Folding structure of vehicles and vehicles

Abstract

This utility model provides a folding structure and a vehicle, including a first folding member, a second folding member, a limiting member, and an elastic member. The first folding member has a first limiting portion. The second folding member has a second limiting portion. The first and second folding members can switch between a folded state and an unfolded state. In the unfolded state, the first and second folding members engage with each other to limit the unfolding angle of the first and second folding members. The limiting member can contact the second limiting portion under the action of an elastic force, and the first limiting portion can contact the limiting member to restrict the folding of the first and second folding members. The limiting member can separate from the first and second limiting portions under the action of an external force, so that the first and second folding members can fold relative to each other. The technical solution of this utility model aims to reduce the wear of the limiting member while keeping the first and second folding members in an unfolded state.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a folding structure for a vehicle and the vehicle itself. Background Technology

[0002] To facilitate the storage of mobility scooters, wheelchairs, and other vehicles, these vehicles are now typically equipped with folding mechanisms to reduce their size and storage space. Many related technologies use a pin-and-hole mechanism to limit the movement of the two folding components. The pin passes through a hole in one of the two components, restricting their rotation and keeping them in an unfolded or folded state. However, this method is prone to wear between the pin and the hole wall, making the pin difficult to insert or remove, affecting its lifespan, and compromising safety. Utility Model Content

[0003] This utility model provides a folding structure for a vehicle and the vehicle itself, which aims to reduce wear on the limiting components, extend service life, and improve safety by using a limiting component to keep the first and second folding components in an unfolded state.

[0004] In a first aspect, embodiments of the present invention provide a locking mechanism, comprising:

[0005] The first folding component is provided with a first limiting part;

[0006] The second folding component is rotatably connected to the first folding component and is provided with a second limiting part. The first folding component and the second folding component can switch between a folded state and an unfolded state.

[0007] The limiting member is rotatably connected to the second folding member;

[0008] An elastic element, connected to the second folding element and the limiting element, is used to apply an elastic force to the limiting element;

[0009] In the unfolded state, the first folding member and the second folding member are engaged to limit the unfolding angle of the first folding member and the second folding member. The limiting member can connect with the second limiting part under the action of the elastic force. The first limiting part can connect with the side of the limiting member away from the second limiting part along the rotation direction to limit the folding of the first folding member and the second folding member. The limiting member can separate from the first limiting part and the second limiting part under the action of external force so that the first folding member and the second folding member can be folded relative to each other.

[0010] Optionally, the limiting member includes a connecting portion and a snap-fit ​​portion protruding from the connecting portion. The connecting portion is rotatably connected to the second folding member. The connecting portion is used to engage with the second limiting portion, and the snap-fit ​​portion is used to engage with the first limiting portion.

[0011] Optionally, one end of the elastic member is connected to the second folding member or the second limiting part, and the other end is connected to the connecting part.

[0012] Optionally, the connecting portion includes a first connecting end and a second connecting end, the first connecting end being rotatably connected to the second folding member, and the second connecting end being used to connect with the second limiting portion.

[0013] Optionally, the limiting member has an abutting plane for abutting against the second limiting portion.

[0014] Optionally, the elastic element includes a torsion spring, the limiting member and the torsion spring are stacked on the second folding member, one end of the torsion spring is connected to the second folding member or the second limiting part, and the other end is connected to the limiting member, and the fastener passes through the torsion spring and the limiting member and is fastened to the second folding member.

[0015] Optionally, a mounting portion is provided on the side of the second limiting portion away from the second folding member, the mounting portion is disposed at a distance from the second folding member, the limiting member is disposed between the mounting portion and the second folding member, the torsion spring is located on the side of the mounting portion away from the second folding member, and the fastener passes through the torsion spring, the mounting portion and the limiting member and is fastened to the second folding member.

[0016] Optionally, the first folding member is further provided with a third limiting part; the third limiting part and the second limiting part cooperate to limit the unfolding angle of the first folding member and the second folding member.

[0017] Optionally, the folding structure further includes an operating component, which is tractively connected to the limiting member.

[0018] Optionally, the operating component includes a pull cord movably connected to the second folding member and connected to the limiting member.

[0019] Optionally, the operating component includes a pull cord and an operating member, the operating member being movably connected to the second folding member, one end of the pull cord being connected to the operating member, and the other end of the pull cord being connected to the limiting member.

