CN116819180B - Device for testing ground impedance of electromagnetic shielding film of single FPC (flexible printed circuit) - Google Patents
Device for testing ground impedance of electromagnetic shielding film of single FPC (flexible printed circuit) Download PDFInfo
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Abstract
The application belongs to the technical field of impedance testing of electromagnetic shielding films, in particular to an impedance testing device for a single FPC (flexible printed circuit) electromagnetic shielding film to ground, which comprises a base, wherein an upright post is fixedly arranged at the center of the top of the base, an electromagnetic signal receiver is arranged at the top of the base, a supporting plate is arranged at the top of the upright post, a lifting handle is arranged at the top of the supporting plate, a fixing mechanism is arranged on the supporting plate, an electromagnetic signal transmitter is connected to the fixing mechanism, a controller is arranged on the right side of the supporting plate, a lantern ring is vertically and slidably arranged on the outer side of the upright post, a supporting ring is rotatably arranged on the outer side of the lantern ring, a power mechanism is arranged on the lantern ring and is connected with the supporting ring, four annular supporting frames are symmetrically arranged on the outer side of the supporting ring, and electromagnetic shielding films are arranged in the four annular supporting frames. The application has simple structure, can carry out impedance test on electromagnetic shielding films with different thicknesses, and is convenient to carry out impedance test by adjusting the height of the electromagnetic shielding films.
Description
Technical Field
The application relates to the technical field of impedance testing of electromagnetic shielding films, in particular to a device for testing the impedance of an electromagnetic shielding film of a single FPC to ground.
Background
According to the electromagnetic induction principle, an electric field and a magnetic field can mutually excite to form electromagnetic waves. When the electronic component works, components such as a capacitor and the like form an electric field, components such as an inductor and the like form a magnetic field, electromagnetic waves can be excited, and useless electromagnetic waves can be induced with the components or electric signals of other electronic components. The electromagnetic shielding film can be used for shielding electromagnetic waves in two ways, namely reflection attenuation, absorption attenuation and the like, and shielding effectiveness can be further enhanced by adopting a mode of overlapping the two principles or overlapping multiple layers of films with the same principle.
Retrieved, publication (bulletin) number: CN109188097a discloses a monolithic FPC's electromagnetic shielding film earth impedance testing arrangement, and it includes electromagnetic shielding film, vertical portion, horizontal portion, recess portion, shielding film break-over point, shielding film test point, and monolithic FPC's electromagnetic shielding film includes vertical portion, horizontal portion, and the right-hand member of horizontal portion has recess portion, and recess portion includes first cell wall, second cell wall, first cell wall, second cell wall mutually perpendicular, its characterized in that: the shielding film conduction point is positioned in the electromagnetic shielding film, the shielding film test point is positioned in the groove part, and the shielding film conduction point is electrically communicated with the shielding film test point. The application can be tested only by one or more exposed test point contact pens; the window area which is conducted with the EMI is extended, and the EMI and grounding effect is measured by measuring the conductivity between the extended point and the ground.
The electromagnetic shielding film impedance testing device in the prior art is inconvenient to conduct impedance testing on electromagnetic shielding films with different thicknesses, meanwhile, is inconvenient to adjust the distance between the electromagnetic shielding films and conduct testing, and is complex in operation.
Disclosure of Invention
The application aims to solve the defects that the impedance testing device for the electromagnetic shielding film in the prior art is inconvenient for testing the impedance of the electromagnetic shielding films with different thicknesses, and meanwhile, the distance between the electromagnetic shielding film and the electromagnetic shielding film is inconvenient to adjust, and the operation is complex.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the utility model provides a monolithic FPC's electromagnetic shield membrane is to ground impedance testing arrangement, the on-line screen storage device comprises a base, the top central point of base puts fixed mounting and has the stand, the top of base is provided with electromagnetic signal receiver, the backup pad is installed on the top of stand, the top of backup pad is provided with the handle, be provided with fixed establishment in the backup pad, be connected with electromagnetic signal transmitter on the fixed establishment, the right side of backup pad is provided with the controller, the outside vertical slidable mounting of stand has the lantern ring, the supporting ring is installed in the outside rotation of lantern ring, be provided with power unit on the lantern ring, power unit links to each other with the supporting ring, the outside symmetry of supporting ring is provided with four annular braced frames, all be provided with electromagnetic shield membrane in four annular braced frames, the end opening of annular braced frame is provided with the inner ring support bar, electromagnetic shield membrane is placed at the top of inner ring support bar, the inner ring support bar is used for supporting electromagnetic shield membrane, four conductive mechanism are all provided with the telescopic link to each other with the bottom fixed block of supporting ring on the backup pad, the top of base has the circular slot on the fixed block, circular slot is installed to the circular slot, circular slot is slided in the circular slot, circular slot is installed with the circular slot, circular slot is connected with two circular slot and two conductive piece bottoms of conductor, two equal circular slot and two electric conductor pieces are connected with the electromagnetic signal receiver.
Further, the fixing mechanism comprises a placement notch, the placement notch is formed in the supporting plate, the electromagnetic signal transmitter is placed in the placement notch, a screw is connected to the supporting plate in a threaded mode, a handle is installed at the outer end of the screw, an extrusion pad is arranged at the inner end of the screw and is abutted to the electromagnetic signal transmitter, and a rubber pad is arranged on the inner wall of the placement notch; the electromagnetic signal transmitter is placed in the placement notch, and then the handle is rotated to push the extrusion pad to fix the electromagnetic signal transmitter through the screw, so that the stability of the electromagnetic signal transmitter can be ensured.
Further, two push rod motors are arranged at the bottom of the supporting plate, and output shafts of the two push rod motors are fixedly arranged at the top of the lantern ring; the two push rod motors can drive the lantern ring to carry out height adjustment, and the lantern ring drives four annular supporting frames through the supporting ring to carry out height adjustment, can adjust the height of electromagnetic shielding film, the guide way has been seted up to the outside of stand, and slidable mounting has the guide block in the guide way, and the guide block is with the inboard fixed mounting of lantern ring, guarantees the vertical removal of lantern ring.
Further, the power mechanism comprises a servo motor, the servo motor is embedded at the outer side of the lantern ring, an annular rack is fixedly arranged at the top of the supporting ring, a gear is arranged on an output shaft of the servo motor and meshed with the annular rack, a limit groove is formed in the inner side of the supporting ring, a limit ring is sleeved at the outer side of the lantern ring, and the limit ring is in sliding connection with the inner wall of the limit groove; the support ring can rotate on the outer side of the lantern ring, the servo motor is started to drive the gear to rotate, and the gear drives the support ring to rotate through the annular rack.
Further, the conductive mechanism comprises an insulating plate, the top end of the insulating plate is fixedly connected with the output end of the telescopic rod, a bridge type conductor is arranged at the bottom of the insulating plate, two conductive blocks are matched with the bridge type conductor, two square blocks are fixedly arranged on the outer side of each round block, two square grooves are formed in the inner wall of each round groove, and the square blocks are in sliding connection with the inner wall of each square groove; the arc-shaped elastic piece provides elastic force for the round block, so that the round block drives the two conductive blocks to be in contact with the bridge type conductor, and the power supply of the electromagnetic signal receiver can be connected.
Further, a stabilizing ring is rotatably arranged on the outer side of the upright post, four insulating plates are fixedly arranged on the outer side of the stabilizing ring, an inner ring groove is formed in the inner side of the stabilizing ring, an inner ring strip is sleeved on the outer side of the upright post, and the inner ring strip is in sliding connection with the inner wall of the inner ring groove; the stabilizing ring can rotate on the outer side of the upright post stably through the support of the inner ring jump.
