Locking block and folding joint

Abstract

The utility model discloses a locking block which comprises a front end and a rear end, the front end is provided with a front clamping portion, the side portion of the locking block is provided with a side clamping portion, and the front clamping portion and the side clamping portion are located on the upper portion and the lower portion of the locking block respectively. The locking block provided by the utility model has the advantages that the stress is dispersed, and the use is longer. The utility model further discloses a folding connector.

Description

Technical Field

[0001] The utility model relates to the technical field of folding bicycles and folding electric bicycles, in particular to a locking block and a folding joint used for folding bicycles and folding electric bicycles. Background Art

[0002] The folding connection parts of foldable devices such as folding bicycles and folding electric vehicles all use quick-release folders to quickly fold, disassemble and even lock these connection parts.

[0003] Chinese patent publication CN113120140A discloses a foldable joint and a bicycle, the foldable joint comprising a first connecting plate, a second connecting plate, and a locking structure. The locking structure comprises a locking tongue and a lever, the locking tongue being formed by an extrusion process and connected to the first connecting plate, the lever being rotatably connected to either the first connecting plate or the second connecting plate and being rotatable relative to the locking tongue, the first connecting plate and the second connecting plate being capable of being in a closed state or an open state, and in the closed state, the first connecting plate and the second connecting plate are locked by the locking tongue; the locking structure comprises a resisting member, a stopper, an elastic member, and a stopper, one end of the resisting member being fixedly connected to the locking tongue, the other end of the resisting member abutting the lever, the stopper being fixedly connected to the first connecting plate, the elastic member being sleeved over the resisting member, and the two ends of the elastic member abutting the stopper and the resisting member, respectively; the lever being an eccentric lever, being capable of driving the resisting member to move relative to the first connecting plate during rotation to compress the bicycle. The locking member is configured to lock the locking tongue when the locking member is in the closed position and the locking cam is configured to lock the locking member when the locking member is in the closed position.

[0004] The first connecting plate and the second connecting plate of the foldable joint are locked by the front end of the lock tongue, and the lock tongue concentrates the force on the front end. When the folding bicycle or electric bicycle is bumpy, the lock tongue is prone to reduce the fatigue life of the component due to long-term and frequent stress concentration. Utility Model Content

[0005] The purpose of the utility model is to provide a locking block which can disperse the force and has a longer service life.

[0006] The technical solution adopted by the locking block disclosed in the utility model is:

[0007] A locking block comprises a front end and a rear end, wherein the front end is provided with a front clamping portion, and the side of the locking block is provided with a side clamping portion, wherein the front clamping portion and the side clamping portion are respectively located at the upper part and the lower part of the locking block.

[0008] As a preferred solution, the front clamping portion and the side clamping portion are arc-shaped.

[0009] As a preferred solution, the front clamping portion and the side clamping portion partially overlap in the vertical direction.

[0010] As a preferred solution, the angle between the overlapping area of ​​the front clamping portion and the side clamping portion and the front end face is 40°-50°.

[0011] As a preferred solution, a countersunk hole is provided at the front end of the locking block.

[0012] As a preferred solution, the locking block is in the shape of "m".

[0013] As a preferred solution, a threaded hole is provided in the middle of the rear end of the locking block.

[0014] The beneficial effects of the locking block disclosed in the utility model are as follows: a front clamping portion is provided at the front end of the locking block, and a side clamping portion is provided at the side of the locking block. By arranging the front clamping portion and the side clamping portion along the edge of the locking block, the force is dispersed when the locking block is locked with the first joint and the second joint, thereby avoiding stress concentration and strain on the folding bicycle or electric bicycle during bumpy riding, thereby extending its service life.

[0015] The technical solution adopted by the folding joint disclosed in the utility model is:

[0016] A folding joint comprises a first joint, a second joint, a handle, a pad, an adjusting rod, a compression spring and a locking block, wherein an eccentric wheel is provided at one end of the handle, an eccentric hole is provided on the eccentric wheel, one end of the first joint, one end of the second joint and the handle are hingedly connected, the pad is provided at one end of the adjusting rod, and the locking block is provided at the other end of the adjusting rod, the pad is provided with an arc groove that cooperates with the eccentric wheel, one end of the compression spring abuts the locking block, and the other end abuts the first joint or the second joint, under the action of the compression spring, the arc groove of the pad fits into the eccentric wheel, the first joint is provided with a first clamping groove, and the second joint is provided with a second clamping groove, and the pad and the adjusting rod are pushed by the handle to drive the locking block to clamp and lock with the first joint and the second joint.

[0017] As a preferred solution, the first clamping grooves are provided on both sides of the first connector, the side clamping portions on the side of the locking block are embedded in the first clamping grooves, the second clamping grooves are provided on the inner side of the other end of the second connector, and the front clamping portion of the locking block is engaged with or disengaged from the second clamping grooves.

[0018] As a preferred embodiment, a self-locking component is further included, which includes a button and a reset spring. The handle is provided with a button slot, which extends to the eccentric wheel of the handle. The button and the reset spring are arranged in the button slot of the handle. The button is provided with a pressing part, a locking part and a pressure-receiving part. The locking part protrudes from the pressure-receiving part. One side of the hinged ear of the first joint is provided with a self-locking groove that cooperates with the locking part, and the edge of the hinged ear of the second joint is provided with a recess that cooperates with the pressure-receiving part.

[0019] The beneficial effects of the folding joint disclosed in the utility model are as follows: a front clamping portion is provided at the front end of the locking block, and a side clamping portion is provided at the side of the locking block. By arranging the front clamping portion and the side clamping portion along the edge of the locking block, the force is dispersed when the locking block is locked with the first joint and the second joint, thereby avoiding stress concentration and strain on the folding bicycle or electric bicycle during bumpy riding, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the folding joint of the utility model;

[0021] Figure 2 It is an exploded schematic diagram of the folding joint of the utility model;

[0022] Figure 3 It is a schematic diagram of the locking block of the folding joint of the utility model;

[0023] Figure 4 This is a schematic diagram of the locking block of the folding joint of the utility model from another angle;

[0024] Figure 5 This is a schematic diagram of the locking block of the folding joint of the utility model from another angle;

[0025] Figure 6 It is a structural diagram of the button of the folding connector of the utility model;

[0026] Figure 7 This is a structural diagram of the first joint of the folding joint of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the second joint of the folding joint of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings:

[0029] Please refer to Figure 1 and Figure 2 A folding joint includes a first joint 20, a second joint 30, a handle 40, a machine screw 80, a pad 90, a gasket 100, an adjusting rod 110, a compression spring 120, a self-locking assembly and a locking block 10.

[0030] An eccentric wheel is provided at one end of the handle 40, and an eccentric hole is provided on the eccentric wheel. One end of the first joint 20, one end of the second joint 30 and the handle 40 are hingedly connected by a hinge shaft 50, and the hinge shaft 50 passes through the hinge ear 21 on the first joint 20, the hinge ear 31 on the second joint 30 and the eccentric hole of the eccentric wheel on the handle 40. An annular groove is provided in the middle of the hinge shaft 50, and a screw hole is provided on the side of the eccentric wheel. The machine screw 80 is provided in the screw hole and abuts against the annular groove in the middle of the hinge shaft 50 to prevent the hinge shaft 50 from moving laterally and to prevent the hinge shaft 50 from falling out of the eccentric hole. In this embodiment, first snap-in grooves are provided on both sides of the first joint 20, and a second snap-in groove is provided on the other end of the second joint 30. A self-locking groove 22 is provided on one side of the hinge ear 21 of the first joint 20, and a recess 32 is provided on the edge of the hinge ear 31 of the second joint 30. Please refer to Figure 7 and Figure 8 .

[0031] The pad 90, the washer 100, the adjusting rod 110, the locking block 10, and the compression spring 120 are disposed between the first joint 20 and the second joint 30, and are located inside the first joint 20 and the second joint 30. The pad 90 is disposed at one end of the adjusting rod 110, and is provided with an arcuate groove that cooperates with the eccentric wheel. The washer 100 is disposed between the adjusting rod 110 and the pad 90, and the locking block 10 is threadedly connected to the other end of the adjusting rod 110.

[0032] Please refer to Figures 3 to 5 The locking block 10 is provided with a front end 11 and a rear end 12, the front end 11 is provided with a front clamping portion 111, and the side of the locking block 10 is provided with a side clamping portion 13, the front clamping portion 111 and the side clamping portion 13 are respectively located at the upper and lower parts of the locking block 10, the front clamping portion 111 and the side clamping portion 13 are arc-shaped, and the front clamping portion 111 and the side clamping portion 13 partially overlap in the vertical direction. As a preferred solution, the front clamping portion 1 The angle between the overlapping area of ​​the front clamping portion 11 and the side clamping portion 13 and the front end face is 40°-50°. The front end face 11 of the locking block 10 is parallel to the rear end face 12. Therefore, the angle between the overlapping area of ​​the front clamping portion 111 and the side clamping portion 13 and the rear end face is 40°-50°, that is, the angle α between the end face of the front clamping portion 111 and the rear end face of the locking block 10 is 40°, and the angle β between the end face of the side clamping portion 13 and the rear end face is 50°. Please refer to Figure 3 , the locking block 10 can be locked more reliably with the first joint 20 and the second joint 30 during the bumpy process of the bicycle and the electric bicycle. In this embodiment, the front clamping portion 111 is provided at the lower part of the locking block 10 and cooperates with the second clamping groove of the second joint 30. The side clamping portion 13 is provided at the upper part of the locking block 10 and cooperates with the first clamping groove of the first joint 20. The first clamping groove also guides the side clamping portion 13. The front clamping portion 111 and the side clamping portion 13 are respectively clamped and connected with the second joint 30 and the first joint 20. The shape of the locking block 10 is approximately "m"-shaped, and a countersunk hole 112 is provided at the front end of the locking block 10. The compression spring 120 is provided in the countersunk hole 112. In this embodiment, the other end of the compression spring 120 abuts against the second joint 30. A threaded hole 121 is provided in the middle of the rear end of the locking block 10. The adjusting rod 110 is threadedly connected to the threaded hole 121 of the locking block 10. By adjusting the position of the locking block 10 and the adjusting rod 110, the locking degree of the locking block 10 and the first joint 20 and the second joint 30 can be set.

[0033] In this embodiment, the self-locking assembly includes a button 60 and a return spring 70. The handle 40 is provided with a button groove, which extends to the eccentric wheel of the handle 40. The button 60 and the return spring 70 are arranged in the button groove of the handle 40. The button 60 can move in the button groove under the action of pressing. The button 60 is provided with a pressing portion 61, a locking portion 62 and a pressed portion 63. Please refer to Figure 6 The locking portion 62 protrudes from the pressure-receiving portion 63 and is used to protrude from the button slot. The pressure-receiving portion 63 extends to the eccentric wheel. The hinged ear of the second joint 30 limits the pressure-receiving portion 63 to prevent the button 60 from detaching from the button slot under the action of the return spring 70, so that the button 60 has a certain moving distance in the button slot. When the first joint 20 and the second joint 30 are locked, the locking portion 62 is engaged in the self-locking groove of the first joint 20 under the action of the return spring 70, achieving self-locking of the handle 40. When the handle 40 needs to be rotated, the pressing portion 61 of the button 60 is pressed to disengage the locking portion 62 from the self-locking groove of the first joint 20, and the handle 40 can be rotated. When the first joint 20 and the second joint 30 are released and the first joint 20 is rotated to the limit position, the pressed portion 63 of the button 60 is engaged in the locking recess 32 of the second joint 30 under the action of the return spring 70, restricting the handle 40 from rotating. This prevents the handle 40 from rotating with the first joint 20 due to friction when the first joint 20 is rotated to close with the second joint 30, thereby preventing damage to the second joint 30 and the locking block 10, thereby reducing the strength of the locking block 10 and the second joint 30. In other embodiments, other self-locking components can also be used to prevent the handle 40 from rotating during locking.

