| 摘要 |
PURPOSE:To decrease the number of components and save the space by making two inside adjacent support means common among four support means which support both ends of a couple of belts and supporting endless belts which drive a lens part and a mirror part by three support means. CONSTITUTION:Inside adjacent support shafts 58 and 59 among four support shafts 57 - 60 which support both ends of the belts 65 and 66 are made common into one support shaft 73 to use the 1st support shaft 57, the 2nd support shaft 60, and the 3rd support shaft 73. Two pulleys 74 and 75 and a collar 76 are fixed on the support shaft 73 and one end 73a is fitted rotatably to one side of a frame 51. Then the pulleys 74 and 75 and collar 76 are fitted to the support shaft 73 successively in contact and the endless belts 66 and 65 are clamped between flange parts 74a and 75a, 75a and 76a. Consequently, only three support shafts are required, the number of components is decreased, and the space is saved. |
