Focal plane shutter for cameras
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United States of America Patent
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Oct 8, 2013
Grant Date -
May 30, 2013
app pub date -
Nov 30, 2012
filing date -
Nov 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In a focal plane shutter according to the present invention, a support plate is placed while a plate plane of the support plate is parallel to a shutter base plate, a second blade-driving member is fitted to a shaft erectly provided on the shutter base plate, the second blade-driving member being rotated by the biasing force of a second blade-driving spring, an electromagnet for second blade is fitted to the support plate, the electromagnet attracting and holding an iron piece member fitted to the second blade-driving member, a printed wiring board on which a wiring pattern for supplying electric current to the electromagnet is formed is placed in a hole formed in the support plate, and terminal pins of the electromagnet are soldered to the both ends of a coil.
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