Electromagnetic compatibility loop test device

Abstract

The utility model provides a kind of electromagnetic compatibility annular testing device, belong to electronic equipment technical field, it solves the current electromagnetic compatibility testing device and the range of adjustable position is smaller, because the propagation characteristic of electromagnetic wave is influenced by distance, so smaller adjustment range can lead to test result is not ideal, cannot fully reflect the technical problem of the electromagnetic compatibility performance of equipment in actual use environment.A kind of electromagnetic compatibility annular testing device, including test bin, two support rods are fixedly connected in test bin interior, the same slide is slidably covered on the surface of two support rods, two limit posts are fixedly connected on the top of slide, the same support plate is slidably covered on the surface of two limit posts, moving mechanism for moving support plate is equipped on the side of slide, multiple supporting plates are fixedly connected on the surface of two lifting plates close to the side of bidirectional screw rod.In the utility model, through the setting of support plate, it can be ensured that device can drive equipment to adjust in a large range.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, and relates to electromagnetic compatibility, specifically an electromagnetic compatibility ring test device. Background Technology

[0002] An electromagnetic compatibility (EMC) ring test chamber is a device used to evaluate the performance of electronic equipment in an electromagnetic environment, ensuring that it does not cause unacceptable interference to other devices during normal operation. This device employs a closed-loop structure, providing a sealed testing environment to reduce external electromagnetic noise. It supports various testing methods such as radiated emissions and immunity testing and is often equipped with automated systems to improve testing efficiency. EMC testing of electronic equipment is a crucial step in the design and production process to avoid legal issues and safety hazards, ensuring product compliance in the market.

[0003] However, some existing electromagnetic compatibility (EMC) ring test devices require adjustment of the positional relationship between the electromagnetic wave generator and the device being tested. However, the current EMC test devices have a limited range of adjustable positions. Since the propagation characteristics of electromagnetic waves are affected by distance, a small adjustment range may lead to unsatisfactory test results, which cannot fully reflect the EMC performance of the device in the actual use environment. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electromagnetic compatibility (EMC) ring test device. The technical problem this invention aims to solve is that current EMC test devices have a limited range of adjustable positions. Because the propagation characteristics of electromagnetic waves are affected by distance, a small adjustment range may lead to unsatisfactory test results, failing to fully reflect the EMC performance of the equipment in actual use environments.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An electromagnetic compatibility (EMC) ring test device includes a test chamber. Two support rods are fixedly connected inside the test chamber. A common sliding plate is slidably fitted onto the surfaces of the two support rods. Two limiting posts are fixedly connected to the top of the sliding plate. A common support plate is slidably fitted onto the surfaces of the two limiting posts. A moving mechanism for moving the support plate is provided on one side of the sliding plate. Lifting plates are provided on both sides of the support plate. Multiple support plates are fixedly connected to the surfaces of the two lifting plates near the bidirectional lead screw, and these support plates are configured to cooperate with the support plate. A sliding groove is formed on the surface of the sliding plate near the support plate, and the support plate is slidably connected inside the sliding groove. A lifting mechanism for lifting the support plates is provided at the top of both lifting plates. The support plates ensure that the device can drive the equipment to perform a wide range of adjustments.

[0006] As a further embodiment of this utility model, the moving mechanism includes a door, a door panel rotatably connected to one side of the door, a sealing gasket fixedly connected to the surface of the support plate near the door, and the sealing gasket and the door are mutually fitted together, a support block is fixedly sleeved on the surface of each of the two support rods near the door, a second limiting rod is fixedly connected between the two support blocks, two connecting ropes are slidably connected to the bottom of the second limiting rod, one end of each of the two connecting ropes is fixedly connected to one side of the slide plate, and the other end of each of the two connecting ropes is fixedly connected to one side of the door panel, a spring is sleeved on the surface of each of the two support rods, one end of each of the two springs is fixedly connected to one side of the support block, and the other end of each of the two springs is fixedly connected to one side of the slide plate. The support plate can be moved by the connecting ropes.

