GB1226756A - - Google Patents

Info

Publication number
GB1226756A
GB1226756A GB1226756DA GB1226756A GB 1226756 A GB1226756 A GB 1226756A GB 1226756D A GB1226756D A GB 1226756DA GB 1226756 A GB1226756 A GB 1226756A
Authority
GB
United Kingdom
Prior art keywords
nut
rod
push
ring
screw
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
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
Publication of GB1226756A publication Critical patent/GB1226756A/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
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • 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
    • F16D2123/00—Multiple operation forces
    • 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
    • F16D2125/26—Cranks
    • 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
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/60—Cables or chains, e.g. Bowden cables
    • 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
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/64—Levers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

1,226,756. Seals; disc brakes; screw-and-nut mechanisms. GIRLING Ltd. 31 May, 1968 [23 June, 1967], No. 28988/67. Headings F2B, F2E and F2Q. An hydraulic actuator for a vehicle brake comprises two opposed relatively axially displaceable actuator components (e.g. pistons 10, 11) defining a space therebetween for brake fluid, and an automatic adjuster for limiting the axial movement of the actuator components towards one another, the adjuster consisting of a push-rod 17, a nut 18 having a screw-threaded connection with the push-rod and means responsive to excess relative travel between the actuator components for turning the nut in a direction to compensate for such excess relative travel, one of the actuator components being non-rotatable and having therethrough an opening of non-circular cross-section which is arranged to guide the push-rod in its axial movement and be sealed thereto by means of a resilient sealing member 36. The operation of the automatic adjuster is described more fully in Specification 1,190,841. As shown, disc brake pads 14, 16 are operated by opposed hydraulic pistons 10, 11, the latter being connected to the pad 16 by means of a yoke 15. The push-rod in cross-section may be oblong, square, rectangular, oval or elliptical in order to prevent rotation of the piston 11. The resilient sealing member 36 may be a continuous ring of uniform crosssection fitted within a non-circular recess 37, Fig. 2, in either the push-rod or piston; alternatively, the sealing member may be formed of non-uniform cross-section to seat within a circular recess 37a, Fig. 3. For handbrake operation, a cam 23 is moved anti-clockwise to operate the push-rod and force the pistons apart. The automatic adjustment of the push-rod and the piston 10 is effected by the nut 18 which is made rotatable in one direction only on the screw-threaded portion of the rod by means of a clutch arrangement consisting of a torsion spring 31 and friction rings 20, 21. The ring 20 includes a metal washer 24 and is turned relative to the nut 18 by means of balls 28 arranged in cam recesses between ring and nut. The other ring 21 of the clutch is made of P.T.F.E. When the nut 18 moves axially to the right upon applying the brakes, the ring 20 is held by friction at the clutch and the nut 18 is rotated by cam action; when the hydraulic pressure is reduced, the friction at the screw-thread become greater than that at the clutch so that the nut is not turned back by the rotation of the ring 20. Specifications 1,190,841, 1,179,235 and 1,169,577 are referred to.
GB1226756D 1967-06-23 1967-06-23 Expired GB1226756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2898867 1967-06-23

Publications (1)

Publication Number Publication Date
GB1226756A true GB1226756A (en) 1971-03-31

Family

ID=10284458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1226756D Expired GB1226756A (en) 1967-06-23 1967-06-23

Country Status (4)

Country Link
JP (1) JPS4935660B1 (en)
DE (1) DE1750987A1 (en)
FR (1) FR1570935A (en)
GB (1) GB1226756A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133488A (en) * 1982-11-15 1984-07-25 Tokico Ltd Pad clearance automatic adjusting device in disc brake

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726367A (en) 1970-07-21 1973-04-10 Kelsey Hayes Co Combined service and parking brake
DE2166688C2 (en) * 1970-07-21 1983-12-01 Kelsey-Hayes Co., 48174 Romulus, Mich. Pressure medium-controlled actuating device for a partially lined disc brake
DE2652462C2 (en) * 1975-11-21 1985-06-27 Automotive Products Ltd., Leamington Spa, Warwickshire Release bearings for vehicle clutches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133488A (en) * 1982-11-15 1984-07-25 Tokico Ltd Pad clearance automatic adjusting device in disc brake

Also Published As

Publication number Publication date
FR1570935A (en) 1969-06-13
JPS4935660B1 (en) 1974-09-25
DE1750987A1 (en) 1971-05-19

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Legal Events

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