Self-locking safety buckle
By introducing self-locking torsion springs and limit rods into the safety buckle, the self-locking function of the locking arm is realized, solving the problem of insufficient safety of existing safety buckles and realizing a high-safety self-locking safety buckle design.
Patent Information
- Application Number
- CN202520817783.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Existing safety latches with spring-loaded reset locking arms lack self-locking functionality, resulting in insufficient security.
A self-locking safety buckle was designed, comprising a buckle body, a locking arm, and a buckle ring. By setting a hook-shaped arm, an unlocking component, a limiting rod, a return spring, and a self-locking torsion spring on the buckle body, the self-locking function of the locking arm is realized. The self-locking torsion spring is used to prevent the locking arm from rotating. Combined with the cooperation of the limiting rod and the unlocking component, the self-locking and unlocking process of the safety buckle is realized.
The safety buckle has been improved, ensuring high security in both unlocked and closed states. Its structure is simple and practical.
Smart Images
Figure CN223648297U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of safety buckle technology, and specifically relates to a self-locking safety buckle. Background Technology
[0002] The existing safety buckle with spring-loaded reset arm lacks a self-locking function, resulting in poor security. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a self-locking safety buckle, wherein the locking arm of the safety buckle has a self-locking function and high security.
[0004] This utility model is implemented as follows: a self-locking safety buckle is provided, including a buckle body, a locking arm, and a buckle ring. The buckle ring is located at the lower end of the buckle body, and a hook-shaped arm is located at the upper end of the buckle body. A rope passage is provided between the front end of the hook-shaped arm and the buckle body. The end of the locking arm is rotatably connected to the buckle body, and the front end of the locking arm is locked at the front end of the hook-shaped arm. An unlocking component is located on the outside of the hook-shaped arm, and the unlocking component is rotatably connected to the hook-shaped arm through a first rotating shaft. A limiting rod and a return spring are respectively provided in the buckle body. The limiting rod is rotatably located in the buckle body, and a locking tongue and an abutment part are respectively provided at the upper and lower ends of the limiting rod. The front end of the locking tongue protrudes to the outside of the inner side wall of the hook-shaped arm, and the abutment part abuts against the unlocking component. A self-locking torsion spring is provided on the locking arm, and the end of the self-locking torsion spring is located on the locking arm. The front end of the self-locking torsion spring abuts against the bottom of the front end of the locking tongue to prevent the locking arm from rotating.
[0005] Furthermore, a straight section is provided at the front end of the self-locking torsion spring, which abuts against the bottom of the front end of the latch to prevent the locking arm from rotating.
[0006] Furthermore, a second pivot is provided on the buckle body, and the limiting rod is rotatably connected to the buckle body through the second pivot. The locking tongue and the abutting part are located on the upper and lower sides of the second pivot, respectively.
[0007] Furthermore, a rotating part is provided on the limiting rod, and a rotating groove is provided in the buckle body. The rotating part rotates along the inner wall of the rotating groove, and the locking tongue and the abutting part are located on the upper and lower sides of the rotating part, respectively.
[0008] Furthermore, an inclined section is provided at the front end of the latch, and the length of the upper part of the inclined section protruding from the inner wall of the hook-shaped arm is less than the length of the bottom part of the inclined section protruding from the inner wall of the hook-shaped arm.
[0009] Furthermore, a first arc segment is provided at the connection between the inclined segment and its upper part, and a second arc segment is provided at the connection between the inclined segment and its bottom.
[0010] Furthermore, a third pivot is provided on the buckle body, and the end of the locking arm is rotatably connected to the buckle body through the third pivot.
[0011] Furthermore, a T-shaped groove and a limiting part are respectively provided at the end of the locking arm, and a T-shaped part is provided at the front end of the hook arm. The T-shaped part is located in the T-shaped groove and is blocked by the limiting part.
