Folding assembly type corner reflection device

Abstract

The invention relates to the technical field of radar target characteristic testing, in particular to a folding assembly type corner reflection device, and a supporting frame of the device comprises a base and two folding frames. The base is formed by vertically intersecting one ends of two base rods. The two folding frames are installed at the other ends of the two base rods respectively and can be folded in the direction of the base. And a limiting plate is arranged on the lower side of the folding frame. Magnets are respectively arranged on the inner sides of the two base rods and the two folding frames, and the magnets on the same side form a magnetic attraction surface. The two metal reflecting plates are magnetically attracted to the two magnetic attraction faces respectively, the right-angle sides of the two metal reflecting plates abut against each other, the right angle of the third metal reflecting plate is inserted into the right angle of the base and located between the other two metal reflecting plates, and the two right-angle sides abut against the right-angle sides of the lower sides of the other two metal reflecting plates. According to the folding assembly type corner reflection device, the corner reflection precision can be guaranteed, meanwhile, corner reflection metal plates of different sizes can be conveniently replaced to change the size of the corner reflection, and the folding assembly type corner reflection device is convenient to store and carry.

Description

Technical Field

[0001] The present invention relates to the technical field of radar target characteristic testing, and particularly to a foldable and assembled corner reflector device. Background Art

[0002] In radar target characteristic testing, corner reflectors are widely used as calibration targets and test targets. Due to their unique structural design, they can reflect radar beams back with extremely strong echo signals, thereby providing a known and highly reflective target for the radar system. This enables researchers to accurately evaluate measurement accuracy and the like.

[0003] During the process of target testing, the perpendicularity between the two surfaces of the corner reflector, as well as the roughness of the surface of the triangular metal plate and the flatness of the metal plate, greatly affect the accuracy of radar echo signal reflection. In the prior art, the triangular corner reflector is formed by welding three isosceles triangular metal plates or by inserting multiple metal plates, resulting in poor accuracy of the corner reflector, being not easy to carry, and having a fixed size and being unable to meet different test requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a foldable and assembled corner reflector device, which can, while ensuring the accuracy of the corner reflector, conveniently replace corner reflector metal plates of different sizes to change the size of the corner reflector and is convenient for storage and carrying.

[0005] To achieve the above purpose, the present invention provides a foldable and assembled corner reflector device, which is characterized by including:

[0006] A support frame, including a base and two foldable frames. The base includes two base rods that intersect perpendicularly at one end. First magnets are respectively arranged on the inner sides of the two base rods. The two foldable frames are respectively installed on the other ends of the two base rods and can be folded towards the base. A limiting plate is provided on the lower side of the foldable frame. When the foldable frame is unfolded, the upper side of the limiting plate abuts against the lower end of the base rod. Second magnets are respectively arranged on the inner sides of the two foldable frames. The first magnet and the second magnet on the same side are located in the same plane, forming a magnetic attraction surface. The two magnetic attraction surfaces are arranged perpendicularly;

[0007] Three metal reflectors, the shapes of the metal reflectors are all right triangles. One right-angled side of two of the metal reflectors abuts against the right angle inside the base and intersects perpendicularly, and are respectively magnetically attracted and fixed by the two magnetic attraction surfaces. The right angle of the other metal reflector abuts against the right angle inside the base and intersects perpendicularly with the other two metal reflectors.

[0008] Optionally, the foldable frame is hinged to the base rod.

[0009] Optionally, the folding frame includes a rocker, a first link, a support rod, a second link, and a folding rod. One end of the rocker is hinged to the upper end of the base rod, and the other end is hinged to one end of the folding rod facing the base. One end of the first link is hinged to the rocker. The second link is located outside the rocker and one end thereof is hinged to the folding rod. One end of the support rod is hinged to the lower end of the base rod, and the other end is hinged to the other ends of the first link and the second link. One end of the limiting plate is mounted on the folding rod, and the second magnet is mounted on the folding rod.

[0010] Optionally, the strut extends into the receiving groove and is hinged to the base rod.

[0011] Optionally, a long hole penetrating the rocker is provided on the rocker, and the support rod passes through the long hole.

[0012] Optionally, the cross section of the folding rod is U-shaped, and the second link and the rocker both extend into the U-shaped groove of the folding rod and are hinged to the folding rod.

