Ball anti-loosening and anti-theft nut with good fastening effect

Abstract

The utility model discloses a ball anti-loose and anti-theft nut with good fastening effect, which relates to the technical field of nuts, and comprises a nut base body and a non-return piece, a first thread groove is arranged inside the nut base body, an arc-shaped non-return groove is arranged on the inner wall of the nut base body, the non-return piece is movably connected inside the arc-shaped non-return groove, and a second thread groove is arranged inside the non-return piece. The second thread groove in the arc-shaped non-return piece can be in threaded connection with the thread on the bolt, the problem that the thread on the nut is lost can be effectively avoided, in the screwing process of the bolt, the non-return piece extends towards the tail end of the inner wall of the arc-shaped non-return groove along with the thread on the bolt and abuts against the inner wall, screwing of the bolt cannot be affected, and the service life of the bolt is prolonged. When the nut needs to rotate reversely to be unscrewed, friction force between the non-return piece and the bolt can drive the non-return piece to rotate reversely along the arc-shaped non-return groove at the moment, and after the non-return piece rotates, the second threaded groove of the non-return piece changes due to movement, so that the non-return piece cannot rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a ball-bearing anti-loosening and anti-theft nut with good fastening effect. Background Art

[0002] The anti-theft nut can prevent the nut on the bolt from being disassembled, which makes it impossible to tighten the bolt. However, most of the existing ball anti-loosening and anti-theft nuts use a ball in an arc-shaped groove opened in the nut base structure to prevent the nut from rotating. When the bolt is tilted and the ball can only be located at the inner bottom of the arc-shaped groove under the action of gravity, the ball cannot prevent the nut from rotating and cannot play the role of anti-loosening and anti-theft. In addition, the groove opened on the inner wall of the nut will make the thread groove on the inner wall of the nut incomplete, which will reduce the strength of the connection between the nut and the bolt. Utility Model Content

[0003] The purpose of the utility model is to provide a ball anti-loosening and anti-theft nut with good fastening effect, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a ball anti-loosening and anti-theft nut with good fastening effect, comprising a nut base and a check piece, a first thread groove being provided inside the nut base, an arc-shaped check groove being provided on the inner wall of the nut base, and the check piece being movably connected inside the arc-shaped check groove.

[0005] Preferably, a second thread groove is provided on the side wall of the inner circle side of the return stop member, and the second thread groove is adapted to be arranged to match the first thread groove.

[0006] Preferably, the return stopper is arranged cocentrically with the nut base.

[0007] Preferably, the return stop is in a fan-shaped ring structure.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a ball anti-loosening and anti-theft nut with good fastening effect, has a simple structure and is easy to use. By arranging an arc-shaped check member with a second thread in the arc-shaped check groove inside the nut base, the second thread groove on the arc-shaped check member can be threadedly connected with the thread on the bolt, which can effectively avoid the problem of missing threads on the nut, and when the bolt is tightened, the check member extends toward the end of the inner wall of the arc-shaped check groove as the thread on the bolt extends and collides with the inner wall, so that it will not affect the tightening of the bolt. When the nut needs to be rotated in the opposite direction to loosen it, the friction between the check member and the bolt can drive the check member to rotate in the opposite direction along the arc-shaped check groove. After the check member rotates, its second thread groove changes due to the movement, making it unable to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 It is a cross-sectional view of the utility model;

[0011] Figure 3 This is a schematic structural diagram of the nut base in the utility model;

[0012] Figure 4 It is a cross-sectional view of the nut base in the utility model;

[0013] Figure 5 It is a structural diagram of the stop return part of the utility model.

[0014] In the figure: 1, nut base; 2, first thread groove; 3, arc-shaped non-return groove; 4, non-return member; 5, second thread groove. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-Figure 5 The utility model provides a technical solution: a ball anti-loosening and anti-theft nut with good fastening effect, including a nut base 1 and a check piece 4, a first thread groove 2 is opened inside the nut base 1, an arc-shaped check groove 3 is opened on the inner wall of the nut base 1, and the check piece 4 is movably connected inside the arc-shaped check groove 3.

[0017] A second thread groove 5 is provided on the side wall of the inner circle of the check member 4 . The second thread groove 5 is adapted to be arranged with the first thread groove 2 . The check member 4 is arranged concentrically with the nut base 1 and has a fan ring structure.

[0018] Specifically, in the initial state, the check piece 4 is located at the end inside the arc-shaped check groove 3 and the wide end of the check piece 4 conflicts with the inner wall of the arc-shaped check groove 3. During use, when the bolt is screwed into the first thread groove 2 inside the nut base 1, as the bolt is tightened, the thread on the bolt will rotate along the direction of the first thread groove 2 and the second thread groove 5, so that the bolt and the nut are tightened. During the tightening process, the check piece 4 continues to be located at the end of the arc-shaped check groove 3 and conflicts under the drive of friction, that is, the bolt is tightened clockwise at this time. After the tightening is completed, when the nut wants to be loosened, the friction between the bolt and the check piece 4 is greater than the friction between the check piece 4 and the arc-shaped check groove 3, then the bolt will drive the check piece 4 to rotate counterclockwise inside the arc-shaped check groove 3, and when the check piece 4 rotates counterclockwise inside the arc-shaped check groove 3, the second thread groove 5 will move and change, making it impossible for the bolt to rotate normally, thereby achieving the effect of preventing loosening and movement.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball bearing anti-loosening and anti-theft nut with good fastening effect, comprising a nut base (1) and a return stop (4), wherein a first thread groove (2) is provided inside the nut base (1), and characterized in that: An arc-shaped non-return groove (3) is provided on the inner wall of the nut base (1), and the non-return member (4) is movably connected inside the arc-shaped non-return groove (3).

2. A ball-type anti-loosening and anti-theft nut with good fastening effect according to claim 1, characterized in that: A second thread groove (5) is provided on the side wall of the inner circle of the return stop (4), and the second thread groove (5) is adapted to be arranged to match the first thread groove (2).

3. The ball-type anti-loosening and anti-theft nut with good fastening effect according to claim 1, characterized in that: The return stop (4) is arranged cocentrically with the nut base (1).

4. The ball-type anti-loosening and anti-theft nut with good fastening effect according to claim 1, characterized in that: The non-return member (4) is in a fan-ring structure.

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