CN202076390U - Filtering device and electronic device - Google Patents
Filtering device and electronic device Download PDFInfo
- Publication number
- CN202076390U CN202076390U CN2011200393534U CN201120039353U CN202076390U CN 202076390 U CN202076390 U CN 202076390U CN 2011200393534 U CN2011200393534 U CN 2011200393534U CN 201120039353 U CN201120039353 U CN 201120039353U CN 202076390 U CN202076390 U CN 202076390U
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- filter
- metal shell
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- electromagnetic radiation
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Abstract
The utility model provides a filtering device and an electronic device. The filtering device comprises a metal housing (10) and a filter. A power supply input terminal (12) and a power supply output terminal (14) are disposed outside the metal housing (10). The filter is arranged inside the metal housing (10). One end of the filter is connected with the power supply input terminal (12), and the other end of the filter is connected with the power supply output terminal (14). The above technical scheme provided by the utility model helps to solve problems that exist in the prior art, wherein the problems are that a circuit for reducing the electromagnetic radiation is complex, the cost is high, and the filtering effect for a high frequency band is poor. Therefore, the filtering device and the electronic device of the utility model enable the electromagnetic radiation to be reduced easily, and exhibit the low cost and a fine filtering effect for a high frequency band.
Description
Technical field
The utility model relates to the communications field, in particular to a kind of filter and electronic equipment.
Background technology
The electromagnetic radiation harassing and wrecking are meant electronic equipment electromagenetic wave radiation spatially, and it is followed the electronic equipment operate as normal and produces.The electromagnetic radiation harassing and wrecking all have potential or direct harm to people and equipment.Low intensive electromagnetic radiation is little to the influence of humans and animals, but also has potential harm.Electromagnetic radiation then is significantly to the influence of other electronic equipment, for example causes variety of problems such as signal oscillating, data transmission fault.
The mode of many at present employing inductance and electric capacity makes up multistage appearance sense filter circuit, reduces radiated emission.This kind circuit complexity, element is many, cost is high, the more important thing is existence to low-frequency range filtration efficiency height, but to the problem of high band filter effect difference.At the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
The utility model content
In correlation technique, it is higher and to problems such as the high band filter effect are relatively poor to reduce circuit more complicated, the cost of electromagnetic radiation, and the utility model provides a kind of filter and electronic equipment, one of to address the above problem at least.
According to an aspect of the present utility model, a kind of filter is provided, comprising: metal shell and filter; The metal shell outer setting has power input and power output end; Filter is arranged at metal shell inside, and an end of filter is connected with power input, and the other end of filter is connected with power output end.
According on the other hand of the present utility model, a kind of electronic equipment is provided, comprising: above-described filter.
The utility model, by at filter and power line arranged outside metal shell, it is higher and to problems such as the high band filter effect are relatively poor to have solved the circuit more complicated, the cost that reduce electromagnetic radiation in the correlation technique, and then reached the reduction electromagnetic radiation and realize simply, cost is lower and to high band filter effect effect preferably.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the filter structural representation according to the utility model embodiment;
Fig. 2 is another installation site structural representation according to the syndeton of the utility model embodiment;
Fig. 3 is based on filter user mode schematic diagram embodiment illustrated in fig. 1;
Fig. 4 is based on filter user mode schematic diagram embodiment illustrated in fig. 2.
Embodiment
Hereinafter will describe the utility model with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
For solving in the correlation technique, it is higher and to problems such as the high band filter effect are relatively poor to reduce circuit more complicated, the cost of electromagnetic radiation, and following examples are considered from radiation source, to reduce the electromagnetic radiation of electronic equipment largely.Be coupled in the power line because the main path of the electromagnetic radiation of electronic equipment is the electromagnetic wave or the high-frequency noise of device interior, power line is in the past external radiation of device external then.Therefore the filter that provides of following examples, the filtering from power line with electromagnetic signal or high-frequency noise is with the external electromagnetic radiation harassing and wrecking of reduction equipment.Be described below in conjunction with accompanying drawing and related embodiment:
Fig. 1 is the filter structural representation according to the utility model embodiment.As shown in Figure 1, this filter comprises: metal shell 10 and filter, and metal shell 10 outer setting have power input 12 and power output end 14; Filter is arranged at described metal shell 10 inside, and an end of filter is connected with power input 12, and the other end of filter is connected with power output end 14.
When concrete the application, as shown in Figure 1, power connector and filter package can be arrived in the airtight metal case, power supply is inserted by a side (being power input 12) by connector, exports by an other side (being power output end 14).Above-mentioned filter can adopt feedthrough electric capacity.Like this, airtight metal case has been brought into play shielding action, and the internal electromagnetic radiation of equipment is blocked by metal shell 10, has guaranteed that electromagnetic radiation can't be coupled in the feedthrough electric capacity and power connector of metal shell 10 inside.
In concrete application process, above-mentioned metal shell 10 surfaces are ground plane, and high-frequency noise can enter among the ground level by metal shell 10 surfaces, and can not be coupled to the space.