[0013] Optionally, both the first link and the second link have bent sections for avoiding adjacent rods when the folding frame is folded.

[0014] Optionally, the first magnet is embedded in the base rod and flush with the outer surface of the base rod, and the second magnet is embedded in the folding rod and flush with the outer surface of the folding rod.

[0015] Optionally, the upper side of the limiting plate is a plane, and the lower side is an inclined surface. The first end of the limiting plate is connected to the folding rod, and the other end abuts against the lower end of the base rod when the folding frame is unfolded. Moreover, the thickness of the limiting plate in the up and down direction gradually decreases from the middle between the first end and the second end to the first end and the second end.

[0016] Optionally, the shapes of the metal reflectors are all isosceles right triangles of the same size.

[0017] The above technical solutions of the present invention have the following advantages:

[0018] The foldable and assembled corner reflector device provided by the present invention comprises three metal reflector plates and a support frame. The support frame includes a base and two foldable frames. The base includes two base rods, and one ends of the two base rods intersect vertically to form a right-angle base. First magnets are respectively arranged on the inner sides of the two base rods. The two foldable frames are respectively installed on the other ends of the two base rods and can be folded towards the base. A limiting plate is arranged on the lower side of the foldable frame. Second magnets are respectively arranged on the inner sides of the two foldable frames. The first magnet and the second magnet on the same right-angle side are located in the same plane to form a magnetic attraction surface. The two metal reflector plates are respectively magnetically attracted on the two magnetic attraction surfaces, and the right-angle sides are abutted against each other. The right angle of the third metal reflector plate is inserted into the right angle inside of the base and is located between the other two metal reflector plates. The two right-angle sides are abutted against the right-angle sides of the other two metal reflector plates located on the lower side to form a corner reflector device. The foldable and assembled corner reflector device can, while ensuring the corner reflection accuracy, conveniently replace corner reflector metal plates of different sizes to change the size of the corner reflection and is convenient for storage and carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings of the present invention are provided only for the purpose of illustration, and the proportions and quantities of the components in the drawings are not necessarily consistent with the actual products.

[0020] Figure 1 It is a back-side three-dimensional schematic diagram of a foldable and assembled corner reflector device in an embodiment of the present invention;

[0021] Figure 2 It is a front-side three-dimensional schematic diagram of a foldable and assembled corner reflector device in an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a support frame in an embodiment of the present invention;

[0023] Figure 4 It is Figure 3 a structural schematic diagram of a state during the folding process of the support frame in

[0024] Figure 5 It is Figure 3 a structural schematic diagram of the folded state of the support frame in

[0025] In the drawings:

[0026] 1: Metal reflector plate;

[0027] 2: Support frame;

[0028] 21: Base;

[0029] 211: Base rod;

[0030] 2111: Accommodating groove;

[0031] 22: Foldable frame;

[0032] 221: Rocker

[0033] 2211: Long hole

[0034] 222: First connecting rod

[0035] 223: Support rod

[0036] 224: Second connecting rod

[0037] 225: Folding rod

[0038] 23: Limit plate

[0039] 3: First magnet

[0040] 4: Second magnet Detailed implementation manners

[0041] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] As Figure 1 and Figure 2 shown, the foldable and assembled corner reflector device provided by the embodiment of the present invention includes three metal reflector plates 1 and a support frame 2.

[0043] Among them, as shown in Figure 3 , the support frame 2 includes a base 21 and two foldable frames 22. The base 21 includes two base rods 211. One ends of the two base rods 211 intersect perpendicularly to form a right-angle base. First magnets 3 are respectively provided on the inner sides (inside the right angle of the base) of the two base rods 211. The two foldable frames 22 are respectively installed on the other ends of the two base rods 211 and can be folded towards the base 21. The foldable frames 22 are equivalent to the extensions of the base 21 along the right-angle direction, that is, the foldable frames 22 and the base 21 form the right-angle sides. A limit plate 23 is provided on the lower side of the foldable frame 22. When the foldable frame 22 is unfolded, the upper side of the limit plate 23 abuts against the lower end of the base rod 211. Second magnets 4 are respectively provided on the inner sides of the two foldable frames 22. The first magnet 3 and the second magnet 4 on the same right-angle side are located in the same plane to form a magnetic attraction surface, and the two magnetic attraction surfaces are arranged perpendicularly.

[0044] ​During use, the folding frame 22 is unfolded. At this time, the limiting plate 23 abuts against the lower end of the base rod 211 to ensure that the unfolding is in place. The two metal reflectors 1 are respectively magnetically attracted to the two magnetic attraction surfaces. One right-angle side of each of the two metal reflectors 1 abuts against the right angle of the base 21, so that the right-angle sides of the two metal reflectors 1 abut against each other, and the other right-angle sides of the two metal reflectors 1 are located on the lower side. The right angle of the third metal reflector 1 is inserted into the inner side of the right angle of the base 21 and is located between the other two metal reflectors 1. The two right-angle sides abut against the right-angle sides located on the lower side of the other two metal reflectors 1 to form a corner reflector device. When it is necessary to transport, store or replace the metal reflector 1, it can be achieved only by separating the metal reflector 1 from the magnetic attraction surface. The protection is simple and convenient, and the metal reflector 1 is of an integral structure, and the accuracy of radar echo signal reflection is high. When metal reflectors 1 of different sizes are required, only the metal reflector 1 of the corresponding size needs to be replaced, without replacing the support frame 2 or adjusting the structure of the support frame 2. This folding and assembling type corner reflector device can, while ensuring the corner reflection accuracy, conveniently replace corner reflector metal plates of different sizes to change the size of the corner reflection and is convenient for storage and carrying.

[0045] For the convenience of the installation and connection between the folding frame 22 and the base 21 as well as the folding and unfolding operations, see Figure 3 As shown, in one example, the folding frame 22 is hinged to the base rod 211.

[0046] In one example, see Figure 3 As shown, the folding frame 22 includes a rocker 221, a first connecting rod 222, a support rod 223, a second connecting rod 224 and a folding rod 225. One end of the rocker 221 is hinged to the upper end of the base rod 211, and the other end is hinged to one end of the folding rod 225 facing the base 21. One end of the first connecting rod 222 is hinged to the rocker 221. The second connecting rod 224 is located outside the rocker 221, and one end is hinged to the folding rod 225. One end of the support rod 223 is hinged to the lower end of the base rod 211, and the other end is hinged to the other ends of the first connecting rod 222 and the second connecting rod 224. One end of the limiting plate 23 is installed on the folding rod 225, and the second magnet 4 is installed on the folding rod 225. See Figure 4 and Figure 5 As shown, when folding is required, pulling up the folding rod 225 can achieve the folding of the folding frame 22 towards the base 21. Similarly, when unfolding is required, pulling down the folding rod 225 can achieve the unfolding of the folding frame 22.

[0047] In order to further reduce the volume after folding and facilitate the arrangement of the rods, in one example, see Figure 3As shown, one end of the base rod 211 facing the folding frame 22 is provided with a receiving groove 2111, and the rocker 221 and the support rod 223 extend into the receiving groove 2111 and are hinged to the base rod 211. When folding, the rocker 221 can be folded more towards the base 21. At the same time, the overall weight of the device can also be reduced.

[0048] In order to facilitate the arrangement of each rod, reduce interference, and at the same time minimize the overall weight of the device, in one example, as Figure 3 shown, the rocker 221 is provided with a long hole 2211 penetrating through the rocker 221, and the support rod 223 passes through the long hole 2211.

[0049] In one example, the cross-section of the folding rod is U-shaped, that is, it has a U-shaped groove, and both the second link 224 and the rocker 221 extend into the U-shaped groove of the folding rod 225 and are hinged to the folding rod 225. The folding rod 225 with a U-shaped groove has a smaller weight.

[0050] In order to reduce the volume after folding, reduce interference during the folding process, and at the same time increase the strength of the structure, in one example, see Figure 3 and Figure 5 shown, both the first link 222 and the second link 224 have bent sections for avoiding adjacent rods when the folding frame 22 is folded. Specifically, the bent section can be bent in the direction opposite to the side where interference may occur, and it can be one bend or multiple bends according to needs.

[0051] In this embodiment, as long as the first magnet 3 and the second magnet 4 on the same side increase equally, they can protrude from the mounting surface or be flush with the mounting surface. Preferably, the first magnet 3 is embedded in the base rod 211 and is flush with the outer surface of the base rod 211, and the second magnet 4 is embedded in the folding rod 225 and is flush with the outer surface of the folding rod 225.

[0052] In this embodiment, the cross-sections of the above-mentioned base rod, rocker, first link, support rod, second link, and folding rod are all rectangular.

[0053] In order to improve the strength of the limiting plate 23 while minimizing the weight of the limiting plate 23, in one example, the upper side of the limiting plate 23 is a plane, the lower side is an inclined plane, the first end of the limiting plate 23 is connected to the folding rod 225, and the other end abuts against the lower end of the base rod 211 when the folding frame 22 is unfolded, and the thickness of the limiting plate 23 in the up and down direction gradually decreases from the middle between the first end and the second end to the first end and the second end.

[0054] In this embodiment, the shapes of the metal reflector plates 1 are all isosceles right triangles of the same size.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that not every embodiment only contains an independent technical solution, and in the case of no conflict between the solutions, the various technical features mentioned in each embodiment can be combined in any way to form other embodiments that can be understood by those skilled in the art.

[0056] In addition, without departing from the scope of the present invention, modifying the technical solutions recorded in the foregoing embodiments, or equivalently replacing some of the technical features, does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A foldable and assembled corner reflector device, characterized in that, Comprising: A support frame, including a base and two folding frames. The base includes two base rods that intersect perpendicularly at one end. First magnets are respectively provided on the inner sides of the two base rods. The two folding frames are respectively installed on the other ends of the two base rods and can be folded towards the base. A limiting plate is provided on the lower side of the folding frame. When the folding frame is unfolded, the upper side of the limiting plate abuts against the lower end of the base rod. Second magnets are respectively provided on the inner sides of the two folding frames. The first magnet and the second magnet on the same side are located in the same plane, forming a magnetic attraction surface. The two magnetic attraction surfaces are arranged perpendicularly. Three metal reflector plates. The shapes of the metal reflector plates are all right-angled triangles. One right-angled side of each of the two metal reflector plates abuts against the right angle inside the base and intersects perpendicularly, and is respectively magnetically fixed by the two magnetic attraction surfaces. The right angle of the other metal reflector plate abuts against the right angle inside the base and intersects perpendicularly with the other two metal reflector plates.

2. The foldable and assembled corner reflector device according to claim 1, wherein: The folding frame and the base rod are hinged.

3. The foldable and assembled corner reflector device according to claim 2, characterized in that: The folding frame includes a rocker, a first connecting rod, a support rod, a second connecting rod, and a folding rod. One end of the rocker is hinged to the upper end of the base rod, and the other end is hinged to one end of the folding rod facing the base. One end of the first connecting rod is hinged to the rocker. The second connecting rod is located outside the rocker, and one end is hinged to the folding rod. One end of the support rod is hinged to the lower end of the base rod, and the other end is hinged to the other ends of the first connecting rod and the second connecting rod. One end of the limiting plate is installed on the folding rod, and the second magnet is installed on the folding rod.

4. The foldable and assembled corner reflector device according to claim 3, wherein: A receiving groove is provided at one end of the base rod facing the folding frame. The rocker and the support rod extend into the receiving groove and are hinged to the base rod.

5. The foldable and assembled corner reflector device according to claim 4, wherein: A long hole penetrating the rocker is provided on the rocker. The support rod passes through the long hole.

6. The foldable and assembled corner reflector device according to claim 5, wherein: The cross-section of the folding rod is U-shaped. The second connecting rod and the rocker both extend into the U-shaped groove of the folding rod and are hinged to the folding rod.

7. The foldable and assembled corner reflector device according to claim 6, wherein: Both the first connecting rod and the second connecting rod have bent sections for avoiding adjacent rods when the folding frame is folded.

8. The foldable and assembled corner reflector device according to claim 6, wherein: The first magnet is embedded in the base rod and is flush with the outer surface of the base rod. The second magnet is embedded in the folding rod and is flush with the outer surface of the folding rod.

9. The foldable and assembled corner reflector device according to claim 3, wherein: The upper side surface of the limiting plate is a plane, and the lower side surface is an inclined surface. The first end of the limiting plate is connected to the folding rod, and the other end abuts against the lower end of the base rod when the folding frame is unfolded. And the thickness of the limiting plate in the up and down direction gradually decreases from the middle between the first end and the second end to the first end and the second end.

10. The foldable and assembled corner reflector device according to claim 1, characterized in that: The shapes of the metal reflector plates are all isosceles right-angled triangles of the same size.

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