Sliding groove lock catch

Abstract

A sliding groove lock catch comprises a middle shaft sleeve, a clamping groove end piece and a clamp end piece, the clamping groove end piece and the clamp end piece are correspondingly arranged at the two ends of the middle shaft sleeve respectively and inserted into the middle shaft sleeve to be in butt joint with the lock catch, a clamping groove is formed in the end portion of the clamping groove end piece, a limiting protrusion is arranged on the peripheral wall of the clamping groove end piece, and the limiting protrusion is clamped into a limiting sliding groove in the middle shaft sleeve. The limiting sliding groove limits the limiting position where the clamping end piece stretches out of the clamping groove and retreats, and the end, facing the middle shaft sleeve, of the clamping end is provided with a clamping end structure clamped into the clamping groove. According to the sliding groove lock catch, the clamping groove end piece can be switched between the two different states of the clamping groove exposing portion and the clamping groove folding and shielding portion through the rotary progressive sliding groove and the protruding structure, so that the matched clamp end piece is clamped into the clamping groove to achieve opening and closing of a jewelry rope chain, the structure is simple, fatigue failure is effectively prevented, and the service life of the jewelry rope chain is prolonged. Connection is stable and reliable. And the product quality and the use experience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of jewelry, especially to the matching lock catch technology field applied to the connection of jewelry rope chains. BACKGROUND

[0002] With the continuous improvement of living standards, people's pursuit of jewelry products is also increasingly enthusiastic, and the category and aesthetic requirements of jewelry are also increasingly diversified. Necklace, bracelet and earring are the most common jewelry pieces, which are always loved by consumers of all ages and become the main consumer product.

[0003] For hand rope, bracelet and necklace, there are fixed connection structure styles that cannot be disassembled as a whole, and there are styles that are worn by opening and closing through a movable lock catch. The earliest lobster claw connection method, and with the development of precision hardware processing or precious metal processing technology, various different forms of lock catch structures have gradually appeared, such as plug-in buckles, rotating lock buckles, and press-in buckles. Different structures and matching methods of connecting devices are considered in the current technical process requirements. Since the structure used in jewelry is small in size and has high reliability requirements, the structural design is difficult, and since the lock catch used in jewelry is a high-frequency opening and closing accessory, there are many related requirements for its fatigue limit and whether it is easy to wear.

[0004] The common lock catch on the market has a simple structure, such as a buckle structure. Repeatedly buckling and opening will cause the buckle position to loosen, which may unintentionally cause the lock catch to fall off. There is also a magnetic type buckle. In life, unintentional hooking to the adsorption part may cause the adsorption part to be opened by external force, which may cause the lock catch to loosen. A lock catch product with a simple structure but high reliability is needed to solve the above problems. SUMMARY

[0005] The utility model discloses a lock catch structure suitable for jewelry rope chains, which is used to set and connect the two ends of the jewelry rope chain, open and tighten at any time, complete the wearing process, and has simple structure, low manufacturing cost, good reliability and safety, is suitable for repeated opening and closing without easily failing or reaching the fatigue limit in a short time, and improves the use experience.

[0006] A sliding groove lock catch, characterized in that the sliding groove lock catch comprises a middle shaft sleeve, a clamping groove end piece and a clamping end piece, the clamping groove end piece and the clamping end piece correspond to the two ends of the middle shaft sleeve respectively, are inserted into the middle shaft sleeve and are connected to the lock catch, the clamping groove end piece is provided with a clamping groove at the end, the peripheral wall of the clamping groove end piece is provided with a limiting protrusion, the limiting protrusion is clamped into the limiting sliding groove in the middle shaft sleeve, the limiting sliding groove limits the limit position of the clamping end piece extending out of the clamping groove and retreating, and the clamping end piece is provided with a clamping end structure clamped into the clamping groove at the end facing the middle shaft sleeve.

[0007] The card slot end piece is a whole cylinder, and a U-shaped card slot is arranged at one end of the cylinder towards the middle shaft sleeve, and a limiting protrusion is arranged on the peripheral wall of the cylinder.

[0008] A limiting sliding groove matched with the limiting protrusion is arranged in the middle shaft sleeve, and the limiting sliding groove is arranged in a thread winding manner on the inner wall of the middle shaft sleeve.

[0009] The limiting sliding groove has a starting position and an ending position, the starting position is close to the edge of the middle shaft sleeve, and the ending position is to limit the U-shaped card slot of the card slot end piece to be completely exposed outside the middle shaft sleeve.

[0010] A horn-shaped card slot is connected between the starting position of the limiting sliding groove and the edge of the middle shaft sleeve, and the outermost end of the horn-shaped card slot has the largest diameter, and the diameter close to the starting position of the limiting sliding groove has the smallest diameter.

[0011] The hole diameter of the smallest part of the horn-shaped card slot is smaller than the diameter of the limiting protrusion.

[0012] The sliding groove lock of the utility model relates to the technical field of jewelry, and relates to a sliding groove lock which comprises a middle shaft sleeve, a limiting sliding groove and a horn-shaped card slot. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the whole structure schematic view of the sliding groove lock of the utility model;

[0014] Figure 2 is the sectional view of the sliding groove lock of the utility model;

[0015] Figure 3 is the sectional view of the middle shaft sleeve of the sliding groove lock of the utility model;

[0016] Among them:

[0017] 10, middle shaft sleeve; 11, limiting sliding groove; 111, starting position; 112, ending position; 12, horn-shaped card slot; 20, card slot end piece; 21, limiting protrusion; 22, card slot; 30, clasp end piece; 31, clasp end structure.

DETAILED DESCRIPTION

[0018] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features.

[0019] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more. In addition, the term "includes" and any variations thereof are intended to cover non-exclusive inclusion.

[0020] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Please refer to the accompanying drawings Figure 1 Wherein a chute lock is shown, the chute lock includes a middle shaft sleeve 10, a clamping groove end piece 20 and a clamping end piece 30, if the clamping groove end piece 20 and the clamping end piece 30 are assembled to the two ends of the rope chain to be locked / connected, the clamping groove end piece 20 and the clamping end piece 30 are clamped and connected in the middle shaft sleeve, and the opening and buckling of the rope chain are completed.

[0022] The clamping groove end piece 20 and the clamping end piece 30 correspond to the two ends of the middle shaft sleeve 10 respectively, are inserted into the middle shaft sleeve 10 to connect the lock, wherein the clamping groove end piece 20 is provided with a clamping groove 22 at the end, and a limiting protrusion 21 is arranged on the peripheral wall, so that the limiting protrusion 21 is clamped into the limiting sliding groove 11 in the middle shaft sleeve 10, the limiting sliding groove 11 limits the limit position of the clamping end piece 20 extending out of the clamping groove 22 and retreating, and the clamping end piece 30 is provided with a clamping end structure 31 clamped into the clamping groove 21 at one end facing the middle shaft sleeve 10.

[0023] The clamping groove end piece 20 is a whole cylindrical body, is provided with a U-shaped clamping groove 22 at one end facing the middle shaft sleeve 10, and is provided with a limiting protrusion 21 on the peripheral wall of the cylindrical body.

[0024] A limiting slot 11 is arranged in the middle shaft sleeve 10 to match the limiting protrusion 21, and the limiting slot 11 is arranged in a thread winding manner on the inner wall of the middle shaft sleeve 10.

[0025] The limiting slot 11 has a starting position 111 and an ending position 112, the starting position 111 is close to the edge of the middle shaft sleeve 10, and the ending position 112 is the position where the U-shaped slot 22 of the limiting slot end piece is completely exposed outside the middle shaft sleeve. The slot end piece 20 is pushed into the middle shaft sleeve 10 with the end having the slot 22, and the limiting protrusion 21 on the slot end piece 20 is inserted into the limiting slot 11. With the cooperation of the limiting protrusion 21 and the limiting slot 11, the slot end piece 20 rotates and advances in the middle shaft sleeve 10. When the slot end piece 20 advances to the ending position 112 of the limiting slot 11, it cannot move any further, at this time, the U-shaped slot 22 of the slot end piece 20 should be completely exposed outside the other end of the middle shaft sleeve 10.

[0026] A horn slot 12 is connected between the starting position 111 of the limiting slot 11 and the edge of the middle shaft sleeve 10, and the outermost end of the horn slot 12 has the largest diameter, and the diameter close to the starting position of the limiting slot has the smallest diameter.

[0027] The hole diameter of the smallest part of the horn slot 12 is smaller than the diameter of the limiting protrusion 21. The smallest part of the horn slot 12 should be slightly smaller than the diameter of the limiting protrusion 21, and during assembly, the limiting protrusion 21 needs to be slightly deformed and pushed through the smallest part of the hole diameter and inserted into the guiding section of the limiting slot 11. When rotating back, because the diameter of the limiting protrusion 21 is larger than the smallest hole diameter of the horn slot, the possibility of the slot end piece being loosened from the middle shaft sleeve 10 is limited. Stable assembly is achieved.

[0028] Therefore, the operation process of the slot lock is to rotate the slot end piece 20 to move it in the middle shaft sleeve 10 to the direction of the clasp end piece 30, until the U-shaped slot 22 of the slot end piece 20 is exposed, the clasp end structure 31 of the clasp end piece 30 is slid into the U-shaped slot 22, and then the slot end piece 20 is rotated back to retreat in the middle shaft sleeve 10 until the entire slot end piece 20 is hidden in the middle shaft sleeve 10. When it needs to be opened, the reverse operation can be performed.

[0029] The utility model relates to the chute lock, through the rotation type progressive chute and the convex structure, let the card slot end piece can switch in expose the card slot part and gather the two different states of sheltering the card slot part, thereby the cooperation card end piece is carded into the card slot and realizes the opening and closing of the jewelry rope chain, simple structure, effectively prevents fatigue failure, and stable and reliable connection. Improve the quality and use experience of product. At the same time, the lock part is used as a single accessory, and product upgrading and interchanging can be carried out, and the added value is improved.

[0030] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the scope of the utility model technical scheme to obtain equivalent embodiments. Any simple modification, equivalent change and modification of the above embodiment according to the utility model technical scheme are within the scope of the utility model technical scheme.

Claims

1. A chute lock, characterized in that The chute lock comprises a middle shaft sleeve, a clamping groove end piece and a clamping end piece, the clamping groove end piece and the clamping end piece are respectively arranged at two ends of the middle shaft sleeve, are inserted into the middle shaft sleeve and are abutted with the lock, the end of the clamping groove end piece is provided with a clamping groove, a limiting protrusion is arranged on the peripheral wall of the clamping groove end piece, the limiting protrusion is clamped into a limiting sliding groove in the middle shaft sleeve, the limiting sliding groove limits the extreme position of the clamping end piece extending out of the clamping groove and returning, and the end of the clamping end piece towards the middle shaft sleeve is provided with a clamping end structure clamped into the clamping groove.

2. The chock of claim 1, wherein The clamping groove end piece is a whole cylinder, the end of the clamping groove end piece towards the middle shaft sleeve is provided with a U-shaped clamping groove, and a limiting protrusion is arranged on the peripheral wall of the cylinder.

3. The chock of claim 2, wherein, The limiting sliding groove matched with the limiting protrusion is arranged in the middle shaft sleeve, and the limiting sliding groove is threadedly arranged on the inner wall of the middle shaft sleeve.

4. The chock of claim 3, wherein, The limiting sliding groove has a start position and an end position, the start position is close to the edge of the middle shaft sleeve, and the end position is the extreme position of the U-shaped clamping groove of the clamping groove end piece exposed outside the middle shaft sleeve.

5. The chock of claim 4, wherein, A horn clamping groove is connected between the start position of the limiting sliding groove and the edge of the middle shaft sleeve, the outermost end of the horn clamping groove has the largest diameter, and the diameter close to the start position of the limiting sliding groove has the smallest diameter.

6. The chock of claim 5, wherein, The diameter of the horn clamping groove at the smallest position is smaller than the diameter of the limiting protrusion.

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