| 摘要 |
PURPOSE:To reduce the variations in the contact pressure of a diaphragm and a sound releasing plate and the minute displacements by this, reduce the variations in buzzer performance and achieve tightness and waterproofness by integrating the sound releasing plate and buzzer frame body. CONSTITUTION:A buzzer sound releasing plate 1a, formed integrally with a frame body 1b, is in contact with a diaphragm 3 in position 2. The buzzer frame body 1b is coupled to a case 5 by way of a packing 4 to be made in the construction hermetic to the outside air. Hence, the vibrations of the diaphragm 3 are released efficiently through the sound releasing plate 1a and the integration of the sound releasing plate 1a and frame body 1b enables the variations of the buzzer performances to be reduced. |
