Buckle type fastener convenient for blind installation and positioning

Abstract

The utility model relates to the technical field of buckle type fasteners, and discloses a buckle type fastener convenient for blind installation and positioning, which comprises a screw, a sliding ring is arranged on the outer wall of the screw, the outer wall of the sliding ring is connected with a nut through a buckle assembly so as to limit the sliding ring after the screw is installed, a threaded groove is arranged on the inner wall of the sliding ring, and the threaded groove is connected with the nut. A groove is formed in the top end of the screw, the direction of the threaded groove is the same as the thread direction of the screw, and connecting blocks are fixedly connected to the front end and the rear end of the sliding ring. According to the anti-loosening screw, after the screw is rotated into the sliding ring, the clamping block is clamped on the upper side of the sliding ring to limit the screw, mechanical locking can be formed through rigid meshing of the clamping block and the sliding ring, screw loosening caused by external force such as vibration and impact is effectively resisted, and compared with a traditional anti-loosening mode, the anti-loosening screw has a more stable limiting effect; and the structure is compact and simple, clamping and fixing can be rapidly completed without additional tools during assembling, the assembling efficiency is improved, and positioning time consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of snap-fit ​​fastener technology, and in particular to a snap-fit ​​fastener that is easy to install and position blindly. Background Technology

[0002] Screws and nuts are standard components that achieve fastening connections through threaded engagement. Screws have external threads on the shank, while nuts have internal threads on the inner wall. During rotation, they are locked by the frictional force of the threaded inclined surfaces. Their advantages include high connection strength and adjustable tightness, making them suitable for applications such as machinery and construction that require high loads. This connection method allows for precise control of preload through torque and can also be used with anti-loosening devices such as washers, spring washers, and lock nuts to cope with vibration environments. Furthermore, the diverse structural designs of thread specifications, such as pitch and tooth profile, and material strength, such as high-strength alloy steel, can flexibly meet the preload requirements under different working conditions. It is a core connection solution in the industrial field that bears high-strength loads while maintaining reliability and maintainability.

[0003] In mechanical assembly, if screws and nuts lack effective restraint after being screwed together, they are easily subjected to complex external forces such as continuous vibration, sudden impact, thermal expansion and contraction of materials caused by temperature changes, or resonance generated by high-frequency operation of equipment during long-term operation. These external forces will continuously weaken the frictional preload between the threads, causing the screws to gradually loosen. This may not only cause functional failures such as abnormal operating noise and deterioration of precision of equipment, but also lead to safety accidents such as pipeline leakage and component detachment due to connection failure in key fields such as petrochemicals and rail transportation, seriously threatening system reliability and personnel safety.

[0004] In response to the lack of technical means to limit screw positioning, this application proposes a snap-fit ​​fastener that facilitates blind installation and positioning. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that lack screw limiting, and to propose a snap-fit ​​fastener that facilitates blind assembly and positioning. After the screw rotates into the sliding ring, a snap-fit ​​block is engaged with the upper side of the sliding ring to limit the screw's movement. The rigid engagement between the snap-fit ​​block and the sliding ring forms a mechanical stop, effectively preventing screw loosening caused by external forces such as vibration and impact. Compared with traditional anti-loosening methods, it has a more stable limiting effect, and its structure is compact and simple. No additional tools are required during assembly to quickly complete the snap-fit ​​fixation, improving assembly efficiency and reducing positioning time.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A snap-fit ​​fastener for easy blind installation and positioning includes a screw, wherein a sliding ring is provided on the outer wall of the screw, and a nut is connected to the outer wall of the sliding ring via a snap-fit ​​assembly to limit the sliding ring after the screw is installed. A threaded groove is provided on the inner wall of the sliding ring, and a groove is provided on the top of the screw. The direction of the threaded groove is the same as the direction of the screw thread.

[0008] Furthermore, connecting blocks are fixedly connected to both ends of the sliding ring, and the outer walls of the connecting blocks are slidably connected to the inner wall of the nut.

