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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional flood
detection structure (large flood detection type flood detection structure), and FIG. 2 is a cross
sectional view of a small flood detection type flood detection structure of the present invention. 1
иииии Watertight body, 2 иииии Electronic circuit part, 3 иии и и и Water immersion detector, 4 ииииии Vibrator
room, 5 иии и и и и и и и и и и и и и и и и и и Spacer, 6 и и и и и и и и и и и и и и и и и и и и и и и и и floodway (groove), 8 и и и и и и и
front cover.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an immersion
detection structure for a transducer that is used as an electroacoustic transducer for underwater
communication. Conventionally, the immersion detection structure of this type of transducer is a
so-called large-quantity immersion detection type in which the immersion detector 3 is provided
in the electron path portion 2 in the watertight body 1 as shown in FIG. It was a structure. In the
figure, 4 denotes a transducer chamber, 515 denotes a spacer, 6 denotes water (or sea water),
and 8 denotes a front cover serving as a transmission / reception surface of sound waves. In the
case of this large amount of water immersion sensing type detection structure, which has
conventionally been large 1-, i, 2) P7 rho, the majority of the transducer chamber 4 and the
electronic circuit 2 are flooded into the transducer when there is water immersion. There has
been a drawback that it is impossible to detect inundation unless a large amount of water (some
b is seawater) is inundated. 5 In the present invention, if there is a flood in the transducer, in the
lower part of the spacer and the watertight body so that the flood detection is possible even if the
small amount of water (or seawater) is flooded, a flood passage (groove) And a small amount
flood detection type flood detection structure provided with a flood detector. 10 Next, an
embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a
cross-sectional view of the small amount water immersion detection type water immersion
detection structure of the present invention, in which a water immersion passage (groove) 7 and
a water immersion detector 3 are provided 15 under the spacer 5 and the watertight body 1. In
addition, it is possible to obtain an inundation detection structure capable of detecting inundation
with a small amount of inundation when there is inundation. That is, although the water
immersion to the inside of the wave transmission and reception winding is through the contact
portion between the watertight body 1 and the other portion (front cover 8 etc.), the immersion
202 to water passing through the contact portion with the front cover b A groove is provided
under the spacer 5 to guide water to the detector 3. Also, even if there is flooding from other
parts, the water will accumulate in the lower part, so the detector 3 immediately detects flooding.
As described above, according to the present invention, in the conventional large amount of flood
detection type flood detection structure, a large amount of water (or sea water) is generated
when most of the transducer chamber and the electronic circuit section are immersed when there
is flood. Damage to the transducer room and the electronic circuit part was large because
inundation detection would be possible if it did not infiltrate, but a spacer and a structure for
providing an inundation passage (groove) and an inundation detector in the lower part of the
watertight body As a result, since it is possible to detect water immersion before water is
immersed in the vibrator chamber and the electronic circuit portion, it is possible to prevent
damage to the vibrator chamber and the electronic circuit portion in advance.
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