Joint structure

Abstract

The utility model discloses a joint structure which comprises a fixed part, a rotating part, a locking structure and an unlocking structure, the locking structure is used for preventing the rotating part from rotating relative to the fixed part, the locking structure comprises an eccentric pin and a shifting piece, the fixed part and the rotating part are connected in series through the eccentric pin, and the eccentric pin is fixedly connected to one side of the shifting piece. The fixed part is provided with a sliding groove for the shifting piece to slide in the direction parallel to the axial direction of the fixed part, and the unlocking structure is matched with the shifting piece so that the shifting piece can slide on the sliding groove till the eccentric pin is disengaged from the rotating part. The electronic lock is simple in structure and convenient to unlock, can be unlocked manually or mechanically, and has an unlocking memory function.

Description

Technical Field

[0001] The utility model relates to a joint structure, in particular to a joint structure with an unlocking memory function. Background Art

[0002] Folding bikes are popular in the market due to their portability and compact storage. Folding bikes often utilize joints for rotation and folding. However, existing joint structures are complex. Summary of the Invention

[0003] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a joint structure that is relatively simple, easy to unlock and has an unlocking memory function.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A joint structure includes a fixed part, a rotating part, a locking structure for preventing the rotating part from rotating relative to the fixed part, and an unlocking structure. The feature is that the locking structure includes an eccentric pin and a toggle plate that connect the fixed part and the rotating part, wherein the eccentric pin is fixedly connected to one side of the toggle plate, and a sliding groove is provided on the fixed part for the toggle plate to slide in an axial direction parallel to the fixed part. The unlocking structure cooperates with the toggle plate to enable the toggle plate to slide on the sliding groove until the eccentric pin is disengaged from the rotating part.

[0006] Furthermore, the unlocking structure includes a push-to-unlock block. Correspondingly, a limiting groove is provided on the fixed portion and below the chute. The bottom of the chute and the top of the limiting groove are connected. The push-to-unlock block is limited in the limiting groove and the two slide together. The bottom of the toggle piece passes through the chute and abuts against the push-to-unlock block. The side of the push-to-unlock block that abuts against the toggle piece is designed to be an inclined surface. The unlocking structure is simple.

[0007] Furthermore, a pin mounting slot is provided on the push-to-unlock block, on the back side of its inclined surface. A memory pin is connected to the pin mounting slot via a spring. Under the action of the spring, the outer end of the memory pin extends from the pin mounting slot. Correspondingly, a memory pin hole is provided in the limit slot. When the push-to-unlock block slides to the upper end of the inclined surface and engages the toggle piece, the outer end of the memory pin extends into the memory pin hole, thereby realizing the memory function.

[0008] Furthermore, the memory pin hole is a through hole, in which a memory unlocking pin is connected via a spring. Correspondingly, a memory unlocking slot is provided on the rotating portion near the limiting slot. Under the action of the spring, a portion of the memory unlocking pin extends into the memory pin hole and the other portion into the memory unlocking slot, thereby releasing the memory function.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The utility model has a simple structure and is easy to unlock, which can be done manually or mechanically, and has an unlocking memory function. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the cooperation between the push-to-unlock block and the toggle piece of the present invention;

[0013] Figure 3 This is a structural diagram of the toggle piece of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the push-to-unlock block of the utility model;

[0015] Figure 5 This is a schematic diagram of the structural position relationship of the limit slot, memory unlocking pin, etc. of the utility model;

[0016] Figure 6 This is a structural diagram of the memory unlocking slot of the present invention;

[0017] Among them, 1. Fixed part, 11. Inner part, 12. Outer part, 13. Slide groove, 14. Closing piece, 15. Limiting groove, 151. Memory pin hole, 2. Rotating part, 21. Memory unlocking groove, 3. Locking structure, 31. Toggle piece, 32. Eccentric pin, 4. Unlocking structure, 41. Inclined surface, 5. Memory pin, 6. Memory unlocking pin. DETAILED DESCRIPTION

[0018] The present invention will now be further described with reference to the accompanying drawings. Any unspecified details herein are based on existing techniques. The following descriptors regarding orientation, such as "inner" refers to the side of the joint facing away from the viewer during use, and "outer" refers to the side facing the viewer during use.

[0019] like Figure 1-6 As shown, the joint structure of the present invention includes a fixed portion 1, a rotating portion 2, a locking structure 3 for preventing the rotating portion from rotating relative to the fixed portion, and an unlocking structure 4. The fixed portion 1 is divided into inner and outer portions 11 and 12, which are fixedly connected. The rotating portion 2 is inserted between the inner and outer portions 11 and 12 of the fixed portion, and the fixed portion 1 and the rotating portion 2 are coaxially arranged. When unlocked, the rotating portion 2 rotates relative to the fixed portion 1. Eccentric through-holes are formed in both the fixed portion 1 and the rotating portion 2.

