Pressure point variable tooth type locknut

Abstract

A pressure point variable tooth type locknut belongs to the technical field of fasteners, and is characterized in that a pressure point recessed in an end face is arranged on the end face of one end of a nut body, and the pressure point extrudes an adjacent internal thread inwards to form an internal thread with an inward bending shape; the number of the pressing points is two or more, and the pressing points are evenly distributed on the end face of one end of the nut. The depth of the pressing point is 2-4 internal thread pitches; the anti-loosening nut has the advantages that the pressing point is arranged on the end face of one end of the nut, and the pressing point extrudes the internal thread into an inward bending shape, so that when the nut is tightened, the inward bending internal thread can additionally clamp a screw rod, the nut cannot be loosened, and the technical effect of effective anti-loosening is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a pressure point variable thread type anti-loosening nut. Background Art

[0002] Nuts and screws are common fasteners in the machining industry. However, in a long-term vibration environment, ordinary nuts will loosen, resulting in a decrease in the fastening effect. Therefore, it is necessary to improve the nuts to enhance their anti-seismic performance.

[0003] There are various anti-loosening nuts on the existing market, but they all have complex structures, which are not only inconvenient to produce but also inconvenient to operate and install. For example, the patent CN2021107583862 provides an anti-loosening nut, including: a nut body, a limiting pin and a spherical body; the nut body is formed with a threaded hole, and is formed with an axial through hole and a radial through hole arranged orthogonally, the axial through hole is used to install the limiting pin, and the radial through hole is connected to the threaded hole for installing the spherical body; the diameter of the radial through hole is larger than the diameter of the spherical body, the diameter of the spherical body is larger than the maximum diameter of the limiting pin, and is larger than the distance from the inner side of the radial through hole to the bottom of the thread groove in the threaded hole; the diameter of the axial through hole is the same as the maximum diameter of the limiting pin; when the limiting pin is pressed into the first position in the axial through hole, tightening between the screw and the nut body is achieved; when the limiting pin is pressed into the second position of the axial through hole, the extrusion of the screw is released.

[0004] Although this nut has an anti-loosening effect, its structure is very complicated, which not only has high production costs but also is inconvenient to operate and is not suitable for practical applications. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a nut with a simple structure, easy production and easy operation, and having an anti-loosening effect, in which a pressure point is set on the end face to squeeze the internal thread.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is a pressure point variable tooth anti-loosening nut, including a nut body, and a pressure point recessed in the end face is provided on one end face of the nut body, and the pressure point squeezes the adjacent internal thread inward into an internal thread with an inward curved shape.

[0007] There are two or more pressure points, which are evenly distributed on one end surface of the nut.

[0008] Preferably, there are four pressure points.

[0009] The depth of the pressure point is 2-4 internal thread pitches.

[0010] Preferably, the depth of the pressure point is three internal thread pitches.

[0011] The beneficial effect of the utility model is that a pressure point is set on the end face of one end of the nut, and the pressure point squeezes the internal thread into an inward curved shape. In this way, when tightening, the internal thread with the inward curved shape will additionally clamp the screw, making it impossible for the nut to loosen, thereby achieving an effective anti-loosening technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the pressure-point variable-thread anti-loosening nut of the utility model.

[0013] In the figure: 1. Nut body, 2. End face, 3. Pressure point, 4. Internal thread, 5. Internal thread with an inwardly curved shape. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the embodiments.

[0015] like Figure 1 As shown, a pressure point variable thread anti-loosening nut is made, that is, a pressure point is made on the end face 2 of the nut body 1 of the existing ordinary nut, and the pressure point 3 is made into a blind hole recessed in the end face, and at the same time, the pressure point 3 squeezes the adjacent internal thread 4 inwardly into an internal thread 5 with an inwardly curved shape; generally, two or more pressure points 3 are set, and are evenly distributed on the end face 2 of the nut; in this embodiment, the pressure points 3 are set to four; generally, the depth of the pressure points 3 is set to 2-4 internal thread pitches; in this embodiment, the depth of the pressure points 3 is made to be 3 internal thread pitches.

[0016] When in use, the end face of the nut without the pressure point 3 faces inward, and the end face 2 with the pressure point 3 faces outward, and the nut is screwed into the screw. Since the pressure point 3 is provided on one end face 2 of the nut, and the pressure point 3 squeezes the internal thread 4 into an inward curved shape, when tightening, the internal thread 5 with the inward curved shape will additionally clamp the external thread on the screw, making it impossible for the nut to loosen, thereby achieving an effective anti-loosening technical effect.

Claims

1. A pressure point variable thread anti-loosening nut, comprising a nut body (1), characterized in that A pressure point (3) recessed in the end surface (2) is provided on one end surface (2) of the nut body (1), and the pressure point (3) presses the adjacent internal thread (4) inwardly into an internal thread (5) having an inwardly curved shape.

2. The pressure point variable thread lock nut according to claim 1, characterized in that The pressure points (3) are two or more and are evenly distributed on one end surface (2) of the nut.

3. The pressure point variable thread lock nut according to claim 2, characterized in that There are four pressure points (3).

4. The pressure point variable thread lock nut according to claim 3, characterized in that The depth of the pressure point (3) is 2-4 internal thread pitches.

5. The pressure point variable thread lock nut according to claim 4, characterized in that The depth of the pressure point (3) is three internal thread pitches.

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