SHUTTER BLADE OPENING AND CLOSING DEVICE AND IMAGING DEVICE

Title:

SHUTTER BLADE OPENING AND CLOSING DEVICE AND IMAGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/230170

Kind Code:

A1

Abstract:

The purpose of the present invention is to reduce the size while securing good functionality by a power assist spring. A shutter blade opening and closing device comprises: a magnetic driving unit having a coil to which driving current is supplied, and a magnet that rotates when the coil is energized; a driving lever to be operated by the magnetic driving unit; an opening and closing shutter blade that opens and closes an opening by the operation of the driving lever; and a power assist spring for applying a biasing force to the driving lever in at least the operation direction of the driving lever. The power assist spring is located on the opposite side of the driving lever across the magnet. Thus, the driving lever for operating the opening and closing shutter blade and the power assist spring for applying the biasing force to the driving lever in the operation direction are located on the opposite sides across the magnet, and hence the power assist spring and the driving lever do not interfere with each other and the degree of freedom of arrangement of the power assist spring and the driving lever is increased. As a result, the size can be reduced while securing good functionality by the power assist spring.

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Inventors:

YONEDA MASAFUMI (JP)
HAYASHI TOSHIRO (JP)

Application Number:

PCT/JP2018/016869

Publication Date:

December 20, 2018

Filing Date:

April 25, 2018

Export Citation:

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Assignee:

SONY CORP (JP)

International Classes:

G03B9/36; G03B9/02

Foreign References:

JPH02105123A	1990-04-17
JPH05216090A	1993-08-27
JPS6144191U	1986-03-24
JPS62223735A	1987-10-01

Other References: