CN204290902U - Integral filter - Google Patents
Integral filter Download PDFInfo
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- CN204290902U CN204290902U CN201420703702.1U CN201420703702U CN204290902U CN 204290902 U CN204290902 U CN 204290902U CN 201420703702 U CN201420703702 U CN 201420703702U CN 204290902 U CN204290902 U CN 204290902U
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Abstract
The utility model is a kind of integral filter, comprise cavity and filter element assembly, ground plate is provided with in described cavity, described cavity is divided into left chamber and right chamber by this ground plate, in described left chamber, circuit board is set, the left side wall of this left chamber arranges the first insulated terminal, and the lead-in wire of input and output is welded on described circuit board by this insulated terminal, in described right chamber, be provided with described filter element assembly; Described filter element assembly comprises common mode inductance assembly, feedthrough capacitor group and conventional capacitive group, wherein common mode inductance assembly is arranged on the central authorities of described right chamber, described conventional capacitive group is distributed in around this common mode inductance assembly, described feedthrough capacitor group is inlayed and is arranged in described ground plate, and the pin of this feedthrough capacitor group is welded on described circuit board.The utility model structure is simple, easy to assembly, and production technology is simple, realizes integration of the present utility model and integrated.
Description
Technical field
The utility model relates to technical field of filtering, is specifically related to a kind of integral filter.
Background technology
Filter is as the equipment by the noise signal filtering in circuit, be widely used in electronic equipment of various, especially in the fields such as communication equipment, Aero-Space, on-board equipment, electromagnetic environment bandwidth, field intensity is large, higher to the requirement of filter circuit, will directly affect safety box and the reliability of relevant device operation.Now to electronic product to miniaturization, integrated requirement is more and more higher, thus requires that the volume of its median filter needs significantly to reduce, and filter effect is better, and accommodation is wider.
Utility model content
The utility model is for the deficiencies in the prior art, and propose a kind of volume little, integration degree is high, and shield effectiveness is good, the integral filter of stable performance.Concrete technical scheme is as follows:
A kind of integral filter, comprise cavity (1) and filter element assembly (2), it is characterized in that: in described cavity (1), be provided with ground plate (3), described cavity (1) is divided into left chamber (11) and right chamber (12) by this ground plate (3), circuit board (8) is set in described left chamber (11), the left side wall of this left chamber (11) arranges the first insulated terminal (7), the lead-in wire of input and output is welded on described circuit board (8) by this insulated terminal (7), in described right chamber (12), described filter element assembly (2) is installed,
Described filter element assembly (2) comprises common mode inductance assembly (4), feedthrough capacitor group (5) and conventional capacitive group (6), wherein common mode inductance assembly (4) is arranged on the central authorities of described right chamber (12), described conventional capacitive group (6) is distributed in this common mode inductance assembly (4) around, described feedthrough capacitor group (5) is inlayed and is arranged in described ground plate (3), first pin of this feedthrough capacitor group (5) is welded on described circuit board (8), the circuit that second pin forms with described common mode inductance assembly (4) and conventional capacitive group (6) is connected.
The utility model adopts metallic cavity as shell, while playing function of shielding, fixing volume size can be generated according to demand, meet the demand of different product, according to the size feature of electronic component, common mode inductance is arranged on the middle position of right chamber, less capacity cell is arranged on around common mode inductance, or bottom, make its whole product with compact structure, realize small size, highly integrated, simultaneously direct by capacity cell near right chamber inner wall, make its ground connection more fully and convenient, the length of ground lead can be reduced, make its structure simple; Cavity is divided into two independently cavitys by ground plate, electromagnetic signal does not interfere with each other mutually, strong anti-interference ability can be added, ensure filter effect, inlay in ground plate simultaneously and feedthrough capacitor is set, make feedthrough capacitor ground connection more abundant, and without the need to lead-in wire, structure is simple, can play the advantage of feedthrough capacitor to greatest extent simultaneously.
For better realizing the utility model, may further be:
The right side wall of described right chamber (12) is provided with the second insulated terminal (9), and the switch connecting line in described filter element assembly (2) passes through this second insulated terminal (9).This second insulated terminal (9) plays solar heat protection damp proof insulation, lead-in wire can be fixed on the wall of chamber, prevents lead-in wire and chamber wall friction from damaging.
