Electromagnetic shielding waveguide window shielding performance scanning detection device
By designing a screw, a movable sleeve, and a fixing ring, the position of the electromagnetic shielding waveguide window placement frame can be adjusted and easily disassembled, solving the problem of fixed detection position and improving detection accuracy and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI SHUTAO METAL PRODUCTS CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-28
AI Technical Summary
In existing scanning and testing devices, the detection position of the electromagnetic shielding waveguide window is fixed, making it difficult to obtain multiple sets of shielding performance test data at different positions, resulting in poor accuracy of the test results.
By setting screws, moving sleeves, and fixing rings, the vertical position of the electromagnetic shielding waveguide window placement frame can be adjusted. The placement frame can be easily disassembled and assembled through the disassembly and assembly components. Combined with the signal connection of the signal generator and receiver, multiple sets of detection data can be acquired.
This improves the accuracy of electromagnetic shielding waveguide window shielding performance testing and simplifies the replacement process of the placement frame, thereby increasing the flexibility and efficiency of testing.
Smart Images
Figure CN224569158U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electromagnetic shielded waveguide window testing technology, specifically relating to an electromagnetic shielded waveguide window shielding performance scanning and testing device. Background Technology
[0002] Electromagnetic shielding waveguide windows are devices that utilize the high-pass filtering characteristics of waveguides to achieve electromagnetic shielding. Waveguides are simple tubular metal structures that exhibit the characteristics of high-pass filters, allowing signals above the cutoff frequency to pass through while blocking or attenuating signals below the cutoff frequency. By designing the waveguide so that the frequency of the interference signal falls within the cutoff region of the waveguide, the waveguide can play the role of electromagnetic shielding. During the production process of electromagnetic shielding waveguide windows, testing devices are usually used to scan and test their shielding performance.
[0003] However, most existing scanning and testing devices typically use a fixed frame inside the testing chamber for placing electromagnetic shielding waveguide windows. A signal generator mounted at the top of the chamber emits electromagnetic waves within a specific frequency range. These waves, after passing through the placed waveguide windows, are received by a receiver at the bottom of the chamber, thus scanning and testing the shielding performance of the waveguide windows. However, this method has a drawback: because the frame is usually fixed inside the chamber, the detection position of the waveguide windows between the signal generator and receiver is fixed, making it difficult to adjust the detection position. This prevents the acquisition of multiple sets of shielding performance data for the waveguide windows at different positions, leading to poor accuracy in the test results. Therefore, we propose a scanning and testing device for the shielding performance of electromagnetic shielding waveguide windows. Utility Model Content
[0004] The purpose of this invention is to provide an electromagnetic shielding waveguide window shielding performance scanning and testing device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetic shielding waveguide window shielding performance scanning and testing device, comprising a testing box and an electromagnetic shielding waveguide window placement frame, wherein a screw is fixedly connected inside the testing box, a movable sleeve is movably sleeved on the outside of the screw, and a fixing ring is threaded onto the outside of the screw, a mounting plate is fixedly connected to one side of the movable sleeve, a mounting groove is provided on the front of the mounting plate, a mounting block is fixedly connected to the side of the electromagnetic shielding waveguide window placement frame, a disassembly and assembly assembly is provided between the mounting plate and the mounting block, a signal generator is provided on the top of the testing box, and a receiver is fixedly installed at the bottom of the inner cavity of the testing box.
[0006] In a preferred embodiment, the front of the testing box is movably connected to a door via a hinge, and the bottom of the testing box is fixedly connected to a base frame, with braked rollers fixedly installed at the bottom of the base frame.
[0007] In a preferred embodiment, the fixed ring and the movable sleeve are in close contact, and the internal thread inside the fixed ring is adapted to the external thread outside the screw.
[0008] In a preferred embodiment, the disassembly assembly includes a slider and a fixing groove. The slider is movably fitted inside the mounting groove, and the fixing groove is formed on one side of the mounting block. A fixing pin is fixedly connected to one side of the slider. One end of the fixing pin passes through the mounting plate and extends into the fixing groove. A spring is movably fitted outside the fixing pin. The two ends of the spring are fixedly connected to the inner side of the mounting plate and one side of the slider, respectively. A lever is fixedly connected to the front of the slider, and the back of the lever contacts the front of the mounting plate.
[0009] In a preferred embodiment, the bottom end of the signal generator extends into the interior of the detection box, a controller is fixedly installed on the top of one side of the detection box, and an operation panel is provided on one side of the detection box. The operation panel and the detection box are movably connected by a damping shaft.
