A type of buckle

Abstract

This utility model provides a snap fastener, including a male and a female. The male fastener has a prong at its front end, and the female fastener has an opening at its end facing the male fastener. The opening has an interface adapted to the prong. Both the male and female fasteners have a thread pass for a strap to pass through. It also includes a locking mechanism and a safety mechanism located within the opening. The locking mechanism includes a pin connected to the opening, a locking block pivotally connected to the pin, and a return spring abutting against the locking block. The safety mechanism includes a fixed shaft pivotally connected to the opening above the pin, a safety buckle pivotally connected to the fixed shaft, and a return torsion spring sleeved on the fixed shaft. Two sets of both the locking mechanism and the safety mechanism are provided, symmetrically arranged on both sides of the prong. This utility model can prevent accidental opening and has high security.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a snap fastener. Background Technology

[0002] A snap fastener generally consists of a male and a female. The male fastener is a convex component, often in the shape of a "mountain". It includes a fastener body, pins on both sides of the front end of the fastener body, and a guide block between the pins. The female fastener is a concave component, providing space for the pins and guide block to fit together when inserted. Both the male and female fasteners have holes at their ends for the webbing to pass through. When the male and female fasteners are inserted, they achieve the function of fastening or tightening.

[0003] The existing Chinese patent application number is CN202020073479.2, and the patent name is "Metal Buckle". It discloses "a metal buckle, including a male buckle (1) and a female buckle (2), characterized in that: the front end of the male buckle (1) is provided with a protrusion (11), the protrusion (11) includes a mounting surface (12) and an abutment block (13), the mounting surface (12) is located between the two abutment blocks (13), a spring arm (3) is pivotally connected to the mounting surface (12) and a torsion spring (4) is provided between the mounting surface (12) and the spring arm (3), the top end of the spring arm (3) is provided with a protruding buckle part (31), and the outer side of the spring arm (3) is provided with an outwardly protruding pressing part (32). The protruding buckle part (31) and the A guide slide (33) is provided between the pressing parts (32); the female buckle (2) includes a fastening cavity (21), the front end of the fastening cavity (21) is provided with an insertion port (22), the two sides of the insertion port (22) are provided with abutment parts (221), the two sides of the fastening cavity (21) are provided with pressing ports (23), the upper and lower ends of the pressing ports (23) are provided with guide buckle blocks (24), the guide buckle block (24) includes a guide part (241) and a buckle part (242), the protruding buckle part (31) slides into the buckle part (242) along the guide part (241). "It only has one locking mechanism, that is, the spring arm (3) and the guide buckle block (24) are fastened together, which can easily lead to novice users accidentally opening it, affecting the safety of users. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a buckle that can prevent accidental opening and has high security.

[0005] To address the above problems, the following technical solution is provided: A buckle, comprising a male buckle and a female buckle, wherein the male buckle has a prong at its front end, and the female buckle has an opening at its end facing the male buckle, the opening having an interface adapted to the prong; both the male and female buckles have a thread guide for a strap to pass through; and the buckle also includes a locking mechanism and a safety mechanism located within the opening; the locking mechanism includes a pin connected within the opening, a locking block pivotally connected to the pin, and a return spring abutting against the locking block; and a first lock is provided on the prong. The female buckle has a recessed groove inside the socket for the locking block to swing and unlock, which corresponds to the first locking groove. The locking block includes a locking end that cooperates with the first locking groove and an unlocking end located outside the female buckle. The female buckle has a receiving groove inside the socket that communicates with the recessed groove. The return spring is located in the receiving groove and abuts against the locking end for limiting cooperation. After the male buckle and the female buckle are locked, the locking end abuts against the first locking groove. The inner wall of the recessed groove has a limiting part for limiting the unlocking end.

[0006] The safety mechanism includes a fixed shaft pivotally connected to the socket above the pin, a safety buckle pivotally connected to the fixed shaft, and a reset torsion spring sleeved on the fixed shaft. A second locking groove is provided above the first locking groove on the plug, and a blocking block is formed between the first and second locking grooves. The safety buckle includes an abutting end and a limiting end that abuts against the unlocking end to limit the locking block. When the male and female buckles are locked, the abutting end is located in the second locking groove and abuts against the blocking block. One end of the reset torsion spring is fixed to the female buckle, and the other end abuts against the abutting end, realizing the reset of the safety buckle after it swings and unlocks. Two sets of both the buckle mechanism and the safety mechanism are provided, symmetrically arranged on both sides of the plug.

[0007] In the above structure, during use, the male buckle is inserted into the interface of the socket through the pin. The pin drives the safety buckle to swing relative to the fixed axis, and the locking block swings relative to the pin until the pin is fully inserted into the interface, thus connecting the male buckle and the female buckle. The locking end of the locking block abuts against the first locking groove through the elastic force of the return spring, and is limited by the limiting part abutting against the unlocking end to prevent the pin from falling off. The abutting end of the safety buckle is located in the second locking groove and abuts against the blocking block through the torsion force of the torsion spring. The limiting end abuts against the unlocking end to limit it, thereby limiting the pin and preventing it from falling off, and also enabling the locking function of the locking block. When it is necessary to separate the male and female latches, the user pushes the limiting end upwards, separating it from the unlocking end. The safety latch swings relative to the fixed axis until the abutting end disengages from the second locking groove. Then, the user pushes the unlocking end upwards, causing the lock block to swing relative to the pin until the locking end disengages from the first locking groove. The male latch is then pulled out of the pin, thus separating the male and female latches and unlocking the device. By incorporating a safety mechanism, the latch mechanism can be locked, achieving a double safety function. This prevents accidental triggering by novice users and improves the safety of the device.

[0008] The present invention is further configured such that a clearance opening is provided on the safety buckle between the abutting end and the limiting end, and the limiting end has an arc-shaped cross-section.

[0009] In the above structure, the provisioning opening facilitates the engagement and cooperation between the limiting end and the unlocking end, and also makes it easier for the user to operate, thus improving the reliability and convenience of this utility model.

[0010] The present invention is further configured such that the safety buckle has a mounting groove for accommodating the reset torsion spring, the female buckle has a connecting hole, and the end of the reset torsion spring connected to the female buckle is inserted into the connecting hole.

[0011] In the above structure, the installation limit of the reset torsion spring can be facilitated by setting the receiving groove, thereby improving the assembly convenience of this utility model and improving the stability of the reset spring.

[0012] The present invention is further configured such that both the pin and the fixed shaft are riveted to the female buckle.

[0013] By adopting the above structure, the structural strength of this utility model can be improved, thereby improving the reliability of this utility model.

[0014] The present invention is further configured such that a guide block is provided on one end face of the pin, and a guide opening adapted to the guide block is provided on the female buckle.

[0015] In the above structure, the guide block and guide port cooperate to facilitate the insertion of the pin into the interface and improve the connection strength between the pin and the female buckle, thereby improving the reliability of this utility model.

[0016] The present invention is further configured such that the guide opening is U-shaped and the end of the guide block facing the female buckle is rounded.

[0017] The above structure facilitates the insertion of the guide block into the guide port, thereby improving the ease of inserting the male buckle into the female buckle.

[0018] The present invention is further provided with a reinforcing rib located in the second locking groove between the male buckle and the pin.

[0019] By adopting the above structure, the structural strength between the male buckle and the pin can be improved, thereby improving the reliability of this utility model. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the disassembled structure of this utility model.

[0023] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the buckle, locking mechanism, and safety mechanism in this utility model.

[0025] Figure 6 This is a schematic diagram of the female buckle in this utility model.

[0026] Figure 7 This is a schematic diagram of the male buckle in this utility model.

[0027] The labels in the diagram have the following meanings: 1-Male buckle; 2-Female buckle; 11-Pin; 21-Socket; 22-Interface; 01-Wire passage; 3-Locking mechanism; 4-Safety mechanism; 31-Pin; 32-Locking block; 33-Reset spring; 12-First locking groove; 23-Leaning groove; 321-Locking end; 322-Unlocking end; 24-Accommodating groove; 231-Limiting part;

[0028] 41-Fixed shaft; 42-Safety buckle; 43-Reset torsion spring; 13-Second locking groove; 14-Blocking block; 421-Abutting end; 422-Limiting end; 423-Leaving opening; 424-Mounting groove; 25-Connecting hole; 15-Guide block; 26-Guide opening; 16-Reinforcing rib. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, back, etc.) in the embodiments of this utility model 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 indicator will also change accordingly.

[0031] like Figures 1 to 7 The buckle shown includes a male buckle 1 and a female buckle 2. The male buckle 1 has a prong 11 at its front end, and the female buckle 2 has a slot 21 at its end facing the male buckle 1. The slot 21 has an interface 22 adapted to the prong 11. Both the male buckle 1 and the female buckle 2 have a thread pass 01 for the strap to pass through. The buckle is characterized by further including a locking mechanism 3 and a safety mechanism 4 located within the slot 21. The locking mechanism 3 includes a pin 31 connected to the slot 21, a locking block 32 pivotally connected to the pin 31, and a return spring 33 abutting against the locking block 32. The prong 11 has a first locking groove 12. The female buckle 2... The upper part of the socket 21 is provided with a relief groove 23 for the locking block 32 to swing and unlock, which corresponds to the first locking groove 12. The locking block 32 includes a locking end 321 that cooperates with the first locking groove 12 and an unlocking end 322 located outside the female buckle 2. The socket 21 of the female buckle 2 is provided with a receiving groove 24 that communicates with the relief groove 23. The return spring 33 is located in the receiving groove 24 and abuts against the locking end 321 for limiting cooperation. After the male buckle 1 and the female buckle 2 are locked, the locking end 321 abuts against the first locking groove 12. The inner wall of the relief groove 23 is provided with a limiting part 231 for limiting the unlocking end 322.

[0032] The safety mechanism 4 includes a fixed shaft 41 pivotally connected to the socket 21 and located above the pin 31, a safety buckle 42 pivotally connected to the fixed shaft 41, and a reset torsion spring 43 sleeved on the fixed shaft 41. The plug 11 has a second locking groove 13 located above the first locking groove 12. A blocking block 14 is formed between the first locking groove 12 and the second locking groove 13. The safety buckle 42 includes an abutting end 421 and a limiting end 422 that abuts and cooperates with the unlocking end 322 to limit the locking block 32. When the male buckle 1 and the female buckle 2 are locked, the abutting end 421 is located in the second locking groove 13 and abuts and cooperates with the blocking block 14. One end of the reset torsion spring 43 is fixed to the female buckle 2, and the other end abuts and cooperates with the abutting end 421 to realize the reset after the safety buckle 42 swings and unlocks. Both the locking mechanism 3 and the safety mechanism 4 are provided in two sets, symmetrically arranged on both sides of the plug 11.

[0033] In the above structure, during use, the male buckle 1 is inserted into the interface 22 of the socket 21 through the pin 11. The pin 11 drives the safety buckle 42 to swing relative to the fixed shaft 41. The locking block 32 swings relative to the pin 31 until the pin 11 is fully inserted into the interface 22, thus connecting the male buckle 1 and the female buckle 2. The locking end 321 of the locking block 32 abuts against the first locking groove 12 by the elastic force of the return spring 33, and is limited by the limiting part 231 abutting against the unlocking end 322 to prevent the pin 11 from falling off. The abutting end 421 of the safety buckle 42 is located in the second locking groove 13 and abuts against the blocking block 14 by the torsion of the torsion spring. The limiting end 422 abuts against the unlocking end 322 to limit it, thereby limiting and preventing the pin 11 from falling off, and locking the locking block 32. When it is necessary to separate the male buckle 1 from the female buckle 2, the user pushes the limiting end 422 upward, separating the limiting end 422 from the unlocking end 322. The safety buckle 42 swings relative to the fixed shaft 41 until the abutting end 421 disengages from the second locking groove 13. Then, the user pushes the unlocking end 322 upward, causing the locking block 32 to swing relative to the pin 31 until the locking end 321 disengages from the first locking groove 12. Then, by pulling out the pin 11 of the male buckle 1, the male buckle 1 and the female buckle 2 are separated, i.e., unlocking is achieved. By setting the safety mechanism 4, the locking mechanism 3 can be locked, thus realizing the double safety function of this utility model, preventing accidental triggering by novice users, and improving the safety of this utility model.

[0034] In this embodiment, the safety buckle 42 has a clearance opening 423 between the abutment end 421 and the limiting end 422, and the limiting end 422 has an arc-shaped cross section.

[0035] In the above structure, by providing the clearance port 423, it is possible for the limiting end 422 and the unlocking end 322 to abut and cooperate, and it is also convenient for the user to operate, thus improving the reliability and convenience of this utility model.

