| 摘要 |
The invention relates to a sealing device for cylinder bearings. An annular projection which is connected to the cylinder neck (2) in a rotationally fixed manner carries an annular sealing surface which interacts with an elastic, stationary sealing element (23, 24), a sealing labyrinth consisting of stationary parts and parts which are connected to the cylinder (1) being placed upstream from the sealing element (13) towards the cylinder barrel. The aim of the invention is to develop one such sealing device in such a way that good sealing action can be achieved using simple and cost-effective sealing elements, and the durability of the seal increased in relation to that created by known sealing devices in such a way that the entire sealing device is cheaper. To this end, the labyrinth consists of a ring (7) having an essentially C-shaped cross-section and being linked to the front side of the cylinder in a sealed manner, a stationary, annular closing cover (9) plunging into the C-shaped opening of said ring; a drainage groove (30) which is open towards the outside is provided on the outside of the annular closing cover; the labyrinth opening (14) is situated at a distance from the bottom of the drainage groove; and the annular closing cover comprises an extension (10), the outer side of said extension creating a-deviation in the path of the labyrinth, and the inner side of said extension comprising a holding element for the stationary sealing element.
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