CN111022441A

CN111022441A - Locking power adjustable rotary motion locking mechanism

Info

Publication number: CN111022441A
Application number: CN201911086591.8A
Authority: CN
Inventors: 傅家�; 王旭; 梁玲
Original assignee: Luoyang Institute of Electro Optical Equipment AVIC
Current assignee: Luoyang Institute of Electro Optical Equipment AVIC
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-04-17

Abstract

The invention relates to a locking force adjustable rotary motion locking mechanism, which realizes locking by inserting a locking component arranged at a moving end into a V-shaped groove of a V-shaped block arranged at a fixed end, wherein the end part of the locking component can stretch and contract, and the magnitude of the stretching force can be adjusted. The invention has the advantages that: simple structure is reliable, can adjust the size of locking power through simple operation to satisfy the difference of the locking requirement of different product rotary motion spare parts, be applicable to the locking between the rotary motion spare part, and have the function that the locking power size can be adjusted.

Description

Locking power adjustable rotary motion locking mechanism

Technical Field

The invention belongs to the field of structural design of airborne photoelectric detection equipment, and relates to a rotary motion locking mechanism with adjustable locking force, which is suitable for locking rotary motion parts and has the function of adjusting the locking force.

Background

Along with the rapid development of the aviation technology, the types of airborne photoelectric conversion detection equipment are more and more, and the locking requirements of different products on various internal rotary motion parts are inconsistent. If different products are designed with the locking mechanism separately, it is necessary to redesign and manufacture the locking mechanism once and again. The invention provides a universal locking mechanism with adjustable locking force, which meets the different locking requirements of rotary motion parts of different products.

Disclosure of Invention

Technical problem to be solved

In order to avoid the defects of the prior art, the invention provides a rotary motion locking mechanism with adjustable locking force, which aims to realize the locking between rotary motion parts and has the function of adjusting the locking force.

Technical scheme

A rotary motion locking mechanism with adjustable locking force is characterized by comprising a locking component 10, a moving end 20, a V-shaped block 30 and a fixed end 40; the locking component 10 comprises an adjusting screw 11, a fastening nut 12, a shell blocking cover 13, a spring blocking piece 14, a spring 15, a shell 16 and a locking head 17; the spring 15 is positioned in the shell 16, a spring stop 14 is arranged on the spring 15 at one end of the shell 16, and the shell blanking cover 13 is fixed on the spring stop 14 through a fastening nut 12 and an adjusting screw 11; the other end of the shell 16 is provided with a square groove, a bulge at one end of the cylindrical surface locking head 17 is arranged in the square groove, the rotation of the locking head 17 relative to the shell 16 is limited, and the locking head 17 is only allowed to slide along the axial direction of the round hole of the shell 16; the pressing force of the spring on the locking head 17 is adjusted by rotating the adjusting screw 11; a through hole in the center of the moving end 20 penetrates through a cylinder in the center of the fixed end 40 to form rotary connection, the V-shaped block 30 is fixed on the fixed end 40, and the cylindrical surface locking head 17 of the locking component 10 penetrates through the through hole in the moving end 20 and is fixed with the moving end 20; the radiuses of the locking component 10 and the V-shaped block 30 relative to the circle center are selected, so that the end cylindrical surface of the locking head 17 can fall into a V-shaped groove of the V-shaped block 30, and the mechanism becomes a locking state; when the driving force of the rotary motion is larger than the locking force, the end part of the locking head 17 slides along the inclined plane of the V-shaped groove of the V-shaped block 30, the locking head 17 is in a compressed state, and the mechanism is changed into an unlocking state until the locking head 17 is separated from the V-shaped groove of the V-shaped block 30.

The shell blanking cover 13 and the shell 16 are connected together through threads and are fastened through gluing.

Advantageous effects

According to the rotary motion locking mechanism with the adjustable locking force, the locking component arranged at the moving end is inserted into the V-shaped groove of the V-shaped block arranged at the fixed end to realize locking, the end part of the locking component can stretch out and draw back, and the size of the stretching force can be adjusted. The invention has the advantages that: simple structure is reliable, can adjust the size of locking power through simple operation to satisfy the difference of the locking requirement of different product rotary motion spare parts, be applicable to the locking between the rotary motion spare part, and have the function that the locking power size can be adjusted.

Drawings

FIG. 1: the invention relates to a schematic diagram of a rotary motion locking mechanism with adjustable locking force in a locking state

FIG. 2: the schematic diagram of the locking force adjustable slewing locking mechanism switching from the locking state to the unlocking state

FIG. 3: the invention discloses a schematic diagram of a rotary motion locking mechanism with adjustable locking force in an unlocking state

FIG. 4: the invention discloses an explosion schematic diagram of a rotary motion locking mechanism with adjustable locking force,

FIG. 5: schematic diagram of locking part in rotary motion locking mechanism with adjustable locking force

FIG. 6: the invention relates to a section schematic diagram of a locking part in a rotary motion locking mechanism with adjustable locking force

FIG. 7: the invention discloses an explosion schematic diagram of a locking part in a rotary motion locking mechanism with adjustable locking force

Wherein: 10-locking component, 20-moving end, 30-V-shaped block, 40-fixed end, 11-adjusting screw, 12-fastening nut, 13-blocking cover, 14-spring blocking piece, 15-spring, 16-shell and 17-locking head.

Detailed Description

The invention will now be further described with reference to the following examples and drawings:

the embodiment of the rotary motion locking mechanism with adjustable locking force comprises a locking component 10, a moving end 20, a V-shaped block 30 and a fixed end 40. The movable end 20 can perform a rotation movement relative to the fixed end 40, and the main function of the present invention is to lock and unlock the rotation movement, and the locking force can be adjusted.

The specific structure of the locking component is shown in fig. 4, 5, 6 and 7.

The locking component 10 comprises an adjusting screw 11, a fastening nut 12, a housing blocking cover 13, a spring blocking piece 14, a spring 15, a housing 16 and a locking head 17.

The housing 16 is a mounting base for the entire locking member 10.

One end of the shell 16 is provided with a round hole, and the cylindrical surface of the locking head 17 is arranged in the round hole in a small clearance fit mode; the cylindrical surface of the locking head 17 is provided with a protrusion, the circular hole of the shell 16 is provided with a square groove, and the protrusion and the square groove are matched together, so that the rotation of the locking head 17 relative to the shell 16 is limited, and the locking head 17 is only allowed to stretch along the axial direction of the circular hole. The portion of the locking head 17 inside the housing 16 has a flange to prevent the locking head 17 from coming out of the housing 16.

The housing cover 13 and the housing 16 are screwed together and fastened with a suitable amount of glue. The casing blanking cover 13 and the casing 16 jointly form a closed cavity, and a spring catch 14, a spring 15 and a locking head 17 are arranged in the cavity. In the chamber, one end of the spring 15 contacts the spring catch 14 and the other end contacts the locking head 17. The spring 15 is in a compression state when being installed, so that the locking head 17 can retract when being subjected to certain shafting force, and the elastic force of the spring 15 is designed according to the locking requirement.

The adjusting screw 11 is installed on the threaded hole of the housing blanking cover 13, one end of the adjusting screw 11 is propped against the spring catch 14, and the other end of the adjusting screw is provided with a straight groove, so that the adjusting screw 11 can be rotated by a tool conveniently used. The adjusting screw 11 adopts right-handed threads, the adjusting screw 11 is rotated clockwise, the spring catch 14 moves towards the interior of the cavity, the spring 15 is compressed, the pressing force of the spring on the locking head 17 is increased, and the locking force of the mechanism is increased; the adjusting screw 11 is rotated anticlockwise, so that the spring blocking piece 14 moves towards the outside of the cavity, the spring 15 extends, the pressing force of the spring on the locking head 17 is reduced, and the locking force of the mechanism is reduced. After the adjustment of the adjusting screw 11 is completed, the adjusting screw 11 is fastened by the fastening nut 12.

Locking part 10, moving end 20, V-shaped block 30 and fixed end 40. Wherein, the movable end 20 can perform a rotation motion relative to the fixed end 40 by: the locking member 10 is mounted on the moving end 20 by screws, and the V-block 30 is mounted on the fixed end 40 by screws. When the mechanism is in a locking state, the locking head 17 of the locking part 10 extends into the V-shaped groove of the V-shaped block 30. The end of the locking head 17 is arc-shaped, and the locking head 17 can be extended and retracted, when the driving force of the rotary motion is larger than the locking force, the end of the locking head 17 slides along the inclined plane of the V-shaped groove of the V-shaped block 30, the locking head 17 is in a compressed state, and the mechanism is changed into an unlocked state until the locking head 17 is separated from the V-shaped groove of the V-shaped block 30. When the mechanism is brought to the unlocked state by the action of the spring 15, the locking head 17 is in the extended state.

Claims

1. A rotary motion locking mechanism with adjustable locking force is characterized by comprising a locking component (10), a moving end (20), a V-shaped block (30) and a fixed end (40); the locking component (10) comprises an adjusting screw (11), a fastening nut (12), a shell blocking cover (13), a spring blocking piece (14), a spring (15), a shell (16) and a locking head (17); the spring (15) is positioned in the shell (16), a spring blocking piece (14) is arranged on the spring (15) at one end of the shell (16), and the shell blocking cover (13) is fixed on the spring blocking piece (14) through a fastening nut (12) and an adjusting screw (11); the other end of the shell (16) is provided with a square groove, a bulge at one end of the cylindrical surface locking head (17) is arranged in the square groove, the rotation of the locking head (17) relative to the shell (16) is limited, and the locking head (17) is only allowed to slide along the axial direction of the round hole of the shell (16); the pressing force of the spring on the locking head (17) is adjusted by rotating the adjusting screw (11); a through hole in the center of the moving end (20) penetrates through a cylinder in the center of the fixed end (40) to form rotary connection, the V-shaped block (30) is fixed on the fixed end (40), and a cylindrical surface locking head (17) of the locking component (10) penetrates through the through hole in the moving end (20) and is fixed with the moving end (20); the radii of the locking component (10) and the V-shaped block (30) relative to the circle center are selected, so that the end cylindrical surface of the locking head (17) can fall into a V-shaped groove of the V-shaped block (30), and the mechanism becomes a locking state; when the driving force of the rotary motion is larger than the locking force, the end part of the locking head (17) slides along the inclined plane of the V-shaped groove of the V-shaped block (30), the locking head (17) is in a compressed state until the locking head (17) is separated from the V-shaped groove of the V-shaped block (30), and the mechanism is changed into an unlocked state.

2. The rotary motion locking mechanism with adjustable locking force of claim 1, wherein: the shell blanking cover (13) and the shell (16) are connected together through threads and are glued and fastened.