Folding joint locking mechanism

Abstract

The invention discloses a folding joint locking mechanism which comprises a front joint and a rear joint, 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 lock sleeve, a lock rod seat, a lock rod and a transmission rod, the front joint is provided with a front connecting hole, the lock sleeve is fixedly arranged in the front connecting hole, the rear joint is provided with a rear connecting hole, and the lock sleeve is fixedly arranged in the rear connecting hole. The lock rod seat is fixedly arranged in the rear connecting hole, the lock rod is rotatably arranged in the lock rod seat, and the transmission rod drives the lock rod to rotate, so that the lock rod in the lock rod seat is detachably connected with the lock sleeve, and the front connector and the rear connector are locked or unfolded. The folding joint locking mechanism disclosed by the invention is convenient to operate and reliable in structure.

Description

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 deeply loved by people. Together with cars, their mobility is improved, their activity area is wider, and the entertainment and leisure of riding are enhanced. Summary of the invention

[0003] The object of the present invention is to provide a folding joint locking mechanism which is easy to operate and has a reliable structure.

[0004] The technical solution adopted by the folding joint locking mechanism disclosed in the present invention is:

[0005] A folding joint locking mechanism comprises 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, and 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 rotatably arranged 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.

[0006] 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.

[0007] As a preferred solution, 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.

[0008] 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.

[0009] 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.

[0010] 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 threadably connected to the adjusting nut via the adjusting thread.

[0011] 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.

[0012] 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.

[0013] As a preferred solution, a handle is provided on the transmission rod.

[0014] As a preferred solution, the folding joint locking mechanism is further provided with a safety buckle, and the safety buckle is rotatably covered above the handle.

[0015] The beneficial effect of the folding joint locking mechanism disclosed in the present invention is that 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, and the front joint and the rear joint are locked or unfolded, which is easy to operate and has a reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the foldable bicycle in the first embodiment of the present invention in a rideable state.

[0017] Figure 2 This is a diagram of a folding bicycle in the first embodiment of the present invention in a folding state.

[0018] Figure 3 It is an exploded schematic diagram of the folding mechanism in the first embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the assembly of the folding mechanism in the first embodiment of the present invention.

[0020] Figure 5 It is a schematic diagram of the assembly and sectioning of the folding mechanism in the first embodiment of the present invention.

[0021] Figure 6 This is a diagram of a foldable bicycle in a rideable state in the second embodiment of the present invention.

[0022] Figure 7 This is a diagram of a folding bicycle in the second embodiment of the present invention in a folding state.

[0023] Figure 8 It is an exploded schematic diagram of the folding mechanism in the second embodiment of the present invention.

[0024] Fig. 9 It is a schematic diagram of the assembly of the folding mechanism in the second embodiment of the present invention.

[0025] Fig.10 It is a schematic diagram of the assembly and sectioning of the folding mechanism in the second embodiment of the present invention.

[0026] Fig.11 It is a partial schematic diagram of the transmission rod in the second embodiment of the present invention.

[0027] Fig.12 It is a schematic diagram of the locking rod and the transmission rod being integrated into one piece in the third embodiment of the present invention. DETAILED DESCRIPTION

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

[0029] Embodiment 1:

[0030] like Figure 1-5 A folding joint locking mechanism comprises a front joint 1, a rear joint 2 and a locking mechanism, wherein the front joint 1 is a part of a front section of a vehicle frame or a component fixed thereto, the rear joint 2 is a part of a rear section of a vehicle frame or a component fixed 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.

[0031] The front joint 1 is provided with a front connection hole 101 at this end, and the lock sleeve 4 is fixed therein; the rear joint 2 is provided with a rear connection hole 201 at this end, and the lock rod seat 5 is fixed therein; the transmission rod 7 is sleeved in the inner 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 fixedly locked together by the pin shaft 12, wherein the hexagonal hole 902 in the universal joint 9 and the hexagonal hole 903 in the transmission rod The hexagonal head 702 of the locking rod 7 is sleeved together, wherein another 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; one or more bosses 401 are provided on the inner side of the locking sleeve 4, and one or more bosses 601 are provided on the outer side of the locking rod 6, and the bosses 401 in the locking sleeve 4 and the bosses 601 in the locking rod 6 can be engaged with or separated from each other; the universal joint 9 has the function of transmitting torque at an adjustable angle, so that the handle 10 can be set at a convenient position for operation;

[0032] As a preferred solution, in the folding joint locking mechanism, the boss 401 in the lock sleeve 4 and the boss 601 in the lock rod 6 are semi-threaded, so that after the handle 10 drives the transmission rod 7 to rotate about 90 degrees, the boss 401 in the lock sleeve 4 and the boss 601 in the lock rod 6 can engage or separate with each other; specifically, the boss 401 in the lock sleeve 4 is two semi-internal threads, and the boss 601 is two semi-external threads that cooperate with the boss 401. The engagement and separation of the lock sleeve 4 and the lock rod 6 are achieved through the threaded connection of the boss 401 and the boss 601, and the engagement and separation of the lock sleeve 4 and the lock rod 6 are facilitated by the semi-thread. As a preferred solution, the threads on the boss 401 and the boss 601 can be threads with a lift or a certain inclination in the first circle, preferably with an inclination of 1-5°, and the other threads are threads with an inclination of 0°.

[0033] 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, and the two bevels can be coupled to each other in a concave-convex manner, so that the joint group is not easy to shift relative to 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.

[0034] As a preferred solution, 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, one end of which abuts against the boss 601 on the locking rod 6, and the other end abuts 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;

[0035] As a preferred solution, in the folding joint locking mechanism, there is a boss 703 in the transmission rod 7, one end of the spring 8 abuts against it, and the other end abuts against one end of the inner hole 202 of the rear frame, and the spring 8 prevents the transmission rod 7 from being separated from the universal joint 9;

[0036] 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 on the side of the handle 10 when not operated manually, thereby preventing the entire locking mechanism from loosening.

[0037] Embodiment 2:

[0038] like Figure 6-11A 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, the rear joint 22 is a part of the rear section of the frame or a component fixed thereto, 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 relative to 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 a 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 a locking rod seat 25 is fixed therein; a transmission rod 27 is provided in a hole 2202 inside the rear frame; the locking rod seat 25, the locking rod 26, The transmission rod 27, spring 28, O-ring 29, handle 30 and screw 31 are sequentially arranged in series, wherein the hexagonal hole 2602 in the lock rod 26 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 lock sleeve 24, and one or more bosses 2601 are provided on the outer side of the lock rod 26, and the bosses 2401 in the lock sleeve 24 and the bosses 2601 in the lock 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 Fig.11 , which is coupled with the hexagonal hole 2602 in the lock rod 26, and has the function of transmitting torque at a variable angle, so that the handle 30 can be set in a convenient position for operation. If the space is suitable, the transmission rod 27 and the lock rod 26 can be made into one piece, please refer to Fig.12 46 shown in. In other embodiments, the hexagonal head in the transmission rod 27 can also be set to a polygonal head of other shapes that are convenient to drive, and the hexagonal hole in the locking rod 26 is correspondingly set to a polygonal hole that cooperates with the polygonal head.

[0039] As a preferred solution, in the folding joint locking mechanism, the boss 2401 in the lock sleeve 24 and the boss 2601 in the lock rod 26 are threaded, so that after the handle 30 drives the transmission rod 27 to rotate several circles, the boss 2401 in the lock sleeve 24 and the boss 2601 in the lock rod 26 can engage with or separate from each other;

[0040] As a preferred solution, in the folding joint locking mechanism, one end of the lock rod seat 25 includes a bevel 2501 (if the lock rod seat is made into one piece 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 made into one piece with the front joint, this bevel can be included on the front joint), and the two bevels can be coupled with each other in a concave-convex manner, so that the joint group is not easy to move against each other in the locked state;

[0041] As a preferred solution, in the folding joint locking mechanism, the transmission rod 27 has a boss 2704, which abuts against one end of the locking rod 26, so that the two have a relative fixed position; the transmission rod 27 has another boss 2703, one end of the spring 28 abuts against it, and the other end abuts against one end of the inner hole 2202 of the rear frame, and the spring 28 prevents the transmission rod 27 and the locking rod 26 from being separated;

[0042] 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, and is 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.

[0043] It should be particularly noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope 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 position names (front, middle, rear, top and bottom, etc.) and component name descriptions 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; and the structure of the present invention can also be used in any part of bicycles, scooters and motorcycles to realize the folding function of the frame and other parts, which should also be within the protection scope 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 arranged 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, characterized in that: The locking sleeve is provided with an internal threaded hole, in which two half threads are provided, and one end of the locking rod is provided with two separated half threads, and the thread of the end of the locking rod corresponds to the internal threaded hole of the locking sleeve.

3. The folding joint locking mechanism according to claim 1, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: It also includes an adjusting nut. The locking rod is provided with an adjusting thread. The locking rod passes through a locking rod seat and is threadably connected to the adjusting nut through the adjusting thread.

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

10. The folding joint locking mechanism according to claim 9, characterized in that: A safety buckle is also provided, and the safety buckle can be rotatably covered on the handle.

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