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GB1434369A - Vehicle brake operating motor cylinders and to brake assemblies - Google Patents

Vehicle brake operating motor cylinders and to brake assemblies

Info

Publication number
GB1434369A
GB1434369A GB2853072A GB2853072A GB1434369A GB 1434369 A GB1434369 A GB 1434369A GB 2853072 A GB2853072 A GB 2853072A GB 2853072 A GB2853072 A GB 2853072A GB 1434369 A GB1434369 A GB 1434369A
Authority
GB
United Kingdom
Prior art keywords
sleeve
piston
stem
brake
peg
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.)
Expired
Application number
GB2853072A
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB2853072A priority Critical patent/GB1434369A/en
Priority to DE19732330949 priority patent/DE2330949C2/en
Priority to JP48069136A priority patent/JPS5847578B2/en
Publication of GB1434369A publication Critical patent/GB1434369A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
    • F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)

Abstract

1434369 Wear adjustment; spot-type disc brakes AUTOMOTIVE PRODUCTS Ltd 19 June 1973 [19 June 1972] 28530/72 Heading F2E The brake operating motor cylinder 13 of a spot type disc brake comprises a piston 14 co-operable with a thrust member of adjustable length and constituted by a stem 20 and a sleeve 25 in screw threaded interengagement: to adjust for wear during a fluid pressure brake application the stem 20 is rotatable on the sleeve 25 but should excessive pressure be applied an arrangement comprising a piston 32 and a peg 37 acts to prevent adjustment. As shown, the sleeve 25 and piston 14 have respective frusto-conical surfaces 26, 27 which form a core clutch and the sleeve 25 is urged towards the piston 14 by a spring 28. A screw thread 24 on stem 20 co-operates with a thread on sleeve 25 but there is a clearance between the threads to allow of relative axial movement without rotation-the screw thread 24 is preferably of square cross-section. The piston 32 is received in a bore through sleeve 31 and is biased by a spring 33. The piston 32 has an annular recess 35 and the peg 37 is received in recess 35 and also projects through a radial bore 36 in stem 20 to co-operate with the remainder of thread 24 on stem 20 to form a continuous thread. During normal brake actuation piston 14 will be moved rightwardly and as sleeve 25 follows this movement the clearance between the threads is first taken up and thereafter the sleeve 25 rotates on stem 20 to adjust for wear. In the event of excess pressure being supplied to motor cylinder 13 (e.g. during a panic stop) piston 32 is moved against the bias of spring 33 and coaction between a ramp surface 39 on peg 37 and recess 35 forces the peg 37 radially outwardly and locks sleeve 25 against rotation. The brake may be applied mechanically by rotation of stem 20 about its axis by means of an arm connected to a Bowden cable. The cylinder 13 is formed integrally with a slidable body 10 having a bridge member 12.
GB2853072A 1972-06-19 1972-06-19 Vehicle brake operating motor cylinders and to brake assemblies Expired GB1434369A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2853072A GB1434369A (en) 1972-06-19 1972-06-19 Vehicle brake operating motor cylinders and to brake assemblies
DE19732330949 DE2330949C2 (en) 1972-06-19 1973-06-18 Brake cylinder for disc brakes with adjusting device
JP48069136A JPS5847578B2 (en) 1972-06-19 1973-06-19 Sealing brake motor cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2853072A GB1434369A (en) 1972-06-19 1972-06-19 Vehicle brake operating motor cylinders and to brake assemblies

Publications (1)

Publication Number Publication Date
GB1434369A true GB1434369A (en) 1976-05-05

Family

ID=10277094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2853072A Expired GB1434369A (en) 1972-06-19 1972-06-19 Vehicle brake operating motor cylinders and to brake assemblies

Country Status (3)

Country Link
JP (1) JPS5847578B2 (en)
DE (1) DE2330949C2 (en)
GB (1) GB1434369A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167989A (en) * 1977-04-01 1979-09-18 Societe Anonyme D.B.A. Self adjusting device for a disc brake
WO1982000052A1 (en) * 1980-06-20 1982-01-07 Ohshima H Disk brake
US4378863A (en) 1979-08-30 1983-04-05 Lucas Industries Limited Automatic adjuster for hydraulic brake actuator
DE3819730A1 (en) * 1987-06-09 1988-12-29 Akebono Brake Ind AUTOMATIC SPLIT CONTROL DEVICE FOR A DISC BRAKE PROVIDED WITH PARKING BRAKE
US4809819A (en) * 1986-02-28 1989-03-07 Lucas Industries Public Limited Company Brake actuators

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445645C3 (en) * 1974-09-25 1982-03-04 Alfred Teves Gmbh, 6000 Frankfurt Automatic readjusting device for the actuating piston of a brake cylinder that can be acted upon by pressure medium, in particular for partially lined disc brakes of vehicles
DE2543930C3 (en) * 1975-10-02 1980-08-07 Knorr-Bremse Gmbh, 8000 Muenchen Automatic adjustment device for the actuating piston of a brake cylinder that can be acted upon by pressure medium, in particular for hydraulically actuated block or disc brakes of vehicles
JPS53123383U (en) * 1977-03-10 1978-09-30
FR2402806A1 (en) * 1977-09-09 1979-04-06 Dba BRAKE MOTOR AND DISC BRAKE HAVING SUCH A MOTOR
DE3136958A1 (en) * 1981-09-17 1983-03-31 Alfred Teves Gmbh, 6000 Frankfurt Automatic adjustment device for a hydraulically and mechanically actuable friction brake
DE137162T1 (en) * 1983-08-31 1985-09-12 Rockwell International Corp., Pittsburgh, Pa. DISC BRAKE.
FR2554194B1 (en) * 1983-10-28 1986-01-17 Dba AUTOMATICALLY ADJUSTABLE BRAKE MOTOR
FR2559563B1 (en) * 1984-02-13 1989-11-24 Kelsey Hayes Co ADJUSTING DEVICE FOR DISC BRAKE
DE8434025U1 (en) * 1984-11-20 1986-03-27 Lucas Industries P.L.C., Birmingham, West Midlands Brake actuator
FR2576650B1 (en) * 1985-01-25 1987-03-20 Bendix France AUTOMATICALLY ADJUSTABLE BRAKE MOTOR
DE3841593A1 (en) * 1988-04-28 1990-06-13 Perrot Bremse Gmbh Deutsche MECHANICALLY ACTUATED SLIDING CALIPER DISC BRAKE
US4867283A (en) * 1988-06-22 1989-09-19 General Signal Corporation Ramp/roller slack adjuster
DE4038032A1 (en) * 1990-11-29 1992-06-04 Teves Gmbh Alfred Automatic adjustment for disc brake - has brake piston, with two adjustment sections, auxiliary piston and friction coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1169577A (en) * 1966-12-20 1969-11-05 Girling Ltd Improvements in Self-Adjusting Mechanisms
GB1284273A (en) * 1969-06-18 1972-08-02 Girling Ltd Improvements relating to automatic adjusters for vehicle brakes
US3610373A (en) * 1969-10-03 1971-10-05 Bendix Corp Adjuster mechanism for disc brakes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167989A (en) * 1977-04-01 1979-09-18 Societe Anonyme D.B.A. Self adjusting device for a disc brake
US4378863A (en) 1979-08-30 1983-04-05 Lucas Industries Limited Automatic adjuster for hydraulic brake actuator
WO1982000052A1 (en) * 1980-06-20 1982-01-07 Ohshima H Disk brake
US4809819A (en) * 1986-02-28 1989-03-07 Lucas Industries Public Limited Company Brake actuators
DE3819730A1 (en) * 1987-06-09 1988-12-29 Akebono Brake Ind AUTOMATIC SPLIT CONTROL DEVICE FOR A DISC BRAKE PROVIDED WITH PARKING BRAKE
US4917220A (en) * 1987-06-09 1990-04-17 Akebono Brake Industry Co., Ltd. Automatic gap control apparatus for a disc brake with a parking brake

Also Published As

Publication number Publication date
JPS4962868A (en) 1974-06-18
DE2330949A1 (en) 1974-01-10
DE2330949C2 (en) 1982-10-14
JPS5847578B2 (en) 1983-10-24

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Legal Events

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