In the application, the electromagnetic shielding film of the single FPC has the beneficial effects of:
according to the scheme, the electromagnetic shielding films with different thicknesses are stored in the annular supporting frame, the electromagnetic signal emitter is placed in the placement notch, and then the handle is rotated to push the extrusion pad to fix the electromagnetic signal emitter through the screw, so that the stability of the electromagnetic signal emitter can be ensured;
according to the scheme, the servo motor is started to drive the gear to rotate, the gear drives the supporting ring to rotate through the annular rack, the supporting ring drives the four guide mechanisms to do annular motion through the four telescopic rods, the four guide mechanisms rotate under the support of the stabilizing ring, the insulating plate drives the bridge type conductor to do annular motion, the bridge type conductor is contacted with the two conductive blocks, the round block provides elasticity for the round block through the arc-shaped elastic piece, the round block drives the two conductive blocks to be contacted with the bridge type conductor, the power supply of the electromagnetic signal receiver can be connected, the electromagnetic signal transmitter transmits electromagnetic signals to the electromagnetic shielding film, the electromagnetic signals penetrate through the electromagnetic shielding film and are received by the electromagnetic signal receiver, the received signal strength can be directly fed back, the impedance effect of the electromagnetic shielding film is judged, and the test is convenient;
according to the scheme, the supporting ring is controlled to rotate, the four guide mechanisms are driven to do annular motion through the four telescopic rods, the positions of the annular supporting frames are exchanged, the thickness of the electromagnetic shielding film is changed, then the detection is continued, the impedance effect can be judged through the electromagnetic shielding films with different thicknesses, when the electromagnetic shielding films are replaced, the four conductive mechanisms are used for alternately conducting the electromagnetic signal receiver, and when no electromagnetic shielding film moves to the lower part of the electromagnetic signal transmitter, the electromagnetic signal receiver cannot be started;
according to the scheme, the two push rod motors can drive the lantern rings to carry out height adjustment, the lantern rings drive the four annular supporting frames to carry out height adjustment through the supporting rings, the height of the electromagnetic shielding film can be adjusted, then detection is carried out, the impedance effect of the electromagnetic shielding film is judged according to different isolated positions, and the electromagnetic shielding film is convenient to test and has multiple functions;
the application has simple structure, can carry out impedance test on electromagnetic shielding films with different thicknesses, and is convenient to carry out impedance test by adjusting the height of the electromagnetic shielding films.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic shielding film-to-ground impedance testing device for a monolithic FPC according to the present application;
FIG. 2 is a schematic cross-sectional view of FIG. 1 according to the present application;
fig. 3 is a schematic diagram of a part a of an electromagnetic shielding film-to-ground impedance testing device of a monolithic FPC according to the present application;
fig. 4 is a schematic diagram of a B part structure of an electromagnetic shielding film-to-ground impedance testing device of a monolithic FPC according to the present application;
FIG. 5 is a schematic top view of the annular support frame, spring blocks and inner ring support bars according to the present application;
FIG. 6 is a schematic perspective view of the handle, screw and compression pad according to the present application;
fig. 7 is a schematic perspective view of an elastic block according to the present application.
In the figure: 1. a base; 2. an electromagnetic signal receiver; 3. a column; 4. a support plate; 5. a handle; 6. an electromagnetic signal transmitter; 7. a handle; 8. a screw; 9. a controller; 10. a push rod motor; 11. a collar; 12. a guide groove; 13. a guide block; 14. a support ring; 15. a limit groove; 16. a limiting ring; 17. an annular rack; 18. a servo motor; 19. a gear; 20. an annular supporting frame; 21. an inner ring support bar; 22. an elastic groove; 23. a spring; 24. an elastic block; 25. a fixed block; 26. a circular groove; 27. an arc elastic sheet; 28. round blocks; 29. a conductive block; 30. an insulating plate; 31. a bridge conductor; 32. a square block; 33. a square groove; 34. placing the notch; 35. a rubber pad; 36. a squeeze pad; 37. an inclined plane; 38. a telescopic rod; 39. a stabilizing ring; 40. an inner annular strip; 41. an inner ring groove; 42. an electromagnetic shielding film.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present embodiment, not all embodiments.
Referring to fig. 1-7, the application provides an electromagnetic shielding film-to-ground impedance testing device of a monolithic FPC.
