JPH02123459U - - Google Patents
Info
- Publication number
- JPH02123459U JPH02123459U JP3170289U JP3170289U JPH02123459U JP H02123459 U JPH02123459 U JP H02123459U JP 3170289 U JP3170289 U JP 3170289U JP 3170289 U JP3170289 U JP 3170289U JP H02123459 U JPH02123459 U JP H02123459U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- pressure chamber
- piston body
- pressure
- chamber side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 210000000078 claw Anatomy 0.000 claims description 2
Landscapes
- Braking Systems And Boosters (AREA)
Description
第１図は本考案に従つた負圧式倍力装置の一実
施例を示す断面図、第２図は第１図に示すプレツ
シヤプレートの斜視図である。
１０……負圧式倍力装置、１１……ボデイ、１
５……ダイアフラム、１５ａ……内周縁部、１５
ｂ……外周縁部、１５ｃ……環状溝、１６……定
圧室、１７……変圧室、１８……ピストンボデイ
、１８ｃ……フランジ部、１８ｄ……環状溝、１
９……プレツシヤプレート、１９ａ……折返し部
、１９ｂ……係止爪部、２３……制御弁。
FIG. 1 is a sectional view showing an embodiment of the negative pressure booster according to the present invention, and FIG. 2 is a perspective view of the pressure plate shown in FIG. 1. 10... Negative pressure booster, 11... Body, 1
5...Diaphragm, 15a...Inner peripheral edge, 15
b...outer peripheral edge, 15c...annular groove, 16...constant pressure chamber, 17...variable pressure chamber, 18...piston body, 18c...flange portion, 18d...annular groove, 1
9... Pressure plate, 19a... Turned portion, 19b... Locking claw portion, 23... Control valve.
Claims (1)
プレートの内周部にて該ダイアフラムの内周縁部
をピストンボデイに気密的に組付けると共に、前
記ダイアフラムの外周縁部をボデイに気密的に組
付けて、該ボデイ内における前記ダイアフラムの
一側に常時負圧が付与される定圧室を形成すると
共に前記ダイアフラムの他側に前記ピストンボデ
イに設けた制御弁によつて前記定圧室または大気
に選択的に連通する変圧室を形成してなる負圧式
倍力装置において、前記プレツシヤプレートの内
周部にその外周部に向けて折返されて前記ダイア
フラムの内周縁部を前記ピストンボデイに気密的
に組付けると共に前記ピストンボデイの前記変圧
室側の面に係止される折返し部を形成し、前記折
返し部の自由端部に前記定圧室側に折曲げられて
前記ピストンボデイの前記定圧室側の面に係止さ
れる複数個の係止爪部を一体に形成したことを特
徴とする負圧式倍力装置。 The inner peripheral edge of the diaphragm is hermetically assembled to the piston body using the inner peripheral part of a pressure plate provided along one side of the diaphragm, and the outer peripheral edge of the diaphragm is hermetically assembled to the body. A constant pressure chamber to which negative pressure is constantly applied is formed on one side of the diaphragm in the body, and a control valve provided in the piston body selectively applies pressure to the constant pressure chamber or the atmosphere on the other side of the diaphragm. In a negative pressure booster formed with a variable pressure chamber communicating with the pressure plate, the pressure plate is folded back toward its outer circumference so that the inner circumference of the diaphragm is airtightly attached to the piston body. When assembled, a folded part is formed to be locked to the variable pressure chamber side surface of the piston body, and a folded part is formed at the free end of the folded part to be bent toward the constant pressure chamber side, so that the fixed pressure chamber side surface of the piston body is bent toward the constant pressure chamber side. A negative pressure booster characterized by integrally forming a plurality of locking claws that lock on a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3170289U JPH02123459U (en) | 1989-03-21 | 1989-03-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3170289U JPH02123459U (en) | 1989-03-21 | 1989-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123459U true JPH02123459U (en) | 1990-10-11 |
Family
ID=31257755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3170289U Pending JPH02123459U (en) | 1989-03-21 | 1989-03-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123459U (en) |
-
1989
- 1989-03-21 JP JP3170289U patent/JPH02123459U/ja active Pending