[0010] In a preferred embodiment, the input terminal of the signal generator is connected to the output terminal of the controller, the output terminal of the receiver is connected to the input terminal of the controller, and the controller and the operation panel are connected by a flexible wire.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This electromagnetic shielding waveguide window shielding performance scanning and testing device, by setting a screw, a movable sleeve, and a fixing ring, allows for easy adjustment of the position of the electromagnetic shielding waveguide window placement frame in the vertical direction during the shielding performance testing process. In other words, it can adjust the detection position of the electromagnetic shielding waveguide window body between the signal generator and the receiver. This enables the acquisition of multiple sets of shielding performance test data of the electromagnetic shielding waveguide window at different positions, thereby improving the accuracy of the test results.
[0013] This electromagnetic shielding waveguide window shielding performance scanning and testing device, by setting up a mounting plate, mounting groove, mounting block and disassembly assembly, can facilitate the disassembly and assembly of the electromagnetic shielding waveguide window placement frame during the replacement process. Moreover, the disassembly and assembly method is simple and convenient, thus bringing convenience to the replacement of the electromagnetic shielding waveguide window placement frame. Attached Figure Description
[0014] Figure 1This is a front view of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the detection box in this utility model.
[0016] Figure 3 In the structure of this utility model Figure 2 Enlarged view of point A;
[0017] Figure 4 This is a top view of the electromagnetic shielding waveguide window placement frame in the structure of this utility model.
[0018] In the diagram: 1. Detection box; 2. Base frame; 3. Electromagnetic shielded waveguide window placement frame; 4. Screw; 5. Moving sleeve; 6. Fixing ring; 7. Mounting plate; 8. Mounting groove; 9. Mounting block; 10. Disassembly assembly; 101. Slider; 102. Fixing groove; 103. Fixing pin; 104. Spring; 105. Toggle block; 11. Signal generator; 12. Receiver; 13. Controller; 14. Operation panel; 15. Damping shaft. Detailed Implementation
[0019] The present invention will be further described below with reference to the embodiments.
[0020] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.
[0021] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides an electromagnetic shielding waveguide window shielding performance scanning and testing device, including a testing box 1 and an electromagnetic shielding waveguide window placement frame 3. The front of the testing box 1 is movably connected to a box door via a hinge, and the bottom of the testing box 1 is fixedly connected to a base frame 2. The bottom of the base frame 2 is fixedly installed with braked rollers. The electromagnetic shielding waveguide window placement frame 3 consists of an outer frame and several crossbars, which are used to place the electromagnetic shielding waveguide window body to be scanned and tested.
[0022] In this embodiment, the scanning detection device can be pushed to make the rollers roll and drive the base frame 2 to move, so that the detection box 1 can move under the drive of the base frame 2, thereby facilitating the movement and use of the scanning detection device. When the scanning detection device moves to the working area, the brake pads on the rollers can be stepped on to fix the rollers, thereby improving the stability of the placement of the scanning detection device.
[0023] In the above solution, it should be noted that the brake roller is an existing product, and the specific structure and braking operation method of the brake roller are existing publicly available technologies, which will not be described in detail here.
[0024] Please see Figure 1 and Figure 2 The detection box 1 is internally fixedly connected to a screw 4, and a movable sleeve 5 is movably sleeved on the outside of the screw 4. A fixing ring 6 is threaded onto the outside of the screw 4. The fixing ring 6 and the movable sleeve 5 are in close contact. The internal thread of the fixing ring 6 is matched with the external thread of the screw 4. A mounting plate 7 is fixedly connected to one side of the movable sleeve 5. A mounting groove 8 is opened on the front of the mounting plate 7. A mounting block 9 is fixedly connected to the side of the electromagnetic shielding waveguide window placement frame 3. A signal generator 11 is set on the top of the detection box 1, and a receiver 12 is fixedly installed at the bottom of the inner cavity of the detection box 1. The bottom end of the signal generator 11 extends into the inside of the detection box 1. A controller 13 is fixedly installed on the top of one side of the detection box 1, and an operation panel 14 is set on one side of the detection box 1. The operation panel 14 and the detection box 1 are movably connected through a damping shaft 15. The input end of the signal generator 11 is connected to the output end of the controller 13. The output end of the receiver 12 is connected to the input end of the controller 13. The controller 13 and the operation panel 14 are connected through an elastic wire.
