CN203934276U - A kind of anti-leak power-supply filter - Google Patents
A kind of anti-leak power-supply filter Download PDFInfo
- Publication number
- CN203934276U CN203934276U CN201420364212.3U CN201420364212U CN203934276U CN 203934276 U CN203934276 U CN 203934276U CN 201420364212 U CN201420364212 U CN 201420364212U CN 203934276 U CN203934276 U CN 203934276U
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- China
- Prior art keywords
- power
- supply filter
- faraday cage
- fixed
- leak
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Abstract
The utility model provides a kind of anti-leak power-supply filter, its structure comprises power-supply filter, described power-supply filter is fixed on Faraday cage top, the top of this Faraday cage and bottom are parallel to each other and are all horizontal, at the top of Faraday cage, offer the power line hole that connects bottom, the power line cross-under of power-supply filter is fixed in this power line hole.This kind of anti-leak power-supply filter compared to the prior art, have reasonable in design, be skillfully constructed, the feature such as easy to use, can effectively alleviate the harm of electromagnetic leakage, Faraday cage can play to its inside " protection " effect, makes the inner impact that is not subject to external electromagnetic field; When complete machine internal electromagnetic signal arrives Faraday cage surface, the electrostatic screen of formation makes electromagnetic wave cannot arrive can inside, and then reaches the effect that suppresses electromagnetic leakage; Practical, be easy to promote.
Description
Technical field
The utility model relates to power filter technical field, specifically a kind of practical, anti-leak power-supply filter.
Background technology
Have at present in the product of EMC Design, use power-supply filter to carry out filtering to power supply signal more, but can only be by back end signal filtering at complete machine internal electric source filter; Because the inner high-frequency signal of complete machine is many, signal frequency range complicated, coupled signal very easily radiate by internal electric source line, causes the harm of electromagnetic leakage.
When machine intimate is used power-supply filter, power-supply filter adopts left and right outlet method more, power-supply filter front end cable cannot obtain effective filtering like this, as patent " CN201320506989.4 " discloses a kind of power-supply filter, although this power-supply filter has improved the reliability of equipment, but because it is arranged on metal case inside, the import and export of power line are all arranged on metal case outside, when reality is used, its front end cable is not done shielding processing, coupled signal at machine intimate easily radiate from front end of line cable, causes electromagnetic compatibility to leak.
Based on this, now provide a kind of and can effectively suppress the anti-leak power-supply filter that electromagnetic wave is gone out by power line coupled radiation.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of practical, anti-leak power-supply filter is provided.
The technical solution of the utility model realizes in the following manner, a kind of anti-leak power-supply filter, its structure comprises power-supply filter, described power-supply filter is fixed on Faraday cage top, the top of this Faraday cage and bottom are parallel to each other and are all horizontal, at the top of Faraday cage, offer the power line hole that connects bottom, the power line cross-under of power-supply filter is fixed in this power line hole.
In technique scheme, Faraday cage (Faraday Cage) is a cage being formed by metal or good conductor.Name with the surname of electromagnetic founder, English physicist michael faraday a kind of for demonstrating the equipment of equipotential, electrostatic screen and high-voltage hot-line work principle.In this patent, it is planar that Faraday cage guarantees that top is level, guarantees that power-supply filter can firmly be fixed on its top; To be level planar in bottom, guarantees that whole device can be arranged on machine intimate, and that its side can be is rectangular-shaped, also can be curved surface shape.Because the power line of power-supply filter is placed in the power line hole of Faraday cage, make the electromagnetic shielding of power line reach best, overall structure is easy to assembling simultaneously, practical.
As preferably, the overhanging extension plate that is provided with of at least two relative sides of described Faraday cage, offers fixed hole position on this extension plate.Extension plate in this technical scheme can arrange two, also can arrange four, and arranging of extension plate and fixed hole position facilitates whole device to be fixed on machine intimate.
Further, described power-supply filter is fixed on Faraday cage top by screw, corresponding, offers fixing threaded hole on Faraday cage.The fixed form of this structure is the most succinct directly perceived, is easy to the carrying out of maintenance, uses more flexible.
Further, described power-supply filter slides and is fixed on Faraday cage: on Faraday cage, offer slideway, be provided with the draw runner that can slip into slideway on the outer wall of power-supply filter.The fixed form of this structure has been removed the fixing trouble of screw from, and installing/dismounting is convenient.
The beneficial effect that the utility model compared with prior art produced is:
The feature such as that a kind of anti-leak power-supply filter of the present utility model has is simple in structure, easy to use, be skillfully constructed, by the outlet method of change power-supply filter, to go out line position and be fixed on filter bottom, and shield at the outside Faraday cage that increases of cable, can effectively alleviate the harm of electromagnetic leakage, Faraday cage can play to its inside " protection " effect, makes the inner impact that is not subject to external electromagnetic field; When complete machine internal electromagnetic signal arrives Faraday cage surface, the electrostatic screen of formation makes electromagnetic wave cannot arrive can inside, and then reaches the effect that suppresses electromagnetic leakage; Practical, be easy to promote.
