| 摘要 |
PURPOSE:To decrease the error of detection, by arranging a sensor at the side of an end part of a pivotally supporting pin and transmitting rotation directly to this sensor from said pin or a case. CONSTITUTION:With the rotation of a boom, a pivotally supporting pin 13 is relatively rotated to a boom bracket. This rotation angle is transmitted to a sensor main body 41 which is fixed to the side of a case main body 36 through an inputting shaft 42, is converted to an electrical signal in the sensor main body 41, and afterwards is transmitted to a controll device by a wiring. |
