ES8301786A1 - Servo boosters for vehicle braking systems - Google Patents

Servo boosters for vehicle braking systems

Info

Publication number
ES8301786A1
ES8301786A1 ES509527A ES509527A ES8301786A1 ES 8301786 A1 ES8301786 A1 ES 8301786A1 ES 509527 A ES509527 A ES 509527A ES 509527 A ES509527 A ES 509527A ES 8301786 A1 ES8301786 A1 ES 8301786A1
Authority
ES
Spain
Prior art keywords
diaphragm
plate
boot
sealed
end portion
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.)
Expired
Application number
ES509527A
Other languages
Spanish (es)
Other versions
ES509527A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of ES8301786A1 publication Critical patent/ES8301786A1/en
Publication of ES509527A0 publication Critical patent/ES509527A0/en
Granted legal-status Critical Current

Links

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
    • B60T13/567—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
    • B60T13/5675—Supportstruts
    • 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)

Abstract

In a servo booster of the kind in which a stationary force transmitting member 13 extends through the movable wall, which comprises a diaphragm 9 and a support plate 6, and the diaphragm is sealed to the member 13 by a flexible boot located about the member 13 with one end portion 21 sealed to the diaphragm 9, the support plate is deliberately made capable of parting from the diaphragm 9. This has been found to reduce substantially the risk of air becoming trapped between the plate 6 and diaphragm 9 during bleeding of the brakes, when a pressure differential is created between the front and rear chambers of the booster. Forward displacement of the plate 6 relative to the diaphragm 9 and boot end portion 21 is preferably limited by an abutment 25' on the boot. In a preferred arrangement excessive pressure build-up is prevented by venting between a surface 12' carried with the plate and a sealing surface, e.g. of a lip 47, carried with the diaphragm.
ES509527A 1981-02-12 1982-02-11 A REINFORCING SERVO FOR VEHICLE BRAKING SYSTEM. Granted ES509527A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8104328 1981-02-12
GB8113937 1981-05-07

Publications (2)

Publication Number Publication Date
ES8301786A1 true ES8301786A1 (en) 1982-12-16
ES509527A0 ES509527A0 (en) 1982-12-16

Family

ID=26278405

Family Applications (1)

Application Number Title Priority Date Filing Date
ES509527A Granted ES509527A0 (en) 1981-02-12 1982-02-11 A REINFORCING SERVO FOR VEHICLE BRAKING SYSTEM.

Country Status (6)

Country Link
AR (1) AR227086A1 (en)
BR (1) BR8200742A (en)
DE (1) DE3204549A1 (en)
ES (1) ES509527A0 (en)
FR (1) FR2499488B1 (en)
GB (1) GB2093136B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519295A (en) * 1983-06-02 1985-05-28 Allied Corporation Vacuum brake boosters
GB8726722D0 (en) * 1987-11-14 1987-12-16 Lucas Ind Plc Brake servo booster
JPH0547019Y2 (en) * 1989-04-11 1993-12-09
DE4344188A1 (en) * 1993-12-23 1995-06-29 Teves Gmbh Alfred Negative pressure brake booster for vehicle
DE19915941A1 (en) * 1999-02-12 2000-08-24 Continental Teves Ag & Co Ohg Pneumatic servo brake for motor vehicles has smooth sealing section on fastening component lying adjacent to adjusting section of adjustable stop
WO2000061416A1 (en) * 1999-04-09 2000-10-19 Continental Teves Ag & Co. Ohg Pneumatic brake booster

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270353A (en) * 1977-10-20 1981-06-02 Girling Limited Servo boosters for vehicle brake systems
JPS609939B2 (en) * 1981-07-01 1985-03-14 日信工業株式会社 Negative pressure booster

Also Published As

Publication number Publication date
DE3204549A1 (en) 1982-09-02
FR2499488A1 (en) 1982-08-13
FR2499488B1 (en) 1987-09-04
AR227086A1 (en) 1982-09-15
GB2093136B (en) 1984-08-30
GB2093136A (en) 1982-08-25
ES509527A0 (en) 1982-12-16
BR8200742A (en) 1982-12-21

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