CN217363680U - Composite high-efficiency electromagnetic shielding isolation cabin - Google Patents

Abstract

The utility model discloses a high-efficient electromagnetic shield of combined type isolation cabin, including electrically conductive cabin, electrically conductive lid, magnetic conduction cabin, magnetic conduction lid, insulating cylinder and insulating reference column, the magnetic conduction lid is connected with the open end in magnetic conduction cabin, and insulating cylinder suit is outside the magnetic conduction cabin, and electrically conductive cabin suit is outside the insulating cylinder, and electrically conductive lid is connected with the open end in electrically conductive cabin, on the bulkhead in electrically conductive cabin, be equipped with a plurality of positioning hole and a plurality of insulating reference column from outside to inside on the section of thick bamboo wall of insulating cylinder and the bulkhead in magnetic conduction cabin respectively and pass corresponding positioning hole, and insulating reference column is equipped with axial threading through-hole. The utility model discloses a set up the electrically conductive cabin and the magnetic conduction cabin of inside and outside suit and keep apart through insulator between the two, utilize the magnetic conduction cabin to effectively shield low frequency magnetic field and keep apart, utilize electrically conductive cabin to effectively shield high frequency electromagnetic field and keep apart, improved the electromagnetic shield efficiency in the broadband, produced the electromagnetic mutual interference problem when having solved traffic, direct current and the integrated application of micro-signal.

Description

Composite high-efficiency electromagnetic shielding isolation cabin

Technical Field

The utility model relates to an electromagnetic shield isolating device especially relates to a high-efficient electromagnetic shield cofferdam of combined type.

Background

Electromagnetic shielding and isolation are common applications of electronic equipment, and in practical application, a cable or an electronic element is subjected to shielding and isolation treatment of a high-frequency electromagnetic field or a low-frequency electromagnetic field according to needs. An electromagnetic shielding isolation capsule is a device specially used for shielding and isolating electromagnetic fields.

The traditional electromagnetic shielding isolation cabin is generally isolated by a single metal shell or a metal layer, the mode has good shielding and isolating effects on a high-frequency electromagnetic field, but the shielding effect on a low-frequency electromagnetic field is poor, and particularly when a large current exists in an internal cable, if necessary shielding measures are not taken, the generated low-frequency electromagnetic field is easy to interfere with other signals, so that equipment works abnormally.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can effectively shield and keep apart high-frequency electromagnetic field and low-frequency electromagnetic field's high-efficient electromagnetic shield isolation cabin of combined type for solving above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides a high-efficient electromagnetic shield isolation capsule of combined type, includes electrically conductive cabin, the electrically conductive lid of high conductivity, the magnetic conduction cabin of high magnetic conductivity, the magnetic conduction lid of high magnetic conductivity, insulating barrel and insulating reference column of insulating, the magnetic conduction lid with the open end in magnetic conduction cabin is connected, insulating barrel suit is in outside the magnetic conduction cabin, electrically conductive cabin suit is in outside the insulating barrel, electrically conductive lid with the open end in electrically conductive cabin is connected, on the bulkhead in electrically conductive cabin, on the section of thick bamboo wall in insulating barrel with be equipped with a plurality of positioning hole and a plurality of respectively on the bulkhead in magnetic conduction cabin the insulating reference column passes the correspondence from outside to inside positioning hole, insulating reference column is equipped with axial threading through-hole.

Preferably, in order to achieve a better positioning effect on each component and further reduce the electromagnetic radiation area, a plurality of conductive compartment through holes are circumferentially arranged on a cylindrical bulkhead of the conductive compartment, a plurality of magnetic conduction compartment through holes are circumferentially arranged on a cylindrical bulkhead of the magnetic conduction compartment, a plurality of barrel through holes are circumferentially arranged on a cylindrical wall of the insulating barrel, the plurality of conductive compartment through holes, the plurality of magnetic conduction compartment through holes, the plurality of barrel through holes and the plurality of insulating positioning columns are in one-to-one correspondence with one another, and each insulating positioning column respectively penetrates through the corresponding conductive compartment through hole, the corresponding barrel through hole and the corresponding magnetic conduction compartment through hole from outside to inside.

