Fastener with self-locking function
By introducing limit rods, gears and rack structures into the fasteners, the problem of loose rotation of the fasteners after long-term use and vibration is solved, and the stable clamping and fixing of the parts and the safety of use is improved.
Patent Information
- Application Number
- CN202422380196.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Existing fasteners are prone to self-rotating and loosening after long-term use and multiple vibrations, resulting in unstable parts and increased safety risks, especially when the fasteners are used in reverse.
A fastener with self-locking function is designed. By setting a limit rod, gear and rack structure in the body, the gears are used to drive the limit rod to rotate, clamp the fixing parts, and drive the moving block to move up and down through the screw and spring mechanism to enhance the stability of the fastener.
It effectively avoids the problem of fasteners falling off due to loosening, enhances the stability and safety of parts, and at the same time, the overall stability is further improved by fixing multiple nuts and gaskets.
Smart Images
Figure CN223035453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with a self-locking function. Background Art
[0002] Fasteners are a type of mechanical parts used to fasten two or more parts (or components) together to form a whole. When in use, fasteners are usually threadedly connected to parts, and then the fasteners use the threads for self-locking fixation to lock and fix the parts. However, if the parts vibrate multiple times and after long-term use, the fasteners may rotate and loosen, affecting the stability of the part fastening. Especially when the fasteners are used upside down, the rotation and loosening of the fasteners can easily cause them to fall off, affecting the stability of the parts and the safety during the use of the parts. Summary of the Utility Model
[0003] The purpose of the utility model is to solve the problems in the prior art, and a fastener with a self-locking function is proposed.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A fastener with a self-locking function includes a body, and windows are provided on both sides of the body; a gear is rotatably connected to the lower end of the window; a limiting rod is fixedly connected to the gear; the limiting rod is rotatably connected to the window through the gear; a cavity communicating with the window is provided inside the body; a moving block is slidably connected in the cavity; racks are connected to both sides of the moving block close to the limiting rod; and the outer sides of the racks are meshed with the gears; the two racks are symmetrically arranged on both sides of the moving block; the two gears rotate in opposite directions driven by the up and down movement of the moving block.
[0006] Preferably, a screw rod is threadedly connected to the inside of the body; and the lower end of the screw rod is rotatably clamped to the upper end of the moving block; the moving block is driven by the screw rod to move up and down in the cavity.
[0007] Preferably, a spring is sleeved on the outer side of the screw rod; the spring is arranged in the cavity; and the upper end of the spring abuts against the upper end of the cavity; the lower end of the spring abuts against the upper end of the moving block.
[0008] Preferably, the lower end of the moving block is attached to the bottom of the cavity through the spring; the upper end of the screw rod passes through the body and is connected with a knob; and the knob is attached to the top of the body.
[0009] Preferably, both the front and rear sides of the moving block are slidably connected to the inner wall of the cavity; and both the front and rear sides of the cavity are provided with moving grooves communicating with the cavity; and the moving grooves are vertically arranged; both the front and rear sides of the moving block are connected with clamping blocks matching the moving grooves; the moving block is slidably clamped with the cavity through the clamping blocks.
[0010] Preferably, a limiting block is further connected to the upper end of the main body; the limiting block abuts against the bottom of the knob; several nuts and gaskets are threadedly connected to the outside of the main body.
[0011] Compared with the prior art, the present utility model provides a fastener with a self-locking function, and has the following beneficial effects:
[0012] For the fastener with a self-locking function, by arranging a limiting rod in the main body, when in use, after inserting the main body into a reserved connection hole, by rotating the knob to move the moving block outward, driving the two rack knobs to move in the opposite direction, driving the two gears to rotate in the opposite direction, so that the two limiting rods are driven to rotate outward through the gears and are clamped and fixed with the inner side of the part, which can prevent the main body from falling off due to loosening, and then connecting a plurality of nuts and gaskets to the main body for fixing and fastening to increase the overall stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a structural schematic diagram of the present utility model;
[0014] Figure 2 is a sectional view of the present utility model;
[0015] Figure 3 is a sectional view of the present utility model when in use;
[0016] Figure 4 is an internal structural schematic diagram of the present utility model.
