CN211667027U

CN211667027U - Anti-loose nut

Info

Publication number: CN211667027U
Application number: CN201921766163.5U
Authority: CN
Inventors: 袁伟芳
Original assignee: Pinghu Shengtai Hardware Products Co ltd
Current assignee: Pinghu Shengtai Hardware Products Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-10-13
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses a locknut, include: the nut comprises a nut body, wherein the nut body is a hexagonal nut, a friction surface for increasing the friction force between the nut body and a contact surface is arranged on the end surface of the nut body, a slot is formed in one side surface of the nut body, and a rotating shaft is fixedly arranged between the upper end surface and the lower end surface of the slot; anti-loosening buckle, anti-loosening buckle includes clamping part and handle, be equipped with the mounting hole on the clamping part, the rotation axis passes the mounting hole to make anti-loosening buckle rotate and install in the fluting, anti-loosening buckle forward rotation and bolt separation, reverse rotation contradict with the bolt. The utility model discloses a set up anti-loosening and detain and increase and prevent that the nut is not hard up with nut surface contact's friction surface, under the condition of frequent vibration, also can be locking effectively.

Description

Anti-loose nut

Technical Field

The utility model belongs to the technical field of the fastener, especially, relate to a locknut.

Background

Nuts are usually fastening parts screwed together with bolts or screws for fastening. When a common hexagon nut and a bolt or a screw are used for locking a part in a matching way, the following methods are generally adopted in order to prevent the nut from loosening: firstly, sleeving a flat washer or a spring washer on a bolt, then screwing a nut on the bolt through a wrench, and increasing the friction force between the nut and the matched threads of the bolt or the screw rod by means of the flat washer or the spring washer so as to prevent the nut from loosening; double nuts are used for preventing looseness, and a left-handed nut and a right-handed nut are matched to tighten and prevent looseness; and smearing the nut anti-loosening liquid on the screwing position of the bolt or the screw, and screwing the nut. However, under the use condition of frequent vibration, the effect of loosening prevention by the method is not ideal in the practical application process, and the nut can often loosen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locknut has solved the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model adopts the following technical scheme: a locknut, comprising:

the nut comprises a nut body, wherein the nut body is a hexagonal nut, a friction surface for increasing the friction force between the nut body and a contact surface is arranged on the end surface of the nut body, a slot is formed in one side surface of the nut body, and a rotating shaft is fixedly arranged between the upper end surface and the lower end surface of the slot;

anti-loosening buckle, anti-loosening buckle includes clamping part and handle, be equipped with the mounting hole on the clamping part, the rotation axis passes the mounting hole to make anti-loosening buckle rotate and install in the fluting, anti-loosening buckle forward rotation and bolt separation, reverse rotation contradict with the bolt.

Furthermore, the upper end face and the lower end face of the nut body are respectively provided with a friction surface, the friction surfaces are of a sawtooth structure, the width and the depth of the sawteeth are gradually reduced to zero from outside to inside, and the sawteeth are uniformly distributed on the circumference.

Furthermore, the outer side of the joint of the clamping part and the handle is smooth and excessive.

Furthermore, the surface of the clamping part, which is abutted against the bolt, is provided with a tip.

Further, the clamping part and the handle are integrally formed.

The utility model discloses the beneficial effect who has does: the anti-loosening buckle is arranged on the side face of the nut body, when the nut is screwed with the bolt or the screw rod, the handle is rotated anticlockwise, the tip end of the clamping part is abutted against the bolt or the screw rod, relative rotation between the nut and the bolt or the screw rod is limited, and the anti-loosening effect is effectively achieved; the friction surface is arranged on the end face of the nut body, so that when the nut is screwed down, the friction force between the nut body and the contact surface is increased, the nut body is not easy to loosen, the purpose of preventing looseness is achieved, and the nut body can meet the requirements under the use condition of frequent vibration.

Drawings

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

Fig. 1 is a schematic structural view of the present invention in a loosened state.

Fig. 2 is a schematic view of another view of fig. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of the present invention in a locked state.

Fig. 5 is a schematic view of another view angle in fig. 4.

Fig. 6 is a partially enlarged view of fig. 5 at B.

Fig. 7 is a schematic structural view of the nut body of the present invention.

Fig. 8 is a partial enlarged view at C in fig. 7.

Fig. 9 is a schematic structural view of the anti-loosening buckle of the present invention.

The reference numbers are as follows:

the nut comprises a nut body 1, sawteeth 11, a slot 12 and a rotating shaft 13;

anti-loosening buckle 2, clamping part 21, handle 22, mounting hole 23 and tip 24.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 9, a locknut includes: the nut comprises a nut body 1, wherein the nut body 1 is a hexagonal nut, a friction surface for increasing friction force between the nut body 1 and a contact surface is arranged on the end surface of the nut body 1, a slot 12 is formed in one side surface of the nut body 1, and a rotating shaft 13 is fixedly arranged between the upper end surface and the lower end surface of the slot 12;

anti-loosening buckle 2, anti-loosening buckle 2 includes clamping part 21 and handle 22, be equipped with mounting hole 23 on the clamping part 21, rotation axis 13 passes mounting hole 23 to make anti-loosening buckle 2 rotate and install in fluting 12, anti-loosening buckle 2 forward rotation and bolt separation, the antiport is contradicted with the bolt. Through the side installation at the nut body anti-loosening, when the nut was screwed up with bolt or screw rod, anticlockwise rotation handle, the most advanced of clamping part will contradict each other with bolt or screw rod, restriction nut and bolt or screw rod between relative rotation, played locking effect effectively.

When the nut is installed, the rotating shaft firstly penetrates through the installation hole and then is welded to a fixed position in the groove of the nut body.

As shown in fig. 7 and 8, friction surfaces are arranged on both the upper end surface and the lower end surface of the nut body 1, the friction surfaces are of a sawtooth 11 structure, and the width and the depth of the sawtooth 11 are gradually reduced to zero from outside to inside. The design can lead the outer ring of the nut to have a sawtooth structure, but the inner ring is not affected, when the nut is screwed down, the inner ring does not have sawteeth, the outer thread of a screw rod or a bolt contacted with the inner ring is not damaged, and simultaneously, the nut is also convenient to screw down. The sawteeth 11 are uniformly distributed on the circumference, and the circumference is a regular hexagonal circumscribed circle. The friction surface is arranged on the end face of the nut body, so that when the nut is screwed down, the friction force between the nut body and the contact surface is increased, the nut body is not easy to loosen, and the purpose of looseness prevention is achieved.

As shown in fig. 9, the outer side of the junction of the gripping part 21 and the handle 22 is rounded, thus increasing the maximum angle of rotation of the entire check button in the slot about the rotation axis.

The surface of the clamping part 21 abutting against the bolt is provided with a tip 24. The tip 24 facilitates interference with the external threads of the bolt or screw to limit loosening.

The clamping part 21 and the handle 22 are integrally formed, so that the clamping part and the handle are not required to be assembled, and an assembling process is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locknut, comprising:

the nut comprises a nut body (1), wherein the nut body (1) is a hexagonal nut, a friction surface for increasing the friction force between the nut body (1) and a contact surface is arranged on the end surface of the nut body, a notch (12) is formed in one side surface of the nut body (1), and a rotating shaft (13) is fixedly arranged between the upper end surface and the lower end surface of the notch (12);

prevent that the pine is detained (2), prevent that the pine is detained (2) and include clamping part (21) and handle (22), be equipped with mounting hole (23) on clamping part (21), mounting hole (23) are passed in rotation axis (13) to make prevent that the pine is detained (2) and rotate and install in fluting (12), prevent that the pine is detained (2) forward rotation and bolt separation, reverse rotation and bolt conflict.

2. A locknut as claimed in claim 1, wherein: the nut body (1) upper and lower two terminal surfaces all are equipped with the friction surface, the friction surface adopts sawtooth (11) structure, the width and the degree of depth outside-in of sawtooth (11) reduce to zero gradually, sawtooth (11) evenly distributed on the circumference.

3. A locknut as claimed in claim 1, wherein: the outer side of the joint of the clamping part (21) and the handle (22) is smooth and excessive.

4. A locknut as claimed in claim 1, wherein: and a tip (24) is arranged on the surface of the clamping part (21) abutting against the bolt.

5. A locknut as claimed in claim 1, wherein: the clamping part (21) and the handle (22) are integrally formed.