Folding joint

Abstract

The utility model discloses a folding joint which comprises a first joint, a second joint and a handle, one side of the first joint is hinged with one side of the second joint, one end of the handle is hinged with the other side of the second joint, a self-locking mechanism is arranged on the handle, the self-locking mechanism is matched with the first joint, and the second joint is matched with the second joint. The handle and the first connector are tightly ejected through the ejector rod to lock the first connector and the second connector, a notch is formed in the end, hinged to the second connector, of the handle, the hanging buckle is arranged in the notch of the handle, one end of the hanging buckle is hinged to the other side of the second connector, and a buckle hole is formed in the other end of the hanging buckle. A boss is arranged on the first connector, a hanging table is arranged on the front surface of the boss, and the hanging table is matched with the buckling hole. The folding joint provided by the utility model is good in locking effect and high in safety.

Description

Technical Field

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

[0002] Folding devices are often used on bicycles or scooters. Existing folding devices generally have only one locking mechanism and one layer of insurance. When this mechanism is accidentally opened during riding of a bicycle or scooter, the handlebars cannot be locked upright and the handlebars are in a folded state. People may fall from the moving vehicle, and their riding safety cannot be guaranteed. In addition, the contact surfaces of the existing tightening mechanism of the folding device are a flat surface and an arc surface, and the contact surface is too small to fail easily. When the tightening mechanism is locked, it is not smooth and is easily worn, causing the folding device to loosen.

[0003] Chinese patent document CN217753991U discloses a double-locking double-safety folder, comprising: an upper shell, a lower shell, a rotating shaft, a hook, a safety buckle and a handle, wherein one end of the upper shell and the lower shell are connected by a rotating shaft, a first connecting shaft is arranged on the other end of the lower shell, a second connecting shaft is arranged on the other end of the upper shell, the first connecting shaft and the second connecting shaft are connected by a hook, one end of the handle is connected to the first connecting shaft, the other end of the handle can be connected to the upper shell by a safety buckle, a tightening mechanism is fixedly arranged on the second connecting shaft, the tightening mechanism includes a ball screw, and an arc-shaped contact surface matching the ball screw is arranged inside the handle. When the first locking is accidentally opened, the second locking can realize the safety, and the locking is smooth through the ball surface tightening, which delays wear and ensures safety. Since the first connecting shaft and the second connecting shaft are connected by the hook, the hook is easy to fall off from the second connecting shaft, and the secondary locking effect is poor. Utility Model Content

[0004] The utility model aims to provide a folding joint with good locking effect and high safety.

[0005] The technical solution adopted by the folding joint disclosed in the utility model is:

[0006] A folding joint, comprising a first joint, a second joint and a handle. One side of the first joint and the second joint is hingedly connected. One end of the handle is hingedly connected to the other side of the second joint. A self-locking mechanism is provided on the handle. The self-locking mechanism cooperates with the first joint. The handle and the first joint are locked by a push rod pressing tightly to lock the first joint and the second joint. It further includes a buckle. A notch is provided at one end of the handle hingedly connected to the second joint. The buckle is arranged in the notch of the handle. One end of the buckle is hingedly connected to the other side of the second joint, and the other end is provided with a buckle hole. A boss is provided on the first joint. A hanging platform is provided on the front surface of the boss. The hanging platform cooperates with the buckle hole.

[0007] As a preferred solution, one end of the buckle and the handle are hingedly connected to the other side of the second joint through a hinge shaft. A torsion spring is provided on the hinge shaft for rotating the other end of the buckle towards the direction close to the second joint.

[0008] As a preferred solution, hooks are provided on both sides of the other end of the buckle. Hanging grooves are provided on both side surfaces of the boss.

[0009] As a preferred solution, the hook part of the hook is slightly inclined downwards.

[0010] As a preferred solution, a push rod hole is provided on the upper end surface of the boss. The push rod is arranged in the push rod hole. A transverse shaft is provided on the handle. The first joint and the second joint are locked by the push rod and the transverse shaft.

[0011] As a preferred solution, a transverse shaft mounting ear is provided on the upper end surface of the boss. A transverse shaft is provided in the transverse shaft mounting ear. A push rod is provided in the handle. The first joint and the second joint are locked by the push rod and the transverse shaft.

[0012] As a preferred solution, a top sleeve is sleeved on the transverse shaft. The first joint and the second joint are locked by the push rod abutting against the top sleeve on the transverse shaft.

[0013] As a preferred solution, a clamping portion is provided on the first joint. The self-locking mechanism includes an elastic member and a self-locking hook claw. A hook claw groove is provided on the handle. The self-locking hook claw is hinged in the hook claw groove of the handle. The elastic member is used to make the self-locking hook claw engage with the clamping portion.

[0014] As a preferred solution, a sunk groove is provided at the bottom of the hook claw groove of the handle. A hook portion is provided at one end of the self-locking hook claw, and an elastic member groove is provided at the other end. One end of the elastic member is arranged in the sunk groove at the bottom of the hook claw groove, and the other end is arranged in the elastic member groove. The middle part of the self-locking hook claw is hinged in the hook claw groove of the handle.

[0015] As a preferred solution, a clamping portion is provided on the first connector. The self-locking mechanism includes an upper clamping member and an elastic member. A chute is provided on the handle. The upper clamping member is arranged in the chute and can slide in the chute. One end of the elastic member abuts against the upper clamping member, and the other end abuts against the side wall of the chute. The elastic member is used to make the upper clamping member be clamped and connected with the clamping portion on the first connector.

[0016] The beneficial effects of the folding connector disclosed by the present utility model are as follows: Rotate the handle. The handle and the first connector are tightened by the ejector rod to lock the first connector and the second connector. At the same time, the buckle hole on the hanging buckle is buckled on the hanging platform of the convex platform. The buckle hole of the hanging buckle is buckled by the hanging platform to improve the locking effect. The self-locking mechanism is used to prevent the handle from rotating, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the folding connector in Embodiment 1 of the present utility model;

[0018] Figure 2 is an exploded schematic diagram of the folding connector in Embodiment 1 of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the first connector of the folding connector in Embodiment 1 of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the handle of the folding connector in Embodiment 1 of the present utility model;

[0021] Figure 5 is a structural schematic diagram of the hanging buckle of the folding connector in Embodiment 1 of the present utility model;

[0022] Figure 6 is an exploded schematic diagram of the folding connector in Embodiment 2 of the present utility model;

[0023] Figure 7 is a structural schematic diagram of the first connector of the folding connector in Embodiment 2 of the present utility model;

[0024] Figure 8 is a structural schematic diagram of the handle of the folding connector in Embodiment 2 of the present utility model DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described and illustrated below in conjunction with specific embodiments and the accompanying drawings of the specification:

[0026] Embodiment 1

[0027] Please refer to Figure 1 and Figure 2 , a folding connector includes a first connector 10, a second connector 20, a hanging buckle 70, a self-locking mechanism and a handle 30. One side of the first connector 10 and the second connector 20 is hinged through a hinge shaft 61, and the self-locking mechanism is arranged on the handle 30.

[0028] Please refer to Figure 2 and Figure 3 One side of the first joint 10 is provided with a hinge ear for hinged connection with the second joint 20, and the other side is provided with a boss 11. Above the boss 11, there is a connection hole 12, and a clamping post 14 is arranged in the connection hole 12. The clamping post 14 is provided with a clamping portion. On the front surface of the boss 11, there is a hanging platform 111, on both side surfaces of the boss 11, there are hanging grooves 112, and on the upper end surface of the boss 11, there is a ejector rod hole 113. An ejector rod 90 is arranged in the ejector rod hole 113. As a preferred solution, the ejector rod 90 can adjust its height in the ejector rod hole 113. In this embodiment, the ejector rod 90 is threadedly connected to the ejector rod hole 113, and the height of the ejector rod 90 in the ejector rod hole 113 is adjusted by threading.

[0029] Please refer to Figure 2 and Figure 4 One end of the handle 30 is provided with a hinge hole, and this end is provided with a notch 31 for placing the hanging buckle 70. The other end of the handle 30 is provided with a hook claw groove 32. At the bottom of the hook claw groove 32, there is a counterbore 33, and on the side wall of the hook claw groove 32, there is a pin shaft hole. In the middle of the handle 30, there is a transverse shaft hole 34, and a transverse shaft 51 is arranged in the transverse shaft hole 34. A top sleeve 52 is sleeved on the transverse shaft 51. The top sleeve 52 cooperates with the ejector rod 90. When the ejector rod 90 on the first joint 10 abuts against the top sleeve 52 and passes the dead point, the first joint 10 and the second joint 20 can be locked. When the top sleeve 52 is worn, the height of the ejector rod 90 can be replaced or adjusted. In other embodiments, the top sleeve 52 can be omitted, and the ejector rod 90 directly abuts against the transverse shaft 51 to lock the first joint 10 and the second joint 20. On the side wall of the notch 31 on the handle 30, there are a retaining hole 35 and a retaining portion 36. The retaining hole 35 and the retaining portion 36 are respectively located at the front and rear edges of the side wall. A retaining rod 100 is arranged in the retaining hole 35, and the retaining rod 100 and the retaining portion 36 are used to limit the hanging buckle 70.

[0030] Please refer to Figure 5, the hanging buckle 70 is arranged in the notch 31 of the handle 30. One end of the hanging buckle 70 is provided with a hinge hole 71, and the other end is provided with a buckle hole 72. The buckle hole 72 cooperates with the hanging platform 111 of the boss 11 on the first joint 10. As a preferred solution, the buckle hole 72 is a closed hole, which can be circular, square or other shapes, and the hanging platform 111 is of a corresponding shape. On both sides of the other end of the hanging buckle 70, there are hanging hooks 73. The hook parts of the hanging hooks 73 are slightly inclined downward, and they cooperate with the hanging grooves 112 of the boss 11. The hook parts are slightly inclined downward, which can be better hooked with the hanging grooves 112. The hanging buckle 70 and the handle 30 are hinged to the other side of the second joint 20 through a hinge shaft 62 passing through the hinge hole 71 on the hanging buckle 70 and the hinge hole on the handle 30. A torsion spring 63 is arranged on the hinge shaft 62. The torsion spring is used to rotate the other end of the hanging buckle 70 towards the direction close to the second joint 20. Since the handle 30 is provided with a shift lever 100 and a blocking part 35, when the handle 30 rotates, the shift lever 100 and the blocking part 35 can push the hanging buckle 70 to rotate.

[0031] The self-locking mechanism includes an elastic member 42 and a self-locking hook 41. One end of the self-locking hook 41 is provided with a hook part, and the other end is provided with an elastic member groove. A through hole is arranged in the middle of the self-locking hook 41. The self-locking hook 41 is hinged in the hook groove 32 of the handle 30 through a pin shaft 43 passing through the through hole. One end of the elastic member 42 is arranged in the sunk groove at the bottom of the hook groove 32, and the other end is arranged in the elastic member groove. Under the action of the elastic member 42, the hook part of the self-locking hook 41 has a tendency to rotate. When the handle 30 is close to the first joint 10, the hook part is clamped and connected with the clamping part of the clamping column 14, preventing the handle 30 from rotating back and achieving the self-locking effect.

[0032] When the first joint 10 and the second joint 20 are locked, the end faces of the first joint 10 and the second joint 20 are aligned. Rotate the handle 30, and the top sleeve 50 on the handle 30 slides on the side surface of the end of the ejector rod 90. When the top sleeve 50 abuts against the end face of the ejector rod 90, the first joint 10 and the second joint 20 are locked. At the same time, the blocking part 35 on the handle 30 pushes the hanging buckle 70, so that the buckle hole 72 on the hanging buckle 70 is buckled on the hanging platform 111 of the boss 11, and the hanging hooks 73 on the hanging buckle 70 are hooked on the hanging grooves 112 of the boss 11. By using the buckling of the hanging platform 111 on the buckle hole 72 of the hanging buckle 70 and the hooking between the hanging hooks 73 and the hanging grooves 112, the locking effect is improved. The hook part of the self-locking hook 41 is clamped and connected with the clamping column 14, preventing the handle 30 from rotating, and the safety effect is good. When opening, loosen the self-locking hook, rotate the handle 30, and the top sleeve 50 withdraws from the ejector rod 90. Due to the rotation of the handle 30, the shift lever 100 drives the hanging buckle 70 to rotate, so that the buckle hole 72 on the hanging buckle 70 is disengaged from the hanging platform 111 of the boss 11, and the hanging hooks 73 on the hanging buckle 70 are disengaged from the hanging grooves 112 of the boss 11, and the first joint 10 and the second joint 20 are opened.

[0033] Embodiment 2

[0034] Please refer to Figure 6 , a folding joint, including a first joint 10, a second joint 20, a hanging buckle 70, a self-locking mechanism and a handle 30. One side of the first joint 10 and the second joint 20 is hinged through a hinge shaft 61, and the self-locking mechanism is arranged on the handle 30. The difference between this embodiment and Embodiment 1 lies in the different joints of the first joint 10 and the handle 30.

[0035] Please refer to Figure 7 , one side of the first joint 10 is provided with a hinge ear for hinged connection with the second joint 20, and the other side is provided with a boss 11. The upper end surface of the boss 11 is provided with a horizontal shaft mounting ear 114, a horizontal shaft 51 is arranged in the horizontal shaft mounting ear 114, a connection hole 12 is arranged above the boss 11, a clamping post 14 is arranged in the connection hole 12, and the clamping post 14 is provided with a clamping portion. A hanging platform 111 is arranged on the front surface of the boss 11, and hanging grooves 112 are arranged on both side surfaces of the boss 11.

