CN1617663A - Electronic wave shielding structure of noise filter unit by using shielding plate - Google Patents
Electronic wave shielding structure of noise filter unit by using shielding plate Download PDFInfo
- Publication number
- CN1617663A CN1617663A CNA2003101050993A CN200310105099A CN1617663A CN 1617663 A CN1617663 A CN 1617663A CN A2003101050993 A CNA2003101050993 A CN A2003101050993A CN 200310105099 A CN200310105099 A CN 200310105099A CN 1617663 A CN1617663 A CN 1617663A
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- CN
- China
- Prior art keywords
- noise filter
- barricade
- drain pan
- noise
- ground connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
This invention relates to a noise filter providing power source to projecting camera including a noise filter characterizing that the noise filter is set with a socket part designed for cut-in power supply, set with a shield board combining with the noise filter and blocking leakage of electronic waves and a base shell connected to the earth with a shield board, mounted with a copper screen. The invention is cut in the power supply by supply socket, so all electrical appliances can use it to guarantee the reliability of the products.
Description
Technical field
The present invention relates to supply the noise filter of projector's power supply.In more detail, it relates to and utilizes barricade to shield by a kind of noise filtering portion electron waves shielding construction that electron waves take place in the noise filtering portion.
Background technology
Usually, so-called electron waves are by electronics or electric former thereby produce.These electron waves not only bring adverse influence to the operation of equipment, also can cause adverse influence to human body.In our employed nearly all electronic product, all will produce such electron waves, therefore developing a kind of scheme that can remove to cut off this electron waves effectively will be an important key of development.
Recently, the environmental pollution of this electron waves day by day becomes more deep social concern, thereby can release the countermeasure of a solution to this hope.
Fig. 1 is the stereogram of the mounting structure of traditional noise filter in projector inside.As shown in the drawing, be provided with the drain pan 1 that is used for installing light engine and part on top, and on a side of drain pan, be installed with and be used for providing the noise filter 2 of power supply to machine intimate.Be equipped with on the inwall of drain pan 1 of noise filter 2, be provided with and be used for the copper screen 1a of screening electron ripple.Also have,, fixed support is fixed to the top of noise filter 2 by fixture 4 for the inboard that noise filter 2 is received drain pan 1.In the lower end of fixed support 3, be provided with the fixing hole 3a of break-through, form in the bottom of drain pan 1 one with the fixing hole 3a post 5 that is relatively fixed.In addition, fixing hole 3a and fixed leg 5 will be fixed by fixture 4.
Below with reference to Fig. 2, the formation of noise filter 2 is described in more detail.Fig. 2 is the stereogram of traditional noise filter.Noise filter 2 is by inserting the socket insertion section 2a in the supply socket and forming around the housing 2b of socket insertion section 2a.Socket insertion section 2a is in order to insulate, and major part is all made with synthetic resin.Housing 2b makes with iron plate.
But when traditional noise filter 2 was fixed to drain pan, the socket insertion section 2a that contacts with drain pan was made by synthetic resin, owing to there is not shielding action, will have the problem of leaks electrons ripple.In the joint portion of noise filter 2 with drain pan 1, it is maximum to produce electron waves.Can shield this electron waves effectively, be very important be again the comparison difficulty.
Summary of the invention
The objective of the invention is in order to solve the above problems, a kind of noise filtering portion electron waves shielding construction that utilizes barricade is provided, this structure is inserted a barricade in noise filter, be located at the inboard copper screen four sides ground connection that forms of drain pan so that make, thus the electron waves that can cut off in noise filter effectively to be produced.
The objective of the invention is to be achieved through the following technical solutions: it comprises noise filter, and feature is: noise filter is provided with to inserting the socket insertion section that power supply is provided with; Be provided with one and combine with noise filter, and play the barricade that cuts off the electron waves leakage effects; Be provided with one and barricade ground connection, and be assembled with the drain pan of copper screen.
Effect of the present invention: insert power supply by supply socket, promptly use in all household appliances of noise filter, all can use, and utilize noise filter will cut off the leakage of electron waves effectively, thereby guarantee reliability of products.
Description of drawings
Fig. 1 is the stereogram of the mounting structure of traditional noise filter in projector inside.
Fig. 2 is the stereogram of traditional noise filter.
Fig. 3 is the stereogram of the mounting structure of noise filter of the present invention in projector inside.
Fig. 4 is combine with the noise filter exploded perspective view of state of barricade of the present invention.
Fig. 5 a, b, c are front view, vertical view and the right views of barricade of the present invention.
The symbol description of accompanying drawing major part:
Drain pan 1, copper screen 1a, noise filter 2, socket insertion section 2a, housing 2a, fixed support 3, fixing hole 3a, fixture 4, fixed leg 5, barricade 16, the 16a of frame ground portion, filter grounding parts 16b.
Embodiment
Below, the example that present invention will be described in detail with reference to the accompanying.
