CN207072374U - trolley - Google Patents

Abstract

The utility model discloses a handcart, handcart includes: the device comprises paired frame front pipes, paired frame rear pipes, paired vehicle body branch pipes, paired supporting pipes and a rotary positioning device which can be switched between a locking position and an unlocking position, wherein the rotary positioning device is respectively matched with the frame front pipes and the front supporting sections, the frame front pipes and the front supporting sections are locked into a whole at the locking position rotary positioning position, and the frame front pipes and the front supporting sections are respectively released at the unlocking position rotary positioning position. According to the utility model discloses a handcart, through setting up the rotational positioning device, control rotational positioning device switches between locking position and unblock position, can realize cooperation or release between frame head tube and the preceding section, under the release state, can rotate relatively between frame head tube and the preceding section, and then can realize the expansion of automobile body and accomodate to make the convenient operation of handcart, the practicality is strong. When the handcart is in the storage state, the handcart can be conveniently carried, and the occupied space is saved.

Description

trolley

technical field

The utility model relates to the technical field of baby carriages, in particular to a trolley.

Background technique

Most of the existing trolleys for children do not have the function of being foldable. When carrying the trolley out, since the trolley cannot be folded, it is very inconvenient to carry, which brings great inconvenience to users.

In order to solve the above problems, some trolleys in the related art are equipped with a foldable function, but the folding operation is relatively cumbersome, and the locking mechanism is unstable, and the vehicle body is often not fixed firmly, which greatly reduces the practicability and operability of the trolley .

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, the utility model proposes a trolley, which has the advantages of being foldable, easy to operate and highly practical.

The hand trailer according to the embodiment of the utility model includes: a pair of front tubes of the frame, each of the front tubes of the frame extends obliquely upwards from the front to the rear, and the front ends of the two front tubes of the frame are connected to form a U-shaped front tube. frame, the bottom of the front end of the U-shaped front frame is provided with a front wheel; a pair of rear tubes of the vehicle frame, each of the rear tubes of the vehicle frame extends obliquely from front to rear, and the front end of each of the rear tubes of the vehicle frame It is rotatably connected to the middle position of the corresponding front tube of the vehicle frame, and the rear end of each rear tube of the vehicle frame is provided with a rear wheel; a pair of branch pipes of the vehicle body, each of which is connected in sequence and The front branch section, the middle branch section and the rear branch section are fixed into one body. The front branch section and the rear branch section are arranged at intervals and extend upwards from front to back. The middle branch section is connected to the front branch section. Between the rear end of the section and the front end of the rear branch section, the front end of the front branch section is rotationally connected with the rear end of the corresponding front tube of the vehicle frame, and the rear ends of the two rear branch ends are connected to form a U-shape Rear frame, the rear end of the U-shaped rear frame constitutes a handle portion; a pair of support tubes, the upper end of each support tube is rotatably connected with the rear end of the corresponding middle branch section, each of the support tubes The lower end of the lower end of the frame is connected to the rear end of the corresponding rear tube of the vehicle frame; the rotary positioning device can be switched between the locked position and the unlocked position, and the rotary positioning device is connected with the front tube of the vehicle frame and the front tube respectively. The branch section is matched, and the front tube of the vehicle frame and the front branch section are locked into one body at the rotation positioning position of the locking position, and the front tube of the vehicle frame and the front branch section are respectively released at the rotation positioning position of the unlocking position. The branch section, when unlocked, the front end of the rear tube of the frame and the support tube can move toward each other for folding, and the rear end of the rear tube of the frame and the front tube of the frame can move toward each other for folding.

According to the trolley of the embodiment of the utility model, by setting the rotating positioning device, controlling the rotating positioning device to switch between the locked position and the unlocked position can realize the control of the cooperation or release between the front tube of the vehicle frame and the front branch section. In this state, relative rotation can be carried out between the front tube of the vehicle frame and the front branch section, and then the unfolding and storage of the vehicle body can be realized, so that the trolley is easy to operate, strong in practicability, and high in use reliability. When the trolley is in the storage state, it can be carried conveniently and saves occupied space.

