JPH0351284U

JPH0351284U -

Info

Publication number: JPH0351284U
Application number: JP11216989U
Authority: JP
Priority date: 1989-09-26
Filing date: 1989-09-26
Publication date: 1991-05-17

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の一実施例を示し、第
１図はスプールの要部を示す部分正面図、第２図
は螺旋溝に沿つて切断したスプールの断面図、第
３図は螺旋溝製作の様子を示す説明図である。第
４図は本考案の他の実施例を示す第１図に対応す
る部分正面図である。第５図〜第７図は従来例を
示し、第５図はスプールを備えた切換弁の要部断
面図、第６図はノツチを設けたスプールの要部を
示す第１図及び第４図相当の部分正面図、第７図
はノツチに沿つて切断した第２図相当のスプール
断面図である。１……スプール、２，６……螺旋溝、３……ラ
ンド部、４……切換部。 Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a partial front view showing the main parts of the spool, Figure 2 being a sectional view of the spool cut along the spiral groove, and Figure 3 being a cross-sectional view of the spool cut along the spiral groove. FIG. 2 is an explanatory diagram showing how the spiral groove is manufactured. FIG. 4 is a partial front view corresponding to FIG. 1 showing another embodiment of the present invention. 5 to 7 show a conventional example, FIG. 5 is a sectional view of the main part of a switching valve equipped with a spool, and FIG. 6 is a main part of a spool provided with a notch. FIG. 7 is a corresponding partial front view, and FIG. 7 is a sectional view of the spool corresponding to FIG. 2 taken along the notch. 1... Spool, 2, 6... Spiral groove, 3... Land portion, 4... Switching portion.

Claims

[Scope of utility model registration request]

A spool consisting of a land portion that fits into the inner periphery of the sleeve and a switching portion formed in a valley of the land portion, characterized in that a spiral groove continuous to the switching portion is cut into the land portion. spool.