CN209676762U - A kind of EMC shielding case - Google Patents
A kind of EMC shielding case Download PDFInfo
- Publication number
- CN209676762U CN209676762U CN201821590896.3U CN201821590896U CN209676762U CN 209676762 U CN209676762 U CN 209676762U CN 201821590896 U CN201821590896 U CN 201821590896U CN 209676762 U CN209676762 U CN 209676762U
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- emc
- shielding
- shield
- outer frame
- plate
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- 239000011521 glass Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000006261 foam material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000006260 foam Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides a kind of EMC shielding case, including capableing of the outline border of conduction, capable of shielding the barricade of electromagnetism and capable of shielding the shielding strip of electromagnetism.Wherein, barricade is fixed in outline border, and shielding strip is arranged on the inside of outline border between barricade.The lateral surface of outline border is equipped with the connecting component that can be connect with instrument and equipment panel.The face of outline border and instrument and equipment plate contact is equipped with shielding strip.The region that EMC requirement is unable to satisfy in the same electromagnetic environment can be shielded, to improve the EMC performance of equipment entirety.
Description
Technical Field
The utility model belongs to the technical field of rail transit vehicle electricity, concretely relates to EMC shield cover.
Background
With the rapid development of the rail transit industry, more and more electric systems are installed on rail transit vehicles, and electromagnetic interference is more and more serious while convenience is brought to the travel and the life of people. Electromagnetic interference not only can bring influence to people's life, also can threaten the normal work of other relevant electronic equipment. In an actual rail vehicle electrical system, a situation of coexistence of a high electromagnetic load, a high-power energy device and a low-voltage, low-power information device often arises. Meanwhile, the power increase of the electronic equipment also causes the electronic equipment in the electric system of the railway vehicle to generate higher electromagnetic disturbance level during operation, and the electromagnetic disturbance finally affects other electronic equipment and causes the phenomena of failure or performance reduction. Therefore, the problem of protection against electromagnetic compatibility is very important. The electromagnetic compatibility environment in the vehicle is severe due to the fact that the electric and electronic equipment of the rail transit vehicle is various and the type of the electric and electronic equipment is complex. Some devices cannot meet EMC requirements for certain reasons, and may generate electromagnetic interference to other devices, or be affected by electromagnetic interference of other devices in the vehicle, resulting in a fault or performance degradation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide an EMC shield cover, can shield the region that can't satisfy the EMC requirement in same electromagnetic environment to improve the holistic EMC performance of equipment.
In order to solve the technical problem, the utility model provides a technical scheme does:
an EMC shield case includes a conductive bezel, a shield plate capable of shielding electromagnetism, and a shield strip capable of shielding electromagnetism. The shielding plate is fixed in the outer frame, and the shielding strip is arranged between the inner side of the outer frame and the shielding plate. The outer side of the outer frame is provided with a connecting part which can be connected with the instrument panel. The surface of the outer frame contacting with the instrument panel is provided with a shielding strip.
According to the utility model discloses an EMC shield cover through shielding strip transitional coupling between shield cover and the frame, forms soft connecing and keeps conducting electric continuity, connects on the instrument equipment panel through adapting unit on the frame, shielding strip and equipment panel contact on the face of frame and instrument equipment panel contact, whole EMC shield cover wraps the equipment panel and need shields the region, forms inclosed shielding space and makes equipment can normal operating and not produce serious electromagnetic interference to its any equipment. Therefore, the EMC shielding problem of the area which does not meet the EMC requirement on the equipment can be solved.
With respect to the above technical solution, further improvements as described below can be made.
According to the utility model discloses an EMC shielded enclosure, in a preferred embodiment, including the fixed part that is used for fixed shield plate, the fixed part has respectively with shield plate and the inboard formation complex part of frame, is equipped with the shielding strip between fixed part and the shield plate.
The installation and the positioning of the shielding plate can be stable and reliable by arranging the fixing component.
In particular, in a preferred embodiment, the fixing element is configured as an elongated plate structure.
The fixing part which is constructed into a strip-shaped plate structure is simple and convenient to install, simple in structure and low in production and manufacturing cost.
In particular, in a preferred embodiment, the shielding plate is made of a transparent glass material.
The transparent glass shield is convenient to observe, and the running state of the equipment can be observed outside at any time.
Further, in a preferred embodiment, the connecting member comprises a hinge.
The hinge structure can bring the buffer function when the shield cover is closed, and the noise that sends and avoid causing damage to equipment when the shield cover is closed with the equipment panel collision is reduced to the at utmost.
Further, in a preferred embodiment, the connecting member includes a latch, and the instrument panel is provided with an automatic latch. Through the structural style who sets up hasp and automatic kayser, convenient operation is simple, and when the device of operation shielding area, directly open the shield cover and can operate. After the operation is finished, the shielding cover is directly closed, and the lock catch can be automatically locked on the lock catch. Therefore, it is possible to extremely conveniently perform maintenance of the device that needs to be frequently operated.
Further, in a preferred embodiment, the connection members are disposed at the top and bottom of the outer frame, respectively. The EMC shielding case can be opened and closed simply and conveniently by arranging the connecting parts at the top and the bottom of the outer frame to be connected with the equipment panel.
