| 摘要 |
In a shaft coupling with fluid displacement damping, in which a fluid is passed out of a chamber (18) in which pressure is building up into a chamber (19) at lower pressure, it is not sufficient to prevent pressure losses by seals (31, 32) only to the outside but it is also necessary to ensure that no leakage openings arise between adjacent chambers (18, 19). The differential pressure required for damping may be to a large extent cancelled out by unwanted leakage openings between adjacent chambers (18, 19). The fluid is forced out of chamber (18) into chamber (19) via restriction openings (33, 34) formed by the ends (21, 22) of the pressure chambers and the end faces (23, 24) of the spring elements (15). In order to permit a larger radial displacement of the hub part (10), it would be necessary to leave a free space, corresponding to the desired radial play, between the ends (21, 22) of the pressure chambers and the hub part (10). However, this free space gives rise to the unwanted leakage openings at the points under the highest pressure. In order to prevent this, the ends (21, 22) of the pressure chambers must be made locally flexible, while the total restriction openings (33, 34) should be kept the same size. For this reason, the ends (21, 22) of the pressure chambers should be formed right through to the hub part (10) by the housing (12), the connecting flange (11), the flexible ring elements (25, 26) and the receiving grooves (29, 30). <IMAGE>
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