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JPS5643992

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DESCRIPTION JPS5643992
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a conventional
watertight mold type transducer, and FIG. 2 is a longitudinal sectional view of the watertight
mold type transducer of the present invention. 1 и и и и и и и и watertight portion, 2 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 и и и и и и mold portion, 4 и и и и и и и и и и и и и и и и и и и и и и и и cable ииииииии Cable holding bracket, 7
иииииииии Relay terminal, 8 иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Attached Bonding portion
between the metal fitting 2 and the mold portion 3, 11... Bonding portion between the flange 4
and the mold portion 3, 12.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a watertight mold
type transducer which is equipped with a bottom KM as an electroacoustic transducer for
underwater communication. Conventionally, a transducer 1 of this type has a flange 1 joined to
the mounting bracket 2 and the watertight portion 1 as shown in the cross-sectional view of FIG.
4 had a direct contact structure. Thus, the watertight portion 1 is a connecting space portion
between the cable 5 and the vibrator 8 and is 1- / 3. The vibrator 8 is fixed to the 7 runge 4 by
the vibrator tightening port 9) and is attached to the outside by the mounting bracket 2. 0 in FIG.
3 is a molded portion of rubber, plastic or the like, 6 cable holding bracket , 7 is a relay terminal,
8 is a vibrator for converting electric energy (acoustic energy) into acoustic energy (electric
energy), 10 is a bonding portion between the mounting bracket 2 and the mold portion 3, 11 is 7
range 4 and the mold portion 3 Indicates the bond with Therefore, in the conventional
transmitter-receiver, the bonding portion (adhesion portion) 10 between the mounting bracket 2
and the mold portion 3 has a contraction force as the mold material changes with time, various
external forces applied to the mold portion 3, and the mounting bracket 2 The adhesion portion
4 between the mounting bracket 2 and the mold portion 3 gradually peels off due to crevice
corrosion of the mold, deterioration of the molding material, etc., and water intrudes into the
inside and reaches up to 7 rungs 4. Furthermore, in the bonding portion 11 between the 7 lunge
4 and the mold portion 3 as well, the bonding portion 11 peels off due to the same cause as the
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bonding portion 10, and as a result, there is a risk that the watertight portion 1 may be flooded
in a relatively short time was there. 2-The purpose of the present invention is to provide a
watertight mold type transducer which eliminates the above-mentioned drawbacks and maintains
watertightness for a long time. The watertight mold type transducer according to the present
invention is characterized mainly in that the flange and the fitting are molded with a mold
material interposed. Next, an embodiment of the present invention will be described with
reference to the drawings. FIG. 2 is a cross-sectional view of the water-mould-molded transducer
according to the present invention, in which a molding material such as rubber or plastic is
interposed to eliminate direct contact between the mounting bracket 2 and the flange 4 joined to
the watertight portion 1. I am doing it. Therefore, even if the bonding portion 10 between the
mounting bracket 2 and the mold portion 3 is peeled off and the water is flooded to the inside of
the mounting bracket 2, since the mold material intervenes between the mounting bracket 2 and
the flange 4, It becomes a watertight mold type transducer which can be used for a long time
without using it. The crucible 12 provided on the mounting bracket 2 is for preventing
detachment of the mounting bracket-award, * 4 negative of the mounting bracket 2 is made of
corrosion resistant metal 1 such as bronze, etc. Thus, crevice corrosion can be prevented, and
inundation of water can be prevented for a long time.
As described above, according to the present invention, since the mounting bracket and the
flange connected to the watertight portion are fixed via the molding material 5, there is an effect
of preventing water immersion in the watertight portion for a long time.
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