Relating to disc brakes
AssigneeMeritor Automotive GmbH
InventorsCarl Edward Heinlein, Philip Leonard Trott, Jonathan Leslie Christopher Jackson
Life of this patent
Estimating the term…
Abstract
A disc brake includes a housing which straddles a braking disc and is slidably mounted in a torque taking member. The housing includes a brake actuator mechanism having at least one adjustable tappet assembly. The tappet assembly extends through a bearing aperture and a cover plate and is sealed thereto by a seal assembly. The bearing aperture is defined by the inside wall of a bearing projection formed with the cover plate. A lever and eccentric arrangement operates the tappet assembly via a force transmission member located in a groove in the eccentric. An intermediate member also located in the groove carries a gear drive which operates an adjuster mechanism for the brake.
Claims33
A disc brake assembly comprising:
- a brake housing straddling a braking disc and slidably mounted on a torque taking member, said torque taking member carrying a first and a second friction pad located adjacent opposite faces of said braking disc;
- an adjustable tappet assembly engageable with said first friction pad assembly, said tappet assembly located within a recess in said brake housing, said recess open towards said braking disc;
- a cover plate covering said recess in said brake housing, said cover plate having an bearing aperture with a cylindrical extension such that said tappet is extendable through said bearing aperture.
A disc brake assembly comprising:
- a brake housing straddling a braking disc and slidably mounted on a torque taking member, said torque taking member carrying a first and a second friction pad located adjacent opposite faces of said braking disc;
- an actuator mechanism located within a recess in said brake housing, said actuator mechanism operable by a lever and eccentric arrangement;
- and
- a bearing seat member located in a second recesses in said recess of said brake housing, said bearing seat member including a cylindrical bearing surface engageable with said lever and eccentric arrangement.
A disc brake assembly comprising:
- a brake housing straddling a braking disc and slidably mounted on a torque taking member, said torque taking member carrying a directly and indirectly actuatable friction pad located adjacent opposite faces of said braking disc;
- said brake housing slidable towards and away from said braking disc by an actuator mechanism housed in said brake housing on a first side of said braking disc, said actuator mechanism including a pair of tappets engageable against said directly actuatable friction pad assembly;
- said tappets axially slidable towards said braking disc by a lever and eccentric arrangement, one end of said lever having two lateral extensions, each extension forming a cylindrical bearing surface supported on a bearing seat within said brake housing,
- said lever having a groove extending transversely between lateral projections, said groove being eccentric relative to said cylindrical bearing surface;
- a first and a second force transmitting member located within said groove, each force transmitting member located adjacent an end region of said groove and engagable with one of said tappets;
- an intermediate member located in said groove between said first and said second force transmitting member to position said force transmitting members with respect to said tappets;
- and
- a gear drive carried by said intermediate member, said gear drive engagable with an adjuster mechanism to adjust a length of said tappets.
A disc brake assembly comprising:
- a torque taking member straddling a braking disc;
- a brake housing slidably mounted on said torque taking member for movement parallel to an axis of said braking disc;
- a brake actuator mechanism located on one side of said braking disc;
- at least one tappet assembly which is axially slidable within a bearing aperture of said brake actuator mechanism;
- a directly actuated friction pad assembly carried by the torque taking member on one side of the braking disc
- an indirectly actuatable friction pad assembly carried by the torque taking member on an opposite side of said braking disc;
- a seal assembly secured between said brake housing and a head region of said tappet, said seal assembly comprising a flexible annular boot member, one end of said boot member secured in a groove in said head region of said tappet, and an opposite end of said boot member located between a surface of said brake housing adjacent said bearing aperture;
- a cylindrical retaining section engaged within an enlarged diameter end region of said bearing aperture;
- and
- an annular lip seal secured to said cylindrical retaining section and projecting inwardly of said bearing aperture, said annular lip seal engagable with a shaft of said tappet.
Dependencies are inferred from the claim text.