Carrier

Abstract

The utility model discloses a carrier which comprises a seat frame, an upper support and a lower support, the upper support can be arranged in a telescopic mode in the length direction of the upper support, and the lower portion of the upper support is movably connected to the seat frame. The lower support comprises a first support body and a second support body, the upper portions of the first support body and the second support body are movably connected to the seat frame, when the carrier is converted from the unfolded state to the folded state, the upper support body is shortened and folded to the seat frame, and the upper portion of the first support body and the upper portion of the second support body draw close to each other. The first bracket and the second bracket are respectively folded to the seat frame; in the folded state, at least one of the first support and the second support is flush with the two ends of the upper support, so that the carrier in the folded state can be of a square and neat structure, carrying and storage of the carrier in the folded state are facilitated, the carrier can be placed in a narrow space, and the carrier is convenient to carry and store. And convenience is brought to daily use of the user.

Description

Technical Field

[0001] This utility model relates to the field of transportation vehicles, specifically to a vehicle. Background Technology

[0002] To facilitate portability and reduce space occupation when not in use, vehicles such as strollers are usually designed with a foldable structure. However, currently, the structures, folding principles, and folding methods of vehicles such as strollers vary, and their folded forms also differ. However, most still have problems such as the folded structure not being flat or compact enough, affecting daily carrying and storage. In particular, they are usually quite thick when folded, making it impossible to bring them into the car or requiring a lot of passenger space. Utility Model Content

[0003] The purpose of this invention is to provide a vehicle to solve one or more problems of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a carrier, the carrier including a seat frame, an upper support and a lower support, the upper support being extendable and retractable along its own length direction, the lower part of the upper support being movably connected to the seat frame; the lower support including a first support and a second support whose upper parts are respectively movably connected to the seat frame; when the carrier is converted from an unfolded state to a folded state, the upper support shortens its length and retracts to the seat frame, the upper parts of the first support and the upper parts of the second support approach each other, and the first support and the second support respectively retract to the seat frame; in the folded state, at least one of the first support and the second support is flush with both ends of the upper support.

[0005] In some embodiments, in the folded state, the two ends of the upper support are flush with the two ends of the seat frame.

[0006] In some embodiments, in the unfolded state, the upper part of the first support and the upper part of the second support are located at different ends of the seat frame;

[0007] When the vehicle is converted from an unfolded state to a folded state, at least one of the upper part of the first support and the upper part of the second support moves along the seat frame.

[0008] In the folded state, the upper part of the first bracket and the upper part of the second bracket are located at one end of the seat frame, and the upper part of the first bracket and the lower part of the second bracket are located at the other end of the seat frame.

[0009] In some embodiments, the lower part of the upper support is rotatably connected to the seat frame, and the upper part of the first support is rotatable relative to the seat frame and slidably connected to the seat frame along the length extension direction of the seat frame. The carrier further includes a first linkage component disposed between the upper support and the first support, so that when the upper support rotates and retracts relative to the seat frame, the first linkage component drives the first support to rotate and slide relative to the seat frame, thereby causing the first support and the seat frame to retract relative to each other.

[0010] In some embodiments, the seat frame has a first end and a second end located at opposite ends along its length. In the unfolded state, the upper part of the first support is connected to the first end. The first linkage assembly includes a first link and a second link. The first link is rotatably connected to the first end, one end of the first link is rotatably connected to the first support, and the other end of the first link is rotatably connected to one end of the second link. The other end of the second link is rotatably connected to the upper support.

[0011] During the process of the upper support rotating and retracting relative to the seat frame, the first connecting rod rotates relative to the seat frame and drives the first support to slide toward the second end.

[0012] In some embodiments, a first slider is rotatably connected to the upper part of the first bracket, and the first slider is slidably disposed on the seat frame along the length extension direction of the seat frame;

[0013] And / or, when the vehicle is in the deployed state, the second link is located above the seat frame;

[0014] And / or, when the vehicle is in the unfolded state, the first link has a first extension and a second extension connected along its length, the position where the first extension and the second extension meet is rotatably connected to the seat frame, at least a portion of the first extension extends above the seat frame, and at least a portion of the second extension extends below the seat frame. During the transition of the vehicle from the unfolded state to the folded state, the first extension swings relative to the seat frame away from the second end, and the second extension swings relative to the seat frame toward the second end, such that the first link, the second link, and the first bracket are respectively retracted relative to the seat frame.

[0015] In some embodiments, the upper part of the second bracket is rotatably connected to one end of the seat frame. During the process of the vehicle changing from an unfolded state to a folded state, the upper part of the first bracket moves closer to the upper part of the second bracket, and the second bracket rotates and retracts relative to the seat frame.

[0016] In some embodiments, the thickness of the vehicle in its folded state is defined by the upper support and the second support approaching each other. In the folded state, the seat frame and the first support do not protrude beyond the upper support and the second support in the thickness direction of the vehicle.

[0017] In some embodiments, the lower part of the upper support is rotatably connected to the seat frame, and the carrier further includes a second linkage component disposed between the upper support and the second support, so that when the upper support rotates and retracts relative to the seat frame, the second linkage component drives the second support to rotate and retract relative to the seat frame.

[0018] In some embodiments, the second linkage component includes a third link, a fourth link, and a second slider. The second slider is slidably disposed on the seat frame along the length extension direction of the seat frame. The third link is rotatably connected between the second slider and the upper support. The fourth link is rotatably connected between the second slider and the second support. During the process of the vehicle changing from an unfolded state to a folded state, the sliding direction of the second slider is opposite to the sliding direction of the upper part of the first support along the seat frame.

[0019] In some embodiments, the vehicle further includes a first wheel assembly disposed at the bottom of the first support, the first wheel assembly being detachably connected to the first support, wherein in the unfolded state, the seat frame has a bearing surface that is generally facing upwards, and in the folded state, the first wheel assembly can be disassembled and placed on the side of the seat frame away from the bearing surface;

[0020] The seat frame has a receiving space for accommodating the first wheel assembly on the side opposite to the bearing surface, and the first wheel assembly is housed in the receiving space after disassembly.

[0021] In some embodiments, the accommodating space is provided with a mounting portion that engages with the first wheel assembly;

[0022] The mounting part includes a groove disposed on the seat frame, the shape of which is adapted to the shape of the first wheel assembly.

[0023] In some embodiments, the seat frame includes a seat plate and a surrounding plate disposed on the seat plate, with the accommodating space formed between the seat plate and the surrounding plate, and after the first wheel assembly is installed in conjunction with the mounting part, the first wheel assembly does not protrude outward from the accommodating space.

[0024] In some embodiments, the carrier further includes a second wheel assembly disposed at the bottom of the second support, the second wheel assembly being detachably connected to the second support, and in the folded state, the second wheel assembly being housed in the accommodating space after disassembly.

[0025] In some embodiments, the upper support has two upper support rods disposed on opposite sides in the left-right direction, and an upper crossbar connected between the upper parts of the two upper support rods.

[0026] In the folded state, the seat frame is folded into the space formed by the upper crossbar and the two upper support rods, and the seat frame and the upper support rods overlap at least partially in the thickness direction;

[0027] And / or, the vehicle further includes a backrest, which is disposed between the two upper support rods, and both sides of the backrest are connected to the upper support rods by connectors;

[0028] And / or, the seat frame includes two seat poles located on the left and right sides and extending in the front-back direction, and a support body fixed between the two seat poles. The first support has two first support rods located on the left and right sides. The first support rods are movably connected to the seat poles on the same side. When the vehicle is in a folded state, the first support rods and the seat poles are retracted together. The first support rods on both sides are located between the seat poles on both sides, and the first support rods are at least partially or completely covered by the seat poles.

