CN111664156A

CN111664156A - Threaded connection device with anti-loosening function

Info

Publication number: CN111664156A
Application number: CN202010703094.4A
Authority: CN
Inventors: 刘跃群
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2020-09-15

Abstract

The invention discloses a threaded connection device with an anti-loosening function, and relates to the technical field of fastening devices; the anti-loosening nut comprises an anti-loosening nut body, a disc-shaped nut and a bolt; the locknut body and the disc-shaped nut are provided with threaded holes matched with the bolts; one end surface of the locknut body is provided with a limit groove; the outer side of the dish-shaped nut is polygonal; a plurality of telescopic grooves are formed in the outer side of the disc-shaped nut; a plurality of telescopic grooves are arranged on the inner hole of the dished nut; the invention can effectively prevent the nut from loosening under the action of impact, vibration and variable load, and enhances the safety.

Description

Threaded connection device with anti-loosening function

Technical Field

The invention relates to the technical field of fastening devices, in particular to a threaded connection device with a locking function.

Background

In the prior art, the fastening of the connected object is usually realized by bolts, gaskets and nuts, and the connected object does not automatically loosen under the static load condition. However, there are inevitably shock, vibration, and variable load effects due to the working conditions of the coupling. Under the working conditions, the friction force between the thread pairs can disappear or reduce instantly; meanwhile, in the occasions of high temperature or large temperature change, the material can generate creep and stress relaxation, and the friction force is also reduced. Under the action of a plurality of times, the connection can be gradually loosened, and safety accidents are caused.

Disclosure of Invention

The invention aims to provide a threaded connection device with a locking function, which has the advantages of simple structure, reasonable design and convenient use, and aims to overcome the defects and shortcomings of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the anti-loosening nut comprises an anti-loosening nut body, a disc-shaped nut and a bolt; the locknut body and the disc-shaped nut are provided with threaded holes matched with the bolts; one end surface of the locknut body is provided with a limit groove; the outer side of the dish-shaped nut is polygonal; a plurality of outer telescopic grooves of the disc-shaped nut are arranged on the outer side of the disc-shaped nut; the threaded hole of the dished nut is provided with a plurality of inner telescopic grooves of the dished nut.

Furthermore, one end of the locknut body is provided with a limit groove matched with the disc-shaped nut;

further, the dished nut is conical in shape as a whole.

Further, the dish-shaped nut is arranged in the limiting groove.

After adopting the structure, the invention has the beneficial effects that: the threaded connection device with the anti-loosening function can effectively prevent the nut from loosening under the action of impact, vibration and variable load, has enhanced safety, and has the advantages of simple structure, reasonable arrangement, low manufacturing cost and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a locknut body;

FIG. 2 is a schematic structural view of a disc nut;

FIG. 3 is another directional structural view of the disc nut;

FIG. 4 is a schematic structural view of embodiment 1;

FIG. 5 is a schematic structural view of example 2;

FIG. 6 is a schematic structural view of embodiment 3.

Description of reference numerals:

1. a locknut body; 2. a threaded hole; 3. a limiting groove; 4. the outer telescopic groove of the disc-shaped nut; 5. a disc nut; 6. a telescopic groove is arranged in the disc-shaped nut; 7. a bolt; 8. a common nut I; 9. a first fastened piece; 10. a second fastened piece; 11. and a second common nut.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Example 1: referring to fig. 1-3, the locknut body 1 and the dished nut 5 are both provided with a threaded hole 2 matched with a bolt 7; the lower end surface of the locknut body 1 is provided with a limiting groove 3; the whole dish-shaped nut 5 is conical; the dish-shaped nut 5 is arranged in the limiting groove 3; the outer side of the disc-shaped nut 5 is polygonal; a plurality of dish-shaped nut outer telescopic grooves 4 are arranged on the polygon; a plurality of dish-shaped nut inner telescopic grooves 6 are arranged on the threaded hole of the dish-shaped nut 5; the inner telescopic groove and the outer telescopic groove of the disc-shaped nut 5 are arranged to facilitate the disc-shaped nut 5 to be stretched when being pressed tightly, so that the fastening and anti-loosening effects are enhanced;

referring to fig. 4, when in use, the bolt 7 penetrates through the second fastened piece 10 and the first fastened piece 9 and is fixed by the first common nut 8, and after the disc-shaped nut 5 is fastened to the first common nut 8, the locknut body 1 compresses the disc-shaped nut 5; under the dual functions of the locknut body 1 and the disc-shaped nut 5, the locknut is connected and fastened, the nut is difficult to loosen, and the performances of impact resistance, vibration resistance and variable load are strong.

Example 2: referring to fig. 5, the difference from embodiment 1 is that the bolt 7 is directly fixed by the disc nut 5 after passing through the second fastened member 10 and the first fastened member 9, and then the disc nut 5 is pressed by the locknut body 1.

Example 3: referring to fig. 6, the difference from embodiment 1 is that the bolt 7 is directly fixed by the disc nut 5 after passing through the second fastened member 10 and the first fastened member 9, and then the disc nut 5 is pressed by the ordinary screw thread with washer 11.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A threaded connection device with a locking function is characterized by comprising a locking nut body, a disc-shaped nut and a bolt; the locknut body and the disc-shaped nut are provided with threaded holes matched with the bolts; one end surface of the locknut body is provided with a limit groove; the outer side of the dish-shaped nut is polygonal; a plurality of outer telescopic grooves of the disc-shaped nut are arranged on the outer side of the disc-shaped nut; the threaded hole of the dished nut is provided with a plurality of inner telescopic grooves of the dished nut.

2. The threaded connection device with the anti-loosening function as claimed in claim 1, wherein a limit groove matched with the disc nut is formed at one end of the anti-loosening nut body.

3. A threaded connection with anti-loosening function as defined in claim 1, wherein the dished nut is generally conical.

4. A threaded connection device with a lock-out function according to claim 1, 2 or 3, wherein the dished nut is disposed in a retaining groove of the lock-out nut body.