CN218483068U - Electromagnetic compatibility filter - Google Patents
Electromagnetic compatibility filter Download PDFInfo
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- CN218483068U CN218483068U CN202222125913.9U CN202222125913U CN218483068U CN 218483068 U CN218483068 U CN 218483068U CN 202222125913 U CN202222125913 U CN 202222125913U CN 218483068 U CN218483068 U CN 218483068U
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Abstract
The utility model discloses an electromagnetic compatibility filter, which comprises an upper cover, a base and a circuit board positioned between the upper cover and the base; an input terminal row interface and an output terminal row interface are respectively arranged on two sides of the circuit board, a protection module is arranged on the circuit board close to the input terminal row interface, and a filtering module is arranged on the circuit board close to the output terminal row interface; the corner of the base is provided with a mounting hole for directly mounting and fixing the filter, and the bottom surface of the base is provided with a first mounting component for matching with a metal bottom plate or a guide rail mounting plate; the utility model discloses electromagnetic compatibility wave filter not only can effectual realization to the protection of pulse, can also realize the effective filtering to the noise, and the structural installation is simple swift, can adopt wiring installation or guide rail installation to use, the effectual electromagnetic environment who has solved industrial field, the harsh application problem of natural environment.
Description
Technical Field
The utility model relates to a wave filter field, concretely relates to electromagnetic compatibility wave filter.
Background
With the rapid development of electronic technology, the switching power supply gradually replaces the conventional rectifier power supply due to its advantages of small size, high efficiency, high reliability, etc., and is widely used in various social fields, but due to its high operating frequency, the switching power supply generates fast current and voltage changes therein, i.e., di/dt and dv/dt cause harmonic and spike interference, and affects the normal operation of its own circuit and other electronic systems through coupling ways such as conduction, radiation and crosstalk, etc., and in order to ensure the stable operation of the circuit and electronic systems, an electromagnetic compatibility filter is often used. The chinese patent application No. CN201320131647.9 provides a positive and negative surge protection circuit, which can effectively suppress externally input transient pulses, including short-time (e.g., uS-level) high-voltage surge and slightly long-time (e.g., mS-level) overvoltage surge, covering most of the requirements of surge standards, but in practical application, the circuit still needs to add an additional filter for the interference generated by dv/dt and di/dt inside the switching power supply;
in order to meet the standards of various industries, a protection module and a filtering module are required to be arranged in the filter, but the size and the cost of the filter can be greatly increased; meanwhile, since the chinese patent CN201320131647.9 belongs to a board-mounted manner of a circuit board, it is not applicable to a manner that requires wiring installation and a manner that requires rail installation in practical use.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an electromagnetic compatibility wave filter, wave filter internally mounted have the protective film piece and the filtering module that the in-service use needs, and the wave filter both can the direct mount use simultaneously, also can adopt wiring installation or guide rail installation to use, makes things convenient for the application of technical staff in the reality, improves the installation effectiveness, adapts to complicated installation environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electromagnetic compatibility filter comprises an upper cover, a base and a circuit board positioned between the upper cover and the base;
an input terminal row interface and an output terminal row interface are respectively arranged on two sides of the circuit board, a protection module is arranged on the circuit board close to the input terminal row interface, and a filtering module is arranged on the circuit board close to the output terminal row interface;
the filter mounting structure comprises a base, a filter, a metal bottom plate or a guide rail mounting plate, a first mounting component and a second mounting component, wherein the corner of the base is provided with a mounting hole for directly mounting and fixing the filter, and the bottom surface of the base is provided with the first mounting component for matching with the metal bottom plate or the guide rail mounting plate;
the base and the upper cover are provided with second mounting assemblies which are matched for use, and a sealed shell is formed by the upper cover, the base and terminal strip interfaces positioned on two sides of the circuit board.
Preferably, the first mounting assembly includes a positioning hole and a locking groove provided at a bottom surface of the base.
Preferably, the first mounting assembly comprises a positioning column and a buckle which are arranged on the metal base plate, the positioning column arranged on the metal base plate is combined with a positioning hole at the bottom surface of the base, and the buckle arranged on the metal base plate is combined with a clamping groove at the bottom surface of the base.
Preferably, the first mounting assembly comprises a buckle arranged on the guide rail mounting plate, and the buckle arranged on the guide rail mounting plate is combined with a clamping groove at the bottom surface of the base.
Preferably, the second mounting assembly comprises a clamping groove formed in the side face of the base and a buckle formed in the side face of the upper cover.
Preferably, the input terminal row interface and the output terminal row interface on two sides of the circuit board are asymmetrically arranged.
Preferably, the base is a cavity housing with an open top.
Preferably, the circuit board is located in the cavity of the base, and the circuit board and the base are installed and fixed through a clamping groove formed in the circuit board and a buckle formed in the base.
Preferably, the base is a half-potted structure.
The electromagnetic compatible filter integrates two functional modules of protection and filtering, and can effectively inhibit the interference of various intensities of environments in practical application; and simultaneously the utility model discloses the installation of working a telephone switchboard can be realized to electromagnetic compatibility filter cooperation metal bottom plate, and the guide rail installation can be realized to cooperation guide rail mounting panel, promptly the utility model discloses not only can the direct mount use, also can adopt wiring installation and guide rail installation dual mode, can effectively adapt to the installation demand, quick convenient satisfying field application has increased the maneuverability of in-service use outside having saved the filter characteristic.
Drawings
Fig. 1 is a structural diagram of the electromagnetic compatibility filter of the present invention;
fig. 2 is an exploded view of the electromagnetic compatibility filter of the present invention;
fig. 3 is an internal block diagram of the electromagnetic compatibility filter of the present invention;
fig. 4 is a top view of the electromagnetic compatibility filter of the present invention;
fig. 5 is a bottom view of the electromagnetic compatibility filter of the present invention;
fig. 6 is a structural diagram of an electromagnetic compatibility filter (wiring installation) of the present invention;
fig. 7 is a structural diagram of the electromagnetic compatibility filter (rail mounting) of the present invention;
fig. 8 is a structural diagram of a metal base plate of the electromagnetic compatibility filter of the present invention;
fig. 9 is a structural diagram of the guide rail mounting plate of the electromagnetic compatibility filter of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention and its advantages will be described in further detail with reference to the following detailed description and the accompanying drawings, however, the present invention is not limited to the detailed description.
As shown in fig. 1 to 4, for the electromagnetic compatibility filter provided by the present invention, the filter includes an upper cover 11, a base 12, and a circuit board 82 located between the upper cover 11 and the base 12; the two sides of the circuit board 82 are respectively provided with asymmetrically arranged terminal strip interfaces 14, a terminal cover 13 is arranged above the terminal strip interfaces 14 to play a role in insulation protection, the asymmetrically arranged terminal strip interfaces 14 comprise input terminal strip interfaces and output terminal strip interfaces, a protection module is arranged on the circuit board close to the input terminal strip interfaces, and a filtering module is arranged on the circuit board close to the output terminal strip interfaces; the filter formed in this way can realize the protection function of high surge pulse and the filtering function of high-frequency electromagnetic interference, and the internal layout sequence is according to the design rule of protection before filtering.
The base 14 is a cavity shell with an opening at the top, and is of a half-encapsulation structure, so that the pouring sealant can be prevented from flowing outwards, the circuit board 82 is positioned in the cavity of the base 14, and is buckled and connected with a buckle 831 arranged on the base through a clamping groove (a U-shaped groove arranged on the edge of the circuit board, which is not marked in the drawing) arranged on the circuit board, so that the circuit board and the base can be installed and fixed without screws, and the asymmetrically arranged terminal row interfaces 14 on the two sides of the circuit board 82 respectively extend out from the left side surface and the right side surface of the base 14; the front and rear sides of the base 14 are provided with slots 832, the front and rear sides of the upper cover 11 are provided with corresponding fasteners 811, and the slots arranged on the sides of the base and the fasteners arranged on the sides of the upper cover are fastened together, so that the upper cover 11, the base 14 and the terminal row connectors 14 located on both sides of the circuit board can form a sealed housing.
When the wiring installation mode is adopted, as shown in fig. 6, the structure diagram of the electromagnetic compatibility filter (wiring installation) is shown, that is, the using state diagram of fig. 6 is formed by fig. 1 and fig. 8, fig. 8 is the structure diagram of the metal bottom plate 35, and the metal bottom plate 35 is provided with positioning columns 66/65 with foolproof function, asymmetric buckles 61/62 and asymmetric installation holes 63/64; the positioning columns 65/66 are superposed with the positioning holes 101/102 on the bottom surface of the base 14, the buckles 61/62 are buckled and connected with the clamping grooves 103/104 on the bottom surface of the base 14, the mounting holes 63/64 are superposed with the mounting holes 121/122 at the corners of the base 14, and are mounted and fixed by screws to ensure that mounting is foolproof, firm and reliable, meanwhile, the metal bottom plate 35 can be directly grounded, and electromagnetic interference can be directly subjected to interference relief through the low resistance path resistance of the metal bottom plate.
