| 摘要 |
PROBLEM TO BE SOLVED: To improve electrical safety of mounts without increasing cost, weight, and so on and without decreasing durability. SOLUTION: The body side mount 18 is provided with a body side negative electrode contact 43 that has an external contact 26 and an internal contact 42. The external contact 26 is attached to the surface of a mount barrier 22 via segments 26a which are engaged with the back of the mount barrier 22. The internal contact 42 is provided with contact pins 42b which enter pin through-holes 22a in the mount barrier 22 and come into contact with the back of the external contact 26 when the mount barrier 22 is moved to an opening position. By attaching the lens side mount to the body side mount 18, the external contact 26 and a lens side negative electrode contact disposed on the back of the lens side mount come into contact with each other, and the external contact 26 and internal contact 42 also come into contact with each other. Consequently, the negative electrodes of the power sources for a lens unit and a camera body are connected. COPYRIGHT: (C)2007,JPO&INPIT |
