Title:
BLADE DRIVE DEVICE AND IMAGING APPARATUS COMPRISING THE SAME
Document Type and Number:
Japanese Patent JP2022147039
Kind Code:
A
Abstract:
To provide a blade drive device which is suppressed in decrease of durability and furthermore can operate at high speed.SOLUTION: A blade drive device 1 comprises: a base plate 10; blades 31-38; a rotary shaft 21 fitted to the base plate 10; a drive lever 50 which comprises a coupling section 45 coupled to the blades 31-34, rotates around the rotary shaft 21 to thereby move the coupling section 45 along a movement path resulting in driving of the blades 31-34; a support shaft 63 fitted to the base plate 10; a friction brake member 67 rotatable around the support shaft 63; and a washer 70 which is fitted to the support shaft 63 to generate friction between itself and the friction brake member 67. The friction brake member 67 is configured to contact the coupling section 45 on the movement path of the coupling section 45. The washer 70 has: an inner peripheral edge 710 defining a circular hole 700 for inserting the support shaft 63 therein; and a circular disk portion 730 extending toward outside in a radial direction from the inner peripheral edge 710. In the circular disk portion 730, there is provided a plurality of lubricant holding holes 701, 702 penetrating in the circular disk portion 730 in a Z direction.SELECTED DRAWING: Figure 5
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Inventors:
KAWAKAMI KENTA
Application Number:
JP2021048123A
Publication Date:
October 06, 2022
Filing Date:
March 23, 2021
Export Citation:
Assignee:
NIDEC COPAL CORP
International Classes:
G03B9/08
Attorney, Agent or Firm:
Tomohiro Mori