Microwave anechoic chamber test support

Abstract

The utility model relates to the technical field of antenna testing, in particular to a microwave anechoic chamber testing support which comprises a supporting base, a supporting column and a supporting shielding connecting piece, the supporting base is sleeved with a shielding layer, the top end of the supporting column is located on the outer side of the supporting base, and the bottom end of the supporting column penetrates through the shielding layer and extends into the supporting base. The support shielding connecting piece is located on the outer side of the shielding layer, and the support column is connected with the shielding layer through the support shielding connecting piece; the structure is simple, the supporting column extends into the supporting base, the stability and reliability of to-be-tested equipment after being connected with the supporting column are improved, and it is guaranteed that testing is accurate and reliable; meanwhile, the supporting and shielding connecting pieces are arranged on the outer sides of the supporting columns in a sleeving mode, the supporting columns are connected with the shielding layer, the electrical continuity between the supporting columns and the shielding layer is guaranteed while the connecting stability of the supporting columns is improved, the risks of electromagnetic leakage and signal leakage are reduced, the shielding effect of the microwave anechoic chamber is improved, and the testing reliability of the microwave anechoic chamber is further improved; and actual test requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna testing, in particular to a microwave darkroom testing support. Background Art

[0002] A microwave darkroom is a special space composed of absorbing materials and metal shielding bodies. It provides an artificially empty "free space" condition. Testing wireless communication products and electronic products such as antennas and radars in a microwave darkroom can avoid interference from clutter and improve the test accuracy and efficiency of the equipment under test.

[0003] For example, the Chinese utility model patent with announcement number CN218601377U provides a multi-system electromagnetic measurement device, including a microwave darkroom, in which a four-axis turntable system and a two-axis turntable system are arranged. The four-axis turntable system is placed in the microwave darkroom through a first guide rail, and the two-axis turntable system is placed in the microwave darkroom through a base. Both the four-axis turntable system and the two-axis turntable system can be connected to the device to be tested or the material to be tested for testing.

[0004] However, the existing method of supporting the object to be tested has the problem of unstable support shaking, resulting in unreliable test results. At the same time, the supporting structure is complex, which increases the difficulty and cost of shielding the supporting structure and reduces the test efficiency. In addition, it is difficult to check the shielding failure of the supporting structure, which causes signal leakage, reduces the measurement reliability of the object to be tested in the microwave darkroom, and cannot meet the actual measurement needs. Utility Model Content

[0005] The utility model aims to provide a microwave darkroom test support to solve the technical problem that the current microwave darkroom support structure reduces test reliability.

[0006] The utility model solves the above technical problems:

[0007] A microwave darkroom test support, comprising a support base, a support column and a support shielding connector;

[0008] A shielding layer is sleeved on the outside of the support base, the top of the support column is located on the outside of the support base, the bottom of the support column extends through the shielding layer to the inside of the support base, the support shielding connector is located on the outside of the shielding layer, and the support column is connected to the shielding layer through the support shielding connector.

[0009] It is further defined that the support column is welded to the shielding layer.

[0010] It is further defined that the support column is movably connected to the shielding layer.

[0011] It is further defined that the supporting shielding connector includes a fastener and a first shielding net, the fastener and the first shielding net are both mounted on the outside of the supporting column, the first shielding net is in close contact with the outer surface of the supporting column, the first shielding net is in contact with the upper surface of the shielding layer, the first shielding net is located between the fastener and the shielding layer, and the fastener is movably connected to the supporting column.

[0012] It is further defined that the support column is a bolt and the fastener is a nut.

[0013] It is further defined that the supporting shielding connector also includes a flat pad layer, which is sleeved on the outside of the supporting column and is located between the fastener and the first shielding net.

[0014] It is further defined that the flat cushion layer is a gasket.

[0015] It is further defined that the supporting shielding connector also includes a second shielding net, which is sleeved on the outside of the supporting column and in close contact with the supporting column, and the second shielding net is located between the first shielding net and the flat cushion layer.

[0016] It is further defined that both the first shielding mesh and the second shielding mesh are copper meshes or waveguide meshes.

[0017] It is further defined that the supporting shielding connector also includes a filling block, which is sleeved on the outside of the supporting column and located between the second shielding net and the first shielding net; a filling cavity is opened inside the filling block, which is sleeved on the outside of the supporting column, and a shielding interlayer is filled between the filling cavity and the supporting column, and the shielding interlayer is connected to the first shielding net.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model has a simple overall structure. The support column is extended into the support base to improve the stability and reliability of the connection between the device to be tested and the support column, thereby ensuring accurate and reliable testing. At the same time, the support shielding connector is sleeved on the outside of the support column, and the support column is connected to the shielding layer, which improves the stability of the support column connection while ensuring the electrical continuity between the support column and the shielding layer, reducing the risk of electromagnetic leakage and signal leakage, increasing the shielding effect of the microwave darkroom, further improving the test reliability of the microwave darkroom, and meeting actual testing needs.

