| 摘要 |
A casing includes a support tubular part. An input shaft is rotatably supported in the casing. A motor is housed in the casing and rotationally drives the input shaft. An output shaft includes an output tubular part, which is formed in a tubular shape to rotatably couple an end part of a driven shaft in its inside and rotatably supported inside the support tubular part of the casing. The output shaft outputs the rotary force of the motor to the driven shaft with the transfer to the rotation of the input shaft. A bearing member is provided to be supported inside the support tubular part of the casing and rotatably bear the driven shaft in a state that the manual shaft is coupled to the output tubular part of the output shaft.
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