Assembled and combined microwave darkroom

Abstract

The utility model relates to the technical field of communication testing, and discloses an assembled and combined microwave anechoic chamber which comprises a box body formed by connecting a plurality of splice plates, a testing chamber is formed in the box body, a box door communicated with the testing chamber is hinged to the front side of the box body, and the box door is hinged to the front side of the box body. The box door comprises an inner-layer door frame, an outer-layer door plate hinged to the outer side of the inner-layer door frame and a shielding module arranged between the inner-layer door frame and the outer-layer door plate, a high-frequency shielding net is arranged between every two adjacent splice plates, and a plurality of profile frames are arranged on the outer surface of the box door.

Description

Technical Field

[0001] The utility model relates to the technical field of communication testing, in particular to an assembled combined microwave darkroom. Background Art

[0002] The OTA test chamber is a test system based on far-field testing theory. It is primarily used for testing passive / active antennas, consumer electronics, radar, and automotive components. It covers a frequency range of 300MHz-90GHz with >80dB accuracy, providing a stable test environment for RF testing.

[0003] As chassis are increasingly used in electronic communications, testing, and industrial environments, the on-site environment is becoming increasingly complex, placing higher and higher demands on chassis design. Traditional darkroom testing chambers have low frequency bands, poor sealing performance, and integrally welded frames. This is costly, inconvenient for transportation and electroplating, prone to weld leaks, and has a low reuse rate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an assembled combined microwave darkroom, which can realize rapid assembly and assembly and disassembly and has a high reuse rate.

[0005] The technical solution of the present utility model is: an assembled combined microwave darkroom, comprising a box body and a box door module hinged on the box body, a test darkroom is provided in the box body, the box door module comprises an inner door frame and an outer door panel hinged on the outside of the inner door frame, the box body is composed of a plurality of combined splicing modules, the splicing modules are splicing plates, a high-frequency shielding net is provided between the splicing plates, the box door module is provided with a profile frame member on the splicing module, and reinforcing ribs are provided between the splicing plates and the profile frame.

[0006] It can be seen from the above scheme that the box body is composed of multiple dry splicing panels. The test darkroom is used to place test fixtures for testing wireless communication products and electronic products such as antennas and radars, which can be free from interference from clutter, thereby improving the test accuracy and efficiency of the equipment under test. The high-frequency shielding net is used to shield external electromagnetic waves, which is convenient for increasing the test frequency band. Rapid assembly and disassembly can be achieved through several splicing panels, and the shielding is stable. The splicing panels of the utility model can be combined according to the required length, which is convenient for transportation and saves costs.

[0007] The outer surface of the outer door panel is provided with a rotating handle, which is rotatably connected to an inner rotating handle on the inner side of the outer door panel via a connecting rod. A buckle is rotatably connected to the inner rotating handle. A locking block is provided on the outer surface of the inner door frame, and a locking arc groove is provided on the locking block to match the buckle. Thus, the rotating handle is used to open the door module on the box body. The rotating handle and the inner rotating handle are coaxially connected to achieve synchronous rotation. When closing the door, the inner rotating handle drives the buckle to rotate into the locking arc groove on the locking block to lock it, thereby locking the door module on the box body.

[0008] The shielding module includes a mounting bracket mounted around the inner door frame, two beryllium copper reed assemblies mounted on the mounting bracket, and a double-blade frame mounted around the outer door panel. The beryllium copper reed assembly includes two beryllium copper reeds positioned in surface contact with each other. The double-blade frame is equipped with two sets of blades, which correspond to the contact surfaces between the two opposing beryllium copper reeds. Closing the door causes the blades to squeeze between the two beryllium copper reeds, with both sides of the blades contacting the beryllium copper reeds, creating a double-layer compression that ensures the door's gap sealing performance.

[0009] The front side of the box is provided with a control panel module, which is equipped with control buttons. The upper end surface of the box is provided with a ventilation fan and a vent that communicates with the interior of the box. The vent is provided with a ventilation duct. The control panel module is electrically connected to the ventilation fan. It can be seen that the ventilation fan is used to exchange heat within the box, which can effectively reduce the temperature within the box, realize internal circulation heat dissipation, and have good heat dissipation effect, which can effectively maintain the temperature within the box and extend the service life of the test device.

[0010] LED lights are arranged in parallel and equidistantly on the top of the inner wall of the box, and the LED lights are electrically connected to the control panel module. It can be seen that the LED lights are used to supplement the light source, and the control panel module is used to realize the light source control inside the box.

[0011] The splicing plate is formed by bending a galvanized material. Therefore, it can be seen that the galvanized plate material used in the splicing plate has high shielding performance and good electrical conductivity.

[0012] The test chamber is provided with absorbing foam around its periphery and top as well as the inner wall of the outer door panel, so that the absorbing foam is used to absorb electromagnetic waves in the test chamber.

[0013] The front side of the box door is provided with a sloped lifting platform, which can facilitate the entry of heavier test equipment into the test darkroom. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a structural diagram of the box door;

[0017] Figure 4 This is a structural diagram of the door from another perspective;

[0018] Figure 5 It is a structural diagram of the shielding module;

[0019] Figure 6 It is a structural diagram of the high-frequency shielding net. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] like Figures 1 to 6 As shown, the utility model is an assembled microwave darkroom, comprising a box body 1 connected by a plurality of splicing plates 6, the splicing plates 6 being formed by bending galvanized material, a test chamber being formed in the box body 1, a door 2 connected to the test chamber being hinged on the front side of the box body 1, the door 2 comprising an inner door frame 3, an outer door panel 4 hinged on the outside of the inner door frame 3, and a shielding module 5 arranged between the inner door frame 3 and the outer door panel 4, a high-frequency shielding net 7 is arranged between two adjacent groups of the splicing plates 6, and a plurality of profile frames 9 are provided on the outer surface of the splicing plates 6.

[0022] In this embodiment, the size of the splicing plate 6 is 1800*1000 mm, and the material thickness is 1.5 mm. The size of the profile frame 9 matches 100mm and 80mm, with high installation consistency and strong reproducibility. The high-frequency shielding net 7 is a non-ferromagnetic metal material with conductivity and ductility. A fire alarm module is provided on the front side of the box door 2. The profile frame 9 splices several splicing plates 6 together horizontally or vertically on the side of the box body 1. The profile frame 9 is obliquely reinforced on the top of the box body 1. The splicing plates 6 and the profile frame 9 are connected with reinforcing ribs to ensure the stability of the box assembly. At the same time, the reinforcing ribs can also be installed together with the ground bolts to further improve the seismic resistance level. Several interfaces corresponding to test instruments and controllers are provided on the front side of the box body 1. The data cables and connectors connected to the outside of the box body 1 use filters with high shielding to prevent signals from leaking through the cables, and can effectively isolate external signals, so that the test fixture can perform radio frequency signal testing on the tested product without being interfered with by external signals, providing a shielding environment for the signal reception performance test of the tested piece.

[0023] The shielding module 5 includes a mounting frame 51 mounted around the inner door frame 3, a beryllium copper reed assembly mounted on the mounting frame 51, and a double-blade frame 52 mounted around the outer door panel 4. The beryllium copper reed assembly includes two beryllium copper reeds 53 arranged in surface contact with each other. The double-blade frame 52 is provided with a blade 521, which corresponds to the contact surface between the two opposing beryllium copper reeds 53. In this embodiment, the outer ends of the beryllium copper reeds 53 are restrained by gaskets 54 on the inner wall of the mounting slot of the mounting frame 51. The beryllium copper reeds 51 are arranged in an arched shape.

[0024] A rotating handle 41 is provided on the outer surface of the outer door panel 4, and the rotating handle 41 is rotatably connected to an inner rotating handle 42 on the inner side of the outer door panel 4 through a connecting rod. A buckle 43 is rotatably connected to the inner rotating handle 42, and a locking block 31 is provided on the outer surface of the inner door frame 3. A locking arc groove 311 adapted to the buckle 43 is provided on the locking block 31.

