CN117794213B - Electromagnetic shielding device for electronic equipment - Google Patents
Electromagnetic shielding device for electronic equipment Download PDFInfo
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- CN117794213B CN117794213B CN202311843061.XA CN202311843061A CN117794213B CN 117794213 B CN117794213 B CN 117794213B CN 202311843061 A CN202311843061 A CN 202311843061A CN 117794213 B CN117794213 B CN 117794213B
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- fixedly arranged
- leakage indicating
- leakage
- hose
- shielding cover
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- 238000012544 monitoring process Methods 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 13
- 239000011553 magnetic fluid Substances 0.000 claims description 6
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to the technical field of electromagnetic shielding, and discloses an electromagnetic shielding device of electronic equipment. The invention particularly provides the electromagnetic shielding device of the electronic equipment, which can monitor the electromagnetic radiation leakage condition in real time and indicate that the electromagnetic radiation leakage originates from the internal equipment or the outside.
Description
Technical Field
The invention relates to the technical field of electromagnetic shielding, in particular to an electromagnetic shielding device of electronic equipment.
Background
In order to prevent interference of external electric, magnetic or electromagnetic fields with the internal equipment or to avoid influence of the electromagnetic fields of the equipment on the outside, the equipment is placed in a closed or nearly closed metal shell or metal mesh enclosure, which is called a shield.
An invention patent with the application number 202210173311.2 discloses an electromagnetic compatibility shielding shell and a method, and particularly discloses a technical scheme of 'comprising a hard bearing shell, a bearing lining, an insulating isolation layer, an oscillating circuit, a shielding conductor, a pulse power supply, an electrostatic power supply, an electromagnet and a driving circuit'. Although the technical scheme of the application has the function of electromagnetic shielding according to the electromagnetic radiation characteristics of the equipment to be protected, the electromagnetic radiation leakage condition of the electromagnetic shielding device cannot be monitored in real time during application.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an electromagnetic shielding device of electronic equipment, and in order to solve the technical problem that the electromagnetic radiation leakage condition cannot be monitored in real time in the prior art, the invention provides the electromagnetic shielding device of the electronic equipment, which can monitor the electromagnetic radiation leakage condition in real time and indicate that the electromagnetic radiation leakage originates from internal equipment or outside.
The technical scheme adopted by the invention is as follows: the magnetic leakage indicator comprises a base, an inner shielding cover, an outer shielding cover and a magnetic leakage indicating assembly, wherein the inner shielding cover is fixedly arranged on the base, the outer shielding cover is fixedly arranged on the base, the inner shielding cover is positioned in the outer shielding cover, and the magnetic leakage indicating assembly is arranged above the base.
Further, the magnetic leakage indicating assembly comprises a long shaft, a locating rack, supporting legs, an inner leakage indicating ring, an inner leakage indicating pin, an outer leakage indicating ring, an outer leakage indicating pin and a real-time monitoring unit, wherein the supporting legs are fixedly arranged at the top end of the outer shielding case, the locating rack is fixedly arranged in the supporting legs, the long shaft is rotationally arranged at the center of the locating rack, a lower chute and an upper chute are arranged on the long shaft, the inner leakage indicating ring is rotationally arranged on the inner leakage indicating ring and is fixedly arranged in the lower chute in a sliding clamping manner, the outer leakage indicating ring is rotationally arranged on the inner leakage indicating ring, the outer leakage indicating pin is fixedly arranged in the outer leakage indicating ring and is fixedly arranged in the upper chute in a sliding clamping manner, and the real-time monitoring unit is arranged between the outer shielding case and the inner shielding case.
Further, the real-time monitoring unit comprises a lower annular track, an outer hose, an inner hose, a monitoring pipe, a sliding seat and a lateral blocking piece, wherein the lower annular track is fixedly arranged on the base, the sliding seat is slidably arranged on the lower annular track, the outer hose is fixedly arranged between the sliding seat and the outer leakage indicating ring, the inner hose is fixedly arranged between the sliding seat and the inner leakage indicating ring, the lateral blocking piece is fixedly arranged on the sliding seat, the inner hose and the outer hose are both in fit connection with the lateral blocking piece, the monitoring pipe is fixedly arranged between the sliding seat and the lateral blocking piece, and the inner side and the outer side of the monitoring pipe are respectively in fit with the inner hose and the outer hose.
Furthermore, the magnetic fluid is filled in the monitoring tube.
Further, the magnetic leakage indicating assembly further comprises two triggering buzzers, the two triggering buzzers are respectively and fixedly arranged at the uppermost end of the lower chute and the uppermost end of the upper chute, and the two triggering buzzers are respectively in sliding abutting connection with the inner leakage indicating pin and the outer leakage indicating pin.