[0029] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: When the vehicle of this utility model is folded, the upper part of the first support and the upper part of the second support are close to each other on the seat frame, and the seat frame, the first support, and the second support are respectively folded into the seat frame, so that the rods on the vehicle can be tightly folded and have a thinner thickness. At the same time, in the folded state, at least one of the first support and the second support is flush with both ends of the upper support, so that the vehicle in the folded state can present a more square and neat structure, which is conducive to the carrying and storage of the vehicle in the folded state, as well as placement in a relatively narrow space, bringing convenience to the user's daily use. Attached Figure Description

[0030] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is a three-dimensional structural diagram of the vehicle in the unfolded state according to a specific embodiment of the present invention.

[0032] Figure 2 for Figure 1 A side view of the vehicle's structure;

[0033] Figure 3 for Figure 1 A three-dimensional structural diagram of the vehicle during the folding process;

[0034] Figure 4 for Figure 3 A side view of the vehicle's structure;

[0035] Figure 5 for Figure 4 Enlarged structural diagram of the middle component;

[0036] Figure 6 for Figure 1 A three-dimensional structural diagram of the vehicle in its folded state;

[0037] Figure 7 for Figure 6 A side view of the vehicle's structure;

[0038] Figure 8 In order to be in Figure 6 Based on this, a structural diagram showing the first and second wheel components being removed and stored in the seat frame;

[0039] Figure 9 for Figure 8 A side view of the vehicle's structure;

[0040] In the attached diagrams above:

[0041] 1. Seat frame; 11. Seat post; 111. Slide groove; 12. Support body; 13. Bearing surface;

[0042] 2. Upper bracket; 21. Upper support rod; 211. Telescopic sleeve; 22. Upper crossbar;

[0043] 3. First bracket; 31. First support rod; 32. First crossbar; 33. First sliding member;

[0044] 4. Second support; 41. Second strut; 42. Second crossbar;

[0045] 5. First connecting rod; 51. First extension segment; 52. Second extension segment;

[0046] 6. Second link;

[0047] 7. Third link; 8. Fourth link; 9. Second slider; 10. First wheel assembly; 20. Second wheel assembly. Detailed Implementation

[0048] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] In this article, the terms "up," "down," "left," "right," "front," and "back" indicate the direction or positional relationship. Figure 1 The orientation shown in the unfolded state, as observed by a passenger sitting on the seat frame 1 with their back to the support 2, is defined for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] Figures 1 to 9 The diagrams are drawn to scale. To keep the instructions concise, the proportions of each component are not listed individually. However, the proportions and positions of each component should be considered part of the contents of this instruction manual.

[0051] See Figures 1 to 9 The vehicle shown has an unfolded state and a folded state. The vehicle includes a seat frame 1, an upper support 2, and a lower support. The lower support includes a first support 3 and a second support 4. When the vehicle is unfolded, the seat frame 1 extends horizontally in the front-to-back direction, and the upper support 2 extends obliquely in the vertical direction, specifically gradually obliquely extending backward from bottom to top. The first support 3 and the second support 4 extend obliquely in the vertical direction, and the two oblique directions are opposite, so as to form a stable support under the seat frame 1.

[0052] In this vehicle, the upper support 2 is telescopically extendable along its length, and its lower part is movably connected to the seat frame 1. The upper parts of the first support 3 and the second support 4 are movably connected to the seat frame 1, respectively. When the vehicle transitions from an unfolded state to a folded state, the upper support 2 shortens its length and retracts to the seat frame 1, while the upper parts of the first support 3 and the second support 4 come close to each other on the seat frame 1, and both the first support 3 and the second support 4 retract to the seat frame 1. In the folded state, at least one of the first support 3 and the second support 4 is flush with both ends of the upper support 2, resulting in a flat, square, and regular shape for the vehicle in the folded state.