[0020] Optionally, when the first limiting part and the second limiting part are respectively connected to the limiting member, the limiting member can rotate around the first direction and move away from the first limiting part;

[0021] The limiting member can rotate around the first direction by an angle a1, and the limiting member can rotate under the drive of the operating component by an angle a2, where a1>a2.

[0022] Secondly, embodiments of the present invention provide a means of transportation, including the folding structure described in the first aspect.

[0023] Optionally, the means of transportation includes a wheelchair or mobility scooter.

[0024] The folding structure and vehicle provided in this embodiment of the utility model limit the unfolding angle of the first and second folding components through a limiting engagement. The limiting component can rotate relative to the second folding component until it contacts the first limiting part, thereby restricting the folding of the first and second folding components, achieving bidirectional locking, and limiting the posture of the first and second folding components so that they can be stably maintained in the unfolded state. Furthermore, the limiting component can also contact the second limiting part under the action of elastic force. The second limiting part can limit the rotation of the limiting component, allowing it to stably contact the first limiting part. Simultaneously, the reaction force applied by the first limiting part to the limiting component can be transmitted to the second limiting part, which helps to share the force on the limiting component, reducing wear, extending the service life of the folding structure, and ensuring the safety of the folding structure in use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A front view of a folding structure provided in an embodiment of this utility model;

[0027] Figure 2 A bottom view of a folding structure provided in an embodiment of this utility model;

[0028] Figure 3 for Figure 2 A cross-sectional view of the folded structure along the BB direction;

[0029] Figure 4 for Figure 3 Enlarged view of point C;

[0030] Figure 5 A schematic diagram showing the separation of the limiting member and the first limiting part provided in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the first folding member and the second folding member folded relative to each other, provided in an embodiment of the present utility model.

[0032] Figure 7 for Figure 1 A schematic cross-sectional view of the folded structure along the AA direction.

[0033] Explanation of key figure labels:

[0034] 10. First folding component; 11. First limiting part; 111. Slot; 112. Guide arc surface; 12. Third limiting part; 20. Second folding component; 201. Main body part; 202. Connecting part; 21. Second limiting part; 22. Mounting part; 30. Limiting component; 301. Connecting part; 3011. Main body part; 3012. Abutting part; 30121. Abutting plane; 302. Snap-fitting part; 3021. First abutting surface; 3022. Second abutting surface; 303. Mounting hole; 40. Elastic component; 401. Torsion spring; 50. Fastener; 60. Operating component; 601. Pull cord. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1 to 4This utility model embodiment provides a folding structure for a vehicle. The folding structure includes a first folding member 10, a second folding member 20, a limiting member 30, and an elastic member 40. The first folding member 10 is provided with a first limiting portion 11. The second folding member 20 is rotatably connected to the first folding member 10 and is provided with a second limiting portion 21. The first folding member 10 and the second folding member 20 can switch between a folded state and an unfolded state. The limiting member 30 is rotatably connected to the second folding member 20. The elastic member 40 is provided on the second folding member 20 or the second limiting portion 21 and is connected to the limiting member 30. The elastic member 40 is used to apply an elastic force to the limiting member 30. In the unfolded state, the first folding member 10 and the second folding member 20 are engaged to limit the unfolding angle of the first folding member 10 and the second folding member 20. The limiting member 30 can connect with the second limiting part 21 under the action of elastic force, and the first limiting part 11 can connect with the side of the limiting member 30 away from the second limiting part 21 in the rotational direction to limit the folding of the first folding member 10 and the second folding member 20. The limiting member 30 can separate from the first limiting part 11 and the second limiting part 21 under the action of external force, so that the first folding member 10 and the second folding member 20 can be folded relative to each other.

[0037] The first folding member 10 and the second folding member 20 are engaged to limit the unfolding angle of the first folding member 10 and the second folding member 20. The limiting member 30, under the action of elastic force, connects with the first limiting part 11, thereby restricting the folding of the first folding member 10 and the second folding member 20, achieving bidirectional locking, and limiting the posture of the first folding member 10 and the second folding member 20, ensuring that the first folding member 10 and the second folding member 20 can be stably maintained in the unfolded state. Furthermore, the limiting member 30 can also connect with the second limiting part 21 under the action of elastic force. The second limiting part 21 can limit the rotation of the limiting member 30, ensuring a stable connection between the limiting member 30 and the first limiting part 11. Simultaneously, the reaction force applied by the first limiting part 11 to the limiting member 30 can be transmitted to the second limiting part 21, which helps to share the force on the limiting member 30, reducing wear on the limiting member 30, extending the service life of the folding structure, and ensuring the safety of the folding structure in use.

[0038] Understandably, the first folding member 10 and the second folding member 20 can rotate relative to each other, allowing them to switch between a folded state and an unfolded state. Specifically, the first folding member 10 can rotate relative to the second folding member 20, or the second folding member 20 can rotate relative to the first folding member 10, or the first folding member 10 and the second folding member 20 can rotate together towards each other or away from each other.

[0039] Optionally, the first folding member 10 is provided with a first limiting part 11, which is not part of the first folding member 10. The first limiting part 11 and the first folding member 10 can be separately provided and connected by snap-fitting, welding or other methods. Alternatively, the first limiting part 11 and the first folding member 10 can be integrally formed. The second folding member 20 is provided with a second limiting part 21, which is not part of the second folding member 20. The second limiting part 21 and the second folding member 20 can be separately provided and connected by snap-fitting, welding or other methods. Alternatively, the second limiting part 21 and the second folding member 20 can be integrally formed.

[0040] Specifically, when the folding frame is idle, an external force can be applied to the limiting member 30, causing the limiting member 30 to overcome the elastic force and rotate under the action of the external force. The limiting member 30 separates from the first limiting part 11 and the second limiting part 21, so that the first folding member 10 and the second folding member 20 can be folded relative to each other and switched to the folding state.

[0041] For example, the limiting member 30 can abut against the second limiting part 21 under the action of elastic force, or the limiting member 30 can squeeze the second limiting part 21 under the action of elastic force, or the limiting member 30 can engage with the second limiting part 21 under the action of elastic force, so that the limiting member 30 and the second limiting part 21 are connected, and the second limiting part 21 restricts the angle of the limiting member 30 relative to the second folding member 20.

[0042] like Figure 1 and Figure 4 As shown, in some embodiments, the limiting member 30 includes a connecting portion 301 and a snap-fit ​​portion 302 protruding from the connecting portion 301. The connecting portion 301 is rotatably connected to the second folding member 20. The connecting portion 301 is used to connect with the second limiting portion 21, and the snap-fit ​​portion 302 is used to connect with the first limiting portion 11. In this way, the limiting portions can be reasonably arranged so that the snap-fit ​​portion 302 and the connecting portion 301 of the limiting portion are respectively connected with the first limiting portion 11 and the second limiting portion 21, avoiding mutual interference between the parts.

[0043] For example, such as Figure 4 As shown, the first limiting part 11 has a slot 111, and the engaging part 302 can rotate to be located within the slot 111 and abut against the slot wall surface of the slot 111. The engaging part 302 protrudes from the connecting part 301 and can penetrate deep into the slot 111 of the first limiting part 11, so that the engaging part 302 and the slot wall surface of the slot 111 are stably abutted, stably restricting the relative folding of the first folding member 10 and the second folding member 20. Figure 5 As shown, when the latching part 302 rotates against the elastic force and disengages from the latching slot 111, the first folding member 10 and the second folding member 20 can be folded relative to each other, so that the first folding member 10 and the second folding member 20 switch to the folded state.

[0044] For example, the first limiting part 11 can rotate with the first folding member 10 around point A relative to the second folding member 20, and the locking part 302 can rotate with the connecting part 301 around point B relative to the second folding member 20. When the limiting member 30 abuts against the first limiting part 11 and the second limiting part 21, the locking part 302 contacts the first limiting part 11 at point C. At this time, the distance from point A to point C plus the distance from point B to point C is greater than the distance from point A to point B, that is, (AC+BC)>AB. Point C is outside the line connecting point A and point B. The line connecting the three points forms a triangle, so that the locking part 302 is stably connected to the first limiting part 11 and restricts the first limiting part 11 from rotating with the first folding member 10 relative to the second folding member 20.

[0045] like Figure 4 As shown, in some embodiments, the connecting part 301 includes a first connecting end 301a and a second connecting end 301b. The first connecting end 301a is rotatably connected to the second folding member 20, and the second connecting end 301b is used to connect with the second limiting part 21 to avoid interference.

[0046] like Figure 4 As shown, in some embodiments, the limiting member 30 has an abutment plane 30121 for abutting against the second limiting portion 21. It is understood that by abutting against the second limiting portion 21 through the abutment plane 30121, the contact area between the limiting member 30 and the second limiting portion 21 can be increased, which helps in the force transmission between the limiting member 30 and the second limiting portion 21 and avoids stress concentration between the limiting member 30 and the second limiting portion 21.

[0047] Of course, in other embodiments, the limiting member 30 may also abut against the second limiting part 21 via an arc surface.

[0048] For example, such as Figure 4 As shown, the limiting member 30 includes a connecting part 301 and a snap-fit ​​part 302. The connecting part 301 includes a main body part 3011 and an abutting part 3012 protruding from the main body part 3011. The main body part 3011 is rotatably connected to the second folding member 20. The abutting part 3012 has an abutting plane 30121 so that the abutting plane 30121 abuts against the second limiting member 21.

[0049] like Figure 4 and Figure 6As shown, in some embodiments, the first limiting part 11 also has a guiding arc surface 112. During the process of the first folding member 10 and the second folding member 20 switching from the folded state to the unfolded state, the locking part 302 can abut against the guiding arc surface 112 under the elastic action of the elastic member 40, and slide along the guiding arc surface 112 as the first folding member 10 and the second folding member 20 rotate relative to each other. When the first folding member 10 and the second folding member 20 are in the unfolded state, the locking part 302 rotates under the elastic action of the elastic member 40 to be located in the slot 111 and abut against the slot wall surface of the slot 111.

[0050] For example, the latching portion 302 has a first abutting surface 3021 and abutting surface 3022 disposed opposite to each other in the rotation direction of the limiting member 30. The distance between the first abutting surface 3021 and the second abutting surface 3022 gradually decreases toward the side away from the connecting portion 301. The first abutting surface 3021 is used to abut against the groove wall surface of the latching groove 111, and the second abutting surface 3022 is used to abut against the guide arc surface 112.

[0051] For example, both the first contact surface 3021 and the second contact surface 3022 can be planar or convex.

[0052] For example, the elastic element 40 includes, but is not limited to, sheet springs, springs, and torsion springs.

[0053] like Figure 4 and Figure 5 As shown, in some embodiments, one end of the elastic member 40 is connected to the second folding member 20 or the second limiting part 21, and the other end is connected to the connecting part 301 to avoid interference between the elastic member 40 and other components.

[0054] Furthermore, such as Figure 4 As shown, the connecting part 301 includes a first connecting end 301a and a third connecting end 301c. The first connecting end 301a is rotatably connected to the second folding member 20, and the other end of the elastic member 40 is connected to the third connecting end 301c, which can increase the lever arm so that the elastic member 20 can drive the limiting member 30 to rotate.

[0055] like Figure 1 , Figure 7 As shown, in some embodiments, the elastic element 40 includes a torsion spring 401, a limiting element 30, and the torsion spring 401 are stacked on the second folding element 20. One end of the torsion spring 401 is connected to the second folding element 20 or the second limiting part 21, and the other end is connected to the limiting element 30. Fasteners pass through the torsion spring 401 and the limiting element 20 and are fastened to the second folding element. It can be understood that the fasteners 50 can be used to install the torsion spring 401 and the limiting element 30, simplifying the structure of the folding structure.

[0056] For example, fastener 50 includes screws, bolts, etc.

[0057] like Figure 1 and Figure 7 As shown, in some embodiments, a mounting portion 22 is provided on the side of the second limiting portion 21 away from the second folding member 20, and the mounting portion 22 is spaced apart from the second folding member 20. A limiting member 30 is disposed between the mounting portion 22 and the second folding member 20, a torsion spring 401 is located on the side of the mounting portion 22 away from the second folding member 20, and a fastener 50 passes through the torsion spring 401, the mounting portion 22, and the limiting member 30 and is fastened to the second folding member 20. It is understood that the mounting portion 22 is located between the limiting member 30 and the torsion spring 401 to avoid interference between the limiting member 30 and the limiting member 20.

[0058] For example, the limiting member 30 is provided with a mounting hole 303, and the limiting frame 30 passes through the torsion spring 401, the mounting hole 303 and the limiting member 30 and is fastened to the second folding member 20.

[0059] For example, the mounting portion 22 is connected to the second limiting portion 21, the torsion spring 401 is located on the side of the mounting portion 22 away from the second folding member 20, and the torsion spring 401 can be supported on the mounting portion 22. The two end legs of the torsion spring 401 are respectively connected to the mounting portion 22 and the limiting member 30. For example, the mounting portion 22 is provided with a first connecting hole, one end of the torsion spring 401 is installed in the first connecting hole, a part of the connecting portion 301 is rotatably disposed between the mounting portion 22 and the second folding member 20, and another part protrudes from the mounting portion 22 in a direction perpendicular to the rotation direction of the limiting member 30, so that the other end of the torsion spring 401 is installed in the second connecting hole on the other part of the connecting portion 301.

[0060] For example, such as Figure 7 As shown, the second folding member 20 includes a main body portion 201 and a connecting portion 202 disposed on the main body portion 201. A mounting portion 22 is disposed opposite to the connecting portion 202. A fastener 50 passes through a torsion spring 401, the mounting portion 22, and the limiting member 30 before being fastened to the connecting portion 202. The connecting portion 202 can be separately disposed from the main body portion 201, while the connecting portion 202, the second limiting member 21, and the mounting portion 22 are integrally formed for ease of manufacturing. Of course, in other embodiments, the connecting portion 202, the second limiting member 21, and the mounting portion 22 can also be separately disposed.

[0061] like Figure 1 and Figure 4As shown, in some embodiments, the first folding member 10 is further provided with a third limiting part 12. The third limiting part 12 and the second limiting part 21 cooperate to limit the unfolding angle of the first folding member 10 and the second folding member 20. It can be understood that the limiting part 30 and the third folding member can respectively connect to different sides of the second limiting part 21, and the second limiting part 21 can simultaneously limit the third limiting part 12 and the limiting part 30, thereby achieving structural reuse and simplifying the structure of the folding structure.

[0062] For example, the limiting member 30 and the third folding member are respectively connected to opposite sides of the second limiting portion 21. Alternatively, the limiting member 30 and the third folding member may be connected to adjacent sides of the second limiting portion 21. For example Figure 4 As shown, when the first folding member 10 and the second folding member 20 rotate relative to each other to the unfolded state, the third limiting part 12 of the first folding member 10 can connect with one side of the second limiting part 21, limiting the unfolding angle of the first folding member 10 and the second folding member 20; the limiting member 30 includes a connecting part 301 and a snap-fit ​​part 301 protruding from the connecting part. The connecting part 301 includes a main body part 3011 and an abutting part 3012 protruding from the main body part 3011. The main body part 3011 is rotatably connected to the second folding member. The abutting part 3012 can rotate counterclockwise with the main body part 3011 and connect with the other side of the second limiting part 21, limiting the folding of the first folding member 10 and the second folding member 20.

[0063] For example, such as Figure 4 As shown, the second limiting part 21 has a limiting plane on the side that is in contact with the limiting member 30. The limiting member 30 includes a connecting part 301 and a snap-fit ​​part 301 protruding from the connecting part. The connecting part 301 includes a main body part 3011 and an abutting part 3012 protruding from the main body part 3011. The main body part 3011 is rotatably connected to the second folding member. The main body part 3011 has an abutting plane 30121. The abutting part 3012 can rotate counterclockwise with the main body part 3011 so that the abutting plane 30121 of the abutting part 3012 is stably in contact with the limiting plane of the second limiting part 21.

[0064] For example, the third limiting part 12 and the first limiting part 11 can be separately provided or integrally formed.

[0065] like Figure 1 and Figure 3 As shown, in some embodiments, the folding structure further includes an operating component 60, which is tractively connected to the limiting member 30. By providing the operating component 60, the limiting member 30 can be rotated, making it more convenient for the user to operate.

[0066] For example, the operating component 60 can automatically control the limiting member 30 when it receives an execution command, so that the limiting member 30 separates from the first limiting part 11 and from the second limiting part 21; or, the operating component 60 can drive the limiting member 30 under the manual operation of the user, so that the limiting member 30 separates from the first limiting part 11 and from the second limiting part 21, thereby enabling the first folding member 10 and the second folding member 20 to fold relative to each other.

