An adjustment device for EMC testing

Abstract

This application belongs to the field of EMC testing technology, and particularly relates to an adjustment device for EMC testing, including an EMC test bench. A circular groove is formed on the top of the EMC test bench, and an angle adjustment shaft is rotatably mounted at the center of the circular groove. The top of the angle adjustment shaft extends out of the circular groove and forms a rectangular slot, within which a limit bracket is slidably connected. The top of the limit bracket extends upward and is fixedly connected to a device positioning plate, which is used to fix the device under test. In this invention, the orientation can also be adjusted before testing. When the servo motor is turned on, it drives the drive gear to rotate. Under the meshing transmission of the servo motor and the adjustment gear ring, the angle adjustment shaft drives the limit bracket to rotate, thereby moving the orientation of the device positioning plate to change the orientation of the device under test. Furthermore, due to the variability of the installation position of the device under test, the adjustment of the device's position is more comprehensive and covers a wider range.

Description

Technical Field

[0001] This invention relates to an EMC testing apparatus, and more specifically to an adjustment device for EMC testing. Background Technology

[0002] EMC testing, also known as electromagnetic compatibility, refers to the comprehensive evaluation of the electromagnetic interference level and immunity of electronic products. It is one of the most important indicators of product quality. EMC measurement consists of a test site and test instruments. The purpose of EMC testing is to detect the impact of electromagnetic radiation generated by electrical products on the human body, public power grids, and other normally functioning electrical products. However, in current technology, the device under test (DUT) needs to be fixed in place using fixtures during the testing process. While some common fixtures can effectively limit and fix the DUT, the operating platform is usually directly fixed to the test device with bolts. Consequently, the operating platform angle is not easily adjustable according to the user's or the DUT's needs, making it inconvenient to use flexibly during testing. Summary of the Invention

[0003] The main objective of this disclosure is to provide an adjustment device for EMC testing, so as to effectively solve the problems raised by the inventors in the above-mentioned background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] An adjustment device for EMC testing includes an EMC test bench. The top of the EMC test bench has a circular groove, and an angle adjustment shaft is rotatably installed at the center of the circular groove. The top of the angle adjustment shaft extends out of the circular groove and has a rectangular slot. A limit bracket is slidably connected in the rectangular slot. The top of the limit bracket extends upward and is fixedly connected to a device positioning plate, and the device positioning plate is used to fix the device to be tested.

[0006] An annular inner guide rail is fixedly installed in a circular groove, and a first annular telescopic groove is provided at the top of the annular inner guide rail. A lifting rail is slidably installed in the first annular telescopic groove, and the top of the lifting rail extends out of the first annular telescopic groove.

[0007] An annular outer guide rail is fixedly installed in a circular groove, and a second annular telescopic groove is provided at the top of the annular outer guide rail. A second lifting rail is slidably installed in the second annular telescopic groove. The top of the second lifting rail extends out of the second annular telescopic groove, and a limit ring is provided at the top of both the second lifting rail and the first lifting rail. The bottom of the equipment positioning plate is movably connected in the limit ring.

[0008] A rotating mechanism, used to drive the angle adjustment shaft to rotate;

[0009] A lifting mechanism is used to drive the lifting rail one and the lifting rail two to move up and down.

[0010] A test equipment positioning mechanism is mounted on a device positioning plate and is used to fix the device to be tested.

[0011] The platform support leg is fixedly installed on the bottom of the EMC test bench.

[0012] Preferably, the bottom of the equipment positioning plate is equipped with two supporting sliding mechanisms. The supporting sliding mechanism includes a mounting frame and a load-bearing pulley. The mounting frame is fixedly installed at the bottom of the equipment positioning plate, and the load-bearing pulley is rotatably installed at the lower end of the mounting frame. The two load-bearing pulleys are respectively slidably connected in the limiting rings on the lifting rail one and the lifting rail two.

[0013] Preferably, the rotating mechanism includes an adjusting gear ring, a servo motor, and a drive gear. The adjusting gear ring is fixedly mounted on the surface of the angle adjusting shaft, the servo motor is fixedly mounted on the bottom of the circular groove, and the output end of the servo motor is fixedly connected to the drive gear, which meshes with the adjusting gear ring.