As shown in Figure 3, structure of the present invention is provided with the drain pan 11 of assembling light engine or part, in a side of drain pan 11, the noise filter 12 that power supply is provided to machine intimate is housed then.On drain pan 11 inwalls that combine with noise filter 12, the copper screen 11a that cuts off electron waves is set.In addition, an end of barricade 16 is coupled on the noise filter 12; The other end of barricade 16 then is grounding on the copper screen 11a.For noise filter 12 being fastened on drain pan 11 inboards, utilize fixture 14 fixed support 13 to be fixed to the top of noise filter 12.In the lower end of fixed support 13, be provided with the fixing hole 13a of break-through fixture 14, then be provided with corresponding fixed leg 15 with fixing hole 13a in the bottom of drain pan 11.The fixed support 13 that utilizes fixture 14 will be provided with fixing hole 13a is fixed on the fixed leg 15.
Below with reference to Fig. 4, the formation of noise filter 12 with barricade 16 is elaborated: in projector, from inserting the noise filter 12 back fixed mask plates 16 that supply socket (figure does not show) provides power supply.Be used for inserting the socket insertion section 12a of supply socket, be located at the front of noise filter 12, it is made by the synthetic resin that prevents to leak electricity or get an electric shock, and housing 12b is then made by iron plate.Before noise filter 12 is assembled to drain pan 11, utilize ground shield 16 to make noise filter 12 and the copper screen 11a ground connection that forms the screening electron ripple at drain pan 11 inwalls earlier.Barricade is made a structure that the housing 12b four sides of noise filter 12 all can be shielded.More detailed structure is to be made of following components, promptly is provided with the housing 12b of assembling noise filter 12; Be provided with and be used for the filtering grounding parts 16b of ground connection; Be provided with the 16a of frame ground portion that carries out ground connection with the copper screen 11a of filtering grounding parts 16b opposite drain pan 11.
Below, noise filter 12 with said structure assembling process with barricade 16 is described.The 16a of frame ground portion that makes barricade 16 is towards the front, and inserts from the back of noise filter 12, and at this moment, filtering grounding parts 16b will be grounding on the housing 12b of noise filter 12.Barricade 16 is extremely important with the ground state of noise filter 12; For this reason as shown in Figure 5, make the size of fitted position first, second make size,, thereby improve ground state so that it is very tight that barricade 16 and noise filter 12 are held less than noise filtering 12 housing 12b.In addition, be installed on the drain pan 11 by above-mentioned mated condition.At this moment, the 16a of frame ground portion of barricade 16, ground connection is on the drain pan 11 inboard copper screen 11a that form.Simultaneously, noise filter 12 is fastened on the drain pan 11, is provided with in the lower end of fixed support 13 and is used for the fixing hole 13a of break-through fixture by fixed support 13; And in the bottom of drain pan 11, then be provided with and the corresponding fixed leg 15 of fixing hole.Then, utilize fixture 14, fixing hole 13a and fixed leg 15 are fixed.
The shielding that the present invention not only is applicable to the noise filter 12 of projector and prevents to be leaked from the electron waves that noise filter 12 produces is equally applicable to use in all household appliances of noise filter 12, and can shields the electron waves of leakage effectively.
Claims (2)
1, a kind of noise filtering portion electronic shield structure of utilizing barricade comprises noise filter, it is characterized in that: noise filter is provided with to inserting the socket insertion section that power supply is provided with; Be provided with one and combine with noise filter, and play the barricade that cuts off the electron waves leakage effects; Be provided with one and barricade ground connection, and the drain pan of assembling copper screen.
2, the noise filtering portion electronic shield structure of utilizing barricade according to claim 1 is characterized in that: the housing that is provided with noise filter; Be provided with and be used for the filtering grounding parts of ground connection; Be provided with the frame ground portion that carries out ground connection with the copper screen of filtering grounding parts opposite drain pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101050993A CN1617663A (en) | 2003-11-14 | 2003-11-14 | Electronic wave shielding structure of noise filter unit by using shielding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101050993A CN1617663A (en) | 2003-11-14 | 2003-11-14 | Electronic wave shielding structure of noise filter unit by using shielding plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1617663A true CN1617663A (en) | 2005-05-18 |
Family
ID=34757183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101050993A Pending CN1617663A (en) | 2003-11-14 | 2003-11-14 | Electronic wave shielding structure of noise filter unit by using shielding plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1617663A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104541442A (en) * | 2012-08-03 | 2015-04-22 | 日立汽车系统株式会社 | DC-DC converter |
| CN106455466A (en) * | 2016-12-27 | 2017-02-22 | 成都芯通科技股份有限公司 | Grounding protection device and method of a circuit board |
-
2003
- 2003-11-14 CN CNA2003101050993A patent/CN1617663A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104541442A (en) * | 2012-08-03 | 2015-04-22 | 日立汽车系统株式会社 | DC-DC converter |
| CN104541442B (en) * | 2012-08-03 | 2017-03-15 | 日立汽车系统株式会社 | DC-DC converter |
| CN106455466A (en) * | 2016-12-27 | 2017-02-22 | 成都芯通科技股份有限公司 | Grounding protection device and method of a circuit board |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |