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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
transducer, and FIGS. 2 and 3 are side views of the conventional transducer attached to a support
bar. FIG. 4 is a cross-sectional view of an embodiment of a transducer provided with a recess 9
according to the present invention, FIG. 5 and FIG. 6 are a cross-sectional view of the recess 9
and FIG. Fig. 8 is a side view with a protective fitting attached using the recessed part, Fig. 9 is a
side view with a recessed part 9 'provided at the lower part of the transmitter / receiver. is there.
In the figure, 1 ..... cable, 2 ..... piezoelectric. 3 ...... spacer 4 ...... cores, 5,5 ...... molding material, 7
...... supporting rod, 8 ...... laces, 9 , 9 '........... 12 ... weight.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of an underwater transmission / reception wave (i) (hereinafter referred to as a transmission /
reception wave) for use in an underwater sound box device of Nahsa Temple, the object of which
is to have a concave portion By measuring the integral molding, there is a point where it is made
the structure which greatly improves the stock 15 holding function. Conventionally, as shown in
the cross-sectional view of FIG. 1, the structure of this transducer is based on a cable 1, a
piezoelectric 2 and a S 1-E 1-pacer 3, x, 4 with a tapered portion 5 and a cylindrical portion. It
has a structure covered with an integral mold material which is more than six. Therefore, when
holding the transducer vertically or horizontally in water, as shown in the side views of FIG. 2
and FIG. 5 and FIG. It was fixed by string etc. However, in such a method, the force received by
the transducer by the fluid and the force due to the weight of the transducer are concentrated 10
in the vicinity of the junction between the cable 1 and the taber 5, so that the junction is broken.
There is a possibility that water may infiltrate into the inside, the joint is flexible and it is
disastrously unstable, and it takes a lot of time and labor for mounting and dismounting, and
various workability such as fear etc. It had a drawback. The present invention is to eliminate
these drawbacks, and the following describes the embodiment and the use example whose
structure etc. are shown in FIG. 4 to FIG. In FIG. 4, the same reference numeral as that of the
conventional one indicates the one of 1 dj-. Reference numeral 9 denotes a recessed portion
having a holding function according to the present invention, which is provided on the outer side
of l · · 4 made of a gold rod or a hard plastic or the like. Fig. 5 and Fig. 6 show an example of the
wedge surface of the concave portion, Fig. 5 shows the case where it is provided in an annular
shape, and Fig. 6 shows the case where it is provided in parallel. Show. FIG. 7 shows an example
in the case of holding a transmitter-receiver using such a recessed part, 7 shows a support rod
and 10 shows a fitting. The inside of this recessed part is rigid, so the transducer can be held
firmly, and because it is concave, there is no fear of coming off from @ 10-. It is easy and there is
no fear of breakage since the force is not concentrated at the junction of the cable 1 and the
tapered portion 5. FIGS. 8 and 9 show a 91 tl view of an application in which such a recess is
used 15. Fig. 8 shows an example in which the protective cover 11 is attached to the transmitter
/ receiver, and Fig. 9 is provided with a recess of 9 ° at the lower part of the transmitter /
receiver, and the transmitter / receiver is stabilized in water. This is an example in which a
weight 12 is attached.
As described above, by measuring an integral mold having a recessed portion applied to the
transducer, it is possible to significantly improve its attachment and holding ability extremely
easily in manufacturing, and as its application, protection Metal fittings, weights, etc. can also be
attached firmly. 5