A foldable corner reflector

Abstract

This invention relates to the field of electromagnetic properties technology, and particularly to a foldable corner reflector. A foldable corner reflector includes a first reflector, a second reflector, and a third reflector, all in the shape of a right-angled triangle. Each of the first, second, and third reflectors includes a first right-angled side and a second right-angled side. The first right-angled side of the first reflector is hinged to the first right-angled side of the second reflector, and the second right-angled side of the second reflector is hinged to the first right-angled side of the third reflector. The second right-angled side of the third reflector is detachably connected to the second right-angled side of the first reflector. This invention provides a foldable corner reflector that is easy to store and transport.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic properties technology, and in particular to a foldable corner reflector. Background Technology

[0002] Corner reflectors are typical passive targets with a strong backscattered radar cross section (RSS). They can simultaneously jam radars of various types and from various directions, offering the advantage of high cost-effectiveness in jamming. Therefore, they are widely used in electronic warfare, radar reconnaissance and early warning, and other operational environments. Simultaneously, as RCS enhancers, calibration targets, or target objects, corner reflectors are widely used in radar remote sensing, maritime search and rescue, indoor and outdoor target characteristic testing, and simulated targets.

[0003] In related technologies, the three reflective surfaces of corner reflectors are rigidly connected. After the corner reflector is manufactured, because the three triangular reflective surfaces are perpendicular to each other, the reflector occupies a large space, making it inconvenient to store and transport. Especially when corner reflectors are used as mobile radar jammers or countermeasures devices, they need to be moved and quickly retrieved and deployed along with the protected target. However, the fixed structure of corner reflectors makes them very inconvenient to carry and transport, severely restricting their application.

[0004] Therefore, in order to address the above shortcomings, there is an urgent need for a corner reflector that is easy to store and transport. Summary of the Invention

[0005] This invention provides a foldable corner reflector that is easy to store and transport.

[0006] This invention provides a foldable corner reflector, comprising a first reflector, a second reflector, and a third reflector in the shape of a right-angled triangle. Each of the first, second, and third reflectors includes a first right-angled side and a second right-angled side. The first right-angled side of the first reflector is hinged to the first right-angled side of the second reflector, and the second right-angled side of the second reflector is hinged to the first right-angled side of the third reflector. The second right-angled side of the third reflector is detachably connected to the second right-angled side of the first reflector.

[0007] When it is necessary to fold the corner reflector, the connection between the first reflector and the third reflector is disconnected, the third reflector is folded toward the second reflector, and then the folded second reflector and the third reflector are folded toward the first reflector, so that the first reflector, the second reflector and the third reflector are folded into three layers.

[0008] In one possible design, the second right-angled side of the first reflector is provided with a limiting seat, the limiting seat is provided with a slot for inserting the third reflector, the portion of the third reflector inserted into the slot is provided with a through hole, and the limiting seat is also provided with a spring plunger, the spring plunger including a pin;

[0009] When it is necessary to connect the first reflector and the third reflector, pull out the pin to insert the third reflector into the slot, and release the pin to allow it to pass through the through hole in the slot. When it is necessary to separate the first reflector and the third reflector, pull out the pin to remove the third reflector from the slot.

[0010] In one possible design, the width of the slot is the same as the thickness of the third reflector, and the outer diameter of the pin is the same as the diameter of the through hole.

[0011] In one possible design, the first reflector, the second reflector, and the third reflector each include a reflective surface for reflecting electromagnetic waves and a mounting surface for mounting hinges. The mounting surfaces of the first reflector, the second reflector, and the third reflector are all provided with reinforcing plates, which are used to increase the strength, stiffness, and surface accuracy of the first reflector, the second reflector, and the third reflector.

[0012] In one possible design, the reinforcing plate is disposed at the edge of the mounting surface.

[0013] In one possible design, the first reflector and the second reflector are hinged by a first hinge, and the second reflector and the third reflector are hinged by a second hinge. The first hinge includes a first part, a second part, a third part, and a fourth part connected in sequence. The plane of the first part is perpendicular to the plane of the second part, and the plane of the third part is perpendicular to the plane of the fourth part. The second part and the third part are provided with shaft holes, and a rotating shaft passes through the shaft holes to connect the second part and the third part. The first part is in contact with the reinforcing plate of the first reflector, the second part is parallel to the side of the first reflector and the reinforcing plate, the third part is parallel to the side of the second reflector and the reinforcing plate, and the fourth part is in contact with the reinforcing plate of the second reflector. The second hinge includes a first leaf and a second leaf, and the first leaf and the second leaf are provided with shaft holes, and a rotating shaft passes through the shaft holes to connect the first leaf and the second leaf.

[0014] In one possible design, the inner diameter of the shaft hole is the same as the outer diameter of the rotating shaft to keep the first hinge and the second hinge stable during rotation.

[0015] In one possible design, after folding the corner reflector, the height of the second portion is equal to the sum of the thicknesses of the first reflector and the reinforcing plate, and the height of the third portion is equal to the sum of the thicknesses of the second reflector and the reinforcing plate.

[0016] In one possible design, the reinforcing plate is fixed to the mounting surface by countersunk screws, and the area where the countersunk screws are located on the reflective surface is filled with metal putty to make the reflective surface flat.

[0017] In one possible design, the reflective surface is coated with a primer and / or silver paint to improve its smoothness, salt spray resistance, and corrosion resistance.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In this embodiment, the first, second, and third reflectors are isosceles right triangles and perpendicular to each other. The first and second reflectors are hinged together, as are the second and third reflectors. The first and third reflectors are detachably connected. The corner reflector is tetrahedral in shape, with three faces of the tetrahedron consisting of three reflectors. The face of the tetrahedron without a reflector is the aperture of the corner reflector. Electromagnetic waves enter the tetrahedron formed by the corner reflector through the aperture. The electromagnetic waves are reflected multiple times by the corner reflector. A small corner reflector can form a large radar cross section, which can simultaneously interfere with radars of various types and directions, thereby protecting high-value targets.

[0020] When a foldable corner reflector is needed, first disconnect the connection between the first and third reflectors, fold the third reflector towards the second reflector, and then fold the folded second and third reflectors towards the first reflector, so that the first, second, and third reflectors are folded into three layers. The folded corner reflector is small in size, which is beneficial for storage and transportation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a foldable corner reflector in its working state according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the working state of another foldable corner reflector provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the folded state of a foldable corner reflector provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a first hinge provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a second hinge provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of a limiting seat provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 1-First reflector;

[0030] 2-Second reflector;

[0031] 3-Third reflector;

[0032] 4-Limiting seat;

[0033] 41-Spring plunger;

[0034] 5-Reinforcing plate;

[0035] 6-First hinge;

[0036] 61 - Part One;

[0037] 62 - Part Two;

[0038] 63 - Part Three;

[0039] 64 - Part Four;

[0040] 7-Second hinge;

[0041] 71 - First page;

[0042] 72 - Page 2. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] In the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or stated, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0045] In this specification, it should be understood that the directional terms such as "upper" and "lower" used in the description of the embodiments of the present invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of the present invention. Furthermore, in the context, it should also be understood that when it is mentioned that one element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0046] like Figures 1 to 3 As shown, this embodiment of the invention provides a foldable corner reflector, including a first reflector 1, a second reflector 2, and a third reflector 3 in the shape of a right triangle. The first reflector 1, the second reflector 2, and the third reflector 3 each include a first right-angled side and a second right-angled side. The first right-angled side of the first reflector 1 is hinged to the first right-angled side of the second reflector 2, and the second right-angled side of the second reflector 2 is hinged to the first right-angled side of the third reflector 3. The second right-angled side of the third reflector 3 is detachably connected to the second right-angled side of the first reflector 1.

[0047] When a folded corner reflector is needed, the connection between the first reflector 1 and the third reflector 3 is disconnected, the third reflector 3 is folded toward the second reflector 2, and then the folded second reflector 2 and the third reflector 3 are folded toward the first reflector 1, so that the first reflector 1, the second reflector 2 and the third reflector 3 are folded into three layers.

[0048] In this embodiment, the first reflector 1, the second reflector 2, and the third reflector 3 form isosceles right triangles and are perpendicular to each other. The first reflector 1 and the second reflector 2 are hinged together, the second reflector 2 and the third reflector 3 are hinged together, and the first reflector 1 and the third reflector 3 are detachably connected. The corner reflector is tetrahedral in shape, wherein three faces of the tetrahedron are composed of three reflectors, and the face of the tetrahedron without reflectors is the aperture of the corner reflector. Electromagnetic waves enter the tetrahedron formed by the corner reflector through the aperture. The electromagnetic waves are reflected multiple times by the corner reflector. A small corner reflector can form a large radar cross section, which can simultaneously interfere with radars of various types and directions, thereby achieving the protection of high-value targets.

[0049] When a foldable corner reflector is needed, first disconnect the connection between the first reflector 1 and the third reflector 3, fold the third reflector 3 towards the second reflector 2, and then fold the folded second reflector 2 and third reflector 3 towards the first reflector 1, so that the first reflector 1, second reflector 2, and third reflector 3 are folded into three layers. The folded corner reflector is small in size, which is beneficial for storage and transportation.

[0050] like Figure 1 and Figure 6 As shown, in some embodiments of the present invention, the second right-angled side of the first reflector 1 is provided with a limiting seat 4, the limiting seat 4 is provided with a slot for inserting the third reflector 3, the part of the third reflector 3 inserted into the slot is provided with a through hole, and the limiting seat 4 is also provided with a spring plunger 41, the spring plunger 41 including a pin.

[0051] When it is necessary to connect the first reflector 1 and the third reflector 3, pull out the pin to insert the third reflector 3 into the slot, and release the pin to allow it to pass through the through hole in the slot. When it is necessary to separate the first reflector 1 and the third reflector 3, pull out the pin to remove the third reflector 3 from the slot.

[0052] In this embodiment, a limiting seat 4 is provided on the second right-angled side of the first reflector 1. The limiting seat 4 has a slot, and the edge of the third reflector 3 can be inserted into or removed from the slot. To make the third reflector 3 inserted into the slot more secure, a spring plunger 41 is provided on the limiting seat 4. The spring plunger 41 includes a pin, which passes through the limiting seat 4 and into the slot. A spring is provided between the pin and the spring plunger 41, and the spring keeps the pin inserted into the slot. When it is necessary to connect the first reflector 1 and the third reflector 3, the pin is pulled out against the spring force, and the third reflector 3 is inserted into the slot. The part of the third reflector 3 inserted into the slot has a through hole that matches the pin. After the third reflector 3 is inserted into the slot, the pin is released, and the pin is inserted into the through hole, thus fixing the third reflector 3 in the slot.

[0053] In some embodiments of the present invention, the width of the slot is the same as the thickness of the third reflector 3, and the outer diameter of the pin is the same as the diameter of the through hole.

[0054] In this embodiment, the width of the slot is the same as the thickness of the third reflector 3. This design prevents the third reflector 3 from loosening along the thickness direction of the slot. The outer diameter of the pin is the same as the diameter of the through hole. This design prevents the third reflector 3 from loosening along the depth direction of the slot, and also prevents relative movement along the length direction of the slot. By limiting the thickness of the third reflector 3, the outer diameter of the pin, and the inner diameter of the through hole, the connection between the three reflectors 3 is secured, thereby improving the accuracy of the corner reflector.

[0055] In some embodiments of the present invention, the first reflector 1, the second reflector 2, and the third reflector 3 each include a reflective surface for reflecting electromagnetic waves and a mounting surface for mounting hinges. The mounting surfaces of the first reflector 1, the second reflector 2, and the third reflector 3 are all provided with reinforcing plates 5, which are used to increase the strength, rigidity, and surface accuracy of the first reflector 1, the second reflector 2, and the third reflector 3.

[0056] In this embodiment, the reflective surface is used to reflect electromagnetic waves. To maintain the accuracy of the corner reflector, the reflective surface needs to be flat. The mounting surface does not reflect electromagnetic waves; therefore, a reinforcing plate 5 and a hinge can be installed on the mounting surface. The hinge is used to achieve the hinge between the first reflector 1 and the second reflector 2, as well as the hinge between the second reflector 2 and the third reflector 3. Installing the reinforcing plate 5 on the mounting surface can increase the strength, rigidity, and surface accuracy of the reflectors 1, 2, and 3, enabling the corner reflector to adapt to harsher operating environments and preventing deformation or breakage during transportation or storage.

[0057] In some embodiments of the present invention, the reinforcing plate 5 is disposed at the edge of the mounting surface.

