A lock and a bracelet

Abstract

The utility model discloses a lock catch and bracelet, the lock catch includes: first connecting component, including first connecting body, swing arm and elastic part, the first connecting body is provided with the accommodation cavity, the accommodation cavity is used for accommodating swing arm with the elastic part, one side of first connecting body is provided with the recessed part of inserting, the recessed part of inserting with the accommodation cavity intercommunication, swing arm one end is provided with the press part, and swing arm other end is provided with the joint part, second connecting component includes second connecting body, one side of second connecting body is provided with the convex part of inserting, the recessed part of inserting can supply the convex part of inserting inserts, and the convex part of inserting is provided with the card slot. User only needs through simple press and plug -in action to be able to realize the quick opening and closing of lock catch, and it is convenient for user operation, simultaneously, can avoid the accidental opening of lock catch because of accidental pulling and other external force, and avoid the lock catch fracture because of metal fatigue, improve the durability and security of lock catch.

Description

Technical Field

[0001] This utility model relates to the field of jewelry technology, specifically to a clasp and bracelet. Background Technology

[0002] Bracelets, necklaces, and other personal jewelry are common everyday wear items, and the performance of their clasps directly determines the ease of wearing, security, and lifespan of the product. Metal chains commonly use traditional "M-clasps" or "S-clasps." One end of these clasps is welded shut, while the other end is movable. Opening and closing the movable end relies entirely on the user manually bending the metal arm. After repeated bending, the metal material is prone to fatigue, developing micro-cracks at the bending point where stress is most concentrated, eventually leading to breakage. Furthermore, during chain wear, if the chain is accidentally pulled, the movable metal arm can easily deform and break open, causing the bracelet to slip off instantly and resulting in the loss of valuable jewelry. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a buckle and bracelet. Users can quickly open and close the buckle by simply pressing and inserting it, which is convenient for users. At the same time, it can prevent the buckle from being accidentally opened due to external forces such as accidental pulling, and prevent the buckle from breaking due to metal fatigue, thereby improving the durability and safety of the buckle.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A latch, comprising: The first connecting assembly includes a first connecting body, a swing arm rotatably connected to the first connecting body, and an elastic member disposed between the swing arm and the first connecting body. The first connecting body is provided with a receiving cavity for accommodating the swing arm and the elastic member and providing swing space for the swing arm. A insertion recess is provided on one side of the first connecting body, and the insertion recess communicates with the receiving cavity. A pressing part is provided on the outer side of one end of the swing arm, and a snap-fit ​​part is provided on the inner side of the other end of the swing arm. The second connecting component includes a second connecting body, one side of which is provided with a plugging protrusion, the plugging recess is for the plugging protrusion to be inserted into, and the plugging protrusion is provided with a slot. During the process of inserting the protrusion into the recess, the protrusion squeezes the snap-fit ​​portion and causes the swing arm to swing, and the elastic element stores energy. When the protruding part is inserted into the recessed part, the swing arm returns to its original position under the restoring force of the elastic element, so that the locking part is engaged in the slot. When the pressing part is pressed, the swing arm swings to separate the locking part from the locking groove, and the insertion protrusion can be pulled out of the insertion recess.

[0005] As a further improvement to the above technical solution, the snap-fit ​​part is a snap hook, and the snap groove passes through the insertion protrusion.

[0006] As a further improvement to the above technical solution, the insertion end of the plug-in protrusion is provided with a guide slope, and the hook part of the hook has an arc surface.

[0007] As a further improvement to the above technical solution, first through holes are provided on both sides of the first connecting body, and a rotating shaft is installed in the first through hole. The rotating shaft is located in the accommodating cavity, and the swing arm is rotatably connected to the rotating shaft.

[0008] As a further improvement to the above technical solution, the inner side of the swing arm is provided with two connecting ears, and the connecting ears have a second through hole for the rotating shaft to pass through.

[0009] As a further improvement to the above technical solution, the elastic element is a torsion spring, which is sleeved on the rotating shaft and located between the two connecting ears. One end of the torsion spring abuts against the first connecting body, and the other end of the torsion spring abuts against the inner side of the swing arm.

[0010] As a further improvement to the above technical solution, a limiting groove is provided on the inner side of the swing arm, and the limiting groove is used to limit one end of the torsion spring.

[0011] As a further improvement to the above technical solution, the first connector is provided with a first mounting groove on the side away from the insertion recess, and the second connector is provided with a second mounting groove on the side away from the insertion protrusion.

[0012] As a further improvement to the above technical solution, the swing arm is provided with a groove, the groove is located on one side of the pressing part, and the two ends of the groove pass through both sides of the swing arm. Both sides of the first connecting body are provided with clearance grooves, and the two ends of the groove correspond to the two clearance grooves respectively.

[0013] As a further improvement to the above technical solution, the bottom wall of the insertion recess is provided with a foolproof protrusion, and the bottom of the insertion protrusion is provided with a foolproof notch to accommodate the passage of the foolproof protrusion.

[0014] A bracelet includes a chain and the aforementioned clasp, wherein the two ends of the chain are respectively connected to the first connector and the second connector.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a buckle and bracelet. By setting a first connecting component and a second connecting component, when the first connecting component and the second connecting component are interlocked, the pressing part is first pressed by an external force. Under the action of the pressing force, the swing arm swings and the locking part is lifted. At the same time, the elastic element stores energy. Then, the insertion protrusion is inserted into the insertion recess. Finally, the pressing force is removed, and under the action of the restoring force of the elastic element, the swing arm returns to its original position, so that the locking part is locked into the slot, forming a rigid mechanical locking structure. When the first connecting component and the second connecting component are unlocked, the pressing part is first pressed by an external force. Under the action of the pressing force, the swing arm swings and the locking part is lifted, so that the locking part is separated from the slot. At the same time, the elastic element stores energy. Then, the insertion protrusion is pulled out from the insertion recess. Finally, the pressing force is removed, and under the action of the restoring force of the elastic element, the swing arm returns to its original position. Therefore, users can quickly open and close the latch with simple pressing and inserting actions, which is convenient for users. At the same time, it can prevent the latch from being accidentally opened due to external forces such as accidental pulling, and prevent the latch from breaking due to metal fatigue, thus improving the durability and safety of the latch. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of a latch provided in an embodiment of the present utility model; Figure 2 yes Figure 1 A sectional view; Figure 3 yes Figure 1 Exploded view.

[0018] Reference numerals: 110-First connector, 111-Accommodating cavity, 112-Insertion recess, 113-First through hole, 114-First mounting groove, 115-Void groove, 116-Anti-foolproof protrusion, 120-Swing arm, 121-Pressing part, 122-Snap-fit ​​part, 1221-Arc surface, 123-Connecting ear, 1231-Second through hole, 124-Limiting groove, 125-Groove, 130-Elastic element, 140-Rotating shaft, 200-Second connector, 210-Insertion protrusion, 211-Guide slope, 212-Anti-foolproof notch, 220-Snap-fit ​​groove, 230-Second mounting groove. Detailed Implementation

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] Reference Figures 1 to 3 The present invention provides a latch, which includes a first connecting component and a second connecting component.

[0021] Structurally, the first connecting assembly includes a first connecting body 110, a swing arm 120 rotatably connected to the first connecting body 110, and an elastic member 130 disposed between the swing arm 120 and the first connecting body 110. The first connecting body 110 is provided with a receiving cavity 111, which is used to accommodate the swing arm 120 and the elastic member 130 and to provide swing space for the swing arm 120. A insertion recess 112 is provided on one side of the first connecting body 110, and the insertion recess 112 communicates with the receiving cavity 111. A pressing part 121 is provided on the outer side of one end of the swing arm 120, and a locking part 122 is provided on the inner side of the other end of the swing arm 120. The second connecting assembly includes a second connecting body 200, a insertion protrusion 210 is provided on one side of the second connecting body 200, the insertion recess 112 allows the insertion protrusion 210 to be inserted, and a slot 220 is provided on the insertion protrusion 210.

[0022] When the first connecting component and the second connecting component are interlocked, the pressing part 121 is pressed by an external force. Under the action of the pressing force, the swing arm 120 swings and the locking part 122 is lifted. At the same time, the elastic element 130 stores energy. Then, the insertion protrusion 210 is inserted into the insertion recess 112. Finally, the pressing force is removed. Under the action of the restoring force of the elastic element 130, the swing arm 120 returns to its original position, so that the locking part 122 is locked into the slot 220, forming a rigid mechanical locking structure.

[0023] When the first connecting component and the second connecting component are unlocked, the pressing part 121 is pressed by external force. Under the action of the pressing force, the swing arm 120 swings and the locking part 122 is lifted up so that the locking part 122 is separated from the slot 220. At the same time, the elastic element 130 stores energy. Then, the insertion protrusion 210 is pulled out from the insertion recess 112. Finally, the pressing force is removed, and the swing arm 120 is reset under the action of the restoring force of the elastic element 130.

[0024] Therefore, users can quickly open and close the latch with simple pressing and inserting actions, which is convenient for users. At the same time, it can prevent the latch from being accidentally opened due to external forces such as accidental pulling, and prevent the latch from breaking due to metal fatigue, thus improving the durability and safety of the latch.

[0025] In some preferred embodiments, the snap-fit ​​portion 122 is a snap hook, and the snap groove 220 penetrates and inserts the protrusion 210.

[0026] Understandably, through the cooperation of the hook and the through-type slot 220, in the locked state, the hook portion penetrates and passes through the slot 220, allowing the hook to be securely engaged within the slot 220. This prevents accidental disengagement due to external pulling, thus improving the safety of the lock. Simultaneously, the through-type slot 220 prevents the accumulation of dust, small solid particles, and other foreign objects inside the slot 220, avoiding blockages that could prevent the lock from engaging properly.

[0027] Furthermore, the insertion end of the insertion protrusion 210 is provided with a guide slope 211, and the hook part of the hook has an arc surface 1221.

[0028] Understandably, during the interlocking process between the first and second connecting components, no external force is needed to press the pressing part 121. The insertion protrusion 210 is directly inserted into the insertion recess 112. The arc surface 1221 of the hook portion contacts the guide slope 211 of the insertion protrusion 210. The guide slope 211 guides the arc surface 1221 of the hook portion. The guide slope 211 of the insertion protrusion 210 slides smoothly along the arc surface 1221 of the hook portion. At the same time, the hook is lifted and drives the swing arm 120 to swing. The elastic element 130 stores energy. Thus, rigid collision and impact between the hook and the insertion protrusion 210 can be avoided, reducing wear on the contact surface between the hook and the insertion protrusion 210. At the same time, the force required to insert the insertion protrusion 210 is reduced, further reducing the difficulty of operation.

[0029] In some preferred embodiments, the first connecting body 110 has first through holes 113 on both sides, and a rotating shaft 140 is installed in the first through holes 113. The rotating shaft 140 is located in the accommodating cavity 111, and the swing arm 120 is rotatably connected to the rotating shaft 140.

[0030] It is understandable that by providing first through holes 113 on both sides of the first connector 110 and installing the rotating shaft 140, the machining and subsequent disassembly and maintenance of the rotating shaft 140 are facilitated. At the same time, the two ends of the rotating shaft 140 are respectively supported on the two side walls of the first connector 110. When the hook and the slot 220 receive an unexpected pulling force, the force acting on the rotating shaft 140 will be evenly transmitted to the first connector 110, thus avoiding deformation of the rotating shaft 140.

[0031] Furthermore, the inner side of the swing arm 120 is provided with two connecting ears 123, and the connecting ears 123 have a second through hole 1231 for the rotating shaft 140 to pass through.

[0032] Understandably, the second through hole 1231 on the connecting ear 123 provides precise positioning, ensuring that the rotation center of the swing arm 120 coincides with the axis of the rotating shaft 140. At the same time, the two connecting ears 123 are symmetrically arranged on both sides of the swing arm 120, which can prevent the swing arm 120 from wobbling or deflecting in the axial direction of the rotating shaft 140, and improve the stability of the swing arm 120 when swinging.

[0033] Furthermore, the elastic element 130 is a torsion spring, which is sleeved on the rotating shaft 140 and located between the two connecting ears 123. One end of the torsion spring abuts against the first connecting body 110, and the other end abuts against the inner side of the swing arm 120. The torsion spring can provide torque for the swing of the swing arm 120, converting elastic potential energy into kinetic energy for the swing arm 120 to return to its original position, ensuring that the locking part 122 can quickly engage with the slot 220, and improving the stability when the locking part 122 engages with the slot 220. Moreover, the torsion spring being sleeved on the rotating shaft 140 and located between the two connecting ears 123 improves the utilization of internal space, making the overall structure compact and facilitating the miniaturization of the chain by adapting the buckle.

[0034] Furthermore, a limiting groove 124 is provided on the inner side of the swing arm 120. The limiting groove 124 is used to limit one end of the torsion spring, which can prevent one end of the torsion spring from shifting and ensure stability when locking.

[0035] In some preferred embodiments, the first connector 110 is provided with a first mounting groove 114 on the side away from the insertion recess 112, and the second connector 200 is provided with a second mounting groove 230 on the side away from the insertion protrusion 210.

[0036] Understandably, the first mounting groove 114 and the second mounting groove 230 are used to install the two ends of the chain, so that the two ends of the chain can be accurately positioned and fixed in the first mounting groove 114 and the second mounting groove 230. Thus, the two ends of the chain are hidden inside the first connector 110 and the second connector 200, respectively, avoiding exposure of the chain and buckle connection point, and improving the product's aesthetics and wearing comfort.

[0037] In some preferred embodiments, the swing arm 120 is provided with a groove 125, which is located on one side of the pressing part 121. The two ends of the groove 125 extend through both sides of the swing arm 120. Both sides of the first connecting body 110 are provided with clearance grooves 115, and the two ends of the groove 125 correspond to the two clearance grooves 115 respectively.

[0038] Understandably, the swing arm 120 can be pressed using the fingertip, fingernail, or pry bar. The fingertip can act on the pressing part 121, while the fingernail or pry bar can act on the groove 125. The groove 125 on the swing arm 120 provides a locking position for tools such as fingernails or special pry bars. When operating, the user can accurately position the point of force within the groove 125, effectively preventing the fingernail or tool from slipping on the smooth surface of the pressing part 121. At the same time, the clearance grooves 115 on both sides of the first connecting body 110 provide sufficient space for the fingernail or tool to press deeply, ensuring that the fingernail or tool will not collide or interfere with the side wall of the first connecting body 110 during the pressing process.

[0039] In some preferred embodiments, the bottom wall of the insertion recess 112 is provided with a foolproof protrusion 116, and the bottom of the insertion protrusion 210 is provided with a foolproof notch 212 for accommodating the passage of the foolproof protrusion 116.

[0040] Understandably, the insertion protrusion 210 can only be smoothly inserted into the insertion recess 112 when the anti-foolproof protrusion 116 is aligned with the anti-foolproof notch 212. If the insertion protrusion 210 is upside down during insertion, the anti-foolproof protrusion 116 will interfere with other parts of the insertion protrusion 210 and prevent insertion. Thus, it can be ensured that after the insertion protrusion 210 is inserted into the insertion recess 112, the outer contours of the first connector 110 and the second connector 200 can be smoothly aligned, avoiding uneven steps at the connection between the first connector 110 and the second connector 200.

[0041] It should be noted that the outer surfaces of the first connector 110 and the second connector 200 can be smooth or have an embossed texture, and no specific restrictions are imposed in this embodiment.

[0042] This utility model embodiment also provides a bracelet, including a chain (not shown in the figure) and the above-mentioned clasp, with the two ends of the chain respectively connected to the first connector 110 and the second connector 200.

[0043] It should be noted that the buckle in this embodiment of the present invention can be used not only for bracelets, but also for necklaces, anklets, pet leashes, and even bags, clothing and other scenarios that require detachable connections, thereby improving the versatility of the buckle.

[0044] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A latch, characterized in that, include: The first connecting assembly includes a first connecting body, a swing arm rotatably connected to the first connecting body, and an elastic member disposed between the swing arm and the first connecting body. The first connecting body is provided with a receiving cavity for accommodating the swing arm and the elastic member and providing swing space for the swing arm. A insertion recess is provided on one side of the first connecting body, and the insertion recess communicates with the receiving cavity. A pressing part is provided on the outer side of one end of the swing arm, and a snap-fit ​​part is provided on the inner side of the other end of the swing arm. The second connecting component includes a second connecting body, one side of which is provided with a plugging protrusion, and the plugging recess is provided with a slot.

2. The latch according to claim 1, characterized in that, The latching part is a latching hook, and the latching groove passes through the insertion protrusion.

3. A latch according to claim 2, characterized in that, The insertion end of the plug-in protrusion is provided with a guide slope, and the hook part of the hook has an arc surface.

4. A latch according to claim 1, characterized in that, The first connecting body has first through holes on both sides, and a rotating shaft is installed in the first through hole. The rotating shaft is located in the accommodating cavity, and the swing arm is rotatably connected to the rotating shaft.

5. A latch according to claim 4, characterized in that, The inner side of the swing arm is provided with two connecting ears, and the connecting ears have a second through hole for the rotating shaft to pass through.

6. A latch according to claim 5, characterized in that, The elastic element is a torsion spring, which is sleeved on the rotating shaft and located between the two connecting lugs. One end of the torsion spring abuts against the first connecting body, and the other end of the torsion spring abuts against the inner side of the swing arm.

7. A latch according to claim 6, characterized in that, The inner side of the swing arm is provided with a limiting groove, which is used to limit one end of the torsion spring.

8. A latch according to claim 1, characterized in that, The first connector has a first mounting groove on the side away from the insertion recess, and the second connector has a second mounting groove on the side away from the insertion protrusion.

9. A latch according to claim 1, characterized in that, The swing arm is provided with a groove, which is located on one side of the pressing part. The two ends of the groove extend through both sides of the swing arm. Both sides of the first connecting body are provided with clearance slots, and the two ends of the groove correspond to the two clearance slots respectively.

10. A latch according to claim 1, characterized in that, The bottom wall of the insertion recess is provided with a foolproof protrusion, and the bottom of the insertion protrusion is provided with a foolproof notch to accommodate the passage of the foolproof protrusion.

11. A bracelet, characterized in that, It includes a chain and a latch as described in any one of claims 1 to 10, wherein the two ends of the chain are respectively connected to the first connector and the second connector.

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