Integrally-formed push buckle and self-locking type folding connector

Abstract

The utility model discloses an integrally formed push buckle which comprises a hand push part and a locking part which are connected into a whole, the hand push part is wider than the locking part, one end of the locking part is provided with a lock head, a concave lock groove is arranged between the lock head and the hand push part, and the locking part is provided with a limiting groove. The integrally-formed push buckle is convenient to install and use. The utility model further discloses a self-locking type folding connector.

Description

Technical Field

[0001] This utility model relates to the field of folding bicycle and folding electric vehicle technology, and in particular to an integrated push-button and self-locking folding connector that can be applied to folding bicycles or folding electric vehicles. Background Technology

[0002] Folding bicycles are lightweight, compact when folded, and easy to carry, making them a very important type of bicycle with an increasingly popular trend. The folding joint is a crucial component of a folding bicycle, enabling it to be quickly folded or unfolded.

[0003] Chinese patent document CN209795706U discloses a folding connector device, in which an upper connecting plate and a lower connecting plate are hinged together on one side and have a locking groove on the other side. The upper and lower connecting plates are connected and locked by adjusting the movement of the locking block through a rotating lever. Because the locking block is external, if a foreign object gets stuck during locking, it will prevent the device from locking properly and there is a risk of children's fingers getting stuck. In addition, there is no self-locking device on the rotating lever, which increases the risk of loosening due to bumpy roads during use.

[0004] Chinese patent document CN115402451A discloses a self-locking assembly, which includes a self-locking bolt, a sliding buckle, and a return spring. The sliding buckle is fixedly connected to the self-locking bolt, and the sliding buckle and the self-locking bolt are slidable relative to a handle. The self-locking bolt and the sliding buckle are designed as two parts, which need to be fixedly connected by other fasteners during assembly. This results in a large number of parts, high production costs, and complicated assembly. Utility Model Content

[0005] The present invention aims to provide a simple and easy-to-install one-piece molded push-button.

[0006] The technical solution adopted by the one-piece molded push-button disclosed in this utility model is as follows:

[0007] A one-piece molded push button includes a push part and a locking part that are connected as a whole. The push part is wider than the locking part. One end of the locking part is provided with a lock head. A recessed locking groove is provided between the lock head and the push part. A limiting groove is provided on the locking part to limit the sliding installation of the one-piece molded push button.

[0008] Furthermore, the limiting groove is a through hole.

[0009] Furthermore, a limiting notch is provided on the locking part on the side opposite to the lock head. The limiting notch and the limiting groove have the same width and the same distance to the push part.

[0010] Furthermore, a guide ramp is provided on the outer side of the lock head.

[0011] This utility model features an integrated push-button design where the push-button and locking parts are a single unit, resulting in fewer components, simplified assembly, and reduced processing costs associated with manufacturing multiple parts.

[0012] This utility model also provides a self-locking folding joint that is safe to operate.

[0013] The technical solution adopted by the self-locking folding joint disclosed in this utility model is as follows:

[0014] A self-locking folding connector includes an integrally formed push buckle, a lower connector, an upper connector, and a handle. One side of the lower connector, one side of the upper connector, and one end of the handle are hinged together. The handle has a stepped mounting hole. The locking part passes through the stepped mounting hole and is limited by a limiting device installed in the limiting groove. The lower connector is provided with a locking hook at the position opposite to the locking groove. The handle is movably connected to one end of a connecting rod, and the other end of the connecting rod is movably connected to a locking block. Rotating the handle causes the locking block to move. The arc-shaped groove on the locking block engages and fixes the first protrusion on the lower connector and the second protrusion on the upper connector.

[0015] Furthermore, the limiting device is a retaining ring, and the retaining ring has disassembly holes at both ends.

[0016] Furthermore, it also includes a reset elastic element, one end of which is connected to the locking part, and the other end is connected to the inner wall of the handle.

[0017] Furthermore, a reset groove is provided on the side of the locking part opposite to the lock head, and the reset elastic element is installed in the reset groove.

[0018] Furthermore, the lower connector hinge end is provided with a first stop groove and a second stop groove, and the upper connector hinge end is provided with a first stop boss and a second stop boss whose size corresponds to the stop groove.

[0019] Furthermore, the locking block has a lug on the side near the lower connector, and a corresponding limiting groove is provided on the inner side of the lower connector opposite to the lug. The lug moves back and forth along the limiting groove to prevent the locking block from shifting.

[0020] This utility model features a self-locking folding connector with a built-in locking block. The movement of the locking block is entirely within the upper and lower connectors, effectively preventing foreign objects from entering and improving the stability of the device. Furthermore, the self-locking mechanism prevents accidental opening of the folding connector due to accidental handle activation during use, ensuring product stability and user safety. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the self-locking folding joint of this utility model;

[0022] Figure 2 This is an exploded view of the self-locking folding joint of this utility model;

[0023] Figure 3This is a three-dimensional schematic diagram of the lower connector of the self-locking folding connector of this utility model;

[0024] Figure 4 This is a three-dimensional schematic diagram of the upper connector of the self-locking folding connector of this utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of the self-locking folding joint handle of this utility model;

[0026] Figure 6 This is a three-dimensional schematic diagram of the locking block of the self-locking folding joint of this utility model;

[0027] Figure 7 This is a three-dimensional schematic diagram of the self-locking component of the self-locking folding joint of this utility model. Detailed Implementation

[0028] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0029] like Figure 2 , 5 As shown in Figures 7 and 8, an integrally molded push-button 40 mounted on a handle 30 includes a push-button portion 404 and a locking portion 405.

[0030] like Figure 5 As shown, one end of the handle 30 is provided with a handle hinge joint 303, and the handle hinge joint 303 is provided with a handle hinge shaft hole 306. The other end is provided with a handle. The handle 30 is provided with a stepped mounting hole 301, and the inner side of the handle 30 is provided with a ball joint groove 305.

[0031] like Figure 2 , 7 As shown, the one-piece molded push-button 40 consists of a push-button part 404 and a locking part 405. The push-button part 404 is wider than the locking part 405. Limiting grooves 403 are provided on both sides of the locking part 405. The distance between the limiting grooves 403 and the bottom surface of the push-button part 404 is slightly larger than the thickness of the inner hole of the stepped mounting hole 301. The width of the locking part 405 matches the width of the stepped mounting hole 301. A lock head 406 is provided at one end of the locking part 405. A recessed locking groove 409 is provided between the lock head 406 and the push-button part 404. A guide slope 407 is provided on the outer side of the lock head 406, and a locking plane 408 is provided on the inner side of the locking groove. The one-piece molding of the push-button reduces the number of parts, lowers production costs, and simplifies the assembly process.

[0032] In another embodiment, the limiting groove 403 is a through hole. During assembly, after the locking part 405 is inserted into the handle stepped mounting hole 301, a limiting device is inserted into the limiting groove 403 to limit the one-piece molded push buckle 40 to slide on the handle 30.

[0033] In another embodiment, the other end of the locking part 405 is provided with a limiting notch 402. The limiting notch 402 and the limiting groove 403 have the same width and the same distance to the push part 404. The limiting notch 402 is an arc-shaped notch that is narrow in the middle and wide at both sides, and the limiting groove 403 is an arc-shaped groove that is deep in the middle and shallow at both sides. During assembly, the locking part 405 is inserted into the stepped mounting hole 301 of the handle, and the limiting device retaining ring 43 is engaged with the limiting groove 403 and the limiting notch 402 to prevent the one-piece push buckle 40 from disengaging from the handle 30 and to allow it to be pushed back and forth along the stepped mounting hole 301.

[0034] In another embodiment, the retaining ring 43 is provided with disassembly holes 431 at both ends. During assembly, insert both ends of needle-nose pliers into the disassembly holes and pry open the opening of the retaining ring 43 to facilitate engagement. During disassembly, the opening of the retaining ring 43 is also pried open to facilitate removal of the retaining ring.

[0035] like Figure 2 As shown, an elastic reset member 41 is also provided between the integrally molded push button 40 and the inner wall of the handle 30. Here, the reset elastic member is preferably a spring, and the two ends of the elastic reset member 41 are respectively connected to the integrally molded push button 40 and the inner wall of the handle 30.

[0036] In another embodiment, a reset groove 401 is provided on the side of the locking part 405 opposite to the lock head 406. A reset elastic member 41 is installed in the reset groove 401, and the other end of the reset elastic member 41 contacts the inner wall of the handle 30.

[0037] In another embodiment, a reset protrusion is provided on the locking part 405 on the side opposite to the lock head 406, and the reset elastic member 41 is fitted onto the reset protrusion.

[0038] like Figures 1 to 7 As shown, a self-locking folding connector includes a lower connector 10, an upper connector 20, a handle 30, an integrally molded push buckle 40, a hinge pin 50, a locking block 60, a locking rod 70, and a connecting rod 80.

[0039] like Figures 1 to 2 As shown, the self-locking folding connector of this solution includes a lower connector 10, an upper connector 20, and a locking mechanism. The lower connector 10 has a lower connector hinge ear 101 on one side, and a lower connector hinge shaft hole 102 on the lower connector hinge ear 101. A first boss 106 is provided on the opposite side of the lower connector hinge ear 101, and a locking hook 103 is provided on the opposite side of the first boss 106. The upper connector 20 has an upper connector hinge ear 201 on one side, and an upper connector hinge shaft hole 202 on the upper connector hinge ear 201. A second boss 205 is provided on the opposite side of the upper connector hinge ear 201. The lower connector hinge shaft hole 102, the upper connector hinge shaft hole 202, and the handle hinge shaft hole 306 are hinged together by a hinge shaft 50.

[0040] In another embodiment, the lower connector 10 has a first stop groove 105 and a second stop groove 107 at its hinge end, and the upper connector 20 has a first stop boss 203 and a second stop boss 204, the size of which corresponds to the stop grooves. The number and shape of the stop grooves and stop bosses can be determined according to actual usage. When the upper and lower connectors are connected, the stop components cooperate to limit each other, preventing the upper and lower connectors from moving laterally and improving the stability of the folded connector.

[0041] like Figure 2 , 6 As shown, one end of the locking block 60 is provided with a through hole 603, and a connecting hole 602 is provided perpendicular to the axis of the through hole 603. The other end of the locking block 60 is provided with an upper arc-shaped rail surface 604 and a lower arc-shaped rail surface 605, and an arc-shaped groove 606 is formed between the upper and lower arc-shaped rail surfaces. One end of the connecting rod 80 is provided with a circular connector, and the other end is provided with an external thread. The middle part of the locking rod 70 is provided with an internal threaded hole 701 that mates with the external threaded end of the connecting rod 80. The locking rod 70 is inserted into the through hole 603, keeping the internal threaded hole 701 on the locking rod aligned with the connecting hole 602 on the locking block 60. The external threaded end of the connecting rod 80 passes through the connecting hole 602 and the internal threaded hole 701 of the locking rod 70 and is fixedly connected. The circular connector end of the connecting rod 80 is movably connected to the ball joint groove 305 on the handle.

[0042] In another embodiment, the upper arc-shaped rail surface 604 and the lower arc-shaped rail surface 605 have rounded corners on the side near the arc-shaped groove 606 so that the first boss 106 and the second boss 205 can enter the arc-shaped groove 606 during the locking process.

[0043] In another embodiment, the first boss 106 and the second boss 205 are provided with chamfers.

[0044] In another embodiment, the locking block 60 is provided with a lug 602, and the inner side of the lower connector 10 is provided with a limiting groove 104 opposite to the lug 602, so as to keep the locking block 60 from moving back and forth along the limiting groove and from shifting left and right.