Accompanying drawing explanation
Accompanying drawing 1 is Faraday cage structural representation of the present utility model.
Accompanying drawing 2 is that embodiment 1 of the present utility model is used view.
Accompanying drawing 3 is that embodiment 2 of the present utility model is used view.
Mark in accompanying drawing represents respectively:
1, Faraday cage, 2, power line hole, 3, extension plate, 4, fixed hole position, 5, fixing threaded hole, 6, power-supply filter, 7, slideway, 8, draw runner.
Embodiment
Below in conjunction with accompanying drawing, a kind of anti-leak power-supply filter of the present utility model is described in detail below.
Embodiment 1:
In order effectively to solve electromagnetic radiation, by power line, be coupled and cause the harm of electromagnetic leakage, as accompanying drawing 1, shown in Fig. 2, a kind of anti-leak power-supply filter is now provided, its structure comprises power-supply filter 6, described power-supply filter 6 is fixed on Faraday cage 1 top, the top of this Faraday cage 1 and bottom are parallel to each other and are all horizontal, at the top of Faraday cage 1, offer the power line hole 2 that connects bottom, the power line of power-supply filter 6 can pass freely through this power line hole 2, there are enough spaces Faraday cage 1 its inside, can facilitate power-supply filter 6 bottom cables at inner cabling, to newly-designed Faraday cage 1, not only can play electromagnetic shielding action, also there is filter fixation, the fixing and installation for power-supply filter 6 simultaneously.
The overhanging extension plate 3 that is provided with of 1 at least two relative side of described Faraday cage, offers fixed hole position 4 on this extension plate 3.
Described power-supply filter 6 is fixed on Faraday cage 1 top by screw, corresponding, offers fixing threaded hole 5 on Faraday cage 1.
General, in Faraday cage 1 bottom, reserved screw hole position, is easily installed in machine intimate.
Embodiment 2:
As shown in Figure 3, power-supply filter 6 is fixed on the top of Faraday cage 1, the structure of Faraday cage 1 is substantially the same manner as Example 1, difference is that power-supply filter 6 is fixed on Faraday cage 1 by slide mechanism: this slide mechanism comprises the U-shaped slideway 7 being opened on Faraday cage 1, be arranged on draw runner 8 on the outer wall of power-supply filter 6, when reality is used, the draw runner 8 of power-supply filter 6 can directly be pegged graft in slideway 7, because slideway 7 takes the shape of the letter U, can realize the fixing of three orientation, there will not be easily loosening, can anti-slip veins be set in slideway 7 inside in addition, and then realize fixing steadiness.
In assembling process, for reaching the requirement of electromagnetic compatibility, use the processing of conduction sealants to gap, such processing mode is difficult to the consistency of Guarantee Status more; This patent is by the design to power-supply filter 6 outlet methods and Faraday cage 1, can effectively reduce the use of using conduction calking in final assembly process, and can reach electromagnetic shielding action, solve the harm of electromagnetic leakage, and then the consistency of Guarantee Status.
Except the technical characterictic described in specification, be the known technology of those skilled in the art.
Claims (4)
1. an anti-leak power-supply filter, its structure comprises power-supply filter, it is characterized in that: described power-supply filter is fixed on Faraday cage top, the top of this Faraday cage and bottom are parallel to each other and are all horizontal, at the top of Faraday cage, offer the power line hole that connects bottom, the power line cross-under of power-supply filter is fixed in this power line hole.
2. a kind of anti-leak power-supply filter according to claim 1, is characterized in that: the overhanging extension plate that is provided with of at least two relative sides of described Faraday cage, offers fixed hole position on this extension plate.
3. a kind of anti-leak power-supply filter according to claim 2, is characterized in that: described power-supply filter is fixed on Faraday cage top by screw, corresponding, offers fixing threaded hole on Faraday cage.
4. a kind of anti-leak power-supply filter according to claim 2, is characterized in that: described power-supply filter slides and is fixed on Faraday cage: on Faraday cage, offer slideway, be provided with the draw runner that can slip into slideway on the outer wall of power-supply filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364212.3U CN203934276U (en) | 2014-07-03 | 2014-07-03 | A kind of anti-leak power-supply filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364212.3U CN203934276U (en) | 2014-07-03 | 2014-07-03 | A kind of anti-leak power-supply filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203934276U true CN203934276U (en) | 2014-11-05 |
Family
ID=51830017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364212.3U Expired - Fee Related CN203934276U (en) | 2014-07-03 | 2014-07-03 | A kind of anti-leak power-supply filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203934276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155888A (en) * | 2018-01-05 | 2018-06-12 | 北京航天微电科技有限公司 | A kind of LTCC heavy EMI filters for powered electromagnetic to be inhibited to interfere |
-
2014
- 2014-07-03 CN CN201420364212.3U patent/CN203934276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155888A (en) * | 2018-01-05 | 2018-06-12 | 北京航天微电科技有限公司 | A kind of LTCC heavy EMI filters for powered electromagnetic to be inhibited to interfere |
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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 |
Granted publication date: 20141105 Termination date: 20160703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |