Piezoelectric low-energy-consumption broadband warning device for automobile
A warning device, piezoelectric technology, applied in piezoelectric/electrostrictive transducer microphones, diaphragm structures, planar diaphragms, etc., can solve the problems of increasing production costs and expensive palladium prices
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0032] see figure 1 , 2 , a piezoelectric low-energy broadband warning device for automobiles, which includes an upper end surface opening, a housing 2 with a sound transmission hole 1 on the lower end surface, an installation cavity 3 inside the housing, and a vibration substrate 6 is fixedly arranged in the installation cavity of the housing , the inner wall of the housing is provided with an installation step surface 4, the basin frame 5 is fixedly arranged on the installation step surface 4, the vibration substrate 6 is fixedly arranged on the basin frame 5, the upper end surface of the vibration substrate 6 is provided with a composite piezoelectric sheet 7, and the lower end surface A vibrating film 8 is provided, the vibrating substrate 6 and the composite piezoelectric sheet 7 form a vibration base source, the vibrating film 8 and the ...
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