Anti-following-rotation nut

Abstract

The utility model discloses an anti-following-rotation nut which comprises a body, threads are arranged in the center of the body, an annular gasket is arranged at the bottom of the body, a plurality of protruding points are evenly distributed at the bottom of the annular gasket, and the protruding points, the body and the annular gasket are integrally formed. The nut is reasonable and ingenious in structural design, after the nut is connected with a bolt, the annular gasket serves as a contact face with equipment, the protruding points of the annular gasket are stressed in a concentrated mode after the nut is fastened, the pressure intensity between the protruding points and the equipment face is increased, friction force is greatly increased, and when the nut needs to be disassembled, due to the fact that the friction force between the nut and the equipment is large, the nut is not damaged. Therefore, the bolt and the nut can be disassembled more easily.

Description

Technical Field

[0001] This utility model relates to an anti-rotation nut, belonging to the field of fastener technology. Background Technology

[0002] Bolts and nuts are commonly used for connecting and fixing various equipment. During the installation or disassembly of bolts and nuts, due to insufficient friction between the nut and the equipment, the nut will rotate when the bolt is tightened, making it difficult to tighten the bolt or to quickly separate it from the nut. The nut needs to be fixed, which is very inconvenient when operating on equipment with limited space. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides an anti-rotation nut that can increase the friction between the nut and the contact surface of the equipment, thereby preventing the nut and bolt from rotating together.

[0004] To achieve this objective, the structure adopted by this utility model is as follows: an anti-rotation nut, including a body, a through hole in the center of the body, a thread inside the through hole, and an annular washer at the bottom of the body, with multiple protrusions evenly distributed at the bottom of the annular washer.

[0005] The protrusion is a spherical structure that protrudes downwards from the annular washer.

[0006] The height of the protrusion is 0.3±0.1mm.

[0007] The bottom of the annular washer has three protrusions evenly distributed.

[0008] The cross-section of the body is polygonal.

[0009] Each polygon has an arc-shaped reinforcing rib between its edge and the annular washer.

[0010] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. After the nut and bolt are connected, the annular washer serves as the contact surface with the equipment. Its protrusions are subjected to concentrated force after the nut is tightened, and the pressure between the protrusions and the equipment surface increases, which greatly increases the friction. When disassembly is required, the bolt and nut can be disassembled more easily because the friction between the nut and the equipment is greater. Attached Figure Description

[0011] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is the formal structural diagram of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] like Figure 1 , Figure 2 The anti-rotation nut shown includes a body 1 with a through hole in the center and a thread inside. A ring-shaped washer 2, larger in diameter than the body 1, is located at the bottom of the body 1. Multiple protrusions 3 are evenly distributed on the bottom of the ring-shaped washer 2. The protrusions 3 concentrate pressure when the pressure between the bolt and nut increases, thus increasing the friction between the protrusions 3 and the contact surface of the equipment. When the drive bolt is tightened, only a certain pressure needs to be achieved between the nut and the equipment. This pressure can be achieved by the operator holding the nut with one hand and tightening the bolt with the other. At this point, the friction between the protrusions 3 and the contact surface of the equipment increases. When the drive bolt continues to be driven, it is not necessary to hold the nut; the nut will not rotate with the bolt, thus tightening the bolt. When the drive bolt is loosened, because the bolt and nut remain clamped, the friction between the protrusions 3 and the contact surface of the equipment is high. When the bolt rotates momentarily, the nut will not rotate with it, thus facilitating the disassembly of the bolt and nut.

[0018] The protrusion 3 is a spherical structure that protrudes downwards from the annular washer. The spherical structure can increase the contact surface, allowing the nut to fit the surface of equipment with low flatness. At the same time, the spherical structure has strong compressive strength, enabling it to withstand greater pressure while ensuring a very small contact surface, thus avoiding deformation.

[0019] Meanwhile, the surface of the raised dot 3 can be polished to increase its roughness, or anti-slip textures can be set on the surface to further improve friction.

[0020] The height of protrusion 3 is 0.3±0.1mm. If the height of protrusion 3 is too low, it will be easily worn flat and lose its anti-rotation function. If the protrusion is too high, the gap between the nut and the bolt will be too large, which will easily lead to water seepage and corrosion.

[0021] The bottom of the annular washer 2 preferably has three protrusions 3 evenly distributed. If there are too many protrusions 3, the pressure concentrated on each protrusion 3 will be too small, resulting in insufficient friction and poor anti-rotation effect. If there are fewer than three protrusions 3, the structure between the bolt and nut will be unstable, and the connection reliability will be reduced.

[0022] The cross-section of the body 1 is polygonal, which facilitates the fixing of the nut. Each polygonal face has an arc-shaped protruding reinforcing rib 4 between it and the annular washer 2. The reinforcing rib 4 strengthens the connection between the body 1 and the annular washer 2. At the same time, since the diameter of the annular washer 2 is larger than that of the body 1, the presence of the reinforcing rib 4 can enhance the support strength of the annular washer 2 and prevent the pressure of the protrusion 3 from being too concentrated, which would cause the annular washer 3 to deform.

[0023] Because of the anti-rotation effect of the anti-rotation nut disclosed in this case, it makes it easier to disassemble the bolt and nut when the nut is used on equipment with relatively narrow space, reducing the space restriction on operation.

[0024] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A nut against rotation, comprising a body (1) provided with a through hole in the center, and a thread in the through hole, characterized in that, The bottom of the body (1) is provided with a ring-shaped gasket (2), and the bottom of the ring-shaped gasket (2) is uniformly provided with a plurality of convex points (3).

2. The anti-backlash nut of claim 1 wherein, The convex point (3) is a spherical structure protruding downward to the ring-shaped gasket (2).

3. The anti-backlash nut of claim 1 wherein, The height of the convex point (3) is 0.3±0.1mm.

4. The anti-backlash nut of claim 1 wherein, The bottom of the ring-shaped gasket (2) is uniformly provided with three convex points.

5. The anti-backlash nut of claim 1 wherein, The cross section of the body (1) is a polygon.

6. The anti-backlash nut of claim 5 wherein, The surface corresponding to each side of the polygon is provided with a circular-arc-shaped reinforcing rib (4) between the ring-shaped gasket (2).

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