| 摘要 |
PURPOSE:To improve assembling work and to enhance reliability, by constituting a driving and transmitting mechanism by a cam member which is linked to an actuating member only when the actuating member is returned and rotated and a rotary member which is linked to the cam member and drives a display device in the direction of the overcurrent passage indication, thereby reducing the number of component parts. CONSTITUTION:A string shaped member 11 is fixed to an engaging knob 9 of a lifting member 6 as the rotary member and to a slit 10a, respectively. The string shaped member 11 is extended to the side of a display tube 18 through a guide hole 8. When the rotary member 6, which has finished the string shaped member 11 can be bent upward between the guide hole 8 and the slit 10a. In this way, the operations of the driving and transmitting mechacism and the display device Ican be ensured without hooking the string shaped member 11 to the other member. Since the cam member is bent by an elasitc engaging part 13, the manufacture is facilitated. |