The magnet ring of described common mode inductance assembly (4) adopts iron based nano crystal material to make.Make it better to the inhibition of common mode disturbances.
Described ground plate (3) adopts tin welding on the inwall of described cavity (1), earthing effect is better, technique is more simple simultaneously, by feedthrough capacitor assembly after containment portion machines, then can be loaded in cavity by the assembly of ground plate and feedthrough capacitor.
Described cavity (1) adopts aluminium one-body molded, and processing is simple, and shield effectiveness is better, and mechanical strength is also stronger simultaneously.
Adopt in the described cavity (1) epoxy resin to encapsulate, while being fixed, make its whole Realization of Product integral structure to each components and parts of inside cavity, antidetonation, heat conduction, moisture effect are better.
The beneficial effects of the utility model are: structure is simple, easy to assembly, and production technology is simple, and the use of ground plate can well by feedthrough capacitor group ground connection; Each element in cavity carries out assembled arrangement according to the feature of shape and volume size, realizes volume minimization, finally adopts the mode of encapsulating or epoxy resin to be fixed and to seal, and realizes integration of the present utility model and integrated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1: a kind of integral filter, comprise square cavity 1 and filter element assembly 2, cavity 1 adopts aluminium integrally to process, shield effectiveness is better, mechanical strength is higher, ground plate 3 is welded with in described cavity 1, described cavity 1 is divided into left chamber 11 and right chamber 12 by this ground plate 3, in described left chamber 11, circuit board 8 is set, the left side wall of this left chamber 11 arranges the first insulated terminal 7, the lead-in wire of input and output is welded on described circuit board 8 after this insulated terminal 7, in described right chamber 12, described filter element assembly 2 is installed,
Described filter element assembly 2 comprises two common mode inductance assemblies 4, feedthrough capacitor group 5 and conventional capacitive group 6, wherein common mode inductance assembly 4 is that two iron based nano crystal materials form as iron core common mode inductance, feedthrough capacitor group 5 is made up of feedthrough capacitor CY1-1, feedthrough capacitor CY1-2, feedthrough capacitor CY4 and feedthrough capacitor CY5, and conventional capacitive group 6 is made up of electric capacity CX1, electric capacity CX2, electric capacity CY2-1, electric capacity CY2-2, electric capacity CX3, electric capacity CY3-1 and electric capacity CY3-2;
Wherein common mode inductance assembly 4 is arranged on the central authorities of described right chamber 12, described conventional capacitive group 6 is distributed in surrounding and the bottom of this common mode inductance assembly 4, described feedthrough capacitor group 5 is inlayed and is arranged in described ground plate 3, the earth terminal of each feedthrough capacitor wherein in this punching feedthrough capacitor group 5 is all connected with ground plate 1, for ensureing the compactness connected, conductive adhesive can be adopted between each feedthrough capacitor and ground plate 3, first pin set of feedthrough capacitor group 5 is welded on circuit board 8, be connected with the connecting line of corresponding input and output respectively by this circuit board 8, the circuit that second pin set and the filter element assembly 2 of described feedthrough capacitor group 5 form is connected,
The right side wall of described right chamber 12 is provided with the second insulated terminal 9, and the switch connecting line in described filter element assembly 2 passes through this second insulated terminal 9;
In cavity 1 after each element installation, injection ring epoxy resins tight seal, then covers cover plate above cavity, adopts screw locking, forms the filter of integration.
As shown in Figure 2: filter function be completed, the connected mode of each electric component in cavity 1 is as follows, first common mode inductance of inductance L 1-1 and inductance L 1-2 composition, second common mode inductance of inductance L 2-1 and inductance L 2-2 composition, access ae loop after described inductance L 1-1 and inductance L 2-1 serial connection, access bf loop after described inductance L 1-2 and inductance L 2-2 series connection, the input of described inductance L 1-1 and inductance L 1-2 is serially connected with feedthrough capacitor CY1-1 and feedthrough capacitor CY1-2 respectively, between the input of this inductance L 1-1 and inductance L 1-2, also cross-over connection has electric capacity CX1, electric capacity CX2 is connected at the output span of this inductance L 1-1 and inductance L 1-2, the two ends of this electric capacity CX2 are respectively through electric capacity CY2-1 and electric capacity CY2-2 ground connection, the output span of described inductance L 2-1 and inductance L 2-2 is connected to electric capacity CX3, the two ends of this electric capacity CX3 are respectively through electric capacity CY3-1 and electric capacity CY3-2 ground connection, the output of described inductance L 2-2 is also connected in series feedthrough capacitor CY5, switch cd and feedthrough capacitor CY4, forms fg loop.Realize the effective filtering of the clutter between frequency 1K-10M.
Claims (6)
1. an integral filter, comprise cavity (1) and filter element assembly (2), it is characterized in that: in described cavity (1), be provided with ground plate (3), described cavity (1) is divided into left chamber (11) and right chamber (12) by this ground plate (3), circuit board (8) is set in described left chamber (11), the left side wall of this left chamber (11) arranges the first insulated terminal (7), the lead-in wire of input and output is welded on described circuit board (8) through this insulated terminal (7), in described right chamber (12), described filter element assembly (2) is installed,
Described filter element assembly (2) comprises common mode inductance assembly (4), feedthrough capacitor group (5) and conventional capacitive group (6), wherein common mode inductance assembly (4) is arranged on the central authorities of described right chamber (12), described conventional capacitive group (6) is distributed in this common mode inductance assembly (4) around, described feedthrough capacitor group (5) is inlayed and is arranged in described ground plate (3), first pin of this feedthrough capacitor group (5) is welded on described circuit board (8), the circuit that second pin forms with described common mode inductance assembly (4) and conventional capacitive group (6) is connected.
2. integral filter according to claim 1, it is characterized in that: on the right side wall of described right chamber (12), be provided with the second insulated terminal (9), the switch connecting line in described filter element assembly (2) passes through this second insulated terminal (9).
3. integral filter according to claim 1, is characterized in that: the magnet ring of described common mode inductance assembly (4) adopts iron based nano crystal material to make.
4. integral filter according to claim 1, is characterized in that: described ground plate (3) is welded on the inwall of described cavity (1).
5. integral filter according to claim 1, is characterized in that: described cavity (1) adopts aluminium one-body molded.
6. integral filter according to claim 1, is characterized in that: described cavity (1) inside adopts epoxy resin to encapsulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703702.1U CN204290902U (en) | 2014-11-20 | 2014-11-20 | Integral filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703702.1U CN204290902U (en) | 2014-11-20 | 2014-11-20 | Integral filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290902U true CN204290902U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420703702.1U Active CN204290902U (en) | 2014-11-20 | 2014-11-20 | Integral filter |
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| CN (1) | CN204290902U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141274A (en) * | 2015-09-24 | 2015-12-09 | 重庆大及电子科技有限公司 | Filtering assembly and application thereof |
| CN106209000A (en) * | 2016-08-22 | 2016-12-07 | 重庆大及电子科技有限公司 | A kind of filtering unit |
| CN107528560A (en) * | 2017-09-29 | 2017-12-29 | 重庆大及电子科技有限公司 | A kind of laser orientation system filtering unit |
| CN107708398A (en) * | 2017-10-12 | 2018-02-16 | 四川中光防雷科技股份有限公司 | A kind of high reliability EMI filtration modules |
| CN111953205A (en) * | 2020-07-23 | 2020-11-17 | 重庆大及电子科技有限公司 | High-power filtering protection device and frame type filtering structure |
-
2014
- 2014-11-20 CN CN201420703702.1U patent/CN204290902U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141274A (en) * | 2015-09-24 | 2015-12-09 | 重庆大及电子科技有限公司 | Filtering assembly and application thereof |
| CN106209000A (en) * | 2016-08-22 | 2016-12-07 | 重庆大及电子科技有限公司 | A kind of filtering unit |
| CN106209000B (en) * | 2016-08-22 | 2019-04-09 | 重庆大及电子科技有限公司 | A kind of filtering unit |
| CN107528560A (en) * | 2017-09-29 | 2017-12-29 | 重庆大及电子科技有限公司 | A kind of laser orientation system filtering unit |
| CN107528560B (en) * | 2017-09-29 | 2023-12-22 | 重庆大及电子科技有限公司 | Filtering component of laser positioning system |
| CN107708398A (en) * | 2017-10-12 | 2018-02-16 | 四川中光防雷科技股份有限公司 | A kind of high reliability EMI filtration modules |
| CN111953205A (en) * | 2020-07-23 | 2020-11-17 | 重庆大及电子科技有限公司 | High-power filtering protection device and frame type filtering structure |
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