| 摘要 |
PURPOSE:To deform elastically a connecting pipe and reduce the frictional resistance to prevent breaks of the inside wall of the pipe by forming the connecting pipe with a resin having a relatively high lubricity such as a polypropyrene or the like and making both ends or one end thinner than the other parts. CONSTITUTION:With respect to dimensions, the inside diameter of a connecting pipe 11, the thickness of the pipe 11, and the outside diameter of a part A are set to 12mm., 1mm., and 14mm. respectively when the outside diameter of a carrying screw 4 is 10mm.. Both end parts of the pipe 11, namely, parts B to be fitted to a cleaner vessel 5 and a drum revolving shaft 7 are set to about 0.5mm. thickness. Even if an ordinary carrying screw is used, the sliding resistance is very low, and the pipe 11 is superior in strength, and the inside wall of the connecting pipe 11 is not broken by the carrying screw 4. Since the thickness of both end parts is reduced, the pipe 11 can be deformed elastically in a certain degree though it consists of the resin, and the frictional resistance is low, and assembling is easy. |
