| 摘要 |
PROBLEM TO BE SOLVED: To obtain a device which can be disposed in a narrow space and is excellent in assemblability by fixing one end of an elastic switch contact piece at the common potential part of a code disk fixed on the back surface of a dial member in a conductive state and engaging the free end thereof with a button switch. SOLUTION: The code disk 25 is arranged on the back surface side of an upper decorative board 11 in order to detect the scale position of a dial 13, that is, the rotating position of the dial 13. When a sliding position between the code disk 25 and a brush 31 is changed because of the rotation of the dial 13, the contact state of a code surface 25a corresponding to the contact pieces 31a to 31d is changed and detected as an electrical signal showing the position of a photographing mode selected by the dial 13. The elastic switch contact piece 28 consisting of an elastic and conductive plate material is fixed at the lower part of the code disk 25. Namely, one end of the contact piece 28 is fixed at the common potential part of the code disk 25 in the conductive state and the free end thereof is engaged with the button switch. |
