CN1710297A

CN1710297A - Anti-theft anti-loosing fastener

Info

Publication number: CN1710297A
Application number: CN 200510027216
Authority: CN
Inventors: 陈通平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-25
Filing date: 2005-06-25
Publication date: 2005-12-21

Abstract

This invention discloses one kind of anti-theft and anti-loose fastener which comprises screw cap, screw bolt and spring washer. The characteristic lay in: the slot of the whole screw or a section of it or just point can receive the convex part of the spring washer. The concave part of the screw cap is provided with 3 more slots to snap the protruding part.

Description

A kind of anti-theft anti-loosing fastener

Technical field

The present invention relates to a kind of fastening piece, be specifically related to a kind of anti-theft anti-loosing fastener.

Background technique

Fastening piece is widely used in all trades and professions, particularly at railway, highway, the effect of the more too busy to get away fastening piece of electric power and various open airs or the like facility, but often stolen, cause national wealth and people's life safety to be on the hazard, for this reason, people have made various anti-theft fastening pieces, also applied for playing the patent of anti-theft feature fastening piece, the effect that is highly profitable is all arranged, but these anti-theft fastening pieces also exist some not enough: the one, adopt nut special tool type, the antitheft problem of the not basic solution of this class anti-theft fastening piece, the thief can copy out extracting tool certainly.Next is a fixed, utilizes pin, wire etc. to set out common slit exactly between screw rod and nut and implements to fill out towards non-return, has played antitheft effect, but for non-nut from now on cause loosening powerless, had only gas cutting it.The 3rd adopts and can only can not use the special tool of loosening power with the power that tightens, though removed the worry that antitheft person copys out extracting tool, can not avoid antitheft person the nut cutter to be outwarded winding with chisel.

Summary of the invention

The present invention is directed to above-mentioned shortcoming, propose a kind of anti-theft anti-loosing fastener, needn't make special tool, be not afraid of chisel cutter, but also can non-nut in the future cause continue to urge after loosening tight.

Anti-theft anti-loosing fastener of the present invention is made up of nut, screw rod and spring washer, it is characterized in that, is parallel to the whole piece of medial axis or one section or the chase of any the protruding place to its center on can putting spring packing ring one end on the screw rod; The ring recess is offered the higher position clinching mutually of the above unidirectional groove at least three roads and the spring washer the other end in the bottom surface of nut or the bottom surface.

In use, earlier spring washer is enclosed within on the screw rod, protruding place on the spring washer has been received in the chase of screw rod simultaneously, then, with nut precession screw rod, when the nut compressing spring washer, lived the higher position on the spring washer because of having the unidirectional groove clinching more than three roads on the nut bottom surface at least, protruding place because of the spring washer the other end has received in the chase of screw rod again, nut can only precession, can not withdraw from, and promptly uses chisel cutter nut, also be difficult to cutter and outward winding, so just played antitheft anti-effect.When enough strength is used in the nut precession, the higher position of spring washer is at the next unidirectional groove of constantly changing along with the precession direction on the nut---and causing at non-nut in the future equally can be along with the precession direction be changed next unidirectional groove after loosening, realizes continuing to urge tight; Nut has also just been lived by the spring washer clinching.Here, spring washer is not only non-return, and anti-loosening also more outstanding.

Description of drawings

Fig. 1 is the schematic representation of this anti-theft anti-loosing fastener.

Fig. 2 is a nut, and 2.1 among the figure is unidirectional grooves of six five equilibriums of ring recess in the bottom surface of nut.

Fig. 3 is a spring washer, and 3.1 among the figure is protruding places, and 3.2 among the figure is the higher positions.

Fig. 4 is a screw rod, and 4.1 among the figure is chases.

Fig. 5 is a nut, and 5.1 among the figure has at least the above unidirectional groove in three roads to be arranged on the bottom surface of nut.

Fig. 6 is that chase is arranged to one section nut.

Fig. 7 is the nut that chase is arranged to a bit.

Most preferred embodiment

The nut of this anti-theft anti-loosing fastener, shown in Figure 5, its bottom surface has the above unidirectional groove in three roads at least, urge tight rear spring packing ring to be crushed on it down, but the nut most preferred embodiment of this anti-theft anti-loosing fastener is shown in Figure 2, encircles recess in the bottom surface for unidirectional groove is arranged on, and the unidirectional groove of average six equal portions is arranged on it, urge tight rear spring packing ring parcel within it, urge tight effect obvious; Screw rod is shown in Figure 4, and chase (4.1) whole piece is parallel to the medial axis.

At first, spring washer (3) is enclosed within on the screw rod (4), (3.1) protruding place in the spring washer (3) is inserted in (4.1) chase on the screw rod (4) simultaneously, then, on nut (2) precession screw rod (4), when nut (2) holddown spring packing ring (3), unidirectional groove (2.1) in six five equilibriums on the nut (2) has been lived with the higher position (3.2) clinching on the spring washer (3), at last, nut (2) is under the effect that screws power, the unidirectional groove (2.1) on the nut (2) is constantly changed in the higher position (3.2) on the spring washer (3), till can not turn.

In addition, the chase of the screw rod in this anti-theft anti-loosing fastener is not limited only to be parallel to the whole piece of medial axis: shown in (4.1) of figure (4) in being, can also be arranged to be parallel to a section of medial axis as figure (6) shown in (6.1) or be arranged to a bit as scheming (7.1) shown in (7).

Claims

1, a kind of anti-theft anti-loosing fastener is made up of nut, screw rod and spring washer, it is characterized in that, be parallel on the screw rod chase of the whole piece of medial axis can putting spring protruding place on packing ring one end to its center; The higher position clinching mutually that has the above unidirectional groove in three roads and the spring washer the other end at least is offered in the bottom surface of nut.

2, the nut of anti-theft anti-loosing fastener according to claim 1 is characterized in that, described nut can with the higher position of the spring washer the other end mutually clinching have at least unidirectional groove more than three roads also can be located at the interior ring recess of nut bottom surface.

3, the screw rod of anti-theft anti-loosing fastener according to claim 1 is characterized in that, the chase that is parallel to the medial axis on the described screw rod also can be made as one section or a bit.

4, the spring washer of anti-theft anti-loosing fastener according to claim 1 is characterized in that, described spring washer one end is the protruding place to its center, and the other end is the higher position.

5, according to the nut of claim 1,2 described anti-theft anti-loosing fasteners, it is characterized in that having the above unidirectional groove in three roads at least, how many average equal portions how many roads are just.