JPS61181114U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案の一実施例に係るナツトの縦
断面図、第２図は上記ナツトのめねじ部の部分縦
断面図、第３図は締め付け動作時の上記ナツトと
ボルトとの螺合関係を示す要部の縦断面図、第４
図は戻し動作時の同螺合関係を示す要部の縦断面
図、第５図は従来の標準的なナツトのめねじ部の
要部縦断面図、第６図Ａ，Ｂは第４図のナツトと
ボルトとの螺合関係を示す要部縦断面図である。 １……ナツト、２……めねじ、３……ねじ山、
４ａ……進みフランク、４ｂ……追いフランク、
５……谷底、θ_１……進みフランクの傾斜角、θ
_２……追いフランクの傾斜角、Ｏ……軸線、Ｐ…
…軸線に直交する面。 Fig. 1 is a vertical cross-sectional view of a nut according to an embodiment of the invention, Fig. 2 is a partial longitudinal cross-sectional view of the female threaded portion of the nut, and Fig. 3 is a threaded connection between the nut and bolt during tightening operation. Vertical cross-sectional view of main parts showing the relationship, No. 4
The figure is a longitudinal cross-sectional view of the main part showing the same screwing relationship during the return operation, Fig. 5 is a longitudinal cross-sectional view of the main part of the female thread part of a conventional standard nut, and Fig. 6 A and B are the same as Fig. 4 FIG. 3 is a vertical cross-sectional view of a main part showing the screwing relationship between a nut and a bolt. 1...Nut, 2...Female thread, 3...Screw thread,
4a...Advance flank, 4b...Chasing flank,
5...Trough bottom, θ ₁ ...Inclination angle of leading flank, θ
₂ ...Inclination angle of trailing flank, O...Axis line, P...
...A surface perpendicular to the axis.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ねじ山の追いフランクと軸線に直交する面との
角度が、進みフランクと上記面との角度よりも小
さく、かつねじの谷底が進みフランク側に低く追
いフランク側に高いテーパ面にて構成されたナツ
ト。 The angle between the trailing flank of the thread and the plane orthogonal to the axis is smaller than the angle between the leading flank and the above-mentioned surface, and the root of the screw is configured with a tapered surface that is low on the leading flank side and high on the trailing flank side. Natsuto.