CN219587945U

CN219587945U - Fastening screw with self-locking structure

Info

Publication number: CN219587945U
Application number: CN202320805583.XU
Authority: CN
Inventors: 方逸
Original assignee: Foshan Shunde Jingye Hardware Electric Co ltd
Current assignee: Foshan Shunde Jingye Hardware Electric Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-08-25
Anticipated expiration: 2033-04-12

Abstract

The utility model relates to the technical field of metal accessories and discloses a fastening screw with a self-locking structure, which comprises a screw main body, wherein a screw jacking block is arranged at the top of the screw main body, a self-locking rod is arranged in the screw main body and the screw jacking block through an inner space which is formed by penetrating, a limiting plate is arranged at the top of the self-locking rod, a pushing cover is arranged at the top of the limiting plate, a rebound groove is formed in the center of the top of the screw jacking block, and a compression spring is arranged at the bottom of the limiting plate. According to the screw self-locking device, the self-locking rod, the pushing cover, the compression spring, the fixing rod and the limiting block are matched, so that the compression spring applies upward pushing force to the self-locking rod after the screw main body is installed, the fixing rod drives the limiting block to synchronously move upwards and contact with the inner wall of the thread groove to generate friction, the stability of the screw main body is improved, meanwhile, the friction of the limiting block can be canceled through rotating and pressing of the screw driver on the cross groove, the screw self-locking device is convenient to install and detach, convenient to use and capable of improving working efficiency.

Description

Fastening screw with self-locking structure

Technical Field

The utility model relates to the technical field of metal accessories, in particular to a fastening screw with a self-locking structure.

Background

The screw has the function of connecting two workpieces together for fastening, and the screw is a tool for fastening the workpiece gradually by utilizing the physical and mathematical principles of the circular rotation and friction force of the inclined plane of the object. The screw is an indispensable industrial necessity in daily life, such as a very small screw used for cameras, glasses, clocks, electronics and the like; general screws for televisions, electrical products, musical instruments, furniture, and the like; as for engineering, construction and bridge, large-scale screws and nuts are used; traffic tools, airplanes, electric cars, automobiles and the like are used together by the large screws and the small screws. Screws are an important task in industry, and as long as industry exists on earth, the function of the screw is always important. Screws are a common utility model in production and life of people for thousands of years, and are the first utility model of human beings according to the application field.

The existing common fastening screw lacks automatic locking function after the installation, and the inside of screw groove can not laminate the fastening screw completely, leads to the screw to loosen easily after long-time use, influences the stability of connecting the article, leads to the damage of article easily, and carries out locking processing again comparatively troublesome after the installation when the fastening screw, reduces work efficiency, carries out locking processing through rubberizing or connecting piece simultaneously after, the dismantlement of screw needs to dismantle locking piece earlier, also comparatively troublesome, later maintenance difficulty, therefore the fastening screw lacks a self-locking structure.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a fastening screw with a self-locking structure, which solves the self-locking problem after the fastening screw is installed.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a fastening screw with auto-lock structure, includes the screw main part, the top of screw main part is equipped with the screw kicking block, the inside of screw main part and screw kicking block is equipped with from the locking lever through the inner space who link up and offer, the top of auto-lock lever is equipped with the limiting plate, the top of limiting plate is equipped with promotes the lid, rebound groove has been offered to the center department at screw kicking block top, the bottom of limiting plate is equipped with compression spring, the surface from the locking lever is equipped with a plurality of dead lever, the top of dead lever is equipped with the stopper, the surface of screw main part has the screw groove, a plurality of through-holes have been seted up on the surface of screw groove.

Optionally, a screw head is provided at the bottom of the screw body.

Optionally, a cross groove is formed in the center of the top of the pushing cover.

Optionally, the bottom of the compression spring is interconnected with the bottom of the inner wall of the rebound groove.

Optionally, the cross section of the rebound groove is convex.

Optionally, the diameter of the top of the rebound groove is smaller than the diameter of the limiting plate.

Optionally, the diameter of the top of the rebound groove is larger than the diameter of the push cap.

Optionally, a friction material is arranged at the top of the limiting block.

Optionally, the through hole and the limiting block are mutually matched, and the limiting block penetrates through the through hole to sum up, so that the technical effects and advantages of the utility model are as follows:

1. the screw driver is inserted into the cross groove, the screw driver is forcefully rotated after the screw driver is aligned with the screw groove to be driven, the screw head drives the screw driver to enter the screw groove, the pushing cover is pressed by the force of the screw driver to compress the spring, so that the self-locking rod moves downwards, the fixing rod on the surface of the self-locking rod drives the limiting block to synchronously move downwards, the limiting block is lower than the horizontal height of the through hole, and the screw driver can be directly installed into the screw hole, so that the screw driver is convenient to use; after the screw main body is installed, the screw driver does not apply pressure to the pushing cover any more, the compression spring can upwards extrude the pushing cover due to the self pressure, so that the self-locking rod moves upwards, at the moment, the fixing rod on the surface of the self-locking rod can drive the limiting block to synchronously move upwards, the limiting block protrudes out of the horizontal height of the through hole, the friction material is in contact with the inner wall of the thread groove, the friction force between the screw main body and the thread groove is improved, and the screw is more stable to fix; when the screw main body needs to be taken down, the friction force between the friction material and the inner wall of the thread groove can be canceled by pressing the pushing cover again by the screwdriver.

2. According to the screw self-locking device, the self-locking rod, the pushing cover, the compression spring, the fixing rod and the limiting block are matched, so that the compression spring applies upward pushing force to the self-locking rod after the screw main body is installed, the fixing rod drives the limiting block to synchronously move upwards and contact with the inner wall of the thread groove to generate friction, the stability of the screw main body is improved, meanwhile, the friction of the limiting block can be canceled through rotating and pressing of the screw driver on the cross groove, the screw self-locking device is convenient to install and detach, convenient to use and capable of improving working efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a fastening screw with a self-locking structure according to the present utility model;

FIG. 2 is a schematic view of the self-locking rod of the fastening screw with self-locking structure of the present utility model;

FIG. 3 is a side view of a compression spring of a fastening screw with a self-locking structure of the present utility model normally unstressed;

fig. 4 is a side view of the compression spring force of the fastening screw with self-locking structure of the present utility model.

In the figure: 1. a screw body; 101. a thread groove; 102. a through hole; 2. a screw ejector block; 3. a self-locking lever; 4. a limiting plate; 5. pushing the cover; 6. a rebound groove; 7. a compression spring; 8. a fixed rod; 9. a limiting block; 10. a screw head; 11. a cross groove; 12. friction material.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: reference is made to a fastening screw with self-locking structure as shown in figures 1-4. The utility model provides a fastening screw with auto-lock structure, including screw main part 1, screw main part 1's top is equipped with screw kicking block 2, screw main part 1 and screw kicking block 2's inside is equipped with from locking lever 3 through the inner space who link up and offer, the top of auto-lock lever 3 is equipped with limiting plate 4, the top of limiting plate 4 is equipped with promotes lid 5, rebound groove 6 has been offered to the center department at screw kicking block 2 top, the bottom of limiting plate 4 is equipped with compression spring 7, the surface of auto-lock lever 3 is equipped with a plurality of dead lever 8, the top of dead lever 8 is equipped with stopper 9, screw main part 1's surface has thread groove 101, a plurality of through-holes 102 have been seted up on the surface of thread groove 101.

The screw head 10 is arranged at the bottom of the screw main body 1, the cross groove 11 is formed in the center of the top of the pushing cover 5, the pushing cover 5 is made of a magnet, the screwdriver is convenient to adsorb and use, the bottom of the compression spring 7 is connected with the bottom of the inner wall of the rebound groove 6, the section of the rebound groove 6 is in a convex shape, the diameter of the top of the rebound groove 6 is smaller than that of the limiting plate 4, the diameter of the top of the rebound groove 6 is larger than that of the pushing cover 5, the compression spring 7 can not push the pushing cover 5 to completely eject the rebound groove 6, the friction material 12 is arranged at the top of the limiting block 9, the friction material 12 is not limited, any friction-improving material such as carbon fiber friction material, carbon-carbon friction material adhesion, paper-based friction material and resin coating friction can be adopted, the through hole 102 and the limiting block 9 are mutually matched, and the limiting block 9 penetrates through the through hole 102.

The working principle of the utility model is as follows: after the screw driver is inserted into the cross groove 11, the screw main body 1 is aligned with a screw groove required to be driven into, the screw driver forcibly rotates, the screw head 10 drives the screw main body 1 to enter the screw groove, the pushing cover 5 can squeeze the compression spring 7 due to the force of the screw driver, so that the self-locking rod 3 moves downwards, the fixing rod 8 on the surface of the self-locking rod 3 can drive the limiting block 9 to synchronously move downwards, the limiting block 9 is lower than the horizontal height of the through hole 102, and the screw main body 1 can be directly installed into the screw hole, so that the screw is convenient to use; when the screw main body 1 is installed, the screw driver does not apply pressure to the pushing cover 5 any more, the compression spring 7 can upwards extrude the pushing cover 5 due to the self pressure, so that the self-locking rod 3 moves upwards, at the moment, the fixing rod 8 on the surface of the self-locking rod 3 can drive the limiting block 9 to synchronously move upwards, so that the limiting block 9 protrudes out of the horizontal height of the through hole 102, the friction material 12 is in contact with the inner wall of the thread groove, the friction force of the screw main body 1 and the thread groove is improved, and the screw is more stable to fix; when the screw body 1 needs to be taken down, the friction force between the friction material 12 and the inner wall of the thread groove can be canceled by pressing the pushing cover 5 again by the screwdriver.

Through the cooperation setting of self-locking lever 3, promote lid 5, compression spring 7, dead lever 8 and stopper 9 for compression spring 7 applys upward thrust to self-locking lever 3 after the installation of screw main part 1, and dead lever 8 drives stopper 9 synchronous upward movement, and with the inner wall contact of screw groove, produce the friction, improve the stability of screw main part 1, the screwdriver can cancel the friction of stopper 9 to the rotatory pressing of cross groove 11 simultaneously, be convenient for install and dismantlement, convenient to use, improve work efficiency.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a fastening screw with auto-lock structure, includes screw main part (1), its characterized in that: the top of screw main part (1) is equipped with screw kicking block (2), the inside of screw main part (1) and screw kicking block (2) is equipped with from locking lever (3) through the inner space that link up and offer, the top of auto-lock lever (3) is equipped with limiting plate (4), the top of limiting plate (4) is equipped with promotes lid (5), resilience groove (6) have been seted up to the center department at screw kicking block (2) top, the bottom of limiting plate (4) is equipped with compression spring (7), the surface of auto-lock lever (3) is equipped with a plurality of dead lever (8), the top of dead lever (8) is equipped with stopper (9), the surface of screw main part (1) has thread groove (101), a plurality of through-holes (102) have been seted up on the surface of thread groove (101).

2. The fastening screw with self-locking structure according to claim 1, wherein: the bottom of the screw main body (1) is provided with a screw head (10).

3. The fastening screw with self-locking structure according to claim 1, wherein: a cross groove (11) is formed in the center of the top of the pushing cover (5).

4. The fastening screw with self-locking structure according to claim 1, wherein: the bottom of the compression spring (7) is connected with the bottom of the inner wall of the rebound groove (6).

5. The fastening screw with self-locking structure according to claim 1, wherein: the section of the rebound groove (6) is in a convex shape.

6. The fastening screw with self-locking structure according to claim 1, wherein: the diameter of the top of the rebound groove (6) is smaller than that of the limiting plate (4).

7. The fastening screw with self-locking structure according to claim 1, wherein: the diameter of the top of the rebound groove (6) is larger than that of the pushing cover (5).

8. The fastening screw with self-locking structure according to claim 1, wherein: the top of the limiting block (9) is provided with a friction material (12).

9. The fastening screw with self-locking structure according to claim 1, wherein: the through hole (102) and the limiting block (9) are mutually matched, and the limiting block (9) penetrates through the through hole (102).