| 摘要 |
PURPOSE:To excite the primary harmonic strongly, by coupling an electrode lead provided at the side of a tuning fork oscillator base and an electrode of piezoelectric transducer with a narrow straight line connecting electrode formed by being made excentric at the outside from the center line of oscillator legs. CONSTITUTION:One outer side surface of the tuning fork oscillating legs 12, 12 and one side surface of a base 13 leading to it are formed with a piezoelectric film 14, a square electrode 15 is formed on the film 14 and the electrode 15 and the film 14 form a piezoelectric transducer 16. The electrode 15 of the transducer 16 is formed between a bottom 18 and a tip of the legs 12, 12 by taking the bottom 18 of a tuning fork groove 17 formed between the legs 12, 12 of the oscillator 11 as a reference. The electrode lead 19 is provided on the film 14 of the base 13 of the oscillator 11. The electrode lead 19 and the electrode 15 of the transducer 16 are mutually coupled with the narrow straight line connecting electrode 20 formed by being made excentric to the outside than the center line of the legs 12, 12. Thus, the fundamental wave is suppressed and the primary harmonic is excited. |
