CN216895286U

CN216895286U - Locking bolt structure

Info

Publication number: CN216895286U
Application number: CN202220204282.7U
Authority: CN
Inventors: 王振生
Original assignee: Huizhou Shenghu Fasteners Technology Co ltd
Current assignee: Huizhou Shenghu Fasteners Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-07-05
Anticipated expiration: 2032-01-25

Abstract

The locking bolt structure comprises a bolt connection assembly and a locking assembly, wherein the bolt connection assembly comprises a bolt and a nut, the nut is in bolt connection with the bolt, the locking assembly comprises a locking sleeve, a locking cover and an elastic piece, the locking sleeve is arranged on one side surface, far away from the bolt, of the nut, the elastic piece is arranged in the locking sleeve, the elastic piece is sleeved on the bolt, the locking cover is rotatably arranged on the locking sleeve and connected with the elastic piece, and the locking cover is used for driving the elastic piece to contract so that the elastic piece clamps the bolt. So, it twists reverse to move the elastic component through the locking lid to make the elastic component clamp the bolt fixedly, can prevent effectively that the nut from producing not hard up for the bolt, thereby can deal with the service environment of high strength vibrations.

Description

Locking bolt structure

Technical Field

The utility model relates to the field of mechanical fasteners, in particular to a locking bolt structure.

Background

The bolt structure generally includes a bolt and a nut, and the bolt and the nut are provided with an internal thread or an external thread adapted to each other, so that the external thread and the internal thread are screwed and fixed, thereby fastening at least two independent and separate objects together.

In order to improve the stability of the bolt and the nut, a washer/gasket is usually sleeved on the bolt, when the bolt is screwed in place, the bolt head can extrude the washer/gasket, so that the washer/gasket is stressed and deformed, and meanwhile, the bolt head can also receive the reaction force of the washer/gasket, so that the bolt and the nut have enough stability, can deal with the vibration strength to a certain degree, and avoid the loosening of the bolt and the nut due to vibration.

However, the above-mentioned method using the washer/gasket has a problem that, because the washer is usually in a non-closed circular structure, when the pressure of the bolt head is too high, the washer is deformed by external force and expands outwards, so that there is a risk of being squeezed off by the bolt head, and the elasticity of the washer itself is small, so that the gasket cannot effectively cope with the bolt loosening problem in an environment with too high vibration intensity, that is, the conventional method using the washer/gasket for locking is difficult to reliably cope with high-intensity vibration, so that the bolt and the nut have a loosening problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a locking bolt structure which can reliably cope with high-strength vibration without loosening.

The purpose of the utility model is realized by the following technical scheme:

a locking bolt structure comprising:

the bolt joint assembly comprises a bolt and a nut, and the nut is in bolt joint with the bolt; and

the locking assembly comprises a locking sleeve, a locking cover and an elastic piece, the locking sleeve is arranged on the side face, away from the bolt, of the nut, the elastic piece is arranged in the locking sleeve, the elastic piece is connected to the bolt in a sleeved mode, the locking cover is rotatably arranged on the locking sleeve and connected with the elastic piece, and the locking cover is used for driving the elastic piece to contract so that the elastic piece clamps the bolt tightly.

In one embodiment, a locking groove is formed in the outer side wall of the locking sleeve, a limiting boss is arranged on the inner side wall of the locking cover, and the limiting boss is slidably arranged in the locking groove.

In one embodiment, the locking groove includes an access portion, a rotation portion and a clamping portion, the rotation portion is disposed at an end of the locking sleeve close to the nut, the access portion is communicated with the rotation portion, the access portion extends to an end of the locking sleeve far away from the nut, the clamping portion is communicated with the rotation portion, and a space is disposed between the clamping portion and the access portion.

In one embodiment, the rotating part is arranged around the outer side wall of the locking sleeve.

In one embodiment, the access portion is provided in plurality, and a space is provided between the access portions.

In one embodiment, a plurality of limiting bosses are arranged, and when the locking cover is close to the locking sleeve, the limiting bosses are arranged in the access parts in a one-to-one corresponding sliding mode.

In one embodiment, a positioning groove is formed in a side surface of the nut close to the locking sleeve, the positioning groove is located in the locking sleeve, and one end of the elastic element is received in the positioning groove.

In one embodiment, the locking sleeve and the nut are of an integral structure.

In one embodiment, the resilient member is a spring.

Compared with the prior art, the utility model has at least the following advantages:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a locking bolt structure according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a locking cover and a limiting boss according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a nut and a locking sleeve according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings.

