| 摘要 |
<p>A pedal mechanism (20) comprising a friction member comprising a column received at one end within the pedal arm (18), a friction element mounted on the other end of the column in frictional contact with a friction surface (36) on the base (23) and means (30, 32) for biasing the friction element (28a) in a direction towards the friction surface, the position of the friction element and column relative to the pivot axis (26) being such that as the pedal arm rotates about the pivot axis, the column is urged either away from the pedal arm by pressure between the friction element and the surface of the base or toward the pedal arm by the biasing means, to provide a resistance to rotational movement of the pedal in one rotational direction, and a restoring force assisting rotational movement of the pedal in the other rotational direction.</p> |