Further, the magnetic leakage indicating assembly further comprises an upper driving wheel, a lower driving wheel and two guiding telescopic rods, wherein the upper driving wheel is fixedly arranged on the locating frame, one guiding telescopic rod is fixedly arranged between the upper driving wheel and the inner leakage indicating ring, the lower driving wheel is fixedly arranged on the locating frame, and the other guiding telescopic rod is fixedly arranged between the lower driving wheel and the outer leakage indicating ring.
Further, the magnetic leakage indicating assembly further comprises a motor, a first gear and a second gear, wherein the motor is fixedly arranged on the outer shielding cover, the first gear is fixedly arranged on the output end of the motor, the second gear is fixedly arranged on the top end of the long shaft, and the first gear is in meshed connection with the second gear.
Further, the top end of the outer shielding cover is detachably provided with an upper cover shell.
Further, the outer shield and the inner shield are concentrically disposed.
The beneficial effects obtained by the invention by adopting the structure are as follows:
1. through the design of real-time supervision unit, the monitoring pipe that has the magnetic fluid between outer shield cover and the interior shield cover can take place unidirectional extrusion deformation under the circumstances that has electromagnetic leakage based on the magnetic field intensity who leaks to the deformation direction of monitoring pipe and inside magnetic fluid always tends towards the big direction of magnetic field intensity, thereby can in time feed back out the magnetic leakage condition and instruct electromagnetic leakage to come from external or internal equipment according to the deformation volume of outer hose or interior hose.
2. The design of the motor, the first gear and the second gear in the magnetic leakage indicating assembly enables the real-time monitoring unit below to have the motion capability, so that the electromagnetic shielding effect of the inner shielding cover and the outer shielding cover in all directions can be continuously inspected.
Drawings
Fig. 1 is a schematic perspective view of an electromagnetic shielding device of an electronic device according to the present invention;
FIG. 2 is a schematic cross-sectional view of an electromagnetic shielding device for an electronic device according to the present invention;
FIG. 3 is a schematic perspective view of a magnetic leak indicator assembly of the present invention;
FIG. 4 is a schematic perspective view of a real-time monitoring unit according to the present invention;
FIG. 5 is an enlarged view of a portion A of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic cross-sectional view of a portion of the components within the upper housing of the present invention;
FIG. 7 is an enlarged view of a portion B of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic perspective view of an inner leak-indicating ring and an outer leak-indicating ring of the present invention;
fig. 9 is a perspective view of the long axis of the present invention.
Wherein 1, base, 2, inner shield, 3, outer shield, 4, upper housing, 5, magnetic leakage indicating component, 501, motor, 502, gear one, 503, gear two, 504, long shaft, 505, locating rack, 506, stabilizer blade, 507, lower chute, 508, upper chute, 509, inner leakage indicating ring, 510, inner leakage indicating pin, 511, outer leakage indicating ring, 512, outer leakage indicating pin, 513, triggering buzzer, 514, upper driving wheel, 515, lower driving wheel, 516, guiding telescopic rod, 6, real-time monitoring unit, 601, lower annular track, 602, outer hose, 603, inner hose, 604, monitoring tube, 605, lateral blocking piece, 606, slide.
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-9, the magnetic leakage indicator comprises a base 1, an inner shielding cover 2, an outer shielding cover 3 and a magnetic leakage indicator assembly 5, wherein the inner shielding cover 2 is fixedly arranged on the base 1, the outer shielding cover 3 is fixedly arranged on the base 1, the inner shielding cover 2 is positioned in the outer shielding cover 3, and the magnetic leakage indicator assembly 5 is arranged above the base 1.
As shown in fig. 3 to 9, the magnetic leakage indicating assembly 5 includes a long shaft 504, a positioning frame 505, a supporting leg 506, an inner leakage indicating ring 509, an inner leakage indicating pin 510, an outer leakage indicating ring 511, an outer leakage indicating pin 512 and a real-time monitoring unit 6, the supporting leg 506 is fixedly arranged at the top end of the outer shielding case 3, the positioning frame 505 is fixedly arranged in the supporting leg 506, the long shaft 504 is rotationally arranged at the center of the positioning frame 505, a lower chute 507 and an upper chute 508 are arranged on the long shaft 504, the inner leakage indicating ring 509 is rotationally arranged on the long shaft 504, the inner leakage indicating pin 510 is fixedly arranged on the inner leakage indicating ring 509 and is in sliding clamping with the lower chute 507, the outer leakage indicating ring 511 is rotationally arranged on the inner leakage indicating ring 509, the outer leakage indicating pin 512 is fixedly arranged in the outer leakage indicating ring 511 and is in sliding clamping with the upper chute 508, and the real-time monitoring unit 6 is arranged between the outer shielding case 3 and the inner shielding case 2.
