CN219082048U

CN219082048U - Self-locking fastening mechanism

Info

Publication number: CN219082048U
Application number: CN202223416234.3U
Authority: CN
Inventors: 陈刚; 陈强
Original assignee: Zhuzhou Yaohuiguang Electromechanical Research And Development Co ltd
Current assignee: Zhuzhou Yaohuiguang Electromechanical Research And Development Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-26
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a self-locking fastening mechanism which comprises a bolt main body, a main nut, a secondary nut, an elastic self-locking structure and a self-locking releasing structure, wherein a square groove is formed in the interior of the bolt main body, the main nut is installed on the exterior of the bolt main body through threaded connection, the secondary nut is also installed on the exterior of the bolt main body through threaded connection, the bottom of the secondary nut is abutted to the top of the main nut, the elastic self-locking structure is installed on the square groove, a limiting groove and a penetrating groove are formed in the interior of the secondary nut, the limiting groove is octagonal, the penetrating groove is located above the limiting groove and penetrates through the top of the secondary nut, and the self-locking releasing structure is installed on the top of the secondary nut. The utility model can automatically lock and prevent the bolt fastener from loosening and falling off, and simultaneously saves time and labor when being installed and disassembled compared with the original mode, has higher efficiency, and therefore, the practicability is improved.

Description

Self-locking fastening mechanism

Technical Field

The utility model relates to the technical field of fasteners, in particular to a self-locking fastening mechanism.

Background

Along with the development of scientific technology, the office conditions and living conditions of people are continuously improved, the modern buildings are increasingly used, a large number of bolt fasteners are required to be used for fixing when equipment is installed in the construction process, the bolts are easy to loose due to the fact that a large number of vibration is generated after the equipment is installed and operated, the fastening effect is lost, at the moment, equipment is damaged due to light weight, and dangerous consequences such as casualties are caused due to heavy weight, so that a bolt self-locking fastening mechanism is now arranged to avoid the occurrence of the situations, and the situation is specifically as follows.

Through searching, the patent with the publication number of CN207514052U discloses a bolt self-locking fastening mechanism, which relates to the technical field of hardware and is characterized in that the bolt is provided with a self-locking key installation key groove at the tail end; the top of the secondary nut is provided with a self-locking key slot; the self-locking key is characterized in that one end of the self-locking key extends into the self-locking key installation key groove, the other end of the self-locking key faces the self-locking key groove, a spring is wound on the self-locking key, one end of the spring is propped against the end part of the tail end of the bolt, and the other end of the spring is propped against a step of the self-locking key; the side wall of the secondary nut is provided with a through locking pin hole, and when the self-locking fastening mechanism is in a state to be locked, the locking pin penetrates through the locking pin hole and is clamped on a step of the self-locking key; when the self-locking fastening mechanism is in a locking state, the locking pin is separated from the step of the self-locking key, and the end part of the self-locking key is inserted into the locking key groove of the self-locking key. The device has the advantages that the bolt cannot be loosened no matter how the device vibrates, so that the device stably runs.

However, the above-mentioned patent has the following drawbacks:

the locking pin is movably installed in the process of installation and disassembly, the step is driven by the elasticity of the spring to be abutted against the locking pin to form fixation, after the bolt fastener is installed, the two locking pins are required to be withdrawn, and because the abutting acting force between the locking pin and the step is large, workers cannot conveniently and rapidly withdraw the two locking pins by hand at this time, the installation work is time-consuming and labor-consuming, the efficiency is low, after the two locking pins are withdrawn, the locking pins can only be stored and taken in separately, when the bolt fastener is required to be disassembled next time, the two locking pins are required to be found again and other tools are required to be matched to push the boss, so that the step and the locking key groove are separated and reset, and then the locking restriction can be released by inserting the two locking pins.

Disclosure of Invention

The utility model aims to provide a self-locking fastening mechanism, which is used for solving the problems that in the installation and the disassembly processes of the self-locking fastening mechanism, the self-locking fastening mechanism needs to be matched with locking pins for use, the locking pins are movably installed, the steps are driven to be abutted with the locking pins through the elastic force of springs for forming fixation, after a bolt fastener is installed, two locking pins need to be withdrawn, and because the abutting acting force between the locking pins and the steps is large, a worker cannot conveniently withdraw the two locking pins by hand at this moment, the installation work is time-consuming and labor-consuming, the efficiency is low, the locking pins can only be stored and taken in separately after the two locking pins are withdrawn, and when the bolt fastener needs to be disassembled next time, the two locking pins need to be found again and matched with other tools for pushing a boss, so that the steps and the self-locking key are separated and reset, and then the locking restriction can be relieved after the two locking pins are inserted, and the time-consuming and labor-consuming are low, and the whole practicality is general.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a self-locking fastening mechanism, includes bolt main part, main nut, secondary nut, elasticity self-locking structure and releases the self-locking structure, square groove has been seted up to the inside of bolt main part, the main nut passes through threaded connection and installs in the outside department of bolt main part, secondary nut installs in the outside department of bolt main part through threaded connection equally, just the bottom and the main nut top butt of secondary nut, elasticity self-locking structure installs in square groove department, limit groove and run through the groove have been seted up in the inside of secondary nut, the limit groove is the octagon, run through the groove and be located limit groove top and run through the top of secondary nut, release self-locking structure and install in the top department of secondary nut.

Preferably, the elasticity auto-lock structure includes square post, stopper and spring, square post activity inserts to square groove in, the stopper is fixed to be located square post's top department, spring activity suit is in square post's outside department, just the both ends of spring respectively with bolt main part and stopper fixed connection, the shape and the size of stopper all match with the spacing groove phase-match, the fixed lug that is equipped with in top department of stopper, the size of lug and run through groove phase-match.

Preferably, the limiting block is fixedly connected with the square column in a welding mode, and the protruding block is fixedly connected with the limiting block in the same welding mode.

Preferably, the limit groove is located in a position including, but not limited to, octagon, decagon and dodecagon.

Preferably, the release self-locking structure comprises a mounting frame and a butt bolt, wherein the mounting frame is in an inverted concave shape, the mounting frame is fixedly arranged at the top of the secondary nut in a welding mode, one end of the butt bolt penetrates through the mounting frame in a threaded connection mode, and the size of the butt bolt is slightly smaller than that of the penetrating groove.

The utility model provides a self-locking fastening mechanism, which has the following beneficial effects:

according to the utility model, the bolt main body, the main nut, the secondary nut, the elastic self-locking structure and the release self-locking structure are arranged, so that when the bolt fastener is installed, the self-locking and anti-loosening treatment can be carried out on the bolt fastener through the elastic self-locking structure matched with the release self-locking structure, and then the self-locking limit of the bolt fastener can be released through the release self-locking structure, the secondary nut and the main nut are quickly disassembled, the disassembling work of the bolt fastener is completed, the design of a locking pin is cancelled on the original basis, and the design of an abutting bolt is additionally arranged, so that the installation and the disassembling work are time-saving and labor-saving, and the efficiency is high.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of an abutting bolt and bump abutting structure according to the present utility model;

FIG. 3 is a schematic view of the bottom view of the secondary nut of the present utility model;

fig. 4 is a schematic bottom view of a square column according to the present utility model.

In the figure: 1. a bolt body; 2. a main nut; 3. a secondary nut; 4. a square groove; 5. a limit groove; 6. a through groove; 7. square columns; 8. a limiting block; 9. a spring; 10. a bump; 11. a mounting frame; 12. and abutting the bolt.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-4, the present utility model provides a technical solution: the utility model provides a self-locking fastening mechanism, includes bolt main part 1, main nut 2, secondary nut 3, elasticity self-locking structure and releases the self-locking structure, square groove 4 has been seted up to the inside of bolt main part 1, main nut 2 passes through threaded connection and installs in the outside department of bolt main part 1, secondary nut 3 is installed in the outside department of bolt main part 1 through threaded connection equally, just the bottom and the main nut 2 top butt of secondary nut 3, elasticity self-locking structure installs in square groove 4 departments, limit groove 5 and run through groove 6 have been seted up in the inside of secondary nut 3, limit groove 5 is the octagon, run through groove 6 is located limit groove 5 top and runs through the top of secondary nut 3, release the self-locking structure and install in the top department of secondary nut 3.

The elastic self-locking structure comprises a square column 7, a limiting block 8 and a spring 9, wherein the square column 7 is movably inserted into the square groove 4, the limiting block 8 is fixedly arranged at the top of the square column 7, the spring 9 is movably sleeved at the outer part of the square column 7, two ends of the spring 9 are respectively fixedly connected with the bolt main body 1 and the limiting block 8, the shape and the size of the limiting block 8 are matched with those of the limiting groove 5, a protruding block 10 is fixedly arranged at the top of the limiting block 8, the size of the protruding block 10 is matched with that of the penetrating groove 6, when a bolt fastener is installed, the bolt main body 1 can be penetrated through a position to be fastened, then the main nut 2 is in threaded connection with the bolt main body 1 and fixed, the abutting bolt 12 is rotated to enable the abutting bolt 12 to move downwards to pass through the through groove 6, then the secondary nut 3 is in threaded connection with the bolt main body 1 until the bottom of the secondary nut 3 abuts against the main nut 2, at the moment, the abutting bolt 12 is rotated and loosened to enable the abutting bolt 12 to be reset and withdraw from the through groove 6, the limiting block 8 and the protruding block 10 can rise under the action of the elastic force of the spring 9 until the limiting block 8 is clamped with the limiting groove 5, and if the clamping position deviation occurs, the secondary nut 3 can be slightly rotated positively and negatively until the limiting block 8 is clamped with the limiting groove 5, and then the automatic locking treatment of the bolt main body 1 can be completed;

the limiting block 8 is fixedly connected with the square column 7 in a welding mode, and the lug 10 is fixedly connected with the limiting block 8 in the same welding mode, so that the limiting block 8 and the square column 7 and the lug 10 and the limiting block 8 have high connection strength and are not easy to break;

the limit groove 5 is positioned in the shape comprising, but not limited to, octagon, decagon and dodecagon, so that the shapes of the limit groove 5 and the limit block 8 can be changed according to actual needs, and the number of sides is increased or reduced;

the self-locking removing structure comprises a mounting frame 11 and a butt bolt 12, the mounting frame 11 is in an inverted concave shape, the mounting frame 11 is fixedly mounted at the top of the secondary nut 3 in a welding mode, one end of the butt bolt 12 penetrates through the mounting frame 11 in a threaded connection mode, the size of the butt bolt 12 is slightly smaller than that of the through groove 6, when a bolt fastener is detached, other tools are not required to be used for pushing the lug 10, the butt bolt 12 only needs to be rotated, the lug 10 and the limiting block 8 can be pushed to reset by downwards moving the butt bolt 12, self-locking limitation of the bolt fastener is removed, the secondary nut 3 and the primary nut 2 are quickly detached, and detachment of the fastener is completed.

Working principle: when installing the bolt fastener, the bolt main body 1 can be penetrated through the position to be fastened, then the main nut 2 is in threaded connection with the bolt main body 1, then the abutting bolt 12 is rotated to downwards move through the through groove 6, the limit block 8 is ensured not to be clamped with the limit groove 5, then the secondary nut 3 is in threaded connection with the bolt main body 1 until the bottom of the secondary nut 3 abuts against the main nut 2, at the moment, the abutting bolt 12 is loosened by rotating again to enable the secondary nut 3 to be reset and withdraw from the through groove 6, the limit block 8 and the lug 10 can be lifted under the action of the elasticity of the spring 9 until the limit block 8 is clamped with the limit groove 5, and if the clamping position deviation occurs, namely, the outer edge of the limit block 8 is not aligned with the inner edge of the limit groove 5, the secondary nut 3 can be slightly rotated forwards and backwards until the limit block 8 is clamped with the limit groove 5, the automatic locking treatment of the bolt main body 1 can be completed, the principle is that the square groove 4 limits the square column 7, the square column 7 cannot rotate, the square column 7 is matched with the limiting block 8 to limit the limiting groove 5, the secondary nut 3 cannot rotate, therefore, the secondary nut 3 and the main nut 2 are not easy to loose and fall off, the automatic locking purpose is achieved, and when the bolt is dismounted subsequently, the abutting bolt 12 is still mounted at the mounting frame 11, so that other tools are not required to push the lug 10, only the abutting bolt 12 is required to rotate, the lug 10 and the limiting block 8 can be pushed and reset by downwards moving, the self-locking limit of the bolt fastener is relieved, the secondary nut 3 and the main nut 2 are dismounted rapidly, the dismounting work of the fastener is completed, the whole time and labor are saved, and the efficiency is higher.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a self-locking fastening mechanism, includes bolt main part (1), main nut (2), secondary nut (3), elasticity self-locking structure and releases self-locking structure, its characterized in that: the novel self-locking bolt is characterized in that a square groove (4) is formed in the bolt main body (1), the main nut (2) is installed on the outer portion of the bolt main body (1) through threaded connection, the secondary nut (3) is installed on the outer portion of the bolt main body (1) through threaded connection, the bottom of the secondary nut (3) is abutted to the top of the main nut (2), the elastic self-locking structure is installed on the square groove (4), a limiting groove (5) and a penetrating groove (6) are formed in the inner portion of the secondary nut (3), the limiting groove (5) is octagonal, the penetrating groove (6) is located above the limiting groove (5) and penetrates the top of the secondary nut (3), and the self-locking structure is installed on the top of the secondary nut (3).

2. A self-locking fastening mechanism according to claim 1, wherein: the elastic self-locking structure comprises a square column (7), a limiting block (8) and a spring (9), wherein the square column (7) is movably inserted into a square groove (4), the limiting block (8) is fixedly arranged at the top of the square column (7), the spring (9) is movably sleeved at the outer part of the square column (7), two ends of the spring (9) are fixedly connected with a bolt main body (1) and the limiting block (8) respectively, the shape and the size of the limiting block (8) are matched with those of the limiting groove (5), a protruding block (10) is fixedly arranged at the top of the limiting block (8), and the size of the protruding block (10) is matched with that of a penetrating groove (6).

3. A self-locking fastening mechanism according to claim 2, wherein: the limiting block (8) is fixedly connected with the square column (7) in a welding mode, and the lug (10) is fixedly connected with the limiting block (8) in the same welding mode.

4. A self-locking fastening mechanism according to claim 1, wherein: the limit groove (5) is positioned in the shape of octagon, decagon and dodecagon without limitation.

5. A self-locking fastening mechanism according to claim 1, wherein: the self-locking releasing structure comprises a mounting frame (11) and a butt bolt (12), wherein the mounting frame (11) is in an inverted concave shape, the mounting frame (11) is fixedly arranged at the top of the secondary nut (3) in a welding mode, one end of the butt bolt (12) penetrates through the mounting frame (11) through threaded connection, and the size of the butt bolt (12) is slightly smaller than that of the penetrating groove (6).