A folding structure for a folding bicycle and a folding bicycle

Abstract

The application discloses a folding structure and a folding bicycle for the folding bicycle, and solves the problem that the folding structure is difficult to be effectively locked after the assembly gap of the folding structure is enlarged. The technical scheme for solving the problem mainly comprises a first connecting part and a second connecting part which are hingedly connected, and a lock catch structure is arranged between the first connecting part and the second connecting part. The lock catch structure comprises a locking piece and a lock hole. The locking piece has an unlocking position and a locking position. An adjusting screw is threadedly connected to the end face of the first connecting part or the second connecting part. In the locking position, the adjusting screw and the locking piece generate action forces in opposite directions on the second connecting part, and the adjusting screw and the locking piece clamp the second connecting part to lock the second connecting part. The application is mainly used for making the locking of the lock catch structure more firm and reliable.

Description

[0001] This application is a divisional application. The original application was filed on February 1, 2024, with the application number 2024101439217 and the application title "A Folding Structure for a Folding Bicycle and a Folding Bicycle". Technical Field

[0002] This invention demonstrates a folding structure for a folding bicycle and a folding bicycle, belonging to the field of folding bicycle technology. Background Technology

[0003] Folding bicycles have a folding function, which reduces the space occupied by the bicycle after folding, making them easy to carry and store. When in use, their performance and parameters are no less than those of ordinary non-folding bicycles. Therefore, folding bicycles are widely favored by consumers. The key to measuring the quality of a folding bicycle lies in its folding structure.

[0004] In the prior art, the folding structure of a bicycle typically includes a first folding component, a second folding component, and a locking component. The first folding component and the second folding component are hinged to each other, and the locking component can unlock and lock the first folding component and the second folding component. In the unlocked state, the bicycle can be stored; in the locked state, the bicycle remains unfolded and can be ridden.

[0005] However, the folding structure itself has assembly gaps, which will increase after long-term use. This will cause the gap between the first and second folding parts to increase when locked, making it difficult for the locking mechanism to lock tightly. The first and second folding parts will wobble when locked, posing a risk of automatic unlocking. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that the folding structure is difficult to lock effectively due to the increased assembly gap. To this end, a folding structure and a folding bicycle are provided. By adjusting the screw to fill the gap between the first connecting part and the second connecting part, the locking of the locking structure is made more secure and reliable.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A folding structure for a folding bicycle includes a first connecting part and a second connecting part hinged to each other. A locking structure is provided between the first connecting part and the second connecting part. The locking structure includes a locking member threadedly connected to the first connecting part and a locking hole provided in the second connecting part. The locking member has an unlocking position that can pass through the locking hole to disengage from the second connecting part, and a locking position that is limited and engaged with the side of the peripheral wall of the locking hole away from the first connecting part. An adjusting screw is threadedly connected to the end face of the first connecting part or the second connecting part. In the locked position, the adjusting screw and the locking member respectively exert opposite forces on the second connecting part, and the adjusting screw and the locking member clamp the second connecting part to lock the second connecting part.

[0009] The beneficial effects of using the present invention are:

[0010] The locking member described in this invention is threadedly connected to the first connecting part. The locking member switches between the unlocked and locked positions by rotation. The threaded engagement between the locking member and the first connecting part increases the resistance to rotation of the locking member, reduces the possibility of the locking member rotating arbitrarily, effectively prevents the locking member from automatically unlocking, improves the connection stability between the locking member and the lock hole, and makes the locking of the first and second connecting parts more secure and reliable, with strong shock resistance, improving the user's riding safety. Secondly, when the locking member is in the locked position, the locking member and the lock hole are limited to the side away from the first connecting part. During the process of rotating from the unlocked position to the locked position, the locking member moves towards the first connecting part, which can effectively reduce the gap between the locking member and the lock hole, allowing the locking member to keep close to the lock hole. The limited engagement between the locking member and the lock hole is tighter, improving the connection stability of the first and second connecting parts, reducing the shaking amplitude of the first and second connecting parts in the locked state, which is conducive to improving the overall stability of the vehicle and giving the vehicle a better riding experience.

[0011] Furthermore, after prolonged use, a gap may develop between the first and second connecting parts in the locked state, leading to unstable locking and potential wobbling. In this case, the adjusting screw can be turned. The end of the adjusting screw protrudes from the end face of either the first or second connecting part. When the first and second connecting parts are locked, the adjusting screw exerts a force on the end face of the second connecting part. This creates opposing forces between the adjusting screw and the locking element, clamping the second connecting part and reducing the likelihood of wobbling in the locked state, thus making the locking of the first and second connecting parts more secure and reliable. Additionally, the force exerted by the adjusting screw on the second connecting part ensures a tight fit between the locking element and the lock hole, improving the stability of the fit and reducing the possibility of the locking element detaching from the latch. This makes the locking of the folding structure more stable and improves the overall stability of the vehicle structure. Moreover, adjusting the adjusting screw is simpler, requiring no special tools or disassembly of the folding structure, allowing users to adjust it themselves and effectively extending the lifespan of the folding structure.

[0012] Preferably, the adjusting screw is disposed on the end face of the first connecting part, and the first connecting part is provided with two adjusting screws, which are respectively located on both sides of the locking member. In the locked position, the adjusting screw can replace the end face of the first connecting part to abut against the second connecting part. By adopting the aforementioned technical solution, the contact area between the adjusting screw and the second connecting part can be increased by using two adjusting screws, making the positioning of the adjusting screw and the second connecting part more stable. Furthermore, placing the adjusting screws on both sides of the locking member can make the force on the second connecting part more balanced, reducing the possibility of the second connecting part becoming misaligned.

[0013] Preferably, the first connecting part is provided with a positioning block and an elastic element acting on the positioning block. The locking element is provided with a positioning groove for the positioning block to be embedded in. When the locking element is in the locked position, the positioning block cooperates with the positioning groove under the force of the elastic element to limit the locking element in a circumferential direction. By adopting the aforementioned technical solution, when the locking member is in the locked position, the positioning block is embedded into the positioning groove and forms a limiting fit with the positioning groove, thereby increasing the external force required for the locking member to rotate, reducing the possibility of the locking member rotating arbitrarily, improving the positioning stability of the locking member, and enabling the locking member to be stably kept in the locked position. This also improves the connection stability of the first and second connecting parts, making the overall structure of the bicycle more robust and reliable after locking, and improving the overall riding safety of the bicycle. In addition, the positioning block can add an anti-loosening structure to the buckle structure, limiting it from multiple dimensions to prevent the buckle structure from loosening due to factors such as load, vibration, and accidental contact. This allows the frame to maintain structural stability during riding, meeting riding requirements, especially when using battery assistance, ensuring safety during high-speed riding. Furthermore, the cooperation between the positioning groove and the positioning block allows the user to clearly feel that the locking bar has reached the locked position, allowing the user to use it with confidence and improving the user experience.

[0014] Preferably, the first connecting part is provided with a sliding groove for the positioning block to slide. One end of the sliding groove passes through the first connecting part and is threadedly connected to an adjusting member. The two ends of the elastic member abut against the adjusting member and the positioning block, respectively. Using the aforementioned technical solution, the compression state of the elastic member can be adjusted by the adjusting member, thereby changing the force exerted by the positioning block on the positioning groove. After prolonged use, when the resistance generated by the positioning block and positioning groove decreases, the elastic member can be further compressed by the adjusting member to increase the elastic force of the elastic member on the positioning block, thus increasing the resistance generated by the positioning block and positioning groove. Conversely, when the resistance to the rotation of the locking member is large, the elastic member can be extended by the adjusting member to reduce the elastic force of the elastic member on the positioning block, thereby reducing the resistance generated by the positioning block and positioning groove, reducing the external force required to unlock the locking member, making unlocking easier and more convenient for the user.

[0015] Preferably, the locking element includes a locking rod and a handle, with the handle engaging with the locking rod to prevent rotation, and a positioning groove disposed on the surface of the handle. Using the aforementioned technical solution, the locking rod can be controlled to rotate by turning the handle, allowing it to move between the unlocked and locked positions. The handle provides a better force application position for the user, making the rotation of the locking element more convenient and effortless, thus improving the user experience. Furthermore, by placing the positioning groove on the handle, the positioning block acts directly on the handle, reducing the number of force transmissions and energy consumption, making the rotation of the handle even more effortless and convenient for the user.

[0016] Preferably, the end of the locking rod is provided with a locking head. In the unlocked position, the projection of the locking head on the second connecting part is entirely within the lock hole. In the locked position, the projection of the locking head on the second connecting part is located outside the lock hole to achieve a limiting fit. By employing the aforementioned technical solution, the limiting fit is formed by the locking head abutting against the peripheral wall of the lock hole, which increases the contact area between the locking rod and the lock hole, making the limiting fit between the locking rod and the lock hole more secure and stable. Furthermore, the inclined surface can guide the locking head to rotate to the peripheral wall of the lock hole, reducing the possibility of the lock hole obstructing the locking head, allowing the locking rod to rotate stably to the locked position. Secondly, the inclined surface can gradually increase the locking force of the locking rod, further improving the stability of the fit between the locking rod and the lock hole, reducing the possibility of the locking structure automatically loosening, and improving riding safety.

[0017] Preferably, the edge of the lock hole away from the first connecting part is provided with a limiting groove, and the bottom of the limiting groove forms a locking surface. In the locked position, the projection of the lock head on the second connecting part is located within the locking surface. Using the aforementioned technical solution, when the lock head engages with the locking surface, the lock head is in the limiting groove, and the limiting surface can limit the lock head, reducing the radial sway of the lock head and further improving the connection stability of the first and second connecting parts. This ensures the frame remains stable during riding and improves riding safety.

[0018] Preferably, the first connecting part and the second connecting part are provided with a groove and a boss on the opposite side. When the locking member is in the locked position, the boss extends into the groove to achieve a limiting fit. Using the aforementioned technical solution, when the first connecting part and the second connecting part are locked, the groove and the boss cooperate to reduce the swaying amplitude of the first connecting part and the second connecting part, further improving the connection stability of the first connecting part and the second connecting part, allowing the frame to maintain structural stability during riding and improving riding safety.

[0019] The present invention also discloses a folding bicycle, including a first frame and a second frame, wherein a folding structure is provided between the first frame and the second frame, the folding structure being a folding structure for a folding bicycle as described in any of the preceding claims.

[0020] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0021] The invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a folding structure for a folding bicycle according to the present invention;

[0023] Figure 2This is a schematic diagram of the structure of a folding structure for a folding bicycle according to the present invention after the first connecting part and the second connecting part are locked.

[0024] Figure 3 This is a rear view of a folding structure for a folding bicycle according to the present invention.

[0025] Figure 4 This is an exploded view of a folding structure for a folding bicycle according to the present invention.

[0026] Figure 5 This is a schematic diagram of the second connecting part in a folding structure for a folding bicycle according to the present invention;

[0027] Figure 6 This is a schematic diagram of the first connecting part in a folding structure for a folding bicycle according to the present invention;

[0028] Figure 7 This is a schematic diagram of the hinge plate in a folding structure for a folding bicycle according to the present invention.

[0029] Figure 8 This is a cross-sectional view of the folding structure of a folding bicycle of the present invention in the locked position.

[0030] Figure 9 This is a schematic diagram of the folding structure of a folding bicycle according to the present invention when it is in the unlocked position;

[0031] Figure 10 This is a cross-sectional view of the folding structure of a folding bicycle according to the present invention when it is in the unlocked position.

[0032] Figure 11 This is a schematic diagram of the folded structure of a folding structure for a folding bicycle according to the present invention.

[0033] Figure 12 This is a cross-sectional view of a folding structure for a folding bicycle according to the present invention after folding.

[0034] Figure 13 for Figure 12 A magnified view of part A in the middle;

[0035] Figure 14 This is a schematic diagram of the locking structure in the locked position in a folding structure for a folding bicycle according to the present invention.

[0036] Figure 15 This is a schematic diagram of the locking structure in the unlocked position in a folding structure for a folding bicycle according to the present invention.

[0037] Figure 16This is a schematic diagram of the structure of a folding bicycle according to the present invention;

[0038] Figure 17 for Figure 16 A magnified view of part B in the middle section.

[0039] Reference numerals: 1. Folding structure; 11. First connecting part; 111. Receiving groove; 112. Groove; 113. Slide groove; 114. Locking element; 115. Locking hole; 12. Second connecting part; 121. Locking hole; 1211. Limiting groove; 1212. Locking surface; 122. Boss; 13. Mounting part; 14. Threading hole; 15. Clearance groove; 151. First limiting surface; 152. Second limiting surface; 153. Smooth curved surface; 16. Shaft hole; 17. Rotating shaft; 171. Extension 1. End; 172. Stepped surface; 173. Rotation axis; 18. End cap; 19. Adjusting screw; 2. Locking structure; 21. Locking rod; 211. Lock head; 2111. Abutting surface; 2112. Inclined surface; 212. Anti-rotation surface; 22. Handle; 221. Positioning groove; 222. Pin hole; 23. Threaded sleeve; 3. Hinge plate; 31. Hinge end; 32. Through hole; 41. Positioning block; 42. Elastic element; 43. Adjusting element; 5. Bicycle; 51. First frame; 52. Second frame. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Example 1:

[0044] like Figures 1 to 15 As shown in the figure, this embodiment illustrates a folding structure for a folding bicycle, including a first connecting part 11, a second connecting part 12, and a hinge plate 3. The first connecting part 11 and the second connecting part 12 are respectively hinged to both sides of the hinge plate 3. A locking structure 2 is provided between the first connecting part 11 and the second connecting part 12. The locking structure 2 includes a locking member threadedly connected to the first connecting part 11 and a locking hole 121 provided in the second connecting part 12. The locking member has an unlocking position that can pass through the locking hole 121 to disengage from the second connecting part 12, and a locking position that is limited and engaged with the side of the peripheral wall of the locking hole 121 away from the first connecting part 11. Rotating the locking member can switch it between the locking position and the unlocking position. When the locking member is switched from the unlocking position to the locking position, the locking member moves toward the first connecting part 11 to press the second connecting part 12.

[0045] In this embodiment, when the locking member is in the unlocked position, it can freely pass through the lock hole 121. The first connecting part 11 and the second connecting part 12 can rotate relative to each other, so that the first connecting part 11 and the second connecting part 12 can fold together. The folding of the locking structure 2 can effectively reduce the overall volume of the bicycle 5, which is beneficial for carrying and storing the bicycle 5. When the locking member passes through the lock hole 121, by rotating the locking member, the locking member can be rotated from the unlocked position to the locked position. At this time, the locking member forms a limiting fit with the peripheral wall of the lock hole 121, thereby locking the first connecting part 11 and the second connecting part 12, keeping the frame of the bicycle 5 stable, so that the user can ride the bicycle 5.

[0046] Furthermore, the locking element is threadedly connected to the first connecting part 11. The locking element switches between the unlocked and locked positions by rotation. The threaded engagement between the locking element and the first connecting part 11 increases the resistance to rotation, reducing the possibility of arbitrary rotation and effectively preventing automatic unlocking. This improves the connection stability between the locking element and the lock hole 121, making the locking of the first connecting part 11 and the second connecting part 12 more secure and reliable, with strong shock resistance, thus improving the user's riding safety. Secondly, when the locking element is in the locked position, the locking element and the lock... The locking member moves toward the first connecting part 11 during the process of rotating from the unlocked position to the locked position. This effectively reduces the gap between the locking member and the locking hole 121, allowing the locking member to remain in close contact with the locking hole 121. The locking member and the locking hole 121 are more tightly fitted, which improves the connection stability of the first connecting part 11 and the second connecting part 12, reduces the shaking amplitude of the first connecting part 11 and the second connecting part 12 in the locked state, and helps to improve the stability of the whole vehicle, giving the whole vehicle a better riding experience.

[0047] Specifically, in this embodiment, the end face of the first connecting part 11 or the second connecting part 12 is threaded with an adjusting screw 19. In the locked position, the adjusting screw 19 and the locking member exert opposite forces on the second connecting part 12, and the adjusting screw 19 and the locking member clamp the second connecting part 12 to lock the second connecting part 12.

[0048] Furthermore, after prolonged use, a gap may exist between the first connecting part 11 and the second connecting part 12 in the locked state, leading to instability in the locking of the first connecting part 11 and the second connecting part 12. This can cause the first connecting part 11 and the second connecting part 12 to still wobble even in the locked state. In this case, the adjusting screw 19 can be turned. The end of the adjusting screw 19 will protrude from the end face of the first connecting part 11 or the second connecting part 12. When the first connecting part 11 and the second connecting part 12 are in the locked position, the adjusting screw 19 will exert a force on the end face of the second connecting part 12. At this time, the adjusting screw 19 and the locking member exert opposite forces on the second connecting part 12, thereby ensuring the stability of the second connecting part 12. The connecting part 12 forms a clamp, reducing the possibility of the second connecting part 12 shaking in the locked state, making the locking of the first connecting part 11 and the second connecting part 12 more secure and reliable; in addition, after the adjusting screw 19 exerts force on the second connecting part 12, it can keep the locking member and the lock hole 121 in close contact, improving the stability of the cooperation between the locking member and the lock hole 121, reducing the possibility of the locking member arbitrarily disengaging from the lock, making the locking of the folding structure 1 more stable, and improving the stability of the entire vehicle structure; secondly, the adjustment of the adjusting screw 19 is simpler, requiring no special tools or disassembly of the folding structure 1, and the user can complete the adjustment independently, which can effectively improve the service life of the folding structure 1.

[0049] Specifically, in this embodiment, the adjusting screw 19 is disposed on the end face of the first connecting part 11, and the first connecting part 11 is provided with two adjusting screws 19, which are respectively located on both sides of the locking member. In the locked position, the adjusting screw 19 can replace the end face of the first connecting part 11 to abut against the second connecting part 12. By using two adjusting screws 19, the contact area between the adjusting screw 19 and the second connecting part 12 can be increased, making the positioning of the adjusting screw 19 and the second connecting part 12 more stable. By placing the adjusting screw 19 on both sides of the locking member, the force on the second connecting part 12 can be more balanced, reducing the possibility of the second connecting part 12 becoming skewed. Of course, it can be understood that in other embodiments, the adjusting screw 19 can also be disposed on the end face of the second connecting part 12.

[0050] like Figure 2 , Figure 8 and Figure 9As shown, the locking component in this embodiment includes a locking rod 21 and a handle 22. The handle 22 is anti-rotationally engaged with the locking rod 21. The end of the locking rod 21 is provided with a lock head 211. The lock hole 121 is provided with a locking surface 1212 on the side away from the first connecting part 11. The lock head 211 is generally in the shape of a straight line. When the locking component is in the unlocked position, the lock head 211 is aligned with the lock hole 121 and can freely pass through the lock hole 121, so that the first connecting part 11 and the second connecting part 12 can rotate around the hinge plate 3, thereby realizing the mutual folding of the first connecting part 11 and the second connecting part 12. When the first connecting part 11 and the second connecting part 12 abut against each other on opposite sides, the lock head 211 passes through the lock hole 121 and drives the lock rod 21 to rotate to the locked position through the handle 22, so that the lock head 211 abuts against the locking surface 1212, thus completing the locking of the first connecting part 11 and the second connecting part 12. In this embodiment, the lock rod 21 can be controlled to rotate by rotating the handle 22, so that the lock rod 21 can rotate between the unlocked position and the locked position. The handle 22 can provide the user with a better force application position, making the rotation of the locking part more convenient and effortless, and improving the user experience.

[0051] like Figure 2 As shown, in this embodiment, when the locking member is in the unlocked position, the lock head 211 is in a horizontal state; when the locking member is in the locked position, the lock head 211 is in a vertical state. That is, the locking member switches between the unlocked and locked positions by rotating 90 degrees, keeping the unlocked and locked positions at the maximum rotation angle. This reduces the possibility of the locking member rotating to the unlocked position due to external factors such as vibration or accidental contact, and allows the locking member to be stably kept in the locked position. The edge of the lock hole 121 away from the first connecting part 11 is provided with a limiting groove 1211, and the locking surface 1212 is located at the bottom of the limiting groove 1211. When the lock head 211 is engaged with the locking surface 1212, the lock head 211 is in the limiting groove 1211. The limiting surface can limit the lock head 211, reduce the radial sway of the lock head 211, and further improve the connection stability of the first connecting part 11 and the second connecting part 12, so that the frame remains stable when riding and improves the safety of the user when riding.

[0052] like Figure 14 and Figure 15As shown, in this embodiment, the lock head 211 is located at the end of the lock rod 21. The lock head 211 extends radially to both sides of the lock rod 21. The side of the lock head 211 facing the lock rod 21 has an abutment surface 2111 that engages with the locking surface 1212. Inclined surfaces 2112 are provided on both sides of the abutment surface 2111. Correspondingly, locking surfaces 1212 are provided on both the upper and lower sides of the lock hole 121. When the locking member is in the locked position, the lock head 211 rotates into the limiting groove 1211, and the abutment surface 2111 abuts against the locking surface 1212 to form a limiting engagement. The lock head 211 extends to both sides of the lock rod 21, effectively increasing the contact area between the lock head 211 and the locking surface 1212, making the force on the lock head 211 more even. The inclined surface 2112 improves the limiting stability of the lock head 211 and the locking surface 1212. Secondly, by abutting against the locking surface 1212 to form a limiting fit, the contact area between the lock rod 21 and the lock hole 121 can be increased, making the limiting fit between the lock rod 21 and the lock hole 121 more secure and stable. In addition, the inclined surface 2112 can guide the lock head 211 to rotate to the locking surface 1212, reducing the possibility that the lock hole 121 will obstruct the lock head 211, so that the lock rod 21 can rotate stably to the locked position. Furthermore, the inclined surface 2112 can gradually increase the locking force of the lock rod 21, further improving the stability of the fit between the lock rod 21 and the lock hole 121, reducing the possibility of the locking structure 2 automatically loosening, and improving the safety of riding.

[0053] like Figure 8 and Figure 14 As shown, in this embodiment, the first connecting part 11 is provided with a mounting hole for installing the locking rod 21. A threaded sleeve 23 is fitted on the outer surface of the locking rod 21. The inner surface of the threaded sleeve 23 is threadedly connected to the locking rod 21, and the outer surface of the threaded sleeve 23 is threadedly connected to the mounting hole. The threaded sleeve 23 is located at the end of the mounting hole. Since the locking rod 21 is threadedly connected to the first connecting part 11, the position of the locking rod 21 after installation may not match the lock hole 121. The locking rod 21 is installed by the threaded sleeve 23. The rotation of the threaded sleeve 23 can adjust the position of the locking rod 21, so that the locking rod 21 can stably pass through the lock hole 121 when it is in the unlocked position and abut against the locking surface 1212 when it is in the locked position. This makes it convenient to adjust the locking rod 21 and reduces the difficulty of installing the locking rod 21.

[0054] like Figure 8As shown, to prevent the threaded sleeve 23 from rotating with the locking rod 21, the first connecting part 11 in this embodiment is provided with a locking hole 115. One end of the locking hole 115 passes through the first connecting part 11, and the other end communicates with the mounting hole. A locking member 114 is internally threaded into the locking hole 115. One end of the locking member 114 extends into the mounting hole and abuts against the threaded sleeve 23. The locking member 114 can compress the threaded sleeve 23, keeping the threaded sleeve 23 tightly against the mounting hole, increasing the contact area between the threaded sleeve 23 and the mounting hole, reducing the possibility of the threaded sleeve 23 rotating, preventing the rotation of the locking rod 21 from causing the threaded sleeve 23 to rotate, and improving the installation stability of the threaded sleeve 23. In addition, under the action of the locking member 114, the contact area between the external thread of the threaded sleeve 23 and the mounting hole can be reduced. The clearance between the threads in the mounting hole reduces the sway of the threaded sleeve 23 in the axial direction of the locking rod 21, further improving the installation stability of the threaded sleeve 23 and making the fit between the locking rod 21 and the locking hole 121 more secure and reliable. Secondly, the locking member 114 is threadedly connected to the locking hole 115, enabling stepless adjustment of the locking member 114. This allows the locking member 114 to maintain an appropriate compressive force on the threaded sleeve 23, preventing damage to the threaded sleeve 23 due to excessive compressive force or rotation due to insufficient compressive force. Furthermore, when the threaded sleeve 23 needs adjustment, it can be rotated by moving the locking member 114 away from the threaded sleeve 23, making the position adjustment of the locking rod 21 simpler and more convenient.

[0055] like Figure 1 and Figure 9 As shown, in this embodiment, the surface of the first connecting part 11 is provided with a receiving groove 111 for accommodating the handle 22. When the locking member is in the unlocked position, the handle 22 is partially exposed in the receiving groove 111. When the locking member is in the locked position, the surface of the handle 22 is not higher than the opening of the receiving groove 111. By rotating the handle 22, the locking rod 21 can be controlled to rotate, so that the locking rod 21 can rotate between the unlocked position and the locked position. The handle 22 can provide the user with a better force application position, making the rotation of the locking member more convenient and effortless, and improving the user experience. In addition, the receiving groove 111 can make the outer surface of the first connecting part 11 relatively flat in the locked state, which can improve the overall appearance of the vehicle and prevent the user from accidentally touching or bumping the handle 22 during riding, thereby reducing the possibility of the user being injured by the handle 22. At the same time, it can also prevent the handle 22 from rotating to the unlocked position due to accidental bumps, ensuring the structural stability of the lock buckle structure 2 during riding, which is conducive to improving riding safety.

[0056] like Figure 9 and Figure 14As shown, in order to keep the handle 22 and the locking rod 21 rotating synchronously, the handle 22 in this embodiment has a through hole for the locking rod 21 to pass through. A portion of the locking rod 21 extends into the through hole, and the outer surface of this portion has an anti-rotation surface 212. The outer surface of the handle 22 has several pin holes 222 communicating with the through hole, and the axial direction of the pin holes 222 is perpendicular to the axial direction of the through hole. By inserting a pin into the pin hole 222 and making the pin abut against the anti-rotation surface 212, the anti-rotation engagement between the handle 22 and the locking rod 21 can be achieved. In addition, in this embodiment, the pin holes 222 are exposed to the outside when the handle 22 is in the unlocked position. When the handle 22 controls the locking rod 21 to rotate to the locked position, the pin hole 222 is hidden in the receiving groove 111. During the installation of the locking rod 21 and the handle 22, the threaded sleeve 23 is first fitted onto the outer surface of the locking rod 21, and then the locking rod 21 is installed into the mounting hole. At the same time, the tail end of the locking rod 21 is inserted into the through hole of the handle 22. The locking rod 21 is adjusted to the unlocked position through the threaded sleeve 23, and the handle 22 is also rotated to the unlocked position. Then the pin is installed into the pin hole 222, so that the pin and the anti-rotation surface 212 of the locking rod 21 are kept in abutting, thus completing the connection between the handle 22 and the locking rod 21.

[0057] like Figure 8 , Figure 10 , 14 and Figure 15 As shown, in this embodiment, the first connecting part 11 is provided with a positioning block 41 and an elastic member 42 acting on the positioning block 41. The locking member is provided with a positioning groove 221 for the positioning block 41 to be inserted. When the locking member is in the locked position, the positioning block 41 cooperates with the positioning groove 221 to increase the resistance to the rotation of the locking member. When the locking member is in the locked position, the positioning block 41 is inserted into the positioning groove 221 and cooperates with the positioning groove 221, thereby increasing the external force required for the rotation of the locking member, reducing the possibility of the locking member rotating arbitrarily, improving the positioning stability of the locking member, and enabling the locking member to be stably kept in the locked position, thereby improving the first connecting part 11 and the second connecting part 12. The connection stability makes the overall structure of the bicycle 5 more robust and reliable after locking, improving the overall riding safety. In addition, the positioning block 41 can add an anti-loosening structure to the locking structure 2, limiting it from multiple dimensions to prevent the locking structure 2 from loosening due to factors such as load, vibration, and accidental contact. This ensures that the frame can maintain structural stability during riding and meet riding requirements, especially when using battery assistance, ensuring safety during high-speed riding. Secondly, the cooperation between the positioning groove 221 and the positioning block 41 allows the user to clearly feel that the locking bar 21 has reached the locking position, giving the user peace of mind and improving the user experience.

[0058] In this embodiment, the first connecting part 11 is provided with a sliding groove 113 for the positioning block 41 to slide. One end of the sliding groove 113 passes through the first connecting part 11 and is threadedly connected to an adjusting member 43. The two ends of the elastic member 42 abut against the adjusting member 43 and the positioning block 41 respectively. The compression state of the elastic member 42 can be adjusted by the adjusting member 43, thereby changing the force of the positioning block 41 on the positioning groove 221. After long-term use, when the resistance generated by the positioning block 41 and the positioning groove 221 decreases, the elastic member 42 can be further compressed by the adjusting member 43 to increase the elastic force of the elastic member 42 on the positioning block 41, thereby increasing the resistance generated by the positioning block 41 and the positioning groove 221. When the resistance of the locking member rotation is large, the elastic member 42 can be extended by the adjusting member 43 to reduce the elastic force of the elastic member 42 on the positioning block 41, thereby reducing the resistance generated by the positioning block 41 and the positioning groove 221, reducing the external force required to unlock the locking member, making it easier and more convenient for the user to unlock.

[0059] To make the rotation of the handle 22 easier, the positioning groove 221 described in this embodiment is provided on the surface of the handle 22. Furthermore, guide surfaces are provided on both sides of the positioning groove 221 to facilitate the disengagement of the positioning block 41 from the positioning groove 221. The positioning block 41 acts radially towards the locking rod 21, positioning the groove 221 at the handle 22. This allows the positioning block 41 to act directly on the handle 22, reducing the number of force transmissions and energy consumption, making the rotation of the handle 22 easier for the user. Similarly, the guide surfaces can guide the positioning block 41 out of the positioning groove 221, preventing the positioning block 41 from jamming with the positioning groove 221 and thus preventing the handle 22 from rotating normally. Additionally, the radial action of the positioning block 41 towards the positioning groove 221 along the locking rod 21 also reduces the possibility of jamming, thereby ensuring the normal rotation of the handle 22.

[0060] like Figure 1 and Figure 9 As shown, in this embodiment, the first connecting part 11 and the second connecting part 12 are provided with a groove 112 and a boss 122 that mutually limit and cooperate on opposite sides. The groove 112 is provided on the end face of the first connecting part 11, and the boss 122 is provided on the end face of the second connecting part 12. When the first connecting part 11 and the second connecting part 12 are in the locked position, the boss 122 is embedded in the groove 112. At this time, the groove 112 and the boss 122 cooperate in the vertical direction of the locking member to form a limit, further reducing the shaking amplitude of the first connecting part 11 and the second connecting part 12, further improving the connection stability of the first connecting part 11 and the second connecting part 12, so that the frame can maintain structural stability when riding and improve riding safety.

[0061] like Figure 3 , Figure 4 , Figure 11and Figure 12 As shown, in this embodiment, the hinge plate 3 has hinge ends 31 on both sides and is hinged to the first connecting part 11 and the second connecting part 12 respectively. The side walls of the first connecting part 11 and the second connecting part 12 are provided with relief grooves 15 to accommodate the hinge ends 31. When the ends of the first connecting part 11 and the second connecting part 12 abut against each other, they are in the open position. At this time, the locking rod 21 passes through the lock hole 121. By rotating the locking rod 21 from the unlocked position to the locked position, the first connecting part 11 and the second connecting part 12 can be locked. The first connecting part 11 and the second connecting part 12 rotate around the hinge ends 31 respectively, and the side walls of the first connecting part 11 and the second connecting part 12 move closer to each other, thereby completing the folding of the first connecting part 11 and the second connecting part 12. At this time, the first connecting part 11 and the second connecting part 12 are in the folded position.

[0062] In this embodiment, when the first connecting portion 11 and the second connecting portion 12 are in the folded position, the hinge ends 31 on both sides of the hinge plate 3 are respectively located in the clearance grooves 15 of the first connecting portion 11 and the second connecting portion 12. This can effectively reduce the obstruction formed by the hinge plate 3 on the fit of the first connecting portion 11 and the second connecting portion 12, effectively reduce the gap between the first connecting portion 11 and the second connecting portion 12, and at the same time, by reducing the distance between the two hinge ends 31, the first connecting portion 11 and the second connecting portion 12 can be brought as close to each other as possible, further reducing the overall vehicle volume after folding, making the vehicle easier to store and carry; in addition, the first connecting portion 11 and the second connecting portion 12... With part 12 in the open position and the hinge plate 3 in the clearance groove 15, the folding structure 1 can be kept flat, improving the overall appearance of the vehicle. It can also prevent the user from accidentally touching or bumping into the hinge plate 3 during riding, thus avoiding the possibility of the user being injured by the hinge plate 3. Secondly, the first connecting part 11 and the second connecting part 12 rotate around different pivots 17, which can keep the side walls of the first connecting part 11 and the second connecting part 12 parallel or even close after folding. This can greatly reduce the gap between the first connecting part 11 and the second connecting part 12, minimize the overall size of the folded vehicle, and make the vehicle easier to store and carry.

[0063] like Figure 4As shown, in this embodiment, both the first connecting part 11 and the second connecting part 12 are hinged to the hinge end 31 via a rotating shaft 17. The clearance groove 15 is provided with a shaft hole 16 for mounting the rotating shaft 17, and the hinge end 31 is provided with a through hole 32 for the rotating shaft 17 to pass through. The lower end of the shaft hole 16 passes through either the first connecting part 11 or the second connecting part 12, and an end cap 18 is threaded onto the lower end of the shaft hole 16. The end cap 18 can prevent the rotating shaft 17 from disengaging from the shaft hole 16, thereby improving the connection between the first connecting part 11, the second connecting part 12, and the hinge plate 3. Stability; In addition, the first connecting part 11 and the second connecting part 12 will generate a circumferential rotational force on the rotating shaft 17 during rotation. The end cover 18 and the rotating shaft 17 are set separately, which can effectively reduce the circumferential rotational force on the end cover 18, reduce the possibility of the end cover 18 automatically disengaging from the shaft hole 16, and improve the connection stability between the end cover 18 and the shaft hole 16; Secondly, setting the end cover 18 at the lower end of the shaft hole 16 can prevent the shaft hole 16 from being directly exposed in the field of vision, making the shape of the folding structure 1 more complete and improving the aesthetics of the folding structure 1.

[0064] In this embodiment, the end of the rotating shaft 17 furthest from the end cap 18 is provided with an extension end 171. The diameter of the extension end 171 is smaller than the diameter of the rotating shaft 17. A stepped surface 172 is formed at the connection between the extension end 171 and the rotating shaft 17. The stepped surface 172 abuts against the end of the shaft hole 16. The upper end of the rotating shaft 17 is limited by the stepped surface 172, and the lower end of the rotating shaft 17 is limited by the end cap 18. This reduces the possibility of the rotating shaft 17 shaking and improves the connection stability of the first connecting part 11, the second connecting part 12, and the hinge plate 3, making the rotation of the first connecting part 11 and the second connecting part 12 smoother and more stable. Of course, it is understood that in other embodiments, the end cap 18 can also be an integral structure with the rotating shaft 17. The end cap 18 and the rotating shaft 17 are integrally formed, which can effectively reduce the manufacturing difficulty and manufacturing cost of the rotating shaft 17.

[0065] like Figure 5 and Figure 6 As shown, the clearance groove 15 in this embodiment has a first limiting surface 151 and a second limiting surface 152. When it is in the folded position, the two first limiting surfaces 151 are arranged opposite to each other, and when it is in the unfolded position, the two second limiting surfaces 152 are arranged opposite to each other.

[0066] like Figure 13As shown, in this embodiment, the distance between the first limiting surface 151 and the side wall is H, the hinge end 31 has a rotation axis 173, the distance between the rotation axis 173 and the outer periphery of the hinge end 31 is R, and R≤H / 2. When the first connecting part 11 and the second connecting part 12 are in the open position, the entire hinge end 31 is in the receiving groove 111, which can prevent the hinge plate 3 from protruding from the side wall of the first connecting part 11 and the second connecting part 12, thereby maintaining the flatness of the shape of the first connecting part 11 and the second connecting part 12, improving the aesthetic appearance of the whole vehicle, and also preventing the user from accidentally touching or bumping into the hinge plate 3 during riding, thereby avoiding the possibility of the user being injured by the hinge plate 3.

[0067] like Figure 12 and Figure 13 As shown, in this embodiment, the hinge plate 3 has a width direction, and the two hinge ends 31 are arranged along the width direction. The width of the hinge plate 3 is L, and L≥2H. When the first connecting part 11 and the second connecting part 12 are in the folded position, the two first limiting surfaces 151 are in relative positions. When L=2H, the side walls of the first connecting part 11 and the second connecting part 12 remain in contact, thereby minimizing the volume of the first connecting part 11 and the second connecting part 12 after folding, minimizing the overall vehicle volume after folding, and making the vehicle easier to store and carry. Of course, it can be understood that L can also be slightly greater than 2H, so that there is a small gap between the first connecting part 11 and the second connecting part 12, so that the first connecting part 11 and the second connecting part 12 can rotate smoothly.

[0068] like Figures 9 to 12 As shown, in this embodiment, the maximum rotation angle of the first connecting part 11 and the second connecting part 12 is 90 degrees. When the first connecting part 11 and the second connecting part 12 rotate from the open position to the folded position, the first connecting part 11 or the second connecting part 12 is controlled to rotate 90 degrees around the hinge end 31 until the side walls of the first connecting part 11 and the second connecting part 12 are close to each other, so that the first connecting part 11 and the second connecting part 12 reach the folded position, allowing the user to clearly feel that the first connecting part 11 and the second connecting part 12 have rotated to the open position or the folded position; in addition, the rotation of the first connecting part 11 and the second connecting part 12 will not affect each other, and at the same time, it can also reduce the possibility of the first connecting part 11 and the second connecting part 12 being damaged by collision.

[0069] like Figures 5 to 7As shown, in this embodiment, the outer periphery of the hinge end 31 is a circumferential curved surface. The connection between the first limiting surface 151 and the second limiting surface 152 is provided with a smooth curved surface 153 that matches the circumferential curved surface. Through the cooperation of the circumferential curved surface and the smooth curved surface 153, the rotation of the first connecting part 11 and the second connecting part 12 can be made smoother, avoiding the possibility of the first connecting part 11 and the second connecting part 12 getting stuck. Of course, in this embodiment, the corners at the ends of the first connecting part 11 and the second connecting part 12 are also provided with curved surfaces, thereby avoiding mutual interference between the first connecting part 11 and the second connecting part 12 when they rotate.

[0070] Example 2:

[0071] like Figure 16 and Figure 17 As shown in the figure, this embodiment illustrates a folding bicycle, including a first frame 51, a second frame 52, and a folding structure 1. The first frame 51 and the second frame 52 are hinged to each other through the folding structure 1. The folding structure 1 adopts the folding structure 1 for folding bicycles as described in Embodiment 1. The first frame 51 and the second frame 52 are respectively provided with mounting grooves for mounting the first connecting part 11 and the second connecting part 12. Both the first connecting part 11 and the second connecting part 12 are provided with mounting parts 13. The mounting parts 13 extend into the mounting groove and maintain contact with the inner wall of the mounting groove. This can improve the connection stability between the first connecting part 11 and the first frame 51, and between the second connecting part 12 and the second frame 52, reduce the possibility of the folding structure 1 shaking, and make the structure of the bicycle 5 more stable and reliable in the locked state, thereby improving the user's riding safety.

[0072] In this embodiment, when the first frame 51 and the second frame 52 are locked by the folding structure 1, the outer periphery of the folding structure 1 is flush with the outer periphery of the first frame 51 and the second frame 52, which can improve the overall appearance of the vehicle. In addition, since the frame is flat, it can prevent the user from accidentally touching or bumping into the folding structure 1 during riding, thereby preventing the user from being injured by the folding structure 1 and ensuring the structural stability of the folding structure 1 during riding.

[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A folding structure for a folding bicycle, comprising a first connecting part and a second connecting part hinged together, wherein a locking structure is provided between the first connecting part and the second connecting part, characterized in that, The locking structure includes a locking member threadedly connected to the first connecting part and a lock hole disposed in the second connecting part. The locking member has an unlocking position that can pass through the lock hole to disengage from the second connecting part, and a locking position that is limited and engaged with the side of the peripheral wall of the lock hole away from the first connecting part. An adjusting screw is threadedly connected to the end face of the first connecting part or the second connecting part. In the locked position, the adjusting screw and the locking member respectively exert opposite forces on the second connecting part, and the adjusting screw and the locking member clamp the second connecting part to lock the second connecting part.

2. The folding structure for a folding bicycle according to claim 1, characterized in that, The adjusting screw is located on the end face of the first connecting part, and the first connecting part is provided with two adjusting screws. The two adjusting screws are located on both sides of the locking member. In the locked position, the adjusting screw can replace the end face of the first connecting part and abut against the second connecting part.

3. The folding structure for a folding bicycle according to claim 2, characterized in that, In the locked position, the adjusting screw and the locking member exert opposite forces on the second connecting part, and the adjusting screw and the locking member clamp the second connecting part to lock the second connecting part.

4. The folding structure for a folding bicycle according to claim 1, characterized in that, The first connecting part is provided with a positioning block and an elastic element acting on the positioning block. The locking element is provided with a positioning groove for the positioning block to be embedded in. When the locking element is in the locked position, the positioning block cooperates with the positioning groove under the force of the elastic element to limit the locking element in a circumferential direction.

5. A folding structure for a folding bicycle according to claim 4, characterized in that, The first connecting part is provided with a sliding groove for the positioning block to slide. One end of the sliding groove passes through the first connecting part and is threadedly connected to an adjusting member. The two ends of the elastic member abut against the adjusting member and the positioning block, respectively.

6. A folding structure for a folding bicycle according to claim 4, characterized in that, The locking component includes a locking rod and a handle. The handle is anti-rotationally engaged with the locking rod, and a positioning groove is provided on the surface of the handle.

7. A folding structure for a folding bicycle according to claim 6, characterized in that, The end of the locking rod is provided with a lock head. In the unlocked position, the projection of the lock head on the second connecting part is entirely inside the lock hole. In the locked position, the projection of the lock head on the second connecting part is located outside the lock hole to achieve a limiting fit.

8. A folding structure for a folding bicycle according to claim 7, characterized in that, The edge of the lock hole away from the first connecting part is provided with a limiting groove, and the bottom of the limiting groove forms a locking surface. When in the locked position, the projection part of the lock head on the second connecting part is located in the locking surface.

9. A folding structure for a folding bicycle according to claim 1, characterized in that, The first connecting part and the second connecting part are provided with a groove and a boss on the opposite side. When the locking member is in the locked position, the boss extends into the groove to achieve a limiting fit.

10. A folding bicycle, comprising a first frame and a second frame, characterized in that: A folding structure is provided between the first frame and the second frame, the folding structure being the folding structure for a folding bicycle as described in any one of claims 1 to 9.

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