| 摘要 |
PURPOSE: A sliding door having a multi-path switching unit for a bus is provided to improve working process, and to cut down expenses by reducing the occupied space with forming the air passage selectively in opening and closing the door by a single valve or an emergency. CONSTITUTION: A multi-path switching apparatus of a sliding door for a vehicle is composed of an air tank supplying pneumatic pressure of compressed air; a cylinder having a piston opening and closing the door with reciprocating by flowing air through a pipe for transmitting pneumatic pressure of compressed air selectively; and a multi-magnetic valve(10) forming the pneumatic pressure passage in the pipe between the air tank and the cylinder. The multi-magnetic valve consists of a cylindrical hollow housing(11) forming air inlet and outlet, a coil(12) conducting power of a battery according to the passage of the housing, and a moving body(14) turning manually in an emergency. Working process is simplified, and expenses are reduced with forming the air passage by using the multi-magnetic valve.
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