As noted earlier, the filter in the present embodiment can comprise: feedthrough electric capacity, owing to be conventional design, therefore realize comparatively simple, easy to utilize.
Because the filter in the present embodiment generally is applied in the electronic equipment, therefore, in the present embodiment, the outer setting of metal shell 10 has syndeton 16, is used for being connected with external device.
In preferred implementation process, above-mentioned syndeton 16 is two, is arranged at a side of metal shell 10 outsides or relative both sides, and above-mentioned syndeton 16 can be the journal stirrup structure.Wherein, syndeton 16 be positioned at the specific implementation of the relative both sides of metal shell 10 can be referring to accompanying drawing 2.In actual application, because journal stirrup position difference, mounting means is also inequality.Concrete mounting means is as follows:
Mounting means 1, as shown in Figure 3, journal stirrup is the rear portion of metal shell 10 at filter, near pcb board.Filter one side contacts with panel of the board 301, and the surface 101 of filter metal shell 10 closely contacts with metal shielding board 302, and metal shell 10 both can be brought into play fixation with the contact-making surface of metal shielding board 302, can be used as ground plane again.By ground plane, electric capacity is high-frequency noise filtering from power line, and high-frequency signal ground plane thus inserts in the earth.Circuit board 303 is installed in the metal shielding board 302, and power supply comes from filter through lead 305, is connected with power output end 14.Being cooperatively interacted by journal stirrup 304 and screw is fixed together the metal shielding board 302 of filter and veneer, and when being inserted into attaching plug in the filter, the pressure that filter bore is discharged in the metal shielding board by screw.This kind mode advantage is journal stirrup to be installed only take filter end direction space.
Mounting means 2, as shown in Figure 4, journal stirrup 304 is positioned at metal shell 10 both sides.This kind mode advantage is journal stirrup to be installed only take space, filter both sides, does not take veneer fore-and-aft direction space.
In concrete application process, above-mentioned metal shell 10 adopts the steel nickel plating technology to make.Metal shell 10 adopts the technology of steel nickel plating, has both guaranteed electrical connectivity, has guaranteed that again metal case can not get rusty, and has reached double effects.
In order to prevent power input 12 and attaching plug wrong, power input 12 adopts error-proof structure.In preferred implementation process, the cross section of error-proof structure is trapezoidal.Specifically as shown in Figure 1, an end of electric connector (power input 12) adopts trapezium structure, and top and bottom are not isometric, when attaching plug is instead inserted, can't insert, and has reached anti-reverse purpose.
In addition, because above-mentioned filter generally is used in combination with electronic equipment in concrete application process, therefore, present embodiment provides a kind of electronic equipment, comprising: above-described filter.Adopt the electronic equipment of above-mentioned filter, can effectively prevent electromagnetic interference.
In sum, the foregoing description, by at filter and power line arranged outside metal shell, it is higher and to problems such as the high band filter effect are relatively poor to have solved the circuit more complicated, the cost that reduce electromagnetic radiation in the correlation technique, and then reached the reduction electromagnetic radiation and realize simply, cost is lower and to high band filter effect effect preferably.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. a filter is characterized in that, comprising: metal shell (10) and filter;
Described metal shell (10) outer setting has power input (12) and power output end (14);
Described filter is arranged at described metal shell (10) inside, and an end of described filter is connected with described power input (12), and the other end of described filter is connected with described power output end (14).
2. filter according to claim 1 is characterized in that, described filter comprises: feedthrough electric capacity.
3. filter according to claim 1 is characterized in that, the outer setting of described metal shell (10) has syndeton (16), is used for being connected with external device.
4. filter according to claim 3 is characterized in that, described syndeton (16) is two, is arranged at outside side of described metal shell (10) or relative both sides.
5. according to claim 3 or 4 described filters, it is characterized in that described syndeton (16) is an ear structure.
6. according to each described filter of claim 1 to 4, it is characterized in that described metal shell (10) adopts the steel nickel plating technology to make.
7. according to each described filter of claim 1 to 4, it is characterized in that described power input (12) adopts error-proof structure.
8. filter according to claim 7 is characterized in that the cross section of described error-proof structure is trapezoidal.
9. an electronic equipment is characterized in that, comprising: each described filter of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200393534U CN202076390U (en) | 2011-02-15 | 2011-02-15 | Filtering device and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200393534U CN202076390U (en) | 2011-02-15 | 2011-02-15 | Filtering device and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076390U true CN202076390U (en) | 2011-12-14 |
Family
ID=45114475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200393534U Expired - Fee Related CN202076390U (en) | 2011-02-15 | 2011-02-15 | Filtering device and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709675A (en) * | 2021-12-13 | 2022-07-05 | 陕西航空电气有限责任公司 | Electromagnetic compatibility shielding bush of power socket |
-
2011
- 2011-02-15 CN CN2011200393534U patent/CN202076390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709675A (en) * | 2021-12-13 | 2022-07-05 | 陕西航空电气有限责任公司 | Electromagnetic compatibility shielding bush of power socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20190215 |