Title:
カメラ用フォーカルプレンシャッタ
Document Type and Number:
Japanese Patent JP5622601
Kind Code:
B2
Abstract:
In a first blade unit-driving unit which is rotated by elastic force of a first blade unit-driving spring in shooting, its driving pin rotates a first brake member counterclockwise and a second brake member clockwise against the elastic force of a coil spring fitted to a fitting shaft and against friction resistance force of a friction-providing part including a plate spring or the like at the final stage of the rotation of the first blade unit-driving unit, the plate spring being fitted to the fitting shaft, so that the first blade unit-driving unit is braked, and, at this point, one end part of the first blade unit-driving spring contacts a part to be pushed of the first brake member and controls the counterclockwise rotation of the first brake member, so that braking force to the first blade unit-driving unit acts on the first blade unit-driving unit larger and more surely.
Inventors:
河上 健太
Application Number:
JP2011018694A
Publication Date:
November 12, 2014
Filing Date:
January 31, 2011
Export Citation:
Assignee:
日本電産コパル株式会社
International Classes:
G03B9/36
Attorney, Agent or Firm:
Patent business corporation Shinohara international patent firm
Taiji Shinohara
Masayuki Fujinaka
Taiji Shinohara
Masayuki Fujinaka
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