| 摘要 |
PROBLEM TO BE SOLVED: To reduce the operating sound at the completion of returning motion of a driving object by transmitting the rotary driving force of an electric motor to a rotary output member firmly fitted to the output shaft through the speed reducing gear train, and depressing the speed of the driving object in the returning motion of the motorizing driving device reciprocating the driving object connected to such rotary output member against the returning energized force. SOLUTION: A first carriage 76 engaged with the rotor pinion 80 of the electric motor 24 is integrally combined with a first pinion 78 engaged with the second carriage 96. One way clutch means 86 is interposed between the first carriage 76 and the transmission shaft 74 arranged to be relatively rotatable against the first carriage 76 on the same center axis with the first carriage 76.
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