According to some embodiments of the present utility model, the trolley further includes: a pair of front extension tubes, the front extension tubes extend forward from the rear ends of the corresponding front tubes of the vehicle frame; a table board, the table board Rotatably connected between the front ends of the two front extension tubes, the table board has a horizontal state and a vertical state; the seat, when the table board is in the vertical state, the seat seat is detachable It is arranged on the table, and the rear end of the seat is supported on the two middle branches.

Specifically, the seat is provided with a bayonet for locking the table.

According to some embodiments of the present utility model, the rotation positioning device includes: a pulling member, the pulling member is movably arranged on the branch pipe of the vehicle body; a pull rope, one end of the pull rope is arranged on the pulling member The puller drives the pull cord to move; the locking member cooperates with the front tube of the vehicle frame and the front branch section respectively, and the other end of the pull cord is connected with the lock The stoppers are connected.

In some embodiments of the present utility model, the locking member is movably arranged on the front branch section between a locking position and an unlocking position, and a locking pin is provided on the locking member; The rotation positioning device includes: an elastic member that pushes the locking member towards the locked position; an active slot is provided on the front tube of the vehicle frame, and the active slot includes a locking segment and an unlocking segment, and the unlocking segment is formed to surround An arc-shaped slot provided on the axis of rotation, the locking section is connected to the unlocking section, the locking pin fits in the unlocking section when in the unlocked position, and the locking pin is stuck in the unlocking section when in the locked position within the locking section.

Specifically, the locking section is connected to a section of the unlocking section and extends inward along the radial direction of the unlocking section.

In some embodiments of the present utility model, the rotation positioning device includes: a locking plate provided on the front support section, the locking member is located between the front support section and the locking plate, The fixed card plate is provided with a fixed groove matched with the locking pin, and the fixed groove is formed in a long strip shape.

In some embodiments of the present utility model, the rotation positioning device includes: a movable clamping plate arranged on the front tube of the vehicle frame, and the movable clamping plate is located between the front tube of the vehicle frame and the fixed clamping plate In between, the movable clamping plate is provided with a movable groove matching with the locking pin, and the shape of the movable groove is the same as that of the movable groove.

In some embodiments of the present utility model, a shaft pin is provided on the front support section, and the locking member, the fixed clamping plate and the moving clamping plate are respectively sleeved on the shaft pin, and the fixed clamping plate is respectively sleeved on the shaft pin. The clamping plate is provided with a fixed clamping plate extension inserted into the front branch section, and the movable clamping plate is provided with a movable clamping plate extension inserted into the front tube of the vehicle frame.

In some embodiments of the present utility model, a part of the edge of the locking plate is formed in an arc shape around the rotation axis, the locking plate is provided with a stopper on the edge of the arc, and the moving card A block is arranged on the board, which is bent toward the fixed card plate and fits with the arc-shaped edge.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of the overall structure of a trolley according to an embodiment of the present invention, wherein the trolley is provided with a seat and a table;

Fig. 2 is a schematic diagram of the overall structure of the trolley according to an embodiment of the present invention, wherein the trolley is provided with a table;

Figure 3 is a rear view of the cart shown in Figure 2;

Fig. 4 is the enlarged schematic view of the part shown in A in Fig. 3;

Fig. 5 is the enlarged schematic diagram of the part shown in B in Fig. 3;

Fig. 6 is the enlarged schematic view of the part shown in C in Fig. 3;

Fig. 7 is an exploded schematic diagram of a rotary positioning device according to an embodiment of the present invention;

Fig. 8 is a schematic structural view of the rotation positioning device according to an embodiment of the present invention when it is in a locked state;

Fig. 9 is a schematic diagram of the cooperation structure of the locking member and the front branch according to the embodiment of the present invention;

Fig. 10 is a schematic structural view of a locking plate according to an embodiment of the present invention;

Fig. 11 is a schematic structural view of a movable pallet according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of the structure of the movable slot according to the embodiment of the present invention.

