CN202056160U

CN202056160U - Screw

Info

Publication number: CN202056160U
Application number: CN2011201078397U
Authority: CN
Inventors: 陈文才
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-13
Filing date: 2011-04-13
Publication date: 2011-11-30
Anticipated expiration: 2021-04-13

Abstract

The utility model relates to a screw, which comprises a screw head part (1) and a screw tail part (2). The upper end face of the screw head part (1) is provided with a cross-shaped slot (5) or a beam-shaped slot (4) and also more than two rectangular open grooves (3). When the beam-shaped slot or the cross-shaped slot on the screw head part is worn, the screw can be used continuously.

Description

Screw

Technical field

The utility model relates to a kind of screw.

Background technique

At present, the domestic screw that generally uses is standard piece, is a word screw or a plus screw.This screw tightness is good, easy accessibility.But owing to cooperate straight groove or the cross recess tightened to be molded on the end face of screw head only simplely with screw-driver, one word screw or plus screw are after repeatedly dismantling, straight groove or cross recess cell wall place often are worn, inserting straight groove or cross recessed screw-driver head exerts oneself a little, promptly in groove, skid off, can't realize tightening and dismantling of screw, cause the working life of screw not long.

The model utility content

For this reason, technical problem to be solved in the utility model is that a word screw of the prior art or plus screw are after repeatedly dismantling, because of the straight groove of screw head or cross recess easily wearing and tearing cause the problem that screw is non-dismountable or tighten, a kind of screw that forms reserve tank is provided.

For solving the problems of the technologies described above, a kind of screw of the present utility model comprises

Screw head forms cross recess or straight groove on the upper-end surface of described screw head;

The screw afterbody;

Also circumferentially form plural rectangular aperture groove on the upper-end surface of described screw head.

Above-mentioned screw, described rectangular aperture groove forms four equably.

Above-mentioned screw, described rectangular aperture groove is the groove that penetrates the upper and lower end face of described screw head, described rectangular aperture groove along described screw head length in the radial direction poor less than the radius of the radius of described screw head and described screw afterbody.

Technique scheme of the present utility model has the following advantages compared to existing technology, 1, in the utility model, also form plural rectangular aperture groove on the upper-end surface of the head of a plus screw or a word screw, on the one hand can be behind dismounting wear out failure repeatedly continue straight groove or cross recess, by tightening or dismantle in the special instrument insertion rectangular aperture groove, prolonged the working life of screw greatly; 2, the rectangular aperture groove is arranged to groove, and special tool can fully insert in the rectangular aperture groove, even through repeatedly dismounting, rectangular aperture groove 3 has wearing and tearing also not influence follow-up dismounting, the working life of further having improved screw.

Description of drawings

For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below

Fig. 1 is the embodiment's 1 of a screw of the present utility model plan view;

Fig. 2 is the embodiment's 1 of a screw of the present utility model plan view;

Fig. 3 is the embodiment's 2 of a screw of the present utility model plan view.

Reference character is expressed as among the figure: 1-screw head, 2-screw afterbody, 3-rectangular aperture groove, 4-straight groove, 5-cross recess.

Embodiment

To shown in Figure 2, a kind of screw of present embodiment 1 comprises the screw head 1 that forms straight groove 4 on the upper-end surface, and screw afterbody 2 as Fig. 1; Also circumferentially form plural rectangular aperture groove 3 on the upper-end surface of described screw head 1.When described straight groove 4 behind dismounting wear out failure repeatedly, can insert in the standby described rectangular aperture groove 3 by special instrument and tighten or dismantle, prolong the working life of screw greatly.In this enforcement, described rectangular aperture groove 3 forms four equably.Certainly, in other embodiments, can also be arranged to three, five or a plurality of.Described rectangular aperture groove 3 is the groove that penetrates the upper and lower end face of described screw head 1, described rectangular aperture groove 3 along described screw head 1 length in the radial direction poor less than the radius of the radius of described screw head 1 and described screw afterbody 2, described rectangular aperture groove 3 is arranged to groove, can guarantee that special tool can fully insert in the described rectangular aperture groove 3, even through repeatedly dismounting, described rectangular aperture groove 3 has wearing and tearing also not influence follow-up dismounting, the working life of further having improved screw.

In embodiment 2, form cross recess 5 on the upper-end surface of described screw head 1, as shown in Figure 3.

Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.

Claims

1. a screw comprises

Screw head (1) forms cross recess (5) or straight groove (4) on the upper-end surface of described screw head (1);

Screw afterbody (2);

It is characterized in that:

Also circumferentially form plural rectangular aperture groove (3) on the upper-end surface of described screw head (1).

2. screw according to claim 1 is characterized in that: described rectangular aperture groove (3) forms four equably.

3. screw according to claim 1 and 2, it is characterized in that: described rectangular aperture groove (3) is for penetrating the groove of upper and lower end face of described screw head (1), described rectangular aperture groove (3) along described screw head (1) length in the radial direction poor less than the radius of the radius of described screw head (1) and described screw afterbody (2).