| 摘要 |
PURPOSE:To save the operation for fastening a seat belt after a driver's getting off a car by mounting a switch which is turned off when the driver leave the car in a circuit from a power source through a fastening-side limit switch to a power motor. CONSTITUTION:When a door is opened at driver's leaving a car, a door switch 6 is turned off and the connection of a relay 5 to a coil 5c is broken, switches 5a and 5b of the relay 5 being changed over to the earth side E and the power side B respectively. And the circuit from power source 1 to a release-side limit switch 4, a relay switch 5b, a power motor 2, a relay-switch 5b, a power motor 2, a relay switch 5a and the earth is closed and the motor 2 is turned to shift a shifting end 8 of a seat belt in the direction of release. When the shifting end 8 actuates the limit switch 4 on the earth side E, the motor 3 stops. And, on the door being closed from outside by the driver, a switch 7 mounted in the motor-driving circuit is turned off and the seat belt is left released. |
