Folding joint locking mechanism

Abstract

Disclosed in the present invention is a folding joint locking mechanism, comprising a front joint and a rear joint, wherein one side of one end of the front joint is hinged to one side of one end of the rear joint. The folding joint locking mechanism further comprises a locking sleeve, a locking rod seat, a locking rod and a transmission rod, wherein the front joint is provided with a front connection hole, the locking sleeve is fixedly arranged in the front connection hole, the rear joint is provided with a rear connection hole, the locking rod seat is fixedly arranged in the rear connection hole, the locking rod is rotationally arranged in the locking rod seat, and the transmission rod drives the locking rod to rotate, such that the locking rod in the locking rod seat is detachably connected to the locking sleeve, allowing the front joint and the rear joint to be locked or unfolded. The folding joint locking mechanism disclosed in the present invention is convenient to operate and has a reliable structure.

Description

Folding joint locking mechanism Technical Field

[0001] The present invention relates to the fields of bicycles, scooters and motorcycles, and in particular to a folding joint locking mechanism used on bicycles, scooters and motorcycles. Background Art

[0002] Bicycles, scooters and motorcycles are traditional means of transportation, and nowadays they are also leisure and sports tools. Especially with the improvement of modern life quality, sports and leisure are valued by people. Their unique sportiness and leisure are loved by modern people. In order to facilitate carrying at home or going out, bicycles, scooters and motorcycles are made into foldable structures, that is, folding bicycles, folding scooters and folding motorcycles are very popular. Combined with cars, their maneuverability is improved, their activity area is wider, and the entertainment and leisure of riding are enhanced.

[0003] Utility Model Content

[0004] The object of the present invention is to provide a folding joint locking mechanism which is easy to operate and has a reliable structure.

[0005] The technical solution adopted by the folding joint locking mechanism disclosed in the present invention is:

[0006] A folding joint locking mechanism includes a front joint and a rear joint, one side of one end of the front joint and one side of one end of the rear joint are hingedly connected, and also includes a locking sleeve, a locking rod seat, a locking rod and a transmission rod, the front joint is provided with a front connection hole, the locking sleeve is fixed in the front connection hole, the rear joint is provided with a rear connection hole, the locking rod seat is fixed in the rear connection hole, the locking rod is rotatably provided in the locking rod seat, and the transmission rod drives the locking rod to rotate, so that the locking rod in the locking rod seat is detachably connected to the locking sleeve, thereby locking or unfolding the front joint and the rear joint.

[0007] As a preferred solution, the locking sleeve is provided with an internal threaded hole, the internal threaded hole is provided with two half threads, one end of the locking rod is provided with two separated half threads, and the thread of this end of the locking rod corresponds to the internal threaded hole of the locking sleeve.

[0008] As a preferred solution, one end of the front joint is provided with a bevel, one end of the rear joint is provided with a bevel, and the bevel on the front joint is coupled with the bevel on the rear joint; or the end surface of the lock sleeve is provided with a bevel, the end surface of the lock rod seat is provided with a bevel, and the bevel of the lock sleeve is coupled with the bevel of the lock rod seat.

[0009] As a preferred solution, one end of the transmission rod is provided with a polygonal ball head, and the corresponding end of the locking rod is provided with a polygonal hole, and the polygonal hole matches the shape of the polygonal ball head.

[0010] As a preferred solution, the transmission rod drives the locking rod through a universal joint, one end of the locking rod is fixedly connected to one end of the universal joint, and the other end of the universal joint is connected to the transmission rod.

[0011] As a preferred solution, the folding joint locking mechanism further includes an adjusting nut, the locking rod is provided with an adjusting thread, the locking rod passes through the locking rod seat and is threadedly connected to the adjusting nut via the adjusting thread.

[0012] As a preferred solution, the folding joint locking mechanism further includes an adjusting spring, and the locking rod is further provided with a boss, one end of the adjusting spring abuts against the boss, and the other end abuts against the locking rod seat.

[0013] As a preferred solution, a boss is provided on the transmission rod, and a spring is sleeved on the transmission rod. One end of the spring abuts against the boss, and the other end abuts against the inner wall of the rear joint. The spring is used to tend to move the transmission rod toward the locking rod.

[0014] As a preferred solution, a handle is provided on the transmission rod.

[0015] As a preferred solution, the folding joint locking mechanism is further provided with a safety buckle, which is rotatably covered over the handle.

[0016] The beneficial effects of the folding joint locking mechanism disclosed in the present invention are: the transmission rod drives the locking rod to rotate, so that the locking rod in the locking rod seat is threadedly connected or released from the locking sleeve, thereby locking or unfolding the front joint and the rear joint, which is easy to operate and has a reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a diagram of a foldable bicycle in a rideable state according to a first embodiment of the present invention.

[0018] FIG2 is a diagram of the folding bicycle in the folding state according to the first embodiment of the present invention.

[0019] FIG3 is an exploded schematic diagram of the folding mechanism in the first embodiment of the present invention.

[0020] FIG4 is a schematic diagram of the assembly of the folding mechanism in the first embodiment of the present invention.

[0021] FIG5 is a schematic cross-sectional view of the assembly of the folding mechanism in the first embodiment of the present invention.

[0022] FIG6 is a diagram of the foldable bicycle in a rideable state according to the second embodiment of the present invention.

[0023] FIG7 is a diagram of the folding bicycle in the second embodiment of the present invention in a folded state.

[0024] FIG8 is an exploded schematic diagram of the folding mechanism in the second embodiment of the present invention.

[0025] FIG9 is a schematic diagram of the assembly of the folding mechanism in the second embodiment of the present invention.

[0026] FIG10 is a schematic cross-sectional view of the assembly of the folding mechanism in the second embodiment of the present invention.

[0027] FIG11 is a partial schematic diagram of the transmission rod in the second embodiment of the present invention.

[0028] FIG12 is a schematic diagram of a locking rod and a transmission rod formed into one piece in the third embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings:

[0030] Example 1:

[0031] As shown in Figure 1-5, a folding joint locking mechanism includes a front joint 1, a rear joint 2 and a locking mechanism, wherein the front joint 1 is a part of the front section of the frame or a component fixedly connected thereto, and the rear joint 2 is a part of the rear section of the frame or a component fixedly connected thereto. One side of one end of the front joint 1 and one side of one end of the rear joint 2 are hinged together by a hinge shaft 3 so that the front joint 1 and the rear joint 2 can rotate relative to each other to realize the opening and closing action of the joint group.

[0032] The front joint 1 is provided with a front connection hole 101 at this end, in which the lock sleeve 4 is fixed; the rear joint 2 is provided with a rear connection hole 201 at this end, in which the lock rod seat 5 is fixed; the transmission rod 7 is sleeved in the internal hole 202 of the rear frame; the lock rod 6, the adjustment spring 13, the lock rod seat 5, the adjustment nut 14, the universal joint 9, the transmission rod 7, the spring 8, the handle 10 and the screw 11 are sequentially arranged together, wherein the pin hole 603 in the lock rod 6 and the pin hole 903 in the universal joint 9 are locked together by the pin shaft 12, wherein the hexagonal hole 902 in the universal joint 9 and the hexagonal hole in the transmission rod are locked together. The hexagonal head 702 of the locking sleeve 4 is sleeved together, wherein the other hexagonal head 701 in the transmission rod 7 and the hexagonal hole 1001 in the handle 10 are sleeved together, and the two are locked with a screw 11; the inner side of the locking sleeve 4 is provided with one or more bosses 401, and the outer side of the locking rod 6 is provided with one or more bosses 601, and the bosses 401 in the locking sleeve 4 and the bosses 601 in the locking rod 6 can engage or disengage with each other; the universal joint 9 has the function of adjusting the angle to transmit torque, so that the handle 10 can be set in a position convenient for operation;

[0033] As a preferred embodiment, in the folding joint locking mechanism, the boss 401 in the locking sleeve 4 and the boss 601 in the locking rod 6 are semi-threaded, so that after the handle 10 drives the transmission rod 7 to rotate approximately 90 degrees, the boss 401 in the locking sleeve 4 and the boss 601 in the locking rod 6 can engage or disengage with each other. Specifically, the boss 401 in the locking sleeve 4 is two semi-internal threads, and the boss 601 is two semi-external threads that cooperate with the boss 401. The boss 401 and the boss 601 are threadedly connected to each other to achieve the engagement and disengagement of the locking sleeve 4 and the locking rod 6, and the semi-threads facilitate the engagement and disengagement of the locking sleeve 4 and the locking rod 6. As a preferred embodiment, the threads on the boss 401 and the boss 601 can be threads with a first turn having a pitch or a certain inclination angle, preferably an inclination angle of 1-5 degrees, and the remaining turns have an inclination angle of 0 degrees.

[0034] As a preferred embodiment, in the folding joint locking mechanism, one end of the locking rod seat 5 includes a bevel 501, and the hole 101 in the front joint 1 includes a bevel 102. The two bevels can be coupled with each other in a concave-convex manner, so that the joint group is not easily displaced from each other in the locked state; in other embodiments, a bevel can be set at one end of the front joint and a bevel can be set at one end of the rear joint, so that the bevel on the front joint and the bevel on the rear joint are coupled correspondingly to achieve the same effect.

[0035] As a preferred embodiment, in the folding joint locking mechanism, the adjusting nut 14 is sleeved on the adjusting thread 602 in the locking rod 6, and the adjusting spring 13 is sleeved on the locking rod 6, with one end thereof abutting against the boss 601 on the locking rod 6 and the other end abutting against the inner hole of the locking rod seat 5. When the adjusting nut 14 is rotated, the relative position between the locking rod 6 and the locking rod seat 5 can be adjusted, so that the bite force between the locking rod 6 and the locking sleeve 4 can be adjusted;

[0036] As a preferred embodiment, in the folding joint locking mechanism, the transmission rod 7 has a boss 703, one end of the spring 8 abuts against it, and the other end abuts against one end of the hole 202 inside the rear frame. The spring 8 prevents the transmission rod 7 from being separated from the universal joint 9.

[0037] As a preferred embodiment, in the folding joint locking mechanism, a screw 18, a safety buckle 17 and a torsion spring 16 are provided on the side of the handle 10, which are sequentially mounted on the boss 15 in the rear frame, wherein the screw 18 is fixedly locked on the boss 15; under the action of the torsion spring 16, the safety buckle 17 is on the motion trajectory to the side of the handle 10 when not operated manually, thereby preventing the entire locking mechanism from loosening.

[0038] Example 2:

[0039] As shown in Figure 6-11, a folding joint locking mechanism includes a front joint 21, a rear joint 22 and a locking mechanism, wherein the front joint 21 is a part of the front section of the frame or a component fixed thereto, and the rear joint 22 is a part of the rear section of the frame or a component fixed thereto, and the front joint 21 and the rear joint 22 are hinged together by a hinge shaft 23 so that the front joint 21 and the rear joint 22 can rotate with each other to realize the opening and closing action of the joint group; a front connection hole 2101 is provided on one side of one end of the front joint 21, wherein the locking sleeve 24 is fixed therein; a rear connection hole 2201 is provided on one side of one end of the rear joint 22, wherein the locking rod seat 25 is fixed therein; the transmission rod 27 is provided in the internal hole 2202 of the rear frame; the locking rod seat 25, the locking rod 26, the transmission rod 27, the spring 28, the O-ring 29, the handle 30 and the screw 31 are sequentially arranged together, wherein the locking rod 26 The hexagonal hole 2602 and the hexagonal head 2702 in the transmission rod are sleeved together, wherein another hexagonal head 2701 in the transmission rod 27 and the hexagonal hole 3001 in the handle 30 are sleeved together, and the two are locked with a screw 31; one or more bosses 2401 are provided on the inner side of the locking sleeve 24, and one or more bosses 2601 are provided on the outer side of the locking rod 26, and the bosses 2401 in the locking sleeve 24 and the bosses 2601 in the locking rod 26 can be engaged with or separated from each other; the hexagonal head 2702 in the transmission rod 27 is a curved hexagonal type, please refer to Figure 11, and it is coupled with the hexagonal hole 2602 in the locking rod 26, and has the function of transmitting torque at a variable angle, so that the handle 30 can be set in a position that is convenient for operation. If the space is suitable, the transmission rod 27 and the locking rod 26 can be made into one piece, please refer to 46 shown in Figure 12. In other embodiments, the hexagonal head in the transmission rod 27 may also be configured as a polygonal head of other shapes for easy driving, and the hexagonal hole in the locking rod 26 may be correspondingly configured as a polygonal hole that matches the polygonal head.

