JPH026812U

JPH026812U -

Info

Publication number: JPH026812U
Application number: JP8594888U
Authority: JP
Priority date: 1988-06-28
Filing date: 1988-06-28
Publication date: 1990-01-17

Description

[Brief explanation of the drawing]

第１図…本考案に使用する一実施例のナツトと
スプリングワツシヤの半断面図、第２図…本考案
のナツトとスプリングワツシヤのプレス状態を示
す半断面図、第３図…本考案のナツトとスプリン
グワツシヤの固着状態を示す半断面図、第４図…
本考案のナツトとスプリングワツシヤの係合状態
を示す部分拡大断面図、第５図…本考案の第２実
施例のナツトとスプリングワツシヤの半断面図、
第６図…本考案の第２実施例のナツトとスプリン
グワツシヤの固着状態を示す半断面図、第７図…
従来例の部分拡大断面図。１……ナツト、２……ねじ孔、３……座面、４
……環状突部、５……スプリングワツシヤ、６…
…先端外周縁、７……面取り部、８……係合段部
、９……係合突起、１０……鋸刃状突起、１０ａ
……鋸刃状突起の傾斜面、１０ｂ……鋸刃状突起
の垂直な面、ｔ……隙間。 Fig. 1: A half-sectional view of a nut and spring washer according to an embodiment of the invention, Fig. 2: A half-sectional view showing the nut and spring washer of the invention in a pressed state, Fig. 3: This invention Fig. 4 is a half-sectional view showing the fixed state of the nut and spring washer...
FIG. 5 is a partially enlarged cross-sectional view showing the engaged state of the nut and spring washer of the present invention; a half-sectional view of the nut and spring washer of the second embodiment of the present invention;
Fig. 6...A half sectional view showing the fixed state of the nut and spring washer according to the second embodiment of the present invention, Fig. 7...
FIG. 2 is a partially enlarged sectional view of a conventional example. 1...Nut, 2...Screw hole, 3...Seat surface, 4
...Annular protrusion, 5...Spring washer, 6...
...Tip outer peripheral edge, 7... Chamfered portion, 8... Engagement stepped portion, 9... Engagement protrusion, 10... Serrated protrusion, 10a
... Sloped surface of saw blade-like projection, 10b ... Vertical surface of saw blade-like projection, t... Gap.

Claims

[Scope of Claim for Utility Model Registration] (1) In a nut with a spring washer in which a spring washer is fitted to the outer periphery of an annular protrusion protruding from the seat surface of the nut so as to surround a threaded hole in the nut, The outer diameter of the annular protrusion is expanded to press the outer circumferential surface of the annular protrusion against the inner circumferential surface of the spring washer, which has an inner diameter larger than the outer diameter of the annular protrusion. A nut with a spring washer, characterized in that the peripheral edge engages with a part of the chamfered part of the spring washer. (2) The nut with a spring washer according to claim 1, wherein the engaging portion of the outer peripheral edge of the tip is 1/2 or more and 3/4 or less of the entire circumference of the chamfered portion. (3) The nut with a spring washer according to claim 1 of the utility model registration, characterized in that the standard of the spring washer is larger than the standard of the nut. (4) It has a serrated surface that has an inclined surface in the nut tightening direction and a surface that is almost perpendicular to the nut loosening direction, and that the end of the spring washer engages when the nut is about to rotate in the loosening direction. A nut with a spring washer according to claim 1 of the utility model registration, characterized in that a protrusion is formed on the seat surface of the nut.