CN2752518Y - Antitheft expansion screw - Google Patents

Abstract

The utility model relates to an anti-theft expansion bolt which comprises a screw rod (2), the end part of which is provided with a protrusion (1), a sleeve pipe (4) which is sheathed on the outer side of the screw rod (2) and a screw (5) which is arranged on the other end of the sleeve pipe (4), wherein four open grooves (3) are arranged on one end of the sleeve pipe (4); the screw (5) is sheathed on the screw rod (2). The utility model is characterized in that a screw cap (6) is also arranged on the screw rod (2). The utility model overcomes the defect that the existing expansion bolt does not has an anti-theft function, and the utility model has the advantages of beautiful appearance and an anti-theft function.

Description

The theft-proof expansion screw

Technical field

The utility model relates to a kind of swell fixture, and more particularly it is a kind of theft-proof expansion screw.

Background technique

Existing swell fixture is convenient and practical, of many uses, price is not high yet, but to have a shortcoming be exactly the nearly 3-8cm that is exposed of screw when mounted for they, and is so neither attractive in appearance, accidents caused easily again, as the hanging breaking clothes etc.; This in addition screw is drawn easily, does not therefore have antitheft effect.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned existing swell fixture and a kind of theft-proof expansion screw is provided.

The purpose of this utility model reaches by following measure: the theft-proof expansion screw, it comprises that there is the screw rod 2 of projection 1 end, one is enclosed within the sleeve pipe 4 that screw rod 2 outer ends have four open recess 3, the other end screw 5 at sleeve pipe 4, screw 5 is enclosed within on the screw rod 2, it is characterized in that also having a nut 6 on described screw rod 2.

In technique scheme, described nut 6 is for being circular arc.

In technique scheme, an aperture 7 is arranged on the described nut 6.

The utlity model has beautiful shape and antitheft effect, and install solid, firm.

Description of drawings

Fig. 1 is the structural representation of original swell fixture;

Fig. 2 is the structural representation of the utility model theft-proof expansion screw.

Embodiment

Describe performance of the present utility model in detail below in conjunction with accompanying drawing:

1 is that projection, 2 is that screw rod, 3 is that groove, 4 is that sleeve pipe, 5 is that screw, 6 is that nut, 7 is an aperture among the figure.

During use, with the utility model theft-proof expansion screw in clockwise direction rotates into hole on the wall, make groove on the sleeve pipe snap in projection on the screw rod, further screw is screwed in again, sleeve pipe is further expanded, nut and object are combined closely, and one that does not so just have screw exposes; On the aperture of nut, hammer into steel nail or other object again, just can reach attractive in appearance and antitheft effect.

Claims (3)

1, theft-proof expansion screw, it comprises that there is the screw rod of projection (1) (2) end, one is enclosed within the sleeve pipe (4) that the outer end of screw rod (2) has four open recess (3), the other end screw (5) at sleeve pipe (4), screw (5) is enclosed within on the screw rod (2), it is characterized in that going up a nut (6) in addition at described screw rod (2).

2, theft-proof expansion screw according to claim 1 is characterized in that described nut (6) is circular arc.

3, theft-proof expansion screw according to claim 1 is characterized in that an aperture (7) is arranged on the described nut (6).

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