| 摘要 |
PURPOSE:To prevent malfunction orignated from a dropping accident, etc., by providing a counterbalance which offsets torque generated when a shock is applied, separately from the 2nd lock lever and an attracting piece lever, and linking the counter balance with those levers. CONSTITUTION:If a camera is dropped and applied with a strong shock from below, downward torque to respective members of an electromagnetic releasing device is generated and torque which is counterclockwise around shafts 7a and 11a is generated to the 2nd lock lever 7 and attracting piece lever 11. On the other hand, torque which is counterclockwise around a shaft 15a is generated to the counterbalance 15. In this case, the distances from the engagement part between a columnar projections 11c and a fork part 15c to the shafts 11a and 15a are set properly to cancel the torque of the columnar projection 11c and fork part 15c completely, thereby preventing completely the attracting piece lever 11 from rotating. |
