| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrier mechanism of a lens barrel that makes it possible to thin a lens barrier mechanism in an optical axis direction even with a structure having a lock protrusion for locking a barrier biasing spring provided on a face opposite a barrier support member of a barrier blade.SOLUTION: The lens barrier mechanism of a lens barrel comprises: a barrier support member 26 that is provided in a lens barrel; a barrier blade 35 that is rotatable between a closing position and an opening position; a barrier biasing spring that biases the barrier blade 35 toward the closing position; a barrier drive member that is movable to a position allowing the barrier blade 35 to rotate to the closing position and a position causing the barrier blade to be rotated to the opening position against biasing force of the barrier biasing spring; a lock protrusion 39 that is provided on the face opposite the barrier support member of the barrier blade at a position shifted from a rotation center part, protrudes onto a barrier support member side and locks a part of the barrier biasing spring; and a protrusion reception part 31 that is formed on a face opposite the barrier blade of the barrier support member, and is composed of a through-hole or dent part to which the lock protrusion is loosely fitted. |