Reference signs:

Trolley 100,

Frame front tube 10, front wheel 11, movable groove 15, locking section 151, unlocking section 152,

The rear pipe 20 of the vehicle frame, the rear wheel 21,

Body branch pipe 30, front branch section 31, pivot pin 311, middle branch section 32, rear branch section 33, handle part 34, support pipe 40, first movable connector 41, second movable connector 42,

Rotation positioning device 50, pulling member 51, pull cord 52, locking member 53, locking pin 531, fixed clamping plate 54, fixed slot 541, fixed clamping plate extension 542, stopper 543, moving clamping plate 55, moving Slot 551, moving clamping plate extension 552, clamping block 553,

reach tube 60,

table top 70,

Seat 80, bayonet 81.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "bottom", "inner", "outer", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limitations on the invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The trolley 100 according to the embodiment of the present invention will be described below with reference to FIGS. 1-12 . The trolley 100 can be folded and unfolded, which is convenient for users to carry and has strong practicability.

As shown in Fig. 1-Fig. 3, the trolley 100 according to the embodiment of the present utility model comprises: paired vehicle frame front pipe 10, paired vehicle frame rear pipe 20, paired vehicle body branch pipe 30, paired Support pipe 40 , rotation positioning device 50 , paired forward extension pipe 60 , table board 70 and seat 80 .

As shown in FIGS. 1-2 , the front tube 10 of each vehicle frame extends obliquely upwards from the front to the rear, and the entire vehicle body presents a trend that the front end is low and the rear end is high. The front ends of the two vehicle frame front tubes 10 are connected to form a U-shaped front frame, and the two oppositely arranged vehicle frame front tubes 10 form a whole, so that the structural strength of the vehicle body can be improved. round 11. As shown in Fig. 3-Fig. 4, each vehicle frame front tube 10 extends obliquely upwards from front to rear, each vehicle frame rear tube 20 extends obliquely downwards from front to rear, the vehicle frame rear tube 20, the vehicle frame front tube 10 and The ground roughly forms a triangle. The front end of each vehicle frame rear tube 20 is rotatably connected with the middle position of the corresponding vehicle frame front tube 10 , and the rear end of each vehicle frame rear tube 20 is provided with a rear wheel 21 . Specifically, there is one front wheel 11 of the trolley 100, and two rear wheels 21, and the rear rear wheels 21 are located on the left and right sides of the front wheel 11, and the three wheels of the trolley 100 contact the ground.

As shown in Figures 1-2, each body branch pipe 30 includes a front branch section 31, a middle branch section 32 and a rear branch section 33 which are sequentially connected and fixed into one body, and the front branch section 31 and the rear branch section 33 are separated from each other. The middle branch section 32 is connected between the rear end of the front branch section 31 and the front end of the rear branch section 33, and the front end of the front branch section 31 is connected to the rear end of the corresponding vehicle frame front tube 10. Rotate and connect, the rear ends of the two rear branch sections 33 are connected to form a U-shaped rear frame, and the rear end of the U-shaped rear frame constitutes the handle portion 34. When the user uses the handcart 100, he can drive the handcart 100 forward by pushing the handle portion 34 . By arranging the vehicle body branch pipe 30 into three sections, the front branch section 31 , the middle branch section 32 and the rear branch section 33 , the folding of the vehicle body can be satisfied and the occupied space of the trolley 100 can be saved.

As shown in FIGS. 1-3 , the upper end of each support tube 40 is rotatably connected to the rear end of the corresponding middle branch section 32 , and the lower end of each support tube 40 is rotatably connected to the rear end of the corresponding frame rear tube 20 . Specifically, the support pipe 40 is arranged between the rear pipe 20 of the vehicle frame and the branch pipe 30 of the vehicle body, and plays a role of supporting the load of the vehicle body. The upper end portion of the support pipe 40 is bent upwards and backwards to form a first movable connector 41, and the rear end of the first movable connector 41 is rotationally connected with the junction of the middle branch section 32 and the rear branch section 33. The first movable connector 41 The movable joints between the middle branch section 32 , the rear branch section 33 and the support pipe 40 are formed, so that the folding between the support pipe 40 and the vehicle body branch pipe 30 can be realized. As shown in Figures 3-4, the lower end of the support tube 40 is provided with a second movable connector 42, the second movable connector 42 is rotatably connected to the rear tube 20 of the vehicle frame, and the second movable connector 42 forms the support tube 40 and In the movable joint between the rear tubes 20 of the vehicle frame, the support tube 40 can rotate relative to the rear tube 20 of the vehicle frame through the second movable connection piece 42 .

As shown in FIGS. 1-3 , the rotation positioning device 50 is switchable between a locked position and an unlocked position, so that the vehicle body can be folded and unfolded. When the rotating positioning device 50 is in the locked position, the handcart 100 is in the unfolded state, and when the rotating positioning device 50 is in the unlocked position, the handcart 100 can be folded by unfolding, so that the handcart 100 is converted into a folded state.

Specifically, the rotation positioning device 50 cooperates with the frame front pipe 10 and the vehicle body branch pipe 30 respectively. The bar, the frame rear tube 20 and the support tube 40 respectively connected to the integral bar in rotation form a stable triangle, so when the rotating positioning device 50 is in the locked position, the structure of the trolley 100 is stable, and the car body can be kept in a stable unfolded state . When in the unlocked position, the rotating positioning device 50 releases the front pipe 10 of the vehicle frame and the branch pipe 30 of the vehicle body respectively, and relative rotation can be carried out between the front pipe 10 of the vehicle frame and the branch pipe 30 of the vehicle body. The frame rear tube 20 and the support tube 40 form a four-bar linkage structure, thereby enabling the folding of the vehicle body.

When the rotation positioning device 50 is in the unlocked position, the front end of the rear tube 20 of the vehicle frame and the upper end of the support tube 40 can move closer to each other for folding, and the rear end of the rear tube 20 of the vehicle frame and the front end of the front tube 10 of the vehicle frame can move closer to each other. By folding, the folding of the car body can be completed, thereby saving the occupied space of the trolley 100 .

What needs to be explained here is that dividing the vehicle body branch pipe 30 into a Z-shape composed of front branch section 31, middle branch section 32 and rear branch section 33 can make the vehicle body branch pipe 30 structurally rigid at the middle middle branch section 32. And the strength is increased, and can withstand greater pressure. The handcart 100 can use the middle branch section 32 as a key load-bearing component. In addition, in terms of shape, the middle branch section 32 is equivalent to the step of the whole vehicle body branch pipe 30, and the step can be used for positioning the seat seat 80, which simplifies the structure of the whole vehicle.

The upper end portion of the support tube 40 is formed into a first movable connector 41 that is bent upwards and backwards, so that as shown in Figures 1 and 2, the connection between the support tube 40 and the branch pipe 30 of the vehicle body protrudes forward, and when folded, this The design of the protruding part can reduce the interference of the support tube 40 to other components, so that the folding range of the trolley 100 is increased.

As shown in FIG. 3 , FIG. 6 and FIG. 8 , the rotation positioning device 50 includes a pulling member 51 , a pull cord 52 , a locking member 53 , a moving clamping plate 55 and a fixed clamping plate 54 . The pulling member 51 is movably arranged on the branch pipe 30 of the vehicle body, and the pulling member 51 can rotate relative to the branch pipe 30 of the vehicle body. One end of the stay cord 52 is arranged on the pull member 51 to drive the stay cord 52 to move by the pull member 51, and the other end of the stay cord 52 is connected with the lock member 53, and the lock member 53 is connected with the front tube 10 and the front branch section of the vehicle frame respectively. 31 fits.

Specifically, the locking member 53 is movably disposed on the front branch section 31 between a locking position and an unlocking position, and the locking member 53 can realize locking and unlocking of the rotary positioning device 50 by moving itself. When the locking piece 53 is matched with the front tube 10 of the vehicle frame and the front branch 31, the rotation positioning device 50 is locked, and the front tube 10 of the vehicle frame and the front branch 31 are fixed into an integral rod, and the front tube 10 of the vehicle frame and the front branch Relative rotation cannot be carried out between the sections 31, and the vehicle body can maintain the unfolded state. When the puller 51 is pulled, the puller 51 drives the pull cord 52 to move, and then the locking member 53 at the other end of the pull cord 52 can be pulled to move, so that the rotation positioning device 50 is unlocked, and the connection between the front tube 10 of the vehicle frame and the front branch section 31 It can be rotated relative to each other, and the car body can be folded.

