Folding device and folding vehicle

Abstract

The utility model belongs to the technical field of the tool for walking, concretely is a kind of folding device and folding car. Including: first folding body, second folding body, second folding body is rotatably connected in first folding body, and the outside of second folding body is vertically spaced apart and is provided with first limiting part and second limiting part;First locking assembly includes handle rotatably connected in first folding body and first locking piece movably arranged on handle, when folding device is in locking state, handle rotates to vertical position and drives first locking piece and first limiting part and is locked with the interlocking;Second locking assembly includes second locking piece rotatably connected on first folding body and is linked with handle, when folding device is in locking state, second locking piece and second limiting part and are locked with the interlocking;When handle rotates from locking state to unlocking state, drive second locking piece and separate second limiting part.The utility model has the advantages of stable structure, convenient operation and can realize the advantages of one-handed single-step unlocking.

Description

Technical Field

[0001] This utility model belongs to the field of transportation tools technology, specifically a folding device and a folding vehicle. Background Technology

[0002] With the increasing popularity of portable transportation tools, such as folding bicycles and folding electric vehicles, the folding mechanism, as a core component, has seen its structural stability and ease of operation become key performance indicators. The folding mechanism ensures safe use by reliably locking in the unfolded state, while also allowing for quick folding to save space when stored.

[0003] Existing folding devices mostly employ single-point locking mechanisms, such as a latch or buckle engaging with a corresponding limiting structure. Such structures are prone to wobbling under heavy loads or complex forces, exhibiting insufficient stability. To improve locking reliability, some solutions employ a dual-locking-point design, but this typically presents cumbersome operational issues: either requiring the operation of two independent locking mechanisms, increasing the number of steps; or employing complex transmission structures for linkage, resulting in a bulky structure and high cost.

[0004] Therefore, there is an urgent need in this field for a new type of folding device that can achieve quick one-handed, one-step operation while ensuring structural strength and locking stability, and also has the advantages of compact structure and high reliability. Utility Model Content

[0005] To address the problems mentioned above, this utility model provides a folding device and a folding vehicle, which have the advantages of stable structure, convenient operation, and the ability to unlock with one hand and one step.

[0006] The present invention adopts the following technical solution:

[0007] A folding device, comprising:

[0008] First fold body;

[0009] The second folding body is rotatably connected to the first folding body, and the outer side of the second folding body is provided with a first limiting part and a second limiting part at vertical intervals;

[0010] The first locking assembly includes a handle rotatably connected to the first folding body and a first locking member movably disposed on the handle. When the folding device is in the locked state, the handle is rotated to a vertical position and drives the first locking member to engage and lock with the first limiting part.

[0011] The second locking assembly includes a second locking member rotatably connected to the first folding body and linked to the handle. When the folding device is in the locked state, the second locking member engages and locks with the second limiting part. When the handle is rotated from the locked state to the unlocked state, the handle drives the first locking member to disengage from the first limiting part, and at the same time, the second locking member is linked to disengage from the second limiting part.

[0012] Furthermore, the handle is rotatably connected to the first folding body via a hinge shaft, the second locking member is vertically connected to the hinge shaft and has a linkage part, and a pushing part is provided on the handle at a position corresponding to the linkage part;

[0013] When the handle is rotated from the locked state to the unlocked state, the pushing part presses against the linkage part, causing the second locking member to rotate and release from the second limiting part.

[0014] Furthermore, an elastic reset member is sleeved on the hinge shaft. One end of the elastic reset member acts on the first folding body, and the other end acts on the second locking member, providing the second locking member with a reset elastic force.

[0015] Furthermore, the second locking member is movably disposed on the hinge shaft along the radial direction of the hinge shaft, and the elastic reset member includes a first spring portion fitted on the hinge shaft and a second spring portion fitted on the second locking member;

[0016] The first spring acts on the first folding body to provide a restoring force toward the vertical position for the second locking member, and the second spring acts on the second locking member to provide a restoring force for the second locking member to extend upward away from the second limiting part.

[0017] Furthermore, the first spring portion and the second spring portion are integrally formed by coiling the same spring body.

[0018] Furthermore, the two ends of the spring body are a first working end and a second working end, respectively. The first working end and the second working end extend in the same direction, and both the first working end and the second working end abut against the side wall of the first folding body.

[0019] Furthermore, the middle part of the spring body is bent upward to form a U-shaped elastic arm, which is the second spring part.

[0020] Furthermore, the spring body includes a first connecting section and a second connecting section; the first connecting section is wound around the outer periphery of the hinge shaft and connected between the U-shaped elastic arm and the first working end; the second connecting section is wound around the outer periphery of the hinge shaft and connected between the U-shaped elastic arm and the second working end; the first connecting section and the second connecting section constitute the first spring portion.

[0021] Furthermore, the second spring portion is located above the first spring portion.

[0022] Furthermore, the second limiting part consists of two parallel first ear seats formed on the outer side of the second folding body, with a groove formed between the two first ear seats; the second locking member includes a snap-fit ​​part and a connecting part connected to the lower end of the snap-fit ​​part;

[0023] When the folding device is in the locked state, the lower surface of the snap-fit ​​part engages with the upper surface of the first ear seat, and the connecting part is at least partially accommodated in the groove.

[0024] Furthermore, the second locking member also includes a sliding part and a linkage part connected sequentially to the lower end of the connecting part. The sliding part is slidably disposed on the hinge shaft in a vertical direction. The linkage part is connected to the lower end of the sliding part and located below the hinge shaft. The hinge shaft is provided with a sliding hole adapted to the sliding part. The outer diameter of the linkage part is larger than the inner diameter of the sliding hole.

[0025] Furthermore, the handle is also provided with a pressing part corresponding to the second locking member. When the folding device is in the locked state, the pressing part abuts against the top of the second locking member, so that the lower surface of the locking part is pressed against the upper surface of the first ear seat.

[0026] Furthermore, a first step is formed on the side of the second locking member facing the first folding body, and a second step is formed on the first folding body at a position corresponding to the first step; when the folding device is unlocked, the first step and the second step abut against each other to restrict the vertical movement of the second locking member.

[0027] Furthermore, the upper surface of the second locking member is an arc-shaped surface, and the lower surface of the second limiting part is a guide slope that is inclined upward toward the handle.

[0028] Furthermore, the first limiting part is a snap-fit ​​block fixed to the outside of the second folding body, and the first locking member is a toggle hook rotatably connected to the handle. The toggle hook engages and locks with the snap-fit ​​block under the action of the return spring.

[0029] This utility model also provides a folding vehicle, including any of the above-mentioned folding devices.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] (1) The folding device of this utility model forms a double insurance through the linkage design of the first locking component and the second locking component. When unlocking, the first safety lock must be released first before the second safety lock can be released. This sequential design provides higher security. The user only needs to operate one handle to release the first locking component and the second locking component in the preset logical sequence by rotating the handle, which simplifies the unlocking process.

[0032] (2) The folding device of this utility model is provided with an elastic reset member on the hinge shaft to provide reset for the second locking member. The elastic reset member includes a first spring part and a second spring part, which ensures that it can reliably extend upward into the pre-locking or unlocking position and can stably remain in the vertical state, thereby reducing the uncertain movement of the second locking member.

[0033] (3) The folding device of this utility model has a second step on the first folding body and a first step on the second locking member. The first step and the second step abut against each other, which can prevent the handle from being accidentally locked in the non-closed state and avoid damage to the locking member. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0035] Figure 1 This is a structural diagram of the locking state of a folding device provided in an embodiment of this application;

[0036] Figure 2 A schematic cross-sectional view of the locking state of a folding device provided in an embodiment of this application;

[0037] Figure 3 A diagram showing the pre-locking state of the second safety lock of a folding device provided in an embodiment of this application;

[0038] Figure 4 A diagram showing the pre-opening state of the second folding body in the pre-locked state of the second safety lock of the folding device provided in an embodiment of this application;

[0039] Figure 5 This is a structural diagram of the unlocked state of a folding device provided in an embodiment of this application;

[0040] Figure 6 This is a diagram showing the second folding body of a folding device in a depressed state according to an embodiment of this application.

[0041] Figure 7 This is a structural diagram of the second locking assembly of a folding device provided in an embodiment of this application;

[0042] Figure 8 This is a structural diagram of the first locking assembly of a folding device provided in an embodiment of this application;

[0043] Figure 9 This is a schematic diagram of the handle structure of a folding device provided in an embodiment of this application;

[0044] Figure 10 This is a schematic diagram of the elastic reset member structure provided in an embodiment of this application;

[0045] Wherein: 1-First folding body, 11-Second step portion, 2-Second folding body, 21-First limiting portion, 22-Second limiting portion, 221-First ear seat, 222-Groove, 223-Guide inclined surface, 3-First locking assembly, 31-Handle, 311-Pushing portion, 312-Pressing portion, 32-First locking member, 33-Reset spring, 4-Second locking assembly, 41-Second locking member, 411-Linkage portion, 412-Snap-fit ​​portion, 413-Connecting portion, 414-Sliding portion, 415-First step portion, 416-Arc-shaped surface, 42-Elastic reset member, 421-First spring portion, 422-Second spring portion, 423-First actuating end, 424-Second actuating end, 425-First connecting section, 426-Second connecting section, 427-Closed end, 5-Hinge shaft. Detailed Implementation

[0046] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The present invention will be described in detail with specific embodiments.

[0048] See Figures 1 to 10 This utility model provides a folding device, including a first folding body 1, a second folding body 2, a first locking assembly 3, and a second locking assembly 4, wherein: the second folding body 2 is rotatably connected to the first folding body 1, and a first limiting part 21 and a second limiting part 22 are vertically spaced on the outer side of the second folding body 2; the first locking assembly 3 includes a handle 31 rotatably connected to the first folding body 1 and a first locking member 32 movably disposed on the handle 31. (See reference...) Figure 1 and Figure 2When the folding device is in the locked state, the handle 31 rotates to a vertical position and drives the first locking member 32 to engage and lock with the first limiting part 21, forming a first safety lock. The second locking assembly 4 includes a second locking member 41 rotatably connected to the first folding body 1 and linked with the handle 31. When the folding device is in the locked state, the second locking member 41 engages and locks with the second limiting part 22, forming a second safety lock. When the handle 31 rotates from the locked state to the unlocked state, the handle 31 simultaneously drives the second locking member 41 to disengage from the second limiting part 22. The first folding body 1 is a fixed component constituting the main structure of the folding device, used to support the rotatably connected second folding body 2. The handle 31 of the first locking assembly 3 serves as an operating component. Through the linkage between the handle 31, the first locking member 32, and the second locking member 41, the locking and unlocking of the first folding body 1 and the second folding body 2 can be completed by operating the handle with one hand.

[0049] Specifically, when the handle 31 is in the vertical locking position, the handle 31 drives the first locking member 32 to engage with the first limiting part 21 on the upper part of the second folding body 2, forming a main locking point constraint. Simultaneously, the rotation of the handle 31 at a certain angle triggers the second locking member 41 to engage with the second limiting part 22, forming an auxiliary locking point. During the unlocking process, the handle 31 rotates downwards. First, the first locking member 32 disengages from the first limiting part 21 as the handle 31 rotates. Then, after the handle 31 continues to rotate downwards at a certain angle, the pushing part 311 of the handle 31 contacts the linkage part 411 of the second locking member 41, forcing the second locking member 41 to rotate and disengage from the second limiting part 22. This achieves simultaneous control of the first locking member 32 and the second locking member 41 through mechanical linkage with a single rotation of the handle 31, without requiring additional operating steps. This avoids structural complexity and ensures the stability of the locked state. As can be seen from the above analysis, the folding device of this application includes two safety locks, achieving dual-point locking and improving structural stability.

[0050] For further details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 7The handle 31 is rotatably connected to the first folding body 1 via the hinge shaft 5. The second locking member 41 is vertically connected to the hinge shaft 5 and has a linkage part 411. The linkage part 411 is located below the hinge shaft 5. A pushing part 311 is provided on the handle 31 at a position corresponding to the linkage part 411. When the handle 31 is rotated from the locked state to the unlocked state, the pushing part 311 presses against the linkage part 411, driving the second locking member 41 to rotate so as to unlock it from the second limiting part 22. The hinge shaft 5 is the rotational center connecting the handle 31 and the first folding body 1, providing a stable fulcrum for the rotational movement of the handle 31. The linkage part 411 is formed on the second locking member 41 and forms a contact transmission relationship with the pushing part 311 of the handle 31. During the unlocking action, the handle 31 rotates downward around the hinge shaft 5, and the pushing part 311 comes into contact with the linkage part 411. As the rotation angle of the handle 31 increases, the lateral thrust applied by the pushing part 311 to the linkage part 411 gradually increases, forcing the second locking member 41 to rotate outward. This rotational movement of the second locking member 41 disengages it from the second limiting part 22, releasing the constraint of the second locking assembly 4 on the second folding body 2. Through the above technical solution, the operator only needs to rotate the handle 31 with one hand to simultaneously release the constraints of two locking points, significantly improving the convenience of operation while maintaining structural stability. At the same time, the contact transmission design between the linkage part 411 and the pushing part 311 ensures the reliability of the action transmission and avoids unlocking failure.

[0051] For further details, see section 3. Figure 4 , Figure 5 and Figure 7 An elastic reset member 42 is sleeved on the hinge shaft 5. One end of the elastic reset member 42 acts on the first folding body 1, and the other end acts on the second locking member 41, providing a reset elastic force for the second locking member 41. Specifically, when the handle 31 is rotated into the unlocked state, the first safety lock is opened first. At this time, since the second safety lock is not opened, the second folding body 2 and the first folding body 1 are still locked. Then, the handle 31 is rotated downwards, causing the linkage part 411 of the second locking member 41 to rotate under the action of the pushing part 311. At this time, the elastic reset member 42 sleeved on the hinge shaft 5 undergoes elastic deformation and accumulates restoring force. When the second safety lock is opened, the second folding body 2 is unfolded upwards. At the same time, after the external force of the handle 31 on the second locking member 41 is released, the reset force of the elastic reset member 42 drives the second locking member 41 to rotate in the opposite direction to the vertical state.

[0052] For further details, please refer to [link / reference]. Figure 7 and Figure 10The second locking member 41 is radially movably disposed on the hinge shaft 5. The elastic reset member 42 includes a first spring portion 421 fitted on the hinge shaft 5 and a second spring portion 422 fitted on the second locking member 41. The first spring portion 421 acts on the first folding body 1 to provide a reset force to the second locking member 41 toward the vertical position, and the second spring portion 422 acts on the second locking member 41 to provide a reset force to the second locking member 41 toward the extended locked position. The radial movement of the second locking member 41 refers to its freedom of movement in the radial direction of the hinge shaft 5. For example, a radial groove is provided on the hinge shaft 5, and the second locking member 41 is slidably disposed within the radial groove. This design allows the second locking member 41 to generate radial displacement when it is rotated to unlock. In other words, in the unloaded state, both the second locking member 41 and the radial groove are vertically disposed. In this application, the first spring portion 421 refers to the helical segment coaxially mounted with the hinge shaft 5 in the elastic reset member, which generates a torque to reset the second locking member 41 through circumferential elastic deformation; the second spring portion 422 refers to the extension segment connected to the second locking member 41 in the elastic reset member, which can adopt a bent U-shaped elastic arm structure, generating a force to push the second locking member 41 outward through radial elastic deformation. When the handle 31 is rotated to the unlocked position, that is, after the first and second safety locks are fully unlocked, and the second folding body 2 is unfolded upward, at this time, under the action of the elastic reset member 42, the second locking member 41 is in a vertical state, and at the same time, the second locking member 41 pops upward a certain distance. It can be understood that if the second locking member 41 and the second limiting part 22 are still in close contact after the first safety lock is released, the second locking member 41 cannot rotate outward. This application achieves the pre-unlocking of the second locking member 41 and the second limiting part 22 by using the up-and-down sliding design of the second locking member 41 in conjunction with the second spring part 422. That is, by moving the second locking member 41 upward a certain distance to disengage from the contact with the second limiting part 22, the activity space for the rotation of the second locking member 41 is reserved.

[0053] For further details, please refer to [link / reference]. Figure 10 The first spring portion 421 and the second spring portion 422 are integrally formed and wound around the same spring body. This application provides torsional restoring force through the first spring portion 421 and radial ejection force through the second spring portion 422. Both are wound around the same spring body, thus integrating the functions of two independent components. They can be assembled into place in one go during installation.

[0054] Furthermore, the two ends of the spring body are a first working end 423 and a second working end 424, respectively. The first working end 423 and the second working end 424 extend in the same direction, and both the first working end 423 and the second working end 424 abut against the side wall of the first folding body 1. By setting the first working end 423 and the second working end 424 in the same direction, the forces acting on the hinge shaft 5 and the first folding body 1 are balanced, ensuring the smoothness of the opening and closing process of the folding device. The middle position of the spring body is bent upward to form a U-shaped elastic arm, which is the second spring part 422. The U-shaped elastic arm independently provides a radial push force perpendicular to the hinge shaft, which is used to drive the second locking member 41 to move upward a small distance. Specifically, the U-shaped elastic arm is fitted on the sliding part 414 of the second locking member 41 and abuts against the lower surface of the connecting part 413. In the locked state, the connecting part 413 moves downward to apply downward pressure to the U-shaped elastic arm. It should also be further explained that the U-shaped elastic arm has a closed end 427, and the closed end 427 is located on the side of the sliding part 414 away from the first folding body 1. When the second locking member 41 moves outward under the action of the handle 31, the sliding part 414 drives the second spring part 422 to move outward through the closed end 427, and at the same time, the connection between the second spring part 422 and the first spring part 421 drives the first spring part 421 to twist.

[0055] For further details, please refer to [link / reference]. Figure 10 The spring body includes a first connecting section 425 and a second connecting section 426. The first connecting section 425 is wound around the outer periphery of the hinge shaft 5 and connected between the U-shaped elastic arm (second spring part 422) and the first actuating end 423. The second connecting section 426 is wound around the outer periphery of the hinge shaft 5 and connected between the U-shaped elastic arm (second spring part 422) and the second actuating end 424. The first connecting section 423 and the second connecting section 424 are the first spring part 421, and the first connecting section 423 and the second connecting section 424 are symmetrically arranged on both sides of the U-shaped elastic arm. When the locking device changes from the locked state to the unlocked state, the handle 31 unfolds outward and acts on the linkage part 411 through the pushing part 311 to make the second locking member 41 rotate outward. At this time, the second locking member 41 causes the first connecting section 425 and the second connecting section 426 to twist through the U-shaped elastic arm. After the external force disappears, the first connecting section 425 and the second connecting section 426 are reset under the action of the torsional force. The application achieves uniform stress distribution through the symmetrical arrangement of the first connecting segment 425 and the second connecting segment 426.

[0056] Furthermore, the second spring portion 422 is located above the first spring portion 411.

[0057] The elastic reset member 42 of this application is integrally formed by winding the same spring body, and realizes a dual function: it provides an upward reset force for the second locking member 41, and also provides a torsional reset force for it.

[0058] For further details, please refer to [link / reference]. Figures 4 to 6 The second limiting part 22 consists of two parallel first ear seats 221 formed on the outer side of the second folding body 2, with a groove 222 formed between the two first ear seats 221; the second locking member 41 includes a snap-fit ​​part 412 and a connecting part 413 connected to the lower end of the snap-fit ​​part 412; when the folding device is in the locked state, the lower surface of the snap-fit ​​part 412 engages with the upper surface of the first ear seats 221, and the connecting part 413 is at least partially accommodated in the groove 222. In the locked state, the lower surface of the snap-fit ​​part 412 simultaneously contacts the upper surfaces of the two first ear seats 221 to form a tight contact connection.

[0059] For further details, please refer to [link / reference]. Figure 7 The second locking member 41 also includes a sliding part 414 and a linkage part 411 connected in sequence to the lower end of the connecting part 413. The sliding part 414 is slidably disposed on the hinge shaft 5 in a vertical direction. The linkage part 411 is connected to the lower end of the sliding part 414 and is located below the hinge shaft 5. The hinge shaft 5 is provided with a sliding hole that matches the sliding part 414. The outer diameter of the linkage part 411 is larger than the inner diameter of the sliding hole. The sliding part 414 refers to the columnar component connected to the lower end of the connecting part 413. Specifically, it can be implemented with a cylindrical structure. Its outer diameter matches the sliding hole. The linkage part 411 refers to the enlarged end provided at the lower end of the sliding part 414. It can be implemented with a bolt of a special size. For example, a threaded hole is provided on the lower end face of the sliding part 414. The bolt is screwed into the threaded hole from below the hinge shaft 5 to realize the fixed connection between the linkage part 411 and the sliding part 414. The outer diameter of the linkage part 411 is larger than the outer diameter of the sliding hole to prevent the second locking member 41 from disengaging from the hinge shaft 5 during the movement.

[0060] For further details, please refer to [link / reference]. Figure 2 and Figure 9 The handle 31 is also provided with a pressing part 312 corresponding to the second locking member 41. When the folding device is in the locked state, the pressing part 312 abuts against the top of the second locking member 41, so that the lower surface of the locking part 412 presses against the upper surface of the first ear seat 221. The pressing part 312 refers to a rigid protrusion structure provided on the inner side of the handle 31. It is configured to contact the top of the second locking member 41 when the handle 31 is rotated to the vertical position, and press down on the second locking member 41, so that the second locking member 41 cooperates with the second limiting part 22 to lock. Specifically, when the handle 31 is rotated to the vertical position, the pressing part 312 and the contact surface of the top of the second locking member 41 make a rigid collision. At this time, the rotational kinetic energy of the handle 31 is converted into vertically downward mechanical pressure. This pressure is transmitted to the upper surface of the first ear seat 221 through the locking part 412, forcing the lower surface of the locking part 412 to form a surface contact and press against the first ear seat 221.

[0061] For further details, please refer to [link / reference]. Figure 5 and Figure 7 The second locking member 41 has a first step portion 415 formed on the side facing the first folding body 1, and a second step portion 11 is formed on the first folding body 1 at a position corresponding to the first step portion 415. When the folding device is unlocked, the first step portion 415 abuts against the second step portion 11 to restrict the vertical movement of the second locking member 41. When the folding device switches from the locked state to the unlocked state and the second folding body 2 is opened upward, the second locking member 41 is reset to the vertical state under the action of the elastic reset member 42. In this state, the lower surface of the first step portion 415 contacts the upper surface of the second step portion 11, forming mechanical interference, which restricts the vertical displacement of the second locking member 41 and ensures that the handle 31 will not be engaged with the second locking member 41 due to misoperation in the unlocked state.

[0062] For further details, please refer to [link / reference]. Figure 5 The upper surface of the second locking member 41 is an arc-shaped surface 416, and the lower surface of the second limiting part 22 is a guide slope 223 that is inclined upward toward the handle 31. When the handle 31 is operated to lock the folding device, the guide slope 223 of the second limiting part 22 contacts the arc-shaped surface 416 of the second locking member 41, and the guide slope 223 gradually pushes the second locking member 41 outward until the second folding body 2 aligns with the first folding body 1. Then, the second locking member 41 resets under the reset force to achieve the pre-locking of the second folding body 2 and the first folding body 1.

[0063] For further details, please refer to [link / reference]. Figure 8 The first limiting part 21 is a locking block fixed to the outside of the second folding body 2, and the first locking member 32 is a toggle hook rotatably connected to the handle 31. The toggle hook engages and locks with the locking block under the action of the return spring 33. When the handle 31 is rotated to the vertical position, the toggle hook engages with the locking block; when the lock is released, the operator manually presses the toggle hook, and the toggle hook rotates around the fulcrum to disengage from the locking block. At the same time, the return spring 33 accumulates elastic force. After the toggle hook is completely disengaged from the locking block, the toggle hook returns to the initial position under the force of the return spring 33.

[0064] The working principle of one embodiment provided in this application is as follows:

[0065] The process of the folding device transitioning from a locked to an unlocked state: The operator first moves the first locking member 32 to separate it from the first limiting part 21, thus releasing the first safety lock; then, the operator rotates the handle 31 downwards, causing the pressing part 312 on the handle 31 to disengage from the top of the second locking member 41. At this time, the second locking member 41 extends slightly upwards under the action of the elastic reset member 42, creating a gap between the locking part 412 of the second locking member 41 and the second limiting part 22, reserving space for subsequent rotation and unlocking. During this stage, the second safety lock remains in the locked state (see...). Figure 3 and Figure 4 ); Continue turning the handle 31 downwards to a near-horizontal position. The pushing part 311 on the handle 31 begins to contact and press against the linkage part 411 of the second locking member 41. This pressure drives the second locking member 41 to rotate outwards, causing its locking part 412 to completely disengage from the second limiting part 22, thereby releasing the second safety lock (see Figure 5 After the second safety lock is released, the second folding body 2 can be rotated upwards to separate it from the first folding body 1. After separation, the second locking member 41 automatically returns to a vertical position under the action of the elastic reset member 42; at the same time, its first step portion 415 abuts against the second step portion 11 on the first folding body 1 (see...). Figure 6 This forms a vertical limit, effectively preventing the handle 31 from accidentally snapping back onto the second locking member 41.

[0066] The process of the folding device changing from the unlocked state to the locked state is as follows: the second folding body 2 is rotated downwards, causing it to close towards the first folding body 1. During this process, the lower surface of the second limiting part 22 (such as the first ear seat) on the second folding body 2 will contact the upper surface of the second locking member 41 (see...). Figure 6 This forces the second locking member 41 to move outward to avoid obstruction. Once the second folding body 2 is fully closed, the second locking member 41 quickly returns to its original position under the action of the elastic reset member 42, and its locking portion 412 engages with the second limiting portion 22, achieving initial pre-locking (see...). Figure 3 Then, turn the handle 31 upwards. When the handle 31 is rotated to a near-vertical position, the downward pressing part 312 on it contacts the top of the second locking member 41 (see...). Figure 2 The handle 31 is rotated to the vertical position, and downward pressure is applied to make the lower surface of the locking part 412 of the second locking member 41 fit tightly against the upper surface of the second limiting part 22 (first ear seat), eliminating gaps and ensuring a secure lock. When the handle 31 is fully rotated to the vertical position, the first locking member 32 is engaged and locked with the first limiting part 21 under the action of the return spring 33. At this point, the first folding body 1 and the second folding body 2 are securely fixed by two independent and cooperative safety locks.

[0067] This utility model also provides a folding vehicle, including any of the above-mentioned folding devices. The folding vehicle provided in this application adopts all the technical solutions of all embodiments of the above-mentioned folding devices, and therefore has at least all the beneficial effects brought about by the technical solutions of the above-mentioned folding device embodiments, which will not be repeated here.

[0068] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A folding device, characterized in that, include: First fold body; The second folding body is rotatably connected to the first folding body, and the outer side of the second folding body is provided with a first limiting part and a second limiting part at vertical intervals; The first locking assembly includes a handle rotatably connected to the first folding body and a first locking member movably disposed on the handle. When the folding device is in a locked state, the handle is rotated to a vertical position and drives the first locking member to engage and lock with the first limiting part. The second locking assembly includes a second locking member rotatably connected to the first folding body and linked with the handle. When the folding device is in the locked state, the second locking member engages and locks with the second limiting part. When the handle is rotated from the locked state to the unlocked state, the handle drives the first locking member to disengage from the first limiting part, and at the same time, the second locking member is also disengaged from the second limiting part.

2. The folding device according to claim 1, characterized in that, The handle is rotatably connected to the first folding body via a hinge shaft, the second locking member is vertically connected to the hinge shaft and has a linkage part, and a pushing part is provided on the handle at a position corresponding to the linkage part; When the handle is rotated from the locked state to the unlocked state, the pushing part presses against the linkage part, causing the second locking member to rotate and release from the second limiting part.

3. The folding device according to claim 2, characterized in that, An elastic reset member is sleeved on the hinge shaft. One end of the elastic reset member acts on the first folding body, and the other end acts on the second locking member, providing the second locking member with a reset elastic force.

4. The folding device according to claim 3, characterized in that, The second locking member is movably disposed on the hinge shaft along the radial direction of the hinge shaft, and the elastic reset member includes a first spring portion fitted on the hinge shaft and a second spring portion fitted on the second locking member; The first spring acts on the first folding body to provide a restoring force toward the vertical position for the second locking member, and the second spring acts on the second locking member to provide a restoring force for the second locking member to extend upward away from the second limiting part.

5. The folding device according to claim 4, characterized in that, The first spring portion and the second spring portion are integrally formed by winding the same spring body.

6. The folding device according to claim 5, characterized in that, The two ends of the spring body are a first working end and a second working end, respectively. The first working end and the second working end extend in the same direction, and both the first working end and the second working end abut against the side wall of the first folding body.

7. The folding device according to claim 6, characterized in that, The spring body is bent upward at the middle position to form a U-shaped elastic arm, and the U-shaped elastic arm is the second spring part.

8. The folding device according to claim 7, characterized in that, The spring body includes a first connecting section and a second connecting section; the first connecting section is wound around the outer periphery of the hinge shaft and connected between the U-shaped elastic arm and the first working end; the second connecting section is wound around the outer periphery of the hinge shaft and connected between the U-shaped elastic arm and the second working end; the first connecting section and the second connecting section constitute the first spring portion.

9. The folding device according to claim 4, characterized in that, The second spring portion is located above the first spring portion.

10. The folding device according to claim 2, characterized in that, The second limiting part consists of two parallel first ear seats formed on the outer side of the second folding body, with a groove formed between the two first ear seats; the second locking member includes a snap-fit ​​part and a connecting part connected to the lower end of the snap-fit ​​part; When the folding device is in the locked state, the lower surface of the latching part engages with the upper surface of the first ear seat, and the connecting part is at least partially accommodated in the groove.

11. The folding device according to claim 10, characterized in that, The second locking member further includes a sliding part and a linkage part connected sequentially to the lower end of the connecting part. The sliding part is slidably disposed on the hinge shaft in a vertical direction. The linkage part is connected to the lower end of the sliding part and located below the hinge shaft. The hinge shaft is provided with a sliding hole adapted to the sliding part. The outer diameter of the linkage part is larger than the inner diameter of the sliding hole.

12. The folding device according to claim 1, characterized in that, The handle is also provided with a pressing part corresponding to the second locking member. When the folding device is in the locked state, the pressing part abuts against the top of the second locking member, so that the second locking member is locked with the second limiting part.

13. The folding device according to claim 1, characterized in that, The second locking member has a first step portion formed on the side facing the first folding body, and a second step portion is formed on the first folding body at a position corresponding to the first step portion; when the folding device is unlocked, the first step portion abuts against the second step portion to restrict the vertical movement of the second locking member.

14. The folding device according to claim 1, characterized in that, The upper surface of the second locking member is an arc-shaped surface, and the lower surface of the second limiting part is a guide slope that is inclined upward toward the handle.

15. The folding device according to claim 1, characterized in that, The first limiting part is a snap-fit ​​block fixed on the outside of the second folding body, and the first locking member is a toggle hook rotatably connected to the handle. The toggle hook engages and locks with the snap-fit ​​block under the action of the return spring.

16. A folding bicycle, characterized in that, Includes the folding device according to any one of claims 1-10.

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