CN113671222B

CN113671222B - Filtering module with high shielding performance and corresponding shielding box thereof

Info

Publication number: CN113671222B
Application number: CN202110945094.XA
Authority: CN
Inventors: 余守军; 秦永昌; 贺智
Original assignee: Shenzhen Welltest Technology Co ltd
Current assignee: Shenzhen Welltest Technology Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-04-22
Anticipated expiration: 2041-08-17
Also published as: CN113671222A

Abstract

The invention relates to a filter module with high shielding performance, which comprises an upper cover plate, a lower cover plate, a circuit board and a conductive material. The upper cover plate is connected with the lower cover plate in a sealing mode, a sealing accommodating groove is formed in the upper cover plate and the lower cover plate, and the circuit board is arranged in the sealing accommodating groove. The input interface and the output interface on the circuit board respectively penetrate out of the first through groove and the second through groove, and can be communicated with a computer and instruments outside the shielding box when a product is tested. The input interface and the output interface are arranged in a staggered mode, the original structural scheme and circuit design are changed, better filtering performance is guaranteed, the direction of electromagnetic waves passing through the structural part can be changed, and therefore better shielding performance is achieved. The invention also comprises a shielding box provided with the filtering module with high shielding performance. The invention ensures good shielding performance and transmission rate and improves the test precision.

Description

Filtering module with high shielding performance and corresponding shielding box thereof

Technical Field

The invention relates to the technical field of test manufacturing, in particular to a filtering module with high shielding performance and a corresponding shielding box.

Background

Along with the popularization of 3C digital products such as tablet computers, mobile phones and the like, the requirements on wireless test of the products are higher and higher, the requirements on production efficiency are also higher and higher, and the quality can be ensured through multiple tests. The wireless test is one of the essential important processes in the mobile phone production detection process, and the test interface of the current manufacturer is of a linear structure, so that the shielding effect is relatively poor, and the test precision is low.

Therefore, it is desirable to provide a filter module with high shielding performance and a shielding box thereof to solve the above problems.

Disclosure of Invention

The invention relates to a filter module with high shielding performance, which comprises an upper cover plate, a lower cover plate, a circuit board and a conductive material. The upper cover plate is connected with the lower cover plate in a sealing mode, a sealing accommodating groove is formed in the upper cover plate and the lower cover plate, and the circuit board is arranged in the sealing accommodating groove. The input interface and the output interface on the circuit board respectively penetrate out of the first through groove and the second through groove and are used for communicating with a computer and instruments outside the shielding box when products are tested in the shielding box, and the testing environment can be ensured to be communicated under a shielding state. The input interface and the output interface are respectively arranged on two sides of the plate main body, and the output interface and the input interface are arranged in a staggered mode, so that the original structural scheme and circuit design are changed, better filtering performance is guaranteed, the direction of electromagnetic waves passing through a structural part can be changed, and better shielding performance is achieved. The invention also comprises a shielding box provided with the filtering module with high shielding performance. The invention ensures good shielding performance and transmission rate, improves the testing precision, and solves the problems of poor shielding effect and low testing precision caused by the fact that the testing interface is a linear structure in the prior art.

In order to solve the above problems, the present invention comprises: a filter module with high shielding performance comprises:

the upper cover plate is provided with a plurality of first through grooves;

the lower cover plate is connected with the upper cover plate in a sealing mode and internally provided with an accommodating groove, and the lower cover plate is provided with a plurality of second through grooves;

the circuit board is arranged in the accommodating groove, a board main body, a plurality of input interfaces and a plurality of output interfaces are arranged on the circuit board, the input interfaces and the output interfaces are respectively arranged on two sides of the board main body, and the output interfaces and the input interfaces are arranged in a staggered mode; the input interface is in telecommunication connection with the corresponding output interface, the input interface penetrates through the first through groove, and the output interface penetrates through the second through groove; and the number of the first and second groups,

and the conductive material is used for avoiding gaps between the upper cover plate and the circuit board and between the lower cover plate and the circuit board.

In the filtering module with high shielding performance, the circuit board is also provided with an LC parallel resonator circuit, and the LC parallel resonator circuit is provided with at least two stages. The electromagnetic signals of each stage of the LC parallel resonator circuit are shielded and isolated, so that the electromagnetic signals of each stage of the LC parallel resonator circuit are prevented from being conducted with each other through space, and the filtering characteristic of each stage of the LC parallel resonator circuit is greatly improved.

Furthermore, the input interface, the board main body and the output interface which is in corresponding communication connection with the input interface are arranged in a Z-shaped structure. The direction of the electromagnetic wave passing through the structural member can be changed, so that better shielding performance and transmission rate are achieved.

Furthermore, the conductive material is provided with a third through groove corresponding to the first through groove and the second through groove, and the third through groove, the first through groove and the second through groove are the same in size, so that the sealing effect is improved.

Furthermore, a plurality of frames are arranged on the inner side of the upper cover plate and the inner side of the lower cover plate, and the frames are arranged around the peripheries of the first through groove, the second through groove and the third through groove, so that the sealing effect between the conductive material and the upper cover plate and between the lower cover plate and the circuit board is improved.

Furthermore, conducting material sets up to flexible electrically conductive bubble cotton, does benefit to the compression and fills the circuit board with the upper cover plate the clearance between the apron down guarantees the leakproofness and guarantees the isolation.

Furthermore, the periphery of the circuit board is provided with a shielding wire, and the shielding wire is connected with the conductive material in a sealing manner. The electric conductivity is good, the conducting material contacts with the shielding wire, so that a closed metal accommodating groove is formed, and electromagnetic shielding is realized.

A shielded enclosure, comprising:

the feeding device comprises a case, a feeding device and a control device, wherein the case is provided with a cavity and a feeding hole, and the feeding hole is formed in one side of the case;

the front door module penetrates through the feeding hole and is arranged in the cavity in a sliding mode and used for conveying products;

the antenna module is arranged in the cavity and used for emitting electromagnetic waves, and the antenna module is in telecommunication connection with a product on the front door module; and the number of the first and second groups,

any one of the above filtering modules with high shielding performance is arranged on one side of the case and used for filtering processing.

Furthermore, the front door module is provided with a clamping device, a front door cover plate and a driving device, and one side of the front door cover plate is connected with the clamping device and used for sealing the feeding hole. The clamping device is at least provided with one group and used for placing a plurality of products, so that the testing efficiency is improved. The driving device is used for driving the front door cover plate to be far away from or to be tightly attached to the feeding hole.

Furthermore, the antenna module comprises a supporting seat, a moving device and an antenna device, wherein the supporting seat is connected with the inner wall of the cavity. The moving device is arranged on the supporting seat and used for driving the antenna device to move. The antenna device is in transmission connection with the mobile device and is provided with a plurality of antennas, and the antennas are used for transmitting electromagnetic waves. The relative position between the antenna device and the product can be adjusted, and the test compatibility and the test precision are improved.

Compared with the prior art, the filter module with high shielding performance and the corresponding shielding box have the advantages that: the invention relates to a filter module with high shielding performance, which comprises an upper cover plate, a lower cover plate, a circuit board and a conductive material. The upper cover plate is connected with the lower cover plate in a sealing mode, a sealing cavity is formed inside the upper cover plate, and the circuit board is arranged in the sealing cavity. The input interface and the output interface on the circuit board respectively penetrate out of the first through groove and the second through groove and are used for communicating with a computer and instruments outside the shielding box when products are tested in the shielding box, and the testing environment can be ensured to be communicated under a shielding state. The input interface and the output interface are respectively arranged on two sides of the plate main body, and the output interface and the input interface are arranged in a staggered mode, so that the original structural scheme and circuit design are changed, better filtering performance is guaranteed, the direction of electromagnetic waves passing through a structural part can be changed, and better shielding performance is achieved. The invention also comprises a shielding box provided with the filtering module with high shielding performance. The invention ensures good shielding performance and transmission rate, improves the testing precision, and solves the problems of poor shielding effect and low testing precision caused by the fact that the testing interface is a linear structure in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding to some embodiments of the present invention.

