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1. WO2007145348 - NEGATIVE PRESSURE BOOSTER

Publication Number WO/2007/145348
Publication Date 21.12.2007
International Application No. PCT/JP2007/062188
International Filing Date 11.06.2007
IPC
B60T 13/57 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE 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
13Transmitting 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
10with fluid assistance, drive, or release
24the fluid being gaseous
46Vacuum systems
52indirect, i.e. vacuum booster units
57characterised by constructional features of control valves
B60T 13/573 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE 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
13Transmitting 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
10with fluid assistance, drive, or release
24the fluid being gaseous
46Vacuum systems
52indirect, i.e. vacuum booster units
573characterised by reaction devices
CPC
B60T 13/575
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
13Transmitting 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
10with fluid assistance, drive, or release
24the fluid being gaseous
46Vacuum systems
52indirect, i.e. vacuum booster units
573characterised by reaction devices
575using resilient discs or pads
Applicants
  • ボッシュ株式会社 BOSCH CORPORATION [JP]/[JP] (AllExceptUS)
  • 渡部悟 WATANABE, Satoru [JP]/[JP] (UsOnly)
Inventors
  • 渡部悟 WATANABE, Satoru
Agents
  • 青木健二 AOKI, Kenji
Priority Data
2006-16223612.06.2006JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) NEGATIVE PRESSURE BOOSTER
(FR) SERVOFREIN À DÉPRESSION
(JA) 負圧倍力装置
Abstract
(EN)
In operation of a negative pressure booster, a reaction disk (35) is deflected by reaction force from an output shaft (34) to press a pin (28) rearward and the pin (28) presses a vacuum valve seat member (21) rearward via an arm (25). Then, the vacuum valve seat member (21) knocks a valve body (15) rearward via a vacuum valve section (17), causing an atmosphere valve section (16) to move rearward relative to a valve body (4). Because an atmosphere valve (20) and a vacuum valve (23) move rearward, the stroke of an input shaft (11) is reduced. Also, when the valve body (15) is knocked rearward, the position of balance between the atmosphere valve (20) and the vacuum valve (23) moves rearward according to an output (input). This reduces the stroke of an input member when a large output is produced.
(FR)
Dans le fonctionnement d'un servofrein à dépression, une force de réaction provenant d'un arbre de sortie (34) dévie un disque de réaction (35) qui appuie vers l'arrière sur une clavette (28) et ladite clavette (28) appuie vers l'arrière sur un élément de siège (21) de soupape de dépression par l'intermédiaire d'un bras (25). Alors, l'élément de siège (21) de soupape de dépression frappe vers l'arrière un corps (15) de soupape par l'intermédiaire d'une section de soupape de dépression (17), obligeant une section de soupape de mise à l'air libre (16) à reculer par rapport à un corps (4) de soupape. Parce qu'une soupape de mise à l'air libre (20) et une soupape de dépression (23) reculent, le coup d'un arbre d'entrée (11) est réduit. Également, quand le corps (15) de soupape est frappé en arrière, la position d'équilibre entre la soupape de mise à l'air libre (20) et la soupape de dépression (23) recule selon une sortie (entrée). Cela réduit le coup d'un élément d'entrée quand est produite une grande sortie.
(JA)
本発明の負圧倍力装置は、作動時に、リアクションディスク(35)は出力軸(34)からの反力で撓んでピン(28)を後方に押圧し、ピン(28)がアーム(25)を介して真空弁座部材(21)を後方に押圧する。すると、真空弁座部材(21)が真空弁部(17)を介して弁体(15)を後方に突き上げるので、大気弁部(16)がバルブボディ(4)に対して後方に移動する。このように、大気弁(20)および真空弁(23)が後方に移動する分、入力軸(11)のストロークが短縮される。また、弁体(15)が後方に突き上げられることで、大気弁(20)および真空弁(23)のバランス位置が出力(入力)に応じて後方に移動する。これにより、大きな出力を発生するときの入力部材のストロークが短縮される。
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