Piezoelectric actuator for haptic device
A haptic device includes a flexible holder; an elongated piezo bender supported at one end thereof by the holder; a mass supported by the elongated piezo bender and positioned at an end of the elongated piezo bender opposite the end supported by the holder; and an electrical driving signal generator configured to generate a signal to create a vibration in the elongated piezo bender.
1. A haptic device, comprising:
a flexible holder;
an elongated piezo bender supported at one end thereof by the holder;
a mass supported by the elongated piezo bender and positioned at an end of the elongated piezo bender opposite the end supported by the holder; and
an electrical driving signal generator configured to generate a signal to create a vibration in the elongated piezo bender.
2. The haptic device according to claim 1 , wherein the flexible holder comprises a structure and an epoxy material configured to attach the elongated piezo bender to the structure.
3. The haptic device according to claim 1 , wherein a clamping factor provided by the flexible holder is between about 1 and about 3.
4. The haptic device according to claim 3 , wherein the clamping factor is between about 1 and about 2.
5. The haptic device according to claim 4 , wherein the clamping factor is between about 1 and about 1.5.
6. The haptic device according to claim 1 , further comprising a cover configured to cover the elongated piezo bender and the mass.
7. The haptic device according to claim 6 , further comprising a stop positioned between the cover and the elongated piezo bender.
8. The haptic device according to claim 6 , further comprising a stop positioned between the cover and the mass.