JPH01113601U

JPH01113601U -

Info

Publication number: JPH01113601U
Application number: JP793988U
Authority: JP
Priority date: 1988-01-25
Filing date: 1988-01-25
Publication date: 1989-07-31

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す側断面図、第２
図乃至第４図は作動状態を示す各側断面図、第５
図は従来構造を示す側断面図である。１……第１カバー、２……第１ダイアフラム、
３……大気室、４……第１負圧室、７……作動ロ
ツド、９……区画壁、１０……第１スプリング、
１１……第１負圧導入管、１５……第２カバー、
１６……第２ダイアフラム、１７……室、１８…
…第２負圧室、２１……ロツド、２２……第２ス
プリング、２４……バルブ、２５……第３スプリ
ング、２６……第２負圧導入管、３０……第３負
圧導入管。 Fig. 1 is a side sectional view showing an embodiment of the present invention;
Figures 4 through 4 are side sectional views showing the operating state, and Figure 5.
The figure is a side sectional view showing a conventional structure. 1...first cover, 2...first diaphragm,
3... Atmospheric chamber, 4... First negative pressure chamber, 7... Actuation rod, 9... Partition wall, 10... First spring,
11...First negative pressure introduction pipe, 15...Second cover,
16...second diaphragm, 17...chamber, 18...
...Second negative pressure chamber, 21...Rod, 22...Second spring, 24...Valve, 25...Third spring, 26...Second negative pressure introduction pipe, 30...Third negative pressure introduction pipe .

Claims

[Scope of utility model registration request]

A first cover 1 containing a first diaphragm 2 and a second cover 1 containing a second diaphragm 16
5 are connected in series between them via a partition wall 9, and a first negative pressure chamber 4 is provided between the first diaphragm 2 and the partition wall 9. 1 spring 10 is provided, a chamber 17 communicating with the first negative pressure chamber 4 is provided between the second diaphragm 16 and the partition wall 9, and the first diaphragm 2
An atmospheric chamber 3 is provided on the other side, and a second diaphragm 1
A second negative pressure chamber 18 and a second spring 22 for pressing the second diaphragm 16 are provided on the other side of the diaphragm 6, an actuating rod 7 is provided at the center of the first diaphragm 2, and a second spring 22 is provided at the center of the second diaphragm 16. A rod 21 facing away from the first diaphragm 2 and a valve 24 located on the second negative pressure chamber 18 side and movable back and forth by being pressed by a third spring 25 are provided, respectively. A first negative pressure introducing pipe 11 communicating with the first negative pressure chamber 4 is provided, and a second negative pressure chamber 18 is provided on the second cover 15 at a position facing the valve 24.
A diaphragm device characterized in that a second negative pressure introduction pipe 26 that enters and communicates with the valve 24 and a third negative pressure introduction pipe 30 that communicates with the second negative pressure chamber 18 at a position that does not interfere with the valve 24 are provided. .