GB1299374A - Improvements in or relating to frictional couplings - Google Patents

Improvements in or relating to frictional couplings

Info

Publication number
GB1299374A
GB1299374A GB3318269A GB3318269A GB1299374A GB 1299374 A GB1299374 A GB 1299374A GB 3318269 A GB3318269 A GB 3318269A GB 3318269 A GB3318269 A GB 3318269A GB 1299374 A GB1299374 A GB 1299374A
Authority
GB
United Kingdom
Prior art keywords
plunger
force
shoe
shoes
plungers
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
GB3318269A
Inventor
Benjamin Andrew Clay
Albert Charles Hill
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 GB3318269A priority Critical patent/GB1299374A/en
Priority to DE19702032359 priority patent/DE2032359C3/en
Priority to JP5696870A priority patent/JPS4925303B1/ja
Priority to US00238978A priority patent/US3805926A/en
Publication of GB1299374A publication Critical patent/GB1299374A/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
    • F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
    • 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
    • F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
    • F16D65/562—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake arranged between service brake actuator and braking member, and subjected to service brake force
    • 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
    • F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
    • F16D65/565—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake arranged diametrically opposite to service brake actuator, and subjected to service brake force
    • 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
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F16D2125/32—Cams; Levers with cams acting on one cam follower

Abstract

1299374 Internal shoe drum brakes GIRLING Ltd 22 June 1970 [1 July 1969] 33182/69 Heading F2E In a servo-type internal-shoe drum-brake the force transmitted from the trailing edge 71 of a shoe 51 to the leading edge 72 of a shoe 52 is reduced by means of unit 3 disposed between the ends 53 of the shoes 51, 52 when the force is applied in one direction but is unreduced when the force is applied in the other direction. Shoes 51, 52 respectively engage slots 41 in plungers 4 of the unit 3 which plungers contact a cam 8, pivoted by means of trunnions 21, the cam profile of which is such that when the trailing edge 71 urges the associated plunger against the cam, the latter pivots and by virtue of its profile transmits the reduced force. The shoes may be manually or automatically adjusted and are provided for this purpose with a pin 11 extending from one trunnion 21 and having attached thereto a tie 138, Fig. 3 (not shown), which pulls on a lever (14) pivotalabout a bearing (141) against the bias of a spring 15. During braking in the reverse direction of rotation, a pawl (16) on return movement of lever (14) engages and turns a ratchet wheel 17 under the bias of spring 15 to extend the length of plungers 4 through screw threads 18, one plunger being oppositely threaded to the other. The motion from one plunger to the other is transmitted through the ratchet wheel 17 to a slave wheel 20 associated with the other plunger.
GB3318269A 1969-07-01 1969-07-01 Improvements in or relating to frictional couplings Expired GB1299374A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3318269A GB1299374A (en) 1969-07-01 1969-07-01 Improvements in or relating to frictional couplings
DE19702032359 DE2032359C3 (en) 1969-07-01 1970-06-30 Supporting device for the two ends of the brake shoes facing away from the actuating device of a self-reinforcing inner shoe brake
JP5696870A JPS4925303B1 (en) 1969-07-01 1970-07-01
US00238978A US3805926A (en) 1969-07-01 1972-03-28 Frictional couplings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3318269A GB1299374A (en) 1969-07-01 1969-07-01 Improvements in or relating to frictional couplings

Publications (1)

Publication Number Publication Date
GB1299374A true GB1299374A (en) 1972-12-13

Family

ID=10349627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3318269A Expired GB1299374A (en) 1969-07-01 1969-07-01 Improvements in or relating to frictional couplings

Country Status (3)

Country Link
JP (1) JPS4925303B1 (en)
DE (1) DE2032359C3 (en)
GB (1) GB1299374A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7146714U (en) 1974-01-24 Hahn Fahrzeugbau Gmbh Overrun braking device for trailers
JPS6037188U (en) * 1983-08-20 1985-03-14 ミハル通信株式会社 circuit housing equipment

Also Published As

Publication number Publication date
DE2032359C3 (en) 1973-09-20
DE2032359A1 (en) 1971-03-18
JPS4925303B1 (en) 1974-06-28
DE2032359B2 (en) 1973-03-01

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Legal Events

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