[0058] In this embodiment, the reinforcing plate 5 is set at the edge of the mounting surface to form a frame structure. This arrangement increases the strength, rigidity and surface accuracy of the corner reflector, while also saving materials, reducing the weight of the corner reflector and increasing its aesthetics.

[0059] In some embodiments of the present invention, the first reflector 1 and the second reflector 2 are hinged by a first hinge 6, and the second reflector 2 and the third reflector 3 are hinged by a second hinge 7. The first hinge 6 includes a first part 61, a second part 62, a third part 63 and a fourth part 64 connected in sequence. The plane of the first part 61 is perpendicular to the plane of the second part 62, and the plane of the third part 63 is perpendicular to the plane of the fourth part 64. The second part 62 and the third part 63 are provided with shaft holes, and a rotating shaft passes through the shaft holes to connect the second part 62 and the third part 63. The first part 61 is in contact with the reinforcing plate 5 of the first reflector 1, the second part 62 is parallel to the side of the first reflector 1 and the reinforcing plate 5, the third part 63 is parallel to the side of the second reflector 2 and the reinforcing plate, and the fourth part 64 is in contact with the reinforcing plate of the second reflector 2. The second hinge 7 includes a first leaf and a second leaf 72. The first leaf 71 and the second leaf 72 are provided with shaft holes, and a rotating shaft passes through the shaft holes to connect the first leaf 71 and the second leaf 72.

[0060] Please refer to Figure 4 The first part 61 and the second part 62 are perpendicular to each other, and the third part 63 and the fourth part 64 are perpendicular to each other. The second part 62 and the third part 63 are rotatably connected. With this configuration, after the corner reflector is folded, the second part 62 and the third part 63 increase the space thickness between the first part 61 and the fourth part 64. This thickness space is used to accommodate the folded first reflector 1 and the second reflector 2. Please refer to... Figure 5 The first leaf 71 and the second leaf 72 of the second hinge 7 are both flat leaves. With this arrangement, after the corner reflector is folded, the first leaf 71 and the second leaf 72 of the second hinge 7 are folded between the second reflector 2 and the third reflector 3.

[0061] It should be noted that the second part 212 is parallel to the side of the first reflector 1 and the reinforcing plate, and the third part 213 is parallel to the side of the second reflector 2 and the reinforcing plate. The second part 212 and the third part 213 do not contact the reflectors. This arrangement can prevent the reflectors from interfering with each other during the folding process.

[0062] In some embodiments of the present invention, the inner diameter of the shaft hole is the same as the outer diameter of the rotating shaft so that the first hinge 6 and the second hinge 7 remain stable during rotation.

[0063] In this embodiment, the inner diameter of the shaft hole is the same as the outer diameter of the rotating shaft, and the rotating shaft fits perfectly with the shaft hole. This arrangement ensures that the first hinge 6 and the second hinge 7 remain stable during rotation, thereby improving the accuracy of the corner reflector.

[0064] It is understandable that when folding the corner reflector, the third reflector 3 can be folded inwards, meaning that after folding, the reflective surfaces of the third reflector 3 and the second reflector 2 are in contact, or it can be folded outwards, meaning that after folding, the mounting surfaces of the third reflector 3 and the second reflector 2 are in contact. If the inward folding option is chosen, the third reflector 3 will be located between the first reflector 1 and the second reflector 2 after folding. In this case, the shape of the first hinge 6 needs to be designed so that there is space in the middle between the first reflector 1 and the second reflector 2 for stacking the third reflector 3. Thus, when the corner reflector is in working condition, the space reserved for the third reflector 3 by the first hinge 6 will continue to remain between the first reflector 1 and the second reflector 2, resulting in a large gap between the first reflector 1 and the second reflector 2, which will affect the accuracy of the corner reflector. Therefore, the outward folding option is preferred.

[0065] It is understandable that the first hinge 6 and the second hinge 7 can be directly installed on the mounting surface or on the reinforcing plate 5, preferably on the reinforcing plate 5, as installation on the reinforcing plate 5 can protect the flatness of the reflective surface.

[0066] In some embodiments of the present invention, after the folded corner reflector, the height of the second part 62 is equal to the sum of the thicknesses of the first reflector 1 and the reinforcing plate 5, and the height of the third part 63 is equal to the sum of the thicknesses of the second reflector 2 and the reinforcing plate 5.

[0067] In this embodiment, after folding the corner reflector, the height of the second part 62 is equal to the sum of the thicknesses of the first reflector 1 and the reinforcing plate 5, and the height of the third part 63 is equal to the sum of the thicknesses of the second reflector 2 and the reinforcing plate 5. This arrangement allows the first hinge 6 to be rotated while minimizing the gap between the first reflector 1 and the second reflector 2.

[0068] In some embodiments of the present invention, the first part 61, the second part 62, the third part 63, the fourth part 64, the first sheet 71 and the second sheet 72 are all made of stainless steel, and the rotating shaft is made of titanium alloy.

[0069] In this embodiment, titanium alloy has excellent properties such as low density, good rigidity, and high strength, while stainless steel has low cost and high elastic modulus. The materials used to prepare the first part 61, the second part 62, the third part 63, the fourth part 64, the first leaf 71, and the second leaf 72 are stainless steel, and the material used to prepare the shaft is titanium alloy. This can increase the strength of the first hinge 6 and the second hinge 7, and also reduce the density and cost of the first hinge 6 and the second hinge 7.

[0070] It is understandable that the first part 61, the second part 62, the third part 63, the fourth part 64, the first sheet 71, the second sheet 72, and the shaft can all be made of titanium alloy or stainless steel. If all are made of titanium alloy, the cost will be high; if all are made of stainless steel, the density will be high.

[0071] In some embodiments of the present invention, the reinforcing plate 5 is fixed to the mounting surface by countersunk screws, and the area where the countersunk screws are set on the reflective surface is filled with metal putty to make the surface of the reflective surface flat.

[0072] In this embodiment, the reinforcing plate 5 is fixed to the mounting surface by countersunk screws. In order to make the mounting surface fit tightly against the reinforcing plate 5 and thus improve the surface shape of the reflective surface, the countersunk screws need to pass through the reinforcing plate 5 and the reflective plate. This requires the creation of threaded holes through the reflective plate. The threaded holes and the countersunk screws passing through the threaded holes disrupt the surface shape of the reflective surface. Therefore, after fixing the reinforcing plate 5 and the reflective plate by countersunk screws, the threaded holes of the reflective surface need to be filled with metal putty.

[0073] It should be noted that in order to securely connect the reinforcing plate 5 and the reflector, the countersunk screw needs to pass through both the reflector and the reinforcing plate 5. Considering the need to keep the reflective surface flat, and the uncontrollable length of the countersunk screw's tail extending through both, the countersunk screw is driven into the reflector and exits through the reinforcing plate 5. With this setup, the head of the countersunk screw is located on the reflective surface, and the head depth of the countersunk screw is controllable. The corresponding threaded hole is designed according to the head of the countersunk screw to facilitate the use of metal putty to maintain a flat surface.

[0074] In some embodiments of the present invention, the reflective surface is coated with a primer and / or silver paint to improve the smoothness, salt spray resistance and corrosion resistance of the reflective surface.

[0075] In this embodiment, primer and silver paint can be alternately sprayed on the reflective surface to improve the smoothness, salt spray resistance and corrosion resistance of the reflective surface, and also to increase the aesthetics of the reflective surface.

[0076] In some embodiments of the present invention, the materials used to prepare the first reflector 1, the second reflector 2 and the third reflector 3 include rust-resistant aluminum alloy plates with a thickness of 1.5 to 3 mm, and the materials used to prepare the reinforcing plate 5 include high-strength aluminum alloy plates with a thickness of 8 to 20 mm.

