close

Вход

Забыли?

вход по аккаунту

?

JPH0511690

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH0511690
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
ultrasonic transducer for use in a fish finder or the like.
[0002]
2. Description of the Related Art In this type of ultrasonic transducer, as shown in FIG. 2, it is
projected from the bottom of the ship into water through the main shaft 2 at the time of use, and
ultrasonic waves are emitted around to detect a fish school etc. Is going. In that case, in order to
remove unnecessary downward ultrasonic sub-beams, as shown in FIG. 3, a sound insulating
material 5 such as a sponge is bonded to the outside of the bottom of the transducer dome 4
incorporating the ultrasonic transducer 3 or It was fixed by means such as bolting. That is, by
utilizing the property that this kind of sound insulating material 5 does not pass ultrasonic
waves, the downward sub-beam is prevented from being launched into the water.
[0003]
The reason that such a sound insulating member 5 is not provided inside the transducer dome 4
is that fixing it on the outside can suppress the sub beam more effectively.
[0004]
However, when the sound insulating material is provided on the outside of the dome in this way,
04-05-2019
1
the seawater is in direct contact with the sound insulating material during navigation, so that the
sound insulating material peels off or deteriorates. was there.
[0005]
SUMMARY OF THE INVENTION In order to solve these drawbacks, the present invention thinly
covers the surface of the sound insulating material provided on the outside of the transducer
dome with the same material as the dome, and the sound insulating material surface Is not
exposed.
[0006]
Since the sound insulating material is close to the outer side of the bottom surface of the
transducer dome, the suppression of the lower sub beam is large, and no peeling or deterioration
occurs when not in contact with the seawater.
[0007]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a cross sectional view
showing an embodiment of the present invention. The same parts as FIG.
[0008]
A sound insulating material 5 is provided on the outer side of the bottom surface of the
transducer dome 4, and a thin film coating 6 is formed by the dome material so as to cover it.
[0009]
In order to make such a structure, after the sound insulation material 5 is applied to the bottom
surface of the already-made transmitter / receiver dome 4 using an adhesive, only the bottom
surface portion is a dome such as urethane rubber using a mold. Material is cast on the surface
of the sound insulation material 5 to form the thin film coating 6 integrally with the transducer
dome 4
[0010]
As another manufacturing method, when the transducer dome 4 is formed, the sound insulating
material 5 is inserted into the outer portion of the bottom, and the simultaneous formation is
performed so that the sound insulating material 5 is not exposed.
04-05-2019
2
[0011]
Thus, the entire surface of the sound insulation material can be covered with the dome material,
and the structure can be made in close proximity to the outer surface of the bottom of the
transducer dome 4.
This is a structure suitable for the suppression of lower sub-beams as mentioned earlier.
[0012]
As described above, according to the ultrasonic transducer dome of the present invention,
unnecessary lower sub-beams can be effectively suppressed and deterioration of the sound
insulating material due to seawater can be prevented.
04-05-2019
3
Документ
Категория
Без категории
Просмотров
0
Размер файла
9 Кб
Теги
jph0511690
1/--страниц
Пожаловаться на содержимое документа