Preferably, for convenience of application, the conductive cabin through holes, the magnetic conduction cabin through holes, the cylinder through holes and the insulation positioning columns are six and are uniformly distributed along the circumferential direction.

Preferably, for convenience of installation, a plurality of bosses are arranged on the outer wall of the conductive cabin along the circumferential direction, and installation holes are formed in the bosses.

Preferably, in order to enable the connection between the components to be more stable, epoxy resin is coated between the inner wall of the conductive cabin and the outer wall of the insulating cylinder body and between the inner wall of the insulating cylinder body and the outer wall of the magnetic conduction cabin respectively.

Preferably, in order to realize good conductivity and magnetic conductivity, the conductive cabin is an aluminum alloy cabin, the conductive cover is an aluminum alloy cover, the magnetic conductive cabin is a permalloy cabin, and the magnetic conductive cover is a permalloy cover.

The beneficial effects of the utility model reside in that:

the utility model discloses a set up the electrically conductive cabin and the magnetic conduction cabin of inside and outside suit and keep apart through insulating barrel between the two, utilize the magnetic conduction cabin to effectively shield the isolation to low frequency magnetic field, utilize electrically conductive cabin to effectively shield the isolation to high frequency electromagnetic field, improved the electromagnetic shield efficiency in the broadband, produced the electromagnetic mutual interference problem when having solved friendship, direct current and the integrated application of micro-signal.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the composite high-efficiency electromagnetic shielding isolation capsule of the present invention before assembly;

fig. 2 is a schematic view of the assembled composite high-efficiency electromagnetic shielding isolation cabin.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the high-efficient electromagnetic shield of combined type keeps apart the cabin and includes electrically conductive cabin 3 of high conductibility, the electrically conductive lid 8 of high conductibility, the magnetic conduction cabin 4 of high magnetic permeability, the magnetic conduction lid 5 of high magnetic permeability, insulating insulator barrel 7 and insulating reference column 2, threaded connection is passed through with the open end in magnetic conduction cabin 4 to magnetic conduction lid 5, insulator barrel 7 suit is outside magnetic conduction cabin 4, electrically conductive cabin 3 suit is outside insulator barrel 7, electrically conductive lid 8 passes through threaded connection with the open end in electrically conductive cabin 3, on the bulkhead of electrically conductive cabin 3, be equipped with respectively on the section of thick bamboo wall of insulator barrel 7 and on the bulkhead in magnetic conduction cabin 4 a plurality of positioning hole and a plurality of insulating reference column 2 by outer and interior the correspondence positioning hole, insulating reference column 2 are equipped with axial threading through-hole. Preferably, a plurality of conductive compartment through holes (not marked in the figure) are circumferentially arranged on the bulkhead of the cylindrical conductive compartment 3, a plurality of magnetic compartment through holes (not visible in the figure) are circumferentially arranged on the bulkhead of the cylindrical magnetic compartment 4, a plurality of barrel through holes (not marked in the figure) are circumferentially arranged on the barrel wall of the cylindrical insulating barrel 7, the plurality of conductive compartment through holes, the plurality of magnetic compartment through holes, the plurality of barrel through holes and the plurality of insulating positioning columns 2 are in one-to-one correspondence with each other, and each insulating positioning column 2 respectively penetrates through the corresponding conductive compartment through hole, the barrel through hole and the magnetic compartment through hole from outside to inside; the number of the conductive cabin through holes, the number of the magnetic conduction cabin through holes, the number of the cylinder body through holes and the number of the insulation positioning columns 2 are six and are uniformly distributed along the circumferential direction; a plurality of bosses 6 are arranged on the outer wall of the conductive cabin 3 along the circumferential direction, and mounting holes are formed on the bosses 6; epoxy resin (not visible in the figure) is respectively coated between the inner wall of the conductive cabin 3 and the outer wall of the insulating cylinder 7 and between the inner wall of the insulating cylinder 7 and the outer wall of the magnetic conduction cabin 4; the conductive cabin 3 is an aluminum alloy cabin, the conductive cover 8 is an aluminum alloy cover, the magnetic conductive cabin 4 is a permalloy cabin, and the magnetic conductive cover 5 is a permalloy cover.

