CN217301224U

CN217301224U - Self-locking nut

Info

Publication number: CN217301224U
Application number: CN202220812179.0U
Authority: CN
Inventors: 李帆; 李朋根; 吴继军; 涂胜; 赵建翔
Original assignee: Yantai Aidi Aichuang Robot Technology Co ltd
Current assignee: Yantai Aidi Aichuang Robot Technology Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-26
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to a fastener specifically is a self-locking nut, including the nut body of steel, its characterized in that: the upper end of nut body upwards extends and forms the bulge loop, and the inner wall of bulge loop forms the annular channel, and the annular channel is embedded to establish the annular steel elastic locking plate, and elastic locking plate includes one section from the outside extension of inner chamber, than the thin section that contracts of other positions narrowly. Compared with the prior art, the utility model discloses repeatedly the dismantlement is used, compact structure, but continuous adjustment locking moment of torsion, the reliability is high.

Description

Self-locking nut

Technical Field

The utility model relates to a fastener specifically is a self-locking nut.

Background

Common thread locking anti-loosening methods include anti-loosening washers and nylon locknuts. The principle of the nylon locking nut is that locking is achieved by deforming the locking mechanism, but the nylon locking nut can only be installed and used once, and the nylon insert is permanently deformed after being detached and cannot be repeatedly detached for many times. The locking principle of the anti-loosening gasket is that the nut compresses the anti-loosening gasket to enable the anti-loosening gasket to generate elastic deformation, and the nut is locked by means of friction between the elastic gasket and the nut. The locking nut can only be used in a scene with a large locking force, and the friction force between the elastic gasket and the nut is insufficient in a scene with a small locking force, so that the locking reliability is poor.

SUMMERY OF THE UTILITY MODEL

For overcoming the defects of the prior art, the utility model discloses a self-locking nut, the technical scheme who takes is:

the utility model provides a self-locking nut, includes the nut body of steel, its characterized in that: the upper end of nut body upwards extends and forms the bulge loop, and the inner wall of bulge loop forms the annular channel, and the annular channel is embedded to establish the annular steel elastic locking plate, and elastic locking plate includes one section from the outside extension of inner chamber, than the thin section that contracts of other positions narrowly.

Further preferably, the thickness of the elastic locking piece is smaller than the distance between the internal threads of the nut body.

Further preferably, the inner diameter of the elastic locking piece is equal to the inner diameter of the internal thread of the nut body.

Further preferably, the two ends of the narrowing section and the center of the narrowing section form a central angle of 40-70 degrees.

The nut body is in a circular ring shape integrally, and a plurality of axial grooves are uniformly formed in the circumferential outer circular surface along the axial direction.

Compared with the prior art, the utility model discloses repeatedly the dismantlement is used, compact structure, but continuous adjustment locking moment of torsion, the reliability is high.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic structural view of the nut body according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of the elastic locking plate according to embodiment 1 of the present invention.

Detailed Description

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

Embodiment 1, a self-locking nut, including the nut body 1 of steel, the upper end of nut body 1 upwards extends and forms bulge loop 11, and the inner wall of bulge loop 11 forms annular groove 12, and annular ring's the embedded annular steel elastic locking plate 2 of establishing of annular groove 12, elastic locking plate 2 include one section from the outside extension of inner chamber, than the thin section 21 that contracts of other positions narrowly. The thickness of the elastic locking piece 2 is smaller than the distance between the internal threads of the nut body 1. The inner diameter of the elastic locking piece 2 is equal to the inner diameter of the internal thread of the nut body 1. The two ends of the narrowing section 21 form a central angle a of 60 degrees with the center thereof. The whole nut body 1 is in a ring shape, and 4 axial grooves 13 are uniformly formed in the circumferential outer circular surface along the axial direction, so that the nut body is convenient to disassemble.

When the nut is arranged on the external thread, the elastic locking plate is forced to be screwed into the external thread groove due to the torsion, so that the elastic locking plate generates spiral line deformation, the torsion generated by the deformation of the elastic locking plate embraces the external thread in the form of friction force, and the locking effect is generated. When the elastic locking plate is disassembled, the elastic locking plate can restore elastic deformation, and can be repeatedly used for many times.

Embodiment 2, the nut body inner chamber has the screw thread, and the nut body upper end upwards extends and forms bulge loop 11, and the internal diameter of bulge loop 11 is the same with the external diameter of elastic locking plate 2, and elastic locking plate 2 is packed into from the upper end of bulge loop 11, adorns the nut body card on rotatory main shaft, and the upper end of bulge loop 11 is inwards turned over through the spinning technology and is rolled up, makes elastic locking plate firmly fix on the nut body.

Claims

1. The utility model provides a self-locking nut, includes nut body (1) of steel, its characterized in that: the upper end of nut body (1) upwards extends and forms bulge loop (11), and the inner wall of bulge loop (11) forms ring channel (12), and ring channel (12) are embedded establishes annular steel's elastic locking plate (2), and elastic locking plate (2) include one section from the outside extension of inner chamber, than narrow thin section (21) that contracts of other positions.

2. A self-locking nut as defined in claim 1, wherein: the thickness of the elastic locking piece (2) is smaller than the distance between the internal threads of the nut body (1).

3. A self-locking nut as defined in claim 1, wherein: the inner diameter of the elastic locking piece (2) is equal to the inner diameter of the internal thread of the nut body (1).

4. A self-locking nut as defined in claim 1, wherein: the central angle (a) formed by the two ends of the fine reduction section (21) and the circle center thereof is 40-70 degrees.

5. A self-locking nut as defined in claim 1, wherein: the nut body (1) is integrally annular, and a plurality of axial grooves (13) are uniformly formed in the circumferential outer circular surface along the axial direction.