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DESCRIPTION JPS57173490

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DESCRIPTION JPS57173490
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side sectional view of a
conventional underwater transducer, and FIG. 2 is a schematic side sectional view showing an
embodiment of the underwater transducer according to the present invention. 1 и и и и и и и и и и и и и и и
и и и и и и support structure, 3 и и и и и и и и и и и и и и и insulating oil, 5 и и и и и и и и и и и 6 иииии Foam, 7 иии и и и и и и и и и
и и и и и и и и и и и и и и и vibration isolation plate.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an underwater
transducer having a vibrator in a case. FIG. 1 shows an example of a conventional underwater
transducer. The submersible transducer shown in the figure is attached to the support structure
2 fixed to the cover plate by the holding plate 7 with the vibrator 3 fixed. ?░░ ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? (1 The support structure 2 is fixed to the lid plate 1 by screwing or
the like, and the vibrator 3 is fixed to the support structure-via a vibration isolation plate. . By the
way, in the above-mentioned conventional structure, there is a defect that the natural vibration of
the cover plate /, the support structure 2, the holding plate 7 and the like enters the vibrator 3
through the vibration isolation plate and the characteristics of the underwater transducer
deteriorate significantly. . In particular, at deep depths, the anti-vibration effect of the antivibration plate significantly decreases with depth and becomes unusable. So far, no measures
have been taken against the above drawbacks. The present invention eliminates the abovementioned drawbacks and provides an excellent measurement of the underwater transducer.]
"░" "<54 Or, and hereinafter, an embodiment of the underwater transducer according to the
present invention will be described with reference to the drawings. . In FIG. 2, the submersible
transducer is filled with (2) 527 rubber or any other material with a shock absorbing rubber or
other plastic material such as plastic foam in the inside of the case 5 made of rubber or other
material. The vibrator 3 is embedded in the shell, and the shell itself is used as a support
structure, and the shell is impregnated with the insulating oil l as an insulating liquid. It is a good
acoustic medium. According to the configuration of the above embodiment, the vibrator 3 floats
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in the heat sink and the insulating oil t, and does not directly contact other solids, so the
vibration deteriorates the characteristics as the underwater transducer. The structure is
simplified without being affected by In addition, since the foam body such as rubber foam, plastic
foam plastic and the like has a buffer property against the impact atmosphere, it has an effect of
protecting the vibrator 3 against shock. Further, by impregnating the foam container with the
insulating oil q, it acts as a good acoustic medium, so that sufficient sensitivity] (3) 15; 8 can be
obtained. As described above, according to the present invention, it is possible to obtain a good
underwater acoustic wave measurement, and to obtain an underwater transmitter-receiver
equipped with shock resistance S.
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