As shown in FIG. 9 , a locking pin 531 is provided on the locking member 53 , and the locking pin 531 can realize the locking of the rotation positioning device 50 . The rotation positioning device 50 includes an elastic member (not shown) that pushes the locking member 53 towards the locking position, so that the automatic reset of the locking member 53 can be realized. Specifically, when the pulling member 51 is pulled, the locking member 53 moves toward the unlocking position, and the elastic member is compressed. When the pulling member 51 is released, the elastic member can push the locking member 53 to the locking position by its own elastic force, so as to realize the automatic reset of the locking member 53, thereby facilitating the user's operation.

As shown in Figure 12, the front pipe 10 of the vehicle frame is provided with a movable groove 15, the movable groove 15 includes a locking section 151 and an unlocking section 152, the unlocking section 152 is formed as an arc-shaped groove arranged around the axis of rotation, and the locking section 151 It is connected with the unlocking section 152 , when in the unlocking position, the locking pin 531 is slidingly engaged with the unlocking section 152 , and in the locking position, the locking pin 531 is stuck in the locking section 151 . Specifically, the locking section 151 of the movable slot 15 is connected to one end of the unlocking section 152 and extends inward along the radial direction of the unlocking section 152 . When in the locked position, the locking pin 531 is in the locking section 151, and the locking pin 531 cannot rotate relative to the rotation axis in the movable groove 15, so that the front tube 10 of the vehicle frame and the front branch section 31 cannot be rotated. relative rotation. When unlocking the rotation positioning device 50 , pull the pulling member 51 , the pull cord 52 can pull the locking member 53 to move, and then drive the locking pin 531 to slide away from the locking section 151 . The locking pin 531 enters one end of the unlocking section 152 , and when the front tube 10 of the vehicle frame and the front branch section 31 rotate relative to each other, the locking pin 531 slides in the unlocking section 152 around the rotation axis.

As shown in Figures 7 and 10, the locking plate 54 is arranged on the front branch section 31, the locking member 53 is located between the front branch section 31 and the locking plate 54, and the locking plate 54 is provided with a locking pin 531 The matching fixed groove 541, wherein the fixed groove 541 is formed in a long strip shape. The shape and size of the fixed groove 541 are the same as those of the locking section 151 of the movable groove 15 . The locking plate 54 is provided with a locking plate extension 542 , and when the locking plate 54 cooperates with the front branch 31 , the locking plate 54 inserts the locking plate extension 542 into the lumen of the front branch 31 .

As shown in Fig. 7, Fig. 8 and Fig. 11, the movable clamping plate 55 is arranged on the front tube 10 of the vehicle frame, the movable clamping plate 55 is located between the front tube 10 of the vehicle frame and the fixed clamping plate 54, and the movable clamping plate 55 is provided with The movable groove 551 matched with the locking pin 531 has the same shape as the movable groove 15 . The movable clamp 55 is provided with a movable clamp extension 552. When the movable clamp 55 cooperates with the front tube 10 of the vehicle frame, the movable clamp extension 552 is inserted into the tube cavity of the front tube 10 of the vehicle frame. 10 and the front branch section 31 when relative rotation is carried out, the movable clamping plate 55 follows the front tube 10 of the vehicle frame and rotates relative to the fixed clamping plate 54, and the locking pin 531 is locked in the movable groove 551 and the movable groove 15 of the movable clamping plate 55. Slide in the unlocking segment 152.

In the embodiment of the present utility model, a locking plate 54 is arranged in the rotation positioning device 50, and the locking member 53 is stuck between the front branch section 31 and the locking plate 54. Therefore, the setting purpose of the locking plate 54 is to limit the locking member. 53 can only slide between the locked position and the unlocked position. The movable clamping plate 55 is arranged in the rotation positioning device 50, and the movable clamping plate 55 is provided with a movable groove 551 which cooperates with the locking pin 531 and has the same shape as the movable groove 15. Therefore, the purpose of the movable clamping plate 55 is to guide the locking The direction of movement of the pin 531.