As shown in fig. 4 and 5, the real-time monitoring unit 6 includes a lower annular track 601, an outer hose 602, an inner hose 603, a monitoring tube 604, a sliding seat 606 and a lateral blocking member 605, the lower annular track 601 is fixedly arranged on the base 1, the sliding seat 606 is slidably arranged on the lower annular track 601, the outer hose 602 is fixedly arranged between the sliding seat 606 and the outer leakage indicating ring 511, the inner hose 603 is fixedly arranged between the sliding seat 606 and the inner leakage indicating ring 509, the lateral blocking member 605 is fixedly arranged on the sliding seat 606, the inner hose 603 and the outer hose 602 are respectively connected with the lateral blocking member 605 in a bonding manner, the monitoring tube 604 is fixedly arranged between the sliding seat 606 and the lateral blocking member 605, and the inner side and the outer side of the monitoring tube 604 are respectively bonded with the inner hose 603 and the outer hose 602.
As shown in fig. 1 to 9, the magnetic fluid is filled in the monitoring tube 604.
As shown in fig. 7, the magnetic leakage indicating assembly 5 further includes two trigger buzzers 513, the two trigger buzzers 513 are respectively fixedly arranged at the uppermost end of the lower chute 507 and the uppermost end of the upper chute 508, and the two trigger buzzers 513 are respectively in sliding abutting connection with the inner leakage indicating pin 510 and the outer leakage indicating pin 512.
As shown in fig. 3 to 7, the magnetic leakage indicating assembly 5 further includes an upper driving wheel 514, a lower driving wheel 515 and two guiding telescopic rods 516, wherein the upper driving wheel 514 is fixedly arranged on the positioning frame 505, one guiding telescopic rod 516 is fixedly arranged between the upper driving wheel 514 and the inner leakage indicating ring 509, the lower driving wheel 515 is fixedly arranged on the positioning frame 505, and the other guiding telescopic rod 516 is fixedly arranged between the lower driving wheel 515 and the outer leakage indicating ring 511.
As shown in fig. 3, the magnetic leakage indicating assembly 5 further includes a motor 501, a first gear 502 and a second gear 503, where the motor 501 is fixedly disposed on the outer shielding cover 3, the first gear 502 is fixedly disposed on an output end of the motor 501, the second gear 503 is fixedly disposed on a top end of the long shaft 504, and the first gear 502 and the second gear 503 are in meshed connection.
As shown in fig. 1, the top end of the outer shield 3 is detachably provided with an upper housing 4.
As shown in fig. 1, the outer shield 3 and the inner shield 2 are concentrically arranged.
In particular use, the device to be shielded is placed in the inner shield 2 and the motor 501 is started and the upper housing 4 is closed. During operation of the internal device, the magnetic leak indicator assembly 5 remains in an operational state and an alarm is raised when an electromagnetic leak occurs. The specific principle is as follows: when electromagnetic leakage occurs between the inner shielding case 2 and the outer shielding case 3, the magnetic fluid filled in the monitoring tube 604 deforms under the action of the magnetic field, and drives the monitoring tube 604 to squeeze towards the side with high magnetic field strength (i.e. the source direction of electromagnetic leakage), so that the inner hose 603 or the outer hose 602 is squeezed.
Taking the example of the inner hose 603 being compressed, the compressed reduced volume of the inner hose 603 will transfer pressure to the inner leak indicator ring 509 and push the inner leak indicator ring 509 to compress and guide the telescoping rod 516 upward relative to the long axis 504 as the inner hose 603 fits into the lateral seal 605. In the process of moving up the inner leakage indicating ring 509, since the inner leakage indicating pin 510 has a sliding engagement relationship with the lower chute 507 on the long shaft 504, the inner leakage indicating ring and the leakage indicating pin also have a rotational motion relative to the long shaft 504 in the process of moving up, so that the inner leakage indicating pin 510 and the trigger buzzer 513 in the lower chute 507 are driven to collide, and the trigger buzzer 513 gives an alarm to the outside. After the operator opens the upper housing 4 after receiving the alarm, and observes that the alarm sound originates from the trigger buzzer 513 in the lower chute 507, it can be determined that the cause of the electromagnetic leakage is that the inner shield 2 fails to properly shield the electromagnetic radiation of the internal equipment.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (3)
1. An electromagnetic shielding device for electronic equipment, which is characterized in that: the magnetic leakage indicator comprises a base (1), an inner shielding cover (2), an outer shielding cover (3) and a magnetic leakage indicator assembly (5), wherein the inner shielding cover (2) is fixedly arranged on the base (1), the outer shielding cover (3) is fixedly arranged on the base (1), the inner shielding cover (2) is positioned in the outer shielding cover (3), and the magnetic leakage indicator assembly (5) is arranged above the base (1);
The magnetic leakage indicating assembly (5) comprises a long shaft (504), a positioning frame (505), supporting legs (506), an inner leakage indicating ring (509), an inner leakage indicating pin (510), an outer leakage indicating ring (511), an outer leakage indicating pin (512) and a real-time monitoring unit (6), wherein the supporting legs (506) are fixedly arranged at the top ends of the outer shielding covers (3), the positioning frame (505) is fixedly arranged in the supporting legs (506), the long shaft (504) is rotationally arranged at the center of the positioning frame (505), a lower chute (507) and an upper chute (508) are arranged on the long shaft (504), the inner leakage indicating ring (509) is rotationally arranged on the long shaft (504), the inner leakage indicating pin (510) is fixedly arranged on the inner leakage indicating ring (509) and is slidably clamped in the lower chute (507), the outer leakage indicating pin (512) is fixedly arranged in the outer leakage indicating ring (511) and is slidably clamped in the upper chute (508), and the real-time monitoring unit (6) is arranged between the outer shielding covers (3) and the inner chute (2);
The real-time monitoring unit (6) comprises a lower annular track (601), an outer hose (602), an inner hose (603), a monitoring tube (604), a sliding seat (606) and a lateral blocking piece (605), wherein the lower annular track (601) is fixedly arranged on the base (1), the sliding seat (606) is slidably arranged on the lower annular track (601), the outer hose (602) is fixedly arranged between the sliding seat (606) and an outer leakage indicating ring (511), the inner hose (603) is fixedly arranged between the sliding seat (606) and the inner leakage indicating ring (509), the lateral blocking piece (605) is fixedly arranged on the sliding seat (606), the inner hose (603) and the outer hose (602) are both connected with the lateral blocking piece (605) in a bonding mode, the monitoring tube (604) is fixedly arranged between the sliding seat (606) and the lateral blocking piece (605), and the inner side and the outer side of the monitoring tube (604) are respectively bonded with the inner hose (603) and the outer hose (602);
magnetic fluid is filled in the monitoring tube (604);
the magnetic leakage indicating assembly (5) further comprises two triggering buzzers (513), the two triggering buzzers (513) are respectively and fixedly arranged at the uppermost end of the lower chute (507) and the uppermost end of the upper chute (508), and the two triggering buzzers (513) are respectively in sliding abutting connection with the inner leakage indicating pin (510) and the outer leakage indicating pin (512);
The magnetic leakage indicating assembly (5) further comprises an upper driving wheel (514), a lower driving wheel (515) and two guiding telescopic rods (516), wherein the upper driving wheel (514) is fixedly arranged on the positioning frame (505), one guiding telescopic rod (516) is fixedly arranged between the upper driving wheel (514) and the inner leakage indicating ring (509), the lower driving wheel (515) is fixedly arranged on the positioning frame (505), and the other guiding telescopic rod (516) is fixedly arranged between the lower driving wheel (515) and the outer leakage indicating ring (511);
The magnetic leakage indicating assembly (5) further comprises a motor (501), a first gear (502) and a second gear (503), wherein the motor (501) is fixedly arranged on the outer shielding cover (3), the first gear (502) is fixedly arranged on the output end of the motor (501), the second gear (503) is fixedly arranged on the top end of the long shaft (504), and the first gear (502) is meshed with the second gear (503).
2. An electromagnetic shielding device for an electronic apparatus according to claim 1, wherein: the top end of the outer shielding cover (3) is detachably provided with an upper cover shell (4).
3. An electromagnetic shielding device for an electronic apparatus according to claim 2, wherein: the outer shielding cover (3) and the inner shielding cover (2) are concentrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311843061.XA CN117794213B (en) | 2023-12-29 | 2023-12-29 | Electromagnetic shielding device for electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311843061.XA CN117794213B (en) | 2023-12-29 | 2023-12-29 | Electromagnetic shielding device for electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN117794213A CN117794213A (en) | 2024-03-29 |
| CN117794213B true CN117794213B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311843061.XA Active CN117794213B (en) | 2023-12-29 | 2023-12-29 | Electromagnetic shielding device for electronic equipment |
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| CN (1) | CN117794213B (en) |
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