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JPH10170639

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DESCRIPTION JPH10170639
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
opening mechanism for an underwater exploration buoy, and more particularly to an opening
mechanism for opening a receiver unit for capturing underwater acoustic information in the
underwater exploration buoy.
[0002]
2. Description of the Related Art Conventionally, in the case of an underwater exploration buoy,
when the carrier is dropped from the carrier into the sea, the floating part floats up to the sea,
and the transmitter and receiver unit are suspended by the suspension cable from the floating
part. Structure. Usually, the transmitter and receiver units sink into the sea under their own
weight, and the sound receiver unit receives the reflected sound that the sound wave from the
transmitter is reflected by the target in the sea and captures the underwater acoustic
information. ing. The underwater exploration buoy that captures this underwater acoustic
information is also generally known by the name of Sonobuoy.
[0003]
Some of these underwater exploration buoys are configured to cope with an increase in detection
distance by disposing the receiver units three-dimensionally in the ocean. As a method of
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disposing the wave receiver units in a three-dimensional manner, there is a method in which an
arm member for holding the wave receiver unit is opened using power (a motor or the like).
[0004]
However, in the case of a method in which the arm member is powered and the umbrella is
deployed, the umbrella mechanism itself becomes complicated and large. In order to simplify this
opening mechanism, synthetic fiber cloth is used as a damper member of the arm member
holding each of the plurality of receiver units, and the plurality of receiver units are opened at
predetermined angular intervals by the damper members. There is also a way to arrange it. This
method is described in detail in JP-A-4-320986.
[0005]
SUMMARY OF THE INVENTION In the above-described opening mechanism of the conventional
receiver unit, the arm member and the storage case of the arm member are connected by the
hinge mechanism, and the arm member is a damper member (synthetic fiber cloth). Since the
housing case is opened at a predetermined angle, simplification of the mechanism itself and
reduction of the scale can be realized as compared with the case of using power.
[0006]
However, the storage case for the upper and lower dampers can not be less than the length of the
arm member, and a hinge mechanism for connecting the arm member and the storage case is
also required, so that the scale can be reduced. There is also a limit.
[0007]
Then, the object of the present invention is to solve the above-mentioned problems and to
provide an undersea exploration buoy umbrella mechanism which can further simplify the
mechanism itself and reduce the scale more than the conventional one.
[0008]
According to the present invention, there is provided an opening mechanism for an underwater
exploration buoy according to the present invention, which comprises a plurality of groups of
receivers which are released after being dropped from a carrier into the sea, and the reflected
sound to the sound waves from the transmitters. And a plurality of cable members for
suspending each of the plurality of receiver groups, and the cable member according to the
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weight of the transmitter. An upper receiver arm and a lower receiver arm are provided at
predetermined angular intervals set in advance with tension and support the plurality of receiver
groups at the predetermined angular intervals.
[0009]
That is, in the opening mechanism according to the present invention, each of the upper receiver
arm and the lower receiver arm for three-dimensionally holding each of the receiver units
consisting of a plurality of receivers is composed of a plurality of arm members, The arm
members are each deployed at predetermined angular intervals set in advance by the tension on
the cable member due to the weight of the transmitter.
[0010]
This eliminates the need for a mechanism that powers up the arm member with power and a
storage case and a hinge mechanism for opening the arm member with the damper member, thus
simplifying the umbrella mechanism itself and a receiver unit. When the wave transmitter and
the umbrella mechanism are housed, the scale can be reduced substantially to the length of the
arm member.
[0011]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present
invention will be described with reference to the drawings.
FIG. 1 is a perspective view of an opening mechanism according to an embodiment of the present
invention, and FIG. 2 is a view showing a state where the opening mechanism according to an
embodiment of the present invention is accommodated.
1 and 2 show the lower receiver arm 1 of the opening mechanism according to one embodiment
of the present invention, and the upper receiver arm (not shown) has the same structure as the
lower receiver arm 1. ing.
[0012]
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In these figures, the lower wave receiver arm 1 is composed of wave receiver arms 1a to 1d
rotatably supported by a rivet 4 and integrally supported, and string members 2a to 2f for
opening.
Here, the receiving arms 1b to 1d except for the receiving arm 1a located at the top are provided
with projections having insertion holes for inserting the strap members 2a to 2f for opening.
[0013]
The receiver arm 1a is fixed at its both ends to the corresponding receiver unit 5, that is, a cable
member 6 for holding a plurality of receivers connected in a row, and the back side of the fixed
surface of the cable member 6 is fixed. The strap members 2a and 2b for opening are attached to
the predetermined position of.
The strap members 2a and 2b for opening are connected at one point in front of the transmitter
3 through the insertion holes of the protrusions of the receiver arm 1b.
When the strap members 2a and 2b for opening pass through the insertion holes of the receiver
arm 1b, the receiver arms 1a and 1b form a predetermined angle with each other at the time of
opening.
[0014]
The cable receiver 6 for holding the wave receiver unit 5 corresponding to the both ends of the
wave receiver arm 1b is fixed, and the cord members 2c and 2d for opening the umbrella at a
predetermined position on the back side of the fixing surface Is attached.
The strap members 2c and 2d for opening are connected at one point in front of the transmitter
3 through the insertion holes of the protrusions of the receiver arm 1c. When the strap members
2c and 2d for opening pass through the insertion holes of the receiver arm 1c, the receiver arms
1b and 1c form a predetermined angle with each other at the time of opening.
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[0015]
The cable receiver 6 for holding the wave receiver unit 5 corresponding to the both ends of the
wave receiver arm 1c is fixed, and the cord members 2e and 2f for opening the umbrella at a
predetermined position on the back side of the fixing surface Is attached. The strap members 2e
and 2f for opening are connected at one point in front of the transmitter 3 through the insertion
holes of the protrusions of the receiver arm 1d. When the strap members 2e and 2f for opening
pass through the insertion holes of the receiver arm 1d, the receiver arms 1c and 1d form a
predetermined angle with each other at the time of opening.
[0016]
The cable receiver 6 for holding the corresponding receiver unit 5 is fixed to both ends of the
receiver arm 1d. Therefore, when the underwater exploration buoy is dropped into the sea and
the wave transmitter 3 sinks under its own weight and applies tension to the opening cord
members 2a to 2f, the wave receiver arms 1a to 1d open as described above. Since the
predetermined angles are made by the strap members 2 a to 2 f for umbrella at the time of
umbrella, the receiver units 5 are three-dimensionally arranged at predetermined angular
intervals via the cable members 6.
[0017]
FIG. 3 is a view showing a storage case according to an embodiment of the present invention. In
the figure, a storage case according to an embodiment of the present invention is comprised of
an exterior package 7 and an exterior package retainer 8, and in the exterior package 7, an upper
receiver arm and a lower receiver arm 1, and an opening umbrella The cord members 2a to 2f,
the transmitter 3, the receiver unit 5, the cable member 6, and the electronic circuit unit (not
shown) are accommodated.
[0018]
A spring member (not shown), a hinge mechanism (not shown) and the like are attached to the
exterior package 7 and the hinge mechanism is configured to make the door open by the
elasticity of the spring member. Therefore, after the above-described members are
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accommodated in the exterior package 7, the exterior package retainer 8 is covered to prevent
the exterior package 7 from opening.
[0019]
The length of the cable 9b connected to the outer package retainer 8 is shorter than the length of
the cable 9a connected to the outer package 7, and the underwater exploration buoy is dropped
into the sea and the outer package 7 starts to sink under its own weight When the cable 9b is
extended, the outer package retainer 8 is detached from the outer package 7, and the outer
package 7 is opened by the elasticity of the spring member and starts to sink away from the
storage.
[0020]
Thereafter, when the transmitter 3 sinks under its own weight and applies tension to the opening
cord members 2a to 2f, as described above, the receiver arms 1a to 1d open the opening cord
member 2a at the time of opening. The receiver units 5 are arranged three-dimensionally at
predetermined angular intervals via the cable members 6 at predetermined angles with each
other by 2f.
[0021]
FIGS. 4 (a) and 4 (b) and FIGS. 5 (a) and 5 (b) are views showing the opening operation of the
opening mechanism according to the embodiment of the present invention.
The operation of the embodiment of the present invention will be described with reference to
FIGS.
[0022]
The underwater search buoy according to an embodiment of the present invention comprises a
floating portion 10 and a submersible portion connected to the levitation portion 10 by a cable 9
and housed in the exterior package 7, and the submersible portion is an upper wave receiver.
From the arm 13 and the lower wave receiver arm 1, the opening cord members 2 and 11, the
wave transmitter 3, the wave receiver unit 5, the cable member 6, the electronic circuit portion
14 and the signal line 12 It is configured.
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[0023]
When the above-mentioned underwater exploration buoy is dropped from a carrier (not shown)
into the sea, the floating part 10 floats up to the sea, and the exterior package 7 is suspended
from the floating part 10 via the cable 9 [FIG. (A) Reference].
[0024]
When the exterior package 7 reaches a preset set depth, a tension acts on the cable 9b connected
to the exterior package retainer 8, the exterior package retainer 8 is detached from the exterior
package 7, and the exterior package 7 is opened by the elasticity of the spring member. It begins
to sink away from the stored goods [see Figure 4 (b)].
[0025]
When the exterior package 7 is removed, the wave receiver unit 5 is deployed by the umbrella
mechanism according to the embodiment of the present invention.
In that case, if the transmitter 3 sinks under its own weight and tension due to the transmitter's 3
weight is applied to the strap members 2 and 11 for umbrella that had been slack when stored
[see FIG. The receiver arms 13a to 13d and 1a to 1d (receiver arms 13a to 13d are not shown) of
the lower arm 13 and the lower receiver arm 1 are mutually set at predetermined angles by the
opening cord members 11, 2 Thus, the receiver units 5 are three-dimensionally disposed at
predetermined angular intervals via the cable member 6 [see FIG. 5 (b)].
[0026]
In the above description, the upper receiver arm 13 and the lower receiver arm 1 each have four
receiver arms 13a to 13d and 1a to 1d, but five receiver arms are used. It is also possible to
three-dimensionally arrange ten or more sets of the receiver units 5 at predetermined angular
intervals by using the above.
[0027]
As described above, the plurality of receiver units 5 that are released from the carrier into the sea
and opened and receive the reflected sound to the sound wave from the transmitter 3 are opened
by the sinking due to the weight of the transmitter 3. The tension applied to the umbrella cord
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members 2 and 11 and the cable member 6 causes the upper wave receiver arm 13 and the
lower wave receiver arm 1 to be opened at predetermined angular intervals to set each of the
plurality of wave receiver units 5 By supporting at a predetermined angular interval, the length
of the exterior package 7 for housing these members becomes almost the length of the upper
receiver arm 13 and the lower receiver arm 1, so that the mechanism itself can be further
simplified than before. And scale can be reduced.
In other words, in the case of using the conventional storage space, it is possible to deploy the
wave receiver unit 5 on a larger scale than the conventional case.
[0028]
As described above, according to the present invention, a plurality of receiver groups, which are
released after being dropped from the carrier into the sea, receive the reflected sound to the
sound waves from the transmitters. In the subseafloor buoy for capturing underwater acoustic
information, an upper receiver arm and a plurality of cable members for suspending each of the
plurality of receiver groups are tensioned by the weight of the transmitter, and the upper
receiver arm and In the prior art, the lower receiver arms are opened at predetermined angular
intervals, and the upper receiver arms and the lower receiver arms support the plurality of
receiver groups at predetermined angular intervals. Furthermore, the mechanism itself can be
simplified and reduced in size.
[0029]
Brief description of the drawings
[0030]
1 is a perspective view of an opening mechanism according to an embodiment of the present
invention.
[0031]
2 is a diagram showing a state in which the opening mechanism according to an embodiment of
the present invention is stored.
[0032]
3 is a view showing a storage case according to an embodiment of the present invention.
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[0033]
FIGS. 4 (a) and 4 (b) are diagrams showing an opening operation of the opening mechanism
according to the embodiment of the present invention.
[0034]
FIGS. 5 (a) and 5 (b) are diagrams showing the opening operation of the opening mechanism
according to the embodiment of the present invention.
[0035]
Explanation of sign
[0036]
REFERENCE SIGNS LIST 1 lower receiver arm 1 a to 1 d receiver arm 2, 2 a to 2 f, 11 string
member for opening 3 transmitter 4 rivet 5 receiver unit 6 cable member 7 exterior package 8
exterior package retainer 9 cable 10 floating Part 14 Electronic circuit part
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