JPS5870512U

JPS5870512U - bolt

Info

Publication number: JPS5870512U
Application number: JP16537181U
Authority: JP
Inventors: 繁雄鈴木
Original assignee: 第一工業株式会社
Priority date: 1981-11-05
Filing date: 1981-11-05
Publication date: 1983-05-13

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本案ボルトの正面図、第２図は平面図、第３図
はＡ−Ａで切断して示した本案ボルトの正断面図、第４
図は従来ボルトを中心で縦断して示した正断面図、第５
図は従来ボルトの平面図、第６図はＢ−Ｂで切断して示
した本案ボルトの平面図、第７図はＣ−Ｃで切断して示
した従来ボルトの平面図である。Ａ・・・・・・ボルト、１・・・・・・頭部、２・・・
・・・軸部、４・・・・・・六角錐形くぼみ、５・・・
・・・頂部、７・・・・・・六角錐構成面、訃・・・・
・頭部側面。Fig. 1 is a front view of the proposed bolt, Fig. 2 is a plan view, Fig. 3 is a front sectional view of the proposed bolt taken along A-A, and Fig. 4 is a front view of the proposed bolt.
The figure is a front sectional view taken longitudinally through the conventional bolt.
The figure is a plan view of the conventional bolt, FIG. 6 is a plan view of the proposed bolt taken along line B-B, and FIG. 7 is a plan view of the conventional bolt taken along line C-C. A...Bolt, 1...Head, 2...
...Shaft part, 4...Hexagonal pyramidal recess, 5...
...Top, 7...Hexagonal pyramid structure, base...
- Side of the head.

Claims

[Scope of utility model registration request]

Bolt A (17) head 1 is made up of a hexagonal head 1 having a certain thickness, a shaft 2 protruding from the center of the lower surface of the head 1, and a thread 3 carved on the periphery of the shaft 2. , the top 5 is on the axis C,
In addition, the hexagonal pyramidal recess 4 located inside the head 1 and expanding toward the upper surface 6 of the chain part is positioned so that the hexagonal pyramidal constituting surfaces 7 are in the same direction as the side surfaces 8 of the head, and is placed near the upper surface 6 of the head. The bolt is characterized in that the hexagonal pyramid forming surface 7 is located a certain amount inside the head side surface 8.