CN219857482U - Folding joint - Google Patents

Abstract

The utility model discloses a folding joint which comprises a first joint, a second joint, a quick-release handle and a locking mechanism, wherein one side of the first joint, one side of the second joint and the quick-release handle are connected in a hinged mode through a hinge, the other side of the first joint and the other side of the second joint are provided with clamping grooves, the locking mechanism comprises a locking block, the locking block is arranged between the first joint and the second joint, the locking block is provided with a clamping part and a pressing part, the first joint is provided with an extending hole, the pressing part on the locking block extends out of the extending hole, the locking mechanism further comprises a spring, an adjusting rod and a bridge piece, the bridge piece is provided with a bridge hole, the bridge piece is fixed on the first joint, one end of the adjusting rod passes through the bridge hole on the bridge piece and is connected with the locking block, the spring is sleeved on the adjusting rod, one end of the locking rod abuts against the bridge piece, and the quick-release handle drives the adjusting rod through rotation of the spring. The folding joint disclosed by the utility model has the advantages of simple structure, convenience in installation and convenience in tightness adjustment.

Description

Folding joint

Technical Field

The utility model relates to a mechanical connection structure, in particular to a folding joint used on a folding bicycle and a folding electric bicycle.

Background

The folding bicycle is light and handy, small in size after folding, portable when going up and down an elevator, taking buses and sitting on subways, expandable in roads for use, convenient to travel, capable of being placed in a trunk of an automobile, capable of experiencing the convenience of the automobile during outing, and capable of enjoying riding in nature.

The folding joint is an important part on the folding bicycle, and the folding bicycle can realize the rapid folding or unfolding of the bicycle through the folding joint, so that the volume of the folding bicycle is reduced, and the storage or transportation of the bicycle is facilitated.

The Chinese patent document CN216153953U discloses a folding joint combining buckling and locking into a whole, which comprises a folder A, a folder B and an eccentric structure, wherein a joint rotating shaft at one end is hinged, a locking block and an elastic piece are arranged between the folder A and the folder B, a first lip slot and a second lip slot are respectively arranged at the free end and the inner parts of two sides of the folder A and the folder B corresponding to the locking block, the locking block is pushed by the elastic piece and is matched with the first lip slot and the second lip slot to buckle the folder A and the folder B, the locking block is further pushed by the eccentric structure and is extruded by the first lip slot and the second lip slot to lock the folder A and the folder B, the locking block is arranged in the first lip slot of the folder A and moves linearly along the joint rotating shaft and the free end direction of the folder A, one end of the locking block, which is close to the joint rotating shaft, is provided with an adjusting nut, the adjusting nut is internally provided with a through hole along the axis, one end close to the joint rotating shaft is provided with a counter bore, an elastic piece is arranged in the counter bore, one end of the adjusting nut close to the joint rotating shaft is provided with a guide rod, one side of the guide rod penetrates through the through hole of the adjusting nut, the other end of the guide rod is provided with a hole, the eccentric block is enveloped in the eccentric block, the outer part of the eccentric block is fixedly connected with a handle, when the handle is opened and the folder is closed, the guide rod is tightly attached to the eccentric block under the action of the elastic piece, the locking block is tightly attached to the free end of the folder A under the action of the elastic piece, the lip plane part of the locking block is matched with the plane part of a first lip slot of the folder A and is matched with the plane part of a second lip slot of the folder B, at the moment, the folder is pulled, the stress direction of the locking block is perpendicular to the motion direction, the locking block can not be unlocked, the eccentric block can be unlocked and opened only by manually pressing the locking block, and the eccentric block drives the guide rod when the handle is closed, the locking block is pushed to move towards the free end of the folder A by the adjusting nut, and the inclined surface part of the lip edge of the locking block respectively presses the inclined surface part of the first lip edge groove of the folder A and the inclined surface part of the second lip edge groove of the folder B, so that the folder is locked. When the tightness is adjusted by rotating the adjusting nut, the adjusting nut is arranged in the locking block, so that the adjusting nut is inconvenient to adjust, the guide rod, the adjusting nut and the elastic piece are arranged in the locking block, the locking block is required to be arranged in the folder A and the folder B, and the installation is inconvenient.

Disclosure of Invention

The utility model aims to provide a folding joint which is simple in structure, convenient to install and convenient to adjust tightness.

