CN211352979U - Electromagnetic interference shielding device and cabinet - Google Patents
Electromagnetic interference shielding device and cabinet Download PDFInfo
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- CN211352979U CN211352979U CN202020199658.0U CN202020199658U CN211352979U CN 211352979 U CN211352979 U CN 211352979U CN 202020199658 U CN202020199658 U CN 202020199658U CN 211352979 U CN211352979 U CN 211352979U
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Abstract
The utility model discloses a shielding electromagnetic interference device and rack relates to the electromagnetic interference field, a shielding electromagnetic interference device, include: a top cover plate (1), a bottom plate (11) and a side plate; the top cover plate (1), the bottom plate (11) and the side plates form a metal shielding space. The problem of damage to systems and equipment caused by magnetic interference is solved.
Description
Technical Field
The utility model relates to an electromagnetic interference field, a shielding electromagnetic interference device and rack specifically says so.
Background
The PLC cabinet, the UPS cabinet and the automatic control system cabinet which are used in the market at present are all ordinary cabinet bodies, all the cabinet body frame structures are assembled by standard sectional materials, then the sealing plates are fixed by left and right bolts, door plates are hinged to the front and the back, and the like.
Meanwhile, the crossed row lines of the strong and weak current cables also enable mutual interference among the strong and weak current cables due to electromagnetic waves generated by the strong and weak current cables, and peak voltage caused by the electromagnetic interference enables the impurity concentration of a certain point in an emitter junction and a collector junction to be increased, so that breakdown or internal short circuit of a transistor is caused.
Disclosure of Invention
In view of this, the utility model provides a shield electromagnetic interference device and rack to solve the problem of the injury of magnetic interference to system, equipment.
In a first aspect, the present invention provides a device for shielding electromagnetic interference, including:
a top cover plate, a bottom plate and a side plate;
the top cover plate, the bottom plate and the side plates form a metal shielding space.
Preferably, the electromagnetic interference shielding apparatus further includes:
an electromagnetic shielding conductive sealing rubber strip;
the top cover plate, the bottom plate and the side plates are sealed by the electromagnetic shielding conductive sealing rubber strips to form the metal shielding space.
Preferably, the side plate is provided with a door, the door is a door plate, and the periphery of the door plate is sealed by an electromagnetic shielding conductive sealing rubber strip;
the door is used for installing electrical components in the electromagnetic interference shielding device and cleaning sundries in the electromagnetic interference shielding device.
Preferably, the door comprises: an upper door plate and a lower sealing door;
the upper door plate is arranged on the upper side of the door, and the lower sealing door is arranged on the lower side of the door;
the upper door plate is used for installing electrical components in the electromagnetic interference shielding device;
and the lower sealing door is used for cleaning sundries in the electromagnetic interference shielding device.
Preferably, the electromagnetic interference shielding device is also internally provided with a plurality of layers of spacing plates and/or a plurality of element mounting plates;
the plurality of layers of spacing plates and/or the plurality of element mounting plates are fixed on the side plates.
Preferably, the electromagnetic interference shielding apparatus further includes: a bolt;
the plurality of layers of spacing plates and/or the plurality of element mounting plates are fixed on the side plates through the bolts.
Preferably, the electromagnetic interference shielding apparatus further includes:
a grounding mechanism;
the grounding mechanism is used for providing grounding for electrical components in the electromagnetic interference shielding device;
and/or the top cover plate is provided with a top cover plate wire inlet hole;
and/or the bottom plate is provided with a bottom plate wire inlet hole.
Preferably, the grounding mechanism includes: electrical ground and meter ground;
the electric ground is used for grounding the power supply;
and the instrument ground is used for grounding the instrument.
Preferably, the electromagnetic interference shielding device is also internally provided with a plurality of element mounting plates;
the plurality of element mounting plates are connected with the grounding mechanism through insulators or brackets.
In a second aspect, the present invention provides a cabinet, including: such as the electromagnetic interference shielding device.
The utility model discloses following beneficial effect has at least:
the utility model provides a shielding electromagnetic interference device and rack to solve the problem of the injury of magnetic interference to system, equipment.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a left (right) view of an electromagnetic interference shielding apparatus or cabinet according to an embodiment of the present invention;
fig. 2 is a top view of an electromagnetic interference shielding apparatus or cabinet according to an embodiment of the present invention;
fig. 3 is a cross-sectional view along a-a direction in fig. 2 according to the embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Fig. 1 is a left (right) view of an electromagnetic interference shielding apparatus or a cabinet according to an embodiment of the present invention. As shown in fig. 1, an electromagnetic interference shielding apparatus includes: a top cover plate 1, a bottom plate 11 and side plates; the top cover plate 1, the bottom plate 11 and the side plates form a metal shielding space. The problem of damage to systems and equipment caused by magnetic interference is solved.