[0053] Specifically, in the unfolded state, the upper part of the first support 3 and the upper part of the second support 4 are located at different ends of the seat frame 1, providing support for the seat frame 1 in the front-rear direction; when the vehicle is converted from the unfolded state to the folded state, at least one of the upper parts of the first support 3 and the upper parts of the second support 4 moves along the seat frame 1; in the folded state, the upper parts of the first support 3 and the upper parts of the second support 4 are located at one end of the seat frame 1, while the lower parts of the first support 3 and the lower parts of the second support 4 are located at the other end of the seat frame 1, achieving a tight folding with the seat frame 1.

[0054] Specifically, in this embodiment, the lower part of the upper support 2 is rotatably connected to the seat frame 1. When it rotates toward the seat frame 1, it retracts with the seat frame 1. When the vehicle is in a folded state, the upper support 2 is shortened, and its two ends are flush with the two ends of the seat frame 1.

[0055] The first support 3 can rotate relative to the seat frame 1 and can slide along the length extension direction of the seat frame 1 to connect with the seat frame 1. When the vehicle is converted from an unfolded state to a folded state, the first support 3 slides along the seat frame 1 and rotates relative to the seat frame 1 to retract with the seat frame 1. This allows the first support 3 and the seat frame 1 to overlap in the thickness direction after retracting with each other, which is beneficial to make the thickness of the folded vehicle smaller and the structure flatter.

[0056] Specifically, the seat frame 1 has a first end and a second end located at opposite ends along its length. In this embodiment, the first end corresponds to the front end of the seat frame 1, and the second end corresponds to the rear end of the seat frame 1. The lower part of the upper support 2 is rotatably connected to the second end. When the vehicle is in the unfolded state, the upper part of the first support 3 is connected to the first end; when the vehicle is in the folded state, the upper part of the first support 3 slides to the second end, and the lower part of the first support 3 and the first end move closer together. In other embodiments, the vehicle can also be configured such that when the vehicle is in the unfolded state, the upper part of the first support 3 is connected to the second end, and when the vehicle is folded, the upper part of the first support 3 slides to the first end, and the lower part of the first support 3 and the second end retract together.

[0057] In this embodiment, the vehicle further includes a first linkage assembly disposed between the upper support 2 and the first support 3. When the upper support 2 rotates and retracts relative to the seat frame 1, the first linkage assembly drives the first support 3 to rotate and slide relative to the seat frame 1, causing the first support 3 and the seat frame 1 to retract towards each other. Specifically, the first linkage assembly includes a first connecting rod 5 and a second connecting rod 6. The first connecting rod 5 is rotatably connected to a first end, one end of which is rotatably connected to the first support 3. The other end of the first connecting rod 5 is rotatably connected to one end of the second connecting rod 6, and the other end of the second connecting rod 6 is rotatably connected to the upper support 2. During the rotation and retraction of the upper support 2 relative to the seat frame 1, the first connecting rod 5 rotates relative to the seat frame 1 and drives the first support 3 to slide from the first end toward the second end.

[0058] Specifically, a first sliding member 33 is rotatably connected to the upper part of the first support 3, and the first sliding member 33 is slidably disposed on the seat frame 1 along the length extension direction of the seat frame 1. When the vehicle is in the unfolded state, the second link 6 is located above the seat frame 1 to form an armrest above the seat frame 1, providing a handhold for the passenger when sitting on the seat frame 1. When the vehicle is folded, the first sliding member 33 slides backward along the seat frame 1 with the upper part of the first support 3, while the lower part of the first support 3 abuts against the first end of the seat frame 1.

[0059] In the unfolded state, the first link 5 has a first extension 51 and a second extension 52 connected along its length. The point where the first extension 51 and the second extension 52 meet is rotatably connected to the seat frame 1. At least a portion of the first extension 51 extends above the seat frame 1, and at least a portion of the second extension 52 extends below the seat frame 1. A second link 6 connects the upper end of the first extension 51 to the upper support 2, allowing at least the front portion of the second link 6 to extend vertically above the seat frame 1 in the unfolded state, forming an armrest for gripping. During the transition from the unfolded state to the folded state, the first extension 51 swings relative to the seat frame 1 away from the second end, and the second extension 52 swings relative to the seat frame 1 toward the second end, causing the first link 5, the second link 6, and the first support 3 to retract relative to the seat frame 1.