[0077] In this embodiment, the first reflector 1, the second reflector 2, and the third reflector 3 are made of rust-resistant aluminum alloy plates with a thickness of 1.5 to 3 mm. The first reflector 1, the second reflector 2, and the third reflector 3 are relatively thin and have excellent lightweight properties. The reinforcing plate 5 is made of high-strength aluminum alloy plates with a thickness of 8 to 20 mm. The thickness is relatively large, and the material is high-strength aluminum alloy plates, so that the reinforcing plate 5 has the characteristics of being both strong and lightweight.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foldable corner reflector, characterized by, The application relates to a corner reflector, which comprises a first reflecting plate (1), a second reflecting plate (2) and a third reflecting plate (3) in the shape of a right-angled triangle, the first reflecting plate (1), the second reflecting plate (2) and the third reflecting plate (3) each comprising a first right-angled side and a second right-angled side, the first right-angled side of the first reflecting plate (1) being hinged to the first right-angled side of the second reflecting plate (2), the second right-angled side of the second reflecting plate (2) being hinged to the first right-angled side of the third reflecting plate (3), and the second right-angled side of the third reflecting plate (3) being detachably connected to the second right-angled side of the first reflecting plate (1). When the corner reflector needs to be folded, the connection between the first reflecting plate (1) and the third reflecting plate (3) is disassembled, the third reflecting plate (3) is folded towards the second reflecting plate (2), and then the second reflecting plate (2) and the third reflecting plate (3) in the folded state are folded towards the first reflecting plate (1), so that the first reflecting plate (1), the second reflecting plate (2) and the third reflecting plate (3) are folded into three layers. The first reflecting plate (1), the second reflecting plate (2) and the third reflecting plate (3) each comprise a reflecting surface for reflecting electromagnetic waves and a mounting surface for mounting a hinge, the mounting surfaces of the first reflecting plate (1), the second reflecting plate (2) and the third reflecting plate (3) are each provided with a reinforcing plate (5) for increasing the strength, rigidity and surface accuracy of the first reflecting plate (1), the second reflecting plate (2) and the third reflecting plate (3). The first reflecting plate (1) and the second reflecting plate (2) are hinged through a first hinge (6), the second reflecting plate (2) and the third reflecting plate (3) are hinged through a second hinge (7), the first hinge (6) comprises a first part (61), a second part (62), a third part (63) and a fourth part (64) connected in sequence, the plane where the first part (61) is located is perpendicular to the plane where the second part (62) is located, the plane where the third part (63) is located is perpendicular to the plane where the fourth part (64) is located, the second part (62) and the third part (63) are provided with shaft holes, a shaft passes through the shaft holes to connect the second part (62) and the third part (63), the first part (61) is attached to the reinforcing plate (5) of the first reflecting plate (1), the second part (62) is parallel to the side surface of the first reflecting plate (1) and the reinforcing plate (5), the third part (63) is parallel to the side surface of the second reflecting plate (2) and the reinforcing plate, and the fourth part (64) is attached to the reinforcing plate of the second reflecting plate (2), the second hinge (7) comprises a first leaf and a second leaf (72), the first leaf (71) and the second leaf (72) are provided with the shaft holes, and the shaft passes through the shaft holes to connect the first leaf (71) and the second leaf (72).

2. The corner reflector of claim 1, wherein The second straight edge of the first reflector plate (1) is provided with a limiting seat (4), the limiting seat (4) is provided with a clamping groove, the clamping groove is used for inserting the third reflector plate (3), the part of the third reflector plate (3) inserted into the clamping groove is provided with a through hole, the limiting seat (4) is further provided with a spring plunger (41), the spring plunger (41) comprises a latch; When the first reflector plate (1) and the third reflector plate (3) need to be connected, the latch is pulled out to make the third reflector plate (3) inserted into the clamping groove, the latch is released to make it penetrate into the through hole in the clamping groove, when the first reflector plate (1) and the third reflector plate (3) need to be disassembled, the latch is pulled out to pull out the third reflector plate (3) from the clamping groove.

3. The corner reflector of claim 2, wherein, The width of the clamping groove is the same as the thickness of the third reflector plate (3), the outer diameter of the latch is the same as the diameter of the through hole.

4. The corner reflector of claim 1, wherein The reinforcing plate (5) is arranged at the edge of the mounting surface.

5. The corner reflector of claim 1, wherein The inner diameter of the shaft hole is the same as the outer diameter of the rotating shaft to make the first hinge (6) and the second hinge (7) stable during rotation.

6. The corner reflector of claim 1, wherein After folding the corner reflector, the height of the second part (62) is equal to the sum of the thickness of the first reflector plate (1) and the reinforcing plate (5), the height of the third part (63) is equal to the sum of the thickness of the second reflector plate (2) and the reinforcing plate (5).

7. The corner reflector of claim 1, wherein The reinforcing plate (5) is fixed on the mounting surface by a countersunk screw, the part of the reflecting surface where the countersunk screw is arranged is filled with metal putty to make the surface type of the reflecting surface flat.

8. The corner reflector of claim 1, wherein The reflecting surface is sprayed with primer and / or silver powder paint to improve the flatness, salt spray resistance and corrosion resistance of the reflecting surface.

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