[0036] In this embodiment, the safety buckle 42 is provided with a mounting groove 424 for accommodating the reset torsion spring 43, and the female buckle 2 is provided with a connecting hole 25. The end of the reset torsion spring 43 connected to the female buckle 2 is inserted into the connecting hole 25.

[0037] In the above structure, the installation limit of the reset torsion spring 43 can be facilitated by setting the receiving groove 24, thereby improving the assembly convenience of this utility model and improving the stability of the reset spring 33.

[0038] In this embodiment, both the pin 31 and the fixed shaft 41 are riveted to the female buckle 2.

[0039] By adopting the above structure, the structural strength of this utility model can be improved, thereby improving the reliability of this utility model.

[0040] In this embodiment, a guide block 15 is provided on one end face of the pin 11, and a guide opening 26 adapted to the guide block 15 is provided on the female buckle 2.

[0041] In the above structure, the guide block 15 cooperates with the guide port 26, which facilitates the insertion of the pin 11 into the interface 22 and improves the connection strength between the pin 11 and the female buckle 2, thereby improving the reliability of this utility model.

[0042] In this embodiment, the guide opening 26 is U-shaped, and the guide block 15 is rounded at one end facing the female buckle 2.

[0043] The above structure facilitates the insertion of the guide block 15 into the guide port 26, thereby improving the ease of inserting the male buckle 1 into the female buckle 2.

[0044] In this embodiment, a reinforcing rib 16 is provided between the male buckle 1 and the pin 11, located in the second locking groove 13.

[0045] By adopting the above structure, the structural strength between the male buckle 1 and the pin 11 can be improved, thereby improving the reliability of this utility model.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A kind of plug, including male buckle and female buckle, the front end of the male buckle is provided with plug pin, the end of the female buckle towards male buckle is provided with socket, the socket is provided with interface in the adaptation with plug pin, the male buckle and female buckle are all provided with the through line port for binding band to pass through, it is characterized by: It also includes a locking mechanism and a safety mechanism located within the socket. The locking mechanism includes a pin connected within the socket, a locking block pivotally connected to the pin, and a return spring abutting against the locking block. The pin has a first locking groove, and the female buckle has a clearance groove within the socket for the locking block to swing and unlock, corresponding to the first locking groove. The locking block includes a locking end that cooperates with the first locking groove and an unlocking end located outside the female buckle. The female buckle has a receiving groove within the socket that communicates with the clearance groove. The return spring is located within the receiving groove and abuts against the locking end for limiting engagement, so that after the male buckle and female buckle are locked, the locking end abuts against the first locking groove. The inner wall of the clearance groove has a limiting part for limiting the unlocking end. The safety mechanism includes a fixed shaft pivotally connected to the socket above the pin, a safety buckle pivotally connected to the fixed shaft, and a reset torsion spring sleeved on the fixed shaft. A second locking groove is provided above the first locking groove on the plug, and a blocking block is formed between the first and second locking grooves. The safety buckle includes an abutting end and a limiting end that abuts against the unlocking end to limit the locking block. When the male and female buckles are locked, the abutting end is located in the second locking groove and abuts against the blocking block. One end of the reset torsion spring is fixed to the female buckle, and the other end abuts against the abutting end, realizing the reset of the safety buckle after it swings and unlocks. Two sets of both the buckle mechanism and the safety mechanism are provided, symmetrically arranged on both sides of the plug.

2. A cleat according to claim 1, wherein: The safety buckle has a clearance opening between the abutting end and the limiting end, and the limiting end has an arc-shaped cross-section.

3. A cleat according to claim 2, wherein: The safety buckle has a mounting groove for accommodating the reset torsion spring, and the female buckle has a connecting hole. The end of the reset torsion spring connected to the female buckle is inserted into the connecting hole.

4. The insert of claim 1 wherein: Both the pin and the fixed shaft are riveted to the female buckle.

5. The insert of claim 1 wherein: A guide block is provided on one end face of the pin, and a guide opening adapted to the guide block is provided on the female buckle.

6. A cleat according to claim 5, wherein: The guide opening is U-shaped, and the end of the guide block facing the female buckle is rounded.

7. The insert of claim 1 wherein: A reinforcing rib is provided between the male buckle and the pin, located in the second locking groove.

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