Self-locking belt buckle
By introducing a self-locking torsion spring and an unlocking button into the buckle, the problem of the lack of self-locking function in existing buckles is solved, realizing a highly secure self-locking buckle and simplifying the unlocking process.
Patent Information
- Application Number
- CN202520817793.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-04-25
AI Technical Summary
The existing buckle with spring-loaded reset locking arm lacks a self-locking function and has poor security.
A self-locking buckle was designed, including a buckle body, a locking arm, and a buckle ring. The self-locking function is achieved by setting a through hole and an unlocking button on the hook-shaped arm and using a self-locking torsion spring and a slide surface. The locking arm remains closed under the resistance of the self-locking torsion spring, and the buckle is unlocked after pressing the unlocking button.
It achieves a self-locking function with buckle, improves security, and makes it easy and reliable to switch the lock arm between unlocked and closed states.
Smart Images
Figure CN223627045U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of belt buckle, especially relates to a self -locking belt buckle. BACKGROUND
[0002] The belt buckle with spring reset lock arm does not have self -locking function, and safety is poor. INVENTION CONTENTS
[0003] The utility model wants to solve the technical problem of providing a self -locking belt buckle, and the lock arm of the belt buckle has self -locking function, and safety is high.
[0004] The utility model is such implementation, provide a kind of self -locking belt buckle, including buckle body, lock arm and buckle ring, buckle ring is set in the lower end of buckle body, hook-shaped arm is set in the upper end of buckle body, and the front end of hook-shaped arm is equipped with the rope passing port between buckle body, the tail end of lock arm is rotatably connected with buckle body, the front end of lock arm is stopped at the front end of hook-shaped arm, through hole is set on hook-shaped arm, and unlocking button is movably clamped in through hole, button part and push part are respectively set on unlocking button, button part and push part are respectively located on the left and right sides of unlocking button, slide surface is set on push part, protrusion is set on the inner side of hook-shaped arm, self-locking torsion spring is set on lock arm, the tail end of self-locking torsion spring is set on lock arm, the front end of self-locking torsion spring is abutted on protrusion bottom to prevent lock arm from rotating, and the upper portion of slide surface is pushed into the through hole of hook-shaped arm, the upper portion of button part is under the action of pressurization, so that the upper portion of slide surface protrudes through hole and the front end of self-locking torsion spring is lifted from protrusion bottom, and the front end of self-locking torsion spring is moved along the inner side wall surface of hook-shaped arm from slide surface and protrusion.
[0005] Further, elastic part and engaging part are also respectively provided on the unlocking button, the tail end of elastic part is connected with the push part, the front end of which extends to the upper side of the unlocking button and is pressed in the through hole, and the engaging part is clamped at the left and right ends of the through hole.
[0006] Further, an arc-shaped slope is provided on the upper portion of the protrusion, and the front end of the self-locking torsion spring moves up and down along the arc-shaped slope.
[0007] Further, a circular arc segment is provided on the top end of the protrusion.
[0008] Further, a straight line segment is provided on the front end of the self-locking torsion spring, which abuts on the bottom of the protrusion to prevent the lock arm from rotating.
[0009] Further, a first rotating shaft is also provided on the buckle body, and the tail end of the lock arm is rotatably connected with the buckle body through the first rotating shaft.
[0010] Further, a T-shaped slot and a limiting part are arranged at the end of the locking arm respectively, a T-shaped part is arranged at the front end of the hook-shaped arm, the T-shaped part is located in the T-shaped slot and is blocked by the limiting part.
[0011] Compared with the prior art, the self-locking belt buckle of the utility model comprises a buckle body, a locking arm and a buckle ring, a hook-shaped arm is arranged at the upper end of the buckle body, the end of the locking arm is rotationally connected with the buckle body, the front end of the locking arm is clamped at the front end of the hook-shaped arm, a through hole is arranged on the hook-shaped arm, an unlocking button is movably clamped in the through hole, a button part and a pushing part are arranged on the unlocking button respectively, the button part and the pushing part are located on the left and right sides of the unlocking button respectively, a sliding surface is arranged on the pushing part, a protrusion is arranged on the inner side surface of the hook-shaped arm, a self-locking torsion spring is arranged on the locking arm, the end of the self-locking torsion spring is arranged on the locking arm, the front end of the self-locking torsion spring is abutted on the stop position at the bottom of the protrusion to prevent the locking arm from rotating, and the upper part of the sliding surface is pushed into the through hole of the hook-shaped arm, so that the belt buckle is in the self-locking position. The upper part of the button part is pressed under the action of the pressing force, so that the upper part of the sliding surface protrudes out of the through hole, the front end of the self-locking torsion spring is lifted from the bottom of the protrusion and is separated from the stop position, and the belt buckle is in the unlocking state. The front end of the self-locking torsion spring moves along the inner side wall surface of the hook-shaped arm from the sliding surface and over the protrusion, and the belt buckle is in the open state. The self-locking and unlocking mechanisms are arranged on the buckle body, so that the locking arm has the self-locking function, the unlocking button and the locking arm are pressed at the same time when the belt buckle is unlocked and opened, and the utility model is simple and practical and has high safety. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a self-locking belt buckle in the self-locking closed state of the utility model;
[0013] Figure 2 It is Figure 1 a self-locking belt buckle in the open state;
[0014] Figure 3 It is Figure 1 a self-locking belt buckle in the unlocking state;
[0015] Figure 4 It is Figure 1 a cross-sectional view;
[0016] Figure 5 It is Figure 2 a cross-sectional view;
[0017] Figure 6 It is a self-locking belt buckle of the utility model.