[0017] In the figure: 10, main body; 11, limiting block; 12, nut; 13, gasket; 21, window; 22, gear; 23, limiting rod; 24, cavity; 25, moving block; 26, rack; 27, screw; 28, spring; 29, knob; 31, moving groove; 32, clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Next, it will be referred to Figures 1-4, a specific implementation of the fastener with a self-locking function in the present utility model will be introduced, including a body 10, with windows 21 provided on both sides of the body 10; a gear 22 is rotatably connected to the lower end of the window 21; a limiting rod 23 is fixedly connected to the gear 22; the limiting rod 23 is rotatably connected to the window 21 through the gear 22; a cavity 24 communicating with the window 21 is provided inside the body 10; a moving block 25 is slidably connected inside the cavity 24; racks 26 are connected to both sides of the moving block 25 close to the limiting rod 23; and the outer sides of the racks 26 are engaged with the gears 22; the two racks 26 are symmetrically arranged on both sides of the moving block 25; the two gears 22 rotate in opposite directions driven by the up and down movement of the moving block 25. When in use, after inserting the body into the reserved connection hole, by moving the moving block 25 upward, the two racks 26 are driven to move upward, driving the two gears 22 to rotate in opposite directions, so that the two limiting rods 23 rotate outward for clamping and fixing.
[0019] To facilitate the movement of the moving block 25, a screw rod 27 is threadedly connected inside the body 10; and the lower end of the screw rod 27 is rotatably clamped with the upper end of the moving block 25; the moving block 25 is driven by the screw rod 27 to move up and down inside the cavity 24. A spring 28 is sleeved outside the screw rod 27; the spring 28 is arranged inside the cavity 24; and the upper end of the spring 28 abuts against the upper end of the cavity 24; the lower end of the spring 28 abuts against the upper end of the moving block 25. The lower end of the moving block 25 is attached to the bottom of the cavity 24 through the spring 28; the upper end of the screw rod 27 passes through the body 10 and is connected with a knob 29; and the knob 29 is attached to the top of the body 10. By rotating the knob 29, the screw rod 27 and the moving block 25 can be driven to move up and down.
[0020] And to prevent the moving block 25 from shifting when moving, the front and rear sides of the moving block 25 are slidably connected to the inner wall of the cavity 24; and moving grooves 31 communicating with the cavity 24 are provided on both the front and rear sides of the cavity 24; and the moving grooves 31 are vertically arranged; clamping blocks 32 matching the moving grooves 31 are connected to the front and rear sides of the moving block 25; the moving block 25 is slidably clamped with the cavity 24 through the clamping blocks 32.
[0021] A limiting block 11 is further connected to the upper end of the body 10; the limiting block 11 abuts against the bottom of the knob 29; a number of nuts 12 and washers 13 are threadedly connected to the outside of the body 10.
[0022] The above is only a preferred specific implementation of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, should be covered by the protection scope of the present utility model.
Claims
1. A fastener with a self-locking function, comprising a body (10), characterized in that: Windows (21) are provided on both sides of the body (10); a gear (22) is rotatably connected to the lower end of the window (21); a limit rod (23) is fixedly connected to the gear (22); the limit rod (23) is rotatably connected to the window (21) through the gear (22); a cavity (24) is provided on the inner side of the body (10) and is communicated with the window (21); a moving block (25) is slidably connected in the cavity (24); racks (26) are connected to both sides of the moving block (25) close to the limit rod (23); and the outer side of the rack (26) is meshed with the gear (22); two racks (26) are symmetrically arranged on both sides of the moving block (25); and the two gears (22) are driven to rotate in opposite directions by moving up and down through the moving block (25).
2. A fastener with self-locking function according to claim 1, characterized in that: A screw rod (27) is threadedly connected to the inner side of the body (10); the lower end of the screw rod (27) is rotatably engaged with the upper end of the moving block (25); and the moving block (25) is driven by the screw rod (27) to move up and down in the cavity (24).
3. A fastener with self-locking function according to claim 2, characterized in that: A spring (28) is sleeved on the outer side of the screw rod (27); the spring (28) is arranged in the cavity (24); and the upper end of the spring (28) abuts against the upper end of the cavity (24); and the lower end of the spring (28) abuts against the upper end of the moving block (25).
4. A fastener with self-locking function according to claim 3, characterized in that: The lower end of the moving block (25) is arranged in contact with the bottom of the cavity (24) via a spring (28); the upper end of the screw rod (27) passes through the body (10) and is connected to a knob (29); and the knob (29) is arranged in contact with the top of the body (10).
5. A fastener with self-locking function according to claim 1, characterized in that: The front and rear sides of the moving block (25) are slidably connected to the inner wall of the cavity (24); the front and rear sides of the cavity (24) are both provided with moving grooves (31) communicating with the cavity (24); and the moving grooves (31) are vertically arranged; the front and rear sides of the moving block (25) are connected with clamping blocks (32) matching the moving grooves (31); and the moving block (25) is slidably clamped with the cavity (24) via the clamping blocks (32).
6. A fastener with self-locking function according to claim 1, characterized in that: The upper end of the body (10) is also connected to a limit block (11); the limit block (11) abuts against the bottom of the knob (29); and a plurality of nuts (12) and washers (13) are threadedly connected to the outer side of the body (10).