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JPS5076854

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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
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DESCRIPTION JPS5076854
[Detailed description of the invention] In recent years, various ultrasonic wave transmission
pingers have been widely used for underwater position measurement, fish school tracking,
underwater temperature distribution measurement, etc. It is a point which has been difficult with
the design of the waterproof structure conventionally. The present proposal simultaneously
solves the reduction in size and weight including the waterproof structure by a simple
configuration, and will be described in detail below with reference to the drawings. FIG. 1
roughly shows the configuration of the embodiment of the present invention, and in FIG. 1 aVC 1
has mechanical flexibility and extensibility, and the medium has ultrasonic characteristics in the
external use cage. A thin-walled cover made of an approximate organic material and having a
neutral cylindrical shape and a hollow hemispherical end, FIG. 1 shows a cylindrical cylinder
whose both ends are hemispherical covered by the cover [11-1 In the external view of the Binger
body 2 of the shape, the external appearance is a transducer having a function of transmitting or
receiving ultrasonic waves with the front lid 2-1 and the radiation surface 2-2-1 exposed to the
outer surface. A watertight structure of special waterproof rounding is eliminated by being
constituted by a cylinder barrel 2-6 incorporating a circuit 2-2, a circuit, a power source and the
like, and a back lid 2-4. The mutual dimensions of the cover 1 and the cover 1 and the main body
2 of the cover are such that the whole cover of the main body 2 can be reliably enclosed in the
cover 1. 2 shows a state in which the pincher main body 2 shown in FIG. 1 is inserted and sealed
in the cover 1 shown in FIG. The external medium 4 from the outer surface of the cover 1
intrudes into the cover 1 and the inside medium of the cover 1 does not leak to the outside of the
cover 1 so as to ensure watertight sealing. FIG. 3 shows an embodiment in which the back cover
2-4 of the pinger 1 main body 2 in FIG. 1 is partially modified and the sealing method is changed.
The end portion 1'-1 of the cover 11 is covered with the groove 2'-4-1 by providing a -4-1 and
covering with the cover 11 from the vibrator 2.degree. 2'ky, 2.degree., And 'the yarn 3 is tightly
sealed together with the back lid 21-4 so as to keep the vibrator 21-2 watertight. The operation
and effect of the above configuration will be described with reference to the drawings. In FIG. 2,
in the atmosphere, when the pincher body 2 is inserted and sealed in the cover 1 without
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considering the internal medium 5 in particular, the internal medium 5 sealed in the cover 1 (in
this case, the compressible fluid The pressure of air) is approximately equal to the atmospheric
pressure. In this case 11, when the fluid pressure applied to the pincher 2 through the cover 1 of
the external medium 4 is equal to the atmospheric pressure through the cover 1 of the external
medium 4 when this is introduced under the use return boundary, as shown in Since the internal
medium 5 having ultrasonic characteristics different from the cover 1 and the external medium 4
is present between the radiation surface 2-2-1 of 2-2 and the inner surface of the cover 1, the
ultrasonic waves of the transducer 2-2 are present The fluid pressure of the external medium 4
compresses the internal medium 5 via the cover 1 when the fluid pressure of the external
medium 4 increases, so the inner surface of the cover 1 It comes in close contact with the
radiation surface of the transducer 2-2, and the ultrasonic wave transmission / reception
function of the transducer 2-2 is exhibited (3) 1, i 1-: '.
Therefore, in the above case, without selecting the internal medium 5 and avoiding the
troublesomeness of considering the fluid pressure of the external medium 4 and always want to
satisfy the function of the vibrator 2-2, The inner diameter of the portion of the inner surface of
the cover 1 that can be in contact with the radiation surface 2-2-1 of the transducer 2-2 at the
time of sealing is smaller than the outer diameter of the radiation surface 2-2-1 of the transducer
2-2 If the Binger body 2 is inserted in such a manner as to extend the cover 1 side, the radiation
surface 2-2- 2 unless the fluid pressure of the external medium 4 is lower than the sealing
pressure of the internal medium. 1 is in close contact with the inner surface of the cover 1 and
the function of the vibrator 2-2 is always satisfied regardless of the internal medium 5. The
pressure of the internal medium 5 may be increased or decreased, or the ultrasonic
characteristics of the internal medium 5 may be made similar to those of the cover 1 and the
external medium 4, or may be used in combination. The efficiency of the function also makes it
possible to know changes in the fluid pressure of the external medium 4. 3 is the same method as
FIG. 2, but after the tightening of the cover 1 ° and the end portion 11-1 takes place (4) Since
the tightening diameter is large according to 1, tightening by the yarn 6 is not easy, and
improvement in water tightness can be expected. Similarly, the diameter of the rear lid 2 + -4 is
equal to or larger than the inner diameter of the cylinder of the cover 11 to provide a binding
groove for water tightness such as the groove 2′-4-1. It is possible to make it easy to tie up the
watertight bundling operation at the end 1 ° -1. In addition, it is also possible to use a clamp or
the like for tightening in the case of the large-sized or expensive bottler as the water tight
bonding yarn 6 described in the embodiments. As shown in the figures and as indicated in the
text, the present invention uses a simple part such as the cover 1 and the cover 11 and wraps the
binger bodies 2 and 2 'which are conventionally difficult to remove and which do not have a
watertight structure. By adopting such a simple manufacturing method, productivity can be
improved without losing its function, and it is extremely industrially effective.
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