In fig. 1, the electromagnetic interference shielding apparatus further includes: an electromagnetic shielding conductive sealing rubber strip; the top cover plate 1, the bottom plate 11 and the peripheries of the side plates are sealed through the electromagnetic shielding conductive sealing rubber strips to form the metal shielding space. Wherein, the top cover plate 1, the bottom plate 11 and the side plate (cabinet) are all metal, and the electromagnetic shielding conductive sealing rubber strip connects the whole cabinet together in a sealing way.
The embodiment of the utility model provides an in, the lamina tecti 1 the usable second rectangle electromagnetic shield of bottom plate electrically conducts joint strip 2 with the curb plate seals.
The utility model discloses an in the embodiment, the curb plate is for controlling whole curb plate 3, include: the periphery of the right integral side plate and the left integral side plate, the top cover plate 1, the bottom plate 11, the right integral side plate and the left integral side plate are sealed through the electromagnetic shielding conductive sealing rubber strips to form the metal shielding space.
In fig. 1, the top cover plate 1 has top cover plate wire inlet holes 1a, and/or the bottom plate 11 has bottom plate wire inlet holes 11 a. The power line and the signal line are connected with the power supply and the electric element of the electromagnetic interference shielding device through the wire inlet hole 1a of the top cover plate.
In fig. 1, the side plate is provided with a door, the door is a door plate, and the periphery of the door plate is sealed by an electromagnetic shielding conductive sealing rubber strip; the door is used for installing electrical components in the electromagnetic interference shielding device and cleaning sundries in the electromagnetic interference shielding device.
In fig. 1, the door includes: an upper door plate 7 and a lower sealing door 10; the upper door plate 7 is arranged on the upper side of the door, and the lower sealing door 10 is arranged on the lower side of the door; the upper door plate 7 is used for installing electrical components in the electromagnetic interference shielding device; the lower sealing door 10 is used for cleaning sundries in the electromagnetic interference shielding device.
In an embodiment of the present invention, the upper door panel 7 may be a front upper door panel and/or a rear upper door panel of the side panel. The lower door 10 may be a front lower door and/or a rear lower door of the side panel.
In the embodiment of the utility model, the periphery of the upper door plate 7 is sealed by a U-shaped electromagnetic shielding conductive sealing rubber strip 8; the lower door 10 can be sealed by a second rectangular electromagnetic shielding conductive sealing rubber strip 12.
In fig. 1, the electromagnetic interference shielding device also has several layers of spacing plates 5 and/or several component mounting plates 6 inside; the layers of partition plates 5 and/or the component mounting plates 6 are fixed to the side plates.
In the embodiment of the present invention, electrical components, such as a network switch or a mobile hard disk, can be placed or installed on the plurality of layers of partition boards 5. The plurality of component mounting boards 6 may mount a CPU module or an IO module or the like.
In fig. 1, the electromagnetic interference shielding apparatus further includes: a bolt; the plurality of layers of partition plates 5 and/or the plurality of element mounting plates 6 are fixed on the side plates by the bolts.
In an embodiment of the present invention, the bolts may be selected from carriage bolts 4, and the plurality of layers of partition boards 5 and/or the plurality of component mounting boards 6 are fixed on the side boards through the carriage bolts 4.
In the embodiment of the present invention, the number of the plurality of layers of partition boards 5 is 3, and the number of the plurality of component mounting boards 6 is 1.
Fig. 2 is a top view of an electromagnetic interference shielding apparatus or a cabinet according to an embodiment of the present invention. Fig. 3 is a cross-sectional view along a-a direction in fig. 2 according to the embodiment of the present invention. As shown in fig. 1 to 3, the electromagnetic interference shielding apparatus further includes: a grounding mechanism; the grounding mechanism is used for providing grounding for electrical components in the electromagnetic interference shielding device.
In fig. 1, the electromagnetic interference shielding apparatus, the grounding mechanism, includes: an electrical ground 14 (PE) and a meter ground 15 (FE); the electric ground 14 is used for power grounding; and the instrument ground 15 is used for grounding the instrument.
In fig. 1, the electromagnetic interference shielding apparatus also has several component mounting plates 6 inside; the component mounting plates 6 are connected to the grounding mechanism through insulators or brackets.
In an embodiment of the present invention, an insulator or a bracket includes: a first insulator or bracket 13b and a second insulator or bracket 13a, one ends of the first insulator or bracket 13b and the second insulator or bracket 13a being connected to the component mounting boards 6, respectively, and the other ends of the first insulator or bracket 13b and the second insulator or bracket 13a having an electrical ground 14 (PE) and a meter ground 15 (FE), respectively.
The utility model discloses still provide a rack, include: the electromagnetic interference shielding device or the electromagnetic interference shielding device is a cabinet structure.
The assembly process of the present invention is described in detail with reference to fig. 1-3:
the left and right integral side plates 3 are formed by plate shearing, stamping and bending according to design drawings and technical requirements, and then are connected and fixed by front and rear upper and lower girder bolts to assemble the appearance of the cabinet body.
The single-sided colloid of the first rectangular electromagnetic shielding conductive sealant strip 2 in the figure 1 is firmly adhered to the top cover plate 1 and is installed on the upper part of the cabinet body by using self-tapping screws and hanging rings; the interlayer partition 5 and the component mounting plate 6 in fig. 1 are fixed to the left and right integrated side plates 3 by carriage bolts 4.
In fig. 1, the front upper door panel and/or the rear upper door panel of the upper door panel 7 are connected to the left and right integrated side panels 3 by hinges, and a U-shaped electromagnetic shielding conductive sealing rubber strip 8 is embedded between the front upper door panel and/or the rear upper door panel of the upper door panel 7 and the doorways of the left and right integrated side panels 3.
In fig. 1, a third rectangular electromagnetic shielding conductive sealing rubber strip 9 is adhered to the front lower sealing door and/or the rear lower sealing door of the lower sealing door 10 with a single-sided adhesive, and then connected to the left and right integrated side plates 3 with self-tapping bolts.
In fig. 1, a second rectangular electromagnetic shielding conductive sealing rubber strip 12 is provided with a single-sided adhesive and is firmly adhered to a bottom plate 11, and then a self-tapping bolt is fixed at the bottom, so that the whole cabinet body forms a continuous conductor, and the interference of internal and external electromagnetic waves to equipment is effectively prevented.
The utility model discloses simple process manufacture, the electromagnetism is kept apart the effect and is obvious, greatly reduced the fortune dimension cost of equipment, improved equipment and be service life, to environment and human harmless, electromagnetic interference keeps apart the cabinet not only the appearance pleasing to the eye, and the function is also very multiple, and the protection level is also higher than ordinary cabinet body, can be applicable to the place of various high electromagnetism.
In order to achieve better electromagnetic isolation, the electrical ground 14 (PE) and the instrument ground 15 (FE) shown in fig. 2 and 3 are fixed to the component mounting board 4 by using insulators or brackets, so that the instrument ground, the protection ground, the signal ground and the like are effectively separated.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An EMI shield, comprising:
a top cover plate (1), a bottom plate (11) and a side plate;
the top cover plate (1), the bottom plate (11) and the side plates form a metal shielding space.
2. The EMI shield as set forth in claim 1, further comprising:
an electromagnetic shielding conductive sealing rubber strip;
the top cover plate (1), the bottom plate (11) and the periphery of the side plate are sealed through the electromagnetic shielding conductive sealing rubber strip to form the metal shielding space.
3. The EMI shielding apparatus according to claim 1 or 2, wherein:
the side plate is provided with a door, the door is a door plate, and the periphery of the door plate is sealed by an electromagnetic shielding conductive sealing rubber strip;
the door is used for installing electrical components in the electromagnetic interference shielding device and cleaning sundries in the electromagnetic interference shielding device.
4. The EMI shield as set forth in claim 3, wherein:
the door, comprising: an upper door plate and a lower sealing door;
the upper door plate is arranged on the upper side of the door, and the lower sealing door is arranged on the lower side of the door;
the upper door plate is used for installing electrical components in the electromagnetic interference shielding device;
and the lower sealing door is used for cleaning sundries in the electromagnetic interference shielding device.
5. The EMI shielding device according to claim 1 or 2, characterized in that it further has several layers of spacing plates (5) and/or several component mounting plates (6) inside;
the layers of spacing plates (5) and/or the element mounting plates (6) are fixed on the side plates.
6. The EMI shield as set forth in claim 5, further comprising: a bolt;
the plurality of layers of spacing plates (5) and/or the plurality of element mounting plates (6) are fixed on the side plates through the bolts.
7. The EMI shield as set forth in claim 1, 2, 4 or 6, further comprising:
a grounding mechanism; the grounding mechanism is used for providing grounding for electrical components in the electromagnetic interference shielding device;
and/or the top cover plate (1) is provided with a top cover plate wire inlet hole (1 a);
and/or the bottom plate (11) is provided with a bottom plate wire inlet hole (11 a).
8. The EMI shield as set forth in claim 7, wherein said grounding mechanism includes: an electrical ground (14) and a meter ground (15);
the electrical ground (14) is used for power grounding;
the instrument ground (15) is used for grounding the instrument.
9. The EMI shielding device according to claim 7, wherein said EMI shielding device further has a plurality of component mounting plates (6) inside;
the component mounting plates (6) are connected with the grounding mechanism through insulators or brackets.
10. A cabinet, comprising: the EMI shielding apparatus of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199658.0U CN211352979U (en) | 2020-02-15 | 2020-02-15 | Electromagnetic interference shielding device and cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020199658.0U CN211352979U (en) | 2020-02-15 | 2020-02-15 | Electromagnetic interference shielding device and cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211352979U true CN211352979U (en) | 2020-08-25 |
Family
ID=72099879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020199658.0U Active CN211352979U (en) | 2020-02-15 | 2020-02-15 | Electromagnetic interference shielding device and cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211352979U (en) |
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2020
- 2020-02-15 CN CN202020199658.0U patent/CN211352979U/en active Active
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