JPH1118188

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 JPH1118188
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
watertight container, and more particularly to a watertight container of an underwater acoustic
device such as a side scan sonar.
[0002]
2. Description of the Related Art Heretofore, in this type of underwater acoustic device, as shown
in FIG. 3, the underwater acoustic device body 12 is connected to the exploration vessel 10 by a
cable 11 and towed in the sea by the cable 11 ing.
[0003]
The underwater acoustic device main unit 12 emits ultrasonic waves (sound pulses) to the ocean
and the sea floor, creates a map of the sea floor by the time difference of reflection from the sea
floor, etc., and detects air bubbles leaking from gas pipes laid on the sea floor It is used for the
inspection of the gas pipe etc. by this, and the target 14 of revision is searched.
[0004]
The watertight container 13 is a sealed container that accommodates therein a watertight device
(not shown) used as an underwater acoustic device mounted on the underwater acoustic device
main body 12 and shields the watertight device etc. from the outside (seawater) is there.
04-05-2019
1
[0005]
As this watertight container 13, as shown in FIG. 4, the O-ring 24 is fitted in the groove provided
on the outer periphery of the convex portion of the flange (lid) 22, and the flange 22 is fitted to
the opening of the housing (container) 23. By fixing to the housing 23 with the bolt 21 in a state
where it is made to be closed, the opening of the housing 23 is closed to seal the internal space.
[0006]
Further, as the watertight container 13, as shown in FIG. 5, the rubber ring 26 is placed on the
step provided in the housing 27, and the convex portion of the flange 25 is fitted to the opening
of the housing 27 There is also a structure in which the flange 25 is fixed to the housing 23 by
the bolt 21 in a state where the portion 26 is pressed onto the step, and the opening of the
housing 23 is closed to seal the internal space.
[0007]
Furthermore, as the watertight container 13, as shown in FIG. 6A and FIG. 7, in the above
structure, the portion in contact with the O-ring 24 and the step portion on which the rubber
ring 26 is mounted are protruded from the inner wall There is also a structure using the
housings 28 and 30.
[0008]
On the other hand, as a sealed container, an insulating base portion in which a step is formed in
the upper part of an inner wall in a package for housing an electronic component, a metal lid
fitted in the step, and a sealing glass material for bonding and fixing the lid. There is also a
structure consisting of
About this structure, it is disclosed by Unexamined-Japanese-Patent No. 6-37197.
[0009]
In the above structure, in order to complete the hermetic sealing of the container consisting of
the insulating base portion and the lid, the lid is adhesively fixed to the step formed on the inner
wall of the insulating base portion with the sealing glass material. By doing this, the inside of the
container is made a sealed space.
04-05-2019
2
[0010]
In the above-described conventional watertight container, in the case of a structure in which the
housing is sealed with an O-ring attached to the flange, when using a standard O-ring, a groove
conforming to the size of the O-ring in the flange The dimensions are required, and the groove
size limit increases in the watertight structure design.
Using a custom-made O-ring as this O-ring is expensive in price and is unsuitable for a small
amount of products.
In addition, the finishing process of the O-ring groove needs to be accurate, which causes an
increase in the cost of parts.
[0011]
Furthermore, in the case of a structure in which the rubber ring placed on the step of the housing
is pressed by the flange, the inner diameter of the housing needs the same dimension as the
inner diameter φD1 of the rubber ring in order to crush the rubber ring. The inner diameter of
the becomes smaller.
[0012]
Furthermore, in the case of a structure in which a portion of the housing in which the O-ring
abuts or a stepped portion on which the rubber ring is mounted is protruded from the inner wall,
the inner diameter of the internal space of the housing can be expanded.
However, in this case, the inner diameter portion of the watertight seal portion of the housing
becomes smaller, and as shown in FIG. 6B, in order to store the electronic device unit 29 having
the same size as the inner diameter φD2 of the internal space in the housing 28. Also, the
electronic device unit 29 can not be accommodated in the housing 28 because the electronic
device unit 29 is jammed at the watertight seal portion.