[0034] The pad 90 is pressed against the eccentric wheel under the action of the compression spring 120 on the locking block 10. When the handle 40 is turned, the eccentric wheel of the handle 40 pushes the locking block 10 to move. The front end is provided with a front clamping portion and is clamped with the second clamping groove of the second joint 30 to achieve the locking of the folding joint. Since the side clamping portion remains clamped with the first clamping groove of the first joint 20, the front clamping portion and the side clamping portion are arranged along the edge of the locking block, so that when the locking block is locked with the first joint and the second joint, the force is dispersed, thereby avoiding stress concentration and strain on the folding bicycle or electric bicycle during bumpy riding, thereby extending its service life.

[0035] In other embodiments, the front clamping portion 111 can be provided at the upper portion of the locking block 10, and the side clamping portion 13 can be provided at the lower portion of the locking block 10. As long as the front clamping portion 111 and the side clamping portion 13 are respectively clamped and connected to the first joint 20 and the second joint 30, the front clamping portion 111 will be detached from the joint it cooperates with when the folding joint is loosened.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A locking block, comprising a front end and a rear end, wherein the front end is provided with a front clamping portion, characterized in that: The side of the locking block is provided with a side clamping portion, and the front clamping portion and the side clamping portion are respectively located at the upper portion and the lower portion of the locking block.

2. The locking block according to claim 1, characterized in that: The front clamping portion and the side clamping portion are arc-shaped.

3. The locking block according to claim 2, characterized in that: The front clamping portion and the side clamping portion partially overlap in the vertical direction.

4. The locking block according to claim 3, characterized in that: The angle between the overlapping area of ​​the front clamping portion and the side clamping portion and the front end face is 40°-50°.

5. The locking block according to any one of claims 1 to 4, characterized in that: The front end of the locking block is provided with a countersunk hole.

6. The locking block according to any one of claims 1 to 4, characterized in that: The locking block is in the shape of "m".

7. The locking block according to claim 6, characterized in that: A threaded hole is arranged in the middle of the rear end of the locking block.

8. A folding joint, characterized in that: It includes a first joint, a second joint, a handle, a pad, an adjusting rod, a compression spring and a locking block as described in any one of claims 1 to 7, wherein an eccentric wheel is provided at one end of the handle, an eccentric hole is provided on the eccentric wheel, one end of the first joint, one end of the second joint and the handle are hingedly connected, the pad is provided at one end of the adjusting rod, the locking block is provided at the other end of the adjusting rod, the pad is provided with an arc groove matching the eccentric wheel, one end of the compression spring abuts against the locking block, and the other end abuts against the first joint or the second joint, under the action of the compression spring, the arc groove of the pad fits against the eccentric wheel, the first joint is provided with a first clamping groove, the second joint is provided with a second clamping groove, and the pad and the adjusting rod are pushed by the handle to drive the locking block to clamp and lock with the first joint and the second joint.

9. The folding joint according to claim 8, characterized in that: The first clamping groove is arranged on both sides of the first joint, the side clamping part of the side of the locking block is embedded in the first clamping groove, the second clamping groove is arranged on the inner side of the other end of the second joint, and the front clamping part of the locking block is engaged with or disengaged from the second clamping groove.

10. The folding joint according to claim 9, characterized in that: It also includes a self-locking component, which includes a button and a reset spring. The handle is provided with a button slot, which extends to the eccentric wheel of the handle. The button and the reset spring are arranged in the button slot of the handle. The button is provided with a pressing part, a locking part and a pressed part. The locking part protrudes from the pressed part. One side of the hinged ear of the first joint is provided with a self-locking slot that cooperates with the locking part, and the edge of the hinged ear of the second joint is provided with a recess that cooperates with the pressed part.

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