[0009] Furthermore, each of the connecting blocks has a spring fixedly connected to its bottom end, and the other end of each spring is fixedly connected to the inner wall of the nut.

[0010] Furthermore, both ends of the card block are fixedly connected with protrusions, and the four sides of the inner wall of the nut are fixedly connected with protrusions.

[0011] Furthermore, both the outer wall of the screw and the outer wall of the nut are provided with washers, and the thickness of the sliding ring is half the thickness of the nut.

[0012] This utility model has the following beneficial effects:

[0013] In this invention, after the screw rotates into the sliding ring, a locking block is placed on the upper side of the sliding ring to limit the screw's movement. The rigid engagement between the locking block and the sliding ring forms a mechanical stop, effectively preventing the screw from loosening due to external forces such as vibration and impact. Compared with traditional anti-loosening methods, this invention has a more stable limiting effect and a compact and simple structure. No additional tools are required during assembly, which can quickly complete the locking and fixing, improves assembly efficiency, and reduces positioning time. Attached Figure Description

[0014] Figure 1 A perspective view of a snap-on fastener for easy blind installation and positioning proposed in this utility model;

[0015] Figure 2 This utility model provides a screw structure diagram for a snap-fit ​​fastener that facilitates blind installation and positioning.

[0016] Figure 3 This is a front sectional view of a snap-fit ​​fastener for easy blind installation and positioning proposed in this utility model.

[0017] Figure 4 This is a top sectional view of a snap-fit ​​fastener for easy blind installation and positioning proposed in this utility model.

[0018] Legend:

[0019] 1. Screw; 2. Washer; 3. Nut; 4. Sliding ring; 5. Connecting block; 6. Spring 1; 7. Threaded groove; 8. Locking block; 9. Spring 2; 10. Protrusion 1; 11. Protrusion 2; 12. Groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-3 As shown, one embodiment of this utility model provides a snap-fit ​​fastener for easy blind installation and positioning, including a screw 1, a sliding ring 4 on the outer wall of the screw 1, a threaded groove 7 on the inner wall of the sliding ring 4, a groove 12 on the top of the screw 1, the threaded groove 7 being in the same direction as the screw 1 thread, two springs 9 being fixedly connected to both sides of the inner wall of the nut 3, and a locking block 8 being fixedly connected to the other end of each spring 9, the outer wall of each locking block 8 being slidably connected to the inner wall of the nut 3, connecting blocks 5 being fixedly connected to both the front and rear ends of the sliding ring 4, the outer walls of each connecting block 5 being slidably connected to the inner wall of the nut 3, a spring 6 being fixedly connected to the bottom of each connecting block 5, the other end of each spring 6 being fixedly connected to the inner wall of the nut 3, a protrusion 10 being fixedly connected to both the front and rear ends of the locking block 8, and a protrusion 11 being fixedly connected to all four sides of the inner wall of the nut 3, a washer 2 being provided on both the outer wall of the screw 1 and the outer wall of the nut 3, the thickness of the sliding ring 4 being half the thickness of the nut 3, for limiting the sliding ring 4 after the screw 1 is installed.

[0022] For details, please refer to Figure 4The screw 1 has a sufficient thread length for installation. After the screw 1 is rotated into the sliding ring 4, both the screw 1 and nut 3 are made of carbon steel. Carbon steel is heat-treated to increase its strength, making it suitable for high-load applications. The washer 2 is made of rubber, which can absorb vibration energy and prevent the screw 1 from loosening or the parts from wearing out. Its thickness is 1.5mm. After the locking block 8 is fully exposed and locked onto the upper side of the sliding ring 4, the sliding ring 4 will not move completely to the bottom of the nut 3. The elasticity of the second spring 9 is sufficient to move the locking block 8 and make contact with and clamp the screw 1. The second protrusion 11 is made of hard plastic. After the locking block 8 just clamps the screw 1, the second protrusion 11 strikes the locking block 8. The strength of the second spring 9 is sufficient to push the protrusion 11 into contact with and clamp the screw 1. The first protruding block 10 passes through the second protruding block 11, producing a clear clicking sound, indicating that the assembly is in place. The first protruding block 10 is sloped inward, which facilitates the bending and rotation of the round protrusion at the inward end of the first protruding block 10. When the second protruding block 11 passes through the first protruding block 10, the second protruding block 11 strikes the locking block 8. By locking the locking block 8 on the upper side of the sliding ring 4, the screw 1 is limited. The rigid engagement between the locking block 8 and the sliding ring 4 forms a mechanical stop, effectively resisting the loosening of the screw 1 caused by external forces such as vibration and impact. Compared with the traditional anti-loosening method, it has a more stable limiting effect, and the structure is compact and simple. No additional tools are required during assembly to quickly complete the locking and fixing, improving assembly efficiency and significantly reducing positioning time.

