ELECTRIC TRANSPORTATION VEHICLE WITH COLLISION STOP FUNCTION

摘要

PROBLEM TO BE SOLVED: To simplify structure of an electric transportation vehicle with collision stop function and make it possible to stop the vehicle even when a side section of the vehicle comes into contact with an obstacle by providing a pressure-displacement conversion section which receives changes of pressure from a pressure detection member when the vehicle comes into contact with the obstacle and converts it into displacement and stopping the electric transportation vehicle by an electric change-over member which is operated based on the displacement. ;SOLUTION: When a front end section of a load carrying platform of an electric transportation vehicle with collision stop function collides against or comes into contact with an obstacle, a beltlike moving body switch 7 is operated in such a manner that air or liquid in a contact section 14 flows into a contact cover 16 in which a contact switch 13 is stored through a tube 15. Since air or liquid presses a diaphragm 17 to which the contact switch 13 is connected, a contact of the contact switch 13 comes into contact to send a shut-off signal to a controller 8. When the controller 8 detects this shut-off signal, it sends a signal to a shut-off relay 10 between a motor 2 and a battery 9 which are built in, the shut-off relay 10 opens a circuit between the motor 2 and the battery 9 to shut off the supply of power, and the motor 2 stops.;COPYRIGHT: (C)1997,JPO