As shown in Fig. 10-Fig. 11 and Fig. 8, a part of the edge of the fixed card plate 54 is formed into an arc shape arranged around the axis of rotation, and the fixed card plate 54 is provided with a stop portion 543 at the edge of the arc shape, and the movable card The plate 55 is provided with a locking block 553 that is bent toward the locking plate 54 and matches the arc-shaped edge. Specifically, when the movable clamping plate 55 cooperates with the fixed clamping plate 54 , the clamping block 553 is clamped on the arc-shaped edge of the fixed clamping plate 54 . When the front tube 10 of the vehicle frame and the front support section 31 are relatively rotated, the clamping block 553 can slide along the arc-shaped edge of the clamping plate 54 . The stop portion 543 on the fixed clamping plate 54 can limit the clamping block 553 in the circumferential direction, thereby making the cooperation between the fixed clamping plate 54 and the movable clamping plate 55 more firm.

As shown in Figures 7-9, a shaft pin 311 is provided on the front branch section 31, and the locking member 53, the fixed clamping plate 54 and the movable clamping plate 55 are respectively sleeved on the shaft pin 311, and the outer side of the shaft pin 311 is in contact with the vehicle body. When the front pipe 10 cooperates, the movable clamping plate 55 and the front pipe 10 of the vehicle body can rotate around the pivot pin 311 .

As shown in FIGS. 1-3 , the front extension tube 60 extends forward from the rear end of the corresponding frame front tube 10 . Specifically, an accommodation space is provided on the front tube 10 of the vehicle frame, and the front extension tube 60 can be directly inserted into the accommodation space to complete the cooperation with the front tube 10 of the vehicle frame, so that the cooperation between the front extension tube 60 and the front tube 10 of the vehicle frame can be achieved. The method is simpler and the production efficiency is improved. The table top 70 is rotatably connected between the front ends of the two front extension tubes 60. The table top 70 has a horizontal state and a vertical state. Toggle between state and portrait state. When the table top 70 is in a horizontal state, the table top 70 can be used as a dinner plate.

As shown in Figure 1, the seat 80 is provided with a bayonet 81 for clamping the table 70, when the table 70 is in a vertical state, the seat 80 is detachably arranged on the table 70, the seat 80 The rear end is supported on two middle branch sections 32 . Specifically, the bayonet 81 is disposed at the bottom of the seat 80 , and when the seat 80 is assembled with the table 70 , the bayonet 81 is clamped on the table 70 in a vertical state. The connection between the seat 80 and the table board 70 is detachable, and the user can install/detach the seat 80 according to actual needs. It should be noted that the front extension tube 60, the table board 70 and the seat 80 are optional technical features, which can be selected and set according to actual usage requirements. When it is not needed in practical application, the front extension tube 60 can be pulled out from the front tube 10 of the vehicle frame, which is more convenient to operate.

