CN111520392B

CN111520392B - Anti-loosing and anti-backing screw lock structure

Info

Publication number: CN111520392B
Application number: CN201910723419.2A
Authority: CN
Inventors: 于中贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-01
Filing date: 2019-08-06
Publication date: 2022-01-25
Anticipated expiration: 2039-08-06
Also published as: TWI692588B; TW202030422A; CN111520392A

Abstract

The present invention is an anti-loosening and anti-return screw lock structure, which comprises a bolt, a nut and a fastener, wherein the bolt has an external thread, and the external thread has at least one rotating groove, the at least one rotating The groove is arranged along the axial direction of the bolt and is rotated against the direction of the external thread, and the at least one rotary groove spans the external thread, and the nut has a plurality of slots, and when the nut nut When locked on the external thread, one of the at least one rotary groove will have an overlapping area with one of the plurality of slots, and the fastener has a snap end, and the fastener is fastened to the thread. on the cap, and the snap end extends through the slot into the rotary groove, so that the relative position of the bolt and the nut can be fixed by the fastener, so as to avoid the problem of loosening and displacement of the nut.

Description

Anti-loosing and anti-backing screw lock structure

Technical Field

The invention relates to a screw lock structure, in particular to an anti-loosening and anti-backing screw lock structure.

Background

The locking of the bolt and the nut is a common structure for assembling and fixing mechanical parts, and is widely used for various processing machines, household appliances, wheel frame assembly and the like, the bolt and the nut clamp different mechanical parts by utilizing a mutually matched thread structure to achieve the purpose of locking different mechanical parts, and the known problem is that the nut is loosened after being used for a long time in a vibrating environment to cause insufficient clamping force.

In order to solve the problem, various anti-loosening nuts and anti-loosening gaskets are used to prevent the nuts from loosening, such as taiwan patent No. I518255, "anti-loosening screw joint assembly", which discloses that a linear groove can be formed on the thread of a bolt, and the screw can be locked into the groove by an elastic member fixed in the nut, and fixed to the groove by the elastic member, so that the bolt and the nut are fixed, and the nut can be prevented from loosening.

However, the elastic element of the nut with the structure is a built-in structure, and once the nut is damaged or improperly installed, the nut cannot be observed from the outside, and the problem that the nut cannot be prevented from loosening due to failure often occurs. In addition, only when the elastic piece is clamped into the accommodating groove, the retaining effect is achieved, so that the relative position of the nut relative to the bolt (namely the rotation angle of the nut) is limited, the screw locking angle of the nut cannot be adjusted in a stepless manner, and the requirement for finely adjusting the clamping force of the screw lock cannot be met.

Disclosure of Invention

Therefore, the present invention is directed to provide an anti-loosening and anti-backing screw lock structure capable of finely adjusting the clamping force requirement of the screw lock.

The above object of the present invention is achieved by: an anti-loosening and anti-backing screw lock structure comprises a bolt, a nut and a fastener, wherein the bolt is provided with an external thread, the external thread is provided with at least one rotary groove, the at least one rotary groove is arranged along the axial direction of the bolt in a way of rotating along the direction opposite to the direction of the external thread, and the at least one rotary groove stretches across the external thread; the nut is provided with a plurality of slots, and when the nut is screwed on the external thread, one of the at least one rotary groove and one of the plurality of slots have an overlapped area; the fastener is provided with a fastening end, the fastener is fastened on the nut, and the fastening end passes through the open slot and extends into the rotary cutting groove.

The anti-loosening and anti-backing screw lock structure is preferably as follows: the at least one rotary groove is divided into two parts and is arranged on the external thread in an equally-divided manner.

The anti-loosening and anti-backing screw lock structure is preferably as follows: the grooves are six and are evenly distributed on the annular surface of the nut.

The anti-loosening and anti-backing screw lock structure is preferably as follows: the fastener is G-shaped.

The anti-loosening and anti-backing screw lock structure is preferably as follows: the plurality of slots are proximate to one end of the nut.

Therefore, the invention mainly aims at the rotary groove to align with the groove no matter where the relative position of the nut relative to the bolt is when the nut is screwed on the bolt by means of the arrangement of the at least one rotary groove and the plurality of grooves, so that the nut can be buckled on the nut by using the fastener, the buckle end passes through the groove and extends into the rotary groove, the relative position of the nut and the bolt can be fixed by means of the buckle end simultaneously passing through the groove and the rotary groove, and the nut is prevented from loosening.

Drawings

Fig. 1 is a perspective view of the bolt of the present invention.

Fig. 2 is a perspective view of the nut of the present invention.

Fig. 3 is a three-dimensional structure of the fastener of the invention.

Fig. 4 is a perspective view of the present invention.

Fig. 5 is a sectional structural view of the assembly of the present invention.

Fig. 6 is a plan view showing another bolt of the present invention.

Detailed Description

The present invention will now be described in further detail by way of examples, but it is to be understood that these examples are for illustrative purposes only and are not to be construed as limiting the practice of the present invention.

Please refer to fig. 1 to 5, which are a structural diagram, an assembly diagram and a sectional view of components of the present invention. As shown in the drawings, the present invention is an anti-loosening and anti-backing screw lock structure, which comprises a bolt 10, a nut 20 and a fastener 30, wherein the bolt 10 has an external thread 11, the direction of the external thread 11 can be a common clockwise direction, and the external thread 11 has at least one rotary groove 12 thereon, the at least one rotary groove 12 is rotatably disposed along the axial direction of the bolt 10 opposite to the direction of the external thread 11, and the at least one rotary groove 12 crosses over the external thread 11, that is, the direction of the at least one rotary groove 12 is counterclockwise.

The nut 20 has a plurality of slots 21, and when the nut 20 is screwed on the external thread 11, one of the at least one rotary groove 12 has an overlapping area with one of the plurality of slots 21, the number of the plurality of slots 21 is not particularly limited, preferably six, and is equally distributed on the annular surface of the nut 20, and the probability that the rotary groove 12 faces the overlapping slot 21 increases as the number of the plurality of slots 21 increases. In the implementation process, when the nut 20 is rotated, the rotary groove 12 and the slot 21 have an overlapping area at any time, so that the curvature and the slot width of the rotary groove 12 around the bolt 10 can be increased, the number and the width of the slot 21 can be increased, and the overlapping area of the rotary groove 12 and the slot 21 can be ensured at any time by adjusting the parameters (the curvature and the slot width). And for manufacturing considerations, the plurality of slots 21 may be located proximate to an edge 201 of the nut 20 to reduce manufacturing difficulties.

The fastening member 30 has a fastening end 31, the fastening member 30 can be in a G shape, the fastening member 30 is fastened to the nut 20, and since the rotary slot 12 and the slot 21 have an overlapping region, the fastening end 31 can extend into the rotary slot 12 through the slot 21, so as to fix the relative angle between the nut 20 and the bolt 10 by the fastening end 31 simultaneously passing through the slot 21 and the rotary slot 12.

Please refer to fig. 6, which is a plan view of another bolt 10A, as shown, it has two

rotational grooves

12, 12A, and the two

rotational grooves

12, 12A are disposed on the external thread 11 at equal intervals, under this design, without excessively increasing the curvature and the groove width of the

rotational grooves

12, 12A and the number and the width of the slots 21, the

rotational grooves

12, 12A and the slots 21 can have overlapped areas at any time for the snap end 31 (as shown in fig. 3) of the fastener 30 to snap in, which can maintain the structural strength of the nut 20 and the bolt 10, and meet the requirement of use.

As described above, the advantages of the present invention include at least:

1. the fastener is of an external display structure, once the fastener is broken or deformed to be damaged, the nut can be known to be loosened, and replacement processing can be carried out at the first time to ensure safety.

2. The rotary cutting groove and the open groove are provided with an area which is overlapped at any time, so that a user can finely adjust the clamping force of the nut and the bolt and fix the nut and the bolt by using the fastener, and the use requirement is met.

Claims

1. An anti-loosening and anti-return screw lock structure is characterized in that comprising:

A bolt, the bolt has an external thread, the external thread has at least one rotary groove, the at least one rotary groove is arranged along the axial direction of the bolt and is rotated opposite the direction of the external thread, and the at least one rotary groove a groove spans the external thread;

A nut, the nut has a plurality of grooves, the plurality of grooves are adjacent to one end of the nut, and when the nut is screwed on the external thread, one of the at least one rotating groove will overlap with one of the plurality of slots; and

A fastener, the fastener has a snap end, the fastener is fastened on the nut, and the snap end extends through the slot and into the rotary slot.

2 . The anti-loose and back-off screw lock structure according to claim 1 , wherein the at least one rotary groove is two, and the positions are equally arranged on the external thread. 3 .

3 . The anti-loosening and anti-return screw lock structure according to claim 1 , wherein the plurality of slots are six, and are equally distributed on the annular surface of the nut. 4 .

4 . The anti-loosening and anti-return screw lock structure according to claim 1 , wherein the fastener is G-shaped. 5 .