[0067] Furthermore, the operating component 60 includes a pull cord 601, which is movably connected to the second folding member 20 and connected to the limiting member 30. It is understood that using the pull cord 601 to drive the limiting member 30 to rotate simplifies the structure of the operating component 60 and facilitates transmission.

[0068] For example, the pull cord 601 may be made of materials such as stainless steel or nylon.

[0069] In some embodiments, the operating component 60 includes an operating member (not shown) and a pull cord 601. The operating member is movably connected to the second folding member 20. One end of the pull cord 601 is connected to the connecting part 301, and the other end is connected to the operating member. The user can control the operating member to move relative to the second folding member 20, so that the operating member drives the pull cord 601 to pull the limiting member 30. The operating member can be rotatably connected to the second folding member 20, or it can be slidably connected to the second folding member 20. The specific configuration can be adjusted according to actual conditions and is not limited here.

[0070] For example, the first limiting part 11 is formed with a slot 111, and the engaging part 302 can rotate to be located in the slot 111 and abut against the slot wall surface of the slot 111. The pull rope 601 can drive the limiting member 30 to rotate so that the engaging part 302 of the limiting member 30 disengages from the slot 111, so that the first folding member 10 and the second folding member 20 can be folded.

[0071] For example, the operating component includes a pull cord 601 and an operating member. The operating member has a limited range of motion. The maximum distance that the operating member can pull the pull cord 601 is L2. If the distance that the pull cord 601 is pulled is L1, the locking part 302 can disengage from the slot 111, and the first folding member 10 and the second folding member 20 can be folded relative to each other. Then the operating component must satisfy the condition: (L2-L1)>X, where X is the cumulative deviation caused by various adverse factors such as changes in the size of the pull cord 601, processing and assembly deviations, etc., to ensure that the operating component can drive the locking part 302 out of the slot 111 under the most unfavorable conditions, so that the first folding member 10 and the second folding member 20 can be folded relative to each other.

[0072] In some embodiments, the operating component 60 includes a gear transmission component, and the connecting portion 301 is provided with transmission teeth. The gear transmission component meshes with the transmission teeth, so that the gear transmission component can drive the connecting portion 301 to rotate.

[0073] In some embodiments, the operating component 60 includes a handle rotatably connected to the second folding member 20, and a limiting member 30 disposed on the handle. The user can hold the handle and control the handle to rotate, so that the limiting member 30 on the handle rotates together with the handle.

[0074] In some embodiments, when the first limiting part 11 and the second limiting part 21 are respectively connected to the limiting member 30, the limiting member 30 can rotate around the first limiting part 11 and move away from the first limiting part 11. The angle by which the limiting member 30 can rotate around the first limiting part 11 is a1, and the angle by which the limiting member 30 can rotate under the drive of the operating component 60 is a2, where a1>a2. It can be understood that when the above relationship is satisfied, the angle by which the limiting member 30 can rotate relative to the second folding member 20 is greater than the angle by which the limiting member 30 can rotate under the drive of the operating component 60. This prevents the limiting member 30 from being subjected to resistance other than elastic force during the process of the operating component 60 driving the limiting member 30 to rotate so that the limiting member 30 separates from the first limiting part 11 and the second limiting part 21, thereby reducing damage to the operating component 60.

[0075] For example, such as Figure 4 As shown, the first direction can be a direction perpendicular to the paper.

[0076] For example, when the limiting member 30 abuts against the first limiting part 11 and the second limiting part 21, the limiting member 30 can overcome the elastic force and rotate 90° around the first direction under the action of external force, and then abut against the second limiting part 21 again. At this time, a1 is 90°. Under the drive of the pull rope 601, the limiting member 30 can overcome the elastic force and rotate 60° around the first direction from the state of abutting against the first limiting part 11 and the second limiting part 21. At this time, a2 is 60°. a2 is less than a1. Even if the pull rope 601 moves to the limit position, the limiting member 30 will not collide with the second limiting part 21, thus preventing the pull rope 601 from being broken.

