| 摘要 |
PURPOSE:To reduce or prevent the air resonance phenomenon by providing the diffused reflection part on the inner surface of the container for the piezoelectric oscillator. CONSTITUTION:Inner surface 31 of cover 3 of the oscillator features the diffused reflection part where the triangular waveform is formed continuously and entirely or the curved-surface or uneven waveform is formed over the entire surface. The sound wave generated in container 3 repeats the reflection at the diffused reflection part to avoid occurrence of the steady connection to the oscillator. As a result, the air resonance phenomenon caused by the ambient temperature change can be avoided. At the same time, container 3 can be formed into a body easily, and furthermore the shape of the inner surface can perform the reinforcement purpose. |