[0023] Working principle: First, during installation, install the washer 2 into the inside of the screw 1 and the top of the nut 3 respectively. Then, place the nut 3 under the item and pass the screw 1 through the item, making it contact the sliding ring 4 inside the nut 3. Insert a screwdriver into the groove 12 and rotate the screw 1, so that the outer thread groove of the screw 1 contacts the inner thread groove 7 of the sliding ring 4, causing the sliding ring 4 to move downward. After the sliding ring 4 continues to move downward, the locking blocks 8 on both sides will be exposed. Through the springs 9 on both sides, the locking blocks 8 on both sides will be pushed inward to one side, causing the locking blocks 8 to hit the screw 1. The locking blocks 8 clamp the screw 1. As the screw moves, protrusion 10 contacts protrusion 21, causing both protrusions 211 to rotate outward. After the locking block 8 clamps the screw 1, protrusion 211 rotates inward again, striking the locking block 8 and producing a sound to alert the staff that the installation is complete. At the same time, the locking blocks 8 are respectively locked on the upper side of the sliding ring 4, limiting the sliding ring 4 and the screw 1, thus completing the installation. Meanwhile, the springs 16 on both sides ensure that the sliding ring 4 remains in the upper position, continuously blocking the locking blocks 8 on both sides, effectively resisting the loosening of the screw 1 caused by external forces such as vibration and impact. Compared with traditional anti-loosening methods, it has a more stable limiting effect.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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.

Claims

1. A snap-fit ​​fastener for easy blind installation and positioning, characterized in that, The screw (1) is provided with a sliding ring (4) on its outer wall. A nut (3) is connected to the outer wall of the sliding ring (4) by a snap-fit ​​assembly to limit the sliding ring (4) after the screw (1) is installed. A threaded groove (7) is provided on the inner wall of the sliding ring (4). A groove (12) is provided on the top of the screw (1). The direction of the threaded groove (7) is the same as the direction of the screw (1) thread.

2. The snap-fit ​​fastener for easy blind installation and positioning according to claim 1, characterized in that: The buckle assembly includes two springs (9) fixedly connected to both sides of the inner wall of the nut (3), and the other end of each spring (9) is fixedly connected to a locking block (8). The outer wall of each locking block (8) is slidably connected to the inner wall of the nut (3).

3. A snap-fit ​​fastener for easy blind installation and positioning according to claim 2, characterized in that: The sliding ring (4) is fixedly connected to the front and rear ends of the connecting block (5), and the outer wall of the connecting block (5) is slidably connected to the inner wall of the nut (3).

4. A snap-fit ​​fastener for easy blind installation and positioning according to claim 3, characterized in that: The bottom end of each connecting block (5) is fixedly connected to a spring (6), and the other end of each spring (6) is fixedly connected to the inner wall of the nut (3).

5. A snap-fit ​​fastener for easy blind installation and positioning according to claim 2, characterized in that: The front and rear ends of the card block (8) are fixedly connected with protrusion block one (10), and the four sides of the inner wall of the nut (3) are fixedly connected with protrusion block two (11).

6. A snap-fit ​​fastener for easy blind installation and positioning according to claim 1, characterized in that: Both the outer wall of the screw (1) and the outer wall of the nut (3) are provided with washers (2), and the thickness of the sliding ring (4) is half the thickness of the nut (3).

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