CN201065880Y

CN201065880Y - Anti-loosen bolt and screw nut subassembly

Info

Publication number: CN201065880Y
Application number: CNU2007201242728U
Authority: CN
Inventors: 刘胜忠
Original assignee: LIU SHENGZHONG ZHANG YONGMEI
Current assignee: LIU SHENGZHONG ZHANG YONGMEI
Priority date: 2007-05-18
Filing date: 2007-05-18
Publication date: 2008-05-28
Anticipated expiration: 2017-05-18

Abstract

The utility model discloses an anti-loosen bolt and nut component, which comprises a bolt and a nut. A plurality of torsion springs are respectively arranged on the cylinders of the bolt and the nut, and the other end of the torsion spring is matched with the locking hole on a fastened piece. The utility model has the advantages that the design is rational, the implementation is easy, the loosening and even dropping phenomenon produced on the bolt and the nut can be prevented under the long-term operation, and the loss and various accidents caused by the loosening and even dropping phenomenon can be avoided.

Description

Chek bolt, nut assembly

Technical field

The utility model relates to a kind of threaded fastener assembly, particularly relates to a kind of bolt and nut that can effectively prevent and produces chek bolt, nut assembly loosening so that come off.

Background technique

As everyone knows, bolt and nut is a kind of fastening piece that is widely used on the devices such as machinery equipment, railway, bridge, household electrical appliances, Aeronautics and Astronautics, steamer, automobile, though common bolt and nut component has advantage simple in structure, easy to use, but also there is easily loosening deficiency, particularly when component that it connected are in the workpiece environment of continuous shaking for a long time, the thing that produces loose or dislocation between the bolt and nut just occurs repeatedly, light then influence the proper functioning of device, heavy then cause major accident, cause heavy losses for people's lives and properties.In view of this, people have thought that thousand and one way solves the problem of bolt and nut loose or dislocation, be the elasticity floor clip and use maximum, but this floor clip prevent that the effect of nut loosening is limited, and being difficult to guarantee also can be as before fastening under long-term vibration environment.

Summary of the invention

Even it is a kind of also stable under the working environment of long-term, vibration that technical problem to be solved in the utility model is to provide, can not make nut produce chek bolt, the nut assembly of loose or dislocation.

The technological scheme that the utility model adopted is: a kind of subassembly of lock bolt, its key is: at bolt head one section cylindrical body is arranged, internal diameter is housed on cylindrical body is slightly smaller than cylindrical torsion spring, the other end of this torsion spring is pinned by relative static parts with this chek bolt, when bolt is tightened rotation toward the clockwise direction, the frictional force that the cylindrical body of bolt head and torsion spring produce is loosened torsion spring to reduce friction, bolt can rotate smoothly, in case after tightening, when bolt rotates to counter clockwise direction, the frictional force that the cylindrical body of bolt head and torsion spring produce tightens torsion spring, friction increases embraces bolt, makes it and can not rotate counterclockwise, and bolt can not become flexible so that come off, have only by after the release, rotating counterclockwise of bolt could be carried out smoothly.

A kind of anti-loosen screw nut component, its key is: one section cylindrical body is arranged on nut, internal diameter is housed on cylindrical body is slightly smaller than cylindrical torsion spring, the other end of this torsion spring is pinned by relative static parts with this lock nut, when nut is tightened rotation toward the clockwise direction, the frictional force that cylindrical body on the nut and torsion spring produce is loosened torsion spring to reduce friction, bolt can rotate smoothly, in case after tightening, when bolt rotates to counter clockwise direction, the frictional force that cylindrical body on the nut and torsion spring produce tightens torsion spring, friction increases embraces nut, makes it and can not rotate counterclockwise, and nut can not become flexible so that come off, have only by after the release, rotating counterclockwise of nut could be carried out smoothly.

Beneficial effect: the utlity model has characteristics such as reasonable in design, that enforcement is easy, it can effectively prevent becoming flexible of the long-term down bolt and nut generation of using of the working environment that vibrates so that obscission has been avoided loss that therefore brings and various accident.

Description of drawings

Fig. 1 is the subassembly of lock bolt structural representation;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the anti-loosen screw nut component structural representation;

Fig. 4 is the plan view of Fig. 3;

Fig. 5 anti-loosen screw nut component cooperates schematic representation with the bolt that is provided with locked groove.

Fig. 6 is the plan view of Fig. 5.

1. torsion springs among the figure, 2. torsion spring, 3. torsion spring, 4. lockhole, 5. locked groove, 6. nut, 7. bolt, 8. bolt, 9. fastener.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

Embodiment 1

As Fig. 1, shown in Figure 2, the utility model subassembly of lock bolt, comprise dextrorotation bolt (7), left-handed torsion spring (1), torsion spring (1) frictionally entangles bolt (7) cylindrical body, the other end of torsion spring (1) is locked in the lockhole (4) of fastener (9), when being screwed into bolt (7), bolt (7) is tightened rotation toward the clockwise direction, the frictional force of bolt (7) head cylindrical body and torsion spring (1) is loosened torsion spring (1), and friction reduces, bolt (7) can rotate smoothly, in case after tightening, bolt (7) cylindrical body end face contacts with fastener (9), bolt (7) is when counter clockwise direction is rotated, the frictional force of bolt (7) cylindrical body and torsion spring (1) tightens torsion spring (1), friction increases embraces bolt (7), makes it and can not rotate counterclockwise, and bolt (7) can not become flexible so that come off, have only by release in the time of need back-outing bolt (7), being held by lock of torsion spring (1) pulled out lockhole (4), and rotating counterclockwise of bolt (7) could be carried out smoothly, and bolt (7) is back-outed.

Embodiment 2

As Fig. 3, shown in Figure 4, the utility model anti-loosen screw nut component, comprise right-handed nut (6), dextrorotation torsion spring (2), torsion spring (2) frictionally entangles nut (6) cylindrical body, the other end of torsion spring (2) is locked in the lockhole (4) of fastener (9), when being screwed into nut (6), nut (6) is tightened rotation toward the clockwise direction, the frictional force of nut (6) cylindrical body and torsion spring (2)., torsion spring (2) is loosened, friction reduces, nut (6) can rotate smoothly, in case after tightening, nut (6) cylindrical body end face contacts with fastener (9), nut (6) is when counter clockwise direction is rotated, the frictional force of nut (6) cylindrical body and torsion spring (2) tightens torsion spring (2), friction increases embraces nut (6), makes it and can not rotate counterclockwise, and nut (6) can not become flexible so that come off, have only by release in the time of need back-outing nut (6), being held by lock of torsion spring (2) pulled out lockhole (4), and rotating counterclockwise of nut (6) could be carried out smoothly, and nut (6) is back-outed.

Embodiment 3

As Fig. 5, shown in Figure 6, the utility model anti-loosen screw nut component cooperates schematic representation with the bolt that is provided with locked groove, comprise right-handed nut (6), be provided with the dextrorotation bolt (8) of locked groove, left-handed torsion spring (3), torsion spring (3) frictionally entangles nut (6) cylindrical body, the other end of torsion spring (3) is locked in the locked groove (5) of bolt (8), in locked groove (5), being slided of torsion spring (3) by the lock end, when being screwed into nut (6), nut (6) is tightened rotation toward the clockwise direction, the frictional force of nut (6) cylindrical body and torsion spring (3), torsion spring (3) is loosened, friction reduces, nut (6) can rotate smoothly to be tightened, nut (6) is when counter clockwise direction is rotated, the frictional force of nut (6) cylindrical body and torsion spring (3) tightens torsion spring (3), friction increases embraces nut (6), make it and to rotate counterclockwise, nut (6) can not become flexible so that come off, have only by release in the time of need back-outing nut (6), being held by lock of torsion spring (3) pulled out locked groove (5), rotating counterclockwise of nut (6) could be carried out smoothly, and nut (6) is back-outed.

Claims

1. a subassembly of lock bolt comprises bolt, it is characterized in that: be provided with cylindrical body at bolt head, this cylindrical body is with torsion spring, and the other end of torsion spring is pinned by the parts that this chek bolt is static relatively.

2. according to claims 1 described subassembly of lock bolt, it is characterized in that: torsion spring pins by the lockhole of parts.

3. according to claims 1 described subassembly of lock bolt, it is characterized in that; Torsion spring pins by the boss of parts.

4. according to claims 1 described subassembly of lock bolt, it is characterized in that; Torsion spring pins by the locked groove of parts.

5. an anti-loosen screw nut component comprises nut, it is characterized in that: be provided with cylindrical body on nut, this cylindrical body is with torsion spring, and the other end of torsion spring is pinned by the parts that this lock nut is static relatively.

6. according to claims 5 described anti-loosen screw nut components, it is characterized in that: torsion spring pins by the lockhole of parts.

7. according to claims 5 described anti-loosen screw nut components, it is characterized in that: torsion spring pins by the boss of parts.

8. according to claims 5 described anti-loosen screw nut components, it is characterized in that: torsion spring pins by the locked groove of parts.