Lock nut

Abstract

The utility model discloses a locknut, relates to nut technical field, the locknut comprises a nut body, the nut body comprises a nut portion and a flange portion fixed at the nut lower end, the outer wall of the nut portion is circumferentially provided with grooves, and the grooves are distributed at the halving position of the nut portion height. Due to the fact that the groove is formed in the nut body, when the nut body and the screw rod are assembled and connected in the horizontal direction or at the inclined angle, the screw rod is stressed to deform under the action of external force when the screw rod and the nut body are assembled, and therefore a small amount of deformation is generated at the inner threads of the extruded nut part. The groove is a weak position, so that slight deformation of the nut part is facilitated, the interaction pressure between the internal thread of the nut part and the screw rod is increased due to the deformation, the possibility of relative movement is reduced, the anti-loosening effect is achieved under the condition that the screw rod assembly is not influenced, the anti-loosening design of the nut body increases the applicable universality, and the service life of the nut body is prolonged. And a real anti-loosening effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut technical field, concretely is a lock nut. BACKGROUND

[0002] The lock nut stopper directly limits the relative rotation of the lock nut pair in the market at present, such as adopting the toothed pin, the series steel wire and the stop washer etc.

[0003] In actual use, when the nut and the screw rod are assembled and connected in the horizontal direction or the inclined angle, considering the weight of the mounting part, the nut and the screw rod bear large load after being connected, and the screw rod is difficult to ensure to be completely straight after being stressed, so that it is also difficult to completely ensure that the nut and the screw rod have consistent concentricity after being installed. SUMMARY

[0004] In view of the defects of the prior art, the utility model aims at providing a lock nut, which solves the problem that the lock nut stopper has no pre-tightening force and the lock nut cannot achieve the purpose of preventing loosening.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a lock nut, comprising a nut body, the nut body comprises a nut part and a flange part fixed at the lower end of the nut part, the outer wall of the nut part is provided with a groove in the circumferential direction, and the grooves are distributed at the two equal division positions of the height of the nut part.

[0006] Preferably, the surface of the nut body is provided with an electrophoretic coating.

[0007] Preferably, the groove is a ring-shaped groove or an oval groove distributed at equal intervals, and the short axis of the oval groove is distributed along the height direction of the nut part.

[0008] Preferably, the flange part is a polygonal flange, and the oval grooves arranged at equal intervals in the circumferential direction of the nut part correspond to the length direction of the side of the flange part.

[0009] The utility model has the following beneficial effects:

[0010] The utility model discloses a recess is arranged on the nut body, when the nut body and screw rod assemble and connect in the horizontal direction or the angle of inclination, under the external force of screw rod and nut body assembly, the stress of screw rod is deformed, thereby the internal thread of the nut part that is extruded produces a little deformation, and the recess is the weak position and is favorable to the slight deformation of the nut part, and the deformation makes the internal thread of the nut part and the existing interaction pressure of screw rod increase, reduces the possibility of relative movement, and reaches the anti-loose effect under the condition of not affecting screw rod assembly, and the anti-loose design of nut body increases the universality of application, and the true anti-loose effect is achieved, and the process is simple, and production is more efficient, and does not need external processing technology such as increasing the stop washer and toothed pin, and the applicability is more extensive compared with other products. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the front view of the annular groove of the utility model;

[0012] Fig. 2 It is the front view of the oval groove of the utility model;

[0013] Fig. 3 It is the perspective view of the oval groove of the utility model.

[0014] In the drawing: 1, nut body;11, nut part;111, recess;12, flange part. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0016] As Figs. 1-3 The utility model provides a kind of technical scheme: a kind of locknut, including nut body 1, nut body 1 surface is equipped with electrophoretic coating, reach the purpose of rust and high temperature resistance, nut body 1 includes nut part 11 and the flange part 12 fixed in the lower end of nut part 11, the outer wall of nut part 11 is equipped with recess 111 peripherally, and recess 111 is distributed at the position of two equal parts of nut part 11 height, recess 111 is a ring-shaped groove or oval groove of equidistant distribution, not limited to this;

[0017] When recess 111 is oval groove, the short axis of oval groove is distributed along the height direction of nut part 11, and the flange part 12 is polygonal flange, and the oval groove of nut part 11 peripherally equidistantly arranged corresponds the length direction of the side of flange part 12;

[0018] By setting the groove 111 on the nut body 1, when the screw rod and the nut body 1 are assembled in the horizontal direction or the inclined angle case connection mounting piece, under the action of external force when the screw rod and the nut body 1 are assembled, the screw rod is difficult to be completely straight under the action of external force of the mounting piece, a small amount of deformation is generated at the internal thread of the nut part 11 under the extrusion of the screw rod, the groove 111 is a weak part which is beneficial to the slight deformation of the nut part 11, the interaction pressure between the internal thread of the nut part 11 and the screw rod is increased by the deformation, the possibility of relative movement is reduced, and the anti-loose effect is achieved without affecting the assembly of the screw rod.

[0019] It should be noted that in this document, such as the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0020] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A lock nut, characterized by: The nut body (1) comprises a nut part (11) and a flange part (12) fixed at the lower end of the nut part (11), the outer wall of the nut part (11) is provided with a groove (111) in the circumferential direction, and the groove (111) is distributed at the bisection position of the height of the nut part (11).

2. A check nut according to claim 1, wherein: The surface of the nut body (1) is provided with an electrophoretic coating.

3. A lock nut according to claim 1 wherein: The groove (111) is a ring-shaped groove or an elliptical groove distributed at equal intervals, and the minor axis of the elliptical groove is distributed along the height direction of the nut part (11).

4. A lock nut according to claim 3 wherein: The flange part (12) is a polygonal flange, and the elliptical groove of the nut part (11) distributed at equal intervals in the circumferential direction corresponds to the length direction of the side of the flange part (12).

Images