| 摘要 |
<p>The braking role (1) has a bracket (2) formed in U-shape, a castor (5) and a braking unit (6) containing a braking spring that is released and served over an actuator (7). The units of the braking unit or the actuator are made of a multi-component material formed in a single piece. The actuator is formed as tread element, which is allotted over a hard core (9) and softer sections.</p> |
