Haptic actuator module and assembly using electrostatic attraction and pin stimulation

Patent metadata

Field	Value
Publication number	US-2025296116-A1
Application number	US-202519089300-A
Country	US
Kind code	A1
Filing date	Mar 25, 2025
Priority date	Mar 25, 2024
Publication date	Sep 25, 2025
Grant date	—

Abstract

A haptic actuator module using electrostatic attraction and pin stimulation according to the present invention may include a dielectric elastomer, a first electrode disposed to adjoin a lower surface region that is a lower surface of the dielectric elastomer, a second electrode disposed to adjoin a first upper surface region that is a partial region of an upper surface of the dielectric elastomer, and a module housing having therein an accommodation region configured to accommodate the dielectric elastomer, the first electrode, and the second electrode, the module housing being configured such that an outer surface region, which is an outer surface of the dielectric elastomer, adjoins an inner surface of the accommodation region.

First claim

What is claimed is:

1 . A haptic actuator module using electrostatic attraction and pin stimulation, the haptic actuator module comprising:
a dielectric elastomer; a first electrode disposed to adjoin a lower surface region that is a lower surface of the dielectric elastomer; a second electrode disposed to adjoin a first upper surface region that is a partial region of an upper surface of the dielectric elastomer; and a module housing having therein an accommodation region configured to accommodate the dielectric elastomer, the first electrode, and the second electrode, the module housing being configured such that an outer surface region, which is an outer surface of the dielectric elastomer, adjoins an inner surface of the accommodation region.

2 . The haptic actuator module of claim 1 , further comprising:
a third electrode disposed to adjoin a third upper surface region that is a partial region of a second upper surface region that is an upper surface of the dielectric elastomer that does not adjoin the second electrode; and a protruding pin having a predetermined thickness and disposed above the third electrode.

3 . The haptic actuator module of claim 2 , wherein the module housing has a module cover configured to open or close the accommodation region, and an upper surface of the protruding pin adjoins a lower surface of the module cover.

4 . The haptic actuator module of claim 3 , further comprising:
a power source configured to supply a voltage between the first electrode and the second electrode, wherein a first elastomer region of the dielectric elastomer, which is disposed below the first upper surface region and between the first electrode and the second electrode, is compressed and decreased in thickness by electrostatic attraction when a voltage is applied between the first electrode and the second electrode.

5 . The haptic actuator module of claim 4 , wherein a second elastomer region of the dielectric elastomer, which is disposed below the second upper surface region and is the remaining region other than the first elastomer region, increases in thickness while corresponding to the decrease in thickness of the first elastomer region when the voltage is applied between the first electrode and the second

6 . The haptic actuator module of claim 5 , wherein the third electrode and the protruding pin are raised by the increase in thickness of the second elastomer region when the voltage is applied between the first electrode and the second electrode.

7 . The haptic actuator module of claim 5 , wherein the module cover protrudes upward as the third electrode and the protruding pin are raised by the increase in thickness of the second elastomer region when the voltage is applied between the first electrode and the second electrode.

8 . A haptic actuator assembly using electrostatic attraction and pin stimulation, the haptic actuator assembly comprising:
a plurality of haptic actuator modules using electrostatic attraction and pin stimulation according to claim 1 ; and an assembly controller configured to provide haptics by applying voltages between first and second electrodes of one or more haptic actuator modules using electrostatic attraction and pin stimulation among the plurality of haptic actuator modules using electrostatic attraction and pin stimulation, wherein the plurality of haptic actuator modules using electrostatic attraction and pin stimulation are disposed adjacent to one another.

Assignees

• Seoul Nat Univ R&Db Foundation

Inventors

• Heo Yong Hae
• Song Yuk Gwon
• Park Su Jin
• Ha Ji Soo
• Kim Sang Youn

Classifications

• H10N30/87

  Electrodes or interconnections, e.g. leads or terminals · CPC title

• H10N30/20

  with electrical input and mechanical output, e.g. functioning as actuators or vibrators · CPC title

• G06F3/016 Primary

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

• B06B1/0292 Primary

  Electrostatic transducers, e.g. electret-type · CPC title