CN200961613Y

CN200961613Y - Theft-proof nut

Info

Publication number: CN200961613Y
Application number: CN 200620133968
Authority: CN
Inventors: 宋贵彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-30
Filing date: 2006-09-30
Publication date: 2007-10-17
Anticipated expiration: 2016-09-30

Abstract

The utility model relates to an anti-theft nut, which is in a barrel shape, wherein the axial part of the nut id opened with a through screw thread hole, an end edge of one end is opened with a plurality of one-way fastening troughs, one end of each one-way fastening trough is provided with a forced surface vertical to the end edge, and the other end is smoothly extended to the end edge; and the direction of the forced surfaces of a plurality of one-way fastening troughs is the same with the direction of screwing the anti-theft nut. Also one end of the anti-theft nut is extended outwards with a circle of nosings, and the one-way fastening troughs are disposed on the nosings. Utilizing this nut can achieve the anti-theft purpose since the nut can not be disassembled with the common tools.

Description

Anti-theft nut

Technical field

The utility model relates to a kind of anti-theft nut.

Background technique

The car plate of communal facility such as traffic mark board, motor vehicle, electric power facility etc. are often stolen, cause the public interest sustain damage, are the difficult problems that current society faces.Make anti-theft device as how lower cost, reach anti-theft effect, be worth further investigation.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: a kind of nut is provided, and the outer rim of nut all is circular, and uses common instrument this nut, bolt can not be turned on, to reach antitheft purpose.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of anti-theft nut, it is characterized in that: it is cylindric, it axially offers the tapped hole of a perforation, and on one end ora terminalis, offer at least two unidirectional tightened-up grooves, each unidirectional tightened-up groove one end is provided with the stress surface vertical with described ora terminalis, and the other end then is the smooth described ora terminalis that extends to; The direction of the stress surface of described several unidirectional tightened-up grooves is identical with the direction that anti-theft nut is screwed.

The end that anti-theft nut is not established the unidirectional tightened-up groove is outward extended with a circle bead.

Described bead has the portion of extending axially.

For achieving the above object, the technical solution adopted in the utility model can also be:

A kind of anti-theft nut, it is characterized in that: it is cylindric, it axially offers the tapped hole of a perforation, be outward extended with a circle bead at the one end, on described bead, offer at least two unidirectional tightened-up grooves, each unidirectional tightened-up groove one end is provided with and the vertical stress surface in described bead plane, and the other end then is the smooth described bead plane that extends to; The direction of the stress surface of described several unidirectional tightened-up grooves is identical with the direction that anti-theft nut is screwed.

Described bead has the portion of extending axially.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: to use general tool can't dismantle this anti-theft nut, can reach antitheft effect.

Description of drawings

Fig. 1 is the utility model first embodiment's stereogram;

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

Fig. 3 is the utility model second embodiment's stereogram;

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

Fig. 5 is the utility model the 3rd embodiment's stereogram;

Fig. 6 is the sectional view of Fig. 5;

Fig. 7 is the utility model the 4th embodiment's stereogram;

Fig. 8 is the sectional view of Fig. 7;

Fig. 9 is the utility model the 4th embodiment's stereogram;

Figure 10 is the sectional view of Fig. 9.

Description of reference numerals: 10-anti-theft nut; The 11-ora terminalis; The 12-tapped hole; 13-unidirectional tightened-up groove; The 131-stress surface; The 20-anti-theft nut; The 21-bead; The 30-anti-theft nut; The 31-bead; 32-extends axially portion; The 40-anti-theft nut; The 41-bead; 411-bead plane; 43-unidirectional tightened-up groove; The 431-stress surface; The 50-anti-theft nut; The 51-bead; 511-bead plane; 52-extends axially portion; 53-unidirectional tightened-up groove; The 531-stress surface.

Embodiment

As shown in Figure 1 and Figure 2, be first embodiment's stereogram and the sectional view of the utility model anti-theft nut, described anti-theft nut 10 is cylindric, it axially offers the tapped hole 12 of a perforation, and on one end ora terminalis 11, offer several unidirectional tightened-up grooves 13, each unidirectional tightened-up groove 13 1 end is provided with the stress surface 131 vertical with described ora terminalis 11, and the other end then is the smooth described ora terminalis 11 that extends to.The direction of the stress surface 131 of described several unidirectional tightened-up grooves 13 is identical with the direction that anti-theft nut is screwed.After pushing described stress surface 131 described anti-theft nut 10 screwed, can't it be unscrewed with general tool, just reached antitheft purpose.

As shown in Figure 3, Figure 4, be the utility model second embodiment's stereogram and sectional view, the anti-theft nut 20 wherein and the difference of the anti-theft nut 10 among first embodiment are: the end that anti-theft nut 20 is not established the unidirectional tightened-up groove stretches out and forms a circle bead 21.

As Fig. 5, shown in Figure 6, be the utility model the 3rd embodiment's stereogram and sectional view, the anti-theft nut 30 wherein and the difference of the anti-theft nut 20 among second embodiment are: described bead 31 has the portion of extending axially 32.

As Fig. 7, shown in Figure 8, be the utility model the 4th embodiment's stereogram and sectional view, the anti-theft nut 40 wherein and the difference of the anti-theft nut 20 among second embodiment are: described unidirectional tightened-up groove 43 is located on the bead 41, each unidirectional tightened-up groove 43 1 end is provided with the stress surface 431 vertical with described bead plane 411, and the other end then is the smooth described bead plane 411 that extends to; The direction of the stress surface 431 of described several unidirectional tightened-up grooves 43 is identical with the direction that anti-theft nut 40 is screwed.

As Fig. 9, shown in Figure 10, be the utility model the 5th embodiment's stereogram and sectional view, the anti-theft nut 50 wherein and the difference of the anti-theft nut 30 among the 3rd embodiment are: described unidirectional tightened-up groove 53 is located on the bead 51, each unidirectional tightened-up groove 53 1 end is provided with the stress surface 531 vertical with described bead plane 511, and the other end then is the smooth described bead plane 511 that extends to; The direction of the stress surface 531 of described several unidirectional tightened-up grooves 53 is identical with the direction that anti-theft nut 50 is screwed.

More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.

Claims

1, a kind of anti-theft nut, it is characterized in that: it is cylindric, it axially offers the tapped hole of a perforation, and on one end ora terminalis, offer at least two unidirectional tightened-up grooves, each unidirectional tightened-up groove one end is provided with the stress surface vertical with described ora terminalis, and the other end then is the smooth described ora terminalis that extends to; The direction of the stress surface of described several unidirectional tightened-up grooves is identical with the direction that anti-theft nut is screwed.

2, anti-theft nut according to claim 1 is characterized in that: the end that anti-theft nut is not established the unidirectional tightened-up groove is outward extended with a circle bead.

3, anti-theft nut according to claim 2 is characterized in that: described bead has the portion of extending axially.

4, a kind of anti-theft nut, it is characterized in that: it is cylindric, it axially offers the tapped hole of a perforation, be outward extended with a circle bead at the one end, on described bead, offer at least two unidirectional tightened-up grooves, each unidirectional tightened-up groove one end is provided with and the vertical stress surface in described bead plane, and the other end then is the smooth described bead plane that extends to; The direction of the stress surface of described several unidirectional tightened-up grooves is identical with the direction that anti-theft nut is screwed.

5, anti-theft nut according to claim 4 is characterized in that: described bead has the portion of extending axially.