Vibration presenting device

Patent metadata

Field	Value
Publication number	US-12303940-B2
Application number	US-202418651830-A
Country	US
Kind code	B2
Filing date	May 1, 2024
Priority date	Nov 30, 2018
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

Provided is a vibration presenting device includes an operation device; an electromagnetic actuator; and a control device. The electromagnetic actuator 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 disposed to face the electromagnet with a gap therebetween; and an elastic part 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 movable part has, at a position opposite the coil, a shape into which a part of the coil can be inserted. The control device is configured to control the electromagnetic actuator to vibrate the operation device.

First claim

The invention claimed is:

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.

2. The vibration presenting device according to claim 1 , wherein the elastic part is configured to connect the base part and the movable part at least one side of a pair of opposing sides of the base part.

3. The vibration presenting device according to claim 1 , wherein the base part includes an attaching part to support the elastic part at least one side of a pair of opposing sides of the base part.

4. The vibration presenting device according to claim 1 , wherein the movable part has a thickness within which the part of the coil can be accommodated.

Assignees

• Takahashi Yuki
• Ishitani Tomoya
• Irie Takahiko
• Kitamura Yasutaka
• Minebea Mitsumi Inc

Inventors

• Takahashi Yuki
• Ishitani Tomoya
• Irie Takahiko
• Kitamura Yasutaka

Classifications

• H02P25/032

  Reciprocating, oscillating or vibrating motors · CPC title

• H02K33/02 Primary

  with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs · CPC title

• B06B1/0207

  Driving circuits (specially adapted for particular applications, see the relevant subclass, e.g. G01; circuits for steering transducer arrays G10K11/34; basic circuits H03) · CPC title

• G06F3/016

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• B06B1/045 Primary

  using vibrating magnet, armature or coil system · CPC title