Referring to fig. 1, a locking bolt structure 10 includes a bolt assembly 100 and a locking assembly 200, the bolt assembly 100 includes a bolt 110 and a nut 120, the nut 120 is in bolt connection with the bolt 110, the locking assembly 200 includes a locking sleeve 210, a locking cover 220 and an elastic member 230, the locking sleeve 210 is disposed on a side of the nut 120 away from the bolt 110, the elastic member 230 is disposed in the locking sleeve 210, the elastic member 230 is sleeved on the bolt 110, the locking cover 220 is rotatably disposed on the locking sleeve 210, the locking cover 220 is connected with the elastic member 230, and the locking cover 220 is used for driving the elastic member 230 to contract so that the elastic member 230 clamps the bolt 110.

It should be noted that an external thread is disposed on the surface of the bolt 110, and an internal thread is disposed on the nut 120, wherein the internal thread and the external thread are adapted to be screwed together, so that the bolt 110 and the nut 120 are screwed together. Further, locking sleeve 210 is mounted on a side of nut 120 away from bolt 110. in one embodiment, locking sleeve 210 is integrally formed with nut 120 such that locking sleeve 210 and nut 120 have sufficient structural strength therebetween. In one embodiment, the locking sleeve 210 has a circular truncated cone structure, wherein the axial center of the locking sleeve 210 and the axial center of the nut 120 coincide with each other. In one embodiment, the nut 120 has a hexagonal frustum structure, such that the nut 120 can be rotated by a wrench. Elastic member 230 is installed in locking sleeve 210, and elastic member 230 is fitted on the outer sidewall of bolt 110. Between locking cover 220 and locking sleeve 210 is a detachable structure, specifically, locking cover 220 can be buckled on locking sleeve 210 and can rotate relative to locking sleeve 210. When the locking cover 220 is close to the locking sleeve 210, the locking cover 220 pushes the elastic member 230 to compress the elastic member 230, after the locking cover 220 is close to the limit position of the locking sleeve 210, by rotating the locking cover 220, the locking cover 220 drives one end of the elastic member 230 to rotate, and the other end of the elastic member 230 is fixedly connected by the nut 120, so that the elastic member 230 can be twisted, when the elastic member 230 rotates along the twisting direction of the elastic member 230, the elastic member 230 is in a contracted state, so that the central area of the elastic member 230 is reduced, and the bolt is clamped and fixed. When the elastic member 230 is rotated against its own twisting direction, the elastic member 230 is in a flared state, so that the central area of the elastic member 230 becomes large, thereby loosening the clamping fixation of the bolt. Specifically, when the self-twisting direction of the elastic member 230 is clockwise, the locking cover 220 drives the elastic member 230 to rotate clockwise along the self-twisting direction, and rotate counterclockwise against the self-twisting direction; when the self-twisting direction of the elastic member 230 is counterclockwise, the locking cover 220 drives the elastic member 230 to rotate counterclockwise along the self-twisting direction, and the clockwise rotation is opposite to the self-twisting direction. In one embodiment, the elastic member 230 is twisted in a direction corresponding to the extension direction of the external thread of the bolt 110. Thus, the locking cover 220 drives the elastic member 230 to compress and rotate, and can drive the elastic member 230 to contract or expand, so as to clamp and fix or loosen the bolt 110, and when the bolt 110 is screwed with the nut 120 in place, the elastic member 230 clamps and locks the bolt 110. Therefore, the high-strength vibration can be responded, and the looseness between the bolt 110 and the nut 120 is effectively avoided.

Referring to fig. 1 and 2, in an embodiment, a locking groove 211 is formed on an outer side wall of the locking sleeve 210, a limiting boss 240 is disposed on an inner side wall of the locking cover 220, and the limiting boss 240 is slidably disposed in the locking groove 211.

It should be noted that, in order to enable lock cover 220 to move smoothly relative to lock sleeve 210, lock groove 211 is formed in lock sleeve 210, and stop boss 240 is provided on lock cover 220, so that lock cover 220 can move smoothly relative to lock sleeve 210 when stop boss 240 slides along lock groove 211, lock cover 220 needs to be able to approach lock sleeve 210 and also rotate relative to lock sleeve 210.

Further, referring to fig. 1, in an embodiment, the locking groove 211 includes an access portion 211a, a rotation portion 211b, and a blocking portion 211c, the rotation portion 211b is disposed on an end of the locking sleeve 210 close to the nut 120, the access portion 211a is communicated with the rotation portion 211b, the access portion 211a extends to an end of the locking sleeve 210 away from the nut 120, the blocking portion 211c is communicated with the rotation portion 211b, and a space is disposed between the blocking portion 211c and the access portion 211 a.

