| 摘要 |
PCT No. PCT/DE95/00532 Sec. 371 Date Oct. 15, 1997 Sec. 102(e) Date Oct. 15, 1997 PCT Filed Apr. 18, 1995 PCT Pub. No. WO95/28237 PCT Pub. Date Oct. 26, 1995A cleaning device with adjustable brush bars that are mounted in a cylindrical inner tube and that may be adjusted inwards or outwards in the radial direction by means of an outer tubular piece. A driving unit for such a cleaning device has an open bore in both axial directions and may be flanged on the cleaning accessory. As the cleaning device is axially open in both directions and the cleaning accessory is also axially open in both directions, elongated threads or bolts may be cleaned easily and without effort. The non-cleaned bolt section lies in front of the cleaning accessory and enters therein, the cleaned bolt section projects out of the axially open end of the driving unit. This not only makes it possible to clean elongated bolts and threads in a reliable manner, it also allows forces to be transmitted in a highly effective manner to the brush cleaning accessory, independently from the length of the thread to be cleaned. The force may be increased by stepping down the rotary driving member. A restoring spring device allows the brush bars to be independently pressed in the radial direction against the setting cam and the brushes to be held in the set position.
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