Anti-skid structure for screw

Abstract

The utility model discloses an anti-skidding structure for a screw, which comprises a locking platform, the screw and an anti-skidding structure, the locking platform is provided with a mounting surface, the mounting surface is provided with a mounting hole, the screw is mounted in the mounting hole, the anti-skidding structure is arranged around the mounting hole, and the anti-skidding structure is arranged on the locking platform. The anti-skid structure abuts against the side, close to the installation face, of a nut of the screw. Through the application of the anti-skid structure for the screw, the friction force between the nut and the contact surface is increased, the situation that the screw slips during assembly is avoided, meanwhile, the risks that the screw falls off and assembly fails are reduced, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, in particular to an anti-slip structure for screws. Background Art

[0002] With the development of assembly processes, the requirements for the fastening performance of screws and the anti-slip performance after fastening are becoming higher and higher. In the existing fastening methods, the screw head and the contact surface adopt surface contact. Through the pressure in the reverse direction of the thread, the screw head and the contact surface are pressed tightly, thereby increasing the friction between the screw head and the contact surface. However, if the torque generated by the screw is insufficient when the screw is being screwed, the friction between the nut and the screw will be insufficient, resulting in the screw slipping, which increases the risk of the screw coming out and the failure of part assembly, and even causes potential safety hazards. Content of the Utility Model

[0003] In view of this, to solve the above problems, the purpose of the utility model is to provide an anti-slip structure for screws, including:

[0004] A locking platform, a screw and an anti-slip structure. The locking platform has an installation surface, and an installation hole is formed on the installation surface. The screw is installed in the installation hole, and the anti-slip structure is arranged around the installation hole and abuts against the side of the nut of the screw close to the installation surface.

[0005] In another preferred embodiment, the anti-slip structure includes: a plurality of protrusions, and the plurality of protrusions are arranged around the installation hole and extend from the installation surface towards the nut.

[0006] In another preferred embodiment, the protrusions are arranged in a quadrangular pyramid structure.

[0007] In another preferred embodiment, the plurality of protrusions are uniformly arranged in a circular array.

[0008] In another preferred embodiment, a sharp end is formed at one end of each protrusion away from the installation surface.

[0009] In another preferred embodiment, a vertex is provided at a position of each sharp end away from the installation surface.

[0010] In another preferred embodiment, the distance between every two adjacent vertices is 1 mm.

[0011] In another preferred embodiment, the anti-slip structure is made of a plastic material.

[0012] In another preferred embodiment, the vertical distance from the vertex to the installation surface is 0.2 - 0.5 mm.

[0013] Due to the adoption of the above technical solution, the positive effects of the present utility model compared with the prior art are as follows:

[0014] By applying the present utility model, an anti-slip structure for screws is provided, which increases the friction between the nut and the contact surface, avoids the slipping of screws during assembly, reduces the risk of screw detachment and assembly failure, and effectively reduces the occurrence of potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of an anti-slip structure for screws of the present utility model;

[0016] Figure 2 It is the structure diagram of the installation surface of an anti-slip structure for screws of the present utility model;

[0017] Figure 3 It is the schematic diagram of the contact between the protrusion of an anti-slip structure for screws of the present utility model and the bottom surface of the nut.

[0018] In the drawings:

[0019] 1, locking platform; 11, main board; 12, side board; 13, auxiliary board; 2, screw; 3, anti-slip structure; 4, protrusion; 5, mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solution of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] It should be particularly noted that the "horizontal" and "vertical" in the present utility model are used to illustrate the approximate positional relationship, rather than the strict "horizontal plane" or "vertical plane".

[0023] Such as Figures 1 to 3As shown in the figure, a non-slip structure for a screw in a preferred embodiment is shown, including: a locking platform, a screw 2, and a non-slip structure 3. The locking platform has an installation surface, and an installation hole 5 is formed on the installation surface. The screw 2 is installed in the installation hole 5, and the non-slip structure 3 is arranged around the installation hole 5, and the non-slip structure 3 abuts against the side of the nut of the screw 2 close to the installation surface. Further, the screw 2 extends into the installation hole 5, and the bottom surface of the nut of the screw 2 abuts against the protrusion 4 on the non-slip structure 3. Through the contact between the nut and the protrusion 4 on the non-slip structure 3, the anti-slip effect is achieved.

[0024] Further, as a preferred embodiment, the locking platform 1 can be any structural part used to realize the installation of the screw, especially a part that can tightly abut against the nut of the screw.

[0025] Further, as a preferred embodiment, the locking platform 1 preferably includes: a main board 11, two side boards 12, and a sub-board 13. The main board 11 is arranged in the horizontal direction, and the installation surface is arranged on the main board 11. The two side boards 12 are both arranged in an isosceles triangle structure. One end of each of the two side boards 12 is fixedly connected to both sides of the main board 11 respectively, and the other end of each of the two side boards 12 is connected to the surface of the sub-board 13. The sub-board 13 is connected to the main board 11, and the sub-board 13 is inclined with respect to the main board 11 in the horizontal direction. Further, an included angle is formed between one end of the sub-board 13 and one end of the main board 11, and the included angle is preferably an obtuse angle.

[0026] Further, as a preferred embodiment, the non-slip structure 3 includes: a plurality of protrusions 4. The plurality of protrusions 4 are arranged around the installation hole 5, and the protrusions 4 extend from the installation surface towards the nut. Further, the protrusions 4 extend upward above the installation surface.

[0027] Further, as a preferred embodiment, the protrusion 4 is arranged in a quadrangular pyramid structure.

[0028] Further, as a preferred embodiment, each connection of the protrusion 4 to the installation surface has four sides connected end to end in sequence, and at least one of the above sides is shared between every two adjacent protrusions 4.

[0029] Further, as a preferred embodiment, the installation hole 5 is preferably a circular hole.

[0030] Further, as a preferred embodiment, the plurality of protrusions 4 are jointly arranged in a uniform circular array. Further, the plurality of protrusions 4 are evenly arranged around the center of the installation hole 5.

[0031] Further, as a preferred embodiment, a sharp end is formed at one end of each protrusion 4 away from the installation surface.

[0032] Further, as a preferred embodiment, each sharp end has a vertex at a position away from the mounting surface, and this vertex is preferably the part of the protrusion 4 closest to the nut.

[0033] Further, as a preferred embodiment, the anti-slip structure 3 is made of a plastic material.

[0034] Further, as a preferred embodiment, the vertex abuts against the bottom surface of the nut. When the screw 2 moves downward, the vertex is allowed to be compressed and deformed, and preferably is squeezed from a sharp shape to a flat shape.

[0035] Further, as a preferred embodiment, when each vertex is allowed to be compressed and deformed, a small contact surface is formed between the above-mentioned flat shape and the bottom surface of the nut. At this time, it is the small surface contact state between the protrusion 4 and the bottom surface of the nut.

[0036] Further, as a preferred embodiment, the distance between every two adjacent vertices is 1 mm.

[0037] Further, as a preferred embodiment, the vertical distance from each vertex to the mounting surface is 0.2 - 0.5 mm. Further, when the protrusion is deformed, even if the screw 2 is tightened and set, the bottom surface of the nut preferably presses on the protrusion 4 instead of the direct contact between the bottom surface of the nut and the mounting surface.

[0038] Further, as a preferred embodiment, the mounting hole 5 is a through hole or a threaded hole.

[0039] Further, as a preferred embodiment, when the mounting hole 5 is a through hole, it further includes an external component. A hole is opened on the external component, and threads are provided in the hole. The inner contour of the hole is the same as the inner contour of the mounting hole 5. After the screw 2 extends into the mounting hole 5, the screw 2 connects the locking platform 1 and the external device through the thread fit with the hole, and the nut remains in contact with the anti-slip structure 3, playing the role of preventing the screw 2 from slipping.

[0040] Further, as a preferred embodiment, when the mounting hole 5 is a threaded hole, the screw 2 is connected through the thread fit with the mounting hole 5.

[0041] The above is only the preferred embodiment of the present utility model, and does not limit the implementation manners and protection scope of the present utility model accordingly.

[0042] The present utility model also has the following implementation manners on the above basis:

[0043] In a further embodiment of the present utility model, the locking platform 1 is preferably arranged at the corner or end of the automotive part.

[0044] In a further embodiment of the present utility model, the nut of the screw 2 can be in shapes such as circular, hexagonal, square, etc., to meet different usage requirements, and the outer contour of the nut is at least larger than the inner contour of the mounting hole 5.

[0045] In a further embodiment of the present utility model, the contact area between the bottom surface of the nut of the screw 2 and the mounting surface is preferably a large contact surface, and at this time, it is a large surface contact state between the nut of the screw 2 and the mounting surface.

[0046] In a further embodiment of the present utility model, when the screw 2 is screwed into the mounting hole 5, according to the pressure formula: P = T / A, when the screw 2 is screwed evenly, the torque T of the screw 2 is a fixed value, A is the contact area between the nut and the mounting surface, and it can be obtained that the pressure P generated by the screw 2 on the mounting surface and the contact area A are in an inverse relationship. For example: assume that the contact area A between the bottom surface of the nut and the mounting surface is 0.2 cm 2 , the torque T of the screw is 1 N·m, and by calculation, the pressure P generated by the screw 2 on the mounting surface is 50000 pa.

[0047] According to the friction formula: F = μN, the friction coefficient μ is a fixed value, N is the normal pressure received by the mounting surface, and it can be obtained that the friction force F between the screw 2 and the mounting surface and the normal pressure N are in a direct relationship. Since the screw 2 is vertically driven into the mounting hole 5, the normal pressure N can be converted from the pressure P. The above pressure of 50000 pa is equivalent to an object with a weight of 500 g pressing on the mounting surface, and the acceleration due to gravity is a constant 9.8 N / kg. According to the mass and the acceleration due to gravity, the normal pressure N received by the mounting surface is 4.9 Newtons. Assume that the friction coefficient μ is 1, and by calculation, the friction force F is 4.9 Newtons.

[0048] From the above calculation, it can be seen that when the torque T of the screw 2 is constant, the smaller the contact area A between the screw 2 and the mounting surface, the greater the normal pressure N received by the mounting surface, and the greater the friction force F between the screw 2 and the mounting surface. Further, when the anti-slip structure 3 is installed, the contact area between the nut and the several protrusions 4 is much smaller than the contact area between the nut and the mounting surface, that is, the friction force between the nut and the several protrusions 4 is greater than the friction force between the nut and the mounting surface, thereby realizing the anti-slip work of the anti-slip structure 3 on the screw 2.

[0049] The specific operation steps of the anti-slip structure for the screw of the present utility model:

[0050] Select the screw 2 with a nut of appropriate shape according to the needs of the situation. When the mounting hole 5 is a threaded hole, insert the screw 2 into the mounting hole 5 and turn the nut to make the screw 2 move downward according to the thread fit with the mounting hole 5. The bottom surface of the nut abuts against the vertex of the anti-slip structure 3, so that a point contact state is formed between the nut and the anti-slip structure 3 or at least changed to the above-mentioned small surface contact state. Compared with the above-mentioned large surface contact state, the total area of the above-mentioned several small contact surfaces is smaller than the area of the above-mentioned large contact surface. According to the above friction formula, it can be obtained that the smaller the contact area, the greater the generated friction, so that the friction between the nut and the anti-slip structure 3 is increased, thus realizing the anti-slip effect of the anti-slip structure 3 on the screw 2.

[0051] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be able to realize that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-slip structure for screws, characterized in that, Including: A locking platform, a screw, and an anti-slip structure. The locking platform has an installation surface, and an installation hole is formed on the installation surface. The screw is installed in the installation hole. The anti-slip structure is arranged around the installation hole, and the anti-slip structure abuts against the side of the nut of the screw close to the installation surface.

2. The anti-slip structure for a screw according to claim 1, characterized in that, The anti-slip structure includes: a plurality of protrusions. The plurality of protrusions are arranged around the installation hole, and the protrusions extend from the installation surface towards the nut.

3. The anti-slip structure for a screw according to claim 2, characterized in that, The protrusions are arranged in a quadrangular pyramid structure.

4. The anti-slip structure for a screw according to claim 2, characterized in that, The plurality of protrusions are uniformly arranged in a circular array.

5. The anti-slip structure for a screw according to claim 2, characterized in that, A sharp end is formed at one end of each protrusion away from the installation surface.

6. The anti-slip structure for a screw according to claim 5, characterized in that, A vertex is provided at a position of each sharp end away from the installation surface.

7. The anti-slip structure for a screw according to claim 6, characterized in that, The distance between every two adjacent vertices is 1 mm.

8. The anti-slip structure for a screw according to claim 1, characterized in that, The anti-slip structure is made of a plastic material.

9. The anti-slip structure for a screw according to claim 6, characterized in that, The vertical distance from the vertex to the installation surface is 0.2 - 0.5 mm.

10. The anti-slip structure for a screw according to claim 1, characterized in that, The installation hole is a through hole or a threaded hole.

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