Piezo actuator module for broadband-frequency haptic feedback
AssigneeIndustry-Academic Cooperation Foundation, Yonsei University
InventorsNo-Cheol Park, Whee Jae Kim, Young Jin Park
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Abstract
A piezo actuator module capable of haptic feedback in a wide frequency range comprises an actuator layer including a piezo actuator having one surface coupled to an object to be excited and vibrating by an electric signal and an inertial mass layer having a certain mass and coupled to the other surface of the actuator layer. The inertial mass layer supports the other surface of the actuator layer when the piezo actuator vibrates.
Claims10
A piezo actuator module capable of haptic feedback in a wide frequency range comprising:
- an actuator layer including a piezo actuator having one surface coupled to an object to be excited and vibrating by an electric signal;
- an inertial mass layer having a certain mass and coupled to the other surface of the actuator layer,
- wherein the inertial mass layer supports the other surface of the actuator layer when the piezo actuator vibrates, and
- an intermediate layer provided between the object to be excited and the actuator layer or between the actuator layer and the inertial mass layer, and having a certain stiffness or a certain elastic force.
A piezo actuator module capable of haptic feedback in a wide frequency range comprising:
- an actuator layer including a piezo actuator having one surface coupled to an object to be excited and vibrating by an electric signal;
- an inertial mass housing having an enclosure shape with a hollow inside to accommodate the actuator layer, that is open on one side and closed on the other side,
- wherein the inertial mass housing includes a sealing surface having a certain mass and in contact with the other surface of the actuator layer, and a side surface extending to one side along a circumference of the sealing surface, and
- the inertial mass housing supports the other surface of the actuator layer when the piezo actuator vibrates;
- and
- an intermediate layer provided between the object to be excited and the actuator layer or between the actuator layer and the inertial mass housing, and having a certain stiffness or a certain elastic force.
Dependencies are inferred from the claim text.