Embodiment one: the utility model provides an electromagnetic shielding film ground impedance testing arrangement of monolithic FPC, including base 1, the top central point of base 1 puts fixed mounting has stand 3, the top of base 1 is provided with electromagnetic signal receiver 2, backup pad 4 is installed on the top of stand 3, the top of backup pad 4 is provided with handle 5, be provided with fixed establishment on backup pad 4, be connected with electromagnetic signal transmitter 6 on the fixed establishment, the right side of backup pad 4 is provided with controller 9, the outside vertical slidable mounting of stand 3 has lantern ring 11, the outside of lantern ring 11 rotates and installs supporting ring 14, be provided with power mechanism on lantern ring 11, power mechanism links to each other with supporting ring 14, the outside of supporting ring 14 is provided with four annular supporting frames 20 symmetrically, all be provided with electromagnetic shielding film 42 in four annular supporting frames 20, the bottom mouth of annular supporting frame 20 is provided with inner ring support bar 21, electromagnetic shielding film 42 is placed at the top of inner ring support bar 21, be used for supporting electromagnetic shielding film 42, the outside of stand 3 rotates and installs four conductive mechanisms, all be provided with telescopic link 38 on four conductive mechanisms, four telescopic link blocks 38 are all with the bottom of supporting ring 14, the fixed block 26 and two bottom of base 1 have the fixed blocks 29 to be provided with two circular grooves 29, the circular groove 29 are all connected with two circular grooves 29 are equipped with, the bottom of two circular groove 28, the circular groove 29 is connected with two circular groove 29 is equipped with two circular groove 28, two circular groove 28 is connected with two circular groove 28, and two circular groove 28 is connected with two circular groove 29, and two circular groove 28 is connected with two circular groove, 29 is connected with two circular groove, and 29 is connected with circular groove, and is has two circular groove, and is has and is to electromagnetic and is has and is 4;
specifically, the electromagnetic signal transmitter 6 transmits electromagnetic signals to the electromagnetic shielding film 42, and the electromagnetic signals pass through the electromagnetic shielding film 42 and are received by the electromagnetic signal receiver 2, so that the received signals can be directly fed back to determine the impedance effect of the electromagnetic shielding film 42.
In the embodiment, the fixing mechanism comprises a placement notch 34, the placement notch 34 is formed in the supporting plate 4, the electromagnetic signal emitter 6 is placed in the placement notch 34, a screw 8 is connected to the supporting plate 4 in a threaded mode, a handle 7 is arranged at the outer end of the screw 8, an extrusion pad 36 is arranged at the inner end of the screw 8, the extrusion pad 36 is in contact with the electromagnetic signal emitter 6, and a rubber pad 35 is arranged on the inner wall of the placement notch 34;
specifically, the electromagnetic signal emitter 6 is placed in the placement notch 34, and then the handle 7 is rotated to push the extrusion pad 36 through the screw 8 to fix the electromagnetic signal emitter 6, so that the stability of the electromagnetic signal emitter 6 can be ensured.
In the embodiment, two push rod motors 10 are installed at the bottom of the supporting plate 4, and output shafts of the two push rod motors 10 are fixedly installed with the top of the lantern ring 11;
specifically, two push rod motors 10 can drive the lantern ring 11 and carry out the altitude mixture control, and the lantern ring 11 drives four annular braced frames 20 through holding ring 14 and carries out the altitude mixture control, can adjust the height of electromagnetic shielding membrane 42, guide slot 12 has been seted up in the outside of stand 3, and slidable mounting has guide block 13 in guide slot 12, and guide block 13 and the inboard fixed mounting of lantern ring 11 guarantee the vertical removal of lantern ring 11.
In this embodiment, the conductive mechanism includes an insulating plate 30, the top end of the insulating plate 30 is fixedly connected with the output end of the telescopic rod 38, the bottom of the insulating plate 30 is provided with a bridge conductor 31, two conductive blocks 29 are all matched with the bridge conductor 31, two square blocks 32 are fixedly installed on the outer side of the round block 28, two square grooves 33 are formed on the inner wall of the round groove 26, the square blocks 32 are slidably connected with the inner wall of the square groove 33, a stabilizing ring 39 is rotatably installed on the outer side of the upright post 3, four insulating plates 30 are fixedly installed on the outer side of the stabilizing ring 39, an inner ring groove 41 is formed on the inner side of the stabilizing ring 39, an inner ring strip 40 is sleeved on the outer side of the upright post 3, and the inner ring strip 40 is slidably connected with the inner wall of the inner ring groove 41;
specifically, the arc-shaped elastic piece 27 provides elastic force for the round block 28, so that the round block 28 drives the two conductive blocks 29 to be in contact with the bridge conductor 31, the power supply of the electromagnetic signal receiver 2 can be turned on, and the stabilizing ring 39 can be stably rotated on the outer side of the upright post 3 through the support of the inner ring strip 40.
In the embodiment, the power mechanism comprises a servo motor 18, the servo motor 18 is embedded at the outer side of the lantern ring 11, an annular rack 17 is fixedly arranged at the top of the supporting ring 14, a gear 19 is arranged on an output shaft of the servo motor 18, the gear 19 is meshed with the annular rack 17, a limit groove 15 is formed in the inner side of the supporting ring 14, a limit ring 16 is sleeved at the outer side of the lantern ring 11, and the limit ring 16 is in sliding connection with the inner wall of the limit groove 15;
specifically, the support ring 14 can stably rotate on the outer side of the collar 11, the servo motor 18 is started to drive the gear 19 to rotate, and the gear 19 drives the support ring 14 to rotate through the annular rack 17.
When the electromagnetic signal emitter 6 is used, the electromagnetic shielding films 42 with different thicknesses are stored in the annular supporting frame 20, the electromagnetic signal emitter 6 is placed in the placement notch 34, then the handle 7 is rotated to push the extrusion pad 36 through the screw 8 to fix the electromagnetic signal emitter 6, the stability of the electromagnetic signal emitter 6 can be ensured, the servo motor 18 is started to drive the gear 19 to rotate, the gear 19 drives the supporting ring 14 to rotate through the annular rack 17, the supporting ring 14 drives the four guiding mechanisms to do annular motion through the four telescopic rods 38, the four guiding mechanisms rotate under the support of the stabilizing ring 39, the insulating plate 30 drives the bridge conductor 31 to do annular motion, the bridge conductor 31 is contacted with the two conducting blocks 29, the arc-shaped elastic piece 27 provides elasticity for the round block 28, the round block 28 drives the two conducting blocks 29 to be contacted with the bridge conductor 31, the electromagnetic signal emitter 6 can be connected with the power supply of the electromagnetic signal receiver 2, emits electromagnetic signals to the electromagnetic shielding film 42, the electromagnetic signals penetrate through the electromagnetic shielding film 42 and are received by the electromagnetic signal receiver 2, the received signals can be directly fed back to be strong and weak, the impedance effect of the electromagnetic shielding film 42 is further judged, then the servo motor 18 is continuously started, the supporting ring 14 is controlled to rotate, the supporting ring 14 is driven by the four telescopic rods 38 to do annular movement, the positions of the annular supporting frame 20 are exchanged, the thickness of the electromagnetic shielding film 42 is changed and then the detection is continuously carried out, the impedance effect can be judged by setting the electromagnetic shielding films 42 with different thicknesses, when the electromagnetic shielding film 42 is replaced, the electromagnetic signal receiver 2 is alternately conducted by the four conductive mechanisms, when the electromagnetic shielding film 42 is not moved to the lower part of the electromagnetic signal emitter 6, the electromagnetic signal receiver 2 is not started, simultaneously, the two push rod motors 10 can drive the lantern rings 11 to adjust the height, the lantern rings 11 drive the four annular supporting frames 20 to adjust the height through the supporting rings 14, the height of the electromagnetic shielding film 42 can be adjusted, then detection is carried out, the impedance effect of the electromagnetic shielding film 42 is judged according to different isolated positions, and the device is convenient to test and has multiple functions.
Embodiment two: the difference between the second embodiment and the first embodiment is that: three elastic grooves 22 are formed in the inner side of the annular supporting frame 20, elastic blocks 24 are slidably arranged in the three elastic grooves 22, inclined planes 37 are formed in the outer sides of the three elastic blocks 24, the same springs 23 are arranged between the elastic blocks 24 and the elastic grooves 22, elastic force is provided for the elastic blocks 24 through the springs 23, the elastic blocks 24 can tightly press and fix an electromagnetic shielding film 42, the electromagnetic shielding film 42 can be guaranteed to be placed on the inner side of the annular supporting frame 20, materials and lengths of all structures in the application can be selected according to actual use conditions, the drawing is a schematic structural diagram, and specific actual sizes can be properly adjusted.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art will be able to apply equally to the technical solution of the present application and the inventive concept thereof, within the scope of the present application.
Claims (7)
1. The utility model provides a monolithic FPC's electromagnetic shielding membrane to ground impedance testing arrangement, including base (1), the top central point of base (1) puts fixed mounting has stand (3), the top of base (1) is provided with electromagnetic signal receiver (2), a serial communication port, backup pad (4) are installed on the top of stand (3), the top of backup pad (4) is provided with handle (5), be provided with fixed establishment on backup pad (4), be connected with electromagnetic signal transmitter (6) on the fixed establishment, the right side of backup pad (4) is provided with controller (9), the outside vertical slidable mounting of stand (3) has lantern ring (11), support ring (14) are installed in the outside rotation of lantern ring (11), be provided with power unit on lantern ring (11), power unit links to each other with support ring (14), the outside symmetry of support ring (14) is provided with four annular braced frame (20), all be provided with electromagnetic shielding membrane (42) in four annular braced frame (20), the outside rotation of stand (3) is provided with four conductive mechanisms on four conductive mechanisms, all be provided with telescopic link (38), telescopic link (25) are provided with fixed slot (25) on the top of four braced link (14) and bottom (25) of base (1), a round block (28) is slidably arranged in the round groove (26), an arc-shaped elastic sheet (27) is arranged between the bottom of the round block (28) and the inner wall of the bottom of the round groove (26), two conductive blocks (29) are arranged at the top of the round block (28), the two conductive blocks (29) are matched with a conductive mechanism, and the two conductive blocks (29) are connected with the electromagnetic signal receiver (2); the fixing mechanism comprises a placement notch (34), the placement notch (34) is formed in the supporting plate (4), the electromagnetic signal emitter (6) is placed in the placement notch (34), a screw (8) is connected to the supporting plate (4) in a threaded mode, a handle (7) is arranged at the outer end of the screw (8), an extrusion pad (36) is arranged at the inner end of the screw (8), the extrusion pad (36) is in contact with the electromagnetic signal emitter (6), and a rubber pad (35) is arranged on the inner wall of the placement notch (34); two push rod motors (10) are arranged at the bottom of the supporting plate (4), and output shafts of the two push rod motors (10) are fixedly arranged at the top of the lantern ring (11); the guide groove (12) is formed in the outer side of the upright post (3), the guide block (13) is slidably mounted in the guide groove (12), and the guide block (13) is fixedly mounted on the inner side of the lantern ring (11).
2. The device for testing the impedance of the electromagnetic shielding film of the single FPC to the ground according to claim 1, wherein the power mechanism comprises a servo motor (18), the servo motor (18) is embedded on the outer side of the collar (11), an annular rack (17) is fixedly arranged at the top of the supporting ring (14), a gear (19) is arranged on an output shaft of the servo motor (18), and the gear (19) is meshed with the annular rack (17).
3. The device for testing the impedance of the electromagnetic shielding film of the single FPC to the ground according to claim 1, wherein the inner side of the supporting ring (14) is provided with a limit groove (15), the outer side of the lantern ring (11) is sleeved with a limit ring (16), and the limit ring (16) is in sliding connection with the inner wall of the limit groove (15).
4. The device for testing the impedance to the ground of the electromagnetic shielding film of the single-chip FPC according to claim 1, wherein the conductive mechanism comprises an insulating plate (30), the top end of the insulating plate (30) is fixedly connected with the output end of the telescopic rod (38), a bridge conductor (31) is arranged at the bottom of the insulating plate (30), and two conductive blocks (29) are matched with the bridge conductor (31).
5. The device for testing the impedance to the ground of the electromagnetic shielding film of the single FPC according to claim 4, wherein two square blocks (32) are fixedly arranged on the outer side of the round block (28), two square grooves (33) are formed in the inner wall of the round groove (26), and the square blocks (32) are in sliding connection with the inner wall of the square grooves (33).
6. The device for testing the ground impedance of the electromagnetic shielding film of the single-chip FPC according to claim 4, wherein the outer side of the upright post (3) is rotatably provided with a stabilizing ring (39), four insulating plates (30) are fixedly arranged on the outer side of the stabilizing ring (39), an inner ring groove (41) is formed in the inner side of the stabilizing ring (39), an inner ring strip (40) is sleeved on the outer side of the upright post (3), and the inner ring strip (40) is in sliding connection with the inner wall of the inner ring groove (41).
