| 摘要 |
PURPOSE:To operate properly a backward annunciator by providing a change-over detecting switch in each change-over position of a forward and backward changing-over means to be connected respectively in series to the annunciator and closing one circuit in association with the operation of an operating attachment. CONSTITUTION:When a seat 33 is mounted on a forward sead mount 34, a forward arrangement detecting switch 87F is closed and a backward arrangement ditecting switch 87R is opened. And when a main switch 84 is closed and a shuttle lever 75 is changed over to the backward side to close a backward change-over detecting switch 82R, a circuit 96 is closed to operate an alarming buzzer 80. On the other hand, even if a forward change-over detecting switch 82 is closed, said buzzer 80 is not operated. On the contrary, when the seat 33 is mounted on a backward seat mount 56, the switch 87F is opened and the switch 87R is closed so that the alarming buzzer 80 for a driver is operated only in the backward running. Thus, one of both circuits 95, 96 is closed and the other is opened in association with arrangement change of the seat 33, so that a backward annunciator 88 can be prevented from improper operation caused by carelessness of the driver. |
