| 摘要 |
PURPOSE:To put a driving device compactly in the inside of a sliding door which is less in thickness, and to make the sliding door slide safely and smoothly by a method wherein driving wheels are driven by operation of an oil- hydraulic motor that is actuated by an air motor. CONSTITUTION:As an air valve 16 is opened, compressed air stored in an air tank 10 is sent to an air cylinder 5, and a driving wheel 3 is pushed down, resisting the drawing force of a coil spring, and is brought into contact with a rail 13 and thereby the wheel becomes capable of travelling. At the same time, an air motor 9 is actuated by the compressed air, making an oil-hydraulic pump 7 start, and thereby pressure oil is sent from an oil tank 8 to an oil- hydraulic motor 4. Then, the oil-hydraulic motor 4works and transmits power to the driving wheel 3, making a sliding door 1 slide over the rail 13. Direction of sliding of the sliding door 1 can be changed optionally either to forward motion or rearward motion by operation of a selector lever 18. |
