| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized opening/closing machine having a built-in drive motor at one end of a winding drum, having a driving point on the output shaft of a drive motor inserted therein, secured to a wall surface by a mounting bracket exposed to the outside through the output shaft, and reduced in the bending moment of the mounting bracket by reducing the overall length thereof since the winding drum is increased in rigidity and size since it is supported by the mounting bracket through the overall length and increased in bending moment. SOLUTION: This sheet opening/closing machine comprises the output shaft 6 attached to a rotating flange 5 on the inner peripheral surface of the winding drum 3, a speed reduction part 7 for rotating the output shaft 6, the mounting bracket 12 attached to a wall surface K while being fitted to a motor frame 9, and a drum sliding surface 13 for supporting the inner peripheral surface of the winding drum 3 on the outer peripheral surface of the mounting bracket 12. For a bearing, the motor frame 9 is fitted to the spigot joint 22 of a speed reducer 7 and the spigot joint 22 of the mounting bracket 12 in the axial direction for connection. COPYRIGHT: (C)2009,JPO&INPIT
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