US 12,191,737 B2
Rotary reciprocating driving actuator
Yuki Takahashi, Tokyo (JP); Yasutaka Kitamura, Tokyo (JP); and Masaharu Kagami, Tokyo (JP)
Assigned to Mitsumi Electric Co., Ltd., Tokyo (JP)
Filed by Yuki Takahashi, Tokyo (JP); Yasutaka Kitamura, Tokyo (JP); and Masaharu Kagami, Tokyo (JP)
Filed on Jun. 30, 2022, as Appl. No. 17/854,018.
Claims priority of application No. 2021-109245 (JP), filed on Jun. 30, 2021.
Prior Publication US 2023/0006526 A1, Jan. 5, 2023
Int. Cl. H02K 33/12 (2006.01); G02B 26/08 (2006.01); G02B 26/12 (2006.01)
CPC H02K 33/12 (2013.01) [G02B 26/0816 (2013.01); G02B 26/121 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A rotary reciprocating driving actuator comprising:
a movable member including a shaft part to which a movable object is connected and a magnet fixed to the shaft part; and
a fixing body including a core assembly including a magnetic pole core with an integral structure including a plurality of magnetic poles, a plurality of coils disposed next to the plurality of magnetic poles, and a magnetic path core to which the magnetic pole core is assembled, wherein the core assembly is disposed such that the plurality of magnetic poles faces an outer periphery of the magnet, wherein
a magnetic flux that passes through a magnetic path configured of the magnetic path core and the magnetic pole core of the integral structure is generated through energization of the plurality of coils, and the movable member is rotated back and forth around an axis of the shaft part through electromagnetic interaction of the magnetic flux and the magnet.