Fig. 1 is an exploded schematic view of a filter module with high shielding performance and a shielding box thereof according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a filter module with high shielding performance and a framework of a shielding box corresponding to the filter module according to an embodiment of the present invention.

Fig. 3 is a schematic plan view of a filter module with high shielding performance and a corresponding shielding box according to an embodiment of the invention.

Fig. 4 is a side view of a filter module with high shielding performance and a corresponding shielding box according to an embodiment of the invention.

Fig. 5 is an exploded schematic view of a filter module with high shielding performance and a corresponding shielding box according to an embodiment of the invention.

Fig. 6 is an exploded schematic view of a front door module of a filter module with high shielding performance and a shielding box corresponding to the filter module according to an embodiment of the present invention.

Fig. 7 is an exploded view of a filter module with high shielding performance and a clamping device of a shielding box corresponding to the filter module according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of an embodiment of a filter module with high shielding performance and an antenna module of a shielding box according to the invention.

Fig. 9 is a schematic diagram of the exploded structure of fig. 8.

Fig. 10 is a schematic structural diagram of a Y-axis moving unit of a filter module with high shielding performance and a corresponding shielding box according to an embodiment of the invention.

Fig. 11 is a schematic structural diagram of an embodiment of a filter module with high shielding performance and an antenna device of a shielding box thereof according to the invention.

In the figure: 10. the filter module with high shielding performance and the corresponding shielding box thereof, 20, a case, 21, a framework, 211, a C-shaped conductive foam surface, 212, a rectangular conductive foam surface, 213, wave absorbing cotton, 22, a wave absorbing layer, 30, a front door module, 31, a front door, 311, a communication unit, 32, a clamping device, 321, a carrier plate, 3211, a support block, 3212, a heat dissipation groove, 3213, a first groove, 3214, a second groove, 3215, a third groove, 322, a limit unit, 3221, a first limit block, 32211, an installation block, 32212, a convex block, 3222, a second limit block, 3223, a third limit block, 323, an automatic plugging unit, 3231, a first cylinder, 3232, a sliding block, 3233, a connecting block, 3234, a communication terminal, 33, a front door cover plate, 331, a quick-stop switch, 332, a start button, 34, a driving device, 341, a guide shaft, 342, a driving unit, 40, an antenna module, 41, 32411, 3234, a support seat groove, 42. the mobile device comprises 421 an X-axis mobile unit, 4211 an X-axis motor, 4212 an X-axis transmission shaft, 4213 a mobile belt, 4214 an X-axis synchronous belt, 4215 an X-axis bearing, 422 a Y-axis mobile unit, 4221 a Y-axis motor, 4222 a connecting plate, 4223 a Y-axis mobile shaft, 4224 a Y-axis bearing, 4225 a Y-axis synchronous belt, 43 an antenna device, 431 a support frame, 432 a support plate, 4321 a fixed rod, 433 an antenna, 4331 a first rod section, 4332 a second rod section, 4333 a rotating shaft, 50 a filter module, 51 an upper cover plate, 511 a first through groove, 52 a lower cover plate, 521 a second through groove, 53 a circuit board, 531 a board body, 532 an input interface, 533 an output interface, 54 a conductive material, 541 a third through groove and 55 a frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom" are used only with reference to the orientation of the drawings, and the directional terms are used for illustration and understanding of the present invention, and are not intended to limit the present invention.

In the drawings, elements having similar structures are denoted by the same reference numerals.

Referring to fig. 1, in the present embodiment, the filter module with high shielding performance and the corresponding shielding box 10 thereof include a chassis 20, a front door module 30, an antenna module 40, and a filter module 50 with high shielding performance. The case 20 is provided with a cavity and a feeding hole, and the inner side of the case 20 is provided with a wave absorbing layer 22 for absorbing redundant signals inside and preventing reflection. Referring to fig. 2, the six face frame structures of the frame 21 of the chassis 20 may be arranged identically, so that the cover plates may be replaced with each other, the installation is convenient, and different test requirements and later-stage upgrading are met. Bottom apron, top apron, preceding door cover board, back apron, right side apron, left side cover plate all are the same size, and all with skeleton 21 bolted connection. The C-shaped conductive bubble surface 211, the rectangular conductive bubble surface 212 and the wave-absorbing cotton 213 are arranged at the connecting part between the framework 21 and each cover plate, so that the interference of external electromagnetic waves to the test is reduced.

In the embodiment, referring to fig. 1 and fig. 3, the filter module 50 is disposed at one side of the chassis 20, and the conductive material 54 is filled between the upper cover plate 51 and the chassis 20, so that when the filter module 50 is mounted on the sidewall of the chassis 20, a gap between the filter module 50 and the chassis 20 is filled, thereby ensuring good contact and further increasing isolation to prevent signal leakage.

Referring to fig. 4 and 5, the filter module 50 is used for filtering to reduce interference of external electromagnetic waves to the test in the chassis 20. The filter module 50 includes an upper cover plate 51, a lower cover plate 52, a circuit board 53 and a conductive material 54. The upper cover plate 51, the circuit board 53 and the lower cover plate 52 are screwed down through screws, and the gaps among the upper cover plate 51, the circuit board 53 and the lower cover plate 52 are filled with the conductive material 54, so that the space tightness is ensured, and the overall isolation is improved. The upper cover plate 51 and the lower cover plate 52 are both made of metal, a sealed accommodating groove is arranged between the upper cover plate 51 and the lower cover plate 52, and the circuit board 53 is arranged in the accommodating groove. The upper cover plate 51 and the lower cover plate 52 are exposed and electrically conductive at the periphery and inside to facilitate contact with the conductive material 54. The upper cover plate 51 is provided with a plurality of first through grooves 511, the lower cover plate 52 is provided with a plurality of second through grooves 521, the conductive material 54 is provided with third through grooves 541 corresponding to the first through grooves 511 and the second through grooves 521, and the third through grooves 541, the first through grooves 511 and the second through grooves 521 are all the same in size, so that the conductive material 54 can be conveniently mounted, and the assembly efficiency is improved. A plurality of frames 55 are disposed inside the upper cover plate 51 and inside the lower cover plate 52, and the frames 55 are disposed around the peripheries of the first through groove 511, the second through groove 521, and the third through groove 541, so that the sealing effect between the conductive material 54 and the upper cover plate 51, between the lower cover plate 52, and between the circuit board 53 is improved. In this embodiment, the conductive material 54 may be a flexible conductive foam, which is beneficial to filling the gap between the circuit board 53 and the upper cover plate 51 and the lower cover plate 52 in a compressed manner, so as to ensure the sealing property and the isolation.

The circuit board 53 includes a board body 531, a plurality of input interfaces 532, and a plurality of output interfaces 533. The input interface 532 and the output interface 533 are respectively disposed at two sides of the board main body 531, and the output interface 533 and the input interface 532 are disposed in a staggered manner. The input interface 532 is in telecommunication connection with the corresponding output interface 533, the input interface 532 penetrates through the first through groove 511, and the output interface 533 penetrates through the second through groove 521, so that the product can communicate with a computer and instruments outside the case 20 when tested in the case 20, and the testing environment can also communicate under a shielding state. In the present embodiment, referring to fig. 4, the input interface 532, the board main body 531, and the output interface 533 communicatively connected to the input interface 532 are arranged in a zigzag structure, so as to change the direction of the electromagnetic wave passing through the structural member, thereby achieving better shielding performance and transmission rate. The circuit board 53 may be configured as a PCBA board, whose interior is composed of high-Q inductor-capacitor series-parallel connections, and whose interface may be configured as USB2.0, DB9, DB25, DC, RJ45 network ports.

The circuit board 53 is further provided with an LC parallel resonator circuit, and the LC parallel resonator circuit is provided with at least two stages. The electromagnetic signals of each stage of LC parallel resonator circuit are shielded and isolated, so that the electromagnetic signals of each stage of LC parallel resonator circuit are prevented from being conducted with each other through space, and the filtering characteristic of each stage of LC parallel resonator circuit is greatly improved. The inductance and capacitance of each LC stage is composed of high-frequency high-Q inductance and high-frequency high-Q capacitance, so that the ultra-low loss of the pass band is ensured, and the high attenuation of the stop band is ensured. The circuit board 53 is provided at its periphery with a shield wire which is hermetically connected to the conductive material 54. The shield wire may be made of copper or gold, and has good conductivity, and the conductive material 54 is in contact with the shield wire, so as to form a closed metal accommodating groove for realizing electromagnetic shielding.

In the present embodiment, referring to fig. 6, the front door module 30 is disposed at the position of the discharge opening, and the antenna module 40 is disposed in the cavity. The front door module 30 and the antenna module 40 are separated from each other and arranged on the upper side and the lower side of the case 20, so that the front door module and the antenna module do not interfere with each other, and the influence of the mobile device 42 on the test is reduced. The front door module 30 includes a front door 31, a clamping device 32, a front door cover 33 and a driving device 34. The front door 31 is disposed between the front door cover 33 and the clip device 32, the front door 31 is provided with a plurality of communication units 311, and the front door cover 33 is covered on the outer periphery of the front door 31. The driving device 34 includes two guide shafts 341 and two driving units 342, one end of each guide shaft 341 is connected to the front door 31, and the other end of each guide shaft 341 is movably disposed on the chassis 20. The driving units 342 are disposed on the front door 31, each driving unit 342 corresponds to one guide shaft 341, and the driving units 342 drive the guide shafts 341 to move toward or away from the chassis 20, so as to drive the products into the chassis 20. An emergency stop switch 331 and a start button 332 are arranged on the front door cover plate 33, the start button 332 is used for starting test operation after products are placed, and the emergency stop switch 331 is used for emergency danger avoidance. The joint of the front door module 30 and the box body is provided with a concave-convex sealing structure, the door body is closed automatically, the door body and the box body are contacted more tightly, and the shielding performance of the joint is improved.

Referring to fig. 6 and 7, the holding device 32 has at least one set, in the embodiment, the holding device 32 has three sets, each set corresponds to one communication unit 311. The clamping device 32 includes a carrier 321, a limiting unit 322 and an automatic plugging unit 323. One end of the carrier plate 321 is connected with the front door cover plate 33, and at least two mounting positions are arranged on the carrier plate 321 and used for placing products. The carrier plate 321 is provided with a plurality of supporting blocks 3211, the supporting blocks 3211 are disposed in the mounting locations, and the product is placed on the supporting blocks 3211 to separate the product from the carrier plate 321. The inside of installation position still is provided with radiating groove 3212, and radiating groove 3212 link up the setting. The supporting blocks 3211 and the heat dissipation grooves 3212 are used to improve the heat dissipation effect in the product test. The carrier 321 is further provided with a first groove 3213, a second groove 3214 and a third groove 3215. The first grooves 3213 are disposed on opposite sides of the mounting location, the second grooves 3214 and the third grooves 3215 are respectively disposed on the other two sides of the mounting location, and the second grooves 3214 and the third grooves 3215 are disposed on different sides of the mounting location. The length directions of the first groove 3213 and the third groove 3215 are both perpendicular to the side edges of the corresponding mounting positions. Each mounting position is provided with a group of limiting units 322, and the limiting units 322 are provided with a first limiting block 3221, a second limiting block 3222 and a third limiting block 3223. The first stop block 3221 is disposed at the first groove 3213, the first stop block 3221 includes an installation block 32211 and a protrusion block 32212, the installation block 32211 is connected to the carrier plate 321 by a bolt, the protrusion block 32212 is disposed at a side of the installation block 32211 away from the carrier plate 321, a width of the protrusion block 32212 is smaller than a width of the installation block 32211, and a side of the width of the protrusion block 32212 is close to the installation position. The second stopper 3222 is clamped in the second groove 3214, and the size of the second groove 3214 corresponds to the size of the connecting end of the second stopper 3222. The second limiting block 3222 is configured to be a rectangular parallelepiped structure, and a length direction of the second limiting block 3222 is perpendicular to the carrier plate 321, so that the second limiting block 3222 is inserted into the corresponding second groove 3214 during use. The third limiting block 3223 is disposed at the third groove 3215, the third limiting block 3223 is configured to be a rectangular parallelepiped structure, a length direction of the third limiting block 3223 is parallel to the carrier plate 321, and a side surface of the third limiting block in the length direction is close to the mounting position. The carrier plate 321 is provided with a plurality of bolt holes along the length direction of the first groove 3213 and the third groove 3215, and the first limiting block 3221 and the third limiting block 3223 are connected to the carrier plate 321 through bolt holes and bolts. The distance between the first limiting block 3221, the second limiting block 3222 and the third limiting block 3223 can be adjusted to adjust the size of the mounting position, so that the test on products with different sizes is met.

The automatic plugging unit 323 is disposed at one end of the carrier 321 close to the front door 31, and the automatic plugging unit 323 is provided with a first cylinder 3231, a slider 3232, a connection block 3233, and a communication terminal 3234. The first cylinder 3231 is disposed on the carrier plate 321, and an output shaft of the first cylinder 3231 is in transmission connection with one side of the slide block 3232. A plurality of positioning holes are formed in the other side of the sliding block 3232, and at least one positioning rod is arranged on one side of the connecting block 3233. The positioning rod is inserted into the positioning hole, and the positions of the connection block 3233 and the communication terminal 3234 are adjusted by inserting a different positioning hole, so that the communication terminal 3234 and the communication unit 311 are accurately aligned. The communication terminal 3234 is snapped onto the connection block 3233, and the first cylinder 3231 is used to drive the communication terminal 3234 to connect or disconnect with the communication unit 311.

Referring to fig. 8 and 9, in the present embodiment, the antenna module 40 includes a supporting base 41, a moving device 42 and an antenna device 43. The supporting base 41 is connected to the inner wall of the cavity, and a space-avoiding groove 411 is formed in the middle of the supporting base 41 and used for avoiding the movement of the antenna device 43. The moving device 42 is provided with an X-axis moving unit 421 and a Y-axis moving unit 422. The X-axis moving unit 421 includes an X-axis motor 4211, an X-axis transmission shaft 4212, a moving belt 4213, an X-axis synchronous belt 4214, and two sets of X-axis bearings 4215. The X-axis motor 4211 is arranged at one end of the supporting seat 41, the moving belt 4213 is arranged on the supporting seat 41 and is located at the same side with the X-axis motor 4211, and an output shaft of the X-axis motor 4211 is in transmission connection with the moving belt 4213. An X-axis timing belt 4214 is provided at the other end of the support base 41, and a set of X-axis bearings 4215 are provided on both the moving belt 4213 and the X-axis timing belt 4214. Two ends of the X-axis transmission shaft 4212 are respectively in transmission connection with a movable belt 4213 and an X-axis synchronous belt 4214. When the X-axis motor 4211 is started, an output shaft of the X-axis motor 4211 drives the movable belt 4213 to rotate, and the movable belt 4213 drives the X-axis transmission shaft 4212 to rotate. The X-axis transmission shaft 4212 is connected with the X-axis synchronous belt 4214 through a synchronous wheel, the other end of the X-axis synchronous belt 4214 is connected through a synchronous idle wheel, the X-axis synchronous wheel is driven to rotate together by rotation of the X-axis transmission shaft 4212, and synchronous rotation of the movable belt 4213 and the X-axis synchronous belt 4214 is achieved.

Referring to fig. 10, the Y-axis moving unit 422 is disposed above the avoiding groove 411, and the Y-axis moving unit 422 includes a Y-axis motor 4221, a connecting plate 4222, a Y-axis moving shaft 4223, a Y-axis bearing 4224, and a Y-axis timing belt 4225. Two ends of a Y-axis moving shaft 4223 are respectively connected with two X-axis bearings 4215, a Y-axis bearing 4224 is sleeved on the Y-axis moving shaft 4223, the Y-axis bearing 4224 is connected with a connecting plate 4222, and the Y-axis bearing 4224 is used for supporting and balancing the connecting plate 4222. The Y-axis motor 4221 is connected with one of the X-axis bearings 4215, an output shaft of the Y-axis motor 4221 is in transmission connection with one end of a Y-axis synchronous belt 4225, the Y-axis synchronous belt 4225 is arranged on a Y-axis moving shaft 4223, and a connecting plate 4222 is in transmission connection with the Y-axis synchronous belt 4225. The Y-axis moving shaft 4223 and the Y-axis motor 4221 are connected with an X-axis bearing 4215, and the moving belt 4213 and the X-axis synchronous belt 4214 drive the Y-axis moving shaft 4223 and the Y-axis motor 4221 to reciprocate along the X axis together. The Y-axis motor 4221 drives a Y-axis synchronous belt 4225 to rotate, and the Y-axis synchronous belt 4225 drives a Y-axis bearing 4224 and a connecting plate 4222 connected with the Y-axis bearing to reciprocate along the Y-axis direction.

Referring to fig. 9 and 11, the antenna device 43 further includes a support frame 431 and a support plate 432, one end of the support frame 431 passes through the avoiding slot 411 and is connected to the connection plate 4222, the other end of the support frame 431 is connected to one side of the support plate 432, and the plurality of antennas 433 are disposed on the other side of the support plate 432. In this embodiment, the number of the antennas 433 is 6, and 6 products can be tested simultaneously according to different frequency bands, so that the testing time is shortened, and the cost is saved. The X-axis moving unit 421 drives the Y-axis moving unit 422 and the antenna device 43 to move together along the X-axis direction, and the Y-axis moving unit 422 drives the antenna device 43 to move along the Y-axis direction. The antenna device 43 can move along the X, Y axis during testing, so as to meet different testing requirements.

Referring to fig. 9, the antenna 433 may be configured in a sheet format. Referring to fig. 11, in order to enable the antenna 433 to freely change the angle of the emitted electromagnetic wave, test the influence of the electromagnetic wave emitted at different angles on the product, and improve the test accuracy, the antenna 433 may further be disposed as a first rod section 4331, a second rod section 4332, and a rotation shaft 4333. The first rod section 4331 is rotatably connected with the second rod section 4332 through a rotating shaft 4333, a clamping groove is formed in the end portion of the first rod section 4331, a fixing rod 4321 corresponding to the clamping groove is further arranged on the supporting plate 432, and the supporting plate 432 and the first rod section 4331 are connected with the clamping groove through the fixing rod 4321 in a buckling mode. The first pole section 4331 is used to enable the antenna 433 to emit electromagnetic waves from any direction, and the angle and height of the emitted electromagnetic waves from the product can be adjusted by rotating the second pole section 4332. The rotation of the first 4331 and second 4332 segments can be adjusted manually or automatically by wireless device control.

The working principle of the filter module with high shielding performance and the corresponding shielding box 10 thereof is as follows:

the operator connects the communication line inside the housing 20 to the output interface 533, and connects the communication line of the external computer and instrument of the housing 20 to the input interface 532. The product is placed on the supporting block 3211, and the positions of the first stopper 3221, the second stopper 3222 and the third stopper 3223 are adjusted, so that the product is fixed by the three, and the product is prevented from moving in the test process. Clicking on the start button 332 drives the motor to move the holding device 32 into the cavity. The first cylinder 3231 drives the slider 3232 to slide, and the slider 3232 moves the communication terminal 3234 toward the communication unit 311, and inserts the communication terminal 3234 into the communication unit 311. The control system controls the X-axis moving unit 421 and the Y-axis moving unit 422 to move in a predetermined direction, and controls the antenna 433 to emit electromagnetic waves to perform a product test. During the test, if an emergency occurs, the test can be stopped by pressing the emergency stop switch 331. After the test is completed, the driving motor moves the clamping device 32 out of the cavity, and the product is taken out to start the test operation of the next round of product.

In an embodiment of the present invention, a filter module with high shielding performance includes an upper cover plate, a lower cover plate, a circuit board, and a conductive material. The upper cover plate is connected with the lower cover plate in a sealing mode, a sealing cavity is formed inside the upper cover plate, and the circuit board is arranged in the sealing cavity. The input interface and the output interface on the circuit board respectively penetrate out of the first through groove and the second through groove and are used for communicating with a computer and instruments outside the shielding box when products are tested in the shielding box, and the testing environment can be ensured to be communicated under a shielding state. The input interface and the output interface are respectively arranged on two sides of the plate main body, and the output interface and the input interface are arranged in a staggered mode, so that the original structural scheme and circuit design are changed, better filtering performance is guaranteed, the direction of electromagnetic waves passing through a structural part can be changed, and better shielding performance is achieved. The invention also comprises a shielding box provided with the filtering module with high shielding performance. The invention ensures good shielding performance and transmission rate, improves the testing precision, and solves the problems of poor shielding effect and low testing precision caused by the fact that the testing interface is a linear structure in the prior art.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A filter module with high shielding performance, comprising:

the upper cover plate is provided with a plurality of first through grooves;

2. The filter module with high shielding performance according to claim 1, wherein the circuit board is further provided with an LC parallel resonator circuit, and the LC parallel resonator circuit is provided with at least two stages.

3. The filter module with high shielding performance as claimed in claim 1, wherein the input interface, the board body, and the output interface in communication connection with the input interface are disposed in a zigzag structure for changing the transmission direction of the electromagnetic wave for information transmission.

4. The filter module with high shielding performance according to claim 1, wherein the conductive material is provided with a third through groove corresponding to the first through groove and the second through groove, and the third through groove, the first through groove and the second through groove have the same size.

5. The filter module with high shielding performance according to claim 4, wherein a plurality of frames are disposed on an inner side of the upper cover plate and an inner side of the lower cover plate, and the frames are disposed around peripheries of the first through groove, the second through groove and the third through groove.

6. The filter module with high shielding performance according to claim 1, wherein the conductive material is a flexible conductive foam.

7. The filter module with high shielding performance according to claim 1, wherein the periphery of the circuit board is provided with a shielding wire, and the shielding wire is hermetically connected with the conductive material.

8. A shielding cage, comprising:

the filtering module with high shielding performance of any one of claims 1 to 7, disposed on one side of the chassis for filtering processing.

9. The shielding box of claim 8, wherein the front door module is provided with a clamping device, a front door cover plate and a driving device, and one side of the front door cover plate is connected with the clamping device and used for sealing the feeding hole; the clamping device is at least provided with one group and is used for placing a plurality of products; the driving device is used for driving the front door cover plate to be far away from or to be tightly attached to the feeding hole.

10. The shielding cage of claim 8, wherein said antenna module comprises:

the supporting seat is connected with the inner wall of the cavity;

the moving device is arranged on the supporting seat and used for driving the antenna device to move; and the number of the first and second groups,

the antenna device is in transmission connection with the mobile device and is provided with a plurality of antennas, and the antennas are used for transmitting electromagnetic waves.