armrest set (21) comprises: the two side handrails are pivoted with the handrail connecting piece (25) and the upper supporting rod (2), one ends of the two connecting rods are respectively pivoted with two ends of the front handrail, and the other ends of the two connecting rods are respectively pivoted with the two side handrails.

15. A child stroller, comprising:

a portable cart frame according to any of claims 1 to 14.