[0012] Compared with existing technologies, the self-locking safety buckle of this utility model includes a buckle body, a locking arm, and a buckle ring. A hook-shaped arm is provided at the upper end of the buckle body, and the end of the locking arm is rotatably connected to the buckle body. The front end of the locking arm is locked at the front end of the hook-shaped arm. An unlocking component is provided on the outside of the hook-shaped arm, and the unlocking component is rotatably connected to the hook-shaped arm via a first rotating shaft. A limiting rod and a return spring are respectively provided in the buckle body. The limiting rod is rotatably set in the buckle body, and a locking tongue and an abutment part are respectively provided at the upper and lower ends of the limiting rod. The front end of the locking tongue protrudes to the outside of the inner side wall of the hook-shaped arm, and the abutment part abuts against the unlocking component. A self-locking torsion spring is provided on the locking arm, with the end of the self-locking torsion spring set on the locking arm and the front end of the self-locking torsion spring abutting against the bottom of the front end of the locking tongue to prevent the locking arm from rotating. This utility model provides a self-locking and unlocking mechanism on the buckle body, so that the locking arm has a self-locking function. When the safety buckle is unlocked, the unlocking component and the locking arm are pressed simultaneously, which is simple, practical, and highly secure. Attached Figure Description
[0013] Figure 1 This is a three-dimensional schematic diagram of the self-locking safety buckle of this utility model in the self-locking closed state;
[0014] Figure 2 for Figure 1 A 3D diagram showing the self-locking safety buckle in the unlocked / open state;
[0015] Figure 3 This is a cross-sectional view of an embodiment of the self-locking safety buckle of the present invention in the self-locking closed state;
[0016] Figure 4 for Figure 3 A cross-sectional view of the self-locking safety buckle embodiment in the unlocked and open state;
[0017] Figure 5 This is a cross-sectional schematic diagram of another embodiment of the self-locking safety buckle of this utility model in the self-locking closed state;
[0018] Figure 6 for Figure 5 A cross-sectional view of the self-locking safety buckle embodiment in the unlocked and open state.
[0019] The markings in the diagram are as follows: 1. Buckle body; 2. Locking arm; 21. T-slot; 22. Limiting part; 3. Buckle ring; 4. Hook-shaped arm; 41. T-shaped part; 5. Unlocking part; 6. First pivot; 7. Limiting rod; 71. Locking tongue; 72. Abutting part; 73. Rotating part; 74. Inclined section; 75. First arc section; 76. Second arc section; 8. Return spring; 9. Self-locking torsion spring; 91. Straight section; 10. Second pivot; 11. Third pivot; A. Rope passage; B. Rope insertion hole. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] Please refer to the following at the same time Figures 1 to 4 As shown, a preferred embodiment of the self-locking safety buckle of this utility model includes a buckle body 1, a locking arm 2, and a buckle ring 3. The buckle ring 3 is disposed at the lower end of the buckle body 1, and a hook-shaped arm 4 is disposed at the upper end of the buckle body 1. The hook-shaped arm 4 is integrally connected to the buckle body 1. A rope passage A is provided between the front end of the hook-shaped arm 4 and the buckle body 1. When the rope passage A is in the open state, the rope connected to the hook-shaped arm 4 passes through the rope passage A. The end of the locking arm 2 is rotatably connected to the buckle body 1, and the front end of the locking arm 2 is locked at the front end of the hook-shaped arm 4. Under the action of external force, the locking arm 2 rotates inward toward the hook-shaped arm 4.
[0022] An unlocking element 5 is provided on the outer side of the hook arm 4, and the unlocking element 5 is rotatably connected to the hook arm 4 via a first rotating shaft 6. A limiting rod 7 and a return spring 8 are respectively provided inside the buckle body 1, and the limiting rod 7 is rotatably disposed inside the buckle body 1. A locking tongue 71 and an abutment 72 are respectively provided at the upper and lower ends of the limiting rod 7. The front end of the locking tongue 71 protrudes to the outside of the inner side wall of the hook arm 4, and the abutment 72 protrudes to the outer side wall of the buckle body 1 and abuts against the unlocking element 5. A self-locking torsion spring 9 is provided on the locking arm 2. The end of the self-locking torsion spring 9 is disposed on the locking arm 2, and the front end of the self-locking torsion spring 9 abuts against the bottom of the front end of the locking tongue 71 to prevent the locking arm 2 from rotating. A straight segment 91 is provided at the front end of the self-locking torsion spring, and the straight segment 91 abuts against the bottom of the front end of the locking tongue 71 to prevent the locking arm 2 from rotating.
[0023] Under normal conditions, neither the locking arm 2 nor the unlocking part 5 is subjected to external force. Under the action of the return spring 8, the abutment part 72 abuts against the unlocking part 5, and the front end of the locking tongue 71 protrudes to the outside of the inner wall of the hook arm 4. Under the action of the self-locking torsion spring 9, the front end of the locking arm 2 is locked at the front end of the hook arm 4, and the straight section 91 of the self-locking torsion spring 9 abuts against the bottom of the front end of the locking tongue 71. The straight section 91 cannot move upwards, the rope opening A is in a closed state, the locking arm 2 cannot be pressed to rotate inwards towards the hook arm 4, and the safety buckle is in a self-locking state.
[0024] After the unlocking part 5 is pressed, the unlocking part 5 touches the abutment part 72 and rotates it into the buckle body 1. The abutment part 72 drives the locking tongue part 71 to rotate. The front end of the locking tongue part 71 retracts into the hook arm 4 and no longer blocks the straight section 91 of the self-locking torsion spring 9. The unlocking part 5 is in the unlocked state. After the locking arm 2 is pressed, the locking arm 2 rotates inward to the hook arm 4. The straight section 91 slides upward along the inner wall of the hook arm 4, and the rope opening A gradually opens. The safety buckle is in the open state.
[0025] When the external force pressing the locking arm 2 and the unlocking part 4 disappears, under the action of the return spring 8, the abutment part 72 drives the unlocking part 5 and the locking tongue part 71 to reset respectively, and the front end of the locking tongue part 71 protrudes to the outside of the inner side wall of the hook arm 4; under the action of the self-locking torsion spring 9, the locking arm 2 resets and drives the straight section 91 to move downward, the straight section 91 of the self-locking torsion spring 9 abuts against the bottom position of the locking tongue part 71, the rope opening A closes, and the safety buckle returns to the self-locking state.
[0026] The inner walls of the locking arm 2 and the hook arm 4 form a rope inlet B. The rope passage A is connected to the rope inlet B. When the rope passage A is open, the rope passes through the rope passage A and enters and exits the rope inlet B, connecting the rope to the hook arm 4. Another section of rope is installed in the buckle 3, and the two sections of rope are connected to each other via a self-locking safety buckle.
[0027] In one embodiment of this utility model, a second rotating shaft 10 is further provided on the buckle body 1. The limiting rod 7 is rotatably connected to the buckle body 1 through the second rotating shaft 10, and the locking tongue 71 and the abutment part 72 are respectively located on the upper and lower sides of the second rotating shaft 10. The provision of the second rotating shaft 10 improves the flexibility of the rotation of the limiting rod 7.
[0028] As another embodiment of this utility model, please also refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a rotating part 73 is also provided on the limiting rod 7, and a rotating groove (not shown in the figure) that cooperates with the rotating part 73 is provided in the buckle body 1. The rotating part 73 rotates along the inner wall of the rotating groove, and the locking tongue part 71 and the abutment part 72 are located on the upper and lower sides of the rotating part 73, respectively. The rotating part 73 and the rotating groove are provided to improve the strength of the limiting rod 7.
[0029] Please refer to the following at the same time: Figures 1 to 4 As shown, an inclined section 74 is provided at the front end of the latch 71. The length of the upper part of the inclined section 74 protruding from the inner wall of the hook-shaped arm is less than the length of the bottom part of the inclined section 74 protruding from the inner wall of the hook-shaped arm. An acute angle is formed between the inclined section 74 and the bottom part of the inclined section 74.
[0030] The inclined segment 74 is provided with a first arc segment 75 at the connection between itself and its upper part, and a second arc segment 76 is provided at the connection between itself and its bottom.
