JPS5628041A - Hydraulic booster - Google Patents

Hydraulic booster

Info

Publication number
JPS5628041A
JPS5628041A JP10473879A JP10473879A JPS5628041A JP S5628041 A JPS5628041 A JP S5628041A JP 10473879 A JP10473879 A JP 10473879A JP 10473879 A JP10473879 A JP 10473879A JP S5628041 A JPS5628041 A JP S5628041A
Authority
JP
Japan
Prior art keywords
piston
brake
valve
spring
main line
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
JP10473879A
Other languages
Japanese (ja)
Other versions
JPS6231666B2 (en
Inventor
Seiji Hamamatsu
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.)
Hitachi Ltd
Original Assignee
Tokico 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 Tokico Ltd filed Critical Tokico Ltd
Priority to JP10473879A priority Critical patent/JPS5628041A/en
Publication of JPS5628041A publication Critical patent/JPS5628041A/en
Publication of JPS6231666B2 publication Critical patent/JPS6231666B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

PURPOSE: To prevent the drag of a brake by providing a throttle valve made of a plate having elasticity in the main line.
CONSTITUTION: To constitute a throttle valve V3; a valve plate 26 made of a metal disc having elasticity is attached to the second piston 14 arranged in a main line comprising a hole 18 made in a cylindrical portion 17 of a plug 15 and a large- diameter space 12 and connecting an inlet 2 and an outlet 3 to each other. Thus, when the brake is not operated, the position of the second piston 14, which is energized by a spring 28, is regulated by the contact of the valve plate 26 with a step portion 29, and the position of a valve body 20, which is energized by a spring 25, is regulated by the contact of an expanded-diameter portion 23 with a valve seat 24, and moreover a spring 36 allows the first piston 13 to separate from the second piston 14, and a top portion 20' of the valve body 20 is separated from a valve seat 27. Consequently, an oil-hydraulic circuit to a brake cylinder is cut off from the main line, and made to communicate with a reservoir, so that no oil pressure affects the brake cylinder. Thus, the drag of the brake is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP10473879A 1979-08-17 1979-08-17 Hydraulic booster Granted JPS5628041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10473879A JPS5628041A (en) 1979-08-17 1979-08-17 Hydraulic booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10473879A JPS5628041A (en) 1979-08-17 1979-08-17 Hydraulic booster

Publications (2)

Publication Number Publication Date
JPS5628041A true JPS5628041A (en) 1981-03-19
JPS6231666B2 JPS6231666B2 (en) 1987-07-09

Family

ID=14388833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10473879A Granted JPS5628041A (en) 1979-08-17 1979-08-17 Hydraulic booster

Country Status (1)

Country Link
JP (1) JPS5628041A (en)

Also Published As

Publication number Publication date
JPS6231666B2 (en) 1987-07-09

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