As shown in fig. 1 and 2, when in use, an electronic component is placed in a magnetic conduction cabin 4, six signal lines 1 of three input signals and three output signals respectively pass through threading through holes of six insulation positioning columns 2 and are correspondingly connected with the electronic component in the magnetic conduction cabin 4, the magnetic conduction cabin 4 and the magnetic conduction cover 5 made of high magnetic conductivity materials are used for shielding and isolating a low-frequency magnetic field, the conductive cabin 3 and the conductive cover 8 made of high electric conductivity materials are used for shielding and isolating a high-frequency electromagnetic field, and meanwhile, the signal lines 1 are distributed on different planes, so that the electromagnetic radiation area is effectively reduced. The composite high-efficiency electromagnetic shielding isolation cabin can improve the electromagnetic shielding efficiency by more than 30 dB.

Above-mentioned embodiment is only the preferred embodiment of the utility model, and it is not right the utility model discloses technical scheme's restriction, as long as do not pass through creative work can be realized on the basis of above-mentioned embodiment's technical scheme, all should regard as falling into the utility model discloses a right protection within range.

Claims (6)

1. A high-efficient electromagnetic shield of combined type isolation cabin which characterized in that: the high-conductivity electromagnetic shielding device comprises a high-conductivity conductive cabin, a high-conductivity conductive cover, a high-permeability magnetic conduction cabin, a high-permeability magnetic conduction cover, an insulating cylinder and an insulating positioning column, wherein the high-conductivity conductive cabin, the high-conductivity conductive cover, the high-permeability magnetic conduction cabin, the insulating cylinder and the insulating positioning column are connected, the magnetic conduction cover is connected with the open end of the magnetic conduction cabin, the insulating cylinder is sleeved outside the magnetic conduction cabin, the conductive cabin is sleeved outside the insulating cylinder, the conductive cover is connected with the open end of the conductive cabin, a plurality of positioning through holes and a plurality of positioning columns are arranged on the bulkhead of the conductive cabin, the wall of the insulating cylinder and the bulkhead of the magnetic conduction cabin respectively and penetrate through the corresponding positioning through holes from outside to inside, and the insulating positioning column is provided with an axial threading through hole.

2. The compound efficient electromagnetically shielded isolation capsule of claim 1, wherein: the cylindrical conductive cabin is provided with a plurality of conductive cabin through holes along the circumferential direction on the cabin wall of the conductive cabin, the cylindrical conductive cabin is provided with a plurality of magnetic conduction cabin through holes along the circumferential direction on the cabin wall of the magnetic conduction cabin, the cylindrical insulating cylinder is provided with a plurality of cylinder through holes along the circumferential direction on the cylinder wall of the insulating cylinder, the conductive cabin through holes are formed in a plurality of the magnetic conduction cabin through holes, the cylinder through holes are formed in a plurality of the insulating positioning columns in a one-to-one correspondence mode, and each insulating positioning column penetrates through the conductive cabin through holes, the cylinder through holes and the magnetic conduction cabin through holes from outside to inside.

3. The compound efficient electromagnetically shielded isolation capsule of claim 2, wherein: the conductive cabin through hole, the magnetic conduction cabin through hole, the barrel through hole and the insulation positioning column are six and are uniformly distributed along the circumferential direction.

4. The compound high-efficiency electromagnetic shielding isolation capsule of claim 1, 2 or 3, wherein: a plurality of bosses are arranged on the outer wall of the conductive cabin along the circumferential direction, and mounting holes are formed in the bosses.

5. The compound high-efficiency electromagnetic shielding isolation capsule of claim 1, 2 or 3, wherein: epoxy resin is coated between the inner wall of the conductive cabin and the outer wall of the insulating cylinder body and between the inner wall of the insulating cylinder body and the outer wall of the magnetic conduction cabin respectively.

6. The compound high-efficiency electromagnetic shielding isolation capsule of claim 1, 2 or 3, wherein: the conductive cabin is an aluminum alloy cabin, the conductive cover is an aluminum alloy cover, the magnetic conductive cabin is a permalloy cabin, and the magnetic conductive cover is a permalloy cover.

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