Verfahren zur automatischen Steuerung des Öffnens und Schließens des Fensters der Fahrerkabine eines Arbeitsfahrzeugs sowie eine Vorrichtung zur praktischen Anwendung des Verfahrens

摘要

PCT No. PCT/JP94/00534 Sec. 371 Date Sep. 29, 1995 Sec. 102(e) Date Sep. 29, 1995 PCT Filed Mar. 31, 1994 PCT Pub. No. WO94/23138 PCT Pub. Date Oct. 13, 1994A method of automatically controlling the opening and closing of the window of the driver's cab of a working vehicle, and an apparatus for practicing the same method, are capable of carrying out the opening and closing of such a window smoothly and the shutting of such a window reliably, and have a high operability and a high safety. To obtain such effects, the apparatus is provided with a window (14) movable along guide rails (20L, 20R, 22L, 22R) extending between a window frame (16) and a top wall (18), a driving cable (28) for moving the window (14) vertically by operating a driving means (34), locking units (29L, 29R) adapted to press the window (14) against the window frame (16) of the driver's cab (12) and shut the same, and a controller (50) for controlling these operations. In this apparatus, the locking units (29L, 29R) are provided with means (47L, 47R) for detecting a terminal position for a downward movement of the window (14) during a window closing operation, a circuit (56) for detecting a locking motor driving current during a window shutting operation, and means (48L, 48R) for detecting limit positions for backward movements of locking members (44L, 44R) during a window shutting force releasing operation; and the controller (50) is provided with a delay circuit (59), an element (54) for eliminating slack in the driving cable, an element (53) for shutting up the window (14), and a window shutting force releasing element (52).