US 12,005,477 B2Granted

Control device

AssigneeMINEBEA MITSUMI Inc.

InventorsYuki Takahashi, Tomoya Ishitani, Takahiko Irie, Yasutaka Kitamura

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Abstract

Provided is a control device capable of reducing cost and thickness by using an electromagnetic actuator, and capable of efficiently generating a thrust suitable for a haptic feeling feedback to an operator who touches and operates thereto. The control device controls the electromagnetic actuator that drives an operation device supported to be elastically vibrated in one direction of a vibrating direction thereof; includes a current pulse supply unit configured to supply a plurality of drive current pulses to a coil of the electromagnetic actuator as a drive current for driving the operation device in response to a touch operation of the operation device; and 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.

Claims10

Dependent claims

A vibration presenting device comprising:

an operation device;
an electromagnetic actuator that supports the operation device, and includes:
a core assembly formed by winding a coil around a core,
a yoke disposed to face the core assembly and formed in a shape surrounding the coil, and
an elastic support part configured to connect between the core assembly and the yoke;
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 orthogonal to a winding axis of the coil,
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.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/298,054Filed 26 Nov 2019
Priority: JP 2018-22598430 Nov 2018
Published: US 2022/0111418 A114 Apr 2022
Granted: 11 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B06B 1/045
Operating with electromagnetism: using vibrating magnet, armature or coil system
B06B 1/0207
Making use of electrical energy: driving circuits
G06F 3/016
Input arrangements or combined input and output arrangements for interaction between user and computer: input arrangements with force or tactile…
H02K 33/02
Motors with reciprocating, oscillating or vibrating magnet, armature or coil system: with armatures moved one way by energisation of a single coil…

Family

US 2022/0111418 A1Pre-grant publication · published 14 Apr 2022
US 12,005,477 B2This patent

From the US filing history. Foreign family members aren’t listed.

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