[0018] The figure is marked as: 1, buckle body; 2, lock arm; 21, T-shaped groove; 22, limiting part; 3, buckle ring; 4, hook-shaped arm; 41, through hole; 42, protrusion; 43, arc slope; 44, circular arc segment; 45, T-shaped part; 5, unlocking button; 51, button part; 52, elastic part; 53, clamping part; 54, pushing part; 55, sliding surface; 6, self-locking torsion spring; 61, straight line segment; 7, first rotating shaft; A, rope passing port; B, rope receiving hole. DETAILED DESCRIPTION
[0019] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.
[0020] Please refer to Figures 1 to 5 The preferred embodiment of the self-locking buckle of the utility model comprises a buckle body 1, a lock arm 2 and a buckle ring 3. The buckle ring 3 is arranged at the lower end of the buckle body 1, and a hook-shaped arm 4 is arranged at the upper end of the buckle body 1. The hook-shaped arm 4 is integrally connected with the buckle body 1. A rope passing port A is arranged between the front end of the hook-shaped arm 4 and the buckle body 1, and when the rope passing port A is in an open state, the rope connected with the hook-shaped arm 4 passes through the rope passing port A. The end of the lock arm 2 is rotatably connected with the buckle body 1, and the front end of the lock arm 2 is clamped at the front end of the hook-shaped arm 4. Under the action of an external force, the lock arm 2 rotates to the inside of the hook-shaped arm 4. A through hole 41 is arranged on the hook-shaped arm 4, and an unlocking button 5 is movably clamped in the through hole 41.
[0021] Please refer to Figure 4 and Figure 6 The button part 51, the elastic part 52, the clamping part 53 and the pushing part 54 are arranged on the unlocking button 5 respectively. The button part 51 and the pushing part 54 are respectively located at the left and right sides of the unlocking button 5, the button part 51 is located at the outside of the hook-shaped arm 4, and the pushing part 54 is located at the inside of the hook-shaped arm 4. The elastic part 52 is arranged at the upper part of the unlocking button 5, and the clamping part 53 is arranged at the bottom of the unlocking button 5. The end of the elastic part 52 is connected with the pushing part 54, the front end thereof extends to the upper part of the unlocking button 5 and abuts against the inner wall of the through hole 41 and is squeezed in the through hole 41. The clamping part 53 is clamped at the left and right ends of the through hole 41, and a sliding surface 55 is arranged on the pushing part 54.
[0022] Please refer to Figures 1 to 5A protrusion 42 is arranged on the inner side of the hook-shaped arm 4. A self-locking torsion spring 6 is arranged on the lock arm 2, the end of the self-locking torsion spring 6 is arranged on the lock arm 2, the front end of the self-locking torsion spring 2 abuts against the stop position at the bottom of the protrusion 42 to prevent the lock arm 2 from rotating, and pushes the upper part of the slide surface 55 into the through hole 41 of the hook-shaped arm 4, so that the buckle is in the self-locking position. The upper part of the button part 51 is rotated along the clamping part 53 under the action of the pressing force, so that the upper part of the slide surface 55 protrudes out of the through hole 41 and lifts the front end of the self-locking torsion spring 6 from the bottom of the protrusion 42 to make it disengage from the stop position, and the buckle is in the unlocked state. The lock arm 2 is rotated to the inner side of the hook-shaped arm 4 under the action of external force, and the front end of the self-locking torsion spring 6 is moved along the inner wall surface of the hook-shaped arm 4 from the slide surface 55 over the protrusion 42, the rope passing opening A is opened, and the buckle is in the open state.
[0023] An arc-shaped slope 43 is arranged on the upper part of the protrusion 42, and the front end of the self-locking torsion spring 6 moves up and down along the arc-shaped slope 43. A circular arc segment 44 is arranged at the top end of the protrusion 42. The arrangement of the arc-shaped slope 43 and the circular arc segment 44 is respectively beneficial to the resetting of the lock arm 2. During the resetting of the lock arm 2, the straight line segment 61 of the self-locking torsion spring 6 slides from top to bottom along the arc-shaped slope 43 of the hook-shaped arm 4. The arc-shaped slope 43 and the circular arc segment 44 can both reduce the obstruction of the protrusion 42 to the self-locking torsion spring 6, and facilitate the resetting of the straight line segment 61 of the self-locking torsion spring 6 to the bottom of the protrusion 42.
[0024] A straight line segment 61 is arranged at the front end of the self-locking torsion spring 6, which abuts against the bottom of the protrusion 42 to prevent the lock arm 2 from rotating.
[0025] A first rotating shaft 7 is further arranged on the buckle body 1, and the end of the lock arm 2 is rotatably connected to the buckle body 1 through the first rotating shaft 7. The arrangement of the first rotating shaft 7 improves the flexibility of the rotation of the lock arm 2.
[0026] A T-shaped slot 21 and a limiting part 22 are respectively arranged at the end of the lock arm 2, and a T-shaped part 45 is arranged at the front end of the hook-shaped arm 4, which is located in the T-shaped slot 21 and is blocked by the limiting part 22. The arrangement of the T-shaped slot 21 and the T-shaped part 45 improves the stability and accuracy of the buckling of the lock arm 2 and the hook-shaped arm 4.
[0027] Under normal conditions, neither the lock arm 2 nor the unlocking button 5 is subjected to external force, and under the action of the self-locking torsion spring 6, the front end of the lock arm 2 is stopped at the front end of the hook-shaped arm 4, the straight line segment 61 of the self-locking torsion spring 6 abuts against the bottom position of the protrusion 42, and the straight line segment 61 cannot move upward any more. The rope passing opening A is in the closed state, the lock arm 2 cannot be pressed to rotate to the inner side of the hook-shaped arm 4, and the straight line segment 61 pushes the upper part of the slide surface 55 into the through hole 41 of the hook-shaped arm 4, so that the buckle is in the self-locking state.
[0028] When the unlocking button 5 is pressed, the upper part of the button part 51 rotates along the engaging part 53, so that the upper part of the slide surface 55 protrudes through the through hole 41 and lifts the front end of the self-locking torsion spring 6 from the bottom of the protrusion 42 to disengage from the stop position, and the buckle is in the unlocked state. After pressing the lock arm 2, the lock arm 2 rotates inwardly to the hook-shaped arm 4, driving the straight section 61 of the self-locking torsion spring 6 to slide upward along the arc-shaped slope 43 from the slide surface 55 over the protrusion 42, gradually opening the rope passing port A, and the buckle is in the open state.
[0029] When the external force of pressing the lock arm 2 and the unlocking button 4 disappears, under the action of the self-locking torsion spring 6, the lock arm 2 resets and drives the straight section 61 of the self-locking torsion spring 6 to move downward, and the straight section 61 abuts against the stop position at the bottom of the protrusion 42, the rope passing port A is closed, and the buckle returns to the self-locking state.
[0030] The lock arm 2 and the inner wall of the hook-shaped arm 4 form a rope receiving hole B. The rope passing port A is connected with the rope receiving hole B. When the rope passing port A is in the open state, the rope enters and exits the rope receiving hole B through the rope passing port A, and the rope is connected with the hook-shaped arm 4. Another section of the rope is arranged in the buckle ring 3, and the two sections of the rope are connected with each other through the self-locking buckle.
[0031] The above only describes the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A self-locking 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 cord 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, The unlocking button is movably clamped in the through hole of the hook-shaped arm, the button part and the push part are respectively arranged on the unlocking button, the button part and the push part are respectively located on the left and right sides of the unlocking button, the slide surface is arranged on the push part, the protrusion is arranged on the inner side of the hook-shaped arm, the self-locking torsion spring is arranged on the lock arm, the end of the self-locking torsion spring is arranged on the lock arm, the front end of the self-locking torsion spring abuts on the bottom of the protrusion to prevent the lock arm from rotating, and the upper part of the slide surface is pushed into the through hole of the hook-shaped arm, the upper part of the button part is protruded from the through hole under the action of the pressing force, and the front end of the self-locking torsion spring is lifted from the bottom of the protrusion, the front end of the self-locking torsion spring moves along the inner side wall surface of the hook-shaped arm from the slide surface and over the protrusion.
2. The self-locking buckle of claim 1, wherein, The elastic part and the clamping part are respectively arranged on the unlocking button, the elastic part is arranged on the upper part of the unlocking button, the clamping part is arranged on the bottom of the unlocking button, the end of the elastic part is connected with the push part, the front end of the elastic part extends to the upper part of the unlocking button and is pressed in the through hole, and the clamping part is clamped on the left and right ends of the through hole.
3. The self-locking buckle of claim 1, wherein, The arc-shaped slope is arranged on the upper part of the protrusion, and the front end of the self-locking torsion spring moves up and down along the arc-shaped slope.
4. The self-locking buckle of claim 1, wherein, The circular arc segment is arranged on the top end of the protrusion.
5. The self-locking buckle of claim 1, wherein, The linear segment is arranged on the front end of the self-locking torsion spring, and the linear segment abuts on the bottom of the protrusion to prevent the lock arm from rotating.
6. The self-locking buckle of claim 1, wherein, The first rotating shaft is further arranged on the buckle body, and the end of the lock arm is rotatably connected with the buckle body through the first rotating shaft.
7. The self-locking buckle of claim 1, wherein, The T-shaped slot and the limiting part are respectively arranged on the end of the lock arm, and the T-shaped part is arranged on the front end of the hook-shaped arm, the T-shaped part is located in the T-shaped slot and is blocked by the limiting part.