CN204878258U

CN204878258U - Locking compound nut

Info

Publication number: CN204878258U
Application number: CN201520634257.2U
Authority: CN
Inventors: 张昌宾
Original assignee: Chong Ka Co Ltd Is Released In Jinan From Sufferings
Current assignee: Chong Ka Co Ltd Is Released In Jinan From Sufferings
Priority date: 2015-08-21
Filing date: 2015-08-21
Publication date: 2015-12-16
Anticipated expiration: 2025-08-21

Abstract

The utility model provides a locking compound nut, includes: set up in the gasket I and gasket II of nut lower extreme, the up end of gasket I and the contact of the ring flange lower extreme facial features of nut, the lower terminal surface of gasket II contacts with the surface by the fastening work piece, and the lower terminal surface of gasket I and the up end of gasket II are provided with a plurality of endocentric awl grooves of gradually opening each other respectively along the circumferencial direction. Because gasket I can rotate along nut direction of rotation with gasket II, and gasket I and gasket II superpose together about coincideing through gradually opening the awl groove. When the nut was screwed, the contact surface was under the condition of atress about it, and to nut and work piece formation indentation and pressure, acutely gasket I can be transmitted to the not hard up power to the nut that produces of vibration and atress, and two had the tapering gradually to open awl groove relative displacement to lead to gasket I and II gross thickness on the gasket to increase when I not hard up displacement meeting on the gasket made gasket I with II antiports on the gasket, and unable exceed the power of screwing up and the formation nut can not become flexible.

Description

A kind of locking compound nut

Technical field

The utility model relates to a kind of locking compound nut.

Background technique

What present most of mechanical connection generally adopted is add a spring washer under nut, its effect be nut produce loosen time, the elasticity of spring washer self causes the tension force of nut to reach anti-loosing effect, and the rebounding force of spring washer is limited, in judder and under impacting, its rebounding force can slowly lose efficacy and ineffective, causes nut and causes machine breakdown with answering fastening piece to occur loosening.

Summary of the invention

The utility model, in order to overcome the deficiency of above technology, provides the locking compound nut that a kind of nut to the position such as high vibration, brute force attack can not loosen.

The utility model overcomes the technological scheme that its technical problem adopts:

A kind of locking compound nut, comprise: the pad I and the pad II that are arranged at nut lower end, the upper-end surface of described pad I contacts with the flange plate lower end surface of nut, the lower end surface of described pad II contacts with the outer surface of fastened workpiece, the lower end surface of described pad I and the upper-end surface of pad II along the circumferential direction from the center of circle laterally extended have somely gradually open cone groove, describedly gradually open high and inclined-plane that the other end is low, cone one-tenth one end, groove relative level face, gradually opening gradually opening on cone groove and pad II on described pad I bores that groove is mutually identical to be installed, when nut is in tight condition, between pad I with pad II to superpose thickness minimum.

Loosen to prevent stating pad I opposing nut further and prevent the relatively fastened workpiece of pad II from loosening, the upper-end surface of above-mentioned pad I and the lower end surface of pad II are along the circumferential direction oblique is respectively provided with some saw shape teeth.

The beneficial effects of the utility model are: because pad I and pad II can rotate along nut sense of rotation, and pad I and pad II are that cone groove is identical to be superimposed together up and down by gradually opening.Therefore when the nut 34 is tightened, pad I and pad II relatively rotate, and gradually open cone groove for two and relatively rotate, and after nut torque reaches requirement, the cone peak of groove of gradually opening of pad I contacts with the minimum point of boring groove of gradually opening of pad II.Now the thickness of pad I and pad II is minimum.Upper and lower surface of contact is when stressed, impression and pressure are formed to nut 1 and workpiece, the loosening force to nut of high vibration and stressed generation (namely reverse power) can be delivered to pad I, pad I to loosen when displacement can make pad I and pad II rotate backward two to be had tapering gradually to hold the relative displacement of cone groove to cause pad I and pad II total thickness to increase, and thickness increase will produce the strength of tightening nut.Final result is in the absence of external forces, and the loosening force that vibration produces cannot exceed screwing force and form nut and can not loosen.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the main TV structure schematic diagram of pad of the present utility model;

In figure, 1. nut 2. pad I 3. pad II 4. is gradually opened cone groove 5. and is sawed shape tooth.

Embodiment

Be described further below in conjunction with accompanying drawing 1, accompanying drawing 2 pairs of the utility model.

A kind of locking compound nut, comprise: the pad I 2 and the pad II 3 that are arranged at nut 1 lower end, the upper-end surface of described pad I 2 contacts with the flange plate lower end surface of nut 1, the lower end surface of described pad II 3 contacts with the outer surface of fastened workpiece, the lower end surface of described pad I 2 and the upper-end surface of pad II 3 are along the circumferential direction extended laterally from the center of circle has some gradually opening to bore groove 4, describedly gradually open high and inclined-plane that the other end is low, cone one-tenth one end, groove 4 relative level face, the cone groove 4 gradually opened on described pad I 2 bore with gradually opening on pad II 3 that groove 4 is mutually identical to be installed, when nut 1 is in tight condition, between pad I 2 with pad II 3 to superpose thickness minimum.Because pad I 2 and pad II 3 can rotate along nut sense of rotation, and pad I 2 and pad II 3 are that cone groove 4 is identical to be superimposed together up and down by gradually opening.Therefore when nut 1 is tightened, pad I 2 and pad II 3 relatively rotate, and gradually open cone groove 4 for two and relatively rotate, and after nut 1 moment of torsion reaches requirement, the cone peak of groove 4 of gradually opening of pad I 2 contacts with the minimum point of boring groove 4 of gradually opening of pad II 3.Now the thickness of pad I 2 and pad II 3 is minimum.Upper and lower surface of contact is when stressed, impression and pressure are formed to nut 1 and workpiece, the loosening force to nut 1 of high vibration and stressed generation (namely reverse power) can be delivered to pad I 2, pad I 2 to loosen when displacement can make pad I 2 and pad II 3 rotate backward two to be had tapering gradually to hold the relative displacement of cone groove 4 to cause pad I 2 and pad II 3 total thickness to increase, and thickness increase will produce the strength of tightening nut 1.Final result is in the absence of external forces, and the loosening force that vibration produces cannot exceed screwing force and form nut 1 and can not loosen.

By the steel elasticity of spring washer, locking to become mechanical displacement locking by original nut for this technology, and the hardness of two pads is high, can be embedded into nut flange and workpiece below, plays easily tight not easily loose effect.

Further, the upper-end surface of the pad I 2 and lower end surface of pad II 3 is along the circumferential direction oblique is respectively provided with some saw shape teeth 5.Pad I 2 upper-end surface is by sawing the flange plate location contacts at shape tooth 5 position and nut 1 lower end, can prevent pad I 2 opposing nut 1 from rotating, pad II 3 lower end surface is contacted with fastened outer surface of workpiece by saw shape tooth 5 position and can prevent pad II 3 opposite piece outer surface from rotating, and further increases anti-loosing effect.

Claims

1. a locking compound nut, it is characterized in that, comprise: the pad I (2) and the pad II (3) that are arranged at nut (1) lower end, the upper-end surface of described pad I (2) contacts with the flange plate lower end surface of nut (1), the lower end surface of described pad II (3) contacts with the outer surface of fastened workpiece, the lower end surface of described pad I (2) and the upper-end surface of pad II (3) are along the circumferential direction extended laterally from the center of circle has some gradually opening to bore groove (4), describedly gradually open high and inclined-plane that the other end is low, cone one-tenth one end, groove (4) relative level face, cone groove (4) gradually opened on described pad I (2) bore with gradually opening on pad II (3) that groove (4) is mutually identical to be installed, when nut (1) is in tight condition, between pad I (2) with pad II (3) to superpose thickness minimum.

2. locking compound nut according to claim 1, is characterized in that: the upper-end surface of described pad I (2) and the lower end surface of pad II (3) are along the circumferential direction oblique is respectively provided with some saw shapes tooth (5).