CN207005060U - A kind of Anti-theft locknut - Google Patents

Abstract

An anti-theft and anti-loosening nut is used to effectively improve the anti-theft and anti-loosening performance of the nut, and improve the anti-loosening and anti-vibration capabilities of bolted joints. It includes a body with a vertical threaded through hole. The outer wall of the body is vertically divided into a pulling section and a cylindrical section. On the pulling section, 12 teeth of the same size and isosceles triangles are continuously distributed in the circumferential direction. The cylindrical section is provided with There is at least one transverse cutting groove, and the transverse cutting groove transversely penetrates one side wall of the cylindrical section and enters the vertical threaded through hole to a certain depth.

Description

A kind of anti-theft anti-loosening nut

technical field

The utility model relates to a fastener, in particular to an anti-theft anti-loosening nut.

Background technique

Bolts and nuts are commonly used fasteners. When used to fix steel structures on railway bridges and buildings, in order to prevent unauthorized personnel from disassembling the nuts, it is often necessary to improve the ordinary hexagonal nuts so that they have certain anti-theft performance. Non-professionals cannot use ordinary tools to easily remove the anti-theft nut, thereby preventing accidental damage to the facility. In addition, some applications also require the nut to have a certain anti-loosening performance, which increases the difficulty of removing the nut from the bolt, or prevents the nut from being accidentally lost.

Utility model content

The technical problem to be solved by the utility model is to provide an anti-theft and anti-loosening nut, so as to effectively improve the anti-theft and anti-loosening performance of the nut, and improve the anti-loosening and anti-vibration ability of the bolted joint.

The technical solution adopted by the utility model to solve its technical problems is as follows:

An anti-theft and anti-loosening nut of the present utility model includes a body with a vertical threaded through hole, and is characterized in that: the outer wall of the body is vertically divided into a pull section and a cylindrical section, and the ring direction of the pull section is continuously distributed 12 The same size and isosceles triangular tooth extraction, at least one transverse cutting groove is arranged on the cylinder section, and the transverse cutting groove penetrates the side wall of one side of the cylinder section transversely and enters the vertical threaded through hole to a certain depth.

The beneficial effect of the utility model is that there are only very short parallel opposite sides on the outer wall of the pulling section, and its length is only about 1/3 of that of a common hexagon nut. The role of anti-theft; after longitudinal compression, the cylindrical section is deformed, the pitch of the transverse cutting groove is reduced, and the thread at this place will be clamped on the bolt, so that the nut cannot be loosened by hand or small torque, so as to prevent it from falling off Function, improve the anti-loosening and anti-vibration ability of bolted joints.

Description of drawings

This manual includes the following drawings:

Fig. 1 is the front view of a kind of anti-theft anti-loosening nut of the utility model;

Fig. 2 is a top view of an anti-theft anti-loosening nut of the utility model;

Fig. 3 is a perspective view of an anti-theft anti-loosening nut of the present invention;

Components and corresponding marks are shown in the figure: pulling section 10 , isosceles triangular tooth pulling 11 , cylindrical section 20 , and transverse cutting groove 21 .

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1, a kind of anti-theft anti-loosening nut of the present utility model comprises the body that has vertical threaded through hole, and the outer wall of described body is vertically divided into pulling section 10 and cylinder section 20, and pulling section 10 is circumferentially 12 teeth 11 of the same size and isosceles triangle are continuously distributed. There are only very short parallel opposite sides on the outer wall of the pulling section 10, and its length is only about 1/3 of that of ordinary hexagonal nuts. Unscrewing it can play a certain role in anti-theft. The cylindrical section 20 is provided with at least one transverse cutting groove 21, and the transverse cutting groove 21 transversely penetrates one side wall of the cylindrical section 20 and enters the vertical threaded through hole to a certain depth. Before longitudinal compression, the pitch of the nut is exactly the same as that of ordinary bolts, and the nut can be freely rotated to the matching bolt by hand or with a small torque. After longitudinal compression, the pitch of the transverse cutting groove 21 decreases. Smaller than the pitch of ordinary bolts, when the nut is installed, the thread at the slot will be clamped on the bolt, so that the nut cannot be loosened by hand or with a small torque, thus preventing it from falling off.

Referring to FIG. 1 , there are usually two transverse grooves 21 , and their opening directions are opposite. The depth of the transverse groove 21 is generally 2/3 of the diameter of the cylindrical section 20 .

The above is just to illustrate some principles of a kind of anti-theft and anti-loosening nut of the present invention, not to limit the present invention to the specific structure and scope of application shown and described, so all possible corresponding Amendments and equivalents all belong to the patent scope of the utility model application.

Claims (3)

1. An anti-theft anti-loosening nut, comprising a body with a vertical threaded through hole, characterized in that: the outer wall of the body is vertically divided into a pulling section (10) and a cylindrical section (20), and the pulling section (10) 12 teeth (11) of the same size and isosceles triangles are continuously distributed in the upper circumferential direction, and at least one transverse cutting groove (21) is arranged on the cylindrical section (20), and the transverse cutting groove (21) transversely penetrates the cylindrical section (20 ) side wall and enter a certain depth into the vertical threaded through hole. 2. The anti-theft and anti-loosening nut according to claim 1, characterized in that: the number of said transverse cut grooves (21) is two, and the opening directions thereof are opposite. 3. The anti-theft and anti-loosening nut according to claim 1 or 2, characterized in that: the depth of the cutting groove (21) is 2/3 of the diameter of the cylindrical section (20).