CN213478900U

CN213478900U - Anti-loose nut

Info

Publication number: CN213478900U
Application number: CN202022592404.8U
Authority: CN
Inventors: 于杰
Original assignee: Shandong Jiufeng Power Technology Co ltd
Current assignee: Shandong Jiufeng Power Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-06-18
Anticipated expiration: 2030-11-11

Abstract

The utility model relates to a nut, specific locknut that says so, include first nut and be located the second nut of first nut right-hand member. A first internal thread is arranged inside the first nut, and a second internal thread which is the same as the first internal thread is arranged inside the second nut. The outer side of the right end of the first nut is provided with an external thread which is opposite to the rotating direction of the first internal thread, the left end of the second nut extends leftwards to form a clamping part, and a third internal thread matched with the external thread is arranged on the inner side of the clamping part. The left end of the first nut extends outwards to form a limiting boss, and the cross section of the limiting boss is in a regular hexagon shape. The utility model discloses simple structure, convenient to use has better locking effect.

Description

Anti-loose nut

Technical Field

The utility model relates to a nut, specific locknut that says so.

Background

In actual work, the screw and the nut are often utilized to fix more than two joint parts, however, when external forces such as vibration act, the threads are loosened, and through repeated action, the thread connection is loosened and fails, so that normal work is affected, and even accidents are caused.

Disclosure of Invention

To above technical problem, the utility model discloses a locknut, the utility model discloses simple structure, convenient to use has better locking effect.

The utility model relates to a lock nut, including first nut, include first nut and be located the second nut of first nut right-hand member. A first internal thread is arranged inside the first nut, and a second internal thread which is the same as the first internal thread is arranged inside the second nut. The outer side of the right end of the first nut is provided with an external thread opposite to the rotating direction of the first internal thread, the left end of the second nut extends leftwards to form a clamping part, and a third internal thread matched with the external thread is arranged on the inner side of the clamping part. The left end of the first nut extends outwards to form a limiting boss, and the cross section of the limiting boss is in a regular hexagon shape.

Furthermore, an elastic washer is arranged between the limiting boss and the second nut, the left end of the elastic washer abuts against the right end of the limiting boss, and the right end of the elastic washer abuts against the left end of the second nut.

Furthermore, a groove is formed in the right end of the limiting boss, the elastic gasket is located in the groove, and the left end of the elastic gasket abuts against the groove.

Furthermore, the limiting boss extends rightwards to form an anti-theft cover, and the anti-theft cover covers the second nut.

Furthermore, a gap is reserved between the inner side of the anti-theft cover and the outer side of the second nut.

The utility model has the advantages that: the utility model has simple structure, convenient use and better anti-loosening effect; the setting of theftproof cover can make the utility model discloses produce better theftproof effect.

Drawings

The invention will be further explained with reference to the accompanying drawings, which are simplified schematic drawings and which illustrate, by way of illustration only, the basic structure of the invention and do not constitute an undue limitation on the invention:

fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural view of a first nut according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a second nut according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second embodiment of the present invention;

in the figure: 1. the anti-theft cover comprises a first nut, 11, a limiting boss, 12, a first internal thread, 14, a groove, 15, an anti-theft cover, 2, a second nut, 21, a second internal thread, 22, a clamping part, 23, a third internal thread, 3 and a gap.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure, as the terms used are used to describe particular embodiments only, and are not intended to limit the exemplary embodiments based on the disclosure.

The first embodiment:

fig. 1-3 show that the utility model relates to a locknut, including first nut 1 and the second nut 2 that is located first nut 1 right-hand member. A first internal thread 12 is arranged inside the first nut 1, and a second internal thread 21 which is the same as the first internal thread 12 is arranged inside the second nut 2. The right end outer side of the first nut 1 is provided with an external thread (not shown in the figure) opposite to the screwing direction of the first internal thread 12, the left end of the second nut 2 extends leftwards to form a clamping part 22, and the inner side of the clamping part 22 is provided with a third internal thread 23 matched with the external thread. The left end of the first nut 1 extends outwards to form a limiting boss 11, and the cross section of the limiting boss 11 is in a regular hexagon shape.

An elastic washer (not shown in the figure) is arranged between the limiting boss 11 and the second nut 2, the left end of the elastic washer is abutted against the right end of the limiting boss 11, and the right end of the elastic washer is abutted against the left end of the second nut 2. The right end of the limiting boss 11 is provided with a groove 14, the elastic gasket is located in the groove 14, and the left end of the elastic gasket abuts against the groove 14.

The first nut 1 and the second nut 2 are tightly installed through the external thread and the third internal thread 23 in advance, then the first nut 1 and the second nut 2 are screwed on a stud needing to be fixed through the regular-hexagon limiting boss 11, and due to the fact that the rotating directions of the external thread and the first internal thread 12 are opposite, when the first nut 1 is screwed leftwards, the second nut 2 is screwed leftwards along with the first nut, and looseness cannot be generated between the second nut 2 and the first nut 1. When the first nut 1 is about to rotate to generate looseness due to the action of vibration and the like in the working process, the screwing force between the third internal thread 23 on the second nut 2 and the external thread on the first nut 1 is opposite to the direction in which the first nut 1 is about to rotate, and the first nut 1 is prevented from generating looseness due to actual rotation. The setting of spring washer can strengthen with the help of its elasticity the utility model discloses a locking effect. Set up the cross sectional shape of spacing boss 11 into regular hexagon, can conveniently will the utility model discloses twist on treating fixed double-screw bolt.

Second embodiment:

as shown in fig. 4, on the basis of the first embodiment, the limiting boss 11 extends rightwards to form an anti-theft cover 15, and the second nut 2 is covered by the anti-theft cover 15. When the limiting boss 11 and the anti-theft cover 15 are screwed, namely the first nut 1 is screwed, according to the analysis, the screwing force between the third internal thread 23 and the external thread is opposite to the screwing direction of the first nut 1 to be unscrewed, so that the first nut 1 can be effectively prevented from rotating towards the unscrewing direction. The anti-theft cover 15 covers the second nut 2, and the second nut 2 cannot be screwed, so that a good anti-theft effect is achieved.

The theftproof cover 15 inboard with leave clearance 3 between the 2 outsides of second nut, can prevent to make second nut 2 along with first nut 1 together produces the rotation because of the existence of frictional force between first nut 1 and the second nut 2, further strengthened the utility model discloses a theftproof, locking effect.

In the description of the present invention, "left" and "right" are the same as the left and right directions shown in the drawings themselves; the terms describing the orientation such as "inside" and "outside" are based on the positional relationship shown in the drawings, and the direction close to the central axis of the first nut 1 is "inside" and the direction away from the central axis of the first nut 1 is "outside". The above terminology is for the purpose of simplifying the description of the present invention only and is not to be construed as limiting the present invention.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a locknut, includes first nut, first nut inside is equipped with first internal thread, its characterized in that: still including being located the second nut of first nut right-hand member, second nut inside be equipped with the same second internal thread of first internal thread, first nut right-hand member outside be equipped with first internal thread revolves to opposite external screw thread, the left end of second nut extends left and forms the clamping part, the clamping part inboard be equipped with external screw thread assorted third internal thread, the first nut left end outwards extends and forms spacing boss, spacing boss cross sectional shape is regular hexagon.

2. The locknut of claim 1, wherein: an elastic washer is arranged between the limiting boss and the second nut, the left end of the elastic washer abuts against the right end of the limiting boss, and the right end of the elastic washer abuts against the left end of the second nut.

3. The locknut of claim 2, wherein: the right end of the limiting boss is provided with a groove, the elastic gasket is located in the groove, and the left end of the elastic gasket abuts against the groove.

4. A locknut according to any one of claims 1-3, wherein: the limiting boss extends rightwards to form an anti-theft cover, and the second nut is covered by the anti-theft cover.

5. The locknut of claim 4, wherein: and a gap is reserved between the inner side of the anti-theft cover and the outer side of the second nut.