7. The device for testing the impedance to the ground of the electromagnetic shielding film of the single-chip FPC according to claim 1, wherein the bottom opening of the annular supporting frame (20) is provided with an inner annular supporting bar (21), and the electromagnetic shielding film (42) is placed on the top of the inner annular supporting bar (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311101386.0A CN116819180B (en) | 2023-08-30 | 2023-08-30 | Device for testing ground impedance of electromagnetic shielding film of single FPC (flexible printed circuit) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311101386.0A CN116819180B (en) | 2023-08-30 | 2023-08-30 | Device for testing ground impedance of electromagnetic shielding film of single FPC (flexible printed circuit) |
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| Publication Number | Publication Date |
|---|---|
| CN116819180A CN116819180A (en) | 2023-09-29 |
| CN116819180B true CN116819180B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311101386.0A Active CN116819180B (en) | 2023-08-30 | 2023-08-30 | Device for testing ground impedance of electromagnetic shielding film of single FPC (flexible printed circuit) |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001165982A (en) * | 1999-12-10 | 2001-06-22 | Nec Corp | Measuring apparatus and measuring method for electromagnetic shield |
| JP2011122973A (en) * | 2009-12-11 | 2011-06-23 | Tokyu Construction Co Ltd | Apparatus and method for measuring electromagnetic wave shielding performance |
| CN104483553A (en) * | 2014-12-25 | 2015-04-01 | 上海电器科学研究所（集团）有限公司 | Radio frequency impedance testing device for electromagnetic shielding materials |
| CN112822712A (en) * | 2021-02-06 | 2021-05-18 | 裴玲 | 5G communication signal tester and testing method thereof |
| CN113740226A (en) * | 2021-08-27 | 2021-12-03 | 安徽省产品质量监督检验研究院 | Filter material filtering efficiency and air flow resistance tester |
| CN114441882A (en) * | 2022-01-11 | 2022-05-06 | 中国兵器工业新技术推广研究所 | Electromagnetic shielding material shielding capability testing arrangement |
| CN217276666U (en) * | 2022-02-28 | 2022-08-23 | 廊坊市金装机械设备有限公司 | Performance testing device for pressure sensor production |
| CN218331824U (en) * | 2022-10-17 | 2023-01-17 | 上海高敦精密机械有限公司 | Insulation and voltage resistance testing device |
| CN219266410U (en) * | 2022-11-02 | 2023-06-27 | 信利光电仁寿有限公司 | Measuring plate for measuring grounding performance of electromagnetic shielding film |
-
2023
- 2023-08-30 CN CN202311101386.0A patent/CN116819180B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001165982A (en) * | 1999-12-10 | 2001-06-22 | Nec Corp | Measuring apparatus and measuring method for electromagnetic shield |
| JP2011122973A (en) * | 2009-12-11 | 2011-06-23 | Tokyu Construction Co Ltd | Apparatus and method for measuring electromagnetic wave shielding performance |
| CN104483553A (en) * | 2014-12-25 | 2015-04-01 | 上海电器科学研究所（集团）有限公司 | Radio frequency impedance testing device for electromagnetic shielding materials |
| CN112822712A (en) * | 2021-02-06 | 2021-05-18 | 裴玲 | 5G communication signal tester and testing method thereof |
| CN113740226A (en) * | 2021-08-27 | 2021-12-03 | 安徽省产品质量监督检验研究院 | Filter material filtering efficiency and air flow resistance tester |
| CN114441882A (en) * | 2022-01-11 | 2022-05-06 | 中国兵器工业新技术推广研究所 | Electromagnetic shielding material shielding capability testing arrangement |
| CN217276666U (en) * | 2022-02-28 | 2022-08-23 | 廊坊市金装机械设备有限公司 | Performance testing device for pressure sensor production |
| CN218331824U (en) * | 2022-10-17 | 2023-01-17 | 上海高敦精密机械有限公司 | Insulation and voltage resistance testing device |
| CN219266410U (en) * | 2022-11-02 | 2023-06-27 | 信利光电仁寿有限公司 | Measuring plate for measuring grounding performance of electromagnetic shielding film |
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| CN116819180A (en) | 2023-09-29 |
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