Electromagnetic compatibility test fixture

Abstract

The invention relates to an electromagnetic compatibility test fixture. The electromagnetic compatibility test fixture comprises an air storage tank used for storing compressed air; the pneumatic control device is connected with the air storage tank and comprises a pneumatic valve; the pneumatic control clamp is used for clamping the electrical detection clamp, the pneumatic control clamp is connected with the pneumatic valve, and the pneumatic control device controls the pneumatic control clamp to act through the pneumatic valve so as to enable the electrical detection clamp to move to different test positions; and the camera device is used for shooting actions of the pneumatic control clamp. The electromagnetic compatibility test fixture provided by the invention is convenient to use and can improve the test efficiency and accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic compatibility testing, and in particular to an electromagnetic compatibility testing fixture. Background Art

[0002] Since electromagnetic compatibility testing has special environmental restrictions, its requirements for test fixtures are very different from other test fixtures. Electromagnetic compatibility test fixtures must have strong performance. On the one hand, they must ensure that they can still operate stably and normally after electromagnetic interference is applied, and are not affected by external electromagnetic interference and cause failures or abnormalities. On the other hand, it is also necessary to avoid electromagnetic influence on the external environment, because even slight electromagnetic interference may lead to inaccurate results of the entire test. Because of such strict requirements, many ordinary electromechanical structures cannot be used in electromagnetic compatibility test fixtures at all, and cannot meet the conditions of normal operation under strong electromagnetic interference and no external electromagnetic interference. Summary of the invention

[0003] In view of the above problems in the prior art, the present invention proposes an electromagnetic compatibility test fixture, which is easy to use and can improve test efficiency and accuracy.

[0004] Specifically, the present invention provides an electromagnetic compatibility test fixture suitable for electrical detection clamps, comprising:

[0005] Air tanks, used to store compressed air;

[0006] A pneumatic control device connected to the gas storage tank, wherein the pneumatic control device includes a pneumatic valve;

[0007] A pneumatic control fixture, used for clamping the electrical detection clamp, the pneumatic control fixture is connected to the pneumatic valve, and the pneumatic control device controls the movement of the pneumatic control fixture through the pneumatic valve to move the electrical detection clamp to different test positions;

[0008] A camera device is used to shoot the action of the pneumatically controlled clamp.

[0009] According to an embodiment of the present invention, the electromagnetic compatibility test fixture further includes an air pipe and a one-way valve, and the air pipe is connected to the air storage tank through the one-way valve.

[0010] According to one embodiment of the present invention, the pneumatic control fixture comprises an insulating support plate, a moving device and a fixing fixture, a groove is provided on the insulating support plate, a moving device is provided at the bottom of the groove, and the fixing fixture is fixedly arranged on the moving device;

[0011] The pneumatic control device blows compressed air by opening and closing the pneumatic valve. When the pneumatic valve is in an open state, the compressed air drives the moving device to move in the groove along the length direction of the insulating support plate, so that the fixing fixture moves to the test position.

[0012] According to one embodiment of the present invention, the groove is a semicircular groove.

[0013] According to one embodiment of the present invention, the moving device comprises a toothed bar and a support wheel, and the support wheel is arranged on the bottom surface of the toothed bar.

[0014] According to one embodiment of the present invention, the fixing fixture comprises a base and a fixing clamp, downwardly facing triangular teeth are formed on the bottom surface of the base, and the triangular teeth are engaged with the toothed bar;

[0015] An arc groove is provided on the surface of the base, the fixing clamp cooperates with the arc groove structure, the fixing clamp is suitable for moving in the arc groove, and the fixing clamp cooperates with the base to clamp the electrical detection clamp.

[0016] According to one embodiment of the present invention, the fixing clamp also includes a positioning pin, a first positioning hole is opened at the bottom of the arc-shaped groove, and a second positioning hole is opened on the fixing clamp. When the first positioning hole and the second positioning hole are aligned up and down, the positioning pin is inserted into the first positioning hole and the second positioning hole to fix the fixing clamp.

[0017] According to an embodiment of the present invention, a limiting device is provided on the insulating support plate, and the limiting device is used to limit the moving range of the fixing fixture.

[0018] According to one embodiment of the present invention, the pneumatic control fixture is made of non-metallic material.

[0019] According to an embodiment of the present invention, the electromagnetic compatibility test fixture further comprises a wire harness, and the wire harness passes through the electrical detection clamp.

[0020] The present invention provides an electromagnetic compatibility test fixture, which controls the pneumatic control fixture through a pneumatic control device to adjust the test position of an electrical detection clamp, thereby effectively reducing electromagnetic interference; the pneumatic control fixture can conveniently clamp electrical detection clamps of different models, thereby improving test efficiency.

[0021] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the description serve to explain the principle of the present invention.

[0023] In the attached figure:

[0024] Figure 1 A schematic structural diagram of an electromagnetic compatibility test fixture according to an embodiment of the present invention is shown.

[0025] Figure 2 A schematic structural diagram of a pneumatically controlled clamp according to an embodiment of the present invention is shown.

[0026] Figure 3 yes Figure 2 Schematic diagram of the structure of the moving device and the fixed fixture.

[0027] Figure 4 yes Figure 3 A three-dimensional view of the fixing fixture in FIG.

[0028] The above drawings include the following reference numerals:

[0029] EMC Test Fixture 100

[0030] Gas tank 110

[0031] Pneumatic control device 120

[0032] Pneumatic valve 121

[0033] Pneumatically controlled clamp 130

[0034] Insulation support plate 131

[0035] Groove 1311

[0036] Limit device 1312

[0037] Mobile device 132

[0038] Toothed bar 1321

[0039] Support wheel 1322

[0040] Fixing fixture 133

[0041] Base 1331

[0042] Fixing clip 1332

[0043] Triangular tooth 1333

[0044] Positioning pin 1334

[0045] First positioning hole 1335

[0046] The second positioning hole 1336

[0047] Arc groove 1337

[0048] Camera device 140

[0049] Trachea 150

[0050] Check valve 160

[0051] Wiring harness 170 DETAILED DESCRIPTION

[0052] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0059] Figure 1 A schematic structural diagram of an electromagnetic compatibility test fixture according to an embodiment of the present invention is shown. Figure 2 A schematic structural diagram of a pneumatically controlled clamp according to an embodiment of the present invention is shown. Figure 3 yes Figure 2 Schematic diagram of the structure of the moving device and the fixed fixture. Figure 4 yes Figure 3As shown in the figure, the present invention provides an electromagnetic compatibility test fixture 100 suitable for an electrical detection clamp. It should be noted that the electrical detection clamp generally includes a current clamp and a current injection clamp, and the electrical detection clamp is mainly used for the detection of electrical parameters (especially current-related parameters) or related operations.

[0060] The electromagnetic compatibility test fixture 100 mainly includes a gas storage tank 110 , a pneumatic control device 120 , a pneumatic control fixture 130 and a camera device 140 .

[0061] The air storage tank 110 is used to store compressed air.

[0062] The pneumatic control device 120 is connected to the air storage tank 110 . The pneumatic control device 120 includes a pneumatic valve 121 , and the pneumatic control device 120 is connected to the pneumatic control fixture 130 through the pneumatic valve 121 .

[0063] The pneumatic control fixture 130 is used to clamp the electrical testing clamp. The pneumatic control fixture 130 is connected to the pneumatic valve 121. The pneumatic control device 120 controls the pneumatic control fixture 130 to move through the pneumatic valve 121 so that the electrical testing clamp moves to different test positions.

[0064] The camera device 140 is used to film the movement of the pneumatic control fixture 130. Conventionally, the pneumatic control fixture 130 is set in the laboratory. The camera device 140 is convenient for the staff outside the laboratory to monitor the movement of the pneumatic control fixture 130 and observe the test position of the electrical detection clamp. According to the observation results, the staff can control the pneumatic control device 120 to realize the control of the pneumatic control fixture 130, so as to adjust the test position of the electrical detection clamp; or transmit the control signal to the pneumatic control device 120 through the camera device 140 to realize the control of the pneumatic control fixture 130, and further adjust the test position of the electrical detection clamp.

[0065] In some examples, the electromagnetic compatibility test fixture 100 further includes an air pipe 150 and a one-way valve 160. The air pipe 150 is connected to the air tank 110 through the one-way valve 160. The one-way valve 160 is used to limit the flow direction of compressed air. The air pipe 150 provides compressed air to the air tank 110 through the one-way valve 160.

[0066] In some examples, reference Figure 2 , Figure 3 and Figure 4The pneumatic control fixture 130 includes an insulating support plate 131, a moving device 132 and a fixing fixture 133. The insulating support plate 131 provides the height and dielectric constant required by the test standard. A groove 1311 is provided on the insulating support plate 131, and a moving device 132 is provided at the bottom of the groove 1311. The fixing fixture 133 is fixedly arranged on the moving device 132, and the fixing fixture 133 is used to clamp the electrical detection clamp. The pneumatic control device 120 controls the blowing of compressed air by opening and closing the pneumatic valve 121. When the pneumatic valve 121 is in the open state, the compressed air drives the moving device 132 to move in the groove 1311 along the length direction of the insulating support plate 131 through the pneumatic valve 121, so that the fixing fixture 133 moves to the test position.

[0067] In some examples, the groove 1311 is a semicircular groove. The semicircular groove plays an important role in the test scenario. As a guide groove, it provides a clear and stable moving path for the electrical detection clamp. This semicircular groove structure can ensure that the electrical detection clamp always moves along the established trajectory during the movement process, avoiding the problem of inaccurate detection due to directional deviation. At the same time, the design of the semicircular groove also makes the movement of the electrical detection clamp smoother, improves the efficiency and accuracy of the detection work, and provides a strong guarantee for the smooth progress of the electrical detection work.

[0068] In some examples, reference Figure 3 The mobile device 132 includes a toothed bar 1321 and a support wheel 1322, and the support wheel 1322 is arranged on the bottom surface of the toothed bar 1321. The toothed bar 1321 serves as the main structure, and the support wheel 1322 is arranged on the bottom surface of the toothed bar 1321. The support wheel 1322 is conducive to reducing the friction generated when the toothed bar 1321 moves, so that the entire mobile device 132 is more stable and reliable during operation. As an example but not a limitation, the mobile device 132 can also use a non-metallic motion mechanism such as a screw rod, a belt, a pulley, a chain, a crank connecting rod, etc. to achieve its movement purpose.

[0069] In some examples, reference Figure 4The fixing fixture 133 includes a base 1331 and a fixing clamp 1332. A downward triangular tooth 1333 is formed on the bottom surface of the base 1331, and the triangular tooth 1333 is meshed with the tooth groove bar 1321. These triangular teeth 1333 can be tightly meshed with the tooth groove bar 1321, so that the connection between the base 1331 and the tooth groove bar 1321 is more stable, ensuring that the mobile device 132 can work reliably in the moving process. Further, an arc groove 1337 is provided on the surface of the base 1331. The fixing clamp 1332 is matched with the arc groove 1337 structure. The fixing clamp 1332 is suitable for moving in the arc groove 1337 along the length direction of the tooth groove bar 1321. The fixing clamp 1332 cooperates with the base 1331 to clamp the electrical detection clamp. Because the electrical detection clamp is a circular structure, the length direction of the tooth groove bar 1321 is parallel to the axial direction of the electrical detection clamp, and the bottom of the electrical detection clamp is suitable for being placed in the arc groove 1337. This structural design enables the fixing clamp 1332 to cooperate with the base 1331 to better clamp the electrical testing clamp. Moreover, this structure is suitable for electrical testing clamps of different models and thicknesses, thereby improving the test compatibility of the electromagnetic compatibility test fixture 100.

[0070] In some examples, the fixing clamp 133 also includes a positioning pin 1334. A first positioning hole 1335 is provided at the bottom of the arc groove 1337, and a second positioning hole 1336 is provided on the fixing clamp 1332. When the first positioning hole 1335 and the second positioning hole 1336 are aligned up and down, the positioning pin 1334 is inserted into the first positioning hole 1335 and the second positioning hole 1336 to fix the fixing clamp 1332 on the base 1331. The positioning pin 1334 is plugged and matched with the first positioning hole 1335 and the second positioning hole 1336, so that the overall structure of the fixing clamp 133 is more stable, and the clamping effect of the electrical detection clamp is improved. As an example and not a limitation, the fixing clamp 1332 is connected to the base 1331 by Velcro to achieve the clamping and fixing of electrical detection clamps of different thicknesses.

[0071] In some examples, reference Figure 3 A limit device 1312 is provided on the insulating support plate 131. The limit device 1312 is used to limit the moving range of the fixing fixture 133. Through precise limiting, the fixing fixture 133 is ensured to move within a specific area, thereby ensuring the stability and accuracy of the fixing fixture 133 during the entire working process, and avoiding accidental contact damage between the fixing fixture 133 and the electrical detection clamp.

[0072] In some examples, the pneumatic control fixture 130 is made of non-metallic materials, because non-metallic materials can effectively avoid electromagnetic influences, ensuring that the pneumatic control fixture 130 operates stably in an electromagnetic environment without interfering with surrounding devices.

[0073] In some examples, the electromagnetic compatibility test fixture 100 further includes a wire harness 170, which passes through the electrical test clamp. By combining the wire harness 170 with the electrical test clamp, the electromagnetic compatibility of the electrical test clamp can be comprehensively and accurately tested, providing reliable guarantee for product quality and performance.

[0074] The electromagnetic compatibility test fixture provided by the present invention has the following advantages:

[0075] 1. The overall structure is compact and easy to achieve the layout requirements of different tests;

[0076] 2. Control the pneumatic control fixture through the pneumatic control device to achieve partial automation of the test process;

[0077] 3. Suitable for electrical inspection pliers of different sizes or thicknesses.

[0078] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. An electromagnetic compatibility test fixture, suitable for electrical detection clamps, comprising: Air tanks, used to store compressed air; A pneumatic control device connected to the gas storage tank, wherein the pneumatic control device includes a pneumatic valve; A pneumatic control fixture, used for clamping the electrical detection clamp, the pneumatic control fixture is connected to the pneumatic valve, and the pneumatic control device controls the movement of the pneumatic control fixture through the pneumatic valve to move the electrical detection clamp to different test positions; A camera device is used to shoot the action of the pneumatically controlled clamp.

2. The electromagnetic compatibility test fixture as claimed in claim 1, characterized in that: The electromagnetic compatibility test fixture also includes an air pipe and a one-way valve, and the air pipe is connected to the air storage tank through the one-way valve.

3. The electromagnetic compatibility test fixture as claimed in claim 1, characterized in that: The pneumatic control fixture comprises an insulating support plate, a moving device and a fixing fixture, wherein a groove is provided on the insulating support plate, a moving device is provided at the bottom of the groove, and the fixing fixture is fixedly arranged on the moving device; The pneumatic control device controls the blowing of compressed air by opening and closing the pneumatic valve. When the pneumatic valve is in an open state, the compressed air drives the moving device to move in the groove along the length direction of the insulating support plate, so that the fixing fixture moves to the test position.

4. The electromagnetic compatibility test fixture as claimed in claim 3, characterized in that: The groove is a semicircular groove.

5. The electromagnetic compatibility test fixture as claimed in claim 3, characterized in that: The moving device comprises a toothed bar and a supporting wheel, and the supporting wheel is arranged on the bottom surface of the toothed bar.

6. The electromagnetic compatibility test fixture as claimed in claim 5, characterized in that: The fixing fixture comprises a base and a fixing clamp, and downward triangular teeth are formed on the bottom surface of the base, and the triangular teeth are engaged with the tooth groove bar; An arc groove is opened on the surface of the base, the fixing clamp cooperates with the arc groove structure, the fixing clamp is suitable for moving in the arc groove, and the fixing clamp cooperates with the base to clamp the electrical detection clamp.

7. The electromagnetic compatibility test fixture as claimed in claim 6, characterized in that: The fixing clamp also includes a positioning pin, a first positioning hole is opened at the bottom of the arc groove, and a second positioning hole is opened on the fixing clamp. When the first positioning hole and the second positioning hole are aligned up and down, the positioning pin is inserted into the first positioning hole and the second positioning hole to fix the fixing clamp.

8. The electromagnetic compatibility test fixture as claimed in claim 6, characterized in that: A limiting device is provided on the insulating support plate, and the limiting device is used to limit the moving range of the fixing fixture.

9. The electromagnetic compatibility test fixture according to claim 1, characterized in that: The pneumatic control fixture is made of non-metallic material.

10. The electromagnetic compatibility test fixture according to claim 1, characterized in that: The electromagnetic compatibility test fixture further includes a wire harness passing through the electrical detection clamp.

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