When the guide rail mounting mode is used, as shown in fig. 7, a structure diagram of an electromagnetic compatibility filter (guide rail mounting) is shown, that is, a use state diagram of fig. 7 is formed by fig. 1 and fig. 9, fig. 9 is a structure diagram of a guide rail mounting plate 45, an asymmetric buckle 73/74 and an asymmetric mounting hole 71/72 are arranged on the guide rail mounting plate 45, the buckle 73/74 is buckled and connected with a clamping groove 103/104 on the bottom surface of a base 14, the mounting hole 71/72 is overlapped with a mounting hole 121/122 at the corner of the base 14, the mounting with a TS35 guide rail can be realized, the mounting is convenient, screws are not needed, the dismounting is convenient, and the buckle tail 453 can be pulled downwards to be taken down.
The utility model discloses electromagnetic compatibility wave filter not only can effectual realization to the protection of pulse, can also realize the effective filtering to the noise, and the structural installation is simple swift, can adopt wiring installation or guide rail installation to use, the effectual electromagnetic environment who has solved industrial field, the harsh application problem of natural environment.
The present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. An electromagnetic compatibility filter, characterized by: comprises an upper cover, a base and a circuit board positioned between the upper cover and the base;
an input terminal row interface and an output terminal row interface are respectively arranged on two sides of the circuit board, a protection module is arranged on the circuit board close to the input terminal row interface, and a filtering module is arranged on the circuit board close to the output terminal row interface;
the filter mounting structure comprises a base, a filter, a metal bottom plate or a guide rail mounting plate, a first mounting component and a second mounting component, wherein the corner of the base is provided with a mounting hole for directly mounting and fixing the filter, and the bottom surface of the base is provided with the first mounting component for matching with the metal bottom plate or the guide rail mounting plate;
the base and the upper cover are provided with second mounting assemblies which are matched for use, and a sealed shell is formed by the upper cover, the base and terminal strip interfaces positioned on two sides of the circuit board.
2. The emc filter of claim 1, wherein: the first mounting assembly comprises a positioning hole and a clamping groove which are arranged on the bottom surface of the base.
3. The emc filter of claim 2, wherein: the first mounting assembly comprises a positioning column and a buckle which are arranged on the metal base plate, the positioning column arranged on the metal base plate is combined with a positioning hole at the bottom surface of the base, and the buckle arranged on the metal base plate is combined with a clamping groove at the bottom surface of the base.
4. The emc filter of claim 2, wherein: the first mounting assembly comprises a buckle arranged on the guide rail mounting plate, and a clamping groove combination arranged on the guide rail mounting plate and positioned on the bottom surface of the base.
5. The emc filter of claim 1, wherein: the second installation component comprises a clamping groove arranged on the side face of the base and a buckle arranged on the side face of the upper cover.
6. The emc filter of claim 1, wherein: the input terminal row interface and the output terminal row interface on the two sides of the circuit board are asymmetrically arranged.
7. The emc filter of claim 1, wherein: the base is a cavity shell with an opening at the top.
8. The emc filter of claim 7, wherein: the circuit board is located in the cavity of the base and is fixedly installed on the base through a clamping groove formed in the circuit board and a buckle formed in the base.
9. The emc filter of claim 1, wherein: the base is a semi-encapsulated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222125913.9U CN218483068U (en) | 2022-08-12 | 2022-08-12 | Electromagnetic compatibility filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222125913.9U CN218483068U (en) | 2022-08-12 | 2022-08-12 | Electromagnetic compatibility filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218483068U true CN218483068U (en) | 2023-02-14 |
Family
ID=85165178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222125913.9U Active CN218483068U (en) | 2022-08-12 | 2022-08-12 | Electromagnetic compatibility filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218483068U (en) |
-
2022
- 2022-08-12 CN CN202222125913.9U patent/CN218483068U/en active Active
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