Anti-locking lock catch

Abstract

An anti-locking lock catch comprises a fastener body, an opening and closing handle and a hook spring, the fastener body comprises an opening and closing hook portion, an end cover portion and a connecting portion which are integrally formed, the end cover portion is connected between the opening and closing hook portion and the connecting portion, the end cover portion comprises a first end piece and a second end piece, and the first end piece and the second end piece are spaced by a hollow space. A clamping hook spring is arranged in the hollow space, and an opening and closing handle is hinged in the hollow space; a stepped boss is arranged on the inner side of a first end piece and / or a second end piece of the end cover part, and a nest position is arranged on the outer side of the first end piece and / or the second end piece. The utility model relates to an improved lock catch structure, a step boss is arranged in an end piece, a space for accommodating slight deformation of a spring is reserved, the lock catch adopts laser spot welding butt joint, and a nest position convenient for laser identification and positioning is designed at the position of a rotating shaft in the center. And full fusion, positioning and solidification are facilitated after one-time spot welding, and the structure is firm.

Description

Technical Field

[0001] The utility model relates to the technical field of jewelry, in particular to a lock structure for connecting and locking jewelry chains. Background Art

[0002] Generally, ornaments or bracelets, bangles, necklaces and other accessories are fastened and opened with a lock to facilitate the process of taking off and wearing. This kind of lock is usually at both ends of the chain, with a matching lock and buckle. The lock is hooked on the buckle and locked to complete the buckle of the chain into a closed loop. There are also accessories worn as pendants that are directly equipped with a lock, which can be hooked on bag straps, bracelets, necklaces, and clothing.

[0003] The existing lock buckle is relatively simple, usually consisting of a complete buckle body and an opening and closing handle connected together. The buckle body itself is complete with only one opening and closing opening, and the opening handle is inserted into the buckle body and closes the entire lock buckle structure from the opening and closing opening. A reset spring is also provided between the buckle body and the opening and closing handle. When the handle is pressed down by external force to open the opening, the reset spring can reset the opening and closing handle when the external force is removed.

[0004] This type of lock has a quality inspection process in the production and processing links. It is necessary to carry out quality inspection and physical testing on the fatigue limit of the spring, the number of times the lock buckle is pressed together, and the rupture limit to meet the quality assurance requirements. The lock structure is small and the remaining space for the spring in the middle is even smaller. In actual use, the spring is prone to slight deformation after repeated compression, and after deformation, it is very easy to get stuck in the outer shell of the lock, causing the entire lock to lose its function and be directly scrapped. Summary of the invention

[0005] In view of the above problems, the utility model proposes an improved lock buckle structure configuration, which reserves an anti-stuck lock buckle with space to accommodate slight deformation of the spring. At the same time, the lock buckle is connected by laser spot welding, and a dimple is designed at the central rotating shaft position to facilitate laser identification and positioning. After one-time spot welding, it is easy to fully fuse, position and solidify, and the structure is firm.

[0006] The utility model relates to an anti-stuck lock, comprising a fastener body, an opening and closing handle and a fork spring, wherein the fastener body comprises an opening and closing hook portion, an end cover portion and a connecting portion which are integrally formed, wherein the end cover portion is connected between the opening and closing hook portion and the connecting portion, and the end cover portion comprises a first end piece and a second end piece separated by a hollow space, wherein a locking fork spring is provided in the hollow space and the opening and closing handle is hingedly connected; a stepped boss is provided on the inner side of the first end piece and / or the second end piece of the end cover portion, and a recess is provided on the outer side of the first end piece and / or the second end piece.

[0007] The first end piece and the second end piece of the end cover are respectively arranged on both sides of the opening and closing hook part and the connecting part, and the distance between them is the thickness of the opening and closing hook part and the connecting part.

[0008] A hinge hole is provided at the center of each of the first end piece and the second end piece, and the stepped boss is arranged at the periphery of the hinge hole and is coaxial with the hinge hole.

[0009] The socket is arranged at the periphery of the hinge hole and is coaxial with the hinge hole.

[0010] The fork spring comprises a positioning hole and fork legs forked to both sides, which are respectively a first fork leg and a second fork leg. The first fork leg and the second fork leg are respectively tightly supported between the opening and closing handle and the opening and closing hook portion.

[0011] The positioning hole portion of the fork spring is hinged at the hinge hole position.

[0012] The hinge hole is fixed by laser welding, and the welding position is opposite to the socket.

[0013] The utility model relates to an improved lock buckle structure configuration, with a stepped boss in the end piece, leaving a space for accommodating slight deformation of the spring to prevent the lock buckle from getting stuck. At the same time, the lock buckle is connected by laser spot welding, and a dimple is designed at the central rotating shaft position to facilitate laser identification and positioning. After one-time spot welding, it is easy to fully fuse, position and solidify, and the structure is firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an anti-stuck lock involved in the utility model;

[0015] Figure 2 This is a disassembly structure diagram of an anti-stuck lock buckle involved in the utility model;

[0016] Figure 3 It is a schematic diagram of a truncated anti-stuck lock involved in the utility model;

[0017] Among them: 10, fastener body; 11, opening and closing hook part; 12, end cover part; 121, first end piece; 122, second end piece; 13, connecting part; 14, stepped boss; 15, socket; 16, hinge hole; 20, opening and closing handle; 30, fork spring; 31, positioning hole part 31; 32, first fork leg; 33, second fork leg. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] Please refer to the attached Figure 1 , which shows an anti-stuck lock, including a fastener body 10, an opening and closing handle 20 and a fork spring 30, wherein the fastener body 10 includes an opening and closing hook portion 11, an end cover portion 12 and a connecting portion 13 that are integrally formed, wherein the end cover portion 12 is connected between the opening and closing hook portion 11 and the connecting portion 13, and the end cover portion 12 includes a first end piece 121 and a second end piece 122 separated by a hollow space, in which a stuck fork spring 30 is provided and the opening and closing handle 20 is hinged; a stepped boss 14 is provided on the inner side of the first end piece 111 and / or the second end piece 122 of the end cover portion, and a recess 15 is provided on the outer side of the first end piece 121 and / or the second end piece 122.

[0021] A stepped boss 14 is provided on the inner side of the first end piece 121 or the second end piece 122 to leave a margin for the extension and retraction of the fork spring so that the fork spring does not need to move closely against the inner wall of the first end piece to avoid jamming.

[0022] Please refer to the attached Figure 2 and attached Figure 3 The first end piece and the second end piece of the end cover are respectively arranged on both sides of the opening and closing hook part and the connecting part, and the distance between them is the thickness of the opening and closing hook part and the connecting part.

[0023] The first end piece 121 and the second end piece 122 are provided with hinge holes 16 in the center, and the stepped boss 14 is arranged at the periphery of the hinge hole 16 and coaxial with the hinge hole 16. The socket 15 is arranged at the periphery of the hinge hole 16 and coaxial with the hinge hole.

[0024] The design of the socket 15 is related to the hinge hole 16 locking the internal fork spring 30 by welding. The socket 15 is on the outside of the first end piece 121 or the second end piece 122, and one of the designs can be adopted. The socket 15 is convex on the outside and concave in the middle, forming a two-layer positioning and current limiting function. During welding, the flux is in a fluid state at high temperature, which can surround the internal fluid and prevent it from overflowing, thereby firmly completing the welding cooling and shaping process.

[0025] The fork spring 30 includes a positioning hole portion 31 and fork legs forked to both sides, namely a first fork leg 32 and a second fork leg 33 . The first fork leg 32 and the second fork leg 33 are respectively tightly supported between the opening and closing handle 20 and the opening and closing hook portion 11 .

[0026] The positioning hole 31 of the fork spring 30 is hinged at the hinge hole position 16 .

[0027] The hinge hole 16 is fixed by laser welding, and the welding is positioned opposite to the socket 15 for welding.

[0028] The utility model relates to an improved lock buckle structure configuration, with a stepped boss in the end piece, leaving a space for accommodating slight deformation of the spring to prevent the lock buckle from getting stuck. At the same time, the lock buckle is connected by laser spot welding, and a dimple is designed at the central rotating shaft position to facilitate laser identification and positioning. After one-time spot welding, it is easy to fully fuse, position and solidify, and the structure is firm.

[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. An anti-stuck lock, comprising a fastener body, an opening and closing handle and a fork spring, characterized in that: The fastener body includes an integrally formed opening and closing hook portion, an end cover portion and a connecting portion, wherein the end cover portion is connected between the opening and closing hook portion and the connecting portion, and the end cover portion includes a first end piece and a second end piece separated by a hollow space, in which a fork spring is provided and an opening and closing handle is hinged; a stepped boss is provided on the inner side of the first end piece and / or the second end piece of the end cover portion, and a recess is provided on the outer side of the first end piece and / or the second end piece.

2. The anti-stuck lock according to claim 1, characterized in that: The first end piece and the second end piece of the end cover are respectively arranged on both sides of the opening and closing hook part and the connecting part, and the distance between them is the thickness of the opening and closing hook part and the connecting part.

3. The anti-stuck lock buckle according to claim 2, characterized in that: A hinge hole is provided at the center of each of the first end piece and the second end piece, and the stepped boss is arranged at the periphery of the hinge hole and is coaxial with the hinge hole.

4. The anti-stuck lock buckle according to claim 3, characterized in that: The socket is arranged at the periphery of the hinge hole and is coaxial with the hinge hole.

5. The anti-stuck lock buckle according to claim 3, characterized in that: The fork spring comprises a positioning hole and fork legs forked to both sides, which are respectively a first fork leg and a second fork leg. The first fork leg and the second fork leg are respectively tightly supported between the opening and closing handle and the opening and closing hook portion.

6. The anti-stuck lock buckle according to claim 5, characterized in that: The positioning hole portion of the fork spring is hinged at the hinge hole position.

7. The anti-stuck lock buckle according to claim 4, characterized in that: The hinge hole is fixed by laser welding, and the welding position is opposite to the socket.

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