[0025] A control panel module 11 is provided on the front side of the housing 1. A ventilation fan 12 and a vent 13 communicating with the interior of the housing 1 are provided on the upper end surface of the housing 1. A ventilation duct 131 is provided on the vent 13. The control panel module 11 is electrically connected to the ventilation fan 12. In this embodiment, the control panel module 11 is provided with control buttons electrically connected to the ventilation fan 12.

[0026] LED lights 14 are equidistantly arranged in parallel on the top of the inner wall of the box 1 and are electrically connected to the control panel module 11. Absorbent foam is installed around the perimeter and top of the test chamber, as well as on the inner wall of the outer door panel 4. A ramp lift 21 is installed in front of the door 2. In this embodiment, the absorbing foam is arranged in a pyramidal shape and is attached to the perimeter and top of the test chamber to prevent microwave signal reflection.

[0027] The workflow of the present invention is as follows: first, the product to be tested is installed on the fixture inside the test chamber, and the door 2 is closed manually by rotating the handle 41, driving the inner rotating handle 42 and the buckle 43 to rotate into the locking arc groove 311 for locking. When closing the door, the blade 521 is clamped between the two contacting beryllium copper springs 53. The beryllium copper springs 53 are compressed to achieve the sealing of the door 2 on the box body 1, so that the test chamber forms a closed metal cavity. The shielding module 5 is used to prevent leakage. The software operates the control device to run the test. After the test is completed, the door 2 is opened and the product is removed.

[0028] Finally, it should be emphasized that the above description is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled microwave darkroom, characterized by: The invention comprises a box body (1) formed by connecting a plurality of splicing plates (6), wherein a test chamber is formed in the box body (1), a box door (2) connected to the test chamber is hinged on the front side of the box body (1), the box door (2) comprises an inner door frame (3), an outer door panel (4) hinged on the outside of the inner door frame (3), and a shielding module (5) arranged between the inner door frame (3) and the outer door panel (4), a high-frequency shielding net (7) is arranged between two adjacent groups of the splicing plates (6), and the box door (2) is provided with a plurality of profile frames (9) on the outer surface of the splicing plates (6).

2. The assembled microwave darkroom according to claim 1, characterized in that: A rotating handle (41) is provided on the outer surface of the outer door panel (4), and the rotating handle (41) is rotatably connected to an inner rotating handle (42) on the inner side of the outer door panel (4) through a connecting rod, and a buckle (43) is rotatably connected to the inner rotating handle (42). A locking block (31) is provided on the outer surface of the inner door frame (3), and a locking arc groove (311) adapted to the buckle (43) is provided on the locking block (31).

3. The assembled microwave darkroom according to claim 1, characterized in that: The shielding module (5) comprises a mounting frame (51) mounted around the inner door frame (3), a beryllium copper reed group arranged on the mounting frame (51), and a double-blade frame (52) arranged around the outer door panel (4), wherein the beryllium copper reed group comprises two beryllium copper reeds (53) arranged in surface contact with each other, and a blade (521) is provided on the double-blade frame (52), wherein the blade (521) corresponds to the contact surface between the two beryllium copper reeds (53) arranged in surface contact with each other.

4. The assembled microwave darkroom according to claim 1, characterized in that: A control panel module (11) is provided on the front side of the box (1), and a ventilation fan (12) and a vent (13) communicating with the interior of the box (1) are provided on the upper end surface of the box (1), a ventilation duct (131) is provided on the vent (13), and the control panel module (11) is electrically connected to the ventilation fan (12).

5. The assembled microwave darkroom according to claim 4, characterized in that: LED lights (14) are arranged in parallel and equidistantly on the top of the inner wall of the box (1), and the LED lights (14) are electrically connected to the control panel module (11).

6. The assembled microwave darkroom according to claim 1, characterized in that: Wave-absorbing foam (10) is provided around and on the top of the test chamber and on the inner wall of the outer door panel (4).

7. The assembled microwave darkroom according to claim 1, characterized in that: The splicing plate (6) is formed by bending galvanized material.

8. The assembled microwave darkroom according to claim 1, characterized in that: A slope lifting platform (21) is provided on the front side of the box door (2).

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