Lock catch structure for bracelet

Abstract

The utility model relates to the technical field of bracelets, and provides a lock catch structure for a bracelet, which comprises a lock head and a lock seat, a lock pin is arranged in the center of the front end of the lock head, an insertion hole matched with the lock pin is arranged in the lock seat, and locking lugs protruding outwards are arranged on the upper portion and the lower portion of the front end of the lock pin. The inserting hole body is formed by combining an external penetrating hole and an internal locking cavity, the upper hole wall and the lower hole wall in the penetrating hole are each provided with a side guide groove allowing the upper locking protruding block and the lower locking protruding block to penetrate, and the left side and the right side, communicated to the inner end face of the locking cavity, of the penetrating hole are each provided with a locking groove matched with the two locking protruding blocks to rotate by 90 degrees along with the lock pin for locking operation. An elastic locking piece used for pushing the lock pin outwards and enabling the two rotated locking protruding blocks to be connected into the locking grooves in the two sides in a clamped mode is installed in the locking cavity. The lock catch structure for the bracelet has the advantages of being firm in locking, convenient to operate, reasonable in structural design, multifunctional and the like.

Description

Technical Field

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

[0002] Bracelets are a common type of jewelry and are widely loved. In the use of bracelets, the clasp structure is a key component that ensures the bracelet is securely worn and easy to open and close.

[0003] However, existing bracelet clasp structures have some shortcomings. Firstly, many clasps are not securely locked enough, making them prone to accidental loosening during daily wear, leading to loss or damage and causing inconvenience and loss for the wearer. Secondly, some clasps are complex and cumbersome to operate, requiring considerable time and effort to open and close, affecting efficiency and user experience. Some clasp structures are also poorly designed; for example, the locking mechanism may jam or become obstructed during rotation, affecting normal use. Furthermore, existing clasp structures may lack anti-slip properties, easily slipping off during operation, further increasing difficulty. These shortcomings limit the performance and user experience of bracelet clasp structures, failing to adequately meet people's growing demands for stability, convenience, and reliability in bracelets.

[0004] Therefore, this solution proposes a clasp structure for bracelets to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a clasp structure for bracelets.

[0006] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: A lock structure for a bracelet includes a lock head and a lock base. A locking pin is provided at the center of the front end of the lock head. An insertion hole adapted to the locking pin is provided inside the lock base. Locking protrusions protruding outward are provided at the top and bottom of the front end of the locking pin. The insertion hole is composed of an external insertion hole and an internal locking cavity. The upper and lower walls of the insertion hole are provided with side guide grooves for the upper and lower locking protrusions to pass through. Locking grooves adapted to the locking operation after the two locking protrusions rotate 90° with the lock pin are provided on the left and right sides of the end face of the insertion hole leading to the locking cavity. An elastic locking member is installed in the locking cavity to push the lock pin outward and engage the two locking protrusions after rotation with the lock pin inside the locking grooves on both sides.

[0007] Preferably, the elastic locking element specifically includes the following structure:

[0008] A spring positioning seat fixed at the center of the inner end face of the locking cavity;

[0009] A clamping spring positioned on a spring positioning seat;

[0010] The clamping slider is connected to the front end of the clamping spring, and the front end face of the clamping slider rests against the front end face of the locking pin.

[0011] Preferably, the difference between the inner diameter of the locking cavity and the inner diameter of the insertion hole is greater than the thickness of the side protrusion of the locking bump.

[0012] Preferably, chain rope docking rings are installed on the non-interlocking end faces of both the lock head and the lock seat.

[0013] Preferably, the outer surfaces of the lock head and lock base are evenly distributed with several anti-slip patterns.

[0014] The beneficial effects of this utility model are reflected in:

[0015] Secure locking: By cooperating with the locking protrusion on the lock pin and the locking cavity inside the lock seat, rotating the lock pin causes the locking protrusion to enter the locking groove. In addition, the elastic locking element pushes the lock pin outward, making the locking protrusion more securely engaged in the locking groove, thus achieving a secure lock on the buckle. This effectively prevents the lock pin from coming off and ensures the bracelet connection is safe and reliable.

[0016] Easy to operate: The side guide groove inside the insertion hole allows the locking protrusion to pass smoothly. After the locking pin is inserted to a certain depth, simply rotate it to complete the locking operation. The process is simple and easy to understand. At the same time, the anti-slip texture on the outer surface of the lock head and lock seat increases the friction between the fingers and the lock surface, making operation more convenient and quick, less prone to slippage, and improving ease of use.

[0017] The structure is reasonably designed: the difference between the inner diameter of the locking cavity and the inner diameter of the insertion hole is greater than the thickness of the side protrusion of the locking protrusion, ensuring that the locking protrusion will not be obstructed during rotation and can smoothly enter the locking groove, thus ensuring the normal use and reliability of the locking structure.

[0018] Multifunctionality: Chain cord connection rings are installed on the non-connecting ends of the lock head and lock seat, which facilitates the connection of the bracelet's chain cord. This allows the clasp structure to play its role in connecting and fixing the bracelet, increasing the overall practicality of the bracelet.

[0019] In summary, this bracelet clasp structure offers several advantages, including secure locking, convenient operation, a rational structural design, and multi-functionality. It not only ensures the bracelet's connection is secure and reliable but also provides a convenient user experience. Furthermore, its rational structural design guarantees the clasp's proper functioning, and its multi-functional design allows for wider application in bracelets, meeting diverse needs for bracelet clasps. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is an exploded separation diagram of this utility model;

[0023] Figure 3 This is a schematic diagram of the half-section structure of the present invention in the unlocked insertion state;

[0024] Figure 4 This is a schematic diagram of the half-section structure of the present invention in the inserted and locked state;

[0025] Figure 5 This is a schematic diagram of the locking bump distribution of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal structure of the insertion hole of this utility model;

[0027] Figure 7 This is a structural schematic diagram of the elastic locking component of this utility model;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Lock head; 2. Locking pin; 3. Insertion hole; 4. Lock base; 5. Resilient locking element; 6. Chain rope coupling ring;

[0030] 21. Lock the bump;

[0031] 31. Insertion hole; 32. Locking cavity; 33. Side guide groove; 34. Locking groove;

[0032] 51. Spring positioning seat; 52. Tightening spring; 53. Tightening slider. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0034] It should be noted that if the utility model embodiment involves directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

[0036] Please refer to the instruction manual appendix. Figures 1-7 This utility model provides a specific embodiment of a clasp structure for a bracelet:

[0037] The locking mechanism consists of a lock head 1 and a lock base 4. A locking pin 2 is located at the center of the front end of the lock head 1, and locking protrusions 21 protruding outwards are provided at both the top and bottom of the front end of the locking pin 2. The lock base 4 has an insertion hole 3 inside, which is composed of an external insertion hole 31 and an internal locking cavity 32.

[0038] The upper and lower walls of the insertion hole 31 are provided with side guide grooves 33, which allow the upper and lower locking protrusions 21 at the front end of the locking pin 2 to pass smoothly. When the locking pin 2 is inserted into the insertion hole 31, the locking protrusions 21 enter along the side guide grooves 33. The left and right sides of the end face of the insertion hole 31 leading to the locking cavity 32 are provided with locking grooves 34. When the locking pin 2 is inserted to a certain depth, by rotating the locking pin 2, the locking protrusions 21 can rotate 90° with the locking pin 2. At this time, the two locking protrusions 21 rotate to the front of the locking grooves 34 on both sides, and then move backward with the locking pin 2 into the locking grooves 34, thus realizing the locking function of the latch.

[0039] An elastic locking element 5 is installed inside the locking cavity 32. Its specific structure includes a spring positioning seat 51 fixed to the center of the inner end face of the locking cavity 32, a tightening spring 52 positioned on the spring positioning seat 51, and a tightening slider 53 connected to the front end of the tightening spring 52. The tightening spring 52 has a certain elastic potential energy. When the locking pin 2 is inserted into the insertion hole 3, the tightening spring 52 pushes the locking pin 2 outward through the tightening slider 53, allowing the two rotating locking protrusions 21 to be more firmly engaged inside the locking grooves 34 on both sides, thereby achieving the effect of locking the rotation of the locking pin 2 and preventing the locking pin 2 from disengaging.

[0040] In addition, the difference between the inner diameter of the locking cavity 32 and the inner diameter of the insertion hole 31 is greater than the thickness of the side protrusion of the locking protrusion 21. This design ensures that the locking protrusion 21 will not be obstructed during rotation and can smoothly enter the locking groove 34.

[0041] Chain cord connecting rings 6 are installed on the non-connecting end faces of the lock head 1 and lock base 4 for connecting the chain cord of the bracelet. At the same time, several anti-slip textures are evenly distributed on the outer surface of the lock head 1 and lock base 4. These anti-slip textures can increase the friction between the fingers and the surface of the lock, making it more convenient and quick to operate the lock and less likely to slip off.

[0042] Working principle:

[0043] Align the locking pin 2 at the center of the front end of the lock head 1 with the insertion hole 3 inside the lock base 4, wherein the insertion hole 3 is composed of an external through hole 31 and an internal locking cavity 32.

[0044] Insert the locking pin 2 into the insertion hole 31. At this time, the locking protrusions 21 at the top and bottom of the front end of the locking pin 2 smoothly pass through the side guide grooves 33 of the upper and lower hole walls inside the insertion hole 31.

[0045] When the locking pin 2 is inserted to a certain depth, by rotating the locking pin 2, the locking protrusion 21 is rotated 90° with the locking pin 2. At this time, the two locking protrusions 21 are rotated to the front of the locking grooves 34 on both sides.

[0046] Then, following the movement of the locking pin 2 backward, the locking protrusion 21 enters the locking groove 34.

[0047] During the insertion of the locking pin 2 into the insertion hole 3, the elastic locking element 5 inside the locking cavity 32 plays its role. Specifically, the tightening spring 52, which is fixed on the spring positioning seat 51 at the center of the inner end face of the locking cavity 32, pushes the locking pin 2 outward through the tightening slider 53, so that the two locking protrusions 21 after rotation can be more firmly engaged in the locking grooves 34 on both sides, realizing the locking function of the latch. Unlocking only requires reversing the above operation.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lock structure for a hand chain, comprising a lock head (1) and a lock seat (4), characterized in that, The lock head (1) is provided with a lock pin (2) at the front end, the lock seat (4) is provided with a plug hole (3) matching the lock pin (2) inside, the lock pin (2) is provided with a locking lug (21) outward at the front end, the plug hole (3) is composed of an external through hole (31) and an internal locking cavity (32), the upper and lower hole walls of the through hole (31) are provided with side guide grooves (33) for the upper and lower locking lugs (21), the left and right sides of the through hole (31) leading to the internal end face of the locking cavity (32) are provided with locking grooves (34) matching the two locking lugs (21) for locking operation after the lock pin (2) is rotated by 90°, and the locking cavity (32) is provided with an elastic locking piece (5) for pushing the lock pin (2) outward and making the two locking lugs (21) after rotation be clamped in the locking grooves (34) on both sides.

2. The clasp structure for a bracelet according to claim 1, wherein The elastic locking piece (5) specifically comprises the following structure: A spring positioning seat (51) fixed to the inside end face of the locking cavity (32); A tightening spring (52) positioned on the spring positioning seat (51); A tightening sliding block (53) butted at the front end of the tightening spring (52), and the front end face of the tightening sliding block (53) is butted on the front end face of the lock pin (2).

3. The clasp structure for a bracelet according to claim 1, wherein The difference between the inner diameter of the locking cavity (32) and the inner diameter of the through hole (31) is greater than the thickness of the locking lug (21) protruding from the side.

4. The clasp structure for a bracelet according to claim 1, wherein The non-butted end faces of the lock head (1) and the lock seat (4) are provided with chain rope butt rings (6).

5. The clasp structure for a bracelet according to claim 1, wherein The outer surfaces of the lock head (1) and the lock seat (4) are uniformly provided with a plurality of anti-skid lines.

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