[0060] In this embodiment, the upper part of the second support 4 is rotatably connected to the seat frame 1. During the transition from the unfolded state to the folded state, the second support 4 rotates and retracts relative to the seat frame 1. Here, the upper part of the second support 4 is rotatably connected to the second end of the seat frame 1. When the vehicle is folded, the second support 4 rotates relative to the seat frame 1, and the lower part of the second support 4 moves towards the first end of the seat frame 1.

[0061] The vehicle also includes a second linkage assembly disposed between the upper support 2 and the second support 4, so that when the upper support 2 rotates and retracts relative to the seat frame 1, the second linkage assembly drives the second support 4 to rotate and retract relative to the seat frame 1. Specifically, the second linkage assembly includes a third link 7, a fourth link 8, and a second sliding member 9. The second sliding member 9 is slidably disposed on the seat frame 1 along the length extension direction of the seat frame 1. The third link 7 is rotatably connected between the second sliding member 9 and the upper support 2, and the fourth link 8 is rotatably connected between the second sliding member 9 and the second support 4. During the conversion of the vehicle from an unfolded state to a folded state, the sliding direction of the second sliding member 9 is opposite to the sliding direction of the upper part of the first support 3 along the length extension direction of the seat frame 1. The upper support 2 can also be extended and retracted along its own length direction. When the vehicle is folded, the upper support 2 rotates relative to the seat frame 1, and the upper part of the upper support 2 retracts towards the first end of the seat frame 1.

[0062] In the folded state of this embodiment, the second support 4 and the upper support 2 rotate and retract with the seat frame 1 respectively. The two ends of the second support 4 are flush with the two ends of the upper support 2. The thickness of the vehicle in the folded state is limited by the upper support 2 and the second support 4 coming together. In this folded state, neither the seat frame 1 nor the first support 3 protrudes beyond the upper support 2 and the second support 4 in the thickness direction of the vehicle, making the thickness of the folded vehicle very thin.

[0063] In the vehicle of this embodiment, the structures of each part are specifically arranged as follows:

[0064] See Figures 1 to 7 As shown, the upper support 2 includes two upper support rods 21 located on opposite sides in the left and right directions, and an upper crossbar 22 connected between the upper parts of the two upper support rods 21. The upper support rods 21 are telescopically extendable along their length and have multiple telescopic sleeves 211 that are sequentially slidably nested together. When fully shortened along the length direction, their overall length is very short. The lower end of the lowest telescopic sleeve 211 is rotatably connected to the second end of the seat frame 1 around the axis A. When the vehicle is in a folded state, the seat frame 1 can be folded into the space formed by the upper crossbar 22 and the two upper support rods 21, and the seat frame 1 and the upper support rods 21 overlap at least partially in the thickness direction, which minimizes the thickness of the vehicle in the folded state.

[0065] The vehicle also includes a backrest (not shown in the figure), which is disposed between two upper support rods 21, and the two sides of the backrest are connected to the upper support rods 21 by connectors (not shown in the figure). Specifically, the backrest can be made of a flexible cloth cover with a rigid support plate embedded in the middle, which provides back support for the passenger sitting on the seat frame 1.

[0066] The seat frame 1 includes two seat posts 11 located on the left and right sides and extending in the front-to-back direction, and a support body 12 fixed between the two seat posts 11. The first bracket 3 has two first support rods 31 located on the left and right sides and extending in the up-down direction, and a first crossbar 32 fixed between the lower parts of the two first support rods 31. The upper part of each first support rod 31 is rotatably connected to a first sliding member 33, which is slidably connected to the seat post 11 on the same side. When the vehicle is in the folded state, the first sliding member 33 slides from the front of the seat post 11 to the rear, so that the first support rods 31 and the seat posts 11 are retracted together. The first support rods 31 on both sides are located between the seat posts 11 on both sides, and the first support rods 31 are at least partially or completely covered by the seat posts 11, so that the thickness of the vehicle in the folded state is minimized as much as possible.

