| 摘要 |
PURPOSE:To prevent the damage of a starter by a method wherein the conduction of the starter is intercepted when the heating temperature of the exciting coil of a magnet switch, which is connected to a starting motor, and the temperature of the starting motor are detected in that one of them or both of them have arrived at respective predetermined values. CONSTITUTION:When the starting switch 200 is switched ON, a transistor 2 in a relay 300 is put ON, thereafter, the transistor 3 is put ON after a predetermined time delay and a movable contact 1b is closed by the exciting of a coil 1a. Then, the attracting coil 10 and the holding coil 11 of a magnet switch 400 are conducted to close the movable contact 9a and the starter motor 500 is started. In this case, a normally closed bimetal 15 is opened to stop the motor 500 if the starter is driven for a long period of time without obtaining the perfect ignition of an engine and the temperature of the motor 500 is risen abnormally. In case the motor 500 is driven in no-load condition and the temperature of a normally closed bimetal 14 has arrived at a predetermined value by the self heating thereof, the normally closed bimetal 14 is opened and the motor 500 is stopped. |
