CN2364264Y

CN2364264Y - Wood screw

Info

Publication number: CN2364264Y
Application number: CN 99205588
Authority: CN
Inventors: 林昭围
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-11
Filing date: 1999-03-11
Publication date: 2000-02-16
Anticipated expiration: 2009-03-11

Abstract

The utility model relates to a wood screw. The utility model has the structure that a nail rod is provided with two or more than two grooves having circular radian, and the depth of each groove is smaller than the outer diameter of each thread of the nail rod; in addition, the length of each groove is smaller than the total length of the nail rod. Accordingly, the screwing speed can be increased, and the phenomena that the nail is broken and material is cracked can not easily occur.

Description

Novel wood screw

The utility model relates to a kind of wood screw.

At present, known wood screw, it announces case the 125682nd, 190870,235989 and No. 273277, wherein the 125682nd and No. 235989 case all is that the nail afterbody of following closely bar has the polygon pyramid or bores tail, so as to reaching ablation, and screw in wood ability or the other materials, announce the 190870th and No. 273277 case and then tie up to the wood screw afterbody and have groove or cutting slot, through the test pyramid or bore tail and single groove or cutting slot and the screw bolt is gone into quality there is no significantly to promote with improving and still have broken nail and split the material phenomenon than the speed of hard rigid material and use and take place.

In view of this, the purpose of this utility model provides a kind of novel wood screw, and it is on the nail bar a plurality of grooves to be set, and reduces the resistance that wood screw screws in timber or other materials fixture.

The purpose of this utility model is achieved in that a kind of novel wood screw comprises ailhead, nail bar and nail afterbody thereof, it is characterized in that: the nail bar has the groove more than two or two, this groove has the circular arc degree, its degree of depth is less than the major diameter of thread of nail bar, and the length of groove is less than nail bar total length again.

Owing to adopt such scheme: the groove when the nail bar screws on it is row's wood chip passage, and it is little to screw in resistance, therefore, can carry on a shoulder pole high screw-in speed, also is difficult for broken nail taking place, splitting the nail phenomenon.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model exemplary embodiments stereogram;

Fig. 2 is the 2-2 sectional view of the utility model exemplary embodiments Fig. 1;

Fig. 3 is the 3-3 sectional view of the utility model exemplary embodiments Fig. 1;

Fig. 4 is the utility model exemplary embodiments schematic representation;

Fig. 5 is a kind of user mode figure of the utility model exemplary embodiments;

Fig. 6 is the another kind of user mode figure of the utility model exemplary embodiments;

Shown in Fig. 1-4, first embodiment system comprises ailhead 1 and is positioned at the nail bar 2 of ailhead 1 below (containing the thread line 3 on the nail bar), and the nail afterbody 4 that is positioned at nail bar end is formed, wherein at the nail bar and have groove 5 more than two or two, 6, one groove 5 of this two groove need be followed closely afterbody certainly and up extend, another groove 6 then is positioned at nail bar surface, since then, the circular arc degree of this two groove can be the diameter random lengths and is equal to each other or unequal, groove angle can be arbitrarily angled and form and mutually the same or inequality, and the length D of two grooves, D1 can equate or be unequal, reach D or D1 system greater than zero and less than nail bar length overall, and the depth d of groove, d1 is greater than zero and less than between the external diameter of following closely bar screw thread line 3.Find out with horizontal projection plane space (as the A direction of arrow of Fig. 4) or vertical re-projection linear space (as the B direction of arrow of Fig. 4) again, two grooves can be overlapping fully or not overlapping or be overlapped, so get the screw of present embodiment, its two groove with the screw center line vertical projection linearity of Fig. 1 near the time, the speed of going into its bolt heals fast and resistance is littler, and

groove

5,6 hold the material bits after the fashionable planing of screw threads simultaneously, reduce the peripheral material of extrusion screw, the resistance that makes more single groove lock material significantly reduces, significantly accelerate and lock efficient, more contain more planings back material bits because of plural groove, can significantly reduce the integral material situation of splitting, even this groove 5 is not initial from the nail afterbody, the performance that also has identical functions and advantage, make the wood screw of present embodiment run into hard timber or other materials also gently the quick bolt of power go into and the improvement that is difficult for that broken nail takes place and splits the material phenomenon.

Claims

1, a kind of novel wood screw comprises ailhead, nail bar and nail afterbody thereof, it is characterized in that: the nail bar has the groove more than two or two, and this groove has the circular arc degree, and its degree of depth is less than the major diameter of thread of nail bar, and the length of groove is less than nail bar total length again.