CN213235762U

CN213235762U - Anti-loosening fastener capable of stabilizing torque coefficient

Info

Publication number: CN213235762U
Application number: CN202021808059.0U
Authority: CN
Inventors: 何高峰; 李洪升; 任忠良; 熊裕军
Original assignee: Shanghai Detroit Precision Fastener Co Ltd
Current assignee: Shanghai Detroit Precision Fastener Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-05-18
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a locking fastener capable of stabilizing torque coefficient, which comprises a nut and a gasket, wherein the bottom surface of the nut is contacted with the gasket; the upper surface of the gasket contacted with the nut is divided into a plane and an arc surface according to the shape, and the inner ring of the plane is integrally connected along the outer ring of the arc surface; the surface of the gasket in contact with the nut is set to be a plane and an arc surface, so that the gasket can generate an automatic deviation rectifying function in the use or test process, the concentricity of the screw and the nut, the internal thread of the screw and the nut and the verticality of the gasket are ensured, the consistency during each installation or test is kept, and the torque coefficient dispersion is reduced.

Description

Anti-loosening fastener capable of stabilizing torque coefficient

Technical Field

The utility model relates to a nut gasket technical field, specific theory relates to a can stabilize torque coefficient's locking fastener.

Background

Due to the special shirttail profile, it is sensitive to friction between the washer and the nut. The contact of the nut and the gasket is an arc surface, the nut and the gasket are integrated through pressing, the nut and the gasket are integrated and can be easily rotated after the nut is fixed. In the process of each installation or test of the arc-shaped contact surface, when tensile force is axially applied, automatic deviation rectification cannot be realized, and the center between the nut and the bolt is not concentric easily in each installation test or use, so that the dispersion difference of the torque coefficient is easily amplified.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a locking fastener which can stabilize the torque coefficient.

A looseness-proof fastener capable of stabilizing torque coefficients comprises a nut and a gasket, wherein the gasket is matched and padded under the nut, and the nut is in contact with the upper surface of the gasket; the upper surface of the gasket mainly comprises a plane and an arc surface, the plane is arranged outside, the arc surface is arranged inside, and the plane inner ring is integrally connected along the outer ring of the arc surface.

By the preferable proposal of the utility model, the angle between the cambered surface and the central axis of the gasket is 15-15.5 degrees.

By the utility model discloses a preferred scheme, the width of plane board and cambered surface is the same.

By the utility model discloses a preferred scheme, the junction of plane and cambered surface flushes with the plane top surface.

The utility model has the advantages that: the contact surface of the nut and the gasket is set to be the combination of the plane and the cambered surface, the cambered surface can generate an automatic deviation rectifying function in the use or test process, the plane can ensure the concentricity of the screw and the nut, the internal threads of the screw and the nut and the verticality of the screw and the nut and the gasket, the consistency during each installation or test is kept, and the torque coefficient dispersion is reduced.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic diagram of the main body of the present invention:

FIG. 2 is a coupling view of a nut and a flat washer;

FIG. 3 is a connection diagram of a nut and a shim shoe;

wherein: nut 1, plane 2, cambered surface 3.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The figures are simplified schematic diagrams illustrating the basic structure of the invention in a schematic way only, and therefore they show only the components relevant to the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The anti-loose fastener capable of stabilizing the torque coefficient comprises a nut 1 and a gasket, wherein the gasket is matched and cushioned below the nut, and the nut is contacted with the upper surface of the gasket; the upper surface of the gasket mainly comprises a plane 2 and an arc surface 3, wherein the plane 2 is arranged outside, the arc surface 3 is arranged inside, inner rings of the plane 2 are integrally connected along an outer ring of the arc surface 3, and the angle between the arc surface 3 and the central axis of the gasket is controlled to be 15-15.5 degrees.

Comparative example 1

As shown in fig. 2, if the gasket is a plane, although the consistency of the axial bolt during installation at every time is maintained, automatic deviation correction cannot be realized, namely, the screw must be installed in the vertical direction of the gasket, but the installation in the actual installation cannot be guaranteed in the complete vertical direction, so repeated installation is required, the installation efficiency is low, and the special tooth shape must be firmly applied, the friction between the gasket and the nut is sensitive, the gasket of the plane plate cannot rotate, and the bolt stabilizing effect can be influenced to a certain extent.

Comparative example 2

As shown in fig. 3, if the whole gasket is a cambered surface, the gasket can be rotated, the bolt stability of the special tooth shape is guaranteed, and the automatic deviation rectifying function can be realized, i.e. the screw is not required to be installed in the direction perpendicular to the gasket, although the installation efficiency is improved, the installation precision cannot be guaranteed, the scattered difference of the torque coefficient value is enlarged, and if the angle of the installation screw is too large as the offset angle of the gasket, the screw cannot be guaranteed to be accurately installed in the pre-installation hole.

Therefore based on two above-mentioned comparative examples, the utility model discloses set the gasket outer lane to plane 2, the inner circle sets to cambered surface 3, can combine the advantage of plane 2 and 3 gaskets of cambered surface, can realize the automatic function of rectifying of screw through cambered surface 3, restricts through plane 2 simultaneously, prevents that screw and gasket angle from too squinting, not only can guarantee installation accuracy and bolt steadiness, also can improve the installation effectiveness simultaneously.

The width of the plane plate is the same as that of the cambered surface 3, and the width of the plane plate and the cambered surface are respectively half of the width of the upper surface of the gasket; the automatic deviation rectifying range of the arc surface 3 can be limited by limiting the widths of the plane 2 and the arc surface 3.

The junction of plane 2 and cambered surface 3 flushes with 2 top surfaces of plane, and then can guarantee that the bolt passes through the gasket and realizes the fastening effect.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A looseness-proof fastener capable of stabilizing torque coefficient comprises a nut (1) and a gasket, wherein the gasket is padded under the nut (1), and the nut (1) is in contact with the upper surface of the gasket; it is characterized in that; the upper surface of the gasket mainly comprises a plane (2) and an arc surface (3), wherein the plane (2) is arranged outside the arc surface, the arc surface is arranged inside the plane, and the inner ring of the plane (2) is integrally connected with the outer ring of the arc surface (3).

2. A torque coefficient stabilizable looseness-prevention fastener according to claim 1, wherein: the angle between the cambered surface (3) and the central axis of the gasket is 15-15.5 degrees.

3. A torque coefficient stabilizable looseness-prevention fastener according to claim 1, wherein: the width of the plane (2) is the same as that of the cambered surface (3).

4. A torque coefficient stabilizable looseness-prevention fastener according to claim 1, wherein: the joint of the plane (2) and the cambered surface (3) is flush with the top surface of the plane (2).