Piezoelectric speaker
AssigneesAac Acoustic Technologies (Shenzhen) Co., Ltd., American Audio Components Inc.
InventorsLin Liu, Jie He, Sheng-Ping Yu
Life of this patent
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Abstract
A piezoelectric speaker includes a cover with a receiving space and a vibrating speaker unit accommodated in the receiving space. The vibrating speaker unit includes a piezoelectric oscillator including an upper surface and an lower surface, a diaphragm disposed on the upper surface of the piezoelectric oscillator, and a vibrating member kept a distance from the lower surface of the piezoelectric oscillator. The piezoelectric oscillator defines a first amplitude capable of driving the diaphragm only and a second amplitude driving both the vibrating member to vibrating with a largest amplitude and the diaphragm to generate sound. The distance is larger than the first amplitude and smaller than the second amplitude.
Claims20
A piezoelectric speaker, comprising:
- a cover with a receiving space;
- a vibrating speaker unit accommodated in the receiving space, including a piezoelectric oscillator including an upper surface and an lower surface, a diaphragm disposed on the upper surface of the piezoelectric oscillator, and a vibrating member kept a distance from the lower surface of the piezoelectric oscillator;
- wherein
- the piezoelectric oscillator defines a first amplitude capable of driving the diaphragm only and a second amplitude driving both the vibrating member to vibrating with a largest amplitude and the diaphragm to generate sound, the distance is larger than the first amplitude and smaller than the second amplitude.
A piezoelectric speaker, comprising:
- a cover with a receiving space;
- a vibrating speaker unit accommodated in the receiving space, including a piezoelectric oscillator including an upper surface and an lower surface, a diaphragm attached to the upper surface of the piezoelectric oscillator, and a vibrating member attached the lower surface of the piezoelectric oscillator;
- wherein
- vibration of the piezoelectric oscillator with any amplitude is capable of driving the diaphragm to generate sound and the vibrating member to vibrate;
- wherein the vibrating member includes a bracket with a main body, a protruding portion extending upwards from an upper face of the main body, and a supporting portion including a number of columns extending downwards from a lower face of the main body.
A piezoelectric speaker, comprising:
- an upper cover with a number of sound holes;
- a lower cover with a number of through holes;
- a piezoelectric oscillator disposed between the upper cover and the lower cover;
- a diaphragm disposed on an upper surface of the piezoelectric oscillator;
- a vibrating member disposed under the piezoelectric oscillator;
- wherein
- the vibrating member defines a main body, a protruding portion extending upwards from the main body, a supporting portion extending downwards from the main body and passing through the through holes of the lower cover, and a spring assemble to the supporting portion for the vibrating member capable of moving up and down.
Dependencies are inferred from the claim text.