Carrier

Abstract

The utility model discloses a carrier. The carrier comprises a bottom frame, a front support, a rear support and a side wall mechanism, the bottom frame has an unfolded state and a folded state, the front support and the rear support are arranged at the two ends of the bottom frame in the first direction respectively, and the side wall mechanism is arranged between the front support and the rear support. The bottom frame can drive the front support and the rear support to be close to each other, and the side wall mechanism can be folded. When the carrier is stored, as long as the bottom frame is driven to be folded, the front support and the rear support can be driven to be close to each other at the same time, and the side wall mechanisms can be folded at the same time, so that the whole carrier is easy to store, high in efficiency, convenient to fold in the storage process and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a carrier technical field especially relates to a carrier. BACKGROUND

[0002] The cart is a kind of carrier that can carry things and people, with the improvement of people's living standards, the use range of cart is more and more widely, for example, it can be used for camping, carrying sick children in hospital etc.The capacity of carrier is an important parameter of carrying things, the larger capacity can accommodate more articles, and also can make sick children lie in the cart, improve comfort.

[0003] The capacity increase leads to the volume increase of cart, and the volume increase leads to the inconvenience of storage of cart.In prior art, although there is also the cart that can be stored by folding, but folding operation is complex, folding is inconvenient, folding efficiency is low, and practicality is poor.

[0004] Therefore, how to provide a kind of carrier that operation is simple, folding is convenient, storage efficiency is high and practicality is strong is the technical problem to be solved urgently at present. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of carrier, the operation of the carrier is simple when storage, folding is convenient, storage efficiency is high and practicality is strong.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A kind of carrier, comprising: undercarriage, the undercarriage has unfolded state and folding state;Front support and rear support, the front support and the rear support are respectively arranged at the two ends of the undercarriage in the first direction;Side wall mechanism, the side wall mechanism is arranged between the front support and the rear support;Wherein, when the undercarriage is converted from the unfolded state to the folding state, the undercarriage can drive the front support and the rear support to each other, and can make the side wall mechanism fold.

[0008] As preferred, the side wall mechanism includes a plurality of surrounding rods extending along the first direction, and a plurality of surrounding rods are arranged along the first direction.

[0009] As preferred, the side wall mechanism is provided with two, two side wall mechanisms are arranged at the two ends of the undercarriage in the second direction, and the second direction is perpendicular to the first direction;And / or, the side wall mechanism includes at least one middle frame and at least two folding structures, one folding structure is arranged on the two sides of each middle frame in the first direction, and the width of the folding structure in the first direction is adjustable.

[0010] As preferred, the folding structure comprises a first folding structure, the first folding structure comprises a first surrounding rod extending along the first direction and a first side rod, one end of the first side rod is hinged with one end of the first surrounding rod, the other end of the first side rod is rotationally connected with the lower end of the front support or the middle frame between the front support and the middle frame, and the other end of the first surrounding rod is rotationally connected with the upper end of the middle frame or the front support.

[0011] As preferred, the folding structure further comprises a second folding structure, the second folding structure comprises a second surrounding rod extending along the first direction and a second side rod, the second folding structure is symmetrically arranged with the first folding structure, and the first side rod and the second side rod are hinged in an X shape.

[0012] As preferred, the folding structure further comprises a sliding sleeve and a connecting rod, one end of the connecting rod is rotationally connected with the sliding sleeve, and the other end of the connecting rod is rotationally connected with the first side rod; in two adjacent folding structures, two connecting rods share one sliding sleeve.

[0013] As preferred, the bottom frame comprises at least two groups of folding rod structures arranged in the second direction, each group of folding rod structures comprises two rotationally connected bottom rods, the front end of the bottom rod is rotationally connected with the front support, the rear end of the bottom rod is rotationally connected with the rear support, and the rotationally connected points between two adjacent bottom rods form a pulling point; when the bottom frame is in the unfolded state, the surrounding rods are arranged in parallel with the bottom rods; and the side surrounding mechanism is arranged on the outer side or the inner side of the bottom frame.

[0014] As preferred, the bottom frame further comprises a bottom plate connected with the bottom rod, and the bottom plate avoids the pulling point.

