JPS6179073U

JPS6179073U -

Info

Publication number: JPS6179073U
Application number: JP16300784U
Authority: JP
Priority date: 1984-10-30
Filing date: 1984-10-30
Publication date: 1986-05-27

Description

[Brief explanation of drawings]

第１図ａは本考案のノズル開閉用ピストン弁を
構成するピストン部分の正面図、第１図ｂは第１
図ａのＡ−Ａ断面図、第１図ｃは第１図ａのＢ−
Ｂ断面図、第２図乃至第４図は本考案に係るピス
トン部分に嵌着される弁ゴムの実施態様を示し、
各図のａは正面図、ｂは側面図を示す。第５図ａ
は本考案に係るピストン成型用の金型の概略断面
図、第５図ｂは第５図ａのＣ−Ｃ断面図を示す。
又第６図乃至第８図は従来のノズル開閉用ピスト
ン弁の説明図である。１……ピストン本体、２……開口筒、３……凹
部、４……円弧状突起、７……弁ゴム本体、８…
…弁ゴム上面、９……弁ゴム底面、１２……円柱
、１３……鍔。 Figure 1a is a front view of the piston part constituting the nozzle opening/closing piston valve of the present invention, and Figure 1b is a front view of the piston part of the piston valve for opening and closing the nozzle of the present invention.
AA sectional view in Figure a, Figure 1 c is B-- in Figure 1 a.
B sectional view and FIGS. 2 to 4 show embodiments of the valve rubber fitted to the piston part according to the present invention,
In each figure, a shows a front view, and b shows a side view. Figure 5a
5 is a schematic cross-sectional view of a mold for molding a piston according to the present invention, and FIG. 5b is a cross-sectional view taken along the line CC in FIG. 5a.
6 to 8 are explanatory diagrams of conventional piston valves for opening and closing nozzles. DESCRIPTION OF SYMBOLS 1... Piston body, 2... Open cylinder, 3... Recessed part, 4... Arc-shaped projection, 7... Valve rubber body, 8...
... Valve rubber top surface, 9... Valve rubber bottom surface, 12... Cylinder, 13... Tsuba.

Claims

[Scope of utility model registration request]

In a nozzle opening/closing piston valve in which an open tube is formed at the tip of the piston and a valve rubber is fitted into the open tube, a plurality of circular arc-shaped protrusions are arranged at equal intervals on the periphery of the tip of the open tube. Protrude inward,
A valve rubber having a top surface diameter approximately equal to the inner diameter of the opening tube and a bottom surface diameter approximately equal to the diameter of the opening surface formed by the edge of the arcuate projection is fitted into the opening tube. A piston valve for opening and closing a nozzle, which is characterized by: