JPS63120600A - Piezoelectric sound emitter - Google Patents

Abstract

PURPOSE:To eliminate the use of an adhesive and a soldering process and to improve the productivity by separating a case into a front half and a rear half, sandwiching a piezoelectric buzzer element between them, fixing a terminal on the case, and bringing the other end of the terminal into contact with the buzzer element to connect the case and the element. CONSTITUTION:The terminal 14 made of an elastic electric conducting plate has a glossa 16 to be fitted in a through hole 15 provided in the case rear half part 10, and the glossa 16 is deformed toward the part 10 to be fixed by its own elasticity. The other end of the terminal 14 is electrically connected with the electrode of the piezoelectric buzzer element 11 by its own contacting the electrode. The element 11 is sandwiched and held at its node part by protruding parts 17, 18 provided on the case front half part 9 and the case rear half part 10. Accordingly, the holding of the element 11 can be achieved without using an adhesive, also, since soldering is not necessary to connect the element 11 with the electrode, the constitution is simplified and the productivity can be improved.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention has a structure in which a piezoelectric buzzer element made of a thin metal plate and a thin piezoelectric ceramic plate is housed and held in a case, and is used to generate operation confirmation sounds for various home appliances. It relates to piezoelectric sounding bodies used in

Prior Art In a conventional piezoelectric sounding body, a piezoelectric buzzer element 3, which is made by bonding a thin piezoelectric ceramic plate 2 to a thin metal plate 1 using an adhesive, is bonded and held to a case 4 using an adhesive 5, as shown in Fig. 3. The lead wires 6 were soldered 7 to the electrodes of the piezoelectric buzzer element 3, respectively, and connected to terminals 8 fixed to the case, thereby completing connection to the outside.

Problems to be Solved by the Invention In such a conventional configuration, it is necessary to bond and hold the piezoelectric buzzer element 3 to the case 4 with adhesive, and it is also necessary to solder the terminal 8 and the electrode using the lead wire 6. The structure is complicated, there are many assembly steps, and since adhesive is used, it takes time for it to harden.

The present invention solves these problems and aims to provide a highly productive piezoelectric sounding body that has a simple structure, uses no adhesive, and does not require a soldering process.

Means for Solving the Problem In order to solve this problem, the present invention divides the case into a front piece and a rear piece, sandwiching a piezoelectric buzzer element between them, fixing the terminal to the case, and fixing the other end of the terminal to the case. It is connected in contact with the piezoelectric buzzer element.

Function: With this configuration, the piezoelectric buzzer element can be supported without adhesive by sandwiching the piezoelectric buzzer element between the front and rear pieces of the case. By connecting them, there is no need for soldering using lead wires or the like.

Embodiment FIG. 1 is a sectional view showing a piezoelectric sounding body according to an embodiment of the present invention. In FIG.
11 is a thin metal plate 12 and a thin piezoelectric ceramic plate 13.
14 is a terminal made of an elastic conductive plate, and the rear piece 10 of the case is
It has a section 16 that fits into a through hole 15 provided in the case rear section 10, and is configured to be deformed into the case rear section 10 and fixed by its elasticity. The other end is connected to the electrode of the piezoelectric buzzer element 11.

This piezoelectric buzzer element 11 is held at its joints by convex portions 17 and 18 provided on the front piece 9 and the rear piece 10 of the case.

In addition, in FIG. 2, the front piece 9 of the case and the rear piece 10 of the case are held by four key-shaped feet 19 provided on the scrap part of the case so as to hug the rear piece 1o of the case. Terminal 14 can support and hold the node of the piezoelectric buzzer element.
Can be connected by contact.

Effects of the Invention As described above, according to the present invention, the piezoelectric buzzer element can be held and supported without the use of adhesive, and the connection with the electrodes of the piezoelectric buzzer element does not require soldering. For,
The effect of providing a highly productive piezoelectric sounding body with a simple configuration can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a piezoelectric sounding element according to an embodiment of the present invention, FIG. 2(a) is a front view of FIG. 1, FIG. 2(1) is a perspective view of the front piece, and FIG. The figure is a sectional view showing a conventional piezoelectric sounding element. 9...Front piece, 10...Back piece, 11
... Piezoelectric buzzer element, 12 ... Metal plate, 13 ... Piezoelectric ceramic plate, 14 ... Terminal, 15 ... Through hole, 16... section, 17.
18...convex part, 19...leg. Sea-Kankoto IO-Ichi no Miyato/7--Manden bubu search f2-Ichikei f3--Karan Rangai (Change Iro-Kuno/7.t 8-Convex part f Fig. 2 Cα)

Claims (1)

[Claims] A piezoelectric sounding body in which a front piece and a rear piece of a case support a vibration node of a piezoelectric buzzer element, and a terminal that contacts an electrode of the piezoelectric buzzer element is supported by the case.