[0036] Please refer to Figure 8 , in this embodiment, one end of the handle 30 is provided with a hinge hole, and this end is provided with a notch 31 for placing the hanging buckle 70. The other end of the handle 30 is provided with a hook claw groove 32, a sunken groove 33 is arranged at the bottom of the hook claw groove 32, a pin shaft hole is arranged on the side wall of the hook claw groove 32, a push rod hole 37 is arranged in the middle of the handle 30, a push rod 90 is arranged in the push rod hole 37, and the push rod 90 cooperates with the horizontal shaft 51. A stop hole 35 and a stop portion 36 are arranged on the side wall of the notch 31 on the handle 30. The stop hole 35 and the stop portion 36 are respectively located at the front and rear edges of the side wall. A stop rod 100 is arranged in the stop hole 35, and the stop rod 100 and the stop portion 36 are used for limiting the hanging buckle 70.

[0037] In this embodiment, the first joint 10 and the second joint 20 are locked by the abutment of the push rod 90 on the handle 30 and the horizontal shaft 51 on the first joint 10. The structures and effects of the others are the same as those in Embodiment 1.

[0038] In the above embodiment, the self-locking mechanism can be replaced with other structures with self-locking effects, such as the self-locking mechanism disclosed in Chinese Patent Document CN217753991 U, a double-lock and double-insurance folder, which includes an upper clamping member and an elastic member. A chute is arranged on the handle, the upper clamping member is arranged in the chute and can slide in the chute. One end of the elastic member abuts against the upper clamping member, and the other end abuts against the side wall of the chute. The elastic member is used to make the upper clamping member be clamped and connected with the clamping portion on the first joint.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A folding joint, comprising a first joint, a second joint and a handle. One side of the first joint and the second joint is hinged. One end of the handle is hinged to the other side of the second joint. A self-locking mechanism is provided on the handle. The self-locking mechanism cooperates with the first joint. The handle and the first joint are tightened by a push rod to lock the first joint and the second joint. It is characterized in that, It further includes a hanging buckle. A notch is provided at one end of the handle that is hinged to the second joint. The hanging buckle is arranged in the notch of the handle. One end of the hanging buckle is hingedly connected to the other side of the second joint, and the other end is provided with a buckle hole. A boss is provided on the first joint, and a hanging platform is provided on the front surface of the boss. The hanging platform cooperates with the buckle hole.

2. The folding joint according to claim 1, wherein, One end of the hanging buckle and the handle are hingedly connected to the other side of the second joint through a hinge shaft. A torsion spring is provided on the hinge shaft for rotating the other end of the hanging buckle towards the direction close to the second joint.

3. The folding joint according to claim 1, characterized in that, Hooks are provided on both sides of the other end of the hanging buckle, and hanging grooves are provided on both side surfaces of the boss.

4. The folding joint according to claim 3, wherein, The hook part of the hook is slightly inclined downward.

5. The folding joint according to claim 3, wherein, A push rod hole is provided on the upper end surface of the boss. The push rod is arranged in the push rod hole. A cross shaft is provided on the handle. The first joint and the second joint are locked by the push rod and the cross shaft.

6. The folding joint according to claim 3, wherein, A cross shaft mounting ear is provided on the upper end surface of the boss. A cross shaft is provided in the cross shaft mounting ear. A push rod is provided in the handle. The first joint and the second joint are locked by the push rod and the cross shaft.

7. The folding joint according to claim 5 or 6, characterized in that, A top sleeve is sleeved on the cross shaft. The first joint and the second joint are locked by the push rod abutting against the top sleeve on the cross shaft.

8. The folding joint according to any one of claims 1-6, characterized in that, A clamping portion is provided on the first joint. The self-locking mechanism includes an elastic member and a self-locking hook claw. A hook claw groove is provided on the handle. The self-locking hook claw is hinged in the hook claw groove of the handle. The elastic member is used to make the self-locking hook claw engage with the clamping portion.

9. The folding joint according to claim 8, wherein, A sunk groove is provided at the bottom of the hook claw groove of the handle. A hook portion is provided at one end of the self-locking hook claw, and an elastic member groove is provided at the other end. One end of the elastic member is arranged in the sunk groove at the bottom of the hook claw groove, and the other end is arranged in the elastic member groove. The middle part of the self-locking hook claw is hinged in the hook claw groove of the handle.

10. The folding joint according to claim 1, wherein, A retaining hole and a retaining portion are provided on the side wall of the notch on the handle. The retaining hole and the retaining portion are respectively located at the front and rear edges of the side wall. A retaining rod is provided in the retaining hole.

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