The technical scheme adopted by the folding joint disclosed by the utility model is as follows:

the utility model provides a folding joint, includes first joint, second joint, quick detach handle and locking mechanism, one side of first joint, one side of second joint and quick detach handle pass through the hinge and articulate, the opposite side of first joint, the opposite side of second joint are equipped with the draw-in groove, locking mechanism includes the latch segment, the latch segment is located between first joint and the second joint, be equipped with joint portion and pressing part on the latch segment, be equipped with on the first joint and stretch out the hole, pressing part on the latch segment stretches out from stretching out the hole, locking mechanism still includes spring, regulation pole and bridge piece, be equipped with the bridge hole on the bridge piece, the bridge piece is fixed in on the first joint, the bridge hole on the bridge piece is passed to the one end of regulation pole is connected with the latch segment, on the regulation pole is located to the spring housing, its one end butt bridge piece, quick detach handle is through its rotation drive regulation pole.

As a preferable scheme, the bridge hole on the bridge piece is a through hole, and the adjusting rod is in threaded connection with the locking block.

As the preferable scheme, locking mechanism still includes the tight piece of top, the tight piece of top is fixed in the other end of adjusting the pole, quick detach handle is equipped with eccentric cam, the tight piece of top is equipped with quick detach handle's eccentric cam complex cambered surface.

As a preferable scheme, the jacking block is fixed at one end of the adjusting rod through a screw, a convex part is arranged on the side edge of the jacking block, a groove is arranged on the first joint, and the groove is matched with the convex part on the jacking block.

As the preferred scheme, be equipped with the button groove on the quick detach handle, be equipped with reset spring and button in the button groove, reset spring one end butt button groove bottom, the other end butt button, be equipped with pressurized part and lock joint portion on the button, the second connects in pressing in the button groove with the pressurized part of button, be equipped with on the first joint and hold in the palm the portion for hold in the palm the lock joint portion of top button.

Preferably, the locking part can extend out of the button groove.

The folding joint disclosed by the utility model has the beneficial effects that: after the first connector and the second connector are closed, the locking mechanism locks the first connector and the second connector under the action of elastic force of the reset elastic piece, so that the effect of automatic locking of the first connector and the second connector is achieved, even if the quick-release handle is loosened carelessly, the first connector and the second connector can be locked under the action of the reset elastic piece, and the safety and the reliability are high.

Drawings

FIG. 1 is a schematic perspective view of a folding joint of the present utility model;

FIG. 2 is an exploded view of the folding joint of the present utility model;

FIG. 3 is a schematic view of the structure of a first joint of the folding joint of the present utility model;

FIG. 4 is a schematic view of the handle structure of the folding joint of the present utility model;

fig. 5 is an exploded schematic view of the handle structure of the folding joint of the present utility model.

Detailed Description

The utility model is further illustrated and described below in conjunction with the specific embodiments and the accompanying drawings:

referring to fig. 1 and 2, a folding joint includes a first joint 10, a second joint 20, a handle structure 30, and a locking mechanism 40, wherein the locking mechanism 40 is disposed between the first joint 10 and the second joint 20.

Referring to fig. 3, a first hinge lug is disposed on one side of the first connector 10, a first hinge hole is disposed on the first hinge lug, a first clamping groove and an extending hole are disposed on the other side of the first hinge lug, a supporting portion is further disposed on the first connector 10, and a bridge groove and a groove are disposed on an end face of the first connector 10.

A second hinge lug is arranged on one side of the second connector 20, a second hinge hole is arranged on the second hinge lug, and a second clamping groove is arranged on the other side of the second hinge lug.

Referring to fig. 4 and 5, the handle structure 30 includes a quick release handle 31, a button 32 and a return spring 33, one end of the quick release handle 31 is provided with an eccentric cam, an eccentric hole is provided on the eccentric cam, a button slot is provided on the quick release handle 31, a portion of the button slot extends to the eccentric cam, the button 32 and the return spring 33 are disposed in the button slot, one end of the return spring 33 is abutted to the bottom of the button slot, the other end is abutted to the button 32, a spring slot is provided on the button 32, the return spring 33 is provided with a spring slot, a pressed portion and a locking portion are provided on the other side, the locking portion protrudes from the pressed portion and is used for protruding from the button slot, and an extension portion is provided on the pressed portion and is used for improving the lateral acting force of the button 32 on the quick release handle 30.

The first joint 10, the second joint 20 and the quick release handle 31 are hinged by a hinge shaft 50 passing through the first hinge hole, the second hinge hole and the eccentric hole, and the second hinge lug presses the pressed part of the button into the button groove to prevent the button 32 from being separated from the quick release handle 31 under the action of the return spring.

