| 摘要 |
The invention relates to a friction brake which can be used for a shaft and a bearing part that can be rotated in relation to each other about a rotational axis (3). The friction brake comprises two brake elements: the first brake element has a first friction surface (24) and has to be mechanically connected to the bearing part, and the second brake element has a second friction surface (25) and has to be mechanically connected to the shaft. The connectible and disconnectable dynamic effect of an actuation mechanism forces the two brake elements against each other during a braking action or stop in such a manner that the two friction surfaces (24, 25) rest one on the other and contact each other in the area of a contact surface (29, 30). The contact surface (29, 30) covers only a part of every friction surface (24, 25) at any point in time during a braking action or stop. The relative position of the contact surface (29, 30) in relation to any of the two friction surfaces (24, 25) changes during a braking action.
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