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CN-224225220-U - Folding joint

CN224225220UCN 224225220 UCN224225220 UCN 224225220UCN-224225220-U

Abstract

The utility model provides a folding joint, which comprises an upper joint, a lower joint and a lock bolt, wherein the upper joint and the lower joint are respectively provided with a first inner tooth hole and a second inner tooth hole, the outer surface of the lock bolt is provided with meshing teeth matched with the first inner tooth hole and the second inner tooth hole, the lock bolt can axially move on the first inner tooth hole and the second inner tooth hole, the folding joint is characterized by also comprising an elastic resetting piece and a limit column arranged on the surface of the lock bolt, the elastic reset piece is arranged between the lock plunger and the upper joint or the lower joint, one end of the elastic reset piece is abutted against the limit column, the other end of the elastic reset piece is abutted against the inner side of the upper joint, the limit column can overcome the elasticity of the elastic reset piece to enable the lock plunger to axially move relative to the upper joint or the lower joint, and when the meshing teeth on the lock plunger surface are disengaged from the first internal tooth holes, the upper joint and the lower joint can relatively rotate. The folding joint disclosed by the utility model is simple in structure and convenient to operate.

Inventors

  • CAO HUI
  • WANG SIYONG

Assignees

  • 东莞富厚自行车零件有限公司

Dates

Publication Date
20260512
Application Date
20250616

Claims (10)

  1. 1. The utility model provides a folding joint, includes top connection, lower clutch and lock plunger, top connection and lower clutch are equipped with first interior tooth hole and second interior tooth hole respectively, the surface of lock plunger is equipped with the meshing tooth with first interior tooth hole and second interior tooth hole matched with, the lock plunger can be on first interior tooth hole and second interior tooth hole axial displacement, its characterized in that still includes elastic return piece and sets up the spacing post in the lock plunger surface, elastic return piece locates between lock plunger and top connection or the lower clutch, elastic return piece's one end and spacing post looks butt, the inboard looks butt of top connection of the other end, spacing post can overcome elastic return piece's elasticity makes lock plunger axial displacement for top connection or lower clutch, when the meshing tooth of lock plunger surface breaks away from meshing cooperation with first interior tooth hole, top connection and lower clutch can relative rotation.
  2. 2. The folding joint of claim 1 wherein the upper joint is provided with a left clamp portion and a right clamp portion, the lower joint is provided with a connecting portion, the connecting portion is disposed between the left clamp portion and the right clamp portion, the first internal tooth aperture is disposed on the left clamp portion and the right clamp portion, the second internal tooth aperture is disposed on the connecting portion, and the lock bolt is disposed between the left clamp portion and the right clamp portion.
  3. 3. The folding joint of claim 1 wherein the outer surface of the latch is provided with annular surfaces, the annular surfaces and the engagement teeth are alternately spaced apart from each other on the surface of the latch, and the diameter of the annular surfaces is no greater than the diameter of the root circle of the engagement teeth.
  4. 4. A folding joint according to claim 3, wherein the lock bolt has a conical outer surface, two ends of the lock bolt are respectively provided with a pressing end and an anti-falling end, and the diameter of the pressing end is smaller than that of the anti-falling end.
  5. 5. The folding joint of claim 4, wherein the pressing end of the lock bolt is screwed with a limit seat, the limit seat comprises a limit cover and a base, and the diameter of the limit cover is larger than that of the first inner tooth hole.
  6. 6. The folding joint of claim 1 wherein the lower joint has a recess on an inner side thereof, the recess of the lower joint and the tooth slot of the latch surface forming a receiving cavity, and the resilient return member is movably disposed in the receiving cavity.
  7. 7. The folding joint of claim 6, further comprising a loop bar, wherein the loop bar comprises a head and a bar, the elastic restoring member is sleeved on the bar and is arranged in the accommodating cavity, one end of the elastic restoring member is abutted against the head, and the head of the loop bar is abutted against the inner side surface of the upper joint.
  8. 8. The folding joint of claim 1 wherein the surface of the latch is provided with a mounting hole and the limit post is mounted in the mounting hole.
  9. 9. The folding joint of claim 8 wherein the lower joint is provided with a through hole that communicates with the mounting hole.
  10. 10. The folding joint of claim 1 wherein two sides of the lower joint are provided with a support block, and the top of the support block is provided with an arc-shaped groove.