[0020] A slot 13 is formed on the inner side of the fixed portion 11, through which the locking structure 3 slides. The direction in which the locking structure 3 slides on the slot 13 is parallel to the axial direction of the fixed portion. A sealing piece 14 is fixedly connected to the inner end of the slot 13 to prevent the locking structure 3 from completely sliding out of the slot 13. The locking structure 3 includes a toggle piece 31 and an eccentric pin 32. The toggle piece 31 slides in engagement with the slot 13, with the upper and lower ends of the toggle piece 31 extending out of the upper and lower portions of the slot 13. The eccentric pin 32 is fixedly connected to the outer side of the toggle piece 31, and the eccentric pin 32 is arranged orthogonally to the toggle piece 31. When in the locked state, the eccentric pin 32 passes through the eccentric perforation in the inner portion 11, the eccentric perforation in the rotating portion, and the eccentric perforation in the outer portion 12, from the inside out.

[0021] The unlocking structure 4 can be any structure in the prior art that can slide the toggle piece 31 inward to the maximum position. In the present application, the unlocking structure 4 is preferably a push-to-unlock block. A limiting groove 15 is formed on the inner side of the inner portion 11 of the fixed part 1 and below the slide 13 for the push-to-unlock block 4 to slide back and forth. The top of the limiting groove 15 is connected to the bottom of the slide 13, and the push-to-unlock block 4 is limited in the limiting groove 15. After the bottom of the toggle piece 31 extends from the slide 13, it fits on the inner side of the push-to-unlock block 4. The side surface on the push-to-unlock block 4 that is used to fit with the toggle piece 31 is an inclined surface 41. When the sliding push-to-unlock block slides until the toggle piece 31 slides from the lower end to the higher end of its inclined surface, the toggle piece 31 is squeezed by the inclined surface, and eventually the eccentric pin 32 disengages the rotating part 2 from the fixed part 1 to achieve the unlocking of the joint.

[0022] In order to enable the unlocking structure 4 of the present invention to have an unlocking memory function, a pin mounting groove is provided on the outer side of the push-to-unlock block 4 (specifically, the back side of the high end of the inclined surface). A memory pin 5 is connected to the pin mounting groove via a spring. Under the action of the spring, the outer end of the memory pin 5 extends half its length from the pin mounting groove. Correspondingly, a memory pin hole 151 is provided in the limit groove 15 and below the slide groove 13, penetrating the inner and outer sides of the inner portion 11. When the push-to-unlock block 4 slides to the maximum position that squeezes the toggle plate out, one end of the memory pin 5 extends into the memory pin hole 151, thereby realizing the unlocking memory function. After the push-to-unlock block 4 is in place, this unlocking state is memorized. There is no need to press the push-to-unlock block 4 all the time, making operation more convenient.

[0023] To achieve memory release, the present invention further defines a memory unlocking groove 21 on the inner side of the rotating portion 2. The groove's peripheral wall is inclined (sloping outward from the groove bottom toward the groove opening). A memory unlocking pin 6 is spring-loaded within the memory pin hole 151. Under the action of this spring, half of the memory unlocking pin 6 is located within the memory pin hole 151 and the other half within the memory unlocking groove 21. The remaining half of the memory pin hole 151 is occupied by the memory pin 5. Rotation of the rotating portion 2 forces the memory unlocking pin 6 into the memory pin hole 151, thereby extending the memory pin, which is in the memory state, from the memory pin hole, achieving memory release.

[0024] The utility model can be applied to the frame joint or the seat frame joint, and is easy to unlock. The figure shows that it is used for the frame joint. The rotating part includes a push handle rotating arm and a front wheel rotating arm, and the fixed part is a rear wheel fixed arm.

Claims

1. A joint structure comprising a fixed portion, a rotating portion, a locking structure for preventing the rotating portion from rotating relative to the fixed portion, and an unlocking structure, characterized in that: The locking structure includes an eccentric pin and a toggle plate that connect the fixed part and the rotating part, wherein the eccentric pin is fixedly connected to one side of the toggle plate, and a sliding groove is provided on the fixed part for the toggle plate to slide along the axial direction parallel to the fixed part. The unlocking structure cooperates with the toggle plate to enable the toggle plate to slide on the sliding groove until the eccentric pin disengages from the rotating part.

2. The joint structure according to claim 1, characterized in that The above-mentioned unlocking structure includes a push-to-unlock block. Correspondingly, a limiting groove is provided on the fixed part and below the slide groove. The bottom of the slide groove and the top of the limiting groove are connected. The push-to-unlock block is limited in the limiting groove and the two slide together. After the bottom of the toggle piece passes through the slide groove, it fits on the push-to-unlock block, and the side of the push-to-unlock block used to fit with the toggle piece is designed to be a slope.

3. The joint structure according to claim 2, characterized in that A pin mounting groove is provided on the push-to-unlock block and on the back side of its inclined surface. A memory pin is connected to the pin mounting groove through a spring. Under the action of the spring, the outer end of the memory pin extends from the pin mounting groove; correspondingly, a memory pin hole is provided in the limit groove. When the push-to-unlock block slides to the high end of the inclined surface and fits with the toggle piece, the outer end of the memory pin extends into the memory pin hole.

4. The joint structure according to claim 3, characterized in that: The memory pin hole is a through hole, and a memory unlocking pin is connected to the memory pin hole through a spring. Correspondingly, a memory unlocking groove is opened on the rotating part and on the side close to the limiting groove. Under the action of the spring, a part of the memory unlocking pin is extended into the memory pin hole, and the other part is extended into the memory unlocking groove.

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