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JPS5611585

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS5611585
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a conventional
resin mold type underwater ultrasonic wave transceiver, and FIG. 2 is a longitudinal sectional
view of a resin mold type underwater ultrasonic wave transceiver according to the present
invention. The parts to be used are indicated by the same reference numerals. 1a: Piezoelectric
element, 1b: Vibration absorbing material, 1C: Insulated electric wire, 1 small: Insulating sheath,
ld ': Transmission / reception unit, 1d ′ ′: Protective cylindrical portion, 1e: · · Airtight sealing
material.
DETAILED DESCRIPTION OF THE INVENTION The present invention is a super oil mold type
underwater ultrasonic wave transmitter / receiver used for echo sounding or fish searching. A
conventional resin mold type underwater ultrasonic wave transmitting and receiving apparatus,
as shown in FIG. 1, has electrodes 1a1.1a # such as bustling on its own surface, etc. It is a
polarized titanium cage 1-11sS "′ ′ Ruconic acid ship And a vibration-absorbing material lb
such as sponge resin or cork disposed on the outer surface of the piezoelectric element 1a
excluding the sound wave transmitting / receiving surface (electrode surface 1a '), and the
electrode surface 1a of the piezoelectric element '. Conductor IC 'connected to 1v, IC'! A large
diameter transmission / reception disturbance 1d in which the insulated electric wire IC, which is
covered and drawn outward, is covered with the piezoelectric element 1a and the vibration
absorbing material 1b and is in contact with the electrode 1an of the sound wave transmitting /
receiving surface of the piezoelectric element easily at the inner bottom Insulating sheath 1c1
which is formed integrally with starvation of a synthetic resin, which is composed of '' and a
small protective cylinder part 1d 'covering the base of the insulated wire. Since this is to be
sealed, this is attached to the holding 1fA) l protruding from the hull and exposed to water, and
the wave receiving part ld 'of the combined insulation outer ratio receives the large water
pressure to receive the above-mentioned holding Only by bending with the fixing portion with
the material H as a fulcrum (the vibration from the hull is applied, the airtightness between the
04-05-2019
1
inner diameter surface of the cylinder ttd 'and the outer diameter surface of the insulated wire IC
is damaged) As a result, due to long-term use, seawater intrudes from between the protective
cylindrical portion 1d 'and the insulated wire IC, and the defect of lowering the insulation of the
piezoelectric element 1a by 2- can not be pursued. The present invention has been made to solve
the above-mentioned drawbacks, and the embodiment of FIG. 2 will be described. In the figure,
1a is a piezoelectric element, 1b is a vibration absorption-1 IC is an insulated wire connected to
the electrode surface 1 ml of the piezoelectric element by a lead 1cl or lcl, and la #, ld is a
transmission / reception). よヵ、677.。、。 The insulating outer sheath sealing the
piezoelectric element 1a, the vibration & absorption material 1b, and the insulated wire 1C is
shown by the casting mold, and the configuration is the same as that of FIG. A hermetic sealing
material 1e made of an elastic tMfi material such as polypropylene resin is sealed on the inner
diameter surface of the outer sleeve & 111 & 1d 'and the outer diameter surface of the insulated
wire 1c. Thus, the hermetic sealing material 1e is sealed in advance when the insulating outer
jacket 1C is cast after being tightly fitted in advance with or without using an adhesive on the
outer diameter surface of the insulated wire IC. In addition, as shown in the figure, the end of the
protective tube tld 'for sealing the insulated wire IC is preferable in view of the mechanical
strength of the protective tube portion, but it is not limited to this portion. It may be enclosed.
As described above, since the resin mold type underwater study sound wave transmitting and
receiving device according to the present invention is inserted into the airtight sealing material
having elasticity between the inner diameter surface of the protective cylindrical portion of the
outer insulation and the outer diameter surface of the insulated wire. Even if the connection
between the protective cylinder and the insulated wire is damaged by long-term use, the
airtightness of the meat is reliably maintained, and the infiltration of seawater or warm air
reduces the insulation of the piezoelectric element. There is an effect to be taken.
04-05-2019
2
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