| 摘要 |
A disc brake pad backplate assembly (133) including a backplate (134) and pad spring (124), the backplate and/or pad spring comprising retaining means (150) to mount the pad spring to the backplate and circumferentially spaced abutments (140) arranged so as to be capable of restraining lateral movement of end portions (142) of the pad spring, the pad spring being dimensioned relative to the spacing of the abutments such that a radially inward loading applied at a central portion (148) of the spring causes the spring to function in a first resilient leaf spring-like mode in which the pad spring end portions are unrestrained up to a predetermined load limit, and such that above the predetermined load limit, the end portions are restrained by the abutments such that the pad spring functions in a second buckling mode, the spring rate being relatively low in the first mode and relatively high in the second mode. <IMAGE> |
