| 摘要 |
<p>A bicycle hydraulic brake actuation device (30) includes a hydraulic master cylinder housing (34) having a bore, a master piston (36) and a radial seal (86,88) received in the bore a push rod (44) and a lever (48). The push rod (44) is configured to move the master piston (36) and the radial seal (86,88) between a neutral position and a braking position. The lever (48) is pivotally attached to the housing for pivotal movement between an at rest position and a brake actuation position. The lever (48) includes a contact surface (130) configured and arranged to move the push rod (44) as the lever (48) is pivoted between the at rest position and the brake actuation position. Further, the push rod (44) includes at least one roller (104) configured to contact to the contact surface (130) of the lever (48).</p> |
