| 摘要 |
PURPOSE:A cylinder which is to house a motor is pressure-inserted into a tapered, nearly circular barring hole, and a conduit is fitted on the flat part of the bottom of the cylinder. By this, it is possible to increase processing and sealing efficiency. CONSTITUTION:Cylinder 34 fitted with depression P for fitting motor 32 and having a flat bottom is pressure inserted into barring hole 22b, which is provided on back plate 22a of outer box 22 and which is nearly circular and tapered in such manner that the inner diameter D2 of its end part is made smaller than the outer diameter D0 of cylinder 34, and it is brought into close contact with opening flange 34a and back plate 22a. Conduit 35 is fitted to the flat part of the bottom of cylinder 34 in such a way that its one side is brought into close contact with cylinder 34 and its other side is brought into close contact with the side of the inner box. At the same time, motor 32 is connected to fan 31 via motor shaft 33. By this, it is possible to eliminate sealing material and fastening screws and reduce the size of the cylinder. Thus, processing and sealing efficiency is increased. |
