JPS57164849A - Negative pressure type booster for vehicle - Google Patents

Negative pressure type booster for vehicle

Info

Publication number
JPS57164849A
JPS57164849A JP56050816A JP5081681A JPS57164849A JP S57164849 A JPS57164849 A JP S57164849A JP 56050816 A JP56050816 A JP 56050816A JP 5081681 A JP5081681 A JP 5081681A JP S57164849 A JPS57164849 A JP S57164849A
Authority
JP
Japan
Prior art keywords
arc shaped
thickness
wall
vehicle
negative 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.)
Granted
Application number
JP56050816A
Other languages
Japanese (ja)
Other versions
JPS5943342B2 (en
Inventor
Hiroo Takeuchi
Nobuaki Hachiro
Yoshihisa Miyazaki
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.)
Nissin Kogyo Co Ltd
Original Assignee
Nissin Kogyo Co 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 Nissin Kogyo Co Ltd filed Critical Nissin Kogyo Co Ltd
Priority to JP56050816A priority Critical patent/JPS5943342B2/en
Priority to GB8132799A priority patent/GB2089916B/en
Priority to US06/317,011 priority patent/US4434707A/en
Publication of JPS57164849A publication Critical patent/JPS57164849A/en
Publication of JPS5943342B2 publication Critical patent/JPS5943342B2/en
Expired 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
    • B60T13/241—Differential pressure systems
    • B60T13/242—The control valve is provided as one unit with the servomotor cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

PURPOSE:To improve durability of a rolling diaphragm by making the thickness of an arc shaped outer wall of the rolling diaphragm thicker than the thickness of a straight outer wall, and avoiding the occurrence of the fracture in an arc shaped rolling part even though a tensile force is acted in the circumferential direction. CONSTITUTION:The thickness of the arc shaped outer wall 13 of an rolling diaphragm 11, which separates the inside of a booster shell 1 into a first front actuating chamber A and a second rear actuating chamber B, is made thicker the thickness of the straight outer wall 12. When a booster piston 6 is advanced, the arc shaped rolling part R2 is rolled, and the part of a point (a) is contacted with an inner surface of a booster shell 1 as shown by a point (a'). Therefore the tensile force is acted on the arc shaped rolling part R2 in the circumferential direction. Since the thickness of the arc shaped outer wall is made thick, the arc shaped rolling part R2 is not fractured.
JP56050816A 1980-11-19 1981-04-04 Negative pressure booster for vehicles Expired JPS5943342B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56050816A JPS5943342B2 (en) 1981-04-04 1981-04-04 Negative pressure booster for vehicles
GB8132799A GB2089916B (en) 1980-11-19 1981-10-30 Vacuum vehicle brake booster
US06/317,011 US4434707A (en) 1980-11-19 1981-11-02 Vacuum type brake booster device for vehicular use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56050816A JPS5943342B2 (en) 1981-04-04 1981-04-04 Negative pressure booster for vehicles

Publications (2)

Publication Number Publication Date
JPS57164849A true JPS57164849A (en) 1982-10-09
JPS5943342B2 JPS5943342B2 (en) 1984-10-22

Family

ID=12869286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56050816A Expired JPS5943342B2 (en) 1980-11-19 1981-04-04 Negative pressure booster for vehicles

Country Status (1)

Country Link
JP (1) JPS5943342B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018441A (en) * 1983-07-11 1985-01-30 Jidosha Kiki Co Ltd Brake booster

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6873291B1 (en) 2020-02-05 2021-05-19 雪印メグミルク株式会社 Sleep-promoting compositions and foods, medicines, feeds containing the compositions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018441A (en) * 1983-07-11 1985-01-30 Jidosha Kiki Co Ltd Brake booster
JPH0356228B2 (en) * 1983-07-11 1991-08-27

Also Published As

Publication number Publication date
JPS5943342B2 (en) 1984-10-22

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