ASCENDING/DESCENDING FREQUENCY COUNTING DEVICE OF SHUTTER

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive ascending/descending frequency counting device having a simple structure.;SOLUTION: This device is constituted by being equipped with interlocking gears 13b, 17, 18 rotated sequentially with a winding drum of a shutter curtain and a power transmission means 23 connected to the interlocking gears 13b, 17, 18, for transmitting the power of the interlocking gears 13b, 17, 18 to a star gear 26 operated sequentially with a counter for counting the ascending/ descending frequency of the shutter curtain.;COPYRIGHT: (C)2002,JPO