CN211370971U

CN211370971U - Wedge locknut

Info

Publication number: CN211370971U
Application number: CN201921916988.0U
Authority: CN
Inventors: 张永安
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-08-28
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a wedge lock nut, include the main nut with screw rod meshing, vice nut, the screw rod comprises bolt head and lead screw, main nut and vice nut all mesh with the lead screw, open one side of main nut upper thread hole A has the round cavity, one side of vice nut is equipped with the fastener, the fastener forms extrusion fit with the round cavity, the fastener is cyclic annular and vice nut side fixed connection. The utility model discloses do not change the structure of original screw rod, change and increase an auxiliary nut to original nut, form interference fit through the fastener and cause the effect of extrusion micro-deformation, let the meshing between main nut, auxiliary nut and the screw rod more firm, simple structure to form regularity is high, is favorable to the industrialization to process batch manufacturing and application.

Description

Wedge locknut

Technical Field

The utility model relates to a fastener technical field specifically is a wedge lock nut.

Background

The screw and the nut are connected through threads to connect the components together, which is a common fastener structure. The screw rod and the nut are widely applied to various industries due to the advantages of convenient manufacture, low cost, convenient and quick installation and the like, but the screw rod and the nut are connected by adopting the principle of thread engagement, and can be loosened under certain conditions. Some anti-loosening screws on the market have complex structure, high manufacturing cost, troublesome use and poor effect. To this end, we propose a wedge locknut.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wedge lock nut to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wedge locknut, includes main nut, the vice nut with screw rod meshing, the screw rod comprises bolt head and lead screw, main nut and vice nut all mesh with the lead screw, open one side of main nut upper thread hole A has the circle chamber, one side of vice nut is equipped with the fastener, the fastener forms extrusion fit with the circle chamber.

Preferably, the clamping piece is in an annular shape and is fixedly connected with the side surface of the auxiliary nut.

Preferably, one end of the clamping piece, which is far away from the secondary nut, is provided with a wedge piece, the distance from the outer diameter of the tip end of the wedge piece to the axial lead of the secondary nut is smaller than the distance from the inner diameter of the circular cavity to the axial lead of the main nut, and the distance from the maximum outer diameter of the wedge piece to the axial lead of the secondary nut is larger than the distance from the inner diameter of the circular cavity to the axial lead of the main nut.

Preferably, the inner side surface of the clamping piece is flush with the edge of a screw hole B of the auxiliary nut, and is provided with screw teeth meshed with the screw rod.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses do not set up too much spare part, the structure of original screw rod is unchangeable, only carry out structural change and increase an auxiliary nut to the nut, be equipped with on auxiliary nut with main nut on the round chamber form extrusion fit's fastener, form interference fit through the fastener and cause the effect of extrusion micro-deformation, let main nut, the meshing between auxiliary nut and the screw rod more firm, the simple structure of this application to form rule degree is high, is favorable to the industrialization to process manufacturing in batches and uses.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

FIG. 3 is a diagram illustrating the usage of the present invention;

fig. 4 is a sectional view of the utility model in use.

In the figure: 1. the screw rod 101, the bolt head 102, the screw rod 2, the main nut 201, the screw holes A and 202, the round cavity 3, the auxiliary nut 301, the screw holes B and 4 and the clamping piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a wedge locknut, includes the main nut 2 with screw rod 1 meshing, vice nut 3, screw rod 1 comprises bolt head 101 and lead screw 102, main nut 2 and vice nut 3 all mesh with lead screw 102, open one side of screw hole A201 on main nut 2 has round chamber 202, one side of vice nut 3 is equipped with fastener 4, fastener 4 forms extrusion fit with round chamber 202, and fastener 4 lets main nut 2 take place slight deformation under the extrusion (the axis of main nut 2 and the axis of lead screw 102 are because the one-way extrusion of fastener 4 takes place to skew to realize further chucking), thereby make it inseparabler with screw rod 1's meshing, difficult pine takes off, and its effect is as shown in figure 4.

Particularly, the clamping piece 4 is in an annular shape and is fixedly connected with the side surface of the auxiliary nut 3, so that the clamping piece 4 is matched with the circular cavity 202 in shape.

Particularly, in order to make the process of the clamping piece 4 and the round cavity 202 in the extrusion fit smoother, one end of the clamping piece 4, which is far away from the auxiliary nut 3, is a wedge piece, the distance from the tip outer diameter of the wedge piece to the axial lead of the auxiliary nut 3 is smaller than the distance from the inner diameter of the round cavity 202 to the axial lead of the main nut 2, and the distance from the maximum outer diameter of the wedge piece to the axial lead of the auxiliary nut 3 is larger than the distance from the inner diameter of the round cavity 202 to the axial lead of the main nut 2, namely, the thinnest part of the clamping piece 4 is smaller than the size of the round cavity 202, and the thickest part is larger than the size of the round cavity 202, so that the clamping piece 4 can naturally enter the round cavity 202 of the main nut 2 when the auxiliary nut 3 rotates on the screw rod.

Particularly, in order to improve the anti-loosening effect, the inner side surface of the clamping piece 4 is flush with the edge of the screw hole B301 of the auxiliary nut 3, and the screw thread meshed with the screw rod 102 is formed, so that the screw rod 102 can be meshed with the inner side surface of the clamping piece 4, the reaction force of the clamping piece 4 for extruding the circular cavity 202 enables the clamping piece 4 to be larger in meshing force between the clamping piece 4 and the screw rod 1 in an extruding deformation mode, and the clamping piece is not easy to loosen.

The use process comprises the following steps: during the use, the screw rod 102 penetrates through parts to be fastened, then the main nut 2 is screwed on the screw rod 102 and screwed, then one surface, provided with the clamping piece 4, of the auxiliary nut 3 is installed towards the main nut 2, the auxiliary nut 3 is screwed towards the main nut 2 by using tools such as a wrench and the like, the clamping piece 4 is in extrusion fit with the circular cavity 202, the main nut 2 and the auxiliary nut 3 are tightly attached to the maximum screwing degree, the clamping piece 4 and the circular cavity 202 are mutually extruded, and thread teeth meshed with the screw rod 102 are deformed so as to achieve the purpose of preventing looseness.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wedge locknut which characterized in that: the screw rod (1) is composed of a bolt head (101) and a screw rod (102), the main nut (2) and the auxiliary nut (3) are meshed with the screw rod (102), a circular cavity (202) is formed in one side of a screw hole A (201) in the main nut (2), a clamping piece (4) is arranged on one side of the auxiliary nut (3), and the clamping piece (4) and the circular cavity (202) are in extrusion fit.

2. The wedge locknut of claim 1, wherein: the clamping piece (4) is in an annular shape and is fixedly connected with the side surface of the auxiliary nut (3).

3. The wedge locknut of claim 2, wherein: one end, far away from the auxiliary nut (3), of the clamping piece (4) is a wedge piece, the distance from the outer diameter of the tip end of the wedge piece to the axis of the auxiliary nut (3) is smaller than the distance from the inner diameter of the circular cavity (202) to the axis of the main nut (2), and the distance from the maximum outer diameter of the wedge piece to the axis of the auxiliary nut (3) is larger than the distance from the inner diameter of the circular cavity (202) to the axis of the main nut (2).

4. The wedge locknut of claim 3, wherein: the inner side surface of the clamping piece (4) is flush with the edge of a screw hole B (301) of the auxiliary nut (3), and is provided with screw teeth meshed with the screw rod (102).