According to the trolley 100 of the embodiment of the utility model, by setting the rotation positioning device 50, controlling the rotation positioning device 50 to switch between the locked position and the unlocked position can realize the cooperation between the control frame front tube 10 and the front branch section 31 Or released, in the released state, relative rotation can be carried out between the front tube 10 and the front branch section 31 of the vehicle frame, and then the unfolding and storage of the vehicle body can be realized, thereby making the trolley 100 easy to operate, strong in practicability, and high in reliability. When the trolley 100 is in the storage state, it can be carried conveniently and saves occupied space.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A handcart, characterized in that, comprising: A pair of front tubes of the vehicle frame, each of the front tubes of the vehicle frame extends obliquely upwards from the front to the rear, and the front ends of the two front tubes of the vehicle frame are connected to form a U-shaped front frame, and the bottom of the front end of the U-shaped front frame is arranged have front wheels; A pair of rear tubes of the vehicle frame, each of the rear tubes of the vehicle frame extends obliquely downward from the front to the rear, and the front end of each of the rear tubes of the vehicle frame is rotatably connected with the middle position of the corresponding front tube of the vehicle frame, each A rear wheel is provided at the rear end of the rear tube of the vehicle frame; A pair of vehicle body branch pipes, each of which includes a front branch section, a middle branch section, and a rear branch section that are sequentially connected and fixed into one body, and the front branch section and the rear branch section are arranged at intervals before and after Both extend obliquely from front to back, the middle branch is connected between the rear end of the front branch and the front end of the rear branch, and the front end of the front branch is connected to the corresponding front tube of the vehicle frame The rear ends of the two are rotated and connected, and the rear ends of the two rear support ends are connected to form a U-shaped rear frame, and the rear end of the U-shaped rear frame constitutes a handle portion; A pair of support tubes, the upper end of each support tube is rotatably connected to the rear end of the corresponding middle branch section, and the lower end of each support tube is rotatably connected to the rear end of the corresponding rear tube of the vehicle frame ; A rotary positioning device that can be switched between a locked position and an unlocked position. The rotary positioning device is respectively matched with the front tube of the vehicle frame and the front branch section. The front tube of the frame and the front branch section are locked into one body, and the front tube of the frame and the front branch section are respectively released at the unlocked position and the rotation positioning position. When unlocking, the front end of the rear tube of the frame is in contact with the The upper ends of the support tubes can be moved toward each other to be folded, and the rear ends of the frame rear tube and the frame front tube can be moved toward each other to be folded. 2. The trolley according to claim 1, further comprising: a pair of front extension tubes, the front extension tubes extend forward from the rear ends of the corresponding front tubes of the vehicle frame; a table board, the table board is rotatably connected between the front ends of the two forward extension tubes, the table board has a horizontal state and a vertical state; Seat, when the table is in a vertical state, the seat is detachably arranged on the table, and the rear end of the seat is supported on the two middle branches. 3 . The trolley according to claim 2 , wherein a bayonet for clamping the table board is provided on the seat seat. 4 . 4. The trolley according to claim 1, wherein the rotation positioning device comprises: a pulling piece, the pulling piece is movably arranged on the branch pipe of the vehicle body; A pull cord, one end of the pull cord is arranged on the puller to drive the pull cord to move by the puller; A locking piece, the locking piece is respectively matched with the front tube of the vehicle frame and the front branch section, and the other end of the pull rope is connected with the locking piece. 5. The trolley according to claim 4, wherein the locking member is movably arranged on the front branch section between a locked position and an unlocked position, and a lock is provided on the locking member. Cancellation; The rotation positioning device includes: an elastic member pushing the locking member toward the locking position; An active slot is provided on the front tube of the vehicle frame, and the active slot includes a locking section and an unlocking section. The unlocking section is formed as an arc-shaped slot arranged around the axis of rotation. When in the unlocked position, the locking pin fits in the unlocking section, and in the locking position, the locking pin is stuck in the locking section. 6 . The trolley according to claim 5 , wherein the locking section is connected to one end of the unlocking section and extends inward along the radial direction of the unlocking section. 7. The trolley according to claim 5, wherein the rotation positioning device comprises: a locking plate arranged on the front support section, and the locking member is located between the front support section and the positioning plate. Between the clamping plates, the fixed clamping plate is provided with a fixed groove matching with the locking pin, and the fixed groove is formed in a strip shape. 8. The trolley according to claim 7, wherein the rotation positioning device comprises: a movable clamping plate arranged on the front tube of the vehicle frame, and the movable clamping plate is located between the front tube of the vehicle frame and the front tube of the vehicle frame. Between the fixed clamping plates, the movable clamping plate is provided with a movable groove matched with the locking pin, and the shape of the movable groove is the same as that of the movable groove. 9. The trolley according to claim 8, wherein a pivot pin is provided on the front support section, and the locking member, the fixed clamping plate and the moving clamping plate are respectively sleeved on the pivot pin Above, the fixed clamping plate is provided with a fixed clamping plate extension inserted into the front branch section, and the movable clamping plate is provided with a movable clamping plate extension inserted into the front tube of the vehicle frame. 10. The trolley according to claim 9, characterized in that, a part of the edge of the locking plate is formed in an arc shape around the rotation axis, and the locking plate is provided with a stopper on the edge of the arc , the movable clamping plate is provided with a clamping block that bends toward the fixed clamping plate and fits with the arc-shaped edge.