[0040] As a preferred embodiment, in the folding joint locking mechanism, the boss 2401 in the locking sleeve 24 and the boss 2601 in the locking rod 26 are threaded, so that after the handle 30 drives the transmission rod 27 to rotate several times, the boss 2401 in the locking sleeve 24 and the boss 2601 in the locking rod 26 can engage or disengage with each other;

[0041] As a preferred embodiment, in the folding joint locking mechanism, one end of the lock rod seat 25 includes a bevel 2501 (if the lock rod seat is integrally formed with the rear joint, this bevel can be included on the rear joint), and the lock sleeve 24 includes a bevel 2402 (if the lock sleeve is integrally formed with the front joint, this bevel can be included on the front joint). The two bevels can be coupled to each other in a concave-convex manner, so that the joint assembly is not easily displaced when locked;

[0042] As a preferred embodiment, in the folding joint locking mechanism, the transmission rod 27 has a boss 2704 that abuts one end of the lock rod 26, thereby securing the two relative positions. The transmission rod 27 also has another boss 2703, against which one end of a spring 28 abuts, while the other end abuts one end of a hole 2202 in the rear frame. The spring 28 prevents the transmission rod 27 and the lock rod 26 from disengaging.

[0043] As a preferred solution, in the folding joint locking mechanism, the O-ring 29 is sleeved in the groove 2203 in the internal hole 2202 of the rear frame. It has an interference fit with the transmission rod 27 and the groove 2203. Its elasticity ensures that the transmission rod will not rotate in the absence of external force, thereby preventing the entire locking mechanism from loosening.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the directions (front, middle, rear, top and bottom, etc.) and component names in the embodiments, as well as the technical solutions, can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention. Moreover, the structure of the present invention can also be used in any part of bicycles, scooters and motorcycles to achieve the folding function of the frame and other parts, which should also be within the scope of protection of this invention.

Claims

1. A folding joint locking mechanism, comprising a front joint and a rear joint, wherein one side of one end of the front joint and one side of one end of the rear joint are hingedly connected, characterized in that: It also includes a locking sleeve, a locking rod seat, a locking rod and a transmission rod, the front joint is provided with a front connecting hole, the locking sleeve is fixed in the front connecting hole, the rear joint is provided with a rear connecting hole, the locking rod seat is fixed in the rear connecting hole, the locking rod is rotatably provided in the locking rod seat, and the transmission rod drives the locking rod to rotate, so that the locking rod in the locking rod seat is detachably connected to the locking sleeve, thereby locking or unfolding the front joint and the rear joint.

2. The folding joint locking mechanism according to claim 1, wherein: The locking sleeve is provided with an internal threaded hole, in which two half threads are provided. One end of the locking rod is provided with two separated half threads, and the threads of the end of the locking rod correspond to the internal threaded hole of the locking sleeve.

3. The folding joint locking mechanism according to claim 1, wherein: One end of the front joint is provided with a bevel, and one end of the rear joint is provided with a bevel, and the bevel on the front joint is correspondingly coupled with the bevel on the rear joint; or the end surface of the lock sleeve is provided with a bevel, and the end surface of the lock rod seat is provided with a bevel, and the bevel of the lock sleeve is correspondingly coupled with the bevel of the lock rod seat.

4. The folding joint locking mechanism according to claim 1, wherein: One end of the transmission rod is provided with a polygonal ball head, and the corresponding end of the locking rod is provided with a polygonal hole, and the polygonal hole matches the shape of the polygonal ball head.

5. The folding joint locking mechanism according to claim 1, wherein: The transmission rod drives the locking rod through a universal joint. One end of the locking rod is fixedly connected to one end of the universal joint, and the other end of the universal joint is connected to the transmission rod.

6. The folding joint locking mechanism according to claim 5, wherein: It also includes an adjusting nut. The locking rod is provided with an adjusting thread. The locking rod passes through the locking rod seat and is threadedly connected to the adjusting nut through the adjusting thread.

7. The folding joint locking mechanism according to claim 6, wherein: It also includes an adjusting spring. The lock rod is also provided with a boss. One end of the adjusting spring abuts against the boss, and the other end abuts against the lock rod seat.

8. The folding joint locking mechanism according to any one of claims 1 to 7, characterized in that: The transmission rod is provided with a boss, and a spring is sleeved on the transmission rod. One end of the spring abuts against the boss, and the other end abuts against the inner wall of the rear joint. The spring is used to make the transmission rod move toward the locking rod.

9. The folding joint locking mechanism according to claim 1, wherein: The transmission rod is provided with a handle.

10. The folding joint locking mechanism according to claim 9, wherein: A safety buckle is also provided, and the safety buckle is rotatably covered above the handle.

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