| 摘要 |
PURPOSE:To facilitate exchanging of drum body by forming the drum which is provided with a flange having a pipelike stay part extending along the axial center part of the drum body and a flange having a fitting hole fitting to the end of this stay part. CONSTITUTION:The 1st and 2nd flanges 2, 3 are held fitted to both end parts of a cylindrical drum body 1. The 1st flange 2 has a bearing part 5 through which a drum shaft 4 can pass in the central part, and is connected with a piplike stay part 6 extending along the axial center part of the drum body 1. The 2nd flange 3 is formed to a disc shape having a fitting hole 7 fitting to the leading end part of the pipelike stay part 6 of the 1st flange 2 in central part. Further, internal screws are engraved on the inside circumferential surface in the leading end part of the pipelike stary part 6, and a flange fixing knob 10 having a bearing part through which a drum shaft 4 can pass is screwed to the end screw part 8, and these provide the constitution of fastening the 1st and 2nd flanges 2, 3. |