[0007] As a further embodiment of this utility model, the lifting mechanism includes two first limiting rods, both of which are fixedly connected inside the test chamber. A bidirectional lead screw is provided between the two first limiting rods, and the bidirectional lead screw is rotatably connected inside the test chamber. The lifting plate is slidably sleeved on the surfaces of the two first limiting rods and the bidirectional lead screw. A first lead screw nut is provided inside the lifting plate on the side near the bidirectional lead screw, and the first lead screw nut cooperates with the bidirectional lead screw. A top plate is slidably sleeved on the surfaces of the two first limiting rods and the bidirectional lead screw away from the lifting plate. An electromagnetic wave generator is provided at the bottom of the top plate. A second lead screw nut is provided inside the top plate on the side near the bidirectional lead screw, and the second lead screw nut cooperates with the bidirectional lead screw. A second synchronous pulley is fixedly sleeved on the top of the bidirectional lead screw. A motor is fixedly connected to the top of the test chamber on the side near the bidirectional lead screw. The output shaft of the motor is fixedly connected to a first synchronous pulley through a coupling. The surfaces of the first and second synchronous pulleys are sleeved with the same synchronous belt.

[0008] The beneficial effects of this utility model are as follows: 1. This utility model adopts a technical solution of moving the equipment upward by supporting the plate, which ensures that the device can move the equipment within a wide range of adjustment. This effectively solves the problem that the current electromagnetic compatibility testing devices have a small adjustable range. Because the propagation characteristics of electromagnetic waves are affected by distance, a small adjustment range may lead to unsatisfactory test results and fail to fully reflect the electromagnetic compatibility performance of the equipment in the actual use environment. During the test, if the distance between the equipment and the electromagnetic wave generator is too large, the motor can be started. Two bidirectional lead screws are installed inside the test chamber, and both bidirectional lead screws are connected to the motor via a synchronous belt. When the motor starts, both bidirectional lead screws will rotate. Lifting plates are fitted at the bottom of both bidirectional lead screws, and the lifting plates are connected to the bidirectional lead screws via the first lead screw nut. When the bidirectional lead screws rotate, the two lifting plates will move upward synchronously. A support plate is installed on one side of each lifting plate, and the support plate is located at the bottom of the support plate. Therefore, when the lifting plate moves the support plate upward, the support plate will also move synchronously, thereby shortening the distance between the equipment and the electromagnetic wave generator. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic compatibility ring test device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of an electromagnetic compatibility ring test device proposed in this utility model; Figure 3 This is a schematic diagram of the lifting mechanism of an electromagnetic compatibility ring test device proposed in this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 for Figure 3 Enlarged structural diagram at point B in the diagram; Figure 6 This is a schematic diagram of the moving mechanism of an electromagnetic compatibility ring test device proposed in this utility model; Figure 7 for Figure 6 A magnified structural diagram at point C in the diagram.

[0010] In the diagram: 1. Test chamber; 2. Support plate; 3. Two-way lead screw; 4. Motor; 5. Door panel; 101. Chamber door; 201. Support rod; 202. Support block; 203. Slide plate; 204. Slide groove; 205. Limiting post; 206. Spring; 301. First limiting rod; 302. Lifting plate; 303. First lead screw nut; 304. Support plate; 401. First synchronous pulley; 402. Second synchronous pulley; 403. Synchronous belt; 404. Top plate; 405. Second lead screw nut; 406. Electromagnetic wave generator; 501. Sealing gasket; 502. Second limiting rod; 503. Connecting rope. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] Reference Figure 1 - Figure 7 An electromagnetic compatibility (EMC) ring test device includes a test chamber 1. Two support rods 201 are fixedly connected inside the test chamber 1. A common sliding plate 203 is slidably fitted onto the surface of the two support rods 201. Two limiting posts 205 are fixedly connected to the top of the sliding plate 203. A common support plate 2 is slidably fitted onto the surface of the two limiting posts 205. A moving mechanism for moving the support plate 2 is provided on one side of the sliding plate 203. Lifting plates 302 are provided on both sides of the support plate 2. Multiple support plates 304 are fixedly connected to the surface of each lifting plate 302 near the bidirectional lead screw 3, and the multiple support plates 304 are configured to cooperate with the support plate 2. A groove 204 is formed on the surface of the sliding plate 203 near the support plates 304. The support plate 304 allows the support plate 2 to move upwards, and it is slidably connected inside the groove 204. A lifting mechanism for lifting the support plates 304 is provided at the top of each lifting plate 302. The support plate 2 ensures that the device can drive the equipment to make a wide range of adjustments.

[0013] Preferably, the moving mechanism includes a door 101, a door panel 5 rotatably connected to one side of the door 101, a sealing gasket 501 fixedly connected to the surface of the support plate 2 near the door 101, and the sealing gasket 501 and the door 101 are mutually cooperated. Support blocks 202 are fixedly sleeved on the surface of the two support rods 201 near the door 101. The same second limiting rod 502 is fixedly connected between the two support blocks 202. Two connecting ropes 503 are slidably connected to the bottom of the second limiting rod 502. The second limiting rod 502 can constrain the connecting ropes 503. One end of each connecting rope 503 is fixedly connected to one side of the slide plate 203, and the other end of each connecting rope 503 is fixedly connected to one side of the door panel 5. Springs 206 are sleeved on the surface of each support rod 201. One end of each spring 206 is fixedly connected to one side of the support block 202, and the other end of each spring 206 is fixedly connected to one side of the slide plate 203. The support plate 2 can be moved by the connecting ropes 503.

[0014] Preferably, the lifting mechanism includes two first limiting rods 301, both of which are fixedly connected to the inside of the test chamber 1. A common bidirectional lead screw 3 is provided between the two first limiting rods 301, and the bidirectional lead screw 3 is rotatably connected to the inside of the test chamber 1. A lifting plate 302 is slidably sleeved on the surfaces of the two first limiting rods 301 and the bidirectional lead screw 3. A first lead screw nut 303 is provided inside the lifting plate 302 on the side near the bidirectional lead screw 3, and the first lead screw nut 303 and the bidirectional lead screw 3 are mutually cooperated. A common lead screw nut 303 is slidably sleeved on the surfaces of the two first limiting rods 301 and the bidirectional lead screw 3 on the side away from the lifting plate 302. The top plate 404 has an electromagnetic wave generator 406 at its bottom. A second lead screw nut 405 is installed inside the top plate 404 near the double lead screw 3, and the second lead screw nut 405 cooperates with the double lead screw 3. A second synchronous pulley 402 is fixedly sleeved on the top of the double lead screw 3. A motor 4 is fixedly connected to the top of the test chamber 1 near the double lead screw 3. The output shaft of the motor 4 is fixedly connected to a first synchronous pulley 401 through a coupling. The same synchronous belt 403 is sleeved on the surface of the first synchronous pulley 401 and the second synchronous pulley 402. The double lead screw 3 allows the support plate 304 to be raised and lowered.

[0015] Working principle: In use, first open the door panel 5 with one hand. Inside the test chamber 1, a support plate 2 is installed. The support plate 2 is connected to the sliding plate 203 via two limiting posts 205. Two connecting ropes 503 are installed on one side of the sliding plate 203, and the other ends of the two connecting ropes 503 are connected to the door panel 5. Thus, when the door panel 5 is opened, the sliding plate 203 will move the support plate 2. Because a second limiting rod 502 is set on the side near the door panel 5, and the second limiting rod 502 is connected to the connecting ropes 503... The 03 mechanism works in conjunction with the support plate 2, ensuring the connecting rope 503 can move normally. After the support plate 2 is moved out, the equipment to be tested is placed on the support plate 2, and then the door plate 5 is reset. Two springs 206 are installed on one side of the sliding plate 203, so when the door plate 5 is reset, the sliding plate 203 will also drive the support plate 2 to reset. During the test, if the distance between the equipment and the electromagnetic wave generator 406 is too large, the motor 4 can be started. Two bidirectional lead screws 3 are installed inside the test chamber 1, and the two bidirectional lead screws 3... Both lead screws 3 are connected to the motor 4 via a synchronous belt 403. When the motor 4 starts, both lead screws 3 will rotate. A lifting plate 302 is fitted at the bottom of each of the two lead screws 3, and the lifting plate 302 is connected to the lead screw 3 via a first lead screw nut 303. Therefore, when the lead screw 3 rotates, the two lifting plates 302 will move upwards synchronously. A support plate 304 is installed on one side of each lifting plate 302, and the support plate 304 is located at the bottom of the support plate 2. Therefore, when the lifting plate 302 rotates... When the movable support plate 304 moves upward, the support plate 2 also moves synchronously, thereby shortening the distance between the equipment and the electromagnetic wave generator 406. A top plate 404 is also fitted on the top of the two bidirectional lead screws 3, and the top plate 404 is connected to the bidirectional lead screws 3 through the second lead screw nut 405. The electromagnetic wave generator 406 is installed at the bottom of the top plate 404, so that when the support plate 2 moves upward, the electromagnetic wave generator 406 will also move downward, thereby ensuring that the distance between the equipment and the electromagnetic wave generator 406 can be better adjusted.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electromagnetic compatibility ring test device, comprising a test chamber (1), characterized in that, The test chamber (1) is fixedly connected to two support rods (201). The same slide plate (203) is slidably sleeved on the surface of the two support rods (201). The top of the slide plate (203) is fixedly connected to two limiting posts (205). The same support plate (2) is slidably sleeved on the surface of the two limiting posts (205). A moving mechanism for moving the support plate (2) is provided on one side of the slide plate (203). Lifting plates (302) are provided on both sides of the support plate (2). Multiple trays (304) are fixedly connected on the surface of the two lifting plates (302) near the double-acting screw (3). The multiple trays (304) are all configured to cooperate with the support plate (2). A groove (204) is opened on the surface of the slide plate (203) near the tray (304). The tray (304) is slidably connected inside the groove (204). The top of the two lifting plates (302) is provided with a lifting mechanism for lifting the tray (304).

2. The electromagnetic compatibility ring test device according to claim 1, characterized in that, The moving mechanism includes a door (101), a door panel (5) is rotatably connected to one side of the door (101), a sealing gasket (501) is fixedly connected to the surface of the support plate (2) near the door (101), and the sealing gasket (501) and the door (101) are configured to cooperate with each other. Support blocks (202) are fixedly sleeved on the surface of the two support rods (201) near the door (101), and the same second limiting rod (502) is fixedly connected between the two support blocks (202). Two connecting ropes (503) are slidably connected to the bottom of the second limiting rod (502).

3. The electromagnetic compatibility ring test device according to claim 2, characterized in that, One end of each of the two connecting ropes (503) is fixedly connected to one side of the slide plate (203), and the other end of each of the two connecting ropes (503) is fixedly connected to one side of the door panel (5). Springs (206) are fitted on the surface of each of the two support rods (201). One end of each of the two springs (206) is fixedly connected to one side of the support block (202), and the other end of each of the two springs (206) is fixedly connected to one side of the slide plate (203).

4. The electromagnetic compatibility ring test device according to claim 1, characterized in that, The lifting mechanism includes two first limiting rods (301), both of which are fixedly connected to the inside of the test chamber (1). A bidirectional lead screw (3) is provided between the two first limiting rods (301), and the bidirectional lead screw (3) is rotatably connected to the inside of the test chamber (1). The lifting plate (302) is slidably sleeved on the surfaces of the two first limiting rods (301) and the bidirectional lead screw (3).

5. The electromagnetic compatibility ring test device according to claim 4, characterized in that, The lifting plate (302) has a first screw nut (303) inside the side near the bidirectional screw (3), and the first screw nut (303) and the bidirectional screw (3) are configured to cooperate with each other. The two first limit rods (301) and the bidirectional screw (3) are slidably fitted with the same top plate (404) on the side away from the lifting plate (302). An electromagnetic wave generator (406) is provided at the bottom of the top plate (404), and a second screw nut (405) is provided inside the top plate (404) on the side near the bidirectional screw (3).

6. The electromagnetic compatibility ring test device according to claim 5, characterized in that, The second lead screw nut (405) and the bidirectional lead screw (3) are configured to cooperate with each other. The top of the bidirectional lead screw (3) is fixedly fitted with a second synchronous pulley (402). The top of the test chamber (1) near the bidirectional lead screw (3) is fixedly connected to a motor (4). The output shaft of the motor (4) is fixedly connected to a first synchronous pulley (401) through a coupling. The surfaces of the first synchronous pulley (401) and the second synchronous pulley (402) are fitted with the same synchronous belt (403).

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