GB2000237A - Improvements in servo booster assemblies - Google Patents

Improvements in servo booster assemblies

Info

Publication number
GB2000237A
GB2000237A GB7826738A GB7826738A GB2000237A GB 2000237 A GB2000237 A GB 2000237A GB 7826738 A GB7826738 A GB 7826738A GB 7826738 A GB7826738 A GB 7826738A GB 2000237 A GB2000237 A GB 2000237A
Authority
GB
United Kingdom
Prior art keywords
thrust
plates
output
thrust assemblies
assembly
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
GB7826738A
Other versions
GB2000237B (en
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Priority to GB7826738A priority Critical patent/GB2000237B/en
Publication of GB2000237A publication Critical patent/GB2000237A/en
Application granted granted Critical
Publication of GB2000237B publication Critical patent/GB2000237B/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
    • B60T13/12—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 liquid
    • B60T13/14—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 liquid using accumulators or reservoirs fed by pumps
    • B60T13/142—Systems with master cylinder
    • B60T13/143—Master cylinder mechanically coupled with booster
    • 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
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/573—Vacuum systems indirect, i.e. vacuum booster units characterised by reaction devices

Landscapes

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

Abstract

Servo boosters for vehicle hydraulic braking systems are described which incorporate a novel arrangement for providing an increasing reaction force on the input member in response to an increasing output force. In the novel arrangement a first thrust assembly 20 is interposed between the input member 22 and the output member 23, and a second thrust assembly 21 is interposed between the movable wall 4 of the booster, which may be a diaphragm or a piston, and the output member 23. The thrust assemblies 20, 21 each generally consist of two rotatable parallel plates 26, 27, 35 having inclined ramp surfaces on opposed faces co-operating with balls 28 or rollers located between the plates. In the constructions disclosed a single plate 27 is common to both thrust assemblies. Corresponding plates of the two thrust assemblies are either keyed together or integral. Axial forces between the members generate torques in the thrust assemblies and since the torques must balance each other as a result of the connections between the plates a fixed relationship is maintained between the input and output forces and the force exerted by the movable wall. The rotatable assembly may actuate a boost control valve. <IMAGE>
GB7826738A 1977-06-11 1978-06-12 Improvements in servo booster assemblies Expired GB2000237B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7826738A GB2000237B (en) 1977-06-11 1978-06-12 Improvements in servo booster assemblies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2446277 1977-06-11
GB7826738A GB2000237B (en) 1977-06-11 1978-06-12 Improvements in servo booster assemblies

Publications (2)

Publication Number Publication Date
GB2000237A true GB2000237A (en) 1979-01-04
GB2000237B GB2000237B (en) 1982-02-17

Family

ID=26257131

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826738A Expired GB2000237B (en) 1977-06-11 1978-06-12 Improvements in servo booster assemblies

Country Status (1)

Country Link
GB (1) GB2000237B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446937A1 (en) * 1979-01-17 1980-08-14 Nissan Motor HYDRAULIC AMPLIFIER, FOR AUTOMOTIVE MACHINE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446937A1 (en) * 1979-01-17 1980-08-14 Nissan Motor HYDRAULIC AMPLIFIER, FOR AUTOMOTIVE MACHINE

Also Published As

Publication number Publication date
GB2000237B (en) 1982-02-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee