BLADE DRIVE DEVICE AND SHUTTER DEVICE AS WELL AS IMAGING DEVICE

• Main Author: SHIBATA MITSUO
• Format: Patent
• Language: English; Japanese
• Published: 05.01.2017
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a blade drive device and shutter device as well as imaging device that can achieve highly accurate blade drive with bound operation reduced.SOLUTION: A blade drive device comprises: an opening formation member 1 that forms an opening part 1b; blades 2 and 3; and a power transmission member 6. The power transmission member 6 is held rotatably to the opening formation member 1, and in the opening formation member 1, an oscillated part 1g is provided that includes second slopes 1i and 1h with which a slide part provided in the power transmission member 6 and having a first slope 6b engages, and slidingly contacting with the first slope 6b accompanied by rotation of the power transmission member 6. In a process where the power transmission member 6 rotates, the first slope 6b and second slopes 1i and 1h are caused to be slidingly contacted with each other at timing of any of before the blade operation is halted by abutting of the blades 2 and 3 with respect to an abutting part provided in the opening formation member 1, or before an operation of the power transmission member 6 is halted by abutting of the blades 2 and 3 and an engagement part of the power transmission member 6 with respect to the abutting part provided in the opening formation member 1.SELECTED DRAWING: Figure 1 【課題】バウンド動作を低減して、高精度な羽根駆動を実現できる羽根駆動装置及びシャッタ装置並びに撮像装置を提供する。【解決手段】開口部１ｂを形成する開口形成部材１と、羽根２、３と、動力伝達部材６と、を備え、動力伝達部材６は、開口形成部材１に対して回動可能に保持され、開口形成部材１には、動力伝達部材６に設けられた第１斜面６ｂを有する摺動部が係合し且つ動力伝達部材６の回動に伴って第１斜面６ｂに摺接する第２斜面１ｉ、１ｈを有する被摺動部１ｇが設けられ、動力伝達部材６が回動する過程において、開口形成部材１に設けられた当接部に対する羽根２、３の当接によって羽根の動作が停止する前、又は、開口形成部材１に設けられた当接部に対する羽根２、３及び動力伝達部材６の係合部の当接によって動力伝達部材６の動作が停止する前のいずれかのタイミングで、第１斜面６ｂと前記第２斜面１ｉ、１ｈとを摺接させるようにする。【選択図】図１