[0013]
On the other hand, in the case of a structure in which the airtight sealing of the container
04-05-2019
3
comprising the insulating base portion and the lid is completely completed by bonding and fixing
the lid to the step formed on the inner wall of the insulating base portion with the sealing glass
material. In addition, since the insulating base portion and the lid are adhered and fixed by the
sealing glass material, it takes a long bonding time and it becomes difficult to remove the lid.
[0014]
Therefore, an object of the present invention is to provide a watertight container capable of
solving the above-mentioned problems, widening the inner diameter of the housing, eliminating
the limitation in watertight structure design, and reducing the cost of parts. It is in.
[0015]
The watertight container according to the present invention is provided in the vicinity of the
opening of the container member, a container member in which the storage space is disposed by
opening the top and sealing the bottom. And a rubber frame having a width substantially the
same as the width of the frame member, and a frame member having a width that is greater than
the width of the step, and a step formed by projecting the space on the opening side toward the
outer periphery of the container member. And a cover member for holding the convex portion
having substantially the same diameter as the inner diameter of the frame member and stacked
on the step and the rubber frame to the step side.
[0016]
Another watertight container according to the present invention is a cylindrical container
member having a storage space provided therein by being opened at the top and sealed at the
bottom, and provided in the vicinity of the opening of the container member and having the
opening A step in which a space on the part side protrudes to the outer peripheral side of the
container member, a ring plate having a width larger than the width of the step, a rubber ring
having substantially the same width as the width of the ring plate, The ring plate having a convex
portion having substantially the same diameter as the inner diameter of the plate and the ring
plate stacked on the step and a flange member for holding the rubber ring to the step side are
provided.
[0017]
That is, the watertight container of the present invention uses a rubber ring for the watertight
seal portion, and by using the small step and the ring plate, enables the expansion of the inner
diameter of the watertight container and makes the watertight structure design independent of
the O ring specification. And eliminate the need for severe processing accuracy such as grooved
O-rings.
04-05-2019
4
[0018]
That is, in the watertight container of the present invention, the inner diameter of the housing is
determined by fixing the flange (lid) with a bolt in consideration of assemblability and
maintainability and inserting the ring plate between the rubber ring and the step of the housing.
The problem of the prior art is solved by making it possible to widen the structure, and by
adopting a structure that is not bound by the O-ring standard or dimensional accuracy.
[0019]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention
will be described with reference to the drawings.
FIG. 1 (a) is an assembly view of a watertight container according to an embodiment of the
present invention, and FIG. 1 (b) is a cross-sectional view after assembly of the watertight
container according to an embodiment of the present invention.
In these figures, the watertight container according to one embodiment of the present invention
comprises a bolt 1, a flange (lid) 2, a rubber ring 3, a ring plate 4, and a cylindrical housing
(container) 5. .
Here, the width of each of the rubber ring 3 and the ring plate 4 is approximately the same
diameter, and the diameter of the convex portion of the flange 2 and the inner diameter of each
of the rubber ring 3 and the ring plate 4 are approximately the same diameter.
[0020]
That is, in the watertight seal structure according to one embodiment of the present invention,
the step on the opening of the internal space 5a of the conventional housing 5 is made to project
outside the internal space 5a from the space on the opening of the housing 5 The width of the
step to be formed is reduced, and the ring plate 4 is inserted between the step and the rubber
ring 3.
[0021]
04-05-2019
5
In this watertight seal structure, first, the ring plate 4 is placed on the step in the upper portion
of the housing 5, and the ring plate 4 is supported around the step in the upper portion of the
housing 5.
Next, the rubber ring 3 is placed on the ring plate 4, the flange 2 is placed on the rubber ring 3,
and the flange 2 is fixed to the housing 5 with the bolt 1.
[0022]
Then, the convex portion of the flange 2 enters the inside of the rubber ring 3 and the ring plate
4, and the flange 2 presses the rubber ring 3 to the ring plate 4 side.
Although the rubber ring 3 pushes the ring plate 4 to the housing 5 side, since the ring plate 4 is
supported by the steps of the housing 5, it does not fall below that position.
[0023]
Therefore, the rubber ring 3 spreads in the outer direction and the inner diameter direction and
is in close contact with the inner surface of the housing 5 and the outer surface of the convex
portion of the flange 2 to maintain the water tightness.
[0024]
As described above, even if the width of the step of the conventional housing 5 is reduced, the
ring plate 4 can be pressed without changing the crushing area of the rubber ring 3.
That is, it becomes a structure which can enlarge dimension (phi) D which is an internal diameter
of the housing 5. FIG.
In the case actually performed, the result is obtained that the dimension d can be increased by
about 3 mm.
04-05-2019
6
[0025]
FIG. 2 (a) is an assembly view of a watertight container according to another embodiment of the
present invention, and FIG. 2 (b) is a cross-sectional view of the watertight container according to
another embodiment of the present invention after assembly.
In these figures, the watertight container according to another embodiment of the present
invention has the same configuration as that of an embodiment of the present invention except
that a watertight connector 6 capable of electrical connection is attached to the flange 2, and the
same configuration Elements are given the same reference numerals.
[0026]
Since the watertight seal structure of the watertight container according to the other
embodiment of the present invention is the same as that of the above-described embodiment of
the present invention, the description thereof will be omitted.
By attaching the watertight connector 6 to the flange 2, the above-described watertight seal
structure can be used as a watertight container of the underwater acoustic device.
[0027]
Although both the watertight container according to the embodiment of the present invention
and the watertight container according to the other embodiment of the present invention are
cylindrical, they can be applied to a prismatic shape for watertightness, etc. It is not limited.
[0028]
Thus, the inner diameter of the housing 5 is expanded by reducing the step of the conventional
housing 5 and inserting the ring plate 4 having the same width as the width of the rubber ring 3
between the step and the rubber ring 3. It is possible to provide a watertight container with good
mounting efficiency.
04-05-2019
7
[0029]
In addition, since the rubber ring 3 is used for the watertight seal structure, it is not necessary to
use the O-ring, so that the design can be made without being restricted by the specification of the
O-ring.
Furthermore, since there is no need to use an O-ring, severe processing accuracy in O-ring
groove processing etc. is not necessary, so that parts cost can be reduced.
[0030]
As described above, according to the present invention, the container member is provided with
the storage space inside by being opened at the top and sealed at the bottom, and provided in the
vicinity of the opening of the container member. In addition, a step formed by the space on the
opening side protruding toward the outer periphery of the container member, a frame member
having a width larger than the width of the step, a rubber frame having substantially the same
width as the width of the frame member, and The inner diameter of the housing can be expanded
by providing a frame member having a convex portion having substantially the same diameter as
the inner diameter and being provided with a frame member stacked on the step and a cover
member for pressing the rubber frame to the step side. There is an effect that the restriction in
design can be eliminated and the cost of parts can be reduced.
[0031]
Brief description of the drawings
[0032]
Fig.1 (a) is an assembly drawing of the watertight container by one Example of this invention, (b)
is sectional drawing after the assembly of the watertight container by one Example of this
invention.
[0033]
FIG. 2 (a) is an assembly view of a watertight container according to another embodiment of the
present invention, and FIG. 2 (b) is a cross-sectional view of the watertight container according to
another embodiment of the present invention after assembly.
04-05-2019
8
[0034]
3 is a diagram showing an outline of a configuration example of the side scan sonar.
[0035]
4 is a cross-sectional view of an example of the watertight container according to the
conventional example.
[0036]
5 is a cross-sectional view of another example of the watertight container according to the
conventional example.
[0037]
FIG. 6 (a) is a cross-sectional view of another example of the watertight container according to
the conventional example, and FIG. 6 (b) is a view showing storage of the electronic device unit in
another example of the watertight container according to the conventional example.
[0038]
7 is a cross-sectional view of still another example of the watertight container according to the
conventional example.
[0039]
Explanation of sign
[0040]
1 bolt 2 flange 3 rubber ring 4 ring plate 5 housing 5a internal space 6 watertight connector
04-05-2019
9