JP2539578Y2 - Transducer storage sealed enclosure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed housing for a transmitter / receiver, and more particularly to a sealed housing for a transmitter / receiver capable of adjusting the internal pressure of a filler filled in a flexible sealed housing. .

[0002]

2. Description of the Related Art FIG. 4 is a partially cutaway perspective view showing a conventional sealed housing for a transducer. In the figure, reference numeral 1 denotes a transducer having pressure resistance, reference numeral 2 denotes a flexible hermetically sealed housing that accommodates the transducer 1, reference numeral 3 denotes a filler such as insulating oil filled in the enclosed casing 2, 4A and 4B are used for injecting and pouring out the filler 3 and the detailed structure thereof is shown in FIG. 5. The plug for sealing a filler is shown in FIG. 5, 5 is a watertight connector, 6 is a power supply and a signal for the transducer 1. This is a cable for transmitting data.

[0005] In FIG. 5, reference numeral 7 denotes a plug body, and 8 denotes an O-ring for maintaining airtightness.

[0004] When the transceiver 3 is filled with the filler 3, for example, one of the sealing plugs 4 A for sealing the filler is used.
A filling material injection device (not shown) is attached to the mounting opening of (a), the filler is injected, and the air in the housing is discharged from the mounting opening of the other plug 4B for sealing the filling material. Finally, by attaching the two plugs 4A and 4B for sealing the filler while overflowing the filler 3, air is prevented from remaining inside the closed casing 2. The sealed housing for the transmitter / receiver having such a structure is usually stored in the air, and is suspended in water during operation, and is system-stayed and towed.

[0005]

However, in the apparatus having the above-described structure, the filler 3 leaks out of the closed casing 2 as time passes, so that the volume of the filler inside the closed casing 2 is reduced.
Internal pressure drops. Also, by being suspended from the air into the water during operation (reversely, from the water to the air),
A temperature difference occurs in the closed casing 2, and the internal pressure of the closed casing 2 changes due to a difference in thermal expansion coefficient between the closed casing 2 and the filler 3.

A change in the internal pressure of the closed casing 2 due to the temperature change is caused by expansion or contraction of the closed casing 2 due to a temperature difference between a high temperature summer and a low temperature winter, a warm region and a cold region, and mooring and towing. The water flow at the time is disturbed, becomes a noise source, and the performance of the transducer 1 is reduced. Further, when the closed casing 2 repeatedly expands and contracts, the closed casing 2 is permanently deformed due to a creep phenomenon. Therefore,
Remove the filling plugs 4A and 4B and inject the filling 3
It is necessary to adjust the internal pressure of the filler 3 by pouring it out. At this time, however, air entrapment occurs and the performance of the transducer 1 cannot be satisfied. In addition, this internal pressure adjustment work is very difficult work, and there is a problem that workability is very poor.

As described above, this invention eliminates the problems of air entrapment at the time of adjusting the internal pressure of the filler and poor workability at the time of adjusting the internal pressure. It is an object of the present invention to provide an excellent sealed housing for a transmitter / receiver, which is used as a stopper and can easily adjust the internal pressure at an appropriate time.

[0008]

According to the present invention, in addition to a plug for sealing a filler material, a through hole is provided in a flexible hermetically sealed housing containing a transducer so as to maintain airtightness by elasticity. A pressure regulating plug having a resilient member is provided.

[0009]

According to the present invention, the injection needle is inserted into the through hole formed in the elastic member of the filler pressure regulating plug, and the filler can be injected through the injection needle. In addition, the internal pressure of the filler can be adjusted.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. In the figure, reference numeral 9 denotes a filling pressure regulating plug whose detailed structure is shown in FIG.

In the plug 9 for regulating the pressure of the filler shown in FIG. 2, reference numeral 10 denotes an O-ring for maintaining the watertightness of the filler 3;
As shown in FIG. 3, the detailed structure of the pressure regulating plug body comprises a filler pressure regulating plug body 12 and a rubber mold 13 attached to the tip of the filler pressure regulating plug body 12 by vulcanization and baking.
Reference numeral 14 denotes an O-ring for backing up the airtightness of the rubber mold 13 of the filler pressure regulating plug 9, and reference numeral 15 denotes the O-ring 14.
It is an inner plug for storing and fixing the.

The rubber mold 13 has a through hole 16 at its center as shown in FIG.
The airtightness is maintained by the elasticity of the rubber mold.

When the internal pressure of the filler 3 needs to be adjusted in the sealed housing of the transmitter / receiver having such a configuration, the inner plug 15 and the O-ring 14 are removed from the plug 9 for adjusting the filler. Then, an injection needle connected to a pressure regulator (not shown) is inserted into a through hole 16 previously formed in the rubber mold, and the filler 3 is injected to adjust the amount of the filler 3 in the closed casing 2. . Then, after removing the injection needle (not shown) from the rubber mold 13, the O-ring 14 is attached, and the inner plug 1 is removed.
5 is attached. Thereby, the hermetic enclosure 2 can be kept completely airtight by the elasticity of the rubber mold portion and the O-ring 14. In this way, the internal pressure of the filler 3 can be easily adjusted at an appropriate time.

In the above description, the rubber mold is used for the pressure regulating plug. However, the present invention is not limited to this, and it goes without saying that an elastic member having the same performance may be used.

[0016]

As described in detail above, according to the present invention, it is possible to easily adjust the pressure of the internal filler of the flexible closed casing. In addition, since the internal pressure of the filler can be adjusted at an appropriate time, the effect of maintaining the performance of the transducer 1 can be expected.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the filling pressure regulating plug shown in FIG.

FIG. 3 is a cross-sectional view of the pressure regulating plug shown in FIG. 2;

FIG. 4 is a partially broken perspective view showing a conventional configuration example.

FIG. 5 is an exploded perspective view of the plug for sealing a filler shown in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transceiver 2 Sealing enclosure 3 Filler 4A, 4B Sealing plug 5 Watertight connector 6 Cable 7 Plug body 8 O-ring 9 Filler pressure regulating plug 10 O-ring 11 Pressure regulating plug section 12 Filler pressure regulating plug Body 13 Rubber mold 14 O-ring 15 Inner plug

Claims (1)

(57) [Scope of request for utility model registration] 1. A transmitter / receiver having a pressure resistance, a flexible sealed housing accommodating the transmitter / receiver, a filler such as insulating oil filled in the sealed housing, and the filler A transmitter / receiver hermetically sealed housing composed of a filler sealing plug used for injection and pouring, and a transmitter / receiver comprising a filler pressure regulating plug provided with a through hole which is kept airtight by elasticity. Storage sealed enclosure.