[0031] The inclined segment 74, the first arc segment 75, and the second arc segment 76 are designed to facilitate the reset of the locking arm 2. During the reset process of the locking arm 2, the straight segment 91 of the self-locking torsion spring 9 slides from top to bottom along the inner wall of the hook arm 4. The inclined segment 74, the first arc segment 75, and the second arc segment 76 can reduce the obstruction of the locking tongue 71 to the self-locking torsion spring 9, making it easier for the straight segment 91 of the self-locking torsion spring 9 to reset to the bottom of the locking tongue 71.
[0032] A third pivot 11 is also provided on the buckle body 1, and the end of the locking arm 2 is rotatably connected to the buckle body 1 through the third pivot 11. The third pivot 11 improves the flexibility of the locking arm 2 in rotation.
[0033] A T-shaped groove 21 and a limiting part 22 are respectively provided at the end of the locking arm 2, and a T-shaped part 41 is provided at the front end of the hook arm 4. The T-shaped part 41 is located in the T-shaped groove 21 and is blocked by the limiting part 22. The T-shaped groove 21 and the T-shaped part 41 improve the stability and accuracy of the locking arm 2 and the hook arm 4 engaging.
[0034] 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 and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A self-locking safety buckle, comprising a buckle body, a locking arm, and a buckle ring, wherein the buckle ring is disposed at the lower end of the buckle body, a hook-shaped arm is disposed at the upper end of the buckle body, a rope passage is provided between the front end of the hook-shaped arm and the buckle body, the end of the locking arm is rotatably connected to the buckle body, and the front end of the locking arm is engaged with the front end of the hook-shaped arm, characterized in that, An unlocking component is provided on the outside of the hook arm. The unlocking component is rotatably connected to the hook arm via a first pivot. A limiting rod and a return spring are respectively provided in the buckle body. The limiting rod is rotatably set in the buckle body. A locking tongue and an abutment are respectively provided at the upper and lower ends of the limiting rod. The front end of the locking tongue protrudes to the outside of the inner side wall of the hook arm. The abutment abuts against the unlocking component. A self-locking torsion spring is provided on the lock arm. The end of the self-locking torsion spring is set on the lock arm. The front end of the self-locking torsion spring abuts against the bottom of the front end of the locking tongue to prevent the lock arm from rotating.
2. The self-locking safety buckle as described in claim 1, characterized in that, A straight section is provided at the front end of the self-locking torsion spring, and the straight section abuts against the bottom of the front end of the latch to prevent the locking arm from rotating.
3. The self-locking safety buckle as described in claim 1, characterized in that, A second pivot is also provided on the buckle body, and the limiting rod is rotatably connected to the buckle body through the second pivot. The locking tongue and the abutting part are located on the upper and lower sides of the second pivot, respectively.
4. The self-locking safety buckle as described in claim 1, characterized in that, A rotating part is also provided on the limiting rod, and a rotating groove is provided in the buckle body. The rotating part rotates along the inner wall of the rotating groove, and the locking tongue and the abutting part are located on the upper and lower sides of the rotating part, respectively.
5. The self-locking safety buckle as described in claim 1, characterized in that, An inclined section is provided at the front end of the latch, and the length of the upper part of the inclined section protruding from the inner wall of the hook-shaped arm is less than the length of the bottom part of the inclined section protruding from the inner wall of the hook-shaped arm.
6. The self-locking safety buckle as described in claim 5, characterized in that, A first arc segment is provided at the connection between the inclined segment and its upper part, and a second arc segment is provided at the connection between the inclined segment and its bottom.
7. The self-locking safety buckle as described in claim 1, characterized in that, A third pivot is also provided on the buckle body, and the end of the locking arm is rotatably connected to the buckle body through the third pivot.
8. The self-locking safety buckle as described in claim 1, characterized in that, A T-shaped groove and a limiting part are respectively provided at the end of the locking arm, and a T-shaped part is provided at the front end of the hook arm. The T-shaped part is located in the T-shaped groove and is blocked by the limiting part.