JP2002240776A - Reflector buoy for radar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reflector buoy for a radar with good containability allowing replacing of a reflector and mounting and folding of reflectors with various effective reflecting areas. SOLUTION: This buoy comprises a flexible float 1 formed of a flat face 2 and a standingly mounting part 3 approximately transverse to the face 2, and the flexible reflector 6 formed of a hollow standingly mounting part 7 and an electric wave reflecting plane 8 mounted on the mounting part 7. The mounting part 7 is engaged with the mounting part 3 and the reflector 6 is detachably fixed on the float 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflector buoy for radar, and more particularly, it is used for a target or a rescue buoy at sea or the like. In particular, when used as a target, the effective reflection area can be changed. It relates to a reflector buoy for radar.

[0002]

FIG. 8 is a perspective view showing an example of a conventional reflector buoy. As shown in the figure, the reflector buoy has a horizontal surface and an upright surface, each surface of which is constituted by a flexible radio wave reflecting film 21.
Thus, four sets of corner reflectors 22 are configured. Each of the radio wave reflecting films 21 has an independent air chamber 23, and the gas chamber 23 is inflated by introducing a gas into the air chamber 23. The inflatable buoy is formed by the plurality of expanded tubular bladders. It is configured to support a reflector buoy.

[0003]

According to the reflector buoy constructed as described above, the effective reflection area of the reflector is constant, and when a reflector having a different effective reflection area is required, all the reflectors are manufactured each time. There was a problem that had to be done. Further, depending on the use condition, when the reflection surface is deteriorated and the required reflection intensity cannot be obtained, there is another problem that the reflection surface is integrated with the buoyant body, so that it cannot be reused.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a reflector buoy with good storability, in which the reflector can be replaced, the reflector having various effective reflection areas can be mounted or folded, and the buoyability is high. The purpose is to provide. It is another object of the present invention to provide a radar reflector buoy capable of setting a plurality of effective reflection areas with a single radar reflector buoy and capable of changing the effective reflection area.

[0005]

A radar buoy according to the present invention is constructed as follows. (1) A flexible float including a flat portion and a standing portion substantially perpendicular to the flat portion, and a flexible reflector including a hollow standing portion and a radio wave reflecting surface attached to the hollow standing portion. Then, the hollow standing portion of the reflector was fitted to the standing portion of the float, and the reflector was detachably fixed to the float.

(2) The radar buoy for radar of (1) above, further comprising a confidential float in which the plane portion and the standing portion are integrated to form an air chamber. The hollow standing part of the reflector is fitted to the standing part of the float, and the reflector is detachably fixed to the float.

(3) The reflector buoy for radar of the above (1) is provided with a float having a standing portion made of a member which has elasticity and shrinkage and is self-supporting when there is no load. The hollow standing portion of the reflector is fitted to the standing portion of the float, and the reflector and the float are detachably fixed.

(4) The radar buoy according to (1), (2), or (3), further comprising a reflector having a radio wave reflecting surface made of a material that can be stretched in the vertical and horizontal directions.
We make radio wave reflection surface of effective reflection area from elastic material,
In this state, the hollow standing portion of the reflector is fitted to the standing portion of the float, and the reflector and the float are detachably fixed.

(5) In the reflector buoy for radar of (1), (2), (3) or (4), the floating ring-shaped flat portion and the standing portion are substantially perpendicular to the flat portion and are erected from substantially the center of the flat portion. Float consisting of a cylindrical or conical upright portion, a cylindrical or conical hollow upright portion, and a triangular shape having an open angle of 90 ° which are alternately orthogonal to each other. A reflector consisting of a radio wave reflecting surface constituting a set of corner reflectors, the hollow standing portion of the reflector is fitted to the standing portion of the float, and each corner of the reflector bottom surface and the flat portion of the float, and the reflector. The vicinity of the tip of each standing part of the float was detachably fixed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a perspective view of a float which is a main part of FIG. 1, and FIG. It is a perspective view of the reflector which forms an important part. In FIGS. 1 and 2, reference numeral 1 denotes a float made of a flexible and airtight material such as vinyl, for example, and a horizontal portion has a floating ring-shaped horizontal air chamber 2 and a vertical portion orthogonal to the horizontal portion. It comprises a cylindrical (or conical) standing air chamber 3, and the two air chambers 2, 3 penetrate at the bottom of the horizontal portion to form an integrated air chamber. The horizontal air chamber 2 in the shape of a floating ring is provided with four horizontal mounting holes 4 at 90 ° distribution, and is also provided above the cylindrical vertical air chamber 3 at the same position as the horizontal mounting holes 4. An erect mounting hole 5 is provided.

In FIGS. 1 and 3, reference numeral 6 denotes a reflector made of a radio wave reflecting material having flexibility, and is constituted by four sets of corner reflectors 6a. That is, each of the corner reflectors 6a is composed of one horizontal plane and two standing planes which are alternately orthogonal to each other and centered on a hollow (or conical) hollow standing part 7 having a hollow inside. The radio wave reflecting surfaces 8 are formed in a triangular shape, and each radio wave reflecting surface 8 is formed to have an open angle of 90 °, and these are integrated by means of sewing or the like. Horizontal mounting cords 9 are provided at the four corners of the horizontal plane of the reflector 6, and a vertical mounting cord 10 is also provided above the hollow standing portion 7.

The float 1 and the reflector 6 are
The hollow standing portion 7 of the reflector 6 is connected to the standing air chamber 3 of the float 1.
To form a radar reflector buoy. At this time, the horizontal attachment string 9 of the reflector 6
The vertical mounting string 10 is fixed to the horizontal mounting hole 4 and the vertical mounting hole 5 of the float 1. In addition, the horizontal plane center part 11 of the reflector 6 is fitted and fixed to the lower part 12 of the horizontal air chamber of the float 1.

The operation of the first embodiment configured as described above will be described. First, the case where a radar reflector buoy is formed will be described. The hollow standing portion 7 of the reflector 6 is inserted from above into the standing air chamber 3 of the float 1, the reflector 6 is placed over the float 1, and the horizontal fixing cord 9 and the standing mounting of the reflectors 6 provided at a 90 ° pitch to each other. String 1
0 is the horizontal mounting hole 4 and the vertical mounting hole 5 of the float 1.
And tied together. The center part 11 of the horizontal plane of the reflector 6 is fitted and fixed to the lower part 12 of the horizontal air chamber 2 of the float 1.

When the float 1 is filled with gas and the float 1 is inflated, the float 1 has a floating ring-shaped horizontal air chamber 2 which expands in the horizontal direction, and a cylindrical (or conical) standing air chamber 3 has a vertical shape. Expand in the direction. For this reason, the reflector 6 fixed to each of the mounting holes 4 and 5 of the float 1 becomes four sets of corner reflectors 6 having a predetermined shape due to the expansion of the float 1.
Expand to a. Since float 1 contains gas,
The buoyancy sufficient to float on the sea surface etc. is obtained. When the gas in the float 1 is removed, the float 1 contracts and the float 1
Further, since the reflector 6 is a flexible material and can be folded and stored, the storage performance is improved. Since the float 1 and the reflector 6 are united by being tied, they are separated by tying. For example, when replacing the reflector 6 due to deterioration of the reflector 6 or changing the effective reflection area, the float 1 is left as it is, the string is unraveled, only the reflector 6 is changed, and the string is fixed. In this case, since the reflector 6 is fixed with a string or the like, even if the size of the reflector 6 is changed, the reflector 6 can be adjusted by a binding method.

As described above, according to the present embodiment, the reflector 6 can be replaced, the reflectors 6 having various effective reflection areas can be attached, and the reflector 6 can be folded and has good storability. Obtainable.

[Second Embodiment] FIG. 4A is a perspective view of a float showing a main part of a second embodiment of the present invention. The other configuration is the same as that described in the first embodiment, and a description thereof will not be repeated. In the second embodiment, instead of the cylindrical (or conical) standing air chamber 3 of the float 1 shown in the first embodiment, a self-supporting column 13 is provided as shown in FIG. It is fixed to the annular horizontal air chamber 2. The self-supporting column 13 is made of a member that is excellent in elasticity and storage, such as a spring or a leaf spring, and is self-supporting when there is no load. The self-supporting column 13 made of this member is
And the lower end and the upper end of the self-supporting column 13 are fixed to the lower end and the upper end of the cylindrical (or conical) hollow standing portion 7 of the reflector 6 with a string or the like.

