| 摘要 |
PURPOSE:To adequately engage a drive gear of a synchronous motor with the first-stage gear of a reduction gear train by supporting one end of a rotational shaft of the motor by bearings provided integrally with a timer case in the case. CONSTITUTION:A hole 1a for engaging a drive gear 6 which is journaled at a rotational shaft 4 of a synchronous motor 3 in the case 1 is opened on the upper surface of a case 1 which is formed substantially in a box shape, and a bearing 1d for supporting one end of the shaft 4 at the gear 6 side is provided in a cavity. A synchronous motor 3, in which the other end of the shaft 4 is supported via the bearing 9d of a bobbin case 9, is mounted fixedly in the state positioned in the case 1, the gear 6 of the shaft 4 is engaged with the first-stage gear 11a of a reduction gear train 11 provided in the case 1, and the contact 15a of a leaf switch 15 is opened or closed by a disc cam 12 which is fixed to the final-stage gear 11b of the gear train 11. |
