Title:
BLADE UNIT MECHANISM OF SHUTTER
Document Type and Number:
Japanese Patent JP2017097126
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a blade unit mechanism of a shutter that improves durability by decentralizing and reducing stress generated owing to an impact in completion of a travel of a shutter blade group, and further suppresses bounding.SOLUTION: The shutter has a link mechanism constituted by: a shutter blade group; a pair of blade arms; a plurality of coupling pins fastened to the shutter blade group to couple with the pair of blade arms; and at least one connection member fastened to two of the coupling pins for each shutter blade between the pair of blade arms. The two coupling pins each have an end fixed and fastened to the shutter blades, and the other end fixed and fastened to the connection member, an intermediate part arranged with a gap left such that while shutter blades at both end parts and the connection member are separated, the blade arms are rotatable, and at least one of the connection member and blade arm nearby one of the coupling pins is provided with a projection part such that gaps between the shutter blades and blade arms, and the connection member become narrower in a travel complete state than before a travel start and during a travel.SELECTED DRAWING: Figure 1
Inventors:
SUZUKI MASAAKI
MATSUI TAKESHI
MATSUI TAKESHI
Application Number:
JP2015228290A
Publication Date:
June 01, 2017
Filing Date:
November 24, 2015
Export Citation:
Assignee:
CANON KK
International Classes:
G03B9/36
Attorney, Agent or Firm:
Yukio Takanashi
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