CN216055097U - Anti-interference filter - Google Patents
Anti-interference filter Download PDFInfo
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- CN216055097U CN216055097U CN202122584749.3U CN202122584749U CN216055097U CN 216055097 U CN216055097 U CN 216055097U CN 202122584749 U CN202122584749 U CN 202122584749U CN 216055097 U CN216055097 U CN 216055097U
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- magnetic core
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- insulating framework
- framework
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Abstract
The utility model relates to an anti-interference filter, which comprises an insulating framework, two magnetic cores and a steel clamp, wherein the insulating framework is provided with two winding grooves, a group of coils are wound in each winding groove, four corners at the bottom of the insulating framework are respectively and fixedly provided with a pin, and two ends of each coil are respectively welded and fixed with two adjacent pins; a magnetic core mounting hole which penetrates through the insulating framework from left to right is formed in the insulating framework, the lower side arm of the magnetic core is inserted into the magnetic core mounting hole from one end of the magnetic core mounting hole, and the two magnetic cores are bilