Importance

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Abstract

A pad retention device for a brake calliper for a disc brake for a vehicle comprises four spaced elongate cylindrical abutment pins (11) to (14) dispersed at spaced intervals around the periphery of the pad (10). The pins comprise two leading edge pins (11) and (12) and two trailing edge pins (13) and (14). Pin (13) is disposed adjacent the upper leading edge and a further pin (15) provides a centre locating and retaining pin which extends through an aperture (16) in the back plate of the pad. A cantilever spring (17) is mounted on pin (15) and pin (13). In use the spring (17) bears down on the pad (10), using pin (13) as a reaction point and centre locating and retaining pin (15) as a pivot, on the trailing edge side of the pin (15). This in turn tends to rotate the pad in an anticlockwise direction reducing or eliminating pad to abutment pin air gaps and therefore pad rattle and pad knock. This arrangement also provides improved squeal noise resistance.

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First Claim