[0014] Preferably, the lifting mechanism includes a side fixed seat, a Z-axis lead screw, and a threaded engagement seat. Side fixed seats are fixedly installed on both sides of the EMC test bench, with a Z-axis lead screw rotatably mounted between the two side fixed seats on the same side. Threaded engagement seats are threaded onto both Z-axis lead screws, and a drive rod is fixedly connected to the side of each threaded engagement seat. A movable opening is provided on the side of the EMC test bench. Sliding openings are provided on the sides of both the inner and outer annular guide rails. The drive rod is slidably connected within the movable opening and the sliding opening, and it is fixedly connected to the lifting rail two and the lifting rail one. A servo motor two is fixedly installed on the support leg of the bench, and the output end of the servo motor two is fixedly connected to one of the Z-axis lead screws. Sprockets are fixedly installed on both Z-axis lead screws, and the two sprockets are connected by a transmission chain.

[0015] Preferably, the positioning mechanism of the testing equipment includes a slide groove, a limiting slide column, a propulsion block, and a clamping positioning plate. The top of the positioning plate has four slide grooves arranged in a cross shape. A limiting slide column is fixedly installed in each slide groove. The propulsion block is slidably installed on the limiting slide column and slidably connected in the slide groove. The clamping positioning plate is fixedly installed on the top of the propulsion block and is located outside the slide groove. An installation block is fixedly installed on the clamping positioning plate, and a rotating shaft is rotatably installed on the installation block. The bottom end of the rotating shaft extends into the slide groove and is fixedly installed with a traveling gear. A parallel rack parallel to the limiting slide column is fixedly installed in the slide groove, and the parallel rack passes through a through hole inside the propulsion block. The traveling gear meshes with the parallel rack. A quick-travel handle is fixedly installed at the top of the rotating shaft.

[0016] Preferably, the limiting bracket is adapted to the rectangular slot.

[0017] Preferably, the load-bearing pulley rolls on the inner bottom wall of the limiting ring opening.

[0018] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0019] (i) In this application, the device to be tested is placed on the device positioning plate, and each quick-traverse handle is rotated to make the traveling gear rotate and move forward along the parallel rack, which in turn drives each push block to move together, that is, each clamping positioning plate moves together and fixes the device to be tested, so as to avoid loosening during the test and affect the test, and can fix devices to be tested of different sizes.

[0020] (ii) In this application, the orientation can also be adjusted before testing. Once the servo motor is turned on, it drives the drive gear to rotate. Under the meshing transmission of the servo motor and the adjusting gear ring, the angle adjustment shaft drives the limit bracket to rotate, thereby moving the orientation of the equipment positioning plate to change the orientation of the equipment to be tested. Moreover, due to the variability of the installation position of the equipment to be tested by the testing equipment positioning mechanism, the adjustment of the position of the equipment to be tested is more comprehensive and has a wider range.

[0021] (III) In this application, the second servo motor is turned on, which drives a Z-axis lead screw to rotate. Under the transmission of the sprocket and the transmission chain, the two Z-axis lead screws rotate, and then the threaded engagement seat drives the drive rod to move, so that the first and second lifting rails can move up and down, thereby driving the limit bracket to move up and down in the rectangular slot, without affecting the rotation of the limit bracket driven by the angle adjustment shaft, resulting in better performance. Attached Figure Description

[0022] Figure 1 The figure shown is a cross-sectional view of the EMC testing adjustment device provided by the present invention.

[0023] Figure 2 As shown Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 The figure shown is a top view of the EMC testing adjustment device provided by the present invention.

[0025] Figure 4 As shown Figure 1 A schematic diagram of the equipment positioning plate after it has risen;

[0026] Figure 5 As shown Figure 4 A schematic diagram of a local structure in the image;

[0027] Figure 6 The image shown is a top view of the connection between the two sprockets and the drive chain.

[0028] Figure 7 As shown Figure 3 A schematic diagram of the positioning plate of the equipment after rotation;

[0029] Figure 8 As shown Figure 7 A schematic diagram after removing the equipment positioning plate;

[0030] Figure 9 As shown Figure 1 A schematic diagram of a local structure in the image;

[0031] Figure 10 As shown Figure 3 A schematic diagram of a local structure.

[0032] icon:

[0033] 1-EMC test bench; 101-Inner annular guide rail; 102-Outer annular guide rail; 103-Lifting rail one; 104-Lifting rail two; 105-Drive rod; 106-Moving port;

[0034] 2-Angle adjustment shaft; 201-Adjusting gear ring; 202-Servo motor one; 203-Drive gear;

[0035] 3-Limit insert;

[0036] 4-Equipment positioning plate; 401-Mounting bracket; 402-Bearing pulley;

[0037] 5-Side fixed seat; 501-Z-axis lead screw; 502-Threaded engagement seat; 503-Servo motor II; 504-Sprocket; 505-Transmission chain;

[0038] 6- Testing equipment positioning mechanism; 601- Slide groove; 602- Limiting slide column; 603- Push block; 604- Clamping positioning plate; 605- Mounting block; 606- Traveling gear; 607- Parallel rack; 608- Quick-traverse handle;

[0039] 7-unit support legs. Detailed Implementation

[0040] 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 only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-10 The present invention provides the following embodiments:

[0042] An adjustment device for EMC testing includes an EMC test bench 1. The top of the EMC test bench 1 has a circular groove, and an angle adjustment shaft 2 is rotatably installed at the center of the circular groove. The top of the angle adjustment shaft 2 extends out of the circular groove and has a rectangular slot. A limit bracket 3 is slidably connected inside the rectangular slot. The limit bracket 3 is adapted to the rectangular slot. The top of the limit bracket 3 extends upward and is fixedly connected to a device positioning plate 4. The device positioning plate 4 is used to fix the device to be tested.

[0043] An annular inner guide rail 101 is fixedly installed in a circular groove, and a first annular telescopic groove is provided on the top of the annular inner guide rail 101. A lifting rail 103 is slidably installed in the first annular telescopic groove, and the top of the lifting rail 103 extends out of the first annular telescopic groove.

[0044] An annular outer guide rail 102 is fixedly installed in a circular groove, and a second annular telescopic groove is provided on the top of the annular outer guide rail 102. A second lifting rail 104 is slidably installed in the second annular telescopic groove. The top of the second lifting rail 104 extends out of the second annular telescopic groove, and a limit ring is provided on the top of both the second lifting rail 104 and the first lifting rail 103. The bottom of the equipment positioning plate 4 is movably connected in the limit ring.

[0045] The rotating mechanism is used to drive the angle adjustment shaft 2 to rotate;

[0046] The lifting mechanism is used to drive the lifting rail 103 and the lifting rail 2 104 to move up and down.

[0047] The test equipment positioning mechanism 6 is installed on the equipment positioning plate 4 and is used to fix the test equipment.

[0048] The support leg 7 is fixedly installed at the bottom of the EMC test bench 1.

[0049] Specifically, two supporting sliding mechanisms are installed at the bottom of the equipment positioning plate 4. The supporting sliding mechanism includes a mounting frame 401 and a bearing pulley 402. The mounting frame 401 is fixedly installed at the bottom of the equipment positioning plate 4, and the bearing pulley 402 is rotatably installed at the lower end of the mounting frame 401. The two bearing pulleys 402 are slidably connected in the limiting ring openings on the lifting rail 103 and the lifting rail 2 104, respectively. The bearing pulleys 402 roll on the inner bottom wall of the limiting ring opening.

[0050] Specifically, the rotating mechanism includes an adjusting gear ring 201, a servo motor 202, and a drive gear 203. The adjusting gear ring 201 is fixedly mounted on the surface of the angle adjusting shaft 2, the servo motor 202 is fixedly mounted on the bottom of the circular groove, and the output end of the servo motor 202 is fixedly connected to the drive gear 203, which meshes with the adjusting gear ring 201.

[0051] Specifically, the lifting mechanism includes a side fixed seat 5, a Z-axis lead screw 501, and a threaded engagement seat 502. Side fixed seats 5 are fixedly installed on both sides of the EMC test bench 1, with the Z-axis lead screw 501 rotatably mounted between the two side fixed seats 5 on the same side. Threaded engagement seats 502 are threaded onto both Z-axis lead screws 501, and a drive rod 105 is fixedly connected to the side of the threaded engagement seat 502. An opening 106 is provided on the side of the EMC test bench 1, and an annular inner guide rail 101 and an annular... The sides of the outer guide rail 102 are provided with sliding openings. The drive rod 105 is slidably connected to the movable opening 106 and the sliding opening. The drive rod 105 is fixedly connected to the lifting rail 104 and the lifting rail 103. The platform support leg 7 is fixedly installed with a servo motor 503. The output end of the servo motor 503 is fixedly connected to one of the Z-axis lead screws 501. Both Z-axis lead screws 501 are fixedly installed with sprockets 504. The two sprockets 504 are connected by a transmission chain 505.

[0052] Specifically, the positioning mechanism 6 of the testing equipment includes a slide groove 601, a limiting slide post 602, a push block 603, and a clamping positioning plate 604. The top of the equipment positioning plate 4 has four slide grooves 601 arranged in a cross shape. A limiting slide post 602 is fixedly installed in each slide groove 601. The push block 603 is slidably mounted on the limiting slide post 602 and slidably connected within the slide groove 601. The clamping positioning plate 604 is fixedly installed on the top of the push block 603, and the clamping positioning plate 604 is positioned... Outside the slide groove 601, a mounting block 605 is fixedly installed on the clamping positioning plate 604, and a rotating shaft is rotatably installed on the mounting block 605. The bottom end of the rotating shaft extends into the slide groove 601 and a traveling gear 606 is fixedly installed thereon. A parallel rack 607 parallel to the limiting slide post 602 is fixedly installed inside the slide groove 601, and the parallel rack 607 passes through the through hole inside the push block 603. The traveling gear 606 meshes with the parallel rack 607. A quick-travel handle 608 is fixedly installed at the top of the rotating shaft.

[0053] The specific implementation method of this embodiment is as follows: the device to be tested is placed on the device positioning plate 4, and each quick-moving handle 608 is rotated to make the traveling gear 606 rotate and move forward along the parallel rack 607, which in turn drives each push block 603 to move together, that is, each clamping positioning plate 604 moves together and fixes the device to be tested, so as to avoid loosening during the test and affect the test, and can fix devices to be tested of different sizes.

[0054] Before testing, the orientation can also be adjusted. Servo motor 202 is turned on and drives drive gear 203 to rotate. Under the meshing transmission of gear 201, angle adjustment shaft 2 drives limit bracket 3 to rotate, thereby moving the orientation of equipment positioning plate 4 to change the orientation of the equipment under test. Moreover, due to the variability of the installation position of the equipment under test by the testing equipment positioning mechanism 6, the adjustment of the position of the equipment under test is more comprehensive and has a wider range.

[0055] In addition, when the equipment positioning plate 4 rotates, the bearing pulley 402 slides within the limiting ring, which on the one hand ensures the stability of the equipment positioning plate 4, and on the other hand enables it to rotate smoothly.

[0056] Servo motor 2 503 is turned on, causing it to drive a Z-axis lead screw 501 to rotate. Under the transmission of sprocket 504 and transmission chain 505, both Z-axis lead screws 501 rotate. Then, threaded engagement seat 502 drives drive rod 105 to move, so that lifting rail 1 103 and lifting rail 2 104 can move up and down, thereby driving limit bracket 3 to move up and down in rectangular slot without affecting the rotation of limit bracket 3 driven by angle adjustment shaft 2, resulting in better performance.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustment device for EMC testing, characterized in that: The system includes an EMC test bench (1), the top of which has a circular groove, and an angle adjustment shaft (2) is rotatably installed at the center of the circular groove. The top of the angle adjustment shaft (2) extends out of the circular groove and has a rectangular slot, and a limit bracket (3) is slidably connected inside the rectangular slot. The top of the limit bracket (3) extends upward and is fixedly connected to a device positioning plate (4), and the device positioning plate (4) is used to fix the device to be tested. An annular inner guide rail (101) is fixedly installed in a circular groove, and a first annular telescopic groove is provided on the top of the annular inner guide rail (101). A lifting rail (103) is slidably installed in the first annular telescopic groove, and the top of the lifting rail (103) extends out of the first annular telescopic groove. An annular outer guide rail (102) is fixedly installed in a circular groove, and a second annular telescopic groove is provided on the top of the annular outer guide rail (102). A second lifting rail (104) is slidably installed in the second annular telescopic groove. The top of the second lifting rail (104) extends out of the second annular telescopic groove, and a limit ring is provided on the top of both the second lifting rail (104) and the first lifting rail (103). The bottom of the equipment positioning plate (4) is movably connected in the limit ring. A rotating mechanism is used to drive the angle adjustment shaft (2) to rotate; A lifting mechanism is provided to drive the lifting rail one (103) and the lifting rail two (104) to move up and down. Test equipment positioning mechanism (6), which is installed on the equipment positioning plate (4) and is used to fix the test equipment; The platform support leg (7) is fixedly installed at the bottom of the EMC test bench (1).

2. The adjustment device for EMC testing according to claim 1, characterized in that: The bottom of the equipment positioning plate (4) is equipped with two supporting sliding mechanisms. The supporting sliding mechanism includes a mounting frame (401) and a bearing pulley (402). The mounting frame (401) is fixedly installed at the bottom of the equipment positioning plate (4). The bearing pulley (402) is rotatably installed at the lower end of the mounting frame (401). The two bearing pulleys (402) are slidably connected in the limiting rings on the first lifting rail (103) and the second lifting rail (104), respectively.

3. The adjustment device for EMC testing according to claim 2, characterized in that: The rotating mechanism includes an adjusting gear ring (201), a servo motor (202), and a drive gear (203). The adjusting gear ring (201) is fixedly installed on the surface of the angle adjusting shaft (2). The servo motor (202) is fixedly installed at the bottom of the circular groove, and the output end of the servo motor (202) is fixedly connected to the drive gear (203). The drive gear (203) meshes with the adjusting gear ring (201).

4. The adjustment device for EMC testing according to claim 3, characterized in that: The lifting mechanism includes a side fixed seat (5), a Z-axis lead screw (501), and a threaded engagement seat (502). The EMC test bench (1) is fixedly installed on both sides with the upper and lower side fixed seats (5) distributed vertically. The Z-axis lead screw (501) is rotatably installed between the two side fixed seats (5) on the same side. The two Z-axis lead screws (501) are threadedly installed with threaded engagement seats (502). The side of the threaded engagement seat (502) is fixedly connected with a drive rod (105). The side of the EMC test bench (1) is provided with a movable opening (106). The sides of the inner annular guide rail (101) and the outer annular guide rail (102) are provided with sliding openings. The drive rod (105) is slidably connected in the movable opening (106) and the sliding opening. The drive rod (105) is fixedly inserted through the second lifting rail (104) and fixedly connected to the first lifting rail (103).

5. The adjustment device for EMC testing according to claim 4, characterized in that: A second servo motor (503) is fixedly installed on the platform support leg (7), and the output end of the second servo motor (503) is fixedly connected to one of the Z-axis lead screws (501). A sprocket (504) is fixedly installed on both Z-axis lead screws (501), and the two sprockets (504) are connected by a transmission chain (505).

6. The adjustment device for EMC testing according to claim 5, characterized in that: The positioning mechanism (6) of the test equipment includes a slide groove (601), a limiting slide column (602), a push block (603), and a clamping positioning plate (604). The top of the equipment positioning plate (4) is provided with four slide grooves (601) arranged in a cross shape. A limiting slide column (602) is fixedly installed in each slide groove (601). The push block (603) is slidably installed on the limiting slide column (602) and slidably connected in the slide groove (601). The clamping positioning plate (604) is fixedly installed on the top of the push block (603) and is located outside the slide groove (601).

7. The adjustment device for EMC testing according to claim 6, characterized in that: A mounting block (605) is fixedly installed on the clamping positioning plate (604), and a rotating shaft is rotatably installed on the mounting block (605). The bottom end of the rotating shaft extends into the slide groove (601) and a traveling gear (606) is fixedly installed thereon. A parallel rack (607) parallel to the limiting slide post (602) is fixedly installed in the slide groove (601), and the parallel rack (607) passes through the through hole inside the push block (603). The traveling gear (606) meshes with the parallel rack (607). A quick-access handle (608) is fixedly installed at the top end of the rotating shaft.

8. The adjustment device for EMC testing according to claim 1, characterized in that: The limiting bracket (3) is adapted to the rectangular slot.

9. An adjustment device for EMC testing according to claim 2, characterized in that: The load-bearing pulley (402) rolls on the inner bottom wall of the limiting ring.

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