Further, in a preferred embodiment, an insulating handle is provided on the outside of the outer frame. When the instrument and equipment panel shielding area needs to be operated, the EMC shielding cover can be opened by applying force through the insulating handle by hand, and the operation is convenient and simple.
Further, in a preferred embodiment, the shielding strip is made of a conductive foam material.
The conductive foam is very light in material, has electromagnetic shielding performance, has good electrostatic protection performance, has no dependence on environmental humidity, and has good corrosion resistance and oxidation resistance, so the conductive foam is particularly suitable for the shielding strip in the EMC shielding case.
Further, in a preferred embodiment, the EMC shielding cover is opened and closed at 90 degrees, so that interference of the shielding cover on other devices on the instrument and equipment panel due to too large opening and closing angle can be avoided.
Specifically, in a preferred embodiment, the outer frame is formed by rivet fastening using a sheet metal bend. The outer frame made of the metal plate through bending has the advantages of simple structure, low production and manufacturing cost and good electric conductivity. In addition, the outer frame is fixed by rivets so that the appearance of the outer frame is beautiful.
Compared with the prior art, the utility model has the advantages of: the area which can not meet the EMC requirement in the same electromagnetic environment can be shielded, and therefore the integral EMC performance of the equipment is improved.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 schematically shows a state where an EMC shield case of an embodiment of the present invention is arranged closed on an instrument panel;
fig. 2 schematically shows a state where the EMC shield case of the embodiment of the present invention is arranged on the instrument panel in an open state;
fig. 3 schematically shows an overall structure of an EMC shield case according to an embodiment of the present invention;
fig. 4 schematically shows a partial structure of the EMC shield case according to the embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific examples, without thereby limiting the scope of the invention.
Fig. 1 schematically shows a state where the EMC shield case 10 of the embodiment of the present invention is arranged closed on the instrument panel 100. Fig. 2 schematically shows a state where the EMC shield case 10 of the embodiment of the present invention is arranged on the instrument panel 100 in an open state. Fig. 3 schematically shows the overall structure of the EMC shield case 10 according to the embodiment of the present invention. Fig. 4 schematically shows a partial structure of the EMC shield case 10 according to the embodiment of the present invention.
As shown in fig. 1 to 4, an EMC shield case 10 according to an embodiment of the present invention includes an outer frame 1 capable of conducting electricity, a shield plate 2 capable of shielding electromagnetism, and a shield strip 3 capable of shielding electromagnetism. Wherein, the shielding plate 2 is fixed in the outer frame 1, and the shielding strip 3 is arranged between the inner side of the outer frame 1 and the shielding plate 2. The outer side of the outer frame 1 is provided with a connecting member 4 capable of connecting to the instrument panel 100. The surface of the outer frame 1 contacting the instrument panel 100 is provided with a shield strip 3. According to the utility model discloses EMC shielded enclosure, through shielding strip transitional coupling between shielded enclosure and the frame, form soft connecing and keep switching on electric continuity, connect on the instrument equipment panel through adapting unit on the frame, shielding strip and equipment panel contact on the face of frame and instrument equipment panel contact, whole EMC shielded enclosure wraps the equipment panel and needs the shielding region, form inclosed shielding space and make equipment can normal operating and do not produce serious electromagnetic interference to its any equipment. Therefore, the EMC shielding problem of the area which does not meet the EMC requirement on the equipment can be solved. Specifically, in a preferred embodiment, the outer frame 1 is formed by rivet fastening using a sheet metal bend. The outer frame made of the metal plate through bending has the advantages of simple structure, low production and manufacturing cost and good electric conductivity. In addition, the outer frame is fixed by the pulling rivet, so that the appearance of the outer frame is attractive.
In particular, in a preferred embodiment, the shielding plate 2 is made of a transparent glass material. The transparent glass shield is convenient to observe, and the running state of the equipment can be observed outside at any time. In a preferred embodiment, the shielding strip 3 is made of a conductive foam material. The conductive foam is very light in material, has electromagnetic shielding performance, has good electrostatic protection performance, has no dependence on environmental humidity, and has good corrosion resistance and oxidation resistance, so the conductive foam is particularly suitable for the shielding strip in the EMC shielding case.
As shown in fig. 3, in a preferred embodiment, the EMC shield case of the embodiment of the present invention includes a fixing member 5 for fixing the shield plate 2, the fixing member 5 has a portion that forms a fit with the shield plate 2 and the inner side of the outer frame 1, and the shield strip 3 is provided between the fixing member 5 and the shield plate 2. The installation and the positioning of the shielding plate can be stable and reliable by arranging the fixing component. In particular, in a preferred embodiment, the fixing element 5 is configured as an elongated plate structure. The fixing part which is constructed into a strip-shaped plate structure is simple and convenient to install, simple in structure and low in production and manufacturing cost. Preferably, the fixing member 5 is fixed on the inner side edge of the outer frame 1 by a pull rivet.
As shown in fig. 2 and 3, in particular, in a preferred embodiment, the connection members 4 are disposed at the top and bottom of the outer frame 1, respectively. The EMC shielding case can be opened and closed simply and conveniently by arranging the connecting parts at the top and the bottom of the outer frame to be connected with the equipment panel. In an embodiment not shown, it is easily understood that the connection members 4 may be provided on both left and right sides of the outer frame 1. Further, in a preferred embodiment, the EMC shield 10 is opened and closed at 90 degrees, so that interference of the shield with other devices on the panel of the equipment due to too large opening and closing angle can be avoided. In a preferred embodiment, the connecting means 4 arranged at the top of the casing 1 comprise a hinge 6. The hinge structure can bring the buffer function when the shield cover is closed, and the noise that sends and avoid causing damage to equipment when the shield cover is closed with the equipment panel collision is reduced to the at utmost. In a preferred embodiment, the connecting member 4 disposed at the bottom of the outer frame 1 includes a latch 7, and the latch 7 is fixed to the inner side of the bottom of the outer frame 1 by a pull rivet. Accordingly, the instrument panel 100 is provided with an automatic latch 8. Through the structural style who sets up hasp and automatic kayser, convenient operation is simple, and when the device of operation shielding area, directly open the shield cover and can operate. After the operation is finished, the shielding cover is directly closed, and the lock catch can be automatically locked on the lock catch. Therefore, it is possible to extremely conveniently perform maintenance of the device that needs to be frequently operated.
Further, as shown in fig. 3, in a preferred embodiment, an insulating handle 9 is provided on the outside of the outer frame 1. When the instrument and equipment panel shielding area needs to be operated, the EMC shielding cover can be opened by applying force through the insulating handle by hand, and the operation is convenient and simple.
As shown in fig. 1 and fig. 2, the EMC shielding case of the embodiment of the present invention is used as follows:
when the instrument panel is mounted on the instrument enclosure, the EMC shield 10 is connected to the instrument panel 100 by the top hinge 6, and the EMC shield 10 can be opened/closed at 90 °. When the instrument equipment case is in normal operation, the EMC shielding case 10 is in a closed state, the latch 7 at the bottom of the outer frame 1 is fixed with the automatic latch 8 arranged on the instrument equipment panel 100, the conductive foam is arranged between the outer frame of the EMC shielding case and the instrument equipment panel 100, the whole EMC shielding case 10 covers the area needing shielding on the instrument equipment panel 100, and a closed shielding space is formed to enable the equipment to normally operate and not generate serious electromagnetic interference on any equipment. Meanwhile, the running state of the instrument equipment case can be observed through the transparent glass shielding plate. When the shielded area on the instrument panel 100 needs to be operated, the EMC shield case 10 can be opened upward by applying a force by hand through the insulated handle 9, and the latch 7 is disengaged from the automatic latch 8, which is the EMC shield case open state.
According to the above embodiment, it is seen that the utility model relates to an EMC shield cover can shield the region that can't satisfy the EMC requirement in same electromagnetic environment to improve the holistic EMC performance of equipment.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. An EMC shielding case is characterized by comprising a conductive outer frame, a shielding plate and a shielding strip, wherein the shielding plate can shield electromagnetism; wherein,
the shielding plate is fixed in the outer frame, and the shielding strip is arranged between the inner side of the outer frame and the shielding plate;
the outer side surface of the outer frame is provided with a connecting part which can be connected with a panel of the instrument equipment; and the shielding strip is arranged on the surface of the outer frame contacting with the instrument panel.
2. The EMC shield case of claim 1, including a fixing member for fixing the shield plate, the fixing member having portions respectively forming a fit with the shield plate and an inner side of the outer frame, the shield strip being provided between the fixing member and the shield plate.
3. The EMC shield of claim 2, wherein the securing member is configured as an elongated plate structure.
4. The EMC shield case of any of claims 1-3, wherein the shield plate is made of a transparent glass material.
5. EMC shield case of any of claims 1-3, wherein the connection part comprises a hinge.
6. The EMC shield case of any of claims 1-3, wherein the connection component includes a latch and the instrumentation panel is provided with an automatic latch.
7. The EMC shield case of any of claims 1 to 3, wherein the connection parts are respectively arranged at a top and a bottom of the bezel.
8. The EMC shield case of any of claims 1-3, wherein an insulated handle is provided on an outside of the bezel.
9. The EMC shield case of any of claims 1-3, wherein the shield bars are made of a conductive foam material.
10. The EMC shielding cage of any of claims 1-3, wherein the bezel is formed by rivet fastening using sheet metal bends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821590896.3U CN209676762U (en) | 2018-09-28 | 2018-09-28 | A kind of EMC shielding case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821590896.3U CN209676762U (en) | 2018-09-28 | 2018-09-28 | A kind of EMC shielding case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209676762U true CN209676762U (en) | 2019-11-22 |
Family
ID=68560696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821590896.3U Active CN209676762U (en) | 2018-09-28 | 2018-09-28 | A kind of EMC shielding case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209676762U (en) |
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2018
- 2018-09-28 CN CN201821590896.3U patent/CN209676762U/en active Active
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