| 摘要 |
PURPOSE:To hardly make an error in a condition for preventing bound and to omit a moment-of-inertia adjusting device and adjusting work for correcting the error by making the shape of parts where a mirror member and a mirror receiving member collide, an involute curve. CONSTITUTION:The tooth surface 3a of an involute gear rotated with a shaft 5 as center is formed on a supporting member 3. One end of a spring 30 is attached to the supporting member 3 and the other end thereof is attached to a camera main body. A 45 deg. receiving member 22 can be rotated around a shaft 18 and energized counterclockwise by receiving the force of a spring 26. Then, the tooth surface 22a of the involute gear rotated with the shaft 18 as center is formed on the receiving member 22. Namely, since the shape of the parts where the mirror member and the mirror receiving member collide is made the involute curve, the common normal of the parts where they collide is hardly changed even when the position of the mirror member is adjusted, so that the condition for preventing the bound is hardly changed. |
