| 摘要 |
<p>The rotor comprises a rotor body with a helical gear formation thereon, an end portion of the rotor having an axial blind bore in the end portion. A flexible drive shaft, has a head portion of the drive shaft closely engageable in the axial blind bore, having two aligned parts of a first transverse through passage in the end portion of the rotor intersecting the blind bore. A second transverse through passage in the head portion of the drive shaft, has first and second passages being aligned with one another and being of the same diameter, and a pin engaged in the first and second passages. A retaining sleeve surroundings the end portion. At least one sealing ring mounted on the end portion and the sleeve effective to provide a seal portion and the sleeve effective to provide a seal between the retaining sleeve and the end portion of the rotor and a motor for holding the sleeve on the end portion.</p> |
