CN220164088U

CN220164088U - Locking mechanism and folding joint comprising same

Info

Publication number: CN220164088U
Application number: CN202321573460.4U
Authority: CN
Inventors: 周婵鸣; 孙继胜; 赫楠; 曹文安; 卢成超
Original assignee: Youon Technology Co Ltd
Current assignee: Youon Technology Co Ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-12-12
Anticipated expiration: 2033-06-20

Abstract

The utility model discloses a locking mechanism and a folding joint comprising the same, and belongs to the field of folding joints. Comprising a locking mechanism arranged to one side of the connecting end faces of the two rigid members and holding the two rigid members in a coaxially connected state; the locking mechanism includes: a first element, a second element and a safety element. The first element comprises a rotating shaft rotatably installed at the first installation part, and a locking cap arranged at one side of the rotating shaft and protruding outwards; the second element comprises a connecting piece rotatably arranged on the second installation part and a locking groove arranged on the connecting piece; the safety element comprises a clamping groove arranged on the first installation part and a retractable buckle which is arranged on the connecting piece, can be embedded in the clamping groove and keeps a locking state. The utility model realizes the coaxial connection of two mutually hinged rigid parts by adopting the matching of the first element and the second element; and the safety element is designed to ensure the stability of the connection of the first element and the second element.

Description

Locking mechanism and folding joint comprising same

Technical Field

The utility model belongs to the field of folding joints, and particularly relates to a locking mechanism and a folding joint comprising the same.

Background

The foldable bicycle has the foldable property, so that the portability of the foldable bicycle is greatly improved, and the problem of portability is solved for people with carrying requirements.

The general folding vehicle is composed of a frame folding joint and a vertical pipe folding joint, and the front wheel and the rear wheel are folded together through frame folding, so that the length of the folding vehicle can be reduced by about 45 percent. However, most of the existing folding joints of the foldable bicycle are complex in structure and are provided with exposed handles, the size of the handles is large, and if collision or vibration occurs in the riding process, the folding joints of the bicycle frame or the vertical tube are easy to move to form potential safety hazards, so that a locking mechanism for the folding joints, which is convenient and labor-saving in disassembly and assembly actions and high in safety, is necessary to design.

Disclosure of Invention

In order to overcome the technical defects, the utility model provides a locking mechanism and a folding joint comprising the same, so as to solve the problems related to the background technology.

The utility model provides a locking mechanism, a folding joint comprising the same, comprising:

the locking mechanism is arranged to be attached to one side of the two rigid element connecting end faces, and the other sides of the two rigid element connecting end faces are hinged to each other, so that the two rigid elements are kept in a coaxially connected state; the locking mechanism includes:

a first member including a rotation shaft rotatably installed at the first installation part, a locking cap provided at one side of the rotation shaft and protruding outward; the first mounting part is arranged on one side of the connecting end face of one rigid piece and protrudes outwards;

the second element comprises a connecting piece, one end of which is rotatably arranged on the second installation part, the other end of which can be embedded in the first installation part, and a locking groove which is arranged on the connecting piece and can be embedded in the locking cap; the second installation part is arranged on one side of the connecting end face of the other rigid piece and protrudes outwards;

the safety element comprises a clamping groove arranged on the first installation part and a retractable buckle which is arranged on the connecting piece, can be embedded in the clamping groove and keeps a locking state.

Preferably or alternatively, a torsion spring is arranged between the locking cap and/or the rotating shaft and one side surface of the connecting end surface of one rigid piece, so that a preset included angle is formed between the locking cap and one side surface of the connecting end surface of one rigid piece.

Preferably or optionally, the first mounting portion and the second mounting portion are respectively provided with a first notch and a second notch for mounting the first element and the second element.

Preferably or alternatively, the connector comprises:

the rotating part is positioned at the fixed end of the connecting piece; the rotating part is rotatably arranged on the second installation part, and the outline of one side of the rotating part, which is close to one rigid piece, is matched with the shapes of the rotating shaft, the first notch and the second notch;

a main body part positioned in the middle of the connecting piece; a convex part is formed by protruding outwards at one side of the main body part, which is close to one rigid piece, and the convex part can be propped against the outer surface of one rigid piece;

and the handle part is positioned at the movable end of the connecting piece.

Preferably or alternatively, the handle portion is bent or curved a predetermined amount to a side remote from one of the rigid members and a hollowed out channel is formed in the middle of the handle portion.

Preferably or alternatively, the connector is of integrally formed construction.

Preferably or alternatively, the locking groove is provided on the projection.

Preferably or optionally, a mounting cavity is further arranged in the protruding part, and an elastic device is arranged in the mounting cavity;

the resilient means is arranged to maintain the retractable catch in a state of engagement on the catch and to allow the retractable catch to disengage from the catch in response to a user action.

Preferably or alternatively, the elastic means comprise:

the pull rod passes through the convex part along the hollowed-out groove and is arranged in the installation cavity; a pull handle is further arranged at one end of the hollowed-out groove of the pull rod, so that a user is allowed to pull the pull rod towards one side of the movable end of the connecting piece; the pull rod is connected with the retractable buckle at one end of the An Zhuangrong cavity, so that synchronous movement of the pull rod and the retractable buckle is ensured;

the elastic piece is sleeved on the pull rod and provides an acting force for keeping the pull rod to enable the retractable buckle to be embedded in the clamping groove.

The utility model also provides a folding joint comprising the locking mechanism.

The utility model relates to a locking mechanism and a folding joint comprising the same, which have the following beneficial effects compared with the prior art:

1. the locking mechanism realizes the coaxial connection of two mutually hinged rigid parts by adopting the matching of the first element and the second element; and design insurance component guarantees the stability of first component and second component connection, avoids two rigidity pieces to appear connecting unstable problem because of bumping or vibrations.

2. The folding part is convenient and labor-saving to disassemble and assemble and high in safety, and the locking mechanism can not fall off even jolting during riding.

Drawings

Fig. 1 is a schematic view of a folding cart according to the present utility model.

Fig. 2 is a schematic side view of the locking mechanism of the present utility model (in the locked state).

Fig. 3 is a schematic structural view of the locking mechanism (in a locked state) in the present utility model.

Fig. 4 is a schematic structural view of the connector according to the present utility model.

Fig. 5 is a schematic view of the structure of the safety element in the present utility model.

The reference numerals are: 100. a rigid member; 110. a first mounting portion; 120. a second mounting portion; 130. a first notch; 140. a second notch; 200. a locking mechanism; 210. a first element; 211. a rotating shaft; 212. a locking cap; 220. a second element; 221. a connecting piece; 2211. a rotating part; 2212. a main body portion; 2213. a protruding portion; 2214. a handle portion; 2215. a hollow groove; 2216. an Zhuangrong chambers; 222. a locking groove; 230. a safety element; 231. a clamping groove; 232. a retractable catch; 233. a pull rod; 234. a pull handle; 235. an elastic member.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

The folding joints in the current market, especially the folding joints on folding vehicles, have no locking mechanism, are unsafe and are easy to fold by mistake to cause safety accidents; however, the folding joints with locking mechanisms mostly have the problems of more accessories and complex structure. Most of the existing folding joints of the foldable bicycle are complex in structure and are provided with exposed handles, the size of the handles is large, and if collision or vibration occurs in the riding process, the folding joints of the bicycle frame or the vertical tube are easy to move to form potential safety hazards, so that a locking mechanism for the folding joints, which is convenient and labor-saving in disassembly and assembly actions and high in safety, is necessary to design.

The present embodiment provides a locking mechanism 200, referring to fig. 1, the locking mechanism 200 is applied to a folding joint of a folding vehicle such as a folding bicycle, a folding buggy, etc., for example, a handle folding joint and a vehicle body down tube folding joint. Specifically, the locking mechanism 200 is arranged to be attached to one side of the connecting end surfaces of the two rigid members 100, and the other sides of the connecting end surfaces of the two rigid members 100 are hinged to each other, so that the two rigid members 100 are maintained in a coaxially connected state. The two rigid members 100 correspond to the two joints of the folding joint, respectively.

Referring to fig. 2 to 5, the locking mechanism 200 includes: a first element 210, a second element 220, and a fuse element 230. Wherein the first member 210 includes a rotation shaft 211 rotatably installed at the first installation part 110, a locking cap 212 provided at one side of the rotation shaft 211 and protruding outward; the first mounting portion 110 is disposed at a side of a connecting end surface of one of the rigid members 100 and protrudes outwards; the second member 220 includes a connecting member 221 having one end rotatably mounted on the second mounting portion 120 and the other end capable of being fitted to one side surface of the connecting end surface of one of the rigid members 100, and a locking groove 222 provided on the connecting member 221 and capable of being fitted to the locking cap 212; the second mounting portion 120 is disposed at the connecting end face side of the other rigid member 100 and protrudes outward; the safety element 230 includes a locking groove 231 provided at the first mounting portion 110, and a retractable buckle 232 provided at the connecting member 221 and capable of being fitted into the locking groove 231 and maintaining a locked state.

During the process of maintaining the two rigid members 100 in coaxial connection, the connecting member 221 is rotated along the rotation axis of the second mounting portion 120, so that the locking cap 212 is engaged with the locking groove 222, and the first member 210 is connected with the second member 220; then further rotation makes the connecting piece 221 embedded on the second mounting portion 120, so that the second element 220 is connected with one of the rigid pieces 100, and finally, the connecting piece is embedded in the clamping groove 231 through the retractable buckle 232, so that the two rigid pieces 100 are coaxially connected and kept in a locking state, and the problem of unstable connection caused by collision or vibration of the two rigid pieces 100 and the movement of a folding joint is avoided.

