| 摘要 |
A braking apparatus for braking a wheel of a vehicle, including: (a) a main body; (b) a cam which is supported by the main body such that the cam is rotatable about an axis thereof, and which has a cam surface whose distance from the axis changes as viewed in a circumferential direction of the cam; (c) a movable member which is held by the main body such that the movable member is movable relative to the main body, and which holds a cam follower portion engaging the cam surface, and a braking portion brought into contact with a tire of the wheel; and (d) an operating device which includes an operating member operable to be moved in first and second directions, and which rotates the cam in one of opposite directions in response to the movement of the operating member in the first direction, for thereby moving the movable member in a forward direction that causes the braking portion to be displaced toward the tire, and rotates the cam in the other of the opposite directions in response to the movement of the operating member in the second direction, for thereby moving the movable member in a reverse direction that is opposite to the forward direction.
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