JPH0445356Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a piezoelectric vibrator using a large number of piezoelectric elements, which is used in fish finders and depth sounders.

[Conventional technology]

Conventionally, piezoelectric vibrators 6 used in this type of equipment include a plurality of rectangular piezoelectric elements 1 each having an electrode lead 4 in rows and columns with spacers 3 in between, as shown in FIGS. 4 to 6. Arranged in 5
It is soldered with.

At that time, the lead wire was passed through the spacer which was vertically divided into two parts.

[Problem that the invention attempts to solve]

In the above-mentioned prior art, in order to arrange each piezoelectric element, a method was used in which a spacer was vertically divided into two to provide a space for the lead wire to pass through, and then fixed with an adhesive. However, if the lead wire is passed through using the space of the spacer, there is a problem in that the assembly accuracy is poor, resulting in variations in accuracy.

The purpose of the present invention is to improve the above-mentioned assembly accuracy and suppress variations in electrical accuracy.

[Means for solving problems]

In the piezoelectric vibrator of the present invention, lead wires for electrodes are passed through V-grooves provided on the side surfaces of each piezoelectric element.

[Effect]

Each piezoelectric element is adhesively fixed via a spacer, and then a lead wire is passed through a hole formed by a groove on the side surface of the piezoelectric element.

〔Example〕

FIG. 1 shows individual piezoelectric elements of the present invention, where 1 is the piezoelectric element, 2 is an electrode, and 7 is a groove provided on the side surface. In Fig. 2, there are three piezoelectric elements 1 and a spacer 8.
The figure shows the state assembled in tandem through the . The adhesive is preferably chloroprene-based. FIG. 3 shows the lead wire 4 passed through the vibrator completed as shown in FIG. 2, and the electrode 2
5 shows the state with soldering 5 applied. A plurality of pieces arranged in vertical columns as shown in FIG. 3 are arranged in horizontal rows on the same plane and glued together, and finally an arrangement similar to that shown in FIG. 6 is obtained.

〔effect〕

The above configuration improves assembly accuracy, reduces the variation in resonance frequency of the obtained piezoelectric vibrator to about half that of a piezoelectric vibrator constructed using a conventional method, and reduces the variation in resonance impedance. has also decreased significantly.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention. Figure 1 is an overhead view of a piezoelectric element, Figure 2 is an overhead view of piezoelectric elements bonded vertically via spacers, and Figure 3 is a groove in which lead wires are connected. 4 to 6, which are overhead views showing a state in which soldering is performed through the wire, show conventional examples. Figure 4 shows the divided spacer being glued to the side surface of the piezoelectric element, Figure 5 shows the individual piezoelectric elements with lead wires inserted into the spacer space, and Figure 6 FIG. 2 is an overhead view showing a completed piezoelectric vibrator. In the figure, 1...piezoelectric element, 2...electrode, 4...lead wire, 7...groove, 8...spacer.

Claims (1)

[Scope of utility model registration request] In a piezoelectric vibrator in which a plurality of cube-shaped piezoelectric elements having lead wires arranged on electrodes are arranged in rows and columns with spacers interposed therebetween, each of the lead wires is arranged through a groove provided on a side surface of the piezoelectric element. A piezoelectric vibrator.