JPS6130712U

JPS6130712U - screw

Info

Publication number: JPS6130712U
Application number: JP11547584U
Authority: JP
Inventors: 栄一衛藤
Original assignee: ヱト−株式会社
Priority date: 1984-07-28
Filing date: 1984-07-28
Publication date: 1986-02-24

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

【図面の簡単な説明】図面は本願考案の実施例を示すもので第１図は本願考案
の正面図、第２図はねじ穴あけ部Ｅ−Ｈの横断面図、第
３図及び第４図はねじ切削部のＦ−Ｆ及びＧ−Ｇの横断
面図である。なお図中１・・・・・・ねじ山、２・・・・・・ねじ穴
あけ部、３・・・・・・尖り先、４・・・・・・ねじ切
削部、５・・・・・・ねじ込み部、Ｈ・・・・・・尖り
部３より中心点Ｐまでの長さ、Ｐ・・・・・・中心点、
Ｒ・・・・・・半径、Ｅ，Ｆ，Ｇ・・川・切断線。[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the present invention, FIG. 2 is a cross-sectional view of the screw hole E-H, and FIGS. 3 and 4. FIG. 2 is a cross-sectional view taken along lines FF and GG of the thread cutting part. In the figure, 1... Thread thread, 2... Thread drilling part, 3... Sharp point, 4... Thread cutting part, 5... ...Threaded part, H... Length from the pointed part 3 to center point P, P... Center point,
R...Radius, E, F, G...River/cutting line.

Claims

[Scope of utility model registration request]

As shown in the drawing, a screw hole portion 2 is configured to have a conical pointed tip 3 with a thread 1, and a length H from the pointed tip 3 of the screw hole portion 2 is the same as that of the screw hole portion 2. A thread-cutting part 4 is formed by setting a center point P at a position larger than the length of 2, and having a circular arc shape with a radius k centered around the center point P, and a thread-cutting part 4 formed by cutting out a part of a thread. A screw characterized in that it is formed by sequentially connecting and integrating 5 and 5.