[0077] This utility model embodiment also provides a means of transportation, which includes the folding structure described in any of the preceding embodiments. It is understood that the means of transportation having the folding structure also possesses all of its technical effects, namely, the second limiting part 21 can limit the rotation of the limiting member 30, allowing the limiting member 30 to stably connect with the first limiting part 11 so that the first folding member 10 and the second folding member 20 remain in the unfolded state. Simultaneously, the reaction force applied by the first limiting part 11 to the limiting member 30 can be transmitted to the second limiting part 21, which helps to share the force on the limiting member 30, reducing wear on the limiting member 30, extending the service life of the folding structure, and ensuring the safety of the folding structure in use.

[0078] Optionally, the means of transportation may be a wheelchair or mobility scooter.

[0079] For example, the vehicle includes a foldable frame, the foldable frame including the folding structure, the first folding member 10 constituting a first frame of the foldable frame, and the second folding member 20 constituting a second frame of the foldable frame.

[0080] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A folding structure of a vehicle, characterized by, include: The first folding component is provided with a first limiting part; The second folding component is rotatably connected to the first folding component and is provided with a second limiting part. The first folding component and the second folding component can switch between a folded state and an unfolded state. The limiting member is rotatably connected to the second folding member; An elastic element is disposed on the second folding member or the second limiting part, connected to the limiting member, and used to apply an elastic force to the limiting member; In the unfolded state, the first folding member and the second folding member are engaged to limit the unfolding angle of the first folding member and the second folding member. The limiting member can connect with the second limiting part under the action of the elastic force. The first limiting part can connect with the side of the limiting member away from the second limiting part along the rotation direction to limit the folding of the first folding member and the second folding member. The limiting member can separate from the first limiting part and the second limiting part under the action of external force so that the first folding member and the second folding member can be folded relative to each other.

2. The folded structure of claim 1, wherein, The limiting member includes a connecting part and a snap-fit ​​part protruding from the connecting part. The connecting part is rotatably connected to the second folding member. The connecting part is used to connect with the second limiting part, and the snap-fit ​​part is used to connect with the first limiting part.

3. The folded structure of claim 2, wherein, One end of the elastic element is connected to the second folding element or the second limiting part, and the other end is connected to the connecting part.

4. The folded structure of claim 2, wherein, The connecting part includes a first connecting end and a second connecting end. The first connecting end is rotatably connected to the second folding member, and the second connecting end is used to connect with the second limiting part.

5. The folded structure according to any one of claims 1-4, characterized in that The limiting member has an abutting plane, which is used to abut against the second limiting part.

6. The folded structure according to any one of claims 1-4, characterized in that The elastic element includes a torsion spring. The limiting member and the torsion spring are stacked on the second folding member. One end of the torsion spring is connected to the second folding member or the second limiting part, and the other end is connected to the limiting member. Fasteners pass through the torsion spring and the limiting member and are fastened to the second folding member.

7. The folded structure of claim 6, wherein, The second limiting part has a mounting part on the side away from the second folding member. The mounting part is spaced apart from the second folding member. The limiting member is disposed between the mounting part and the second folding member. The torsion spring is located on the side of the mounting part away from the second folding member. The fastener passes through the torsion spring, the mounting part and the limiting member and is fastened to the second folding member.

8. The folded structure according to any one of claims 1-4, characterized in that The first folding member is further provided with a third limiting part; the third limiting part and the second limiting part cooperate to limit the unfolding angle of the first folding member and the second folding member.

9. The folded structure according to any one of claims 1-4, characterized in that The folding structure also includes an operating component, which is tractively connected to the limiting member.

10. The folded structure of claim 9, wherein, The operating component includes a pull cord, which is movably connected to the second folding member and connected to the limiting member.

11. The folded structure of claim 9, wherein, The operating component includes a pull cord and an operating member. The operating member is movably connected to the second folding member. One end of the pull cord is connected to the operating member, and the other end of the pull cord is connected to the limiting member.

12. The folded structure of claim 9, wherein, When the first limiting part and the second limiting part are respectively in contact with the limiting member, the limiting member can rotate around the first direction and move away from the first limiting part; The limiting member can rotate around the first direction by an angle a1, and the limiting member can rotate under the drive of the operating component by an angle a2, where a1>a2.

13. A vehicle, characterized by Includes the folding structure as described in any one of claims 1-12.

14. The vehicle of claim 13, wherein, The means of transportation include wheelchairs or mobility scooters.

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