Piezo-electric acoustic generator
A sounder and piezoelectric technology, which is applied in the direction of piezoelectric/electrostrictive transducers, sensors, electrical components, etc., can solve the problems of difficult terminal part bending and low yield, and achieve good yield and low yield. Height, effect of increasing installability
Active Publication Date: 2010-07-14
TDK CORPARATION
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Problems solved by technology
Therefore, it is possible to reduce the height by bending the piezoelectric sounder at the terminal portion, but when a plate-shaped terminal is used, it is difficult to bend the terminal portion, which becomes an obstacle to the reduction in height.
[0008] In addition, since the terminal is manufactured by stamping the sheet material in a mold, there will be a surplus on the sheet material, resulting in a problem of low yield.
Method used
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Embodiment Construction
[0027] Next, refer to the piezoelectric sounder of the embodiment of the present invention Figure 1 to Figure 6 Be explained. figure 1 The piezoelectric sounder 1 shown in is used in electronic high-frequency heaters to emit buzzing sounds, and is mainly composed of a housing 2 made of resin material, a metal plate vibration plate 3, and a piezoelectric element 4 that drives the vibration plate 3 , an electrode 5 serving as a power supply point of the piezoelectric element 4, and a first terminal 6 and a second terminal 7 of the metal wire.
[0028] The housing 2 has a size of about 20 mm in the length direction, about 15 mm in the width direction, and about 7 to 8 mm in the thickness direction, such as figure 2 As shown, on one end side in the longitudinal direction, there is provided a recessed portion forming portion 2A that forms a substantially circular recessed portion. A step portion 2C is provided at a predetermined position in the recess forming portion 2A, and th...
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The invention provides a piezo-electric sounder whose packaging performance is excellent and the yield is also good. One end of a 1st terminal 6 consisting of a metal wire material is electrically connected to a diaphragm 3. The middle part of the 1st terminal 6 is fixed to a case 2 by a middle fixing part 8B, and the part toward the tip from this fixed part of the 1st terminal 6 is extended toward the outside of the case 2 in parallel to the longitudinal direction of the case 2. Outside the case 2, the 1st terminal 6 is bent into almost a U-like shape to form an inflection 6A, and the part toward the tip from this inflection 6A is extended into the inside of the case 2 almost in parallel to the longitudinal direction of the case 2. Then, the tip part of the 1st terminal 6 is fixed to thecase 2 in the state of being bent in the width direction of the case 2 by the tip fixing part 8A. The 2nd terminal 7 is formed similarly, and the parts of the 1st terminal 6 and the 2nd terminal 7 extended outside the case 2 are to be fixed in packaging.
Description
technical field [0001] The invention relates to a piezoelectric sounder. Background technique [0002] In so-called home appliances such as electronic high-frequency heaters, sounds such as buzzers are used as notification means in order to notify users of their operating states. And, as a device for emitting such a sound, a piezoelectric device using a piezoelectric element and a vibrating plate as shown in Patent Document 1, for example, has been developed. [0003] Sounder etc. [0004] Patent Document 1: Japanese Unexamined Patent Publication No. 8-154297 [0005] When a conventional piezoelectric sounder is mounted, for example, on a circuit board inside a main body of an electronic high-frequency heater, the terminal portion of the piezoelectric sounder is fixed to the circuit board by soldering or the like. In addition, since the piezoelectric sounder mounted in this way is self-supporting by the terminals, the terminals are formed by stamping a sheet material with...
Claims
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IPC IPC(8): H04R17/00H04R1/02
Inventor 木岛薰
Owner TDK CORPARATION