[0045] In the locked state, the handle 30 is close to the lower connector 10. At this time, the locking surface 408 contacts and engages with the locking hook 103, and the handle 30 cannot be separated from the locking hook 103, forming a stable locking state. To unlock, the one-piece push buckle 40 must first be pushed down. After the locking surface 408 disengages from the locking hook 103, the handle 30 is rotated along the hinge axis 50 to unlock. During unlocking, the handle 30 drives the connecting rod 80 to move outward, which in turn drives the locking block 60 to move towards the hinge side. When the first boss 106 and the second boss 205 are completely disengaged from the arc-shaped groove 606, the upper and lower connectors can be rotated along the hinge axis to achieve a folding effect. In use, first rotate the upper and lower connectors along the hinge axis to the connection position, and then push the handle 30. Within the cavity formed by the lower connector 10 and the upper connector 20, the locking block 60 gradually moves away from the hinge axis under the action of the connecting rod 80 until the locking block completely engages the first boss 106 and the second boss 205 inside the arc-shaped groove 606. While the rotating handle locks the upper and lower joints, the locking hook 103 pushes the one-piece push button 40 outward along the guide slope 407 and compresses the reset elastic element 41. When the locking hook 103 enters the locking groove 409, the supporting force of the locking hook 103 on the lock head 406 suddenly disappears, and the one-piece push button 40 resets under the push of the elastic force, locking the hook 103 in the locking groove 409. Without pushing the one-piece push button 40, even if the handle 30 is turned, it cannot be opened, thus achieving the self-locking function. During the locking and unlocking process, because the locking block is built-in, the movement of the locking block is completed inside the upper and lower joints, effectively preventing foreign objects from entering and improving the stability of the device. At the same time, the self-locking device prevents the folding joint from opening due to accidental touch of the handle during use, ensuring the stability of product use and the safety of the user.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A one-piece molded push-button, comprising a push-button portion (404) and a locking portion (405) integrally formed, characterized in that: The push part (404) is wider than the locking part (405). One end of the locking part (405) is provided with a lock head (406). A recessed locking groove (409) is provided between the lock head (406) and the push part (404). A limiting groove (403) is provided on the locking part (405) to limit the sliding installation of the one-piece molded push buckle (40).

2. The one-piece molded push-button according to claim 1, characterized in that: The limiting groove (403) is a through hole.

3. The one-piece molded push-button according to claim 1, characterized in that: The locking part (405) has a limiting notch (402) on the side opposite to the lock head (406). The limiting notch (402) and the limiting groove (403) have the same width and are the same distance from the push part (404).

4. The one-piece molded push-button according to claim 1, characterized in that: The lock head (406) has a guide slope (407) on its outer side.

5. A self-locking folding joint, characterized in that: The device includes an integrally molded push button (40), a lower connector (10), an upper connector (20), and a handle (30) as described in any one of claims 1-4. One side of the lower connector (10), one side of the upper connector (20), and one end of the handle (30) are hinged together. The handle (30) is provided with a stepped mounting hole (301). The locking part (405) passes through the stepped mounting hole (301) and is limited by a limiting device installed in the limiting groove (403). The lower connector (10) and the locking groove (409) are provided with a locking hook (103) at opposite positions. The handle (30) is movably connected to one end of the connecting rod (80), and the other end of the connecting rod (80) is movably connected to the locking block (60). Rotating the handle (30) causes the locking block (60) to move. The arc-shaped groove (606) on the locking block engages and fixes the first boss (106) on the lower connector and the second boss (205) on the upper connector.

6. The self-locking folding joint according to claim 5, characterized in that: The limiting device is a retaining ring (43), and the retaining ring (43) has disassembly holes (431) at both ends.

7. The self-locking folding joint according to claim 5, characterized in that: It also includes a reset elastic element (41), one end of which is connected to the locking part (405), and the other end is connected to the inner wall of the handle.

8. The self-locking folding joint according to claim 7, characterized in that: A reset groove (401) is provided on the side opposite to the lock head (406) on the locking part (405), and a reset elastic element (41) is installed in the reset groove (401).

9. The self-locking folding joint according to claim 5, characterized in that: The lower connector (10) has a first stop groove (105) and a second stop groove (107) at its hinge end, and the upper connector (20) has a first stop boss (203) and a second stop boss (204) at its hinge end, which are of the same size as the stop grooves.

10. The self-locking folding joint according to claim 5, characterized in that: The locking block (60) has a lug (601) on the side near the lower connector. The inner side of the lower connector (10) is provided with a matching limiting groove (104) opposite to the lug (601). The lug (601) moves back and forth along the limiting groove (104) to prevent the locking block (60) from shifting.

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