US 12,303,940 B2
Vibration presenting device
Yuki Takahashi, Tokyo (JP); Tomoya Ishitani, Tokyo (JP); Takahiko Irie, Tokyo (JP); and Yasutaka Kitamura, Tokyo (JP)
Assigned to MINEBEA MITSUMI, Inc., Nagano (JP)
Filed by Yuki Takahashi, Tokyo (JP); Tomoya Ishitani, Tokyo (JP); Takahiko Irie, Tokyo (JP); and Yasutaka Kitamura, Tokyo (JP)
Filed on May 1, 2024, as Appl. No. 18/651,830.
Application 18/651,830 is a continuation of application No. 17/298,054, granted, now 12,005,477, previously published as PCT/JP2019/046105, filed on Nov. 26, 2019.
Claims priority of application No. 2018-225984 (JP), filed on Nov. 30, 2018.
Prior Publication US 2024/0278283 A1, Aug. 22, 2024
Int. Cl. H02P 25/032 (2016.01); B06B 1/02 (2006.01); B06B 1/04 (2006.01); H02K 33/02 (2006.01)
CPC B06B 1/045 (2013.01) [B06B 1/0207 (2013.01); H02K 33/02 (2013.01); H02P 25/032 (2016.02)] 4 Claims
OG exemplary drawing
 
1. A vibration presenting device comprising:
an operation device;
an electromagnetic actuator that supports the operation device, and includes:
a base part formed in a plate shape, in which an electromagnet including a core and a coil is disposed,
a movable part including a magnetic yoke formed in a plate shape, and disposed to face the electromagnet with a gap therebetween, and
an elastic part formed in a plate shape, and configured to connect the base part and the movable part respectively such that the base part and the magnetic yoke are relatively displaced by energizing the electromagnet,
wherein the base part, the movable part, and the elastic part are laminated in a thickness direction of the base part, and the movable part has, at a position opposite the coil, a shape into which a part of the coil can be inserted; and
a control device configured to control the electromagnetic actuator to vibrate the operation device in a vibration direction along a first direction by driving the operation device to one direction of the vibration direction, the first direction being a direction in which the base part and the magnetic yoke are relatively displaced,
wherein the control device includes a current pulse supply unit configured to supply a plurality of drive current pulses to the coil as a drive current for driving the operation device in response to a touch operation of the operation device, and
wherein an interval between peaks for each of the drive current pulses is in a range of ½ times to 1 times a vibration period of an elastic vibration of the operation device.