[0025] In this embodiment, when the box door is opened, a fixed ring 6 is rotated, causing the fixed ring 6 to rotate and move up and down outside the screw 4, causing the fixed ring 6 and the movable sleeve 5 to separate. Then, the movable sleeve 5 is pushed, causing the movable sleeve 5 to slide up and down outside the screw 4. The movable sleeve 5 will drive the electromagnetic shielding waveguide window placement frame 3 to move up and down, thereby facilitating the adjustment of the position of the electromagnetic shielding waveguide window placement frame 3 in the vertical direction. This can control the position of the electromagnetic shielding waveguide window body to be tested between the signal generator 11 and the receiver 12, realize the detection of the electromagnetic shielding waveguide window body at different positions, increase the detection result data, and thus improve the detection accuracy.
[0026] When the movable sleeve 5 moves to contact the previously moved fixed ring 6, the other fixed ring 6 is rotated, which also causes the fixed ring 6 to rotate and move up and down outside the screw 4, so that the fixed ring 6 and the movable sleeve 5 come into contact. This makes it easy to use the two fixed rings 6 to limit and fix the top and bottom of the movable sleeve 5 respectively, that is, to fix the position of the adjusted electromagnetic shielding waveguide window placement frame 3.
[0027] After the position of the electromagnetic shielding waveguide window placement frame 3 is adjusted, place the electromagnetic shielding waveguide window to be tested on top of the electromagnetic shielding waveguide window placement frame 3, close the box door, and use the operation panel 14 as needed to transmit command signals to the controller 13, so that the controller 13 controls the signal generator 11 to run and emit electromagnetic waves in a specific frequency range. These electromagnetic waves will be received by the receiver 12 after passing through the electromagnetic shielding waveguide window. The receiver 12 will analyze the received electromagnetic waves and transmit them to the controller 13. The controller 13 will then transmit the analysis results to the operation panel 14, which makes it convenient for staff to observe the shielding effect of the electromagnetic shielding waveguide window.
[0028] In the above scheme, it should be noted that: the inner side of the detection box 1 can be provided with an existing metal shielding layer, which can enhance the shielding effect of the detection box 1 itself, and the receiver 12 can be an existing spectrum analyzer. During the actual detection process of the electromagnetic shielded waveguide window, different models of existing signal generators 11, receivers 12, controllers 13 and operation panels 14 can be installed according to the detection needs. The specific structure and signal transmission analysis and processing principles of these existing products (signal generators 11, receivers 12, controllers 13 and operation panels 14) are all publicly disclosed technical means in this field, and will not be described in detail here.
[0029] Please see Figure 2 and Figure 3 A disassembly assembly 10 is provided between the mounting plate 7 and the mounting block 9. The disassembly assembly 10 includes a slider 101 and a fixing groove 102. The slider 101 is movably sleeved inside the mounting groove 8. The fixing groove 102 is opened on one side of the mounting block 9. A fixing pin 103 is fixedly connected to one side of the slider 101. One end of the fixing pin 103 passes through the mounting plate 7 and extends into the fixing groove 102. A spring 104 is movably sleeved on the outside of the fixing pin 103. The two ends of the spring 104 are fixedly connected to the inner side of the mounting plate 7 and one side of the slider 101, respectively. A lever 105 is fixedly connected to the front of the slider 101. The back of the lever 105 is in contact with the front of the mounting plate 7.
[0030] In this embodiment, when the electromagnetic shielding waveguide window placement frame 3 needs to be replaced, first pull the lever 105 outward horizontally, so that the slider 101 slides inside the mounting groove 8, and the slider 101 will drive the fixing pin 103 to move, so that one end of the fixing pin 103 moves out of the fixing groove 102, and the spring 104 will be stretched and deformed. Then lift the electromagnetic shielding waveguide window placement frame 3 upward, so that the mounting plate 7 and the mounting block 9 are separated, so that the electromagnetic shielding waveguide window placement frame 3 can be disassembled and replaced.
[0031] When the replaced electromagnetic shielding waveguide window placement frame 3 needs to be installed, repeat the above operation so that one end of the fixing pin 103 is flush with the side of the mounting plate 7, causing the spring 104 to stretch and deform. Then place the new electromagnetic shielding waveguide window placement frame 3 on the mounting plate 7 so that the mounting block 9 on the new electromagnetic shielding waveguide window placement frame 3 contacts the mounting plate 7, and release the lever 105. At this time, the stretched spring 104 needs to restore its elastic deformation and drive the slider 101 to slide inside the mounting groove 8. The slider 101 will drive the fixing pin 103 to move, so that the end of the fixing pin 103 is inserted into the fixing groove 102 of the mounting block 9, thereby facilitating the installation and fixing of the replaced electromagnetic shielding waveguide window placement frame 3.
[0032] The working principle and usage process of this utility model are as follows: First, open the box door and rotate a fixed ring 6 so that the fixed ring 6 rotates and moves up and down outside the screw 4, causing the fixed ring 6 and the movable sleeve 5 to separate. Then push the movable sleeve 5 so that the movable sleeve 5 slides up and down outside the screw 4, and the movable sleeve 5 will drive the electromagnetic shielding waveguide window placement frame 3 to move up and down, thereby facilitating the adjustment of the position of the electromagnetic shielding waveguide window placement frame 3 in the vertical direction.
[0033] Next, after the position of the electromagnetic shielding waveguide window placement frame 3 is adjusted, the electromagnetic shielding waveguide window to be tested is placed on top of the electromagnetic shielding waveguide window placement frame 3, and the box door is closed. Then, the operation panel 14 is used as needed to transmit command signals to the controller 13, so that the controller 13 controls the signal generator 11 to run and emit electromagnetic waves in a specific frequency range. These electromagnetic waves are received by the receiver 12 after passing through the electromagnetic shielding waveguide window. The receiver 12 analyzes the received electromagnetic waves and transmits them to the controller 13. The controller 13 then transmits the analysis results to the operation panel 14, which makes it convenient for staff to observe the shielding effect of the electromagnetic shielding waveguide window.
[0034] Finally, when the electromagnetic shielding waveguide window placement frame 3 needs to be replaced, first pull the lever 105 outward horizontally, so that the slider 101 slides inside the mounting groove 8, and the slider 101 will drive the fixing pin 103 to move, so that one end of the fixing pin 103 moves out of the fixing groove 102, and the spring 104 will be stretched and deformed. Then lift the electromagnetic shielding waveguide window placement frame 3 upward, so that the mounting plate 7 and the mounting block 9 are separated, thus enabling the electromagnetic shielding waveguide window placement frame 3 to be disassembled and replaced.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A scanning and testing device for the shielding performance of an electromagnetic shielded waveguide window, comprising a testing box (1) and an electromagnetic shielded waveguide window placement frame (3), characterized in that: The inside of the detection box (1) is fixedly connected to a screw (4), the outside of the screw (4) is movably sleeved with a movable sleeve (5), and the outside of the screw (4) is threaded with a fixing ring (6). A mounting plate (7) is fixedly connected to one side of the movable sleeve (5), and a mounting groove (8) is opened on the front of the mounting plate (7). A mounting block (9) is fixedly connected to the side of the electromagnetic shielding waveguide window placement frame (3). A disassembly assembly (10) is provided between the mounting plate (7) and the mounting block (9). A signal generator (11) is provided on the top of the detection box (1), and a receiver (12) is fixedly installed at the bottom of the inner cavity of the detection box (1).
2. The electromagnetic shielding waveguide window shielding performance scanning and testing device according to claim 1, characterized in that: The front of the testing box (1) is connected to a door via a hinge, and the bottom of the testing box (1) is fixedly connected to a base frame (2), with braked rollers fixedly installed at the bottom of the base frame (2).
3. The electromagnetic shielding waveguide window shielding performance scanning and testing device according to claim 1, characterized in that: The fixed ring (6) and the movable sleeve (5) are in close contact, and the internal thread inside the fixed ring (6) is compatible with the external thread outside the screw (4).
4. The electromagnetic shielding waveguide window shielding performance scanning and testing device according to claim 1, characterized in that: The disassembly and assembly assembly (10) includes a slider (101) and a fixing groove (102). The slider (101) is movably sleeved inside the mounting groove (8). The fixing groove (102) is opened on one side of the mounting block (9). A fixing pin (103) is fixedly connected to one side of the slider (101). One end of the fixing pin (103) passes through the mounting plate (7) and extends into the fixing groove (102). A spring (104) is movably sleeved on the outside of the fixing pin (103). The two ends of the spring (104) are fixedly connected to the inner side of the mounting plate (7) and one side of the slider (101), respectively. A lever (105) is fixedly connected to the front of the slider (101). The back of the lever (105) is in contact with the front of the mounting plate (7).
5. The electromagnetic shielding waveguide window shielding performance scanning and testing device according to claim 1, characterized in that: The bottom end of the signal generator (11) extends into the interior of the detection box (1). A controller (13) is fixedly installed on the top of one side of the detection box (1), and an operation panel (14) is provided on one side of the detection box (1). The operation panel (14) and the detection box (1) are movably connected by a damping shaft (15).
6. The electromagnetic shielding waveguide window shielding performance scanning and testing device according to claim 5, characterized in that: The input terminal of the signal generator (11) is connected to the output terminal of the controller (13), the output terminal of the receiver (12) is connected to the input terminal of the controller (13), and the controller (13) and the operation panel (14) are connected by a flexible wire.