It should be noted that, since the extending direction of the access portion 211a is parallel to the axial direction of the bolt 110, when the limit boss 240 slides along the access portion 211a, the locking cover 220 can slide relative to the locking sleeve 210 to approach or separate from the nut 120. And rotation portion 211b is located at the end of locking sleeve 210 close to nut 120, and limiting boss 240 can slide into rotation portion 211b along access portion 211a, when limiting boss 240 slides along rotation portion 211b, locking cover 220 can rotate relative to locking sleeve 210, and then locking cover 220 can drive elastic component 230 to twist. The positioning portion 211c is communicated with the rotating portion 211b, when the locking cover 220 drives the elastic member 230 to twist to a proper position, the limiting boss 240 slides into the positioning portion 211c, because the locking cover 220 is pushed by the elastic member 230, the limiting boss 240 is clamped and fixed by the inner side wall of the positioning portion 211c, and the locking cover 220 and the locking sleeve 210 are kept at a relative position and are not changed, so that the twisted elastic member 230 is also kept in a twisted state, and the bolt 110 can be reliably clamped and fixed.

In one embodiment, the rotating portion 211b is disposed around the outer sidewall of the locking sleeve 210. It should be noted that, in order to allow locking cover 220 to continuously rotate in the same direction with respect to locking sleeve 210, rotating portion 211b is provided in a structure surrounding the outer side wall of locking sleeve 210.

Referring to fig. 1 and 2, in an embodiment, a plurality of access portions 211a are provided, and a space is provided between each access portion 211 a. A plurality of limit bosses 240 are provided, and when the locking cover 220 approaches the locking sleeve 210, the limit bosses 240 are slidably provided in the respective in-out portions 211a in a one-to-one correspondence.

In order to further improve the sliding stability of the locking cover 220 with respect to the locking sleeve 210, a plurality of in-and-out portions 211a are provided, and a plurality of stopper bosses 240 are provided correspondingly so that the stopper bosses 240 can slide in the in-and-out portions 211a in a one-to-one correspondence. The limit bosses 240 are respectively slid in the access portions 211a and then enter the rotation portions 211 b. In one embodiment, the number of the access portions 211a and the number of the limiting bosses 240 are four, and an included angle between any two adjacent access portions 211a or an included angle between any two adjacent limiting bosses 240 is 90 °.

Referring to fig. 3, in an embodiment, a positioning groove 121 is formed on a side surface of the nut 120 close to the locking sleeve 210, the positioning groove 121 is located in the locking sleeve 210, and one end of the elastic element 230 is received in the positioning groove 121.

It should be noted that, in order to ensure that the elastic member 230 can be smoothly driven to twist when the locking cover 220 rotates relative to the locking sleeve 210, both ends of the elastic member 230 need to be fixedly connected to the locking cover 220 and the locking sleeve 210, respectively. Specifically, since locking sleeve 210 is fixedly mounted on nut 120, the end of elastic member 230 fixedly connected to locking sleeve 210 can be fixedly connected to nut 120. For example, the nut 120 is provided with a positioning groove 121, so that one end of the elastic member 230 is accommodated in the positioning groove 121, and the elastic member 230 is limited and fixed by the inner side wall of the positioning groove 121, so that the elastic member 230 and the nut 120 are fixedly connected.

Referring to fig. 2, in an embodiment, since the locking cover 220 and the elastic member 230 are also fixedly connected, a groove 221 is also formed on an inner side wall of the locking cover 220, so that the elastic member 230 is sunk into the groove 221, and the elastic member 230 is limited and fixed by the inner side wall of the groove 221. In one embodiment, the elastic member 230 is a spring, and two ends of the spring are respectively accommodated in the positioning groove 121 and the groove 221 of the locking cover 220, so that two ends of the elastic member 230 are respectively fixedly connected with the nut 120 and the locking cover 220.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A locking bolt structure, comprising:

2. The locking bolt structure of claim 1, wherein a locking groove is formed in an outer side wall of the locking sleeve, and a limiting boss is arranged on an inner side wall of the locking cover and is slidably arranged in the locking groove.

3. The lock bolt structure according to claim 2, wherein the lock groove includes an access portion, a rotation portion, and a retaining portion, the rotation portion is provided on an end of the lock sleeve close to the nut, the access portion communicates with the rotation portion, the access portion extends to an end of the lock sleeve away from the nut, the retaining portion communicates with the rotation portion, and a space is provided between the retaining portion and the access portion.

4. The lock bolt structure of claim 3, wherein the rotating portion is disposed around an outer sidewall of the lock sleeve.

5. The lock bolt structure according to claim 4, wherein the access portion is provided in plurality, and a space is provided between the access portions.

6. The locking bolt structure of claim 5, wherein a plurality of limiting bosses are provided, and when the locking cover is close to the locking sleeve, the limiting bosses are slidably provided in the access portions in a one-to-one correspondence manner.

7. The locking bolt structure of claim 1, wherein a positioning groove is formed in a side surface of the nut adjacent to the locking sleeve, the positioning groove is located in the locking sleeve, and one end of the elastic member is received in the positioning groove.

8. The locking bolt structure of claim 1, wherein the locking sleeve and the nut are of an integrally formed structure.

9. The lock bolt structure of claim 1, wherein the elastic member is a spring.