An EMC test apparatus

Abstract

The utility model relates to EMC test technical field discloses a kind of EMC testing devices, the EMC testing device has first direction, second direction and third direction that intersect each other, including cabinet, the side wall of the cabinet is equipped with observation window, the cabinet top is provided with cross sliding slot;Rotary mechanism, the output end of the rotary mechanism is located in the cabinet, for placing element to be measured;Translation mechanism, be located in the cross sliding slot;Interference source, located in the cabinet, for emitting interference signal, the translation mechanism can drive the interference source reciprocating movement in the first direction, the second direction and the third direction.The utility model has the beneficial effects of: simple structure, it is convenient to simulate EMC test environment, reduce floor area, reduce EMC test cost, improve test efficiency, the position between interference source and element to be measured can be adjusted, improve test precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to EMC test technical field, especially a kind of EMC testing device. BACKGROUND

[0002] Electromagnetic Compatibility (EMC, El ectromagnetic Compatibi l ity) refers to the ability of electronic devices to work normally in an electromagnetic interference environment and the electromagnetic disturbance intensity when working. Electromagnetic interference and electromagnetic disturbance exist everywhere in actual life and working environment, especially in the fields of communication, industrial Internet of Things, automotive electronics and other complex electromagnetic environments with high radiation intensity. Therefore, electronic products will be subjected to EMC testing. In the prior art, a special site needs to be set up for EMC testing of electronic products, such as an anechoic chamber, a semi-anechoic chamber, etc. The site occupies a large area, and related equipment such as a signal generator, a power amplifier, a transmitting antenna, etc. needs to be set up in the site, which results in high testing cost and inconvenience due to site limitations. In addition, the position between the interference source and the element to be tested cannot be adjusted according to the actual testing situation during EMC testing, resulting in low testing accuracy. SUMMARY

[0003] The utility model aims at providing an EMC testing device, which is simple in structure, convenient for simulating EMC testing environment, reduces the occupied area, reduces the EMC testing cost, improves the testing efficiency, is convenient to use, and can adjust the position between the interference source and the element to be tested, thereby improving the testing accuracy.

[0004] To achieve the above-mentioned purpose, the utility model provides an EMC testing device, which has a first direction, a second direction and a third direction intersecting with each other, comprising

[0005] A box body is provided with an observation window on the side wall, and a cross-shaped sliding groove is formed on the top of the box body.

[0006] A rotating mechanism is arranged in the box body and used for placing the element to be tested.

[0007] A translation mechanism is arranged in the cross-shaped sliding groove and can move back and forth along the first direction and the second direction in the cross-shaped sliding groove.

[0008] An interference source is installed on one end of the translation mechanism away from the cross-shaped sliding groove in the third direction and located in the box body, and is used for emitting interference signals. The translation mechanism can drive the interference source to move back and forth in the first direction, the second direction and the third direction.

[0009] In a further embodiment, the translation mechanism comprises a tray, a mounting shaft, a plurality of universal ball bearings, and a fixing frame, the tray is arranged outside the box, the tray is arranged with a plurality of universal ball bearings near one end surface of the box in the third direction, the mounting shaft is arranged along the third direction and one end extends through the tray into the box and is connected with the fixing frame, and the fixing frame is used for mounting the interference source.

[0010] In a further embodiment, the tray comprises a disc body and a cylinder body fixedly connected, the disc body and the cylinder body are arranged with through holes along the third direction, the mounting shaft is arranged through the through holes and can reciprocate in the through holes along the third direction, and the side wall of the cylinder body is arranged with threaded holes communicated with the through holes, and the threaded holes are used for mounting screws to fix the mounting shaft and the cylinder body.

[0011] In a further embodiment, the side wall of the mounting shaft is circumferentially arranged with fixing grooves corresponding to the positions of the threaded holes.

[0012] In a further embodiment, the top of the mounting shaft is fixedly arranged with a cover plate, and the outer diameter of the cover plate is greater than the inner diameter of the cylinder body.

[0013] In a further embodiment, the fixing frame is arranged with a mounting cavity for mounting the interference source, and the side wall of the mounting cavity is arranged with locking screws for fixing the interference source.

[0014] In a further embodiment, the translation mechanism further comprises a limiting block, the tray is arranged with the limiting block near one end surface of the box in the third direction, the length of the limiting block in the second direction is L1, the length of the cross slide in the second direction is L2, and L1>L2.

[0015] In a further embodiment, the rotation mechanism comprises a rotating disc, a rotating shaft, and a driving member, the rotating disc is located in the box and is used for placing the to-be-tested element, the rotating shaft is rotationally connected with the box and one end is fixed with the rotating disc, and the other end of the rotating shaft is connected with the output end of the driving member.

[0016] In a further embodiment, the driving member comprises a mounting frame, a bearing seat, a rotating rod, and a right-angle commutator, the mounting frame is mounted outside the box, the bearing seat is arranged in the mounting, the rotating rod is arranged in the second direction and is rotationally connected with the bearing seat, the right-angle commutator has a first commutating rod arranged in the second direction and a second commutating rod arranged in the third direction, and the first commutating rod and the rotating rod and the second commutating rod and the rotating shaft are connected through couplings.

[0017] In a further embodiment, the rotating disc is provided with a wire passing hole in the third direction, and the box is provided with a wire pressing block.

[0018] Compared with the prior art, the EMC test device has the advantages that: the interference source is placed in the box to emit interference signals, and the EMC test environment is simulated in the box to reduce the floor area; the to-be-tested element is placed on the output end of the rotating mechanism, the rotating mechanism can drive the to-be-tested element to rotate, at the same time, the interference source can be reciprocated in the first direction, the second direction and the third direction by the translation mechanism, and the observation window is arranged on the side wall of the box, so that the position between the interference source and the to-be-tested element can be adjusted according to the actual test condition of the to-be-tested element, and the test precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the EMC test device of the utility model embodiment;

[0020] Figure 2 is a structural schematic view of the EMC test device of the utility model embodiment from another perspective;

[0021] Figure 3 is an installation schematic view of the rotating mechanism and the translation mechanism of the EMC test device of the utility model embodiment;

[0022] Figure 4 is a structural schematic view of the rotating mechanism of the EMC test device of the utility model embodiment;

[0023] Figure 5 is a structural schematic view of the driving part of the EMC test device of the utility model embodiment;

[0024] Figure 6 is a structural schematic view of the translation mechanism of the EMC test device of the utility model embodiment;

[0025] Figure 7 is a partial sectional view of the translation mechanism of the EMC test device of the utility model embodiment.

[0026] In the drawings:

[0027] 1, box; 11, observation window; 12, cross slide; 13, wire pressing block;

[0028] 2, rotating mechanism; 21, rotating disc; 211, wire passing hole; 22, rotating shaft; 23, driving part; 231, mounting frame; 232, bearing seat; 233, rotating rod; 234, right-angle commutator, 2341, first commutating rod; 2342, second commutating rod; 235, shaft coupling;

[0029] 3, translation mechanism; 31, tray; 311, disc body; 312, cylinder; 3121, threaded hole; 313, through hole; 32, mounting shaft; 321, fixed groove; 33, universal ball; 34, fixed frame; 340, mounting cavity; 35, cover plate; 36, limiting block;

[0030] 4, interference source;

[0031] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0033] In the description of the present application, it should be understood that the positions or location relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer" and the like in the present application are based on the positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices and elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, "second" information can also be referred to as "first" information.

[0035] As Figure 1As shown, the EMC testing device of the preferred embodiment of the utility model can provide electromagnetic interference environment, reduce the floor area, simple structure, convenient to use.EMC testing device includes box 1, rotating mechanism 2, translation mechanism 3 and interference source 4, in order to facilitate the description of each component, EMC testing device has the first direction X, the second direction Y and the third direction Z that intersect each other, namely the length direction of box 1 is the first direction X, the width direction of box 1 is the second direction Y, and the height direction of box 1 is the third direction Z, wherein, box 1 is used to provide a test environment, interference source 4 is located in box 1, emits interference signal, is used to simulate electromagnetic interference environment, in order to facilitate observation when testing, the side wall of box 1 is provided with observation window 11, in the embodiment, box 1 is hinged with box door, and the box door is made of transparent acrylic, which is used as observation window 11, and the overall structure is simple.Translation mechanism 3 is used to adjust the position of interference source 4 in box 1, in order to facilitate the guidance of translation mechanism 3 when moving interference source 4, a cross slide groove 12 is formed in the top of box 1.The output end of rotating mechanism 2 is located in box 1, which is used to place the element to be tested, and the position of the element to be tested and interference source 4 is adjusted separately by rotating mechanism 2 and translation mechanism 3, so that the position between the element to be tested and interference source 4 can be accurately adjusted, and the test precision is improved.Specifically, interference source 4 is installed on translation mechanism 3 at one end away from cross slide groove 12 in the third direction Z, and is located in box 1, and translation mechanism 3 can drive interference source 4 to move back and forth in the first direction X, the second direction Y and the third direction Z.

[0036] In some embodiments, in order to facilitate the setting of translation mechanism 3 and the movement of interference source 4, in the embodiment, in order to simplify the design difficulty of interference source 4, the walkie-talkie can be selected as interference source 4, which can be directly purchased, or other structures can be selected as interference source 4 according to actual test requirements. Figure 3 、 Figure 6 、 Figure 7 Translation mechanism 3 includes tray 31, mounting shaft 32, a plurality of universal ball bearings 33 and fixing frame 34, wherein tray 31 is arranged outside box 1, a plurality of universal ball bearings 33 are arranged on the end surface of tray 31 close to box 1 in the third direction Z, mounting shaft 32 is arranged along the third direction Z, and one end of mounting shaft 32 extends into box 1 through tray 31 and is connected with fixing frame 34, and fixing frame 34 is used to install interference source 4.Installing shaft 32 can slide in cross slide groove 12 along the first direction X and the second direction Y.

[0037] In some embodiments, in order to finely adjust the position of interference source 4 in the third direction Z, refer to Figure 6 、 Figure 7, the tray 31 comprises a disc body 311 fixedly connected and a cylinder body 312, the disc body 311 and the cylinder body 312 are provided with a through hole 313 along the third direction Z, the mounting shaft 32 is arranged in the through hole 313 and can reciprocate along the third direction Z, the side wall of the cylinder body 312 is provided with a threaded hole 3121 in communication with the through hole 313, and the threaded hole 3121 is used for mounting a screw (not shown in the figure) to fix the mounting shaft 32 and the cylinder body 312. When it is necessary to adjust the position of the interference source 4 along the third direction Z, the mounting screw can be loosened, the mounting shaft 32 can slide along the third direction Z, and after being adjusted to a suitable height, the mounting screw is tightened to fix the mounting shaft 32.

[0038] In some embodiments, in order to facilitate positioning when the mounting screw abuts against the mounting shaft 32 and to avoid rotation of the mounting shaft 32, referring to Figure 6 , the side wall of the mounting shaft 32 is circumferentially provided with a fixing groove 321 along the third direction Z, and the fixing groove 321 corresponds to the position of the threaded hole 3121. In some embodiments, in order to avoid the mounting shaft 32 from being separated from the through hole 313 and colliding with the falling and rotating mechanism 2, therefore, referring to Figure 6 、 Figure 7 , the top of the mounting shaft 32 is fixedly provided with a cover plate 35, and the outer diameter of the cover plate 35 is greater than the inner diameter of the cylinder body 312.

[0039] In some embodiments, in order to facilitate limiting during installation of the interference source 4, referring to Figure 6 , the fixing frame 34 is provided with a mounting cavity 340 for mounting the interference source 4, and in order to facilitate fixing the position of the interference source 4, the mounting cavity 340 is provided with a locking screw (not shown in the figure) for fixing the interference source 4 on the side wall.

[0040] In some embodiments, in order to keep the tray 31 stable as a whole when the tray 31 is moved and to avoid the universal wheel from being clamped into the cross-shaped sliding groove 12 and causing translation to be stuck, therefore, referring to Figure 1 、 Figure 6 , the translation mechanism 3 further comprises a limiting block 36, specifically, the tray 31 is provided with the limiting block 36 on the end face close to the box body 1 along the third direction Z, wherein the length of the limiting block 36 along the second direction Y is L1, the length of the cross-shaped sliding groove 12 along the second direction Y is L2, and L1>L2, so as to avoid the universal wheel from being clamped into the cross-shaped sliding groove 12.

[0041] In some embodiments, in order to facilitate rotating the to-be-tested element, the rotating mechanism 2 comprises a rotating disc 21, a rotating shaft 22 and a driving member 23, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The rotating disc 21 is located in the box 1 and is used for placing the element to be tested, the rotating shaft 22 is rotationally connected with the box 1 and is fixed at one end with the rotating disc 21, and the other end of the rotating shaft 22 is connected with the output end of the driving member 23. In other embodiments, in order to avoid that the position of the element to be tested is moved when the element to be tested rotates synchronously with the rotating disc 21, a jig (not shown in the figure) used for placing the element to be tested can be designed, the jig can be designed according to the shape of the element to be tested, the jig is placed on the rotating disc 21 or the jig is fixedly connected with the rotating disc 21, and thus the position of the element to be tested on the rotating disc 21 is avoided from being moved when the rotating disc 21 rotates.

[0042] In some embodiments, in order to facilitate manual adjustment of the position of the element to be tested according to the real-time test situation of the element to be tested, refer to Figure 3 、 Figure 4 、 Figure 5 The driving member 23 comprises a mounting frame 231, a bearing seat 232, a rotating rod 233 and a right-angle commutator 234, wherein the mounting frame 231 is mounted outside the box 1, the bearing seat 232 is arranged on the mounting frame 231, the rotating rod 233 is arranged along the second direction Y and is rotationally connected with the bearing seat 232, in this embodiment, in order to reduce the overall structure of the test device, the right-angle commutator 234 is a standard part and can be directly purchased, the right-angle commutator 234 has a first commutating rod 2341 arranged along the second direction Y and a second commutating rod 2342 arranged along the third direction Z, the first commutating rod 2341 and the rotating rod 233 are connected through a shaft coupling 235, and the second commutating rod 2342 and the rotating shaft 22 are connected through the shaft coupling 235. When the position of the element to be tested needs to be adjusted, the rotating rod 233 is rotated, the rotating disc 21 is synchronously rotated under the action of the right-angle commutator 234, and the position of the element to be tested can be adjusted to a specified position.

[0043] In some embodiments, in order to facilitate wiring after the interference source 4 and the element to be tested are connected, refer to Figure 1 The rotating disc 21 is provided with a wire hole 211 along the third direction Z, and the box 1 is provided with a wire pressing block 13, so that the wire harness connected with the interference source 4 and the element to be tested can be fixed.

[0044] In conclusion, the EMC test device provided in the embodiments of the utility model can place the interference source 4 in the box 1 to emit interference signals, simulate an EMC test environment in the box 1 and reduce the occupied area; the element to be tested is placed on the output end of the rotating mechanism 2, the rotating mechanism 2 can drive the element to be tested to rotate, at the same time, the interference source 4 can be reciprocally moved along the first direction X, the second direction Y and the third direction Z under the action of the translating mechanism 3, and the side wall of the box 1 is provided with an observation window 11, so that the position between the interference source 4 and the element to be tested can be adjusted according to the actual test situation of the element to be tested, and the test precision is improved.

