| 摘要 |
<p>In a clearance adjustment device for a brake cylinder including a push rod for operating a vehicle braking device, and a guide member which is attached to the push rod and movable together with the push rod, a frictional force (connection force) between the push rod and the guide member is stably obtained. An uneven surface 12 is provided in an outer surface of a push rod 8, and the uneven surface 12 has recesses and projections alternately arranged in a moving direction of the rod 8. An O-ring housing space 27 for opening the uneven surface 12 side is formed in the guide member 22, and O-rings 28 are arranged in the space 27. The O-rings 28 are compressed in an axis direction to be engaged with the uneven surface 12, and thus the guide member 22 and the push rod 8 are connected to each other. When a stroke of the push rod 8 is increased by wearing down of a brake and the guide member 22 comes into contact with a projection 17, the O-rings 28 are deformed by a returning force applied to the guide member 22 so as to get over projections of the uneven surface 12, the push rod 8 is displaced in relation to the guide member 22, and thus a clearance is adjusted.</p> |
