AU2003298114A1 - Master cylinder with reduced application stroke - Google Patents

Master cylinder with reduced application stroke

Info

Publication number
AU2003298114A1
AU2003298114A1 AU2003298114A AU2003298114A AU2003298114A1 AU 2003298114 A1 AU2003298114 A1 AU 2003298114A1 AU 2003298114 A AU2003298114 A AU 2003298114A AU 2003298114 A AU2003298114 A AU 2003298114A AU 2003298114 A1 AU2003298114 A1 AU 2003298114A1
Authority
AU
Australia
Prior art keywords
seal
master cylinder
piston
pressure chamber
front pressure
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.)
Abandoned
Application number
AU2003298114A
Inventor
Pierre Lebret
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of AU2003298114A1 publication Critical patent/AU2003298114A1/en
Abandoned 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/228—Pressure-maintaining arrangements, e.g. for replenishing the master cylinder chamber with fluid from a reservoir
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/236—Piston sealing arrangements

Abstract

The tandem master cylinder (10) comprises a bore (14) in which axial primary (16) and secondary pistons slide. There are seals (48) in contact with each piston delimiting a rear supply chamber (56) and a front pressure chamber (58). Each piston comprises a drilling emerging in its periphery and in its bore (78) which forms a valve (82) for isolating the front pressure chamber when it clears the seal and thus allows the establishment of a braking pressure. The front pressure chamber of each piston comprises a tubular element (90) which can be disengaged inside the associated piston and which extends axially behind the seal in order to seal the drilling along its reduced travel.
AU2003298114A 2002-11-22 2003-11-14 Master cylinder with reduced application stroke Abandoned AU2003298114A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0214779A FR2847538B1 (en) 2002-11-22 2002-11-22 MASTER CYLINDER WITH REDUCED APPLICATION RUN
FR02/14779 2002-11-22
PCT/EP2003/012748 WO2004048175A1 (en) 2002-11-22 2003-11-14 Master cylinder with reduced application stroke

Publications (1)

Publication Number Publication Date
AU2003298114A1 true AU2003298114A1 (en) 2004-06-18

Family

ID=32241593

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003298114A Abandoned AU2003298114A1 (en) 2002-11-22 2003-11-14 Master cylinder with reduced application stroke

Country Status (6)

Country Link
EP (1) EP1565366B1 (en)
AT (1) ATE352463T1 (en)
AU (1) AU2003298114A1 (en)
DE (1) DE60311515D1 (en)
FR (1) FR2847538B1 (en)
WO (1) WO2004048175A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114810874B (en) * 2022-05-13 2024-04-26 浙江奔腾智能制动系统有限公司 Plunger type brake master cylinder suitable for single-cavity structure of tractor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0217203A (en) * 1988-07-05 1990-01-22 Jidosha Kiki Co Ltd Fluid actuator
JP2898388B2 (en) * 1990-09-28 1999-05-31 自動車機器株式会社 Tandem type master cylinder
DE19537038B4 (en) * 1995-10-05 2006-05-24 Stephan Thies Master cylinder
JP2002255020A (en) * 2001-02-27 2002-09-11 Aisin Seiki Co Ltd Master cylinder

Also Published As

Publication number Publication date
EP1565366B1 (en) 2007-01-24
EP1565366A1 (en) 2005-08-24
WO2004048175A1 (en) 2004-06-10
FR2847538A1 (en) 2004-05-28
ATE352463T1 (en) 2007-02-15
FR2847538B1 (en) 2005-02-25
DE60311515D1 (en) 2007-03-15

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase