CN105822647A

CN105822647A - Single-screwing-direction screw

Info

Publication number: CN105822647A
Application number: CN201610344501.0A
Authority: CN
Inventors: 陈烁
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-22
Filing date: 2016-05-22
Publication date: 2016-08-03

Abstract

The invention discloses a single-screwing-direction screw and belongs to the field of hardware goods. The single-screwing-direction screw can only be screwed but cannot be unscrewed. The single-screwing-direction screw is achieved in the manner that the single-screwing-direction screw comprises a screw rod and a screw cap; a groove wall on the clockwise side of a concave part of a bayonet in the screw cap is a steep groove wall; and an irregular block-shaped object with an arc is removed from a groove wall on the anticlockwise side of the concave part of the bayonet so that a sliding groove can be formed. The single-screwing-direction screw is suitable for occasions where screws do not need to be demounted.

Description

Single rotation direction screw

Technical field

The present invention is relevant with hardware article, specifically refers to a kind of single rotation direction screw.

Background technology

Screw is that one uses connector widely, it is typically made up of band point and the nail rod of screw thread and the head of a nail with bayonet, the thread rotary orientation of wide screw is all in clockwise, and in embedding the bayonet socket on the head of a nail by screwdriver during use, dextrorotation transfers the fixing component of DRIVE SCREWS nail；Bayonet socket is the channel-shaped of depression, or cross is flower-shaped or yi word pattern, the both sides at notch depression position i.e. clockwise and counterclockwise is all the most steep cell wall, and such structure facilitates the embedding force of screwdriver, has both facilitated clockwise screwing to be also convenient for anticlockwise unscrewing；And during suspension clamping device in many occasions, such as door, it is desirable to the screw for being fastenedly connected can only screw and be difficult to unscrew, i.e. can only just then can not invert, such feature is the most antitheft, is required for people.

Summary of the invention

The purpose of the present invention is to provide the new technical scheme list rotation direction screw of a kind of screw, and it can solve aforesaid problem.

The content of technical solution of the present invention is as follows: it comprises nail rod, the head of a nail, the cell wall of the clockwise direction side of its depressed area of bayonet socket on the described head of a nail is steep cell wall, and the cell wall of the counter clockwise direction side of bayonet socket depressed area then removes the irregular block of one piece of band circular arc and becomes chute.

The invention has the beneficial effects as follows: screw can only be tightened and cannot unscrew, the clockwise direction at the notch depression position on bayonet socket has steep cell wall, the force that turns clockwise for screwdriver provides the condition of necessity, reverse counter clockwise direction rotates then because of the chute that counter clockwise direction is arcuation face at notch depression position, impetus can not be provided, from without being loosened for the force that rotates counterclockwise of screwdriver.

Accompanying drawing illustrates:

Fig. 1, Fig. 2 are common screw entirety, the front of bayonet socket, vertical view, profile and partial enlarged view.

Fig. 3 is that the block of the design head of a nail depressed area removes the view processed.

Fig. 4 be the design screw remove after completion of processing just, top view.

Fig. 5 is elevational view and the magnified detail view of bayonet socket of the design screw.

In each figure, 1 is nail rod, and 2 is the head of a nail, and 3 is bayonet socket, and 4 is block, and 5 is chute.

Detailed description of the invention:

Explanation for example to the design below in conjunction with the accompanying drawings.

nullSuch as Fig. 1、Shown in Fig. 2，The structure of common screw is generally just as，It is made up of the head of a nail 2 of band point and the nail rod 1 of screw thread and band bayonet socket 3，The bayonet socket 3 on the screw head of a nail of the design cell wall in the clockwise direction side of its recessed groove port part is same as the steep cell wall on conventional screw，The cell wall of the counter clockwise direction side of bayonet socket recessed groove port part then removes the irregular block 4 of one piece of band circular arc and becomes chute 5，Such as Fig. 3、Fig. 4、Shown in Fig. 5，So head of a nail bayonet socket of processing can make screwdriver can only carry out clockwise screwing force，When carry out anticlockwise unscrew force time，Chute 5 on bayonet socket can not provide impetus for screwdriver，The bayonet socket depression notch that the screwdriver twisted can be separated from the head of a nail because of the arcuation sliding surface at chute 5 position，Screw cannot be made to realize anticlockwise unscrewing rotation，I.e. screw can only be tightened and cannot unscrew，The clockwise direction at the notch depression position on bayonet socket has steep cell wall，The force that turns clockwise for screwdriver provides the condition of necessity，Reverse reversely rotates counterclockwise then because of the chute that counter clockwise direction is arcuation face at notch depression position，Impetus can not be provided for the force that rotates counterclockwise of screwdriver.

Claims

1. a single rotation direction screw, it comprises nail rod, the head of a nail, the cell wall that it is characterized in that the clockwise direction side of its depressed area of bayonet socket on the described head of a nail is steep cell wall, and the cell wall of the counter clockwise direction side of bayonet socket depressed area then removes the irregular block of one piece of band circular arc and becomes chute.