CN106194966B

CN106194966B - The fastener that anti-nut falls off

Info

Publication number: CN106194966B
Application number: CN201610876624.9A
Authority: CN
Inventors: 苗超
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-10-08
Filing date: 2016-10-08
Publication date: 2018-12-07
Anticipated expiration: 2036-10-08
Also published as: CN106194966A

Abstract

The present invention relates to a kind of fastener that anti-nut falls off, including screw bolt and nut, nut is equipped with screw hole, and internal screw thread is equipped in screw hole, has M a along its axial groove on bolt；Returning the car on the screw hole of nut has an arc-shaped slot, has N number of V-arrangement tooth socket along nut axial direction in arc-shaped slot；Be placed with locking bar in groove, the locking bar includes locking bar ontology and V-arrangement lock tooth, the width of the locking bar ontology and groove it is of same size, V-arrangement locks tooth position in locking bar ontology side, and V-arrangement lock tooth is meshed with V-arrangement tooth socket.After nut is installed in place, be inserted into bolt indentation locking bar can lock nut, loosen nut can not, prevent nut from falling off, if necessary to dismantle nut, can normally dismantle nut after locking bar is taken out.

Description

The fastener that anti-nut falls off

Technical field

The present invention relates to a kind of fastener, especially a kind of fastener that anti-nut falls off.

Background technique

Fastener is indispensable necessity during we live, for flexibly fixing two objects, but for example Often there is the case where nut loosening then falls off in the applications such as automobile, heavy construction machinery and factory, causes dangerous situation to take place frequently, pole The earth threatens the safety of life and property of people.

Summary of the invention

Of the existing technology in order to solve the problems, such as, the present invention provides a kind of fastener that anti-nut falls off, the fastener After nut is installed in place, be inserted into bolt indentation locking bar can lock nut, loosen nut can not, prevent spiral shell Mother falls off, and if necessary to dismantle nut, can normally dismantle nut after locking bar is taken out.

The present invention adopts the following technical scheme: the fastener that anti-nut falls off, including screw bolt and nut, nut are equipped with spiral shell Hole, screw hole is interior to be equipped with internal screw thread, has the M grooves along its axial direction, M >=1 on bolt；Returning the car on the screw hole of nut has an arc Shape notch, arc-shaped slot is interior to have N number of V-arrangement tooth socket along nut axial direction, N >=2；Locking bar, the lock are placed in groove Determining item includes that locking bar ontology and V-arrangement lock tooth, the width of the locking bar ontology and of same size, the V-arrangement lock tooth position of groove In locking bar ontology side, V-arrangement locks tooth and is meshed with V-arrangement lock tooth.

After nut and bolt being installed in place when use, be inserted into locking bar, and make the V-arrangement of locking bar from the groove of bolt Lock tooth is caught in one of V-arrangement tooth socket, and locking bar is entirely pushed into groove, since V-arrangement lock tooth is stuck in nut, locking bar Ontology is stuck in the groove of bolt, to limit the relative rotation of nut and bolt, there is screw thread limitation between nut and bolt again Its opposite sliding, so nut loosening can be prevented, or even falls off from bolt；When needing to dismantle nut, it is only necessary to from groove Middle extraction locking bar, can normally dismantle nut.

Preferably, in order to make no matter nut rotation how much, can the locking of enough locking bars, i.e. locking bar ontology is inserted into groove When middle, V-arrangement lock tooth is engaged with one of V-arrangement tooth socket, it is assumed that the angle of the line in the section center of circle of groove and bolt is α, phase The angle of the line in the section center of circle of adjacent V-arrangement gullet base and hex nut is β, M* [α+(2N-2) β] >=360 °, M >=2, N >= 3。

As one embodiment of the present of invention, one end of locking bar ontology also has handle, facilitate locking bar is put into it is recessed Slot takes out from groove.

Detailed description of the invention

Fig. 1 is the perspective view of the nut for the fastener that the anti-nut of the present invention slides.

Fig. 2 is the perspective view for the fastener that the anti-nut of the present invention slides.

Fig. 3 is the perspective view of the locking bar for the fastener that the anti-nut of the present invention slides.

Fig. 4 is the sectional view of the bolt for the fastener that the anti-nut of the present invention slides.

Fig. 5 is the sectional view of the nut for the fastener that the anti-nut of the present invention slides.

Specific embodiment

The embodiment of the present invention is described specifically with reference to the accompanying drawing:

The fastener that anti-nut slides, as Figure 1-Figure 5, including bolt 10, hex nut 20 and locking bar 30, spiral shell Along its axial groove 11 there are three having on bolt 10；Hex nut 20 is equipped with screw hole 21, is equipped with internal screw thread, screw hole in screw hole 21 Returning the car on 21 has an arc-shaped slot, and the arc-shaped slot is corresponding with an angle of hex nut 20, tool in arc-shaped slot There are 12 V-arrangement tooth sockets 22 along hex nut axial direction；Locking bar 30 includes locking bar ontology 31, V-arrangement lock tooth 32 and handle 33, V-arrangement lock tooth 32 is located at 31 side of locking bar ontology, as needed, can be left side, is also possible to right side, and V-arrangement locks tooth 32 and V-arrangement Tooth socket 22 can be intermeshed；The width of locking bar ontology 31 is of same size with groove 11, and handle 33 is located at locking bar ontology 31 one end, to facilitate the insertion groove 11 of locking bar 30 or be taken out from groove 11.

After hex nut 20 and bolt 10 being installed in place when use, be inserted into locking bar 30 from the groove 11 of bolt 10, And so that the V-arrangement of locking bar 30 is locked tooth 32 and be caught in one of V-arrangement tooth socket 22, locking bar 30 is entirely pushed into groove 11, by It is stuck in hex nut 20 in V-arrangement lock tooth 32, locking bar ontology 31 is stuck in the groove 11 of bolt 10, to limit hex nut 20, with the relative rotation of bolt 10, prevent hex nut 20 from loosening, or even fall off from bolt 10；Need to dismantle hex nut 20 When, it is only necessary to it extracts locking bar 30 out from groove 11, can normally dismantle.

As a preferred embodiment of the present invention, the line in the section center of circle of the groove 11 and bolt 10 of the present embodiment Angle α=30 °, angle β=5 ° of the line in the section center of circle of adjacent 22 bottom of V-type tooth socket and hex nut 20, then M* [α+(2N- 2) β] >=360 °, that is, no matter hex nut 20 rotation how much, always have a V-arrangement tooth socket 22 Chong Die with groove 11, can make to be located at The V-arrangement lock tooth 32 of locking bar 30 in groove 11 is caught in wherein in V-arrangement tooth socket 22, to limit bolt 10 and hexagonal spiral shell The relative rotation of mother 20, prevents nut 20 from falling off.

The foregoing is merely a specific embodiment of the invention, and not limitation of the present invention, all using of the invention Equivalent transformation made by mentality of designing and principle, is applied directly or indirectly in other relevant technical fields, and similarly includes In scope of patent protection of the invention.

Claims

1. the fastener that anti-nut falls off, including screw bolt and nut, nut is equipped with screw hole, and internal screw thread is equipped in screw hole, special Sign is: with M along its axial groove, M >=1 on bolt；Returning the car on the screw hole of nut has an arc-shaped slot, arc groove There are N number of V-arrangement tooth socket along nut axial direction, N >=2 in mouthful；Locking bar is placed in groove, the locking bar includes locking bar Ontology and V-arrangement lock tooth, the width of the locking bar ontology and groove it is of same size, V-arrangement locks tooth position in locking bar ontology one Side, V-arrangement lock tooth are meshed with V-arrangement tooth socket；

The angle of the line in the section center of circle of groove and bolt is α, the section center of circle of adjacent V-arrangement gullet base and hex nut The angle of line is β, M* [α+(2N-2) β] >=360 °.

2. the fastener that anti-nut according to claim 1 falls off, it is characterised in that: one end of locking bar ontology also has Handle.