[0067] Both the first link 5 and the second link 6 have two sets located on the left and right sides respectively. The seat frame 1 is located between the two sets of the first link 5 and the second link 6 in the left and right direction. When the vehicle is converted to the folding state, the first link 5 and the second link 6 are folded up on the side of the seat frame 1.

[0068] Specifically, the middle part of the first link 5 is rotatably connected to the seat rod 11 around the axis C. The axis C defines the first extension 51 and the second extension 52 of the first link 5. When the vehicle is in the unfolded state, the axis C is located in front of the first sliding member 33. The lower end of the first link 5 is rotatably connected to the first support rod 31 around the axis E. The upper end of the first link 5 is rotatably connected to the front end of the second link 6 around the axis D. The rear end of the second link 6 is rotatably connected to the upper support rod 21 around the axis B. The axis B is higher than the axis A on the upper support rod 21.

[0069] The second support 4 includes two second support rods 41 located on the left and right sides and extending vertically, and a second crossbar 42 fixed between the lower parts of the two second support rods 41. The upper parts of the second support rods 41, the lower parts of the upper support rod 21, and the second end of the seat frame 1 are rotatably connected around the axis A. When the vehicle is in the folded state, the second support 4 is close to the seat frame 1 and the upper support 2. Specifically, the second linkage assembly has two sets located on the left and right sides. On each side of the carrier, the seat rod 11 has a groove 111 extending along the length direction. The second sliding member 9 is specifically a sliding pin that slides through the groove 111. One end of the third link 7 and one end of the fourth link 8 are rotatably connected to the sliding pin around the axis of the sliding pin. The axis of the sliding pin I is always located in front of the axis of the axis A in the length extension direction of the seat rod 11. The other end of the third link 7 is rotatably connected to the upper support rod 21 around the axis of the axis G, and it is higher than the axis of the axis A on the upper support rod 21. The other end of the fourth link 8 is rotatably connected to the second support rod 41 around the axis of the axis H, and it is lower than the axis of the axis A on the second support rod 41.

[0070] The carrier in this embodiment is specifically a trolley. The carrier also includes a first wheel assembly 10 disposed at the bottom of the first support 3 and a second wheel assembly 20 disposed at the bottom of the second support 4. The first wheel assembly 10 is detachably connected to the first support 3. When the carrier is in the unfolded state, the seat frame 1 has a bearing surface 13 that is arranged facing upwards. When the carrier is in the folded state, the first wheel assembly 10 can be placed on the side of the seat frame 1 away from the bearing surface 13 after being disassembled. The side of the seat frame 1 away from the bearing surface 13 is provided with a receiving space for accommodating the first wheel assembly 10. The first wheel assembly 10 is housed in the receiving space after being disassembled.

[0071] The aforementioned accommodating space is also provided with a mounting part (not shown in the figure) that engages with the first wheel assembly 10. The mounting part includes a groove provided on the seat frame 1. The shape of the groove is adapted to the shape of the first wheel assembly 10, so that the first wheel assembly 10 can be accommodated in the groove and fixed relative to the seat frame 1.

[0072] The seat frame 1 includes a seat plate and a surrounding plate disposed on the seat plate. The seat plate and the surrounding plate form the aforementioned accommodating space. After the first wheel assembly 10 is installed in conjunction with the mounting part, the first wheel assembly 10 does not protrude outward from the accommodating space. In a specific configuration, the support body 12 may simultaneously have the aforementioned seat plate and surrounding plate, i.e., the accommodating space is formed on the support body 12; alternatively, the seat rods 11 on both sides may serve as the surrounding plates on the left and right sides, and the support body 12 may include the seat plate and the surrounding plates on the front and rear sides.

[0073] In this embodiment, the second wheel assembly 20 and the second bracket 4 are also detachably connected. In the folded state, the second wheel assembly 20 is also housed in the above-mentioned accommodating space after disassembly. Correspondingly, the above-mentioned accommodating space is also provided with a mounting part for engaging with the second wheel assembly 20, so as to provide the second wheel assembly 20 to be placed accordingly and fixed relative to the seat frame 1.

[0074] With the vehicle in its folded state, the first wheel assembly 10 and the second wheel assembly 20 are disassembled and then completely stored in the accommodating space, resulting in the overall structure of the folded vehicle as follows: Figure 8 , Figure 9 As shown, in the folded state, the upper support 2, the first support 3, and the second support 4 are folded together with the seat frame 1. The upper part of the upper support 2 is approximately flush with the first end of the seat frame 1, the lower part of the first support 3 is approximately flush with the first end of the seat frame 1, and the lower part of the second support 4 is also approximately flush with the first end of the seat frame 1. The structure is very flat and compact. The entire vehicle has a cuboid structure and a very thin thickness, which allows it to be placed in a relatively narrow space, making it convenient for users to carry and store on a daily basis.

[0075] Of course, in other embodiments, the vehicle may be a folding chair without the first wheel assembly 10 and the second wheel assembly 20, or a wheelchair with the first wheel assembly 10 and the second wheel assembly 20, but with a shorter upper support 2.

[0076] It should be noted that "rotational connection" in the above embodiments refers to pivot connection, unless the context clearly indicates other rotational connection methods.

[0077] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0078] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0079] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A vehicle, characterized in that: The vehicle includes a seat frame, an upper support, and a lower support. The upper support is telescopically extendable along its length, and its lower part is movably connected to the seat frame. The lower support includes a first support and a second support, the upper parts of which are movably connected to the seat frame, respectively. When the vehicle is converted from an unfolded state to a folded state, the upper support shortens its length and retracts into the seat frame, the upper parts of the first support and the upper parts of the second support approach each other, and the first support and the second support retract into the seat frame respectively. In the folded state, at least one of the first bracket and the second bracket is flush with both ends of the upper bracket.

2. The vehicle according to claim 1, characterized in that: In the folded state, the two ends of the upper support are flush with the two ends of the seat frame.

3. The vehicle according to claim 2, characterized in that: In the unfolded state, the upper part of the first support and the upper part of the second support are located at different ends of the seat frame; When the vehicle is converted from an unfolded state to a folded state, at least one of the upper part of the first support and the upper part of the second support moves along the seat frame. In the folded state, the upper part of the first bracket and the upper part of the second bracket are located at one end of the seat frame, and the upper part of the first bracket and the lower part of the second bracket are located at the other end of the seat frame.

4. The vehicle according to claim 3, characterized in that: The lower part of the upper support is rotatably connected to the seat frame, and the upper part of the first support is rotatable relative to the seat frame and slidably connected to the seat frame along the length extension direction of the seat frame. The carrier also includes a first linkage component disposed between the upper support and the first support, so that when the upper support rotates and retracts relative to the seat frame, the first linkage component drives the first support to rotate and slide relative to the seat frame, thereby causing the first support and the seat frame to retract relative to each other.

5. The vehicle according to claim 4, characterized in that: The seat frame has a first end and a second end located at opposite ends along its length. In the unfolded state, the upper part of the first support is connected to the first end. The first linkage assembly includes a first link and a second link. The first link is rotatably connected to the first end, one end of the first link is rotatably connected to the first support, and the other end of the first link is rotatably connected to one end of the second link. The other end of the second link is rotatably connected to the upper support. During the process of the upper support rotating and retracting relative to the seat frame, the first connecting rod rotates relative to the seat frame and drives the first support to slide toward the second end.

