CN2522664Y

CN2522664Y - Stop nut

Info

Publication number: CN2522664Y
Application number: CN 02215266
Authority: CN
Inventors: 朱达俊
Original assignee: Shanghai Detroit Precision Fastener Co Ltd
Current assignee: Shanghai Detroit Precision Fastener Co Ltd
Priority date: 2002-01-21
Filing date: 2002-01-21
Publication date: 2002-11-27
Anticipated expiration: 2012-01-21

Abstract

The utility model discloses a stop nut which is characterized in that: the top surface of the nut is opened with a narrow slot. During the manufacturing, the utility model is put upon a certain amount of force so as to properly change the screw pitch at the narrow slot of the nut; In this way, the free rotation of SPL nut or other nut before being locked up can be effectively prevented so as to avoid falling off of the nut due to force or vibration; in addition, the nut has the advantages of simple processing, stable quality, low cost, agreement to mass production and convenient installation and operation. The utility model does not change the strength and performance of the original SPL nut.

Description

A kind of screwed retaining ring

Technical field:

The utility model relates to the technical field of fastening piece, specifically a kind of nut of coming off of preventing.

Background technique:

Execute jail (hereinafter to be referred as SPL) nut to be the splendid nut of a kind of anti-loosening property of U.S. SPIRALOCK (U.S. execute must firm company) invention, it has changed the shape of conventional threads, make the stress distribution of screw rod even, overcome and caused the secondary loose problem that is threaded, obviously improved the secondary fatigue strength that is threaded, the SPL nut is used widely in fields such as U.S. spaceflight, automobiles, the SPL nut has entered since the China, also obtains user's favorable comment after sector applications such as railway, iron and steel, automobile petrochemical industry.But be to use the SPL nut, must moment in accordance with regulations install, if when mounted because of the reason of operator or torque spanner, make tightening torque be lower than the moment of minimum requirements, the SPL nut can not enter locking state, be in the SPL nut under this non-locking state, not only can not be locking, and after stressed or vibrations, may be in a kind of state of automatic turn, get loose than common nut is easier, for at automobile, some key positions on the train, in any case this situation does not allow to occur, even common nut also has the problem that occurs getting loose after stressed or vibrations.

Summary of the invention:

The purpose of this utility model is to provide a kind of screwed retaining ring, and it can prevent the caducous phenomenon that nut was produced before improper locking.

The technical solution of the utility model is achieved in that a kind of screwed retaining ring, and it mainly comprises nut, is arranged on the screw thread in the nut, it is characterized in that: open a narrow groove below the end face of nut.

During manufacturing the utility model is applied certain power, make the pitch appropriate change at the narrow groove place of nut, can prevent effectively that SPL nut or other nut from rotating freely before locking, and then avoided in obscission stressed or that vibrations occur later on, also to have processing technology simple for this nut in addition, steady quality, cost be low, be fit to produce in enormous quantities, characteristics easy to install, and do not change the intensity and the performance of former SPL nut.

Description of drawings:

Fig. 1 is the utility model one embodiment's a structural representation

Embodiment:

The utility model will be further described below in conjunction with drawings and Examples.

It mainly comprises nut 1 the utility model, be arranged on the screw thread in the nut 1, it is different from prior art and is: open a narrow groove 2 below the end face of nut 1, in the enforcement be below the end face of nut, radially open a narrow groove, the narrow slot pitch nut end face of being opened is the 0.5-8 millimeter, the width K of general narrow groove is the 0.2-3.5 millimeter, in order to guarantee the intensity of nut, the degree of depth of the narrow groove of opening is not touched the wall of opposite side nut, be generally the 1/3-7/8 of nut diagonal-size, to the A place application of force of nut in the accompanying drawing, the narrow groove that makes nut is the pitch appropriate change of notch portion, can prevent effectively that nut from getting loose, in screwing using process, do not damage screw flight, utilize its elasticity, can be repeatedly used.

Claims

1, a kind of screwed retaining ring, it mainly comprises nut, is arranged on the screw thread in the nut, it is characterized in that: open a narrow groove below the end face of nut.

2, by the described a kind of screwed retaining ring of claim 1, it is characterized in that: below the end face of nut, radially open a narrow groove.

3, by claim 1 or 2 described a kind of screwed retaining rings, it is characterized in that: narrow slot pitch nut end face is the 0.5-8 millimeter.

4, by claim 1 or 2 described a kind of screwed retaining rings, it is characterized in that: the width of narrow groove is the 0.2-3.5 millimeter.

5, by claim 1 or 2 described a kind of screwed retaining rings, it is characterized in that: the degree of depth of narrow groove is the 1/3-7/8 of nut diagonal-size.