Anti-loosening screw

Abstract

The application discloses an anti-loosening screw, which comprises a screw rod, a first circular table, anti-skid edges, a second circular table, a high-elastic rubber ring, a prism, an annular clamping groove, a limiting edge pipe, an inner annular edge and an outer annular edge. The upper end of the screw rod is provided with the coaxial first circular table, the small-diameter end of the first circular table is connected with the screw rod, and the side wall of the first circular table is provided with a plurality of anti-skid edges. The application has simple structure and reasonable design, can make the screw have high-stable anti-loosening performance, and is not easy to fall off after the screw is installed.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-slip screws, in particular to the technical field of anti-slip screws. Background Art

[0002] Screws, a tool that uses the physics and mathematics of the circular rotation of an inclined surface and friction to gradually tighten components, are the most common fasteners used across a wide range of industries. Screws typically consist of a cap and a shank, and are often made of metal. Currently, most components in products are secured with screws. However, these fasteners are prone to loosening during transportation and continued use.

[0003] In order to improve the anti-loosening performance of screws, there are currently some screws with anti-loosening structures. For example, application number 201821445619.3 discloses a screw with anti-loosening function. The screw with anti-loosening function of this utility model adopts a groove with a depth decreasing in a clockwise direction to effectively fix the inside of the screw and the surrounding workpiece, and the thread profile of the screw is an arc thread profile and the cross-section of the screw is non-circular, which generates sufficient friction and extrusion elastic deformation to prevent the screw from loosening, ensure the stable connection between the screw and the workpiece, and have a good anti-loosening effect.

[0004] Although the above products have anti-loosening effects, there are still some defects. Although the grooves on the screw can enhance the anti-loosening performance, they will also reduce the strength of the screw. Moreover, the friction between the screw and the mounting hole is only increased. The screw can still rotate in the mounting hole with a little force. The anti-loosening effect of the screw is extremely limited.

[0005] Therefore, in order to make the screws have high strength and stable anti-loosening performance, it is necessary to propose anti-loosening screws. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems in the prior art and propose an anti-loosening screw, which can have high-strength and stable anti-loosening performance and is not easy to fall off after the screw is installed.

[0007] To achieve the above-mentioned purpose, the present invention proposes an anti-slip screw, including a screw, a first frustum, an anti-slip ridge, a second frustum, a high-elastic rubber ring, a prism, an annular groove, a limiting ridge tube, an inner annular ridge, and an outer annular ridge. The upper end of the screw is provided with a coaxial first frustum, the small-diameter end of the first frustum is connected to the screw, the side wall of the first frustum is provided with several anti-slip ridges, the upper end surface of the first frustum is provided with a coaxial second frustum, the small-diameter end of the second frustum is connected to the upper end of the first frustum, the side wall of the second frustum is provided with a coaxial high-elastic rubber ring, the upper end surface of the second frustum is provided with a coaxial prism, the side wall of the prism is provided with a coaxial annular groove, the prism is sleeved with a coaxial limiting ridge tube, the inner and outer walls of the limiting ridge tube are respectively provided with coaxial inner annular ridges and outer annular ridges, and the inner annular ridge is snapped into the annular groove.

[0008] Preferably, the lower end of the screw is conical.

[0009] Preferably, the plurality of anti-slip ridges are evenly distributed in a circle with the axis of the first frustum as the center, and the plurality of anti-slip ridges are all inclined and the inclination direction is consistent with the tightening direction of the screw.

[0010] Preferably, the circumscribed circle radius of the plurality of anti-slip edges is smaller than the radius of the minor-diameter end of the second frustum.

[0011] Preferably, the side wall of the second cone is provided with a plurality of coaxial annular grooves, and the inner wall of the high-elastic rubber ring is provided with a plurality of coaxial annular ridges, the annular ridges correspond to the annular grooves one by one, and the annular ridges are snapped into the annular grooves.

[0012] Preferably, the prism is a regular polygonal prism, the radius of the circumscribed circle of the prism is equal to the radius of the large diameter end of the second frustum, and the limiting prism is a regular polygonal tube adapted to the prism.

[0013] Preferably, the prism and the limiting prism tube have equal axial lengths, and a composite groove is provided on the upper end surface of the prism.

[0014] Preferably, the limiting rib tube is a plastic tube.

[0015] The beneficial effects of the present invention are as follows: the present invention has a simple structure and a reasonable design, and can enable the screw to have high-strength and stable anti-loosening performance, and the screw is not easy to fall off after installation; a double anti-loosening structure can be formed by arranging anti-slip edges and high-elastic rubber rings, and a single structure for preventing the screw from rotating is formed by cooperating with the limiting prism tube, the prism, and the limiting prism-shaped blind hole. The double anti-loosening structure combined with the single structure for preventing the screw from rotating can make the installed screw not easy to fall off; by arranging the limiting prism tube as a plastic tube, the limiting prism tube has a certain elasticity, and when the limiting prism tube is inserted between the prism and the limiting prism-shaped blind hole, the inner annular rib and the outer annular rib can be immersed between the prism and the limiting prism-shaped blind hole, thereby enabling the limiting prism tube to be stuck between the prism and the limiting prism-shaped blind hole. At the same time, when the anti-falling screw needs to be removed, the limiting prism tube is a plastic tube and is easy to be destroyed, which is convenient for removing the screw.

[0016] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front cross-sectional view of the anti-slip screw of the present invention;

[0018] Figure 2 It is a top view of the anti-slip screw of the present invention. DETAILED DESCRIPTION

[0019] See Figure 1 、 Figure 2 The anti-slip screw of the present invention includes a screw 1, a first frustum 2, an anti-slip ridge 21, a second frustum 3, a high-elastic rubber ring 31, a prism 4, an annular groove 41, a limiting rib tube 5, an inner annular ridge 51, and an outer annular ridge 52. The upper end of the screw 1 is provided with a coaxial first frustum 2, the small diameter end of the first frustum 2 is connected to the screw 1, and the side wall of the first frustum 2 is provided with a plurality of anti-slip ridges 21. The upper end surface of the first frustum 2 is provided with a coaxial second frustum 3, the small diameter end of the second frustum 3 is connected to the upper end of the first frustum 2, and the side wall of the second frustum 3 is provided with a coaxial high-elastic rubber ring 31. The upper end surface of the second frustum 3 is provided with a coaxial prism 4, and the side wall of the prism 4 is provided with a coaxial annular groove 41. A coaxial limiting rib tube 5 is sleeved on the prism 4, and the inner and outer walls of the limiting rib tube 5 are respectively provided with coaxial inner annular ridges 51 and outer annular ridges 52, and the inner annular ridge 51 is snapped into the annular groove 41.

[0020] Wherein, the lower end of the screw 1 is conical.

[0021] Among them, the plurality of anti-slip ridges 21 are evenly distributed in a circle with the axis of the first frustum 2 as the center. The plurality of anti-slip ridges 21 are all inclined and the inclination direction is consistent with the tightening direction of the screw 1 .

[0022] The circumscribed circle radius of the plurality of anti-slip ridges 21 is smaller than the radius of the minor-diameter end of the second frustum 3 .

[0023] The side wall of the second truncated cone 3 is provided with a plurality of coaxial annular grooves 301 , and the inner wall of the high elastic rubber ring 31 is provided with a plurality of coaxial annular ridges 3101 . The annular ridges 3101 correspond to the annular grooves 301 one by one, and the annular ridges 3101 are inserted into the annular grooves 301 .

[0024] The prism 4 is a regular polygonal prism, the circumscribed circle radius of the prism 4 is equal to the radius of the large diameter end of the second frustum 3 , and the limiting prism 5 is a regular polygonal tube adapted to the prism 4 .

[0025] The axial lengths of the prism 4 and the limiting prism tube 5 are equal, and a composite groove 42 is provided on the upper end surface of the prism 4 .

[0026] Wherein, the limiting rib tube 5 is a plastic tube.

[0027] Working process of the present invention:

[0028] During the operation of the anti-slip screw of the present invention, a limiting prism-shaped blind hole adapted to the limiting prism tube 5 is first provided on the installation surface, and then a mounting hole is provided at the bottom of the limiting blind hole. The screw 1 is screwed into the installation hole through the composite groove 42 or the prism 4. The anti-slip rib 21 can enhance the friction between the first truncated cone 2 and the installation hole, thereby enhancing the anti-loosening performance of the screw. The high-elastic rubber ring 31 can support the second truncated cone 3 upward, thereby subjecting the screw 1 to an upward pulling force, making the screw 1 not easy to loosen, thereby enhancing the anti-loosening performance of the screw. Yes, when the screw is screwed into place, the prism 4 will sink into the limiting prism blind hole, and the prism 4 will adapt to the limiting prism blind hole, and then the limiting prism tube 5 will be inserted between the prism 4 and the limiting prism blind hole, and the inner annular rib 51 will be stuck in the annular groove. The limiting prism tube 5 can prevent the prism 4, that is, the screw from rotating. The double anti-loosening structure formed by the anti-slip rib 21 and the high-elastic rubber ring 31 cooperates with the screw rotation prevention structure formed by the limiting prism tube 5, the prism 4, and the limiting prism blind hole, which can make the installed screws not easy to fall off.

[0029] The present invention has a simple structure and a reasonable design, which can make the screw have high-strength and stable anti-loosening performance, and the screw is not easy to fall off after installation; a double anti-loosening structure can be formed by arranging the anti-slip ribs 21 and the high-elastic rubber ring 31, and a single structure for preventing the screw from rotating is formed by cooperating with the limiting rib tube 5, the prism 4, and the limiting prism-shaped blind hole. The double anti-loosening structure combined with the single structure for preventing the screw from rotating can make the installed screw not easy to fall off; by arranging the limiting rib tube 5 as a plastic tube, the limiting rib tube 5 has a certain elasticity, and when the limiting rib tube 5 is inserted between the prism 4 and the limiting prism-shaped blind hole, the inner annular rib 51 and the outer annular rib 52 can be immersed between the prism 4 and the limiting prism-shaped blind hole, thereby making the limiting rib tube 5 able to be stuck between the prism 4 and the limiting prism-shaped blind hole. At the same time, when the anti-falling screw needs to be removed, the limiting rib tube 5 is a plastic tube and can be easily destroyed, which is conducive to the removal of the screw.

[0030] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Anti-slip screw, characterized in that: include: A screw (1), a first truncated cone (2), an anti-skid ridge (21), a second truncated cone (3), a high-elastic rubber ring (31), a prism (4), an annular groove (41), a limiting prism tube (5), an inner annular ridge (51), and an outer annular ridge (52), wherein the upper end of the screw (1) is provided with a coaxial first truncated cone (2), the small-diameter end of the first truncated cone (2) is connected to the screw (1), the side wall of the first truncated cone (2) is provided with a plurality of anti-skid ridges (21), the upper end surface of the first truncated cone (2) is provided with a coaxial second truncated cone (3 ), the small diameter end of the second truncated cone (3) is connected to the upper end of the first truncated cone (2), the side wall of the second truncated cone (3) is provided with a coaxial high-elastic rubber ring (31), the upper end surface of the second truncated cone (3) is provided with a coaxial prism (4), the side wall of the prism (4) is provided with a coaxial annular groove (41), the prism (4) is sleeved with a coaxial limiting prism tube (5), the inner and outer walls of the limiting prism tube (5) are respectively provided with a coaxial inner annular rib (51) and an outer annular rib (52), and the inner annular rib (51) is clamped into the annular groove (41).

2. The anti-slip screw according to claim 1, wherein: The lower end of the screw (1) is conical.

3. The anti-slip screw according to claim 1, wherein: The plurality of anti-slip ridges (21) are evenly distributed in a circular shape with the axis of the first truncated cone (2) as the center, and the plurality of anti-slip ridges (21) are all inclined and the inclination direction is consistent with the tightening direction of the screw (1).

4. The anti-slip screw according to claim 1, wherein: The circumscribed circle radius of the plurality of anti-slip edges (21) is smaller than the radius of the minor-diameter end of the second frustum (3).

5. The anti-slip screw according to claim 1, wherein: The side wall of the second truncated cone (3) is provided with a plurality of coaxial annular grooves (301), and the inner wall of the high-elastic rubber ring (31) is provided with a plurality of coaxial annular ridges (3101). The annular ridges (3101) correspond to the annular grooves (301) one by one, and the annular ridges (3101) are inserted into the annular grooves (301).

6. The anti-slip screw according to claim 1, wherein: The prism (4) is a regular polygonal prism, the radius of the circumscribed circle of the prism (4) is equal to the radius of the large diameter end of the second truncated cone (3), and the limiting prism (5) is a regular polygonal tube adapted to the prism (4).

7. The anti-slip screw according to claim 1, wherein: The prism (4) and the limiting prism tube (5) have equal axial lengths, and a composite groove (42) is provided on the upper end surface of the prism (4).

8. The anti-slip screw according to claim 1, wherein: The limiting rib tube (5) is a plastic tube.

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