The locking mechanism 40 comprises a locking block 41, a spring 42, an adjusting rod 43, a screw 44, a propping block 46 and a bridge piece 45, wherein a clamping part and a pressing part are arranged on the locking block 41, the pressing part on the locking block 41 extends out of the extending hole of the first joint 10, the bridge piece 45 is provided with a bridge hole, the bridge hole is a through hole, the bridge piece 45 is arranged in a bridge piece groove of the end face of the first joint and is fixed on the first joint through the locking screw, one end of the adjusting rod 43 passes through the bridge hole on the bridge piece 45 to be in threaded connection with the locking block 41, the spring 42 is sleeved on the adjusting rod 43, one end of the spring is propped against the bridge piece 45, the other end of the spring is propped against the locking block 41, the propping block 46 is fixed on the other end of the adjusting rod 43 through the screw 44, the propping block 46 can rotate relative to the adjusting rod 43, the side of the propping block 46 is provided with an arc surface matched with the eccentric cam, the protruding part is arranged on the side of the propping block 46, the protruding part is arranged in a groove of the first joint, one end of the adjusting rod 43 is fixed on the first joint through the locking screw, one end of the protruding part is arranged in the groove, and the propping block 46 is in the cam groove due to the arc surface.

The locking piece 41 moves to the other side of the first connector 10 and the second connector 20 under the action of the spring 42, the locking piece 41 is clamped with the first connector 10 and the second connector 20, the locking of the first connector 10 and the second connector 20 is achieved, the quick release handle rotates, the locking part of the button 32 rotates along the supporting part on the first connector 10, the supporting part on the first connector abuts against the locking part of the button 32, the locking of the quick release handle 31 is achieved, the pressing part of the locking piece 41 extends out of the extending hole of the first connector 10, at the moment, the eccentric cam of the quick release handle 31 locks the locking piece 41 with the first connector 10 and the second connector 20 through the jacking piece 46 and the adjusting rod 43, and at the moment, the pressing part is not moved, so that the self-locking effect is achieved. When the folding joint needs to be unfolded, the button 32 is pressed, the locking part of the button 32 is pressed into the button groove, at the moment, the holding part of the first joint is separated from the locking part of the button 32, the quick release handle 31 is rotated, the eccentric cam is separated from the pushing block 46, the locking block 41 is still connected with the first joint 10 and the second joint 20 in a clamping way under the action of the spring 42, the pressing part on the locking block 41 is pressed, the clamping part of the locking block 41 is separated from the first joint 10 and the second joint 20, and the first joint 10 and the second joint 20 can be unfolded.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (6)

1. The utility model provides a folding joint, includes first joint, second joint, quick detach handle and locking mechanism, one side of first joint, one side of second joint and quick detach handle pass through the hinge and articulate, the opposite side of first joint, the opposite side of second joint are equipped with the draw-in groove, locking mechanism includes the latch segment, the latch segment is located between first joint and the second joint, be equipped with joint portion and pressing part on the latch segment, be equipped with on the first joint and stretch out the hole, pressing part on the latch segment stretches out from stretching out the hole, a serial communication port, locking mechanism still includes spring, regulation pole and bridge piece, be equipped with the bridge hole on the bridge piece, the bridge piece is fixed in on the first joint, the bridge hole on the bridge piece is passed to the one end of regulation pole is connected with the latch segment, on the regulation pole is located to the spring housing, its one end butt bridge piece, the quick detach handle is through its rotation drive regulation pole.

2. The folding joint of claim 1, wherein the bridge opening in the bridge piece is a through hole, and the adjusting rod is in threaded connection with the locking block.

3. The folding joint according to claim 1 or 2, wherein the locking mechanism further comprises a tightening block fixed to the other end of the adjusting rod, the quick release handle is provided with an eccentric cam, and the tightening block is provided with an arc surface matched with the eccentric cam of the quick release handle.

4. A folding joint according to claim 3, wherein the tightening block is fixed to one end of the adjusting rod by a screw, a protrusion is provided on a side of the tightening block, a groove is provided on the first joint, and the groove is matched with the protrusion on the tightening block.

5. The folding joint according to claim 1 or 2, wherein the quick release handle is provided with a button groove, a return spring and a button are arranged in the button groove, one end of the return spring is abutted against the bottom of the button groove, the other end of the return spring is abutted against the button, the button is provided with a pressed part and a locking part, the pressed part of the button is pressed into the button groove by the second joint, and the first joint is provided with a holding part for holding the locking part of the push button.

6. The folding joint of claim 5 wherein the locking portion is extendable from the button slot.