ELETROMEKANISK TUNGFILTERANORDNING

摘要

Herein disclosed is a reed type electromechanical filter device which comprises a vibrator element having a pair of spaced parallel arm portions adapted to vibrate in lateral directions, a pair of piezoelectric ceramic plates or electromechanical transducer elements mounted on the arm portions of the vibrator element, and a pair of elastic metal members respectively mounted on the outer side faces of the arm portions and/or a pair of elastic metal members respectively mounted on the inner side faces of the arm portions. The elastic metal members are effective to prevent the arm portions from directly striking against each other and/or the inner faces of side walls of a housing enclosing the vibrator element in the event the filter device is subjected to a violent impact which would otherwise cause deterioration of the performance quality of the filter device.