JPS5675255A - Brake booster - Google Patents

Brake booster

Info

Publication number
JPS5675255A
JPS5675255A JP15218979A JP15218979A JPS5675255A JP S5675255 A JPS5675255 A JP S5675255A JP 15218979 A JP15218979 A JP 15218979A JP 15218979 A JP15218979 A JP 15218979A JP S5675255 A JPS5675255 A JP S5675255A
Authority
JP
Japan
Prior art keywords
ball
power piston
recess
piston
control piston
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.)
Pending
Application number
JP15218979A
Other languages
Japanese (ja)
Inventor
Masayoshi Katagiri
Osamu Ogura
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.)
Toyota Motor Corp
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Toyota Motor Corp
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 Aisin Seiki Co Ltd, Toyota Motor Corp filed Critical Aisin Seiki Co Ltd
Priority to JP15218979A priority Critical patent/JPS5675255A/en
Priority to DE19803040731 priority patent/DE3040731C2/en
Publication of JPS5675255A publication Critical patent/JPS5675255A/en
Pending legal-status Critical Current

Links

Landscapes

  • Braking Systems And Boosters (AREA)

Abstract

PURPOSE: To simplify the construction of a brake booster and heighten its reliability, by transmitting a reaction force to both a ball retainer and a control piston but not to a power piston when the power piston is in its expanded position.
CONSTITUTION: When a power piston 4 is at its expansion end, the backward motion of a ball retainer 43 is blocked by the engagement of a ball 44 with a slope provided on the front part of a control piston 4. For that reason, the power piston 4 is not pushed back even after an energizing force reaches a limit. An idle stroke is thus prevented. A recess for the ball 44 has a bow-shaped cross section and extends toward the axes of the control piston 9 and the power piston 4 so that the ball 44 and the surface of the recess are in linear contact with each other. The contact pressure between the ball 44 and the surface of the recess is thus held down. This results in preventing both pistons 4, 9 from moving relative to each other.
COPYRIGHT: (C)1981,JPO&Japio
JP15218979A 1979-11-21 1979-11-24 Brake booster Pending JPS5675255A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15218979A JPS5675255A (en) 1979-11-24 1979-11-24 Brake booster
DE19803040731 DE3040731C2 (en) 1979-11-21 1980-10-29 Brake booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15218979A JPS5675255A (en) 1979-11-24 1979-11-24 Brake booster

Publications (1)

Publication Number Publication Date
JPS5675255A true JPS5675255A (en) 1981-06-22

Family

ID=15535001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15218979A Pending JPS5675255A (en) 1979-11-21 1979-11-24 Brake booster

Country Status (1)

Country Link
JP (1) JPS5675255A (en)

Similar Documents

Publication Publication Date Title
JPS5675250A (en) Brake booster
JPS5325771A (en) Oil pressure anti-skid device
JPS55156759A (en) Brake booster with detecting device for abrasion of brake lining
JPS56154356A (en) Master cylinder
JPS5675255A (en) Brake booster
JPS54145867A (en) Hydraulic control valve
FR2372350A1 (en) Rail vehicle pressure brake mechanism - has ramp with steeper face for application and shallower one for parking
JPS54111061A (en) Pneumatic pressure type booster
JPS56112355A (en) Brake booster
JPS5695756A (en) Brake booster
JPS568749A (en) Negative pressure type servo unit
JPS5671661A (en) Brake booster for automobile
JPS5572445A (en) Deceleration sensing multiple break point load response brake pressure control valve
JPS57102578A (en) Reciprocating pump
JPS5675256A (en) Brake booster
JPS537809A (en) Vacuum increasing apparatus
JPS5320070A (en) Air-over hydraulic booster
KR100822268B1 (en) Compressed air brake booster with improved braking variation law
JPS55160646A (en) Brake cylinder
JPS5751559A (en) Brake booster
JPS5522584A (en) Negative pressure type booster equipment
JPS57114755A (en) Negative pressure multiplier
JPS5487359A (en) Brake booster
JPS55123382A (en) Liquid suction and ejecting apparatus
JPS5350508A (en) Operation strength selecting device for hand pump