In a further embodiment, a torsion spring is disposed between the locking cap 212 and/or the rotating shaft 211 and one side of the connecting end face of one of the rigid members 100, so that a predetermined angle is formed between the locking cap 212 and one side of the connecting end face of one of the rigid members 100. The predetermined included angle is mainly used for providing a restoring force for the locking cap 212 and/or the rotating shaft 211 to spring the connecting piece 221, so that the user can assemble and disassemble the foldable joint conveniently.

In a further embodiment, the first mounting portion 110 and the second mounting portion 120 are respectively provided with a first notch 130 and a second notch 140 for mounting the first element 210 and the second element 220. It should be noted that, in the process of the connecting piece 221 being embedded in the second mounting portion 120, the connecting piece 221 may just be embedded in the first notch 130, so as to ensure the stability of the connection between the connecting piece 221 and the rigid piece 100.

In a further embodiment, the connecting member 221 is an integrally formed structure. For convenience of explanation of the operation and structure of the connection member 221, the connection member 221 is divided into a rotation portion 2211, a main body portion 2212, and a grip portion 2214. Wherein the rotating part 2211 is positioned at the fixed end of the connecting piece 221; the rotating part 2211 is rotatably mounted on the second mounting part 120, and the profile of one side of the rotating part 2211 near to one rigid element 100 is adapted to the shapes of the rotating shaft 211, the first notch 130 and the second notch 140, so that on one hand, the free rotation of the first element 210 is ensured, and on the other hand, the stability of the connection between the first element 210 and the second element 220 is ensured. The main body 2212 is located in the middle of the connection member 221; a protrusion 2213 is formed on the side of the main body 2212 near one of the rigid pieces 100 in an outward protruding manner, and the protrusion 2213 can be abutted against the outer surface of one of the rigid pieces 100; the locking groove 222 is disposed on the protruding portion 2213, for ensuring the connection stability of the first element 210 and the second element 220, and a mounting cavity 2216 is further disposed inside the protruding portion 2213, and an elastic device is disposed in the mounting cavity 2216; the elastic means is arranged to keep the retractable catch 232 in a state of being fitted on the card slot 231 and to allow the retractable catch 232 to be disengaged from the card slot 231 in response to a user's action. A handle 2214 is located at the movable end of the connection member 221; the handle 2214 is bent or curved to a predetermined extent toward a side far from one of the rigid members 100, which is convenient for rotating the connecting member 221, and ensures convenient and labor-saving disassembly and assembly.

In addition, a hollow groove 2215 is formed in the middle of the handle portion 2214 for installing the elastic device user operation part. Specifically, the elastic device includes: a pull rod 233, a pull handle 234 and an elastic member 235; the pull rod 233 is disposed in the mounting cavity 2216 along the hollow groove 2215 through the protruding portion 2213; a pull handle 234 is further arranged at one end of the hollow groove of the pull rod 233, so that a user is allowed to pull the pull rod 233 towards the movable end side of the connecting piece 221; the pull rod 233 is connected with the retractable buckle 232 at one end of the mounting cavity 2216, so that synchronous movement of the pull rod 233 and the retractable buckle 232 is ensured; the elastic member 235 is sleeved on the pull rod 233, and provides a force for the pull rod 233 to keep the retractable buckle 232 engaged with the clamping groove 231. During the disassembly operation, the palm of the user abuts against the tail end of the handle 2214, the two fingers hook the pull handle 234, and pull the pull rod 233 backward, so that the pull rod 233 overcomes the elastic force of the elastic member 235, and the retractable buckle 232 is separated from the clamping groove 231, so that the locking state of the connection between the first element 210 and the second element 220 is released.

To facilitate understanding of the technical scheme of the locking mechanism 200, a brief description will be made of its working principle: during the unfolding and fixing process, the two rigid members 100 are rotated to maintain the coaxial state, the user rotates the connecting member 221 along the rotation axis on the second mounting part 120 by rotating the second member 220, and the locking cap 212 is embedded in the locking groove 222, so that the first member 210 is connected with the second member 220; then further rotation causes the connecting piece 221 to be fitted in the second notch 140 of the second mounting portion 120, so that the second element 220 is connected to one of the rigid pieces 100, and the other sides of the two rigid pieces 100 are fixedly connected by hinge, so that the two rigid pieces 100 are kept in a coaxially connected state. Finally, the retractable buckle 232 is embedded in the clamping groove 231 under the action of the elastic force of the elastic piece 235, so that the two rigid pieces 100 are coaxially connected and kept in a locking state, and the problem of unstable connection caused by joint movement due to collision or vibration of the two rigid pieces 100 is avoided.

In the process of disassembly, the palm of the user abuts against the tail end of the handle 2214, the two fingers hook the pull handle 234, and pull the pull rod 233 backward, so that the pull rod 233 overcomes the elastic force of the elastic member 235, and the retractable buckle 232 is separated from the clamping groove 231, so that the locking state of the connection between the first element 210 and the second element 220 is released. The torsion spring provides a restoring force for the locking cap 212 and/or the rotating shaft 211 to spring the connecting piece 221, so as to automatically spring the second element 220, release the connection between the first element 210 and the second element 220, rotate the two rigid elements 100 to a state parallel or having a certain included angle, and fold the two rigid elements 100.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Claims

1. A locking mechanism (200), characterized in that the locking mechanism (200) is arranged to be attached to one side of the connecting end faces of two rigid pieces (100) and the other side of the connecting end faces of the two rigid pieces (100) are hinged to each other such that the two rigid pieces (100) remain in a coaxially connected state; the locking mechanism (200) includes:

a first member (210) including a rotation shaft (211) rotatably installed at the first installation part (110), a locking cap (212) provided at one side of the rotation shaft (211) and protruding outward; the first mounting part (110) is arranged on one side of the connecting end surface of one rigid piece (100) and protrudes outwards;

a second member (220) including a connecting member (221) having one end rotatably mounted on the second mounting portion (120) and the other end fittable to the first mounting portion (110), and a locking groove (222) provided on the connecting member (221) and fittable to the locking cap (212); the second mounting part (120) is arranged on one side of the connecting end surface of the other rigid piece (100) and protrudes outwards;

the safety element (230) comprises a clamping groove (231) arranged on the first mounting part (110), and a retractable buckle (232) arranged on the connecting piece (221) and capable of being embedded in the clamping groove (231) and keeping a locking state.

2. The locking mechanism (200) according to claim 1, wherein a torsion spring is provided between the locking cap (212) and/or the shaft (211), one side of the connecting end face of one of the rigid members (100), such that a predetermined angle is formed between the locking cap (212) and one side of the connecting end face of one of the rigid members (100).

3. The locking mechanism (200) of claim 1, wherein the first mounting portion (110) and the second mounting portion (120) are each provided with a first notch (130) and a second notch (140) for respectively fitting the first element (210) and the second element (220).

4. A locking mechanism (200) as claimed in claim 3, wherein the connector (221) comprises:

a rotating part (2211) positioned at the fixed end of the connecting piece (221); the rotating part (2211) is rotatably arranged on the second installation part (120), and the outline of one side of the rotating part, which is close to one rigid piece (100), is matched with the shapes of the rotating shaft (211), the first notch (130) and the second notch (140);

a main body (2212) positioned in the middle of the connecting member (221); a protruding part (2213) is formed on one side of the main body part (2212) close to one rigid piece (100) in an outward protruding way, and the protruding part (2213) can be abutted against the outer surface of one rigid piece (100);

a handle portion (2214) located at the movable end of the connection member (221).

5. The locking mechanism (200) of claim 4, wherein the handle portion (2214) is bent or curved a predetermined amount away from one of the rigid members (100) and a hollowed out groove (2215) is formed in a middle portion of the handle portion (2214).

6. The locking mechanism (200) of claim 4, wherein the connector (221) is an integrally formed structure.

7. The locking mechanism (200) of claim 4, wherein the locking groove (222) is provided on the projection (2213).

8. The locking mechanism (200) of claim 5, wherein a mounting pocket (2216) is further provided within the projection (2213), the mounting pocket (2216) having an elastic means provided therein;

the elastic means is arranged to keep the retractable catch (232) in a state of engagement on the catch groove (231) and to allow the retractable catch (232) to disengage from the catch groove (231) in response to a user's action.

9. The locking mechanism (200) of claim 8, wherein the resilient means comprises:

the pull rod (233) is arranged in the An Zhuangrong cavity (2216) along the hollowed-out groove (2215) through the convex part (2213); the pull rod (233) is further provided with a pull handle (234) at one end of the hollow groove (2215), and a user is allowed to pull the pull rod (233) towards the movable end side of the connecting piece (221); the pull rod (233) is connected with the retractable buckle (232) at one end of the installation cavity (2216), so that synchronous movement of the pull rod (233) and the retractable buckle (232) is guaranteed;

and the elastic piece (235) is sleeved on the pull rod (233) and provides a force for keeping the pull rod (233) to be embedded in the clamping groove (231) by the retractable buckle (232).

10. A folding joint, characterized by comprising a locking mechanism (200) according to any one of claims 1 to 9.