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DE2019122B2 - Vehicle hydraulic brake servo - has narrow end of spacer tube passed through fixed wall to increase effective area of diaphragms - Google Patents

Vehicle hydraulic brake servo - has narrow end of spacer tube passed through fixed wall to increase effective area of diaphragms

Info

Publication number
DE2019122B2
DE2019122B2 DE19702019122 DE2019122A DE2019122B2 DE 2019122 B2 DE2019122 B2 DE 2019122B2 DE 19702019122 DE19702019122 DE 19702019122 DE 2019122 A DE2019122 A DE 2019122A DE 2019122 B2 DE2019122 B2 DE 2019122B2
Authority
DE
Germany
Prior art keywords
fixed wall
effective area
diaphragms
brake servo
hydraulic brake
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
DE19702019122
Other languages
German (de)
Other versions
DE2019122C3 (en
DE2019122A1 (en
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 filed Critical
Priority to DE19702019122 priority Critical patent/DE2019122C3/en
Priority claimed from DE19702019122 external-priority patent/DE2019122C3/en
Publication of DE2019122A1 publication Critical patent/DE2019122A1/en
Publication of DE2019122B2 publication Critical patent/DE2019122B2/en
Application granted granted Critical
Publication of DE2019122C3 publication Critical patent/DE2019122C3/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
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/563—Vacuum systems indirect, i.e. vacuum booster units with multiple booster units, e.g. tandem booster units

Landscapes

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

Abstract

The brake servo has a fixed wall (2) through the middle of the housing, separating two moving walls (3, 4) with the moving walls joined by a spacer tube (7). The tube is stepped and has its smaller diameter passing through the fixed wall. This increases the effective area of the moving walls by an amount equal to the difference in the tube diameters. The operating piston (9) is located in the wider section of tube. The servo provides an improved braking effect with a minimum of alteration. The moving walls are connected to the housing by rolling membranes (5, 6).
DE19702019122 1970-04-21 Brake boosters for automobiles Expired DE2019122C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702019122 DE2019122C3 (en) 1970-04-21 Brake boosters for automobiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702019122 DE2019122C3 (en) 1970-04-21 Brake boosters for automobiles

Publications (3)

Publication Number Publication Date
DE2019122A1 DE2019122A1 (en) 1971-11-18
DE2019122B2 true DE2019122B2 (en) 1977-04-14
DE2019122C3 DE2019122C3 (en) 1977-12-08

Family

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Also Published As

Publication number Publication date
DE2019122A1 (en) 1971-11-18

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee