CN211715510U

CN211715510U - Anti-loosening screw assembly

Info

Publication number: CN211715510U
Application number: CN201922228325.6U
Authority: CN
Inventors: 宋伟栋
Original assignee: Shaoxing Sunny High Strength Fasteners Co ltd
Current assignee: Shaoxing Sunny High Strength Fasteners Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-10-20
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to the technical field of fasteners, in particular to a locking screw component, which comprises a fastening screw and a limiting screw, wherein a first screw hole vertical to the rod part is arranged on the rod part of the fastening screw, and the limiting screw is used for being in threaded connection with the first screw hole; the rod part of the limiting screw is symmetrically provided with a groove, a mounting plate is arranged in the groove, a return spring is arranged between the mounting plate and the bottom surface of the groove, one side of the mounting plate, which is far away from the bottom surface of the groove, is provided with a right-angle triangular limiting plate, the right-angle end of the right-angle triangular limiting plate faces to the nut part of the limiting screw, and the acute-angle end of the right-angle triangular limiting plate faces to the tail end of the rod part; when the return spring contracts, the right-angle triangular limiting plate just enters the groove. The advantages are that: the fastening screw and the limiting screw are matched to prevent the fastening screw from loosening.

Description

Anti-loosening screw assembly

Technical Field

The utility model relates to a fastener technical field especially relates to a locking screw subassembly.

Background

The screw connection has high standardization degree, is easy to disassemble, assemble and manufacture, and can adapt to various working conditions, thereby being widely applied. However, the bolt connection is often loosened after a long time of use due to various factors such as friction, vibration, temperature and the like, and the loosening of the bolt may affect the operation of the equipment and even cause danger.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking screw subassembly to reduce the not hard up problem of screw.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

the anti-loosening screw assembly comprises a fastening screw and a limiting screw, wherein a first screw hole perpendicular to the rod part is formed in the rod part of the fastening screw, and the limiting screw is in threaded connection with the first screw hole.

Furthermore, grooves are symmetrically formed in the rod part of the limiting screw, a mounting plate is arranged in each groove, a return spring is arranged between each mounting plate and the bottom surface of each groove, a right-angle triangular limiting plate is arranged on one side, away from the bottom surface of each groove, of each mounting plate, the right-angle end of each right-angle triangular limiting plate faces to the nut part of the limiting screw, and the acute-angle end of each right-angle triangular limiting plate faces to the tail end of the rod part of the limiting screw; when the return spring contracts, the right-angle triangular limiting plate just enters the groove.

Furthermore, the mounting panel is the arc and can seal the open end of recess just, the radian of mounting panel is the same with the outer wall radian of spacing screw pole portion.

Furthermore, the auxiliary dismounting device comprises a hollow auxiliary dismounting pipe with openings at two ends, and the caliber of the auxiliary dismounting pipe is the same as that of the first screw hole.

Furthermore, the nut parts of the fastening screw and the limiting screw are regular hexagonal prism-shaped.

Furthermore, the end surfaces of the nut parts of the fastening screw and the limiting screw are provided with a straight groove or a cross groove.

Furthermore, the outer walls of the screw cap parts of the fastening screw and the limiting screw are provided with anti-skid threads.

The utility model has the advantages that:

1. the fastening screw is matched with the limiting screw to prevent the fastening screw from loosening;

2. the right-angle triangle limiting plates on two sides of the rod part of the limiting screw can effectively prevent the limiting screw from loosening, and further prevent fastening bolts from loosening.

Drawings

FIG. 1 is a schematic view showing a fitting relationship between a fastening screw and a limit screw in embodiment 1;

FIG. 2 is a schematic three-dimensional structure of a setscrew according to example 2;

FIG. 3 is a schematic view showing a state in which a return spring of a setscrew is contracted in embodiment 2;

FIG. 4 is a schematic view showing a state in which a return spring of a setscrew is not contracted in embodiment 2;

fig. 5 is an exploded schematic view of a limiting screw and a right-angle triangular limiting plate in embodiment 2;

FIG. 6 is a schematic view showing the fitting relationship between a fastening screw and a limiting screw in embodiment 2;

FIG. 7 is a schematic view showing a state where a limit screw is removed from the removal-assist pipe in example 2;

description of the reference symbols

Fastening screw 1, limiting screw 2, screw one 3, recess 4, mounting panel 5, answer spring 6, right angle triangle limiting plate 7, help and tear open pipe 8, screw two 9, screw three 10, dismouting hole 11.

Detailed Description

The present invention will be described in further detail with reference to examples.

Example 1:

the present embodiment provides a locking screw assembly, as shown in fig. 1, including a fastening screw 1 and a limiting screw 2, a screw hole i 3 perpendicular to a rod portion is formed in the rod portion of the fastening screw 1, and the limiting screw 2 is used for being in threaded connection with the screw hole i 3. After the installation is finished, because the fastening screw 1 is limited by the limiting screw 2, unless the limiting screw 2 slides out of the first screw hole 3 due to looseness, the fastening screw 1 is difficult to loosen.

In order to facilitate screwing of the fastening screw 1 or the limiting screw 2, the nut portions of the fastening screw 1 and the limiting screw 2 are regular hexagonal prism-shaped, and the end faces of the nut portions of the fastening screw 1 and the limiting screw 2 are provided with straight grooves or cross grooves. Meanwhile, the outer walls of the nut parts of the fastening screw 1 and the limiting screw 2 are provided with anti-slip threads for further enhancing the friction force between the nut and the mounting part.

Example 2:

the principle of the embodiment is the same as that of the embodiment 1, but the embodiment 1 has the defect that when the limit screw 2 is loosened, the fastening screw 1 also has the risk of loosening, and the embodiment is improved aiming at the defect.

As shown in fig. 2 to 5, the rod portion of the limiting screw 2 of the present embodiment is symmetrically provided with a groove 4, a mounting plate 5 is arranged in the groove 4, a return spring 6 is arranged between the mounting plate 5 and the bottom surface of the groove 4, one side of the mounting plate 5 away from the bottom surface of the groove 4 is provided with a right-angled triangular limiting plate 7, a right-angled end of the right-angled triangular limiting plate 7 faces the nut portion of the limiting screw 2, and an acute-angled end of the right-angled triangular limiting plate 7 faces the end of the rod portion of the limiting screw; when the return spring 6 contracts, the right-angle triangular limiting plate 7 just enters the groove 4. And in order to make stop screw 2 more pleasing to the eye, mounting panel 5 is the arc and can seal the open end of recess 4 just, the radian of mounting panel 5 is the same with the outer wall radian of 2 pole portions of stop screw.

As shown in fig. 6, the first mounting part and the second mounting part are connected by the fastening screw 1 of the embodiment and are prevented from loosening by the limiting screw 2, the first mounting part and the second mounting part are provided with a vertically arranged screw hole two 9, the second mounting part is provided with a screw hole three 10 and a dismounting hole 11, the screw hole two 9 is used for connecting the fastening screw 1, the screw hole three 10 is used for connecting the limiting screw 2, the screw hole three 10 is the same as the screw hole one 3 in diameter, and the dismounting hole 11 is larger than the screw hole three 10 or the screw hole one 3 in diameter.

When the mounting device is mounted, the fastening screw 1 is screwed into the screw hole I3, so that the mounting piece I and the mounting piece II are connected together, and the screw hole III 10 is coaxial with the screw hole I3; the limiting screw 2 is screwed into the screw hole III 10 and the screw hole I3 at a time and enters the dismounting hole 11, due to the limitation of the screw hole III 10 and the screw hole I3, the right-angle triangular limiting plate 7 is compressed in the groove 4 when penetrating through the screw hole III 10 and the screw hole I3, and when entering the dismounting hole 11, the right-angle triangular limiting plate 7 is ejected out of the groove 4. At the moment, due to the limitation of the right-angle triangular limiting plate 7, the limiting screw 2 cannot be screwed out, so that the phenomenon that the limiting screw 2 slides out of the screw hole I3 due to looseness is avoided.

In order to facilitate the disassembly, the present embodiment further includes a hollow disassembly assisting tube 8 with openings at two ends, and the caliber of the disassembly assisting tube 8 is the same as that of the first screw hole 3. When dismantling stop screw 2, will help tearing open pipe 8 and insert dismouting hole 11 and cover on stop screw 2 exposes that part of screw one 3, because the design of right angle triangle limiting plate 7, help tearing open pipe 8 and embolia the in-process, right angle triangle limiting plate 7 can be impressed recess 4, can twist out stop screw 2 this moment.

The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the invention, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the invention.

Claims

1. A check screw assembly, characterized by: the screw rod fixing device comprises a fastening screw and a limiting screw, wherein a screw hole I vertical to the rod part is formed in the rod part of the fastening screw, and the limiting screw is used for being in threaded connection with the screw hole I; the rod part of the limiting screw is symmetrically provided with a groove, a mounting plate is arranged in the groove, a return spring is arranged between the mounting plate and the bottom surface of the groove, one side of the mounting plate, which is far away from the bottom surface of the groove, is provided with a right-angle triangular limiting plate, the right-angle end of the right-angle triangular limiting plate faces to the nut part of the limiting screw, and the acute-angle end of the right-angle triangular limiting plate faces to the tail end of the rod part; when the return spring contracts, the right-angle triangular limiting plate just enters the groove.

2. A check screw assembly as defined in claim 1, wherein: the mounting panel is the arc and can seal the open end of recess just, the radian of mounting panel is the same with the outer wall radian of spacing screw pole portion.

3. A check screw assembly as defined in claim 1, wherein: the auxiliary dismounting device comprises a hollow auxiliary dismounting pipe with openings at two ends, and the caliber of the auxiliary dismounting pipe is the same as that of the screw hole I.

4. A check screw assembly as defined in claim 1, wherein: the nut parts of the fastening screws and the limiting screws are regular hexagonal prism-shaped.

5. A check screw assembly as in claim 4, wherein: the end surfaces of the nut parts of the fastening screw and the limiting screw are provided with straight grooves or cross grooves.

6. A check screw assembly as defined in claim 1, wherein: and anti-skid threads are arranged on the outer walls of the screw cap parts of the fastening screw and the limiting screw.