[0015] As preferred, at least one seat is arranged on the bottom frame, and at least one surrounding rod forms an armrest of the seat.

[0016] As preferred, the carrier further comprises an auxiliary supporting wheel, the auxiliary supporting wheel is connected with the middle frame through a mounting frame; the mounting frame is located below the bottom frame, a seat is arranged on the bottom frame, and the mounting frame forms a footrest of the seat.

[0017] The utility model discloses the beneficial effects of:

[0018] The carrier provided by the utility model includes a chassis, a front support, a rear support and a side wall mechanism, the chassis has an unfolded state and a folded state, the front support and the rear support are respectively arranged at both ends of the chassis in the first direction, and the side wall mechanism is arranged between the front support and the rear support; when the chassis is converted from the unfolded state to the folded state, the chassis can drive the front support and the rear support to move close to each other, and the side wall mechanism can be folded. When the carrier is stored, the front support and the rear support can be driven to move close to each other and the side wall mechanism can be folded simultaneously by driving the chassis to fold, the operation of storing the whole carrier is simple, the efficiency is high, the folding is convenient during the storage process, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the schematic view of the carrier provided by the utility model in the unfolded state of carrying objects;

[0020] Figure 2 is the front view of the carrier provided by the utility model in the unfolded state of carrying objects;

[0021] Figure 3 is the schematic view of the carrier provided by the utility model in the half storage state;

[0022] Figure 4 is the front view of the carrier provided by the utility model in the half storage state;

[0023] Figure 5 is the schematic view of the carrier provided by the utility model in the storage state;

[0024] Figure 6 is the front view of the carrier provided by the utility model in the storage state.

[0025] In the drawings:

[0026] 100, chassis; 101, bottom rod; 102, bottom plate;

[0027] 200, front support; 201, front upper rod; 202, first front side rod; 203, front lower rod; 204, second front side rod; 205, first bent rod; 206, second bent rod;

[0028] 300, rear support; 301, rear upper rod; 302, first rear side rod; 303, rear lower rod; 304, second rear side rod; 305, third bent rod; 306, fourth bent rod;

[0029] 400, side wall mechanism; 410, middle frame; 420, folding structure; 401, first surrounding rod; 402, second surrounding rod; 403, first side rod; 404, second side rod; 405, sliding sleeve; 406, connecting rod; 407, first connecting head; 408, second connecting head;

[0030] 501, front roller; 502, rear roller; 503, auxiliary support wheel;

[0031] 600, mounting bracket; 601, U-shaped rod; 602, mounting rod;

[0032] 700, pulling member; 701, pull rod; 702, handle. DETAILED DESCRIPTION

[0033] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0037] The utility model discloses a kind of carriers, the carrier can carry people or carry things, optionally, the carrier is a kind of cart, the cart can be used as camping car, camping needs many kinds of equipment, for example, tent, hammock, barbecue grill etc., when going to camping place, cart can carry the equipment required for camping, to facilitate camper movement and reduce camper labor intensity;And the cart can be used as a child car, for example, when children are sick, sick children can be placed in the cart, so as to push sick children to move between various clinics in hospital, improve the comfort of children, reduce the labor intensity of parents. Of course, in addition to the cart, the carrier can also be a storage frame without moving property or a device with carrying property.

[0038] As Figures 1 to 6 Indicated, carrier includes chassis 100, front support 200, rear support 300 and side wall mechanism 400, chassis 100 has unfolded state and folding state, front support 200 and rear support 300 are respectively arranged at both ends of chassis 100 in first direction, side wall mechanism 400 is arranged between front support 200 and rear support 300, when chassis 100 is converted from unfolded state to folding state, chassis 100 can drive front support 200 and rear support 300 to approach each other, and can make side wall mechanism 400 fold.In an embodiment, first direction is as indicated in a direction of a, it is length direction of carrier. Figure 1

[0039] Chassis 100, front support 200, rear support 300 and side wall mechanism 400 are enclosed to form the top opening carrying space, in the process that chassis 100 is switched from unfolded state to folding state, carrying space gradually reduces until zero.Compared with the efficiency low, operation complex and poor practicability problem that current carrier needs to carry out multiple-step operation when being stored, the carrier provided in the utility model can drive chassis 100 to fold when being stored, by lifting chassis 100, chassis 100 can be switched from unfolded state to folding state, and front support 200 and rear support 300 can be driven to approach each other, and side wall mechanism 400 can be folded simultaneously, so that carrying space is quickly reduced until zero, the carrier can be folded by lifting, so that the process of storing entire carrier is simple in operation, high in efficiency, folding is convenient during storage process, and practicality is strong.

[0040] ​In other words, the carrier has a storage state with a small carrying space, at this time the chassis 100 is in the folded state, the front support 200 and the rear support 300 have a first distance, and the side wall mechanism 400 has a first width in the first direction; and the carrier has an unfolded carrying state with a large carrying space, at this time the chassis 100 is in the unfolded state, the front support 200 and the rear support 300 have a second distance, and the side wall mechanism 400 has a second width in the first direction; wherein the first distance is smaller than the second distance, and the first width is smaller than the second width. The specific values of the first width, the second width, the first distance and the second distance are not limited, and are set according to requirements.

[0041] In some embodiments, the front support 200 includes a front upper rod 201, a first front side rod 202, a front lower rod 203 and a second front side rod 204 connected head to tail. Optionally, a front roller 501 is arranged on the left and right sides of the lower end of the front support 200 respectively. Optionally, a first curved rod 205 can be connected between the front upper rod 201 and the first front side rod 202, and a second curved rod 206 can be connected between the front upper rod 201 and the second front side rod 204. The first curved rod 205 and the second curved rod 206 not only improve the appearance, but also make the corners of the front support 200 smooth, making the user safer to use.

[0042] In some embodiments, the rear support 300 includes a rear upper rod 301, a first rear side rod 302, a rear lower rod 303 and a second rear side rod 304 connected head to tail. Optionally, a rear roller 502 is arranged on the left and right sides of the lower end of the rear support 300 respectively. Optionally, a third curved rod 305 can be connected between the rear upper rod 301 and the first rear side rod 302, and a fourth curved rod 306 can be connected between the rear upper rod 301 and the second rear side rod 304. The third curved rod 305 and the fourth curved rod 306 not only improve the appearance, but also make the corners of the rear support 300 smooth, making the user safer to use.

[0043] The side wall mechanism 400 is arranged on the outside or inside of the chassis 100. According to user requirements, the side wall mechanism 400 can be arranged as one or two. If the side wall mechanism 400 is arranged as one, the carrier not only has a top opening, but also has a side opening, through which the articles can be easily placed into the carrying space, and the user does not have to lift the articles to a position higher than the top opening to place the articles into the carrying space through the top opening, which is more labor-saving. If the side wall mechanism 400 is arranged as two, the two side wall mechanisms 400 are arranged at the two ends of the chassis 100 in the second direction, which is perpendicular to the first direction. By arranging two side wall mechanisms 400, the stability of placing articles in the entire carrying space can be improved, and the articles placed in the carrying space are less likely to fall out of the carrying space. In an embodiment, the second direction is as shown in FIG. 1b, which is the width direction of the carrier. Figure 1 ​

[0044] In order to make the side wall mechanism 400 more flexible to fold and more stable to support, the side wall mechanism 400 comprises at least one middle frame 410 and at least two folding structures 420, each middle frame 410 is provided with one folding structure 420 on each side in the first direction, and the width of the folding structure 420 in the first direction is adjustable. The arrangement of the middle frame 410 makes the side wall mechanism 400 more stable when it is not folded, and the width of the folding structure 420 arranged on both sides of the middle frame 410 changes simultaneously, which makes the folding flexibility of the side wall mechanism 400 stronger.

[0045] It should be noted that the number of middle frames 410 can be one, two or more according to requirements, if the middle frame 410 is provided with two or more, the multiple middle frames 410 are arranged at intervals in the first direction, and the number of folding structures 420 can be two, three or more according to requirements. Since the folding structure 420 is arranged on both sides of the middle frame 410, the number of folding structures 420 is one more than the number of middle frames 410. As shown in FIG. 1, in a specific embodiment, the middle frame 410 is provided with one, and the folding structure 420 is provided with two. Figures 1 to 6

[0046] In some embodiments, the side wall mechanism 400 comprises a plurality of surrounding rods extending in the first direction, and the plurality of surrounding rods are arranged at intervals in the first direction. Optionally, the surrounding rods comprise a first surrounding rod 401 and a second surrounding rod 402, the first surrounding rod 401 and the second surrounding rod 402 are arranged at intervals, and both extend in the first direction. Further optionally, each folding structure 420 comprises a group of first surrounding rods 401 and second surrounding rods 402, so that the first surrounding rods 401 and the second surrounding rods 402 are provided with multiple groups.

[0047] ​In some embodiments, the folding structure 420 comprises a first folding structure comprising the first surrounding rod 401 and the first side rod 403 extending in the first direction. Further, the folding structure 420 further comprises a second folding structure comprising the second surrounding rod 402 and the second side rod 404 extending in the first direction. The first surrounding rod 401 and the second surrounding rod 402 are both located above the chassis 100 and are spaced apart in the first direction. One end of the first side rod 403 is hingedly connected to one end of the first surrounding rod 401, and one end of the second side rod 404 is hingedly connected to one end of the second surrounding rod 402. The second folding structure is symmetrically arranged with the first folding structure, and the first side rod 403 and the second side rod 404 are hingedly connected in an X shape. Between the front support 200 and the middle frame 410, the other end of the first side rod 403 is rotatably connected to the lower end of the front support 200 or the middle frame 410, and the other end of the first surrounding rod 401 is rotatably connected to the upper end of the middle frame 410 or the front support 200. Between the rear support 300 and the middle frame 410, the other end of the first side rod 403 is rotatably connected to the lower end of the rear support 300 or the middle frame 410, and the other end of the first surrounding rod 401 is rotatably connected to the upper end of the middle frame 410 or the rear support 300.

[0048] The folding structure 420 has three installation conditions:

[0049] I. The folding structure 420 is arranged between the front support 200 and the middle frame 410.

[0050] II. The folding structure 420 is arranged between the rear support 300 and the middle frame 410.

[0051] III. The folding structure 420 is arranged between two adjacent middle frames 410.

[0052] In the folding structure 420 connected between the front support 200 and the middle frame 410, the other end of the first side rod 403 and the other end of the second surrounding rod 402 are both rotatably connected to the middle frame 410, and the other end of the second side rod 404 and the other end of the first surrounding rod 401 are both rotatably connected to the front support 200. Specifically, the other end of the second side rod 404 and the other end of the first surrounding rod 401 are both rotatably connected to the first front side rod 202 (the second front side rod 204).

[0053] Continuing to refer to Figure 2As shown, the hinge point of the first surrounding rod 401 and the first front side rod 202 is defined as A, the hinge point of the first surrounding rod 401 and the first side rod 403 is defined as B, the hinge point of the first side rod 403 and the second side rod 404 is defined as C, the hinge point of the second side rod 404 and the first front side rod 202 is defined as D, the hinge point of the first side rod 403 and the middle frame 410 is defined as G, the hinge point of the second side rod 404 and the second surrounding rod 402 is defined as J, and the hinge point of the second surrounding rod 402 and the middle frame 410 is defined as I. In one embodiment, when the carrier is in the unfolded state, the point A is directly above the point D, the point I is directly above the point G, the points A, B, J and I are on the same horizontal line, the points D and G are on the same horizontal line, ABCG and D form a right trapezoid, DCJ and IG form a right trapezoid, and ABCD and IJCG are quadrilateral linkage structures.

[0054] In the folding structure 420 connected between the rear support 300 and the middle frame 410, the other end of the first side rod 403 and the other end of the second surrounding rod 402 are both rotationally connected to the middle frame 410, and the other end of the second side rod 404 and the other end of the first surrounding rod 401 are both rotationally connected to the rear support 300.

[0055] Continuing to refer to Figure 2 As shown, the top end of the middle frame 410 is provided with a first connecting head 407, which is T-shaped and has three connecting ends, one of which is a first insertion end, and the other two are first hinge ends, the ends of the two second surrounding rods 402 are respectively hinged to the two first hinge ends, and the first insertion end is inserted into the top end of the middle frame 410; the bottom end of the middle frame 410 is provided with a second connecting head 408, which is T-shaped and has three connecting ends, one of which is a second insertion end, and the other two are second hinge ends, the ends of the two first side rods 403 are respectively hinged to the two second hinge ends, and the second insertion end is inserted into the bottom end of the middle frame 410.

[0056] If the middle frame 410 is provided with two or more, in the folding structure 420 connected between the adjacent two middle frames 410, the other end of the first side rod 403 and the other end of the second surrounding rod 402 are both rotationally connected to one of the middle frames 410, and the other end of the second side rod 404 and the other end of the first surrounding rod 401 are both rotationally connected to the other middle frame 410.

[0057] In order to improve the stability of the folding structure 420 folding towards the middle frame 410, continuing to refer to Figure 2 As shown, the folding structure 420 further includes a sliding sleeve 405 and a connecting rod 406, the sliding sleeve 405 is slidingly connected to the middle frame 410, one end of the connecting rod 406 is rotationally connected to the sliding sleeve 405, and the other end is rotationally connected to the first side rod 403.

[0058] In order to enable the two folding structures 420 located on the front and back sides of the middle frame 410 to be folded synchronously, and to improve folding synchronization, it is continued to refer to Figure 2 As shown in the figure, among the two adjacent folding structures 420, the two connecting rods 406 share one sliding sleeve 405. Specifically, the sliding sleeve 405 includes two hinged parts, and one end of the two connecting rods 406 is respectively hinged on the two hinged parts.

[0059] The base frame 100 includes at least two groups of folding rod structures arranged in the second direction, and each group of folding rod structures includes two rotationally connected bottom rods 101. The bottom rod 101 located at the front end is rotationally connected with the front support 200, specifically with the first front side rod 202 (the second front side rod 204), and the bottom rod 101 located at the rear end is rotationally connected with the rear support 300, specifically with the first rear side rod 302 (the second rear side rod 304). The rotationally connected point between the two adjacent bottom rods 101 forms a pulling point, that is Figures 3 to 6 H point shown in the figure.

[0060] In some embodiments, when the base frame 100 is in the unfolded state, the surrounding rods are arranged parallel to the bottom rods 101. Specifically, the first surrounding rod 401 and the second surrounding rod 402 are arranged parallel to the bottom rods 101.

[0061] It is continued to refer to Figure 3 As shown in the figure, the base frame 100 further includes a bottom plate 102 connected to the bottom rod 101, and the bottom plate 102 avoids the pulling point. Optionally, the bottom plate 102 is provided with two plates, one of which is connected to the bottom rod 101 connected with the front support 200, and the other is connected to the bottom rod 101 connected with the rear support 300.

[0062] It is continued to refer to Figure 1 As shown in the figure, the carrier further includes an auxiliary support wheel 503 connected to the middle frame 410 through a mounting bracket 600. Optionally, the mounting bracket 600 includes a U-shaped rod 601 and two mounting rods 602 protruding at the bottom of the U-shaped rod 601, and the auxiliary support wheel 503 is rotationally connected between the two mounting rods 602.

[0063] It is continued to refer to Figure 1 and Figure 3 As shown in the figures, the carrier further includes a pulling member 700, and the pulling member 700 includes a pulling rod 701. The bottom end of the pulling rod 701 is connected to the bottom of the front support 200, and the top end of the pulling rod 701 is provided with a handle 702 convenient for a user to hold. Optionally, the pulling rod 701 has telescopic property.

[0064] Optionally, at least one seat is arranged on the base frame 100, and the at least one surrounding rod forms an armrest of the seat. Optionally, the mounting bracket 600 is located below the base frame 100, and the base frame 100 is provided with a seat, and the mounting bracket 600 forms a footrest of the seat.

[0065] The folding principle of the carrier is as follows: a user exerts force on the H point of the chassis 100 to pull the H point of the chassis 100 upward, the two bottom bars 101 of the chassis 100 change from coaxial connection to angular connection, at this time the front support 200 and the rear support 300 are simultaneously pulled inward by the chassis 100, simultaneously driving the quadrilateral ABCD linkage quadrilateral IJCG on the corresponding side wall mechanism 400 and the rocker slider mechanism EFG to complete folding, the left and right structures are symmetrical after folding, and the carrier can stand by itself after folding. The carrier can simplify the folding operation steps, quickly complete folding, and stand by itself after folding through several simple mechanical principles. The foldable carrier is simple to operate, convenient to fold, and has high practicability.

[0066] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle, characterized in that, include: The base frame (100) has an unfolded state and a folded state; A front bracket (200) and a rear bracket (300) are respectively disposed at both ends of the base frame (100) in a first direction; A side enclosure mechanism (400) is disposed between the front support (200) and the rear support (300); When the base frame (100) changes from the unfolded state to the folded state, the base frame (100) can drive the front support (200) and the rear support (300) to move closer to each other, and can also cause the side panel mechanism (400) to fold. The side frame mechanism (400) includes at least one middle frame (410) and at least two folding structures (420), each middle frame (410) having a folding structure (420) on each side in the first direction, and the width of the folding structure (420) in the first direction is adjustable.

2. The vehicle according to claim 1, characterized in that, The side enclosure mechanism (400) includes a plurality of enclosure rods extending along the first direction, and the plurality of enclosure rods are spaced apart along the first direction.

3. The vehicle according to claim 1, characterized in that, Two side enclosure mechanisms (400) are provided, and the two side enclosure mechanisms (400) are located at both ends of the base frame (100) in a second direction, which is perpendicular to the first direction.

4. The vehicle according to claim 1, characterized in that, The folding structure (420) includes a first folding structure, which includes a first retaining rod (401) and a first side rod (403) extending along the first direction. One end of the first side rod (403) is hinged to one end of the first retaining rod (401) between the front support (200) and the middle frame (410). The other end of the first side rod (403) is rotatably connected to the lower end of the front support (200) or the middle frame (410). The other end of the first retaining rod (401) is rotatably connected to the upper end of the middle frame (410) or the front support (200). Between the rear support (300) and the middle frame (410), the other end of the first side rod (403) is rotatably connected to the lower end of the rear support (300) or the middle frame (410). The other end of the first retaining rod (401) is rotatably connected to the upper end of the middle frame (410) or the rear support (300).

5. The vehicle according to claim 4, characterized in that, The folding structure (420) further includes a second folding structure, which includes a second retaining rod (402) and a second side rod (404) extending along the first direction. The second folding structure is symmetrically arranged with the first folding structure, and the first side rod (403) and the second side rod (404) are hinged into an X shape.

6. The vehicle according to claim 5, characterized in that, The folding structure (420) further includes a sliding sleeve (405) and a connecting rod (406). The sliding sleeve (405) is slidably connected to the middle frame (410). One end of the connecting rod (406) is rotatably connected to the sliding sleeve (405), and the other end is rotatably connected to the first side rod (403). In two adjacent folding structures (420), the two connecting rods (406) share one sliding sleeve (405).

7. The vehicle according to claim 2, characterized in that, The base frame (100) includes at least two sets of folding rod structures spaced apart in the second direction. Each set of folding rod structures includes two rotatably connected bottom rods (101). The bottom rod (101) at the front end is rotatably connected to the front support (200), and the bottom rod (101) at the rear end is rotatably connected to the rear support (300). The rotatable connection point between two adjacent bottom rods (101) forms a lifting point. When the base frame (100) is in the unfolded state, all the surrounding rods are arranged parallel to the base rod (101); The side enclosure mechanism (400) is located on the outside or inside of the base frame (100).

8. The vehicle according to claim 7, characterized in that, The base frame (100) also includes a base plate (102) connected to the base rod (101), the base plate (102) avoiding the lifting point.

9. The vehicle according to claim 2, characterized in that, At least one seat is provided on the base frame (100), and at least one of the railings forms the armrest of the seat.

10. The vehicle according to claim 1, characterized in that, The vehicle also includes auxiliary support wheels (503), which are connected to the middle frame (410) via mounting brackets (600); The mounting bracket (600) is located below the base frame (100), on which a seat is provided, and the mounting bracket (600) forms the footrest of the seat.

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