| 摘要 |
PROBLEM TO BE SOLVED: To be sure to bring a blade tip part into contact with an elastic member arranged in a bottom plate when blade travelling is ended in a shutter device employing the bottom plate having a guide shape for pressing the blade tip part formed by an integral molding.SOLUTION: A shutter device comprises: a bottom plate that has an opening part for exposure; a rear blade group that has a plurality of blades and travels from a state where the plurality of blades are superimposed and the opening part is opened to a state where the plurality of blades are spreaded and the opening part is closed; a front blade group that has a partition plate holding the rear blade group so as to sandwich the rear blade group between the bottom plate and the partition plate and the plurality of blades and travels from the state where the plurality of blades are spreaded and the opening is closed and to the state where the plurality of blades are superimposed and the opening is opened; a cover plate that holds the front blade group so as to sandwich the front blade between the partition plate and the cover plate; and an elastic member that relaxes an impact when the rear blade group travelling and the front blade group travelling are ended. The bottom plate is formed of synthetic resin, and the guide part, which guides a tip part of the rear blade group and is provided such that a height toward the partition plate from the bottom plate is gradually lowered toward a direction of the rear blade group travelling, is integrally molded to the bottom plate. |
