JPH021937Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is used to improve the ability to reflect radar radio waves when the target detected by radar is a reflector that cannot reflect radar radio waves sufficiently. This relates to a corner-type reflector.

[Conventional technology]

As this type of reflector, a thin plate of good electrical conductor is formed into a concave triangular pyramid reflector, and a plurality of these are integrated into one by changing the direction.
46925, JP-A No. 54-40064, etc., it is well known.

In the former method, a plurality of corner reflectors each having a concave triangular pyramid shape are made in advance, and the outer surfaces of each reflector, that is, the convex surfaces, are stacked back to back and assembled to form a single unit. In the latter case, multiple plates that form each reflective surface are hinged at important points, assembled in a series, and then folded on-site to ensure that the concave triangular pyramid-shaped reflector is oriented in different directions. They are formed so that they are changed and lined up.

[The problem that the idea aims to solve]

Of the conventional types mentioned above, the former type is heavier due to the overlapping convex sides, requires assembly processing costs at the time of manufacturing, and also has limits on how small it can be when transported. There are disadvantages such as high costs. On the other hand, the latter type is convenient because it can be unfolded during transportation, but during manufacturing, in addition to the assembly configuration using hinges, the plate that forms part of the reflective surface is assembled midway through other reflective surface plates. There is a disadvantage that it cannot be provided at low cost due to its configuration.

There is a need for something that eliminates these inconveniences, is easy to transport, and is inexpensive.

[Means to solve the problem]

The present invention consists of two M-shaped parts arranged in an M-shape in which the vertices of three right-angled isosceles triangles coincide and are continuous and have a right-angled isosceles triangle notch on one side of the square. The two continuous M-shaped parts are facing in opposite directions and the sides corresponding to the vertical direction of the M-shape are facing each other, and the lower side of one double M-shaped part corresponds to the horizontal direction of the M-shape. The upper side corresponding to the horizontal direction of the M-shape of another double-M-shaped part is placed in opposition to the side of the other double-M-shaped part, so that a plurality of double-M-shaped parts are successively connected. A band-like continuous body of a concave triangular pyramidal reflector formed by bending the seam holes of the opposing parts of each right-angled isosceles triangle provided in a member made of a thin electrically conductive thin plate having a large number of consecutive right-angled isosceles triangles is closed in an annular shape. By providing a corner-type radar reflector having a shape, the above-mentioned problem can be solved.

〔Example〕

Examples will be described below with reference to figures.

FIG. 1 shows one embodiment thereof. This example shows eight consecutive concave reflective shapes, where 1 is the reflective surface and is an isosceles right triangle, and the apex 2 is made to match, and 3 triangles are gathered together, and the boundaries are multiple. It is arranged by the stitch hole 3 of. Further, at the boundary between the adjacent triangle group, a plurality of other stitch holes 4 are arranged one after another in a zigzag shape. 3,
The stitching holes 4 are a means for easily folding the paper along this row when making it three-dimensional, and the shape can be round, square, etc.

Fig. 2a shows a state in which the stitching hole 3 is bent toward the front to form a concave regular triangular pyramid, and the stitching hole 4 is bent toward the opposite side to form a strip.

Figure 2b shows its side view.

FIG. 3 shows a state in which the front end 5 and rear end 6 of FIGS. 1 and 2 are rolled together as shown by arrows 7 and 8 and joined together by another method to form a ring. Also,
FIG. 4a shows this applied example, which is made solid with a protector 10 for convenient handling, has a center hole 11, and has a shape that can be easily attached to a marker buoy pole.

Figure 4b represents its side view. Of course, the protector has no effect on radio waves, and can be applied to polygonal shapes.

In other words, as shown in Fig. 1, the present invention is an M-shaped structure in which the vertices of three right-angled isosceles triangles (reflection surface 1) coincide and are continuous, and one side of the square has a notch of the right-angled isosceles triangle. 2 of this M-shaped part.
Two continuous pieces are made with each notch facing in the opposite direction and the sides corresponding to the vertical direction of the M shape facing each other.
A continuous M-shaped part is provided, and the lower side of one double M-shaped part corresponds to the horizontal direction of the M-shape, and the other double M-shaped part has a horizontal direction of the M-shape. A thin plate of a good electrical conductor is made in the shape of a plurality of consecutive double M-shaped parts arranged so that the upper sides corresponding to 2 are facing each other, and then bent. A corner-shaped reflector, that is, a reflector in which reflectors with triangular pyramidal concave surfaces are arranged in an annular manner can be obtained.

[Effect of idea]

According to the present invention, as mentioned above, only one thin plate formed into a predetermined shape is sufficient, so when transporting it, when there is not much, it is a thin plate that can be rolled up like a paper roll, and when there is a large amount, it can be rolled up like a paper roll. You can stack these pieces together to make a compact one. In addition, thin plates can be formed only by punching and press processing during manufacturing.
It has the advantage of being able to be bent manually and formed into a reflector on-site, and can be provided at a low cost.

[Brief explanation of the drawing]

The drawings show an embodiment, and FIG. 1 is a diagram of the unfolded state, FIG. 2a is a side view of the state folded into a belt shape, and FIG. 2b
Figure 2a is a plan view of Figure 2a, Figure 3 is a plan view of the one in Figure 2b bent into an annular shape, Figure 4a is a plan view of an example of the one in Figure 3 made into a solid, and Figure 4b is a plan view of the one in Figure 3. 4a is a side view of FIG. 4a; FIG. 1... Reflective surface, 2... Apex, 3, 4... Sewing hole, 5... Front end, 6... Rear end, 7, 8... Arrow,
9... Center void, 10... Protective body, 11... Center hole.

Claims (1)

[Scope of utility model registration request] Two M-shaped parts are arranged in an M-shape in which the vertices of three right-angled isosceles triangles coincide and are continuous and have a right-angled isosceles triangle notch on one side of the square. and the M
Two consecutive M-shaped portions are connected with the sides corresponding to the vertical direction of the character shape facing each other. The M in one of the double M-shaped portions
A member made of a plurality of continuous right-angled isosceles triangular electrically conductive thin plates having a shape in which a plurality of double M-shaped portions are successively connected, with the upper sides corresponding to the horizontal direction of the letter-shaped portions facing each other. A corner-type radar reflector characterized in that it has a shape in which a band-like continuous body of concave triangular pyramidal reflectors is closed in an annular shape, which is formed by bending the seam holes of the opposing portions of the right-angled isosceles triangles.