JPS61111299U

JPS61111299U -

Info

Publication number: JPS61111299U
Application number: JP18426784U
Authority: JP
Priority date: 1984-12-06
Filing date: 1984-12-06
Publication date: 1986-07-14

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図は本考案の圧電振動装置の
一実施例を示す縦断面図および斜視図、第３図は
第１図に示す圧電振動子の斜視図、第４図および
第５図は第１図の音通孔の形成位置を説明するた
めの断面図および平面図、第６図は本考案の圧電
振動装置の他の実施例を示す部分縦断面図、第７
図および第８図は従来の圧電振動装置を示す縦断
面図および斜視図、第９図は本考案および従来の
圧電振動装置が示す周波数に対する音圧の特性図
である。１……ケース、２……段部、３……導電板、４
……圧電板、５……圧電振動子、６……弾性接着
剤、７……端面部、８……音通孔、９……回路基
板、１０……内部空間、１２……振動領域、１３
……第１の領域、１４……第２の領域。 1 and 2 are longitudinal sectional views and perspective views showing an embodiment of the piezoelectric vibrating device of the present invention, FIG. 3 is a perspective view of the piezoelectric vibrator shown in FIG. 1, and FIGS. 4 and 5. 1 is a sectional view and a plan view for explaining the formation position of the sound passage hole, FIG. 6 is a partial vertical sectional view showing another embodiment of the piezoelectric vibrating device of the present invention, and FIG.
8 and 8 are longitudinal sectional views and perspective views showing a conventional piezoelectric vibrating device, and FIG. 9 is a characteristic diagram of sound pressure with respect to frequency exhibited by the piezoelectric vibrating device of the present invention and the conventional piezoelectric vibrating device. 1... Case, 2... Step part, 3... Conductive plate, 4
... Piezoelectric plate, 5 ... Piezoelectric vibrator, 6 ... Elastic adhesive, 7 ... End face portion, 8 ... Sound hole, 9 ... Circuit board, 10 ... Internal space, 12 ... Vibration region, 13
...first area, 14...second area.

Claims

【実用新案登録請求の範囲】円板状の圧電振動子と、この圧電振動子を内部に支持したケースと、このケースに形成された複数の音通孔と、を備えてなる圧電振動装置において、前記圧電振動子の振動領域における直径方向の
中央６０％の長さ部分で形成される領域を第１の
領域とし、前記ケースにあつて前記第１の領域に重なるよ
うに対向する領域を第２の領域とし、前記複数の音通孔が全て前記第２の領域より外
側に形成されてなることを特徴とする圧電振動装
置。[Scope of Claim for Utility Model Registration] A piezoelectric vibrating device comprising: a disc-shaped piezoelectric vibrator; a case supporting the piezoelectric vibrator inside; and a plurality of sound holes formed in the case. , a region formed by a length of 60% of the diametrical center of the vibration region of the piezoelectric vibrator is defined as a first region, and a region facing the case and overlapping with the first region is defined as a first region. 2, and all of the plurality of sound holes are formed outside the second region.