Description

Folding joint Technical Field The utility model relates to the technical field of accessories of bicycles, electric bicycles and scooters, in particular to a folding joint. Background With the acceleration of the urban process and the pursuit of people to environmental protection trip modes, foldable equipment such as foldable bicycles and foldable electric vehicles is favored by more and more consumers. Through the design of folding joint, can reduce the volume fast when not using for these equipment, conveniently store and transport, also be convenient for the user simultaneously uses under different scenes. The existing folding joint can only realize simple folding and locking functions, so that a user is difficult to adjust to the most comfortable position according to the height or the spreading arm, riding habit or road condition of the user in the use process, riding experience of the user can be influenced, and at the moment, the folding joint capable of adjusting the angle between the vertical pipe and the frame is needed, so that requirements of different users are met. For example, in chinese patent document CN214189960U, a handlebar stem folding joint is disclosed, which comprises a lower joint and an upper joint connected by a locking device, wherein the joint surfaces of the lower joint and the upper joint are respectively provided with uniformly distributed concave-convex matching dents along the radial direction, the locking device comprises a pull rod, an eccentric handle and a nut, the pull rod passes through a central through hole of the lower joint and the upper joint, the tail end of the pull rod is connected with the eccentric handle, the front end of the pull rod is connected with the nut, a spring is sleeved on the periphery of the pull rod, and two ends of the spring are respectively abutted against the inner sides of the lower joint and the upper joint. The lower connector and the upper connector of the handlebar standpipe folding connector are matched through the insection pressing, the upper connector and the lower connector are locked through the locking device, when a certain angle is required to be adjusted, the lower connector and the upper connector can be separated by a certain distance under the action of the elastic force of the spring after the locking device is loosened, and the upper connector can be locked and buckled on the lower connector again after the upper connector is rotated to a certain angle. However, when the angle is adjusted, the eccentric handle is required to be manually loosened for unlocking, then the eccentric handle is locked again after the angle is adjusted, so that the operation steps are complex and not convenient enough. Disclosure of utility model The utility model aims to provide a folding joint which is simple in structure and convenient to operate. The technical scheme adopted by the folding joint disclosed by the utility model is as follows: The utility model provides a folding joint, includes top connection, lower clutch and lock plunger, top connection and lower clutch are equipped with first interior tooth hole and second interior tooth hole respectively, the surface of lock plunger is equipped with the meshing tooth with first interior tooth hole and second interior tooth hole matched with, the lock plunger can be on first interior tooth hole and second interior tooth hole axial displacement, still includes elastic return piece and sets up in the spacing post of lock plunger surface, elastic return piece locates between lock plunger and top connection or the lower clutch, elastic return piece's one end and spacing post looks butt, the inboard looks butt of the other end and top connection, the spacing post can overcome elastic return piece's elasticity makes lock plunger axial displacement for top connection or lower clutch, when the meshing tooth of lock plunger surface breaks away from meshing cooperation with first interior tooth hole, top connection and lower clutch can relative rotation. As a preferable scheme, the upper joint is provided with a left clamping part and a right clamping part, the lower joint is provided with a connecting part, the connecting part is arranged between the left clamping part and the right clamping part, the first inner tooth hole is positioned on the left clamping part and the right clamping part, the second inner tooth hole is positioned on the connecting part, and the lock plunger is positioned between the left clamping part and the right clamping part. Preferably, the outer surface of the lock plunger is provided with a circular ring surface, the circular ring surface and the meshing teeth are alternately arranged on the surface of the lock plunger at intervals, and the diameter of the circular ring surface is not larger than the diameter of the root circle of the meshing teeth. As a preferable scheme, the appearance of the lock plunger is frustum-shaped, two ends of the lock plunger are respectivel