Importance

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Abstract

A method and apparatus is provided for controlling the automatic opening and closing of a window of the driver's cab of a working vehicle in which the automatic opening and closing operations and locking operation of the window are carried out smoothly by detecting the opening and closing stop positions of the window and the operation stop positions of the locking units without fail and with high safety. In the method and the apparatus for controlling the opening and closing of the window in which the window (14) can be moved vertically between the window frame (16) and the top wall (18) by the driving means (34) for the driving cable (28) and pressed against the window frame (16) by the locking units (29L, 29R) during a window closing operation to shut the window, the terminal position for the downward movement of the window (14) during its closing operation and the terminal position for the upward movement of the window (14) during its opening operation are detected as a load current of the driving means (34) for the driving cable (28) exceeding a predetermined threshold value, whereupon the driving means (34) for the driving cable (28) is stopped. The locking stop positions and locking release positions of the locking units (29L, 29R) are also detected as the load currents of the lock motors (44L, 44R) exceeding a predetermined threshold value, whereupon the lock motors (44L, 44R) are stopped.

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First Claim