CN209164337U

CN209164337U - A kind of New anti-loose screw

Info

Publication number: CN209164337U
Application number: CN201822041860.6U
Authority: CN
Inventors: 张永安
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-07-26
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses a kind of New anti-loose screws, including main screw and nut, the main screw and nut engagement connection, the main screw axial direction is provided with through hole, the through hole internal messing is connected with secondary screw, the nut is double-layer structure, and the secondary screw engages connection with nut through main screw, the main screw surface is equipped with positive silk screw thread, the pair screw is equipped with anti-silk screw thread, and the double-layer structure of the nut includes the anti-silk screw thread engaged with secondary screw positioned at internal layer, and the positive silk screw thread engaged with main screw positioned at outer layer, the cooperation that the utility model passes through positive and negative silk, make two screw connections to together, be allowed to can neither clockwise can not be counterclockwise random rotate play the locking effect of anticreep, and the accuracy of manufacture is of less demanding, it is simple at low cost, be conducive to industrial application and popularization.

Description

A kind of New anti-loose screw

Technical field

The utility model relates to technical field of fastening, specially a kind of New anti-loose screw.

Background technique

Fastener is to be fastenedly connected with and apply extremely wide a kind of machine components.Fastener, it is wide using industry It is general, including the energy, electronics, electric appliance, machinery, chemical industry, metallurgy, mold, hydraulic etc. industry, wherein screw is the most common fastening Part is known.Screw is used to connect in most cases the various components of fastening, is that comparison is firm under normal circumstances, But when being used on some components that will appear vibration, movement, it is possible to will cause loosening, cause connection unstable.It is existing anti- Loosening the screw a little is much to have coating in the screw thread applied atop of screw, is loosened by increasing frictional force realization, the purpose of anti-back, but real Effect and unstable in the application process of border.For this purpose, proposing a kind of New anti-loose screw

Utility model content

The purpose of this utility model is to provide a kind of New anti-loose screws, to solve mentioned above in the background art ask Topic.

To achieve the above object, the utility model provides the following technical solutions: a kind of New anti-loose screw, including main screw And nut, the main screw and nut engagement connection, the main screw axial direction are provided with through hole, the through hole internal messing It is connected with secondary screw, the nut is double-layer structure, and the secondary screw engages connection, the main spiral shell with nut through main screw Silk table face is equipped with positive silk screw thread, and the pair screw is equipped with anti-silk screw thread, and the double-layer structure of the nut includes being located at internal layer The anti-silk screw thread engaged with secondary screw, and the positive silk screw thread engaged with main screw positioned at outer layer.

Preferably, the top side wall of the secondary screw is provided with through-hole, and the bolt head of the main screw is arranged with and through-hole pair The pin hole answered, and the through-hole is connected with pin hole by pin.

Preferably, the bolt head of the main screw is in hexagon, and the quantity of the pin hole is 6.

Preferably, the length of the secondary screw is greater than main screw.

Preferably, the shape of the through-hole is round or oval.

Preferably, the shape of the through-hole is circle, when being flush at the top of the two after the pair screw is engaged with main screw The position of through-hole and pin hole, which is overlapped, to be corresponded to.

Preferably, the top of the secondary screw is equipped with flat recess.

Preferably, the bottom of the secondary screw is wedge shape.

Compared with prior art, the utility model has the beneficial effects that the utility model passes through main screw and secondary screw Setting, and linked together by way of screw thread, allow main screw and secondary screw to nibble simultaneously with nut by the nut of layer structure Close, and between be by way of positive and negative silk engagement rotate nut will not easily when vibration, in addition cooperate again Pin passes through pin hole and through-hole for main screw and secondary screw connection, and the further connection relationship reinforced between the two is allowed to nothing Method relatively rotates, so that realizing nut will not loosen from main screw because the reasons such as vibrating, shaking, the utility model structure is skilful Wonderful, the accuracy of manufacture is of less demanding, and simple production process is at low cost, is conducive to industrial application and popularization.

Detailed description of the invention

Fig. 1 is the assembled state figure of the utility model；

Fig. 2 is the explosive view of the utility model；

Fig. 3 is the main screw sectional view of the utility model；

Fig. 4 is the nut sectional view of the utility model；

Fig. 5 is the top structure schematic diagram of the secondary screw of the utility model.

In figure: 1, main screw, 2, nut, 3, secondary screw, 4, through hole, 5, through-hole, 6, pin hole, 7, pin.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-5, the utility model provides a kind of technical solution: the utility model using main screw 1 and nut 2 as The integral outer form of main element, main screw 1 is not different with conventional screw, and difference is the axial direction of main screw 1 It is provided with through hole 4, it with through hole 4 is engaged using anti-silk form that 4 internal messing of through hole, which has a secondary screw 3 and secondary screw 3, , the screw thread outside main screw 1 is positive silk and engages connection with nut 2, and the nut 2 is double-layer structure and the secondary spiral shell Silk 3 engages connection with nut 2 through main screw 1, and the double-layer structure of the nut 2 includes nibbling with secondary screw 3 positioned at internal layer The anti-silk screw thread closed, and the positive silk screw thread engaged with main screw 1 positioned at outer layer.

Specifically in order to make the connection relationship of form stable between main screw 1 and secondary screw 3, the top of the pair screw 3 Side wall is provided with through-hole 5, and the bolt head of the main screw 1 is arranged with pin hole 6 corresponding with through-hole 5, and the through-hole 5 and pin hole 6 It is connected by pin 7, the connection type of pin 7 and through-hole 5, pin hole 6 can be interference fit.

Specifically, the bolt head of the main screw 1 is in hexagon, the quantity of the pin hole 6 is 6, pin hole 6 be it is multiple in this way It can be inserted into from multiple directions by pin 7, improve convenience.

Specifically, the length of the pair screw 3 is greater than main screw 1, thus after making secondary screw 3 be completely screwed into main screw 1 Bottom can be pierced by main screw 1 and engaged with nut 2.

Specifically, the shape of the through-hole 5 is round or oval, the size of the through-hole 5 can be greater than pin 7, only Guarantee that main screw 1 is cannoted rotate relative to each other with secondary screw 3 after being inserted into pin 7, and through-hole 5 can be set to ellipse (or Strip channel-shaped) in this way space it is bigger facilitate pin 7 be inserted into, the required precision of the production and processing of this product can be reduced, can be held The error born is bigger, as long as will not drop out easily after meeting pin 7 and the interference fit of pin hole 6.

It is specifically the opaque position for determining when through-hole 5 Yu pin hole 6 for convenience since this product is metalwork It is overlapped that insertion pin 7 is facilitated to be fixed, size setting when by manufacture processing guarantees the secondary screw 3 and master The position of through-hole 5 and pin hole 6, which is overlapped, when being flush at the top of the two after screw 1 engages corresponds to.

Secondary screw 3 is specifically screwed for convenience, and the top of the pair screw 3 is equipped with flat recess, and the secondary screw 3 Bottom be wedge shape, during there is guiding performance to make to screw more smoothly.

Working principle: the main screw 1 of the utility model is passed through on the component to be fastened, then in the bottom end of main screw 1 Screw on nut 2 by positive silk, the outer layer screw thread of nut 2 allowed to be engaged with main screw 1 to realizing fastening, then by secondary screw 3 from The through hole 4 of the bolt head of main screw 1 point is screwed into (attention is anti-silk herein), and secondary screw 3 is made gradually to be screwed into through hole 4 and make Secondary 3 bottom end of screw is pierced by from through hole 4 to be meshed with the anti-silk screw thread of 2 internal layer of nut, top and main screw when secondary screw 3 1 top flushes rear through-hole 5 and the positive good position of pin hole 6 is overlapped, and can be inserted into pin 7 at this time to make main screw 1 connect with secondary screw 3 Together, the fastening installation for originally loosening screw so can be realized.This product is used for some occasions for wanting anticreep, under normal circumstances The part dimension to be fastened be it is known, so the outer layer screw thread of nut 2 do not need to do it is too long, if the component ruler to be fastened It is very little variation it is bigger, the size of the outer layer threaded portion of nut 2 can be manufactured it is longer can meet demand.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of New anti-loose screw, including main screw (1) and nut (2), it is characterised in that: the main screw (1) and nut (2) engagement connection, main screw (1) axial direction are provided with through hole (4), and through hole (4) internal messing is connected with secondary spiral shell Silk (3), the nut (2) is double-layer structure, and the secondary screw (3) engages connection, institute with nut (2) through main screw (1) Main screw (1) surface is stated equipped with positive silk screw thread, the pair screw (3) is equipped with anti-silk screw thread, and the double-deck knot of the nut (2) Structure includes the anti-silk screw thread engaged with secondary screw (3) for being located at internal layer, and the positive silk engaged with main screw (1) positioned at outer layer Screw thread.

2. a kind of New anti-loose screw according to claim 1, it is characterised in that: the top side wall of the pair screw (3) Be provided with through-hole (5), the bolt head of the main screw (1) is arranged with pin hole (6) corresponding with through-hole (5), and the through-hole (5) and Pin hole (6) is connected by pin (7).

3. a kind of New anti-loose screw according to claim 2, it is characterised in that: the bolt head of the main screw (1) is in six Angular, the quantity of the pin hole (6) is 6.

4. a kind of New anti-loose screw according to claim 1, it is characterised in that: the length of the pair screw (3) is greater than Main screw (1).

5. a kind of New anti-loose screw according to claim 2, it is characterised in that: the shape of the through-hole (5) is circle Or ellipse.

6. a kind of New anti-loose screw according to claim 5, it is characterised in that: the shape of the through-hole (5) is circle, The position coincidence of through-hole (5) and pin hole (6) is corresponding when being flush at the top of the pair screw (3) and the two after main screw (1) engagement.

7. a kind of New anti-loose screw described in any claim in -6 according to claim 1, it is characterised in that: the pair spiral shell The top of silk (3) is equipped with flat recess.

8. a kind of New anti-loose screw according to claim 7, it is characterised in that: the bottom of the pair screw (3) is wedge Shape.