JPH0441453U - - Google Patents
Info
- Publication number
- JPH0441453U JPH0441453U JP8428290U JP8428290U JPH0441453U JP H0441453 U JPH0441453 U JP H0441453U JP 8428290 U JP8428290 U JP 8428290U JP 8428290 U JP8428290 U JP 8428290U JP H0441453 U JPH0441453 U JP H0441453U
- Authority
- JP
- Japan
- Prior art keywords
- port
- chamber
- piston boss
- negative pressure
- booster
- 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
- 238000005192 partition Methods 0.000 claims description 4
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/563—Vacuum systems indirect, i.e. vacuum booster units with multiple booster units, e.g. tandem booster units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Description
図面は本考案の一実施例を示すもので、第１図
はタンデム型負圧ブースタの休止状態での縦断側
面図、第２図及び第３図は第１図の−線及び
−線断面図、第４図は同負圧ブースタの作動
状態を示す部分縦断側面図である。
１……ブースタシエル、１ｃ……隔壁板、２…
…前部シエル室、２ａ……前部負圧室、２ｂ……
前部作動室、３……後部シエル室、３ａ……後部
負圧室、３ｂ……後部作動室、４……前部ブース
タピストン、５……前部ダイヤフラム、６……後
部ブースタピストン、７……後部ダイヤフラム、
１０……ピストンボス、１２……スリーブ、１４
……第１ポート、１５……第２ポート、１６……
環状シール部材（Ｏリング）、２５……弁筒、３
２……制御弁、３５……入力杆、５３……出力杆
。
The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional side view of a tandem negative pressure booster in a rest state, and FIGS. 2 and 3 are sectional views taken along lines - and - in FIG. 1. , FIG. 4 is a partial longitudinal sectional side view showing the operating state of the negative pressure booster. 1... Booster shell, 1c... Partition plate, 2...
...Front shell chamber, 2a...Front negative pressure chamber, 2b...
Front working chamber, 3... Rear shell chamber, 3a... Rear negative pressure chamber, 3b... Rear working chamber, 4... Front booster piston, 5... Front diaphragm, 6... Rear booster piston, 7 ...rear diaphragm,
10...Piston boss, 12...Sleeve, 14
...1st port, 15...2nd port, 16...
Annular seal member (O ring), 25... Valve cylinder, 3
2...control valve, 35...input rod, 53...output rod.
Claims (1)
２と後部シエル室３とに仕切る隔壁板１ｃを固設
し、前部シエル室２を前側の前部負圧室２ａと後
側の前部作動室２ｂとに区画する前部ブースタピ
ストン４及びその後面に重合される前部ダイヤフ
ラム５と、後部シエル室３を前側の後部負圧室３
ａと後側の後部作動室３ｂとに区画する後部ブー
スタピストン６及びその後面に重合される後部ダ
イヤフラム７とを、前記隔壁板１ｃを貫通して出
力杆５３に連なるピストンボス１０の前部及び後
部に、そのピストンボス１０の外周に嵌合するス
リーブ１２を介して気密に固定し、前記ピストン
ボス１０の後端に連設されてブースタシエル１の
後壁に摺動自在に支承される弁筒２５内に、前後
動可能の入力杆３５と、この入力杆３５の前後動
に応じて両作動室２ｂ，３ｂを第１ポート１４を
介して大気に連通させ、また両作動室２ｂ，３ｂ
を前記第１ポート１４および第２ポート１５を介
して両負圧室２ａ，３ａに連通させる制御弁３２
とを配設したタンデム型負圧ブースタであつて、 第１ポート１４及び第２ポート１５をピストン
ボス１０とスリーブ１２の両者にわたつて形成す
ると共に、ピストンボス１０とスリーブ１２の接
合面の軸方向中間部に単一の環状シール部材１６
を装着し、この環状シール部材１６の前後におい
て第１ポート１４と第２ポート１５が前記接合面
を通過することを特徴とする、タンデム型負圧ブ
ースタ。[Claims for Utility Model Registration] A partition plate 1c is fixed to the booster shell 1 to partition the inside thereof into a front shell chamber 2 and a rear shell chamber 3, and the front shell chamber 2 is divided into a front negative pressure chamber on the front side. 2a and a front working chamber 2b on the rear side; a front diaphragm 5 superimposed on the rear surface; and a rear shell chamber 3 and a rear negative pressure chamber 3 on the front side.
The front part of the piston boss 10 which passes through the partition wall plate 1c and is connected to the output rod 53, is connected to the rear booster piston 6 and the rear diaphragm 7 which are superimposed on the rear surface thereof. A valve is airtightly fixed to the rear part of the piston boss 10 via a sleeve 12 that fits around the outer periphery of the piston boss 10, and is connected to the rear end of the piston boss 10 and slidably supported on the rear wall of the booster shell 1. Inside the cylinder 25, there is an input rod 35 that can move back and forth, and according to the back and forth movement of the input rod 35, both working chambers 2b and 3b are communicated with the atmosphere through the first port 14, and both working chambers 2b and 3b are connected to the atmosphere through the first port 14.
a control valve 32 that communicates with both the negative pressure chambers 2a and 3a via the first port 14 and the second port 15;
The first port 14 and the second port 15 are formed across both the piston boss 10 and the sleeve 12, and the axis of the joint surface of the piston boss 10 and the sleeve 12 is A single annular seal member 16 in the direction intermediate portion
A tandem type negative pressure booster, characterized in that the first port 14 and the second port 15 pass through the joint surface before and after the annular seal member 16.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8428290U JPH0441453U (en) | 1990-08-09 | 1990-08-09 | |
| GB9117116A GB2247291B (en) | 1990-08-09 | 1991-08-08 | Tandem-type vacuum booster |
| US07/966,578 US5277100A (en) | 1990-08-09 | 1992-10-26 | Tandem type vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8428290U JPH0441453U (en) | 1990-08-09 | 1990-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0441453U true JPH0441453U (en) | 1992-04-08 |
Family
ID=13826106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8428290U Pending JPH0441453U (en) | 1990-08-09 | 1990-08-09 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0441453U (en) |
| GB (1) | GB2247291B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63301161A (en) * | 1987-05-30 | 1988-12-08 | Nissin Kogyo Kk | Tandem type negative pressure booster |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512237A (en) * | 1982-01-16 | 1985-04-23 | Jidosha Kiki Co., Ltd. | Tandem type brake power servo booster |
| DE3303577A1 (en) * | 1983-02-03 | 1984-08-09 | Alfred Teves Gmbh, 6000 Frankfurt | BRAKE POWER AMPLIFIER FOR A MOTOR VEHICLE |
| JPS6062363A (en) * | 1983-09-14 | 1985-04-10 | 重藤 和已 | Multi-functional panel |
| JPH0662363A (en) * | 1992-08-13 | 1994-03-04 | Sony Corp | Video disk player |
-
1990
- 1990-08-09 JP JP8428290U patent/JPH0441453U/ja active Pending
-
1991
- 1991-08-08 GB GB9117116A patent/GB2247291B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63301161A (en) * | 1987-05-30 | 1988-12-08 | Nissin Kogyo Kk | Tandem type negative pressure booster |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2247291B (en) | 1994-07-13 |
| GB9117116D0 (en) | 1991-09-25 |
| GB2247291A (en) | 1992-02-26 |