CN209483794U

CN209483794U - A kind of self-locking anti-return nut component

Info

Publication number: CN209483794U
Application number: CN201822221346.0U
Authority: CN
Inventors: 余艇
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2019-10-11
Anticipated expiration: 2028-12-27

Abstract

The utility model discloses a kind of self-locking anti-return nut components, including the locking nut and anti-return nut with bolt threaded, feature is that axial one end of locking nut extends outwardly and is provided with tight lock part, anti-return nut is coated on tight lock part and cooperation pressed against, and the bottom end of tight lock part offers annular groove；Advantage is to offer annular groove in the bottom of the tight lock part of locking nut, preferably realizes the easily-deformable effect of tight lock part, keeps the contact surface between the first arc surface and the second arc surface bigger, and frictional force is bigger, has better retaining effect.

Description

A kind of self-locking anti-return nut component

Technical field

The utility model relates to a kind of self-locking anti-return nut components.

Background technique

The Chinese utility model patent of Patent No. 201521035383.2 disclose it is a kind of it is novel it is locking it is dust-proof from Split nut component, including it is self-locking main nut, self-locking from nuts and bolt, described self-locking main nut axial direction one end extends outward lock Tight end, forms more than one deformation slot in locking end, described self-locking to form transition big outside and small inside from one end of nut Section, the locking end protrude into changeover portion and the inner wall close-fitting with changeover portion；The utility model have it is simple in construction, easy to disassemble and assemble, Securely and reliably, loosening can be effectively prevented, prevent dust from entering, and may be reused repeatedly, the advantages of long service life； But this kind of structure retaining effect is bad, in the case of long-term use, nut is still easy the case where loosening.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of good self-locking anti-return nut components of retaining effect.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of self-locking anti-return nut component, packet The locking nut and anti-return nut with bolt threaded are included, axial one end of the locking nut, which extends outwardly, is provided with lock Tight portion, the anti-return nut is coated on the tight lock part and cooperation pressed against, the bottom end of the tight lock part are opened Equipped with annular groove.

The further preferred scheme of the utility model are as follows: the company of being provided between the tight lock part and the locking nut Socket part, the outer diameter of the interconnecting piece are less than the outer diameter of the tight lock part, the end face of the locking nut, the connection The bottom surface three of the side wall in portion and the tight lock part forms the annular groove.

The further preferred scheme of the utility model are as follows: the section of the annular groove is U-shaped.

The further preferred scheme of the utility model are as follows: the outer surface of the tight lock part is the first arc surface, described The outer diameter of tight lock part bottom is greater than the outer diameter at the top of the tight lock part.

The further preferred scheme of the utility model are as follows: be provided on the inner wall of the anti-return nut and described first Compatible second arc surface of arc surface, second arc surface and the first arc surface compression fit.

The further preferred scheme of the utility model are as follows: multiple equally distributed through slots are offered on the tight lock part.

The further preferred scheme of the utility model are as follows: the quantity of the through slot is 4.

Compared with prior art, the utility model has the advantage of the bottoms of the tight lock part in locking nut to offer annular Groove preferably realizes the easily-deformable effect of tight lock part, keeps the contact surface between the first arc surface and the second arc surface bigger, rub It is bigger to wipe power, there is better retaining effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the explosive view of Fig. 1；

Fig. 3 is the structural schematic diagram of anti-return nut in the utility model；

Fig. 4 is the cross-sectional view of Fig. 1.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

As shown, a kind of self-locking anti-return nut component, including the locking nut 2 and retaining spiral shell with 1 threaded of bolt Mother 3, axial one end of locking nut 2, which extends outwardly, is provided with tight lock part 21, anti-return nut 3 be coated on tight lock part 21 and and its Compression fit, the bottom end of tight lock part 21 offer annular groove 22, are provided with interconnecting piece between tight lock part 21 and locking nut 2 25, the outer diameter of interconnecting piece 25 is less than the outer diameter of tight lock part 21, the end face of locking nut 2, the side wall of interconnecting piece 25 and tight lock part 21 Bottom surface three form annular groove 22, the section of annular groove 22 is U-shaped, and the outer surface of tight lock part 21 is the first arc surface 23, the outer diameter of 21 bottom of tight lock part is greater than the outer diameter at the top of tight lock part 21, is provided on the inner wall of anti-return nut 3 and the first circle Compatible second arc surface 31 of cambered surface 23,23 compression fit of the second arc surface 31 and the first arc surface open up on tight lock part 21 There are multiple equally distributed through slots 24, the through slot 24 of different number can be opened up according to the actual situation.

Locking nut: being first spun on bolt by working principle, then anti-return nut is spun on bolt, at this time the second arc surface It is sticked on the first arc surface, persistently tightens anti-return nut, withstanding locking nut until the bottom end of anti-return nut cannot tighten again, In the process, the tight lock part on locking nut is squeezed, and the contact surface between the first arc surface and the second arc surface is very big, The frictional force of generation is also very big, to play the effect of better retaining.

A kind of self-locking anti-return nut component provided by the utility model is described in detail above, it is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help Understand the utility model and core concept.It should be pointed out that for those skilled in the art, not departing from this Under the premise of utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen Enter in the protection scope of the utility model claims.

Claims

1. a kind of self-locking anti-return nut component, including the locking nut and anti-return nut with bolt threaded, it is characterised in that: Axial one end of the locking nut, which extends outwardly, is provided with tight lock part, and the anti-return nut is coated on the tight lock part Cooperation upper and pressed against, the bottom end of the tight lock part offer annular groove.

2. a kind of self-locking anti-return nut component according to claim 1, it is characterised in that: the tight lock part and described Interconnecting piece is provided between locking nut, the outer diameter of the interconnecting piece is less than the outer diameter of the tight lock part, the locking The bottom surface three of the end face of nut, the side wall of the interconnecting piece and the tight lock part forms the annular groove.

3. a kind of self-locking anti-return nut component according to claim 2, it is characterised in that: the section of the annular groove It is U-shaped.

4. a kind of self-locking anti-return nut component according to claim 1, it is characterised in that: the outer surface of the tight lock part For the first arc surface, the outer diameter of the tight lock part bottom is greater than the outer diameter at the top of the tight lock part.

5. a kind of self-locking anti-return nut component according to claim 4, it is characterised in that: the inner wall of the anti-return nut On be provided with the second arc surface compatible with first arc surface, second arc surface and first circular arc Face pressure tight fit.

6. a kind of self-locking anti-return nut component according to claim 1, it is characterised in that: offered on the tight lock part Multiple equally distributed through slots.

7. a kind of self-locking anti-return nut component according to claim 6, it is characterised in that: the quantity of the through slot is 4 It is a.