JPS5551649A - Two-stage action master cylinder - Google Patents

Two-stage action master cylinder

Info

Publication number
JPS5551649A
JPS5551649A JP12303578A JP12303578A JPS5551649A JP S5551649 A JPS5551649 A JP S5551649A JP 12303578 A JP12303578 A JP 12303578A JP 12303578 A JP12303578 A JP 12303578A JP S5551649 A JPS5551649 A JP S5551649A
Authority
JP
Japan
Prior art keywords
reservoir
valve
pressure chamber
low pressure
master cylinder
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.)
Granted
Application number
JP12303578A
Other languages
Japanese (ja)
Other versions
JPS6114978B2 (en
Inventor
Ichiro Ishiwatari
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.)
Nabco Ltd
Original Assignee
Nabco 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 Nabco Ltd filed Critical Nabco Ltd
Priority to JP12303578A priority Critical patent/JPS5551649A/en
Publication of JPS5551649A publication Critical patent/JPS5551649A/en
Publication of JPS6114978B2 publication Critical patent/JPS6114978B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

PURPOSE: To greatly simplify the construction of a drum-type brake which is equipped for an automobile wheel, by providing a change-over valve having a valve piston and a valve member between a low pressure chamber and a reservoir.
CONSTITUTION: A cylinder body 1 has a stepped cylinder opening 2 which comprises a small-diameter front cylinder hole 3 and a large-diameter rear cylinder hole 4. A change-over valve having a valve piston 62 and a vlave member 67 is provided between a low pressure chamber 12 and a reservoir 24 to disconnect the low pressure chamber 12 from the reservoir 24 at the starting of action of a master cylinder or connect the chamber 12 to the reservoir 24. Therefore, a valve for disconnecting the low pressure chamber 12 from the reservoir 24 at the starting of action of the master cylinder and a valve for connecting the chamber 12 to the reservoir 24 when the liquid pressure in a high pressure chamber 11 is higher than a prescribed level do not need to be separately provided. This results in greatly simplifying the construction.
COPYRIGHT: (C)1980,JPO&Japio
JP12303578A 1978-10-04 1978-10-04 Two-stage action master cylinder Granted JPS5551649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12303578A JPS5551649A (en) 1978-10-04 1978-10-04 Two-stage action master cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12303578A JPS5551649A (en) 1978-10-04 1978-10-04 Two-stage action master cylinder

Publications (2)

Publication Number Publication Date
JPS5551649A true JPS5551649A (en) 1980-04-15
JPS6114978B2 JPS6114978B2 (en) 1986-04-22

Family

ID=14850589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12303578A Granted JPS5551649A (en) 1978-10-04 1978-10-04 Two-stage action master cylinder

Country Status (1)

Country Link
JP (1) JPS5551649A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249040A (en) * 2001-02-26 2002-09-03 Tokico Ltd Master cylinder
KR100495757B1 (en) * 2001-02-26 2005-06-16 가부시끼가이샤 히다치 세이사꾸쇼 Master cylinder
JP2008222214A (en) * 2007-03-08 2008-09-25 Ap Racing Ltd Differential hydraulic master cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249040A (en) * 2001-02-26 2002-09-03 Tokico Ltd Master cylinder
KR100495757B1 (en) * 2001-02-26 2005-06-16 가부시끼가이샤 히다치 세이사꾸쇼 Master cylinder
JP4703867B2 (en) * 2001-02-26 2011-06-15 日立オートモティブシステムズ株式会社 Master cylinder
JP2008222214A (en) * 2007-03-08 2008-09-25 Ap Racing Ltd Differential hydraulic master cylinder

Also Published As

Publication number Publication date
JPS6114978B2 (en) 1986-04-22

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