US 12,113,418 B2
Vibration actuator and vibration presentation device
Yuki Takahashi, Tokyo (JP); Kazutaka Sakaguchi, Tokyo (JP); and Tomoya Ishitani, Tokyo (JP)
Assigned to Minebea Mitsumi Inc., Nagano (JP)
Filed by Yuki Takahashi, Tokyo (JP); Kazutaka Sakaguchi, Tokyo (JP); and Tomoya Ishitani, Tokyo (JP)
Filed on Sep. 28, 2021, as Appl. No. 17/487,130.
Claims priority of application No. 2020-163995 (JP), filed on Sep. 29, 2020.
Prior Publication US 2022/0103054 A1, Mar. 31, 2022
Int. Cl. H02K 33/02 (2006.01); G06F 3/01 (2006.01); G06F 3/041 (2006.01); H02K 11/20 (2016.01); H02K 33/18 (2006.01)
CPC H02K 33/18 (2013.01) [G06F 3/016 (2013.01); G06F 3/041 (2013.01); H02K 11/20 (2016.01); H02K 33/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vibration actuator comprising:
a fixing body including a base part and a magnetic suction force generation part provided in the base part, the magnetic suction force generation part including a core on which a coil is wound;
a movable body including a presentation part connecting part connectable to a vibration presentation part, and a suction part composed of a magnetic material, the suction part being disposed to generate a suction force of the magnetic suction force generation part in a base extending direction; and
a first elastic support part and a second elastic support part connected to a top end part and a bottom end part, respectively, of the movable body, the top end part and the bottom end part being separated from each other in the base extending direction, the first elastic support part and the second elastic support part being configured to elastically support the movable body such that the movable body is movable in the base extending direction,
wherein the suction force is generated by energization to the coil, and a vibration along the base extending direction is applied to the vibration presentation part through the movable body.