CN206830615U - A kind of stop nut based on circular cone EDS maps screw thread - Google Patents

Abstract

The utility model discloses an anti-loosening nut based on conical surface distribution threads, which comprises a nut body, the threaded hole of the nut body is a tapered through hole with a certain taper, and the thread edge in the threaded hole has a certain taper. conical distribution. The utility model can provide an anti-loosening nut with good anti-loosening effect on the premise of basically not changing the use mode. The size of the screw hole gradually shrinks, and the screw and the nut will be deformed to a certain extent due to mutual extrusion. The pressure on the contact surface between them gradually increases, and then the friction force between the screw and the nut gradually increases, thereby achieving a better anti-loosening effect.

Description

A kind of anti-loosening nut based on conical surface distributed threads

technical field

The utility model provides an anti-loosening nut based on threads distributed along a conical surface, which can largely avoid the loosening of the nut after being tightened, and belongs to the field of mechanical fasteners.

Background technique

Screws and nuts are commonly used fasteners in all walks of life. Installed screws and nuts are easy to loosen or even loosen due to factors such as vibration and external impact, resulting in fastening failure, which in turn causes mechanical equipment to malfunction and cause losses. At present, the anti-loosening nuts on the market generally have problems such as complex structure, many nut fastening and connection procedures, inconvenient disassembly and maintenance, and even cannot be reused. The utility model provides a simple mechanical structure which can avoid the above problems to a large extent, that is, through the improvement, the threads are distributed on the conical surface, so as to increase the friction between the nut and the screw and achieve the effect of loosening.

Utility model content

In order to avoid the loosening of the tightened nut during use due to factors such as vibration and seriously affect the stability of the relevant mechanical structure, the utility model provides a new anti-loosening nut that can be automatically locked after tightening. It can be widely used in daily life, especially in some mechanical structures that require extremely high safety and require the use of screws and nuts. To a great extent avoid the loosening of the tightened nuts due to vibration and other factors during use, which will seriously affect the stability of the relevant mechanical structure.

The technical scheme of this utility model is as follows:

A locknut with thread distribution based on a conical surface, comprising a nut body, the threaded hole of the nut body is a tapered through hole with a certain taper, and the threads in the threaded hole are distributed along the conical surface with a certain taper.

Further, the side of the nut main body is provided with an identifier indicating the direction in which the screw is screwed in.

Further, the identifier is an arrow.

Further, the arrow points from the big end of the threaded hole to the small end.

Further, the taper of the threaded hole is 0 ^o <θ≤8 ^o .

Further, the material of the nut body includes metal or engineering plastics.

The gain effect of the utility model is that a locknut with good anti-loosening effect can be provided under the premise of basically not changing the use mode, the size of the screw hole gradually shrinks, and the screw and the nut will be squeezed to a certain extent due to mutual extrusion. Deformation, the pressure on the contact surface between the screw and the nut gradually increases, and then the friction between the screw and the nut gradually increases, so as to achieve a better anti-loosening effect.

Description of drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the utility model.

Fig. 2 is a three-dimensional schematic diagram of an embodiment of the utility model.

detailed description

The purpose of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific examples. The examples cannot be repeated here one by one, but the implementation of the utility model is not therefore limited to the following examples.

As shown in Fig. 1 and Fig. 2, a kind of anti-loosening nut based on conical surface distribution threads includes a nut body, the threaded hole of the nut body is a tapered hole with a certain taper, and the thread edge in the threaded hole has a certain The conical surface of the taper is distributed, and the taper of the threaded hole is ^0o < ^θ≤8o . If the angle is too small, the extrusion locking effect will not be achieved, and if the angle is too large, the connection length between the nut and the screw will be affected.

Specifically, the side of the nut body is provided with an identifier indicating the screwing direction, and the identifier is an arrow pointing from the large end of the threaded hole to the small end.

The material of the nut body includes metal or engineering plastics,

This embodiment provides a locknut that can largely prevent the nut from loosening due to vibration and other factors during use. An arrow indicating the screwing direction of the screw is engraved on the outside of the locknut, and the screw must follow the direction of the arrow. Screw in the nut; the thread on the nut screw hole is distributed along a conical surface with a certain taper, that is, the screw hole is a tapered hole. According to the direction of the arrow outside the nut, the screw is screwed in from the larger side of the hole, and from the smaller hole. One side is screwed out, as the screw is gradually screwed in, the size of the screw hole gradually shrinks, the screw and the nut will be deformed to a certain extent due to mutual extrusion, and the pressure on the contact surface between the screw and the nut will gradually increase, thereby making the screw The friction between the nut and the nut increases gradually, so as to achieve a better anti-loosening effect.

Different from the existing anti-loosening nuts, the internal threads of the anti-loosening nuts in this embodiment are distributed on a conical inclined surface instead of a traditional cylindrical surface, that is, the threaded hole is a through hole with a diameter gradually reduced. The screw goes in from the side with the larger hole and out from the side with the smaller hole. The diameter of the large hole is determined according to the nut specification, and the specific value determination method is the same as that of the traditional nut; the diameter of the small hole is smaller than that of the large hole, and there is a conical surface with a certain taper between the two holes. As the screw is screwed in from one side of the large hole, since the diameter of the screw hole of the nut gradually decreases, the friction force on the contact surface between the screw and the nut increases gradually, thereby achieving the effect of anti-loosening. At the same time, an arrow pointing from the side of the large hole to the side of the small hole is engraved on the outside of the nut, that is, the direction of the arrow is the direction in which the screw is screwed in. The locknut is made of spring steel, carbon steel, stainless steel, alloy steel, copper, etc., and has good plasticity. During use, users can choose nuts with different degrees of taper on the conical surface of the thread according to different needs, so as to achieve different degrees of anti-loosening effect. Generally, the larger the taper of the conical surface where the thread is located, the stronger the anti-loosening effect, but the more troublesome installation and disassembly; on the contrary, the smaller the taper of the conical surface where the thread is located, the weaker the anti-loosening effect, but the easier the installation and disassembly . It can be seen that this kind of locknut has good practicability and applicability.

The above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (6)

1. A locknut based on conical surface distribution threads, characterized in that: it includes a nut body, the threaded hole of the nut body is a tapered through hole with a certain taper, and the thread edge in the threaded hole has a certain taper distribution of cones. 2. The anti-loosening nut based on conical surface distributed threads according to claim 1, characterized in that: the side of the nut main body is provided with an identifier indicating the direction in which the screw is screwed in. 3. The anti-loosening nut based on conical surface distributed threads according to claim 2, characterized in that: said identifier is an arrow. 4. The anti-loosening nut based on conical surface thread distribution according to claim 3, characterized in that: said arrow points from the large end of the threaded hole to the small end. 5. The anti-loosening nut based on conical surface thread distribution according to claim 1, characterized in that: the taper of the threaded hole is 0 ^o <θ≤8 ^o . 6. The anti-loosening nut based on conical surface distributed threads according to claim 1, characterized in that: the material of the nut body includes metal or engineering plastics.