[0020] 2. The supporting shielding connector of the utility model further improves the electrical continuity between the supporting column and the shielding layer by setting the first shielding layer, the second shielding layer and the filled shielding interlayer, ensures the shielding effect and meets the high shielding requirements of the microwave darkroom. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of the microwave darkroom test support of the utility model;

[0022] Figure 2 This is a cross-sectional view of the microwave darkroom test support of the utility model;

[0023] Figure 3 for Figure 2 The enlarged schematic diagram of part A in the middle;

[0024] In the figure: 10, support base; 11, shielding layer; 20, support column; 21, weld; 30, support shielding connector; 31, fastener; 32, flat cushion layer; 33, second shielding net; 34, filling block; 35, first shielding net; 40, shielding interlayer. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] Example 1

[0030] refer to Figure 1The utility model provides a microwave darkroom test support, including a support base 10, a support column 20 and a support shielding connector 30. The support base 10 is used to lower the center of gravity, realize stable support of the object to be tested, and avoid shaking; a shielding layer 11 is arranged on the outer surface of the support base 10, and the support column 20 is connected to the support base 10; in order to improve the reliability of the connection between the support column 20 and the support base 10, and to improve the stability of the support column 20 after being connected to the object to be tested, it is preferred that the bottom of the support column 20 passes through the shielding layer 11 and extends to the inside of the support base 10. At this time, the support shielding connector 30 is sleeved on the outside of the support column 20, so that the shielding layer 11 is connected to the support column 20 to ensure the shielding effect.

[0031] Specifically, the support base 10 may be a cylindrical or cubic structure, and preferably the support base 10 is a flat structure to increase the contact area with the microwave darkroom and improve the support stability.

[0032] The shielding layer 11 is wrapped around the outer side of the supporting base 10 ; the shielding layer 11 may be a metal plate, which is sleeved on the outer surface of the supporting base 10 .

[0033] When installing the support column 20, a first mounting hole is selected on the support base 10, and a second mounting hole is selected on the shielding layer 11. Preferably, the first mounting hole is a blind hole; the first mounting hole is directly opposite to the second mounting hole, so that the bottom end of the support column 20 passes through the second mounting hole and extends into the first mounting hole.

[0034] The support column 20 may be a cylindrical structure or a prismatic structure. The first mounting hole and the second mounting hole both match the shape of the outer surface of the support column 20. The support column 20 is described by taking a cylindrical structure as an example.

[0035] The top end of the support column 20 extends above the shielding layer 11 for connection with the object to be tested.

[0036] When installing the support column 20, it is necessary to open a second mounting hole on the shielding layer 11, which causes the shielding layer 11 to be damaged. After the support column 20 passes through the second mounting hole, there is a gap between the shielding layer 11 and the outer wall of the support column 20. The gap position will cause electromagnetic signal leakage during the microwave darkroom test. Therefore, the shielding connector 30 is supported and sleeved on the outside of the support column 20 to eliminate the gap between the shielding layer 11 and the support column 20, thereby ensuring the electrical continuity of the shielding layer 11 and avoiding electromagnetic signal leakage.

[0037] At this time, the support column 20 can be optionally movably connected to the shielding layer 11; in order to further improve the stability of the support column 20, it is preferred that the support column 20 and the shielding layer 11 are welded, and the weld 21 between the two is used to achieve electrical continuity, thereby further ensuring the electrical continuity of the shielding layer 11.

[0038] At the same time, by providing the supporting shielding connector 30, it is possible to avoid the shielding effect of the weld 21 being reduced due to welding leaks, pores or cracks during the welding process, thereby meeting actual use requirements.

[0039] refer to Figure 2 and Figure 3 , further illustrating, the supporting shielding connector 30 includes a first shielding net 35 and a fastener 31, the fastener 31 and the first shielding net 35 are both sleeved on the outside of the supporting column 20, the first shielding net 35 is in close contact with the supporting column 20, and the first shielding net 35 is located between the fastener 31 and the shielding layer 11, so that the shielding layer 11 ensures electrical continuity through the first shielding net 35.

[0040] The first shielding mesh 35 can be selected as a copper mesh or a waveguide mesh.

[0041] The fastener 31 is used to ensure a stable and reliable connection between the first shielding net 35 and the support column 20. The fastener 31 can use gravity to cover the first shielding net 35 on the shielding layer 11. Preferably, the support column 20 is a bolt, and the corresponding fastener 31 is a nut, to ensure that the first shielding net 35 can reliably cover the gap between the support column 20 and the shielding layer 11, and the first shielding net 35 is connected between the support column 20 and the shielding layer 11.

[0042] In order to prevent the fastener 31 from driving the first shielding net 35 to rotate when rotating and tightening the first shielding net 35, thereby reducing the shielding effect, the supporting shielding connector 30 preferably also includes a flat pad 32, and the flat pad 32 is sleeved on the outer side of the support column 20. The outer diameter of the flat pad 32 is larger than the outer diameter of the fastener 31, and the outer diameter of the first shielding net 35 is larger than the outer diameter of the flat pad 32.

[0043] The flat pad layer 32 may be a gasket, and the material is preferably copper.

[0044] When in use, the flat pad 32 is located between the fastener 31 and the first shielding net 35. The flat pad 32 can be used to prevent the first shielding net 35 from rotating when the fastener 31 rotates, thereby ensuring the reliability of the connection of the first shielding net 35; it can also increase the extrusion range of the first shielding net 35, thereby ensuring the contact reliability of the first shielding net 35 and the shielding layer 11.

[0045] In order to further improve the reliability of the supporting shielding connector 30, the supporting shielding connector 30 preferably also includes a second shielding net 33. Similar to the first shielding net 35, the second shielding net 33 is sleeved on the outer side of the supporting column 20 and is in close contact with the supporting column 20. The second shielding net 33 is located between the first shielding net 35 and the flat pad 32, so as to further ensure the electrical continuity of the shielding layer 11.

[0046] The outer diameter of the first shielding net 35 is the same as the outer diameter of the second shielding net 33. The second shielding net 33 can be selected as a copper net or a waveguide net. Preferably, both the first shielding net 35 and the second shielding net 33 are copper nets or waveguide nets to improve versatility and facilitate installation, maintenance and replacement.

[0047] For the test requirements with high shielding requirements for microwave darkroom, it is preferred that the supporting shielding connector 30 also includes a filling block 34, which is sleeved on the outside of the support column 20, and the filling block 34 is located between the first shielding net 35 and the second shielding net 33. A filling cavity is opened inside the filling block 34, and the filling cavity is preferably coaxially arranged with the filling block 34. The inner diameter of the filling cavity is larger than the outer diameter of the support column 20. When the filling block 34 is installed on the support column 20, the filling cavity is wrapped around the outside of the support column 20, and the bottom of the filling cavity is connected to the first shielding net 35. At this time, a shielding interlayer 40 is filled between the inner wall of the filling cavity and the outer wall of the support column 20. The shielding interlayer 40 can be selected from a metal mesh, a waveguide window, an electromagnetic shielding coating, and a conductive adhesive. The bottom of the shielding interlayer 40 contacts the first shielding net 35. Under the action of the fastener 31, the shielding interlayer 40 squeezes the first shielding net 35 along its axial direction, and at the same time, the shielding interlayer 40 squeezes the support column 20 along its radial direction, thereby ensuring the electrical continuity of the shielding layer 11 and avoiding electromagnetic leakage, thereby meeting the actual test requirements of the microwave darkroom.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the present invention.

Claims

1. A microwave darkroom test support, characterized in that: It comprises a supporting base (10), a supporting column (20) and a supporting shielding connecting piece (30); A shielding layer (11) is sleeved on the outside of the support base (10); the top end of the support column (20) is located on the outside of the support base (10); the bottom end of the support column (20) passes through the shielding layer (11) and extends to the inside of the support base (10); the support shielding connector (30) is located on the outside of the shielding layer (11); and the support column (20) is connected to the shielding layer (11) via the support shielding connector (30).

2. The microwave darkroom test support according to claim 1, characterized in that: The support column (20) is welded to the shielding layer (11).

3. The microwave darkroom test support according to claim 1, characterized in that: The support column (20) is movably connected to the shielding layer (11).

4. The microwave darkroom test support according to claim 2 or 3, characterized in that: The supporting shielding connector (30) comprises a fastener (31) and a first shielding net (35), wherein the fastener (31) and the first shielding net (35) are both sleeved on the outside of the supporting column (20), the first shielding net (35) is in close contact with the outer surface of the supporting column (20), the first shielding net (35) is in contact with the upper surface of the shielding layer (11), the first shielding net (35) is located between the fastener (31) and the shielding layer (11), and the fastener (31) is movably connected to the supporting column (20).

5. The microwave darkroom test support according to claim 4, characterized in that: The support column (20) is a bolt, and the fastener (31) is a nut.

6. The microwave darkroom test support according to claim 4, characterized in that: The supporting shielding connector (30) further comprises a flat cushion layer (32), wherein the flat cushion layer (32) is sleeved on the outside of the supporting column (20), and the flat cushion layer (32) is located between the fastener (31) and the first shielding net (35).

7. The microwave darkroom test support according to claim 6, characterized in that: The flat cushion layer (32) is a gasket.

8. The microwave darkroom test support according to claim 6, characterized in that: The supporting shielding connector (30) further comprises a second shielding net (33), the second shielding net (33) being sleeved on the outside of the supporting column (20) and in close contact with the supporting column (20), and the second shielding net (33) being located between the first shielding net (35) and the flat cushion layer (32).

9. The microwave darkroom test support according to claim 8, characterized in that: The first shielding mesh (35) and the second shielding mesh (33) are both copper meshes or waveguide meshes.

10. The microwave darkroom test support according to claim 8, characterized in that: The supporting shielding connector (30) further comprises a filling block (34), the filling block (34) being sleeved on the outside of the supporting column (20), the filling block (34) being located between the second shielding net (33) and the first shielding net (35); a filling cavity is provided inside the filling block (34), the filling cavity is sleeved on the outside of the supporting column (20), a shielding interlayer (40) is filled between the filling cavity and the supporting column (20), and the shielding interlayer (40) is connected to the first shielding net (35).

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