In the present embodiment configured as described above, in the stored state, as shown in FIG. 4B, a folding load is applied so as to wrap the self-supporting column 13 of the float 1. When the float 1 is inflated, the load applied to the float 1 on the self-supporting column 13 is removed, and the self-supporting column 13 becomes self-supporting as shown in FIG. Thus, similarly to the first embodiment, the four sets of corner reflectors 6a can be deployed by the expansion of the float 1 and the self-supporting support columns 13. Other operations are the same as those described in the first embodiment, and a description thereof will not be repeated.

As is apparent from the above description, according to the present embodiment, the reflector 6 can be replaced, the reflector 6 having various effective reflection areas can be attached, and the reflector 6 can be folded, and the elasticity and the storage property can be improved. And a reflector buoy having a self-supporting column 13 made of a self-supporting member when no load is applied.

Third Embodiment FIG. 5 is a perspective view of a third embodiment of the present invention. In the present embodiment, the effective reflection area can be changed according to the purpose of use of the radar reflector (for example, when used as a target). The radio wave reflection surface 8 of the reflector 6 shown in the first embodiment Has a flexibility such as a rubber plate coated with aluminum or a rubber plate mixed with aluminum powder,
It is made of a radio wave reflecting material made of a stretchable material. Then, the reflector 6 is produced in the natural state of the material in accordance with the minimum value of the desired effective reflection area, and the float 1 is made to have a size capable of mounting the reflector 6 having the maximum value of the desired effective reflection area. The air chamber 3 is produced and provided with, for example, three stages of upper, middle, and lower mounting holes 5. The material is expanded and contracted by pulling the attachment cords 9 and 10 provided on the reflector 6, and this is adjusted, so that the radio wave reflecting surface 8 made of mutually orthogonal triangles of an appropriate size within a desired effective reflection area.
Is formed.

In the present embodiment constructed as described above, the horizontal mounting string 9 and the vertical mounting string 10 provided on the reflector 6 are adjusted in tension so that a radio wave formed by a mutually orthogonal triangle having a desired effective reflection area. A reflecting surface 8 is formed, and in this state, the horizontal mounting string 9 and the vertical mounting string 10 of the reflector 6 are fastened to the horizontal mounting hole 4 and the vertical mounting hole 5 provided in the float 1.

FIGS. 6 and 7 show how the effective reflection area of the reflector is changed. FIG. 6 shows a reflector 6 having a radio wave reflection surface 8 having a smaller effective reflection area than that shown in FIG. 5, and FIG. 7 shows a reflector 6 having a radio wave reflection surface 8 having a larger effective reflection area than that shown in FIG. Is shown. In FIG. 6 having the radio wave reflecting surface 8 having a small effective reflection area, the positions where the attachment strings 9 and 10 are fixed to the attachment holes 4 and 5 are shown in FIG.
In FIG. 7 having the radio wave reflecting surface 8 which is more inward (downward) and has a large effective reflection area, the positions where the attachment strings 9 and 10 are fixed to the attachment holes 4 and 5 are located outward (upward and upward) in FIG. )It is in. Other operations are the same as those described in the first embodiment, and a description thereof will not be repeated.

As is clear from the above description, according to the present embodiment, a plurality of effective reflection areas can be set by contracting the material with one radar reflector buoy, and the effective reflection area of the reflector 6 can be reduced. Since it can be changed and can be further folded, a radar reflector buoy with good storability can be obtained.

[0023]

(1) As is apparent from the above description, the present invention provides a flexible float including a flat portion and a standing portion substantially perpendicular to the flat portion, a hollow standing portion and a hollow standing portion. A flexible reflector consisting of a radio wave reflection surface attached to the installation part is provided. The reflectors having various effective reflection areas can be mounted and folded, and a radar reflector buoy with good storability can be obtained. Further, a plurality of effective reflection areas can be set with one radar reflector buoy, and a radar reflector buoy capable of changing the effective reflection area can be obtained.

(2) In the radar buoy for radar of the above (1), since the plane part and the standing part are provided with a confidential float that forms an air chamber integrally, the reflector can be replaced. The reflector having an effective reflection area can be attached, can be folded, and a radar reflector buoy with good storability can be obtained.

(3) The reflector buoy for radar of the above (1) is provided with a float having an upright portion made of a member which has elasticity and shrinkage and is self-supporting when there is no load, so that the reflector can be replaced. Reflectors with various effective reflection areas can be attached, foldable, stretchable,
A reflector buoy having excellent storability and having a support made of a self-supporting member when there is no load can be obtained.

(4) In the radar buoy described in (1), (2), and (3), a reflector having a radio wave reflecting surface made of a material that can be stretched in the vertical and horizontal directions is provided, so that one radar reflector is provided. By contracting the material with the buoy, multiple effective reflection areas can be set, the effective reflection area of the reflector can be changed, folding can be performed,
A radar buoy with good storability can be obtained.

(5) In the radar buoy for radar of (1), (2), (3) or (4), the floating ring-shaped plane portion and the standing portion are substantially perpendicular to the plane portion and erected from substantially the center of the plane portion. Float consisting of a cylindrical or conical upright portion, a cylindrical or conical hollow upright portion, and a triangular shape having an open angle of 90 ° which are alternately orthogonal to each other. A reflector consisting of a radio wave reflecting surface constituting a set of corner reflectors, the hollow standing portion of the reflector is fitted to the standing portion of the float, and each corner of the reflector bottom surface and the flat portion of the float, and the reflector. Since the vicinity of the tip of each standing part of the float is detachably fixed, the reflector can be replaced, the reflector with various effective reflection areas can be mounted and folded, and the reflector buoy for radar has good elasticity and storage. Get Can. Also, a plurality of effective reflection areas can be set with one radar reflector buoy, and a radar reflector buoy capable of changing the effective reflection area can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of Embodiment 1 of the present invention.

FIG. 2 is a perspective view of the float of FIG.

FIG. 3 is a perspective view of the reflector of FIG. 1;

FIG. 4 is a perspective view showing a main part of a second embodiment of the present invention.

FIG. 5 is a perspective view of a third embodiment of the present invention.

FIG. 6 is an operation explanatory view of FIG. 5;

FIG. 7 is another operation explanatory view of FIG. 5;

FIG. 8 is a perspective view showing an example of a conventional reflector buoy.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Float 2 Horizontal air chamber 3 Standing air chamber 6 Reflector 6a Corner reflector 7 Hollow standing part 8 Radio wave reflecting surface 13 Self-supporting support

Continued on the front page (72) Inventor Yasunori Nakata 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (72) Inventor Nobuo Asano 1210 Anharacho, Shimizu-shi, Shizuoka Prefecture

Claims (5)

[Claims] 1. A flexible float comprising a flat portion and an upright portion substantially perpendicular to the flat portion, and a flexible reflector comprising a hollow upright portion and a radio wave reflecting surface attached to the hollow upright portion. A reflector buoy for radar, wherein a hollow standing portion of the reflector is fitted to a standing portion of the float, and the reflector is detachably fixed to the float. 2. The radar buoy according to claim 1, further comprising an airtight float in which the flat portion and the standing portion are integrated to form an air chamber. 3. The radar buoy according to claim 1, further comprising a float having a standing portion made of a member which has elasticity and shrinkage and is self-standing when no load is applied. 4. The reflector buoy according to claim 1, further comprising a reflector having a radio wave reflecting surface made of a material that can expand and contract in the vertical and horizontal directions. 5. A float comprising a floating ring-shaped flat portion, a cylindrical or conical standing portion substantially perpendicular to the flat portion and standing from substantially the center of the flat portion, and a cylindrical or conical hollow portion. Standing portions and alternately orthogonally form a triangular shape with an opening angle of 90 °.
A reflector comprising a radio wave reflecting surface constituting a set of corner reflectors, wherein a hollow standing portion of the reflector is fitted to a standing portion of the float, and each corner of the reflector bottom surface and a flat portion of the float, The reflector buoy according to any one of claims 1, 2, 3, and 4, wherein the vicinity of the tip of each of the standing portions of the reflector and the float is detachably fixed.