GB1412151A - Extensible strut adjuster with overload prevention device - Google Patents

Extensible strut adjuster with overload prevention device

Info

Publication number
GB1412151A
GB1412151A GB5173372A GB5173372A GB1412151A GB 1412151 A GB1412151 A GB 1412151A GB 5173372 A GB5173372 A GB 5173372A GB 5173372 A GB5173372 A GB 5173372A GB 1412151 A GB1412151 A GB 1412151A
Authority
GB
United Kingdom
Prior art keywords
screwthread
reversible
adjuster
control means
connection
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
GB5173372A
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.)
GILLING Ltd
Original Assignee
GILLING 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 GILLING Ltd filed Critical GILLING Ltd
Priority to GB5173372A priority Critical patent/GB1412151A/en
Publication of GB1412151A publication Critical patent/GB1412151A/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
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum 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
    • F16D65/561—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
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges

Abstract

1412151 Slack adjusters GIRLING Ltd 5 Nov 1973 [9 Nov 1972] 51733/72 Headings F2E and F2K An automatic slack adjuster, particularly for vehicle brakes comprises first and second members 1, 14 having a non-reversible screwthread connection 4 therebetween and having respective thrust surfaces 2, 45, control means for turning the second member 14 relative to the first responsively to a requirement for adjustment, the second member 14 being in two parts 14a, 14b the first, 14a, of which has the non- reversible screwthread connection 4 and thrust surface 45 and the second 14b, of which is acted on by the control means, the two parts being so connected that the second part 14b rotates the first 14a when the control means is operative and the second part 14b turns relative to the first when an axial force is applied in one direction to the first part 14a. The adjuster shown is in a drum brake actuated by a wedge member 35 which acts on actuator members 11, 42 to spread them apart. During normal braking there is sufficient axial clearance at the reversible screwthread connection 23a, 23b between a control member 24 of the control means and the part 14a of the second member for the normal axial travel of member 14 not to take up fully this clearance. If lining wear takes place this clearance is taken up and member 14 acts on control member 24 tending to separate friction surfaces 25a, 25b respectively provided on the member 24 and the internal bore of the adjuster housing 25. The load of a spring 26 acting between the control member 24 and a retaining cup 27 is thereby partially relieved so that the reversible screwthread connection 23a, 23b turns member 24. On brake release screwthread 23a moves to the opposite flank of screwthread 23b before full release is attained. The screwthread connection 4 is thereby relieved of axial load and friction surfaces 25a, 25b are biased together by spring 26 thereby preventing rotation of control member 24. The second member 14 is thereby unscrewed from a strut 1, engaging one brake shoe lining to increase the length of the adjuster. It is stated that providing the second member 14 in two parts 14a, 14b relieves the reversible screwthread connection of shock loads.
GB5173372A 1972-11-09 1972-11-09 Extensible strut adjuster with overload prevention device Expired GB1412151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5173372A GB1412151A (en) 1972-11-09 1972-11-09 Extensible strut adjuster with overload prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5173372A GB1412151A (en) 1972-11-09 1972-11-09 Extensible strut adjuster with overload prevention device

Publications (1)

Publication Number Publication Date
GB1412151A true GB1412151A (en) 1975-10-29

Family

ID=10461162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5173372A Expired GB1412151A (en) 1972-11-09 1972-11-09 Extensible strut adjuster with overload prevention device

Country Status (1)

Country Link
GB (1) GB1412151A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049085A1 (en) * 1980-09-27 1982-04-07 Automotive Products Public Limited Company Hydraulic wheel cylinder assemblies and drum brakes incorporating same
EP0181004A1 (en) * 1984-11-08 1986-05-14 LUCAS INDUSTRIES public limited company Brake adjuster for brakes, in particular for vehicle drum brakes
EP0202789A2 (en) * 1985-05-23 1986-11-26 General Motors Corporation Control mechanism for engine throttle position
EP0210788A1 (en) * 1985-07-23 1987-02-04 LUCAS INDUSTRIES public limited company Automatic adjuster
CN114458756A (en) * 2020-11-10 2022-05-10 操纵技术Ip控股公司 Power steering assembly with spring retainer for compensating mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049085A1 (en) * 1980-09-27 1982-04-07 Automotive Products Public Limited Company Hydraulic wheel cylinder assemblies and drum brakes incorporating same
EP0181004A1 (en) * 1984-11-08 1986-05-14 LUCAS INDUSTRIES public limited company Brake adjuster for brakes, in particular for vehicle drum brakes
EP0202789A2 (en) * 1985-05-23 1986-11-26 General Motors Corporation Control mechanism for engine throttle position
EP0202789A3 (en) * 1985-05-23 1987-12-16 General Motors Corporation Control mechanism for engine throttle position
EP0210788A1 (en) * 1985-07-23 1987-02-04 LUCAS INDUSTRIES public limited company Automatic adjuster
CN114458756A (en) * 2020-11-10 2022-05-10 操纵技术Ip控股公司 Power steering assembly with spring retainer for compensating mechanism

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Legal Events

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