6. The vehicle according to claim 5, characterized in that: The upper part of the first bracket is rotatably connected to a first sliding member, which is slidably disposed on the seat frame along the length extension direction of the seat frame; And / or, when the vehicle is in the deployed state, the second link is located above the seat frame; And / or, when the vehicle is in the unfolded state, the first link has a first extension and a second extension connected along its length, the position where the first extension and the second extension meet is rotatably connected to the seat frame, at least a portion of the first extension extends above the seat frame, and at least a portion of the second extension extends below the seat frame. During the transition of the vehicle from the unfolded state to the folded state, the first extension swings relative to the seat frame away from the second end, and the second extension swings relative to the seat frame toward the second end, such that the first link, the second link, and the first bracket are respectively retracted relative to the seat frame.

7. The vehicle according to claim 3, characterized in that: The upper part of the second bracket is rotatably connected to one end of the seat frame. During the process of the vehicle changing from an unfolded state to a folded state, the upper part of the first bracket moves closer to the upper part of the second bracket, and the second bracket rotates and retracts relative to the seat frame.

8. The vehicle according to claim 7, characterized in that: The thickness of the vehicle in its folded state is defined by the upper support and the second support coming together. In the folded state, the seat frame and the first support do not protrude beyond the upper support and the second support in the thickness direction of the vehicle.

9. The vehicle according to claim 7, characterized in that: The lower part of the upper support is rotatably connected to the seat frame. The carrier also includes a second linkage component disposed between the upper support and the second support, so that when the upper support rotates and retracts relative to the seat frame, the second linkage component drives the second support to rotate and retract relative to the seat frame.

10. The vehicle according to claim 9, characterized in that: The second linkage component includes a third link, a fourth link, and a second slider. The second slider is slidably mounted on the seat frame along the length extension direction of the seat frame. The third link rotatably connects the second slider to the upper support, and the fourth link rotatably connects the second slider to the second support. During the process of the vehicle changing from an unfolded state to a folded state, the sliding direction of the second slider is opposite to the sliding direction of the upper part of the first support along the seat frame.

11. The vehicle according to any one of claims 1 to 10, characterized in that: The vehicle also includes a first wheel assembly disposed at the bottom of the first support. The first wheel assembly is detachably connected to the first support. In the unfolded state, the seat frame has a bearing surface that faces upwards. In the folded state, the first wheel assembly can be disassembled and placed on the side of the seat frame away from the bearing surface. The seat frame has a receiving space for accommodating the first wheel assembly on the side opposite to the bearing surface, and the first wheel assembly is housed in the receiving space after disassembly.

12. The vehicle according to claim 11, characterized in that: The accommodating space is provided with a mounting part that engages with the first wheel assembly; The mounting part includes a groove disposed on the seat frame, the shape of which is adapted to the shape of the first wheel assembly.

13. The vehicle according to claim 12, characterized in that: The seat frame includes a seat plate and a surrounding plate disposed on the seat plate, and the accommodating space is formed between the seat plate and the surrounding plate. After the first wheel assembly is installed in conjunction with the mounting part, the first wheel assembly does not protrude outward from the accommodating space.

14. The vehicle according to claim 11, characterized in that: The carrier also includes a second wheel assembly located at the bottom of the second support. The second wheel assembly is detachably connected to the second support. In the folded state, the second wheel assembly is housed in the accommodating space after being disassembled.

15. The vehicle according to any one of claims 1 to 10, characterized in that: The upper support has two upper support rods located on opposite sides in the left and right directions, and an upper crossbar connecting the upper parts of the two upper support rods. In the folded state, the seat frame is folded into the space formed by the upper crossbar and the two upper support rods, and the seat frame and the upper support rods overlap at least partially in the thickness direction; And / or, the vehicle further includes a backrest, which is disposed between the two upper support rods, and both sides of the backrest are connected to the upper support rods by connectors; And / or, the seat frame includes two seat poles located on the left and right sides and extending in the front-back direction, and a support body fixed between the two seat poles. The first support has two first support rods located on the left and right sides. The first support rods are movably connected to the seat poles on the same side. When the vehicle is in a folded state, the first support rods and the seat poles are retracted together. The first support rods on both sides are located between the seat poles on both sides, and the first support rods are at least partially or completely covered by the seat poles.

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