Multi-directional actuating module

Patent metadata

Field	Value
Publication number	US-10635178-B2
Application number	US-201916526556-A
Country	US
Kind code	B2
Filing date	Jul 30, 2019
Priority date	Jun 14, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

One embodiment provides a multi-directional actuating module capable of moving in various directions and capable of delivering various tactile senses such as knocking or rubbing as well as vibration by controlling at least one of the intensity, direction or frequency of a magnetic field generation unit. Further, the multidirectional actuating module according to one embodiment may comprise: a moving body capable of moving in at least two or more axial directions by means of an external magnetic field; a support for supporting the moving body so as to be movable; and at least two or more magnetic field generation units which are in the form of a coil to generate the magnetic field.

First claim

The invention claimed is:

1. A haptic device comprising:
at least two magnetic field generators configured to generate a magnetic field;
a moving body configured to move three-dimensionally by the magnetic field generated by the at least two magnetic field generators, the moving body including magnetic particles;
a support configured to support the moving body to be movable; and
a controller configured to provide tactile senses comprising at least one of tapping, rubbing or twisting in addition to a vibration by controlling at least one of a frequency, a direction or an intensity of currents which applied to the at least two magnetic field generators.

2. The haptic device of claim 1 , wherein the support comprising:
a support wall configured to encompass the moving body; and
at least one connector configured to connect the support wall and the moving body and formed of a deformable material.

3. The haptic device of claim 2 , wherein the at least two magnetic field generators are arranged above or below the moving body, and
the connector is disposed on a periphery of a side surface of the moving body.

4. The haptic device of claim 3 , wherein the at least two magnetic field generators comprising:
a first magnetic field generator disposed on a first side; and
a second magnetic field generator disposed on a second side opposite to the first side relative to the moving body.

5. The haptic device of claim 4 , wherein the connector comprises:
a first connector disposed on the first side relative to the moving body; and
a second connector disposed on the second side relative to the moving body.

6. The haptic device of claim 4 , wherein a distance between a center of the first magnetic field generator and a center of the second magnetic field generator ranges between 90% and 110% of a length of one side of the moving body laid in a direction traversing the centers of the first and second magnetic field generators.

7. The haptic device of claim 4 , wherein coils of the first magnetic field generator and the second magnetic field generator are formed in an ellipse or circle shape.

8. The haptic device of claim 2 , wherein, based on an X-Y plane on which a zero point is a center of the moving body, the at least two magnetic field generators comprise:
a first magnetic field generator disposed on a +Y axis based on the moving body;
a second magnetic field generator disposed on a +X axis based on the moving body;
a third magnetic field generator disposed on a −Y axis based on the moving body; and
a fourth magnetic field generator disposed on a −X axis based on the moving body.

9. The haptic device of claim 8 , wherein the second magnetic field generator and the fourth magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in an X-axial direction, and
the first magnetic field generator and the third magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in a Y-axial direction.

10. The haptic device of claim 8 , wherein a pair of the first magnetic field generator and the second magnetic field generator and a pair of the third magnetic field generator and the fourth magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in a Y=X line direction, and
a pair of the first magnetic field generator and the fourth magnetic field generator and a pair of the second magnetic field generator and the third magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in a Y=−X line direction.

11. The haptic device of claim 2 , wherein, based on the X-Y plane on which the zero point is the center of the moving body, the at least two magnetic field generators comprise:
a first magnetic field generator disposed in a first quadrant based on the moving body;
a second magnetic field generator disposed in a second quadrant based on the moving body;
a third magnetic field generator disposed in a third quadrant based on the moving body; and
a fourth magnetic field generator disposed in a fourth quadrant based on the moving body.

12. The haptic device of claim 11 , wherein a pair of the first magnetic field generator and the second magnetic field generator and a pair of the third magnetic field generator and the fourth magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in an X-axial direction, and
a pair of the first magnetic field generator and the fourth magnetic field generator and a pair of the second magnetic field generator and the third magnetic field generator are configured to generate magnetic fields of opposite directions to allow the moving body to move in a Y-axial direction.

13. A haptic device comprising:
a plurality of magnetic field generators configured to generate a magnetic field;
a moving body configured to move three-dimensionally by the magnetic field generated by the plurality of the magnetic field generators, the moving body including magnetic particles;
a support configured to support the moving body to be movable; and
a controller configured to provide at least one tactile sense which includes vibration, tapping, rubbing or twisting by applying a first current to a first magnetic field generator of the plurality of the magnetic field generators and a second current which is not same as the first current to a second magnetic field generator of the plurality of the magnetic field generators.

14. The haptic device of claim 13 , wherein the first current is an alternating current, and the second current is a direct current.

15. The haptic device of claim 13 , wherein, the plurality of magnetic field generators comprises a first magnetic field generator, a second magnetic field generator, a third magnetic field generator, and a fourth magnetic field generator, and
wherein the four magnetic field generators are disposed separately in different directions based on the center of the moving body.

16. The haptic device of claim 15 , wherein the controller is configured to apply an alternating current to the first magnetic field generator, and
wherein the controller is configured to apply, to the second, the third, and the fourth magnetic field generators, direct currents that allow the second, the third, and the fourth magnetic field generators to provide a repulsive force to the moving body.

17. The haptic device of claim 15 , wherein the controller is configured to apply alternating currents to the first and the fourth magnetic field generators, and
wherein the controller is configured to apply, to the second and the third magnetic field generators, direct currents that allow the second and the third magnetic field generators to provide a repulsive force to the moving body.

Assignees

• Ck Mat Lab Co Ltd

Inventors

• Kim Hyeong Jun
• Lee Jong Hun
• Kim Nam Seok
• Park Myung Sun
• Kang Ji Goo

Classifications

• H01F2007/086

  Structural details of the armature · CPC title

• H02K33/16

  with polarised armatures moving in alternate directions by reversal or energisation of a single coil system · CPC title

• G06F3/016 Primary

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

• H01F7/1638

  Armatures not entering the winding · CPC title

• H01F7/14

  Pivoting armatures (H01F7/17 takes precedence) · CPC title