JPS6131619U

JPS6131619U - screw tap

Info

Publication number: JPS6131619U
Application number: JP11770084U
Authority: JP
Inventors: 正雄木村
Original assignee: 三和精工株式会社
Priority date: 1984-07-30
Filing date: 1984-07-30
Publication date: 1986-02-26
Also published as: JPS6310890Y2

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 the drawing]

第１図は本考案の一実施例の正面図、第２図ａは同要部
の縦断正面図、第２１ｆｆｌｂは同他の実施例の要部の
縦断正面図、第３図ａは本考案の第２図ａに示す一実施
例によって製作されたナットの縦断正面図、第３図ｂは
同第２図ｂに示す実施例によって製作されたナットの縦
断正面図、第４図ａ及び第４図ｂはそれぞれ第３図ａ及
び第３図ｂに示すナットの作動状態を示す縦断正面図、
第５図ａ及び第５図ｂも同様の作動状態を示す縦断正面
図、第６図〜第８図は従来のナット及びその作動状態を
示す縦断正面図である。Ｏ・・・軸線、Ｑ・・・仮想基準線、２９・・・ねじ山
、３０．３０’・・・山頂部、３１・・・谷底部、ｌ１
，１・・・ねじ山の山頂部並びに谷底部と軸中心との距
離、Ａ・・・軸中心、Ｂ・・・ねじ込み方向線。Fig. 1 is a front view of an embodiment of the present invention, Fig. 2a is a longitudinal sectional front view of the same main part, Fig. 21fflb is a longitudinal sectional front view of the main part of another embodiment of the invention, and Fig. 3a is a longitudinal sectional front view of the main part of the same embodiment. FIG. 3b is a longitudinal sectional front view of a nut manufactured according to the embodiment shown in FIG. 2a, FIG. 3b is a longitudinal sectional front view of a nut manufactured according to the embodiment shown in FIG. 4b is a longitudinal sectional front view showing the operating state of the nut shown in FIGS. 3a and 3b, respectively;
FIGS. 5a and 5b are longitudinal sectional front views showing similar operating states, and FIGS. 6 to 8 are longitudinal sectional front views showing conventional nuts and their operating states. O... Axis line, Q... Virtual reference line, 29... Screw thread, 30.30'... Mountain top, 31... Valley bottom, l1
, 1... Distance between the top and bottom of the thread and the shaft center, A... Shaft center, B... Threading direction line.

Claims

[Claims for Utility Model Registration] 1. The crests and valleys of the threads are formed at equal pitches in parallel to an imaginary reference line that is slightly inclined with respect to the axis, thereby forming the crests of each thread. and a screw tap formed with a diameter that becomes smaller as the distance between the root and the center of the shaft increases in the sumo wrestler screwing direction. 2. The screw tap according to claim 1, wherein the crest of the thread is formed into a tapered surface whose crest height decreases in the screwing direction.