CN203135703U - DC filter - Google Patents
DC filter Download PDFInfo
- Publication number
- CN203135703U CN203135703U CN 201320013870 CN201320013870U CN203135703U CN 203135703 U CN203135703 U CN 203135703U CN 201320013870 CN201320013870 CN 201320013870 CN 201320013870 U CN201320013870 U CN 201320013870U CN 203135703 U CN203135703 U CN 203135703U
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- Prior art keywords
- filter
- electric connector
- filter body
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a DC filter comprising a filter body formed by using a metal housing to wrap a filter device; the filter is characterized by also comprising an electric connector arranged on the filter body; the metal housing of the filter body is provided with grooves positioned around a mounting position of the electric connector; and shielding seal strips are embedded in the grooves. The beneficial effect is that electromagnetic shielding seal effect of the DC filter is better.
Description
Technical field
The utility model relates to a kind of electric device, particularly a kind of filter.
Background technology
Filter (filter) is a kind of device that is used for eliminating electronic jamming, obtains pure direct current with inputing or outputing through filtration.To the circuit that frequency or the frequency beyond this frequency of characteristic frequency are carried out effective filtering, be exactly filter, its function obtains a characteristic frequency exactly or eliminates a characteristic frequency.
Filter generally has two ports, an input signal, an output signal.
Filter is the networking that is made of inductor and capacitor, can make the ac and dc current of mixing separately.In the power rectifier, namely filter ripple in the clean pulsating direct current by this networking, and obtain purer direct current output.The most basic filter is to be made of a capacitor and an inductor, is called the filtering of L type.The filter that all are various all is that set L type single-section filter forms.Basic single-unit formula filter is made up of a series arm and a parallel arm, and series arm is inductor, and parallel arm is capacitor.
Also there are some flaws in the filter product of prior art in the actual use:
1. the shield gasket performance is not high, and part frequency electromagnetic compatibility conduction test has the phenomenon that exceeds standard;
2. because the most material of filter is metallic conductor, its density is higher, causes final products heavier, and is more stable usually in the use of some permanent plants; But move at some, especially in the equipment of high-speed mobile, cause easily to come off, cause operational failure.
3. job insecurity on powerful device, the electric current that can bear is less.
4. filter effect is bad when frequency ratio is higher, promotes difficulty.
Therefore, need to improve existing filter.
Summary of the invention
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of and inlay the filter of shield gasket bar at base, solve the bad problem of above-mentioned shield gasket effect.
The technical solution adopted in the utility model is such:
A kind of DC filter, comprise the filter body, the filter body is made of metal shell parcel filtering device, it is characterized in that: also comprise electric connector, electric connector is installed on the filter body, the metal shell of the filter body at peripheral place is provided with groove in the electric connector installation site, and inlays the shield gasket bar in groove.
Further: set groove quantity is preferably two.
Further, described electric connector is made up of Connection Block and connector, and Connection Block is fixedlyed connected with the metal shell of filter body; Connector is installed in the Connection Block.
Further, the said fixing connection is preferably the bolt connection.So that dismounting is beneficial to maintenance.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, adopt after the shield gasket bar, after testing, the shield effectiveness of filter significantly improves.
Description of drawings
Fig. 1 is the utility model left view.
Fig. 2 is the utility model front view
Mark among the figure: 1 is the filter body, and 2 is electric connector, and 1-1 is the shield gasket bar, and 2-1 is Connection Block, and 2-2 is connector.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Embodiment 1:
As shown in Figure 1, a kind of DC filter, comprise filter body 1, filter body 1 is made of metal shell parcel filtering device, also comprise electric connector 2, electric connector 2 is installed on the filter body 1, and the metal shell of the filter body 1 at peripheral place is provided with groove in electric connector 2 installation sites, and inlays the shield gasket bar in groove.
The beneficial effect of present embodiment is: improved the shield gasket effect, reduced electromagnetic leakage.
Embodiment 2:
On the basis of embodiment 1, the groove quantity of electric connector 2 peripheries is increased to two, and inlay the shield gasket bar.
The beneficial effect of present embodiment is: further improve the shield gasket performance.
Embodiment 3:
As shown in Figure 2, on the basis of embodiment 2, described electric connector 2 is made up of Connection Block 2-1 and connector 2-2, and Connection Block 2-1 is fixedlyed connected by the mode of welding with the aluminium shell of filter body 1, and connector 2-2 is installed in the Connection Block 2-1.
The beneficial effect of present embodiment is: make things convenient for the filter place in circuit.
Embodiment 4:
On the basis of embodiment 3, change the welding connecting mode between the aluminium shell of Connection Block 2-1 and filter body 1 into bolt and be connected.
The beneficial effect of present embodiment is: make things convenient for the dismounting of electric connector, be beneficial to follow-up maintenance, maintenance.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (4)
1. DC filter, comprise filter body (1), filter body (1) is made of metal shell parcel filtering device, it is characterized in that: also comprise electric connector (2), electric connector (2) is installed on the filter body (1), the metal shell of the filter body (1) at peripheral place is provided with groove in electric connector (2) installation site, and inlays the shield gasket bar in groove.
2. DC filter according to claim 1, it is characterized in that: institute's recessing quantity is two.
3. DC filter according to claim 1, it is characterized in that: described electric connector (2) is made up of Connection Block (2-1) and connector (2-2), and Connection Block (2-1) is fixedlyed connected with the metal shell of filter body (1); Connector (2-2) is installed in the Connection Block (2-1).
4. DC filter according to claim 3 is characterized in that: the described bolt that is fixedly connected as connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013870 CN203135703U (en) | 2013-01-11 | 2013-01-11 | DC filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013870 CN203135703U (en) | 2013-01-11 | 2013-01-11 | DC filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135703U true CN203135703U (en) | 2013-08-14 |
Family
ID=48943642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013870 Expired - Fee Related CN203135703U (en) | 2013-01-11 | 2013-01-11 | DC filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203135703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997034A (en) * | 2014-06-11 | 2014-08-20 | 常州市宏硕电子有限公司 | Twin-core direct-current filter |
-
2013
- 2013-01-11 CN CN 201320013870 patent/CN203135703U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997034A (en) * | 2014-06-11 | 2014-08-20 | 常州市宏硕电子有限公司 | Twin-core direct-current filter |
| CN103997034B (en) * | 2014-06-11 | 2017-01-11 | 常州市宏硕电子有限公司 | Twin-core direct-current filter |
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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: 20130814 Termination date: 20180111 |