| 摘要 |
<p>The present invention relates to a cycle brake for mounting on a cycle wheel hub, said brake comprising a brake drum 1 securable to a said hub for rotation together therewith and having a braking surface, a brake pad 2 having a friction surface 21 opposite said braking surface of said brake drum 1, a support means 4, 9 for holding said brake pad 2 in closely spaced proximity to said braking surface and permitting relative rotation therebetween, and a control means (W.5) for bringing said friction surface 21 of said brake pad 2 into contact with said braking surface. Known such devices produce a limited braking force. According to the present invention to one side of said brake pad 2 there is provided an opposed member 6 movable relative to said brake pad 2, and between said opposed member 6 and said brake pad 2 there is provided an actuator mechanism 7, 8, 31, 32, 51 which presses said friction surface 21 of said brake pad 2 against said braking surface of said brake drum 1 when said brake pad 2 moves circumferentially of said brake drum 1.</p> |
