| 摘要 |
PURPOSE:To smoothly carry out the automatic opening/closing and locking operation and improve the safety in operation, by detecting the opening/closing stop position of a window and the operation stop position of a locking mechanism, in the automatic opening/closing operation of the window. CONSTITUTION:The window 14 of the operating room of a working vehicle is made raising/lowering-drive-enable by a driving cable 28 between a window frame and the top plate part of the operating room. The window 14 is raised and lowered by turning-ON/OFF an opening/closing operation switch 62, and when the window 14 is closed, the window is pushing-locked towards the window frame. The window lowering end position in the closing shift of the window 14 and the window raising end position in the opening shift are detected by comparing the load electric current generated in a motor 34M for driving the driving cable 28 with a standard signal, and the drive of the window 14 is suspended. In this case, the overload electric current detection of the motor 34M in the raising shift of the window 14 is brought into stop for a certain time after the start of the motor 34M. Further, the operation end position in the lock operation is judged by detecting the load electric current of a lock motor and comparing the load electric current with the standard electric current at the same time. |