[0045] The above merely is the preferred implementation form of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. An EMC test device having a first direction (X), a second direction (Y) and a third direction (Z) which intersect two by two, characterized in that: The utility model relates to a kind of test device for testing electronic components, including Box (1), the side wall of the box (1) is provided with observation window (11), the top of the box (1) is provided with cross slide groove (12); Rotary mechanism (2), the output end of the rotary mechanism (2) is located in the box, for placing element to be measured; Translation mechanism (3), it is located in the cross slide groove (12), and it can reciprocate along the first direction (X), the second direction (Y) in the cross slide groove; Interference source (4), it is installed on the end of the translation mechanism (3) away from the cross slide groove in the third direction (Z), and it is located in the box (1), for emitting interference signal, the translation mechanism (3) can drive the interference source (4) reciprocate in the first direction (X), the second direction (Y) and the third direction (Z).

2. The EMC test apparatus of claim 1, wherein: The translation mechanism (3) includes tray (31), mounting shaft (32), a plurality of universal ball (33) and fixed frame (34), the tray (31) is located outside the box (1), the tray (31) is provided with a plurality of universal ball (33) on the end surface close to the box (1) in the third direction (Z), the mounting shaft (32) is arranged along the third direction (Z), and one end extends through the tray (31) and extends into the box (1) and is connected with the fixed frame (34), and the fixed frame (34) is used to install the interference source (4).

3. An EMC test apparatus as claimed in claim 2, characterised in that: The tray (31) includes fixedly connected disc body (311) and cylinder (312), the disc body (311) and the cylinder (312) are provided with through hole (313) along the third direction (Z), the mounting shaft (32) is arranged in the through hole (313), and can reciprocate in the through hole (313) along the third direction (Z), the side wall of the cylinder (312) is provided with threaded hole (3121) communicated with the through hole (313), and the threaded hole (3121) is used to install screw to fix the mounting shaft (32) with the cylinder (312).

4. An EMC test apparatus as claimed in claim 3, characterised in that: The side wall of the mounting shaft (32) is circumferentially provided with fixed groove (321) along the third direction (Z), and the fixed groove (321) corresponds to the position of the threaded hole (3121).

5. The EMC test apparatus of claim 3, wherein: The top of the mounting shaft (32) is fixedly provided with cover plate (35), and the outer diameter of the cover plate (35) is greater than the inner diameter of the cylinder (312).

6. An EMC test apparatus as claimed in claim 5, characterised in that: The fixed frame (34) is provided with mounting cavity (340) for installing the interference source, and the side wall of the mounting cavity (340) is provided with locking screw for fixing the interference source (4).

7. The EMC test apparatus of claim 2, wherein: The translation mechanism (3) further includes limit block (36), and the end surface of the tray (31) close to the box (1) in the third direction (Z) is provided with the limit block (36), the length of the limit block (36) in the second direction (Y) is L1, the length of the cross slide groove (12) in the second direction (Y) is L2, and L1> L2.

8. The EMC test apparatus of claim 1, wherein: The rotating mechanism (2) comprises a rotating disc (21), a rotating shaft (22) and a driving member (23), the rotating disc (21) is located in the box (1) and is used for placing the element to be tested, the rotating shaft (22) is rotationally connected with the box (1) and one end is fixed with the rotating disc (21), and the other end is connected with the output end of the driving member (23).

9. An EMC test apparatus as claimed in claim 8, characterised in that: The driving member (23) comprises a mounting frame (231), a bearing seat (232), a rotating rod (233) and a right-angle commutator (234), the mounting frame (231) is mounted outside the box (1), the bearing seat (232) is arranged on the mounting frame (231), the rotating rod (233) is arranged in the second direction (Y) and is rotationally connected with the bearing seat (232), the right-angle commutator (234) has a first commutating rod (2341) arranged in the second direction (Y) and a second commutating rod (2342) arranged in the third direction (Z), and the first commutating rod (2341) and the rotating rod (233) and the second commutating rod (2342) and the rotating shaft (22) are connected through a shaft coupling (235).

10. The EMC test apparatus of claim 8, wherein: The rotating disc (21) is provided with a wire passing hole (211) in the third direction (Z), and the box (1) is provided with a wire pressing block (13).

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