GB1269027A - Improvements in or relating to drum brakes - Google Patents

Improvements in or relating to drum brakes

Info

Publication number
GB1269027A
GB1269027A GB3217070A GB3217070A GB1269027A GB 1269027 A GB1269027 A GB 1269027A GB 3217070 A GB3217070 A GB 3217070A GB 3217070 A GB3217070 A GB 3217070A GB 1269027 A GB1269027 A GB 1269027A
Authority
GB
United Kingdom
Prior art keywords
piston
ring
brakes
shoe
drum
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
GB3217070A
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.)
DBA SA
Original Assignee
DBA SA
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 DBA SA filed Critical DBA SA
Publication of GB1269027A publication Critical patent/GB1269027A/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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/26—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots
    • F16D51/30—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots fluid actuated
    • 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
    • F16D65/54—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
    • F16D65/546—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment for mounting within the confines of a drum brake

Landscapes

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

Abstract

1,269,027. Internal shoe drum brakes. SOC. ANON D.B.A. 2 July, 1970 [18 July, 1969], No. 32170/70. Heading F2E. An internal shoe drum brake has wheel cylinders 16 urging one end of shoes 26, 28 towards a drum 8, the other end of the shoes being pivotably mounted on a fixed support 10 by means of pins 34 which pass through slots 22 in the cylinder casing and through arms 14 of support 10. Fluid actuated pistons 18 within cylinders 16 have extensions 20 through slots of which pass pivot pins 36 pivotably connecting 30, 32 of each shoe to the respective cylinder 16 at the one shoe end. An automatic slack adjuster is provided comprising a return spring 48 located between a friction ring 46 engaging a central rod 38 threaded into cylinder 16 and contacting the end of a blind bore 50 in piston 18, and a washer 42 retained by a flange 40. When the brakes are applied piston 18 is advanced under fluid pressure and spring 48 is compressed between washer 42 and ring 46. On releasing brake pressure piston 18 is retracted until a shoulder 52 thereof engages ring 46. When the linings are worn piston 8 advances sufficiently to allow the coils spring 48 to contact one another and the ring 46 slides along the rod 38, and again contacts shoulder 52 when the brakes are released resulting in automatic take-up of slack.
GB3217070A 1969-07-18 1970-07-02 Improvements in or relating to drum brakes Expired GB1269027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6924486A FR2052120A5 (en) 1969-07-18 1969-07-18

Publications (1)

Publication Number Publication Date
GB1269027A true GB1269027A (en) 1972-03-29

Family

ID=9037644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3217070A Expired GB1269027A (en) 1969-07-18 1970-07-02 Improvements in or relating to drum brakes

Country Status (5)

Country Link
AU (1) AU1751570A (en)
DE (1) DE2035408A1 (en)
ES (1) ES381811A1 (en)
FR (1) FR2052120A5 (en)
GB (1) GB1269027A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183309A (en) * 1985-11-21 1987-06-03 Lucas Ind Plc Improvements in self-energising disc brakes
FR2775743A1 (en) * 1998-03-04 1999-09-10 Bosch Syst Freinage Brake drum with automatic play take up compensator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267694A1 (en) * 1986-11-05 1988-05-18 LUCAS INDUSTRIES public limited company Improvements in hydraulically-operated actuator assemblies for vehicle brakes
CN106763305A (en) * 2017-03-15 2017-05-31 福建安翔汽车配件有限公司 A kind of drum brakes system
CN114791022B (en) * 2022-04-29 2023-06-30 西安航空制动科技有限公司 Braking device for electromagnetic ejection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183309A (en) * 1985-11-21 1987-06-03 Lucas Ind Plc Improvements in self-energising disc brakes
FR2775743A1 (en) * 1998-03-04 1999-09-10 Bosch Syst Freinage Brake drum with automatic play take up compensator

Also Published As

Publication number Publication date
ES381811A1 (en) 1973-04-01
DE2035408A1 (en) 1971-02-04
AU1751570A (en) 1972-01-20
FR2052120A5 (en) 1971-04-09

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