JPS6056812U

JPS6056812U - screw

Info

Publication number: JPS6056812U
Application number: JP14856283U
Authority: JP
Inventors: 昇小池
Original assignee: 株式会社東芝
Priority date: 1983-09-26
Filing date: 1983-09-26
Publication date: 1985-04-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のねじの外形を示す図でありａはねじ頭の
平面図、ｂはそのねじの側面図、第２図は第１図のねじ
を回す工具の先端を示す図で、ａは刃先を示す平面図、
ｂは刃先の側面図、第３図は他の従来のねじを示す図で
あり、ａはねじ頭を示す平面図、ｂはそのねじの側面図
、第４図は第３図のねじを回す工具の先端を示す図であ
り、ａは工具の刃先を示す平面図（ｂは工具の側面図で
ある。第５図は本考案に係るねじの一実施例を示す図で
あり、ａはねじ頭の平面図、ｂはねじの側面図、第６図
は本考案の他の実施例を示す図であり、ａはねじ頭の平
面図、ｂはねじの側面図、第７図は本考案に係る実施例
のねじを通常のドライバーによって回す作動を示す側面
図、第８図は特殊工具を使用してねじを締結する状態を
示した側面図である。１．５．１０・・・ねじ頭、２・・・凹部、３・・・刃
先、４・・・工具（ねじ回し）、１２・・・すりわり（
凹部）、１３・・・当り面、１４・・・勾配面、１５・
・・支持穴、２０・・・ドライバー、２１・・・工具。Figure 1 is a diagram showing the external shape of a conventional screw; a is a plan view of the screw head; b is a side view of the screw; Figure 2 is a diagram showing the tip of the tool for turning the screw in Figure 1; is a plan view showing the cutting edge;
b is a side view of the cutting edge, FIG. 3 is a diagram showing another conventional screw, a is a plan view showing the screw head, b is a side view of the screw, and FIG. 4 is turning the screw in FIG. 3. FIG. 5 is a diagram showing the tip of the tool; a is a plan view showing the cutting edge of the tool; FIG. 5 is a side view of the tool; FIG. FIG. 6 is a diagram showing another embodiment of the present invention; a is a plan view of the screw head; b is a side view of the screw; FIG. 7 is a side view of the screw; Fig. 8 is a side view showing the operation of turning the screw of the embodiment with a normal screwdriver, and Fig. 8 is a side view showing the state in which the screw is fastened using a special tool. 1.5.10... Screw Head, 2... recess, 3... cutting edge, 4... tool (screwdriver), 12... slot (
recess), 13... contact surface, 14... slope surface, 15.
...Support hole, 20...Driver, 21...Tool.

Claims

[Scope of utility model registration request]

A screw having a recess formed by a slot or cross recess that is engaged by a screwdriver, characterized in that the surface of the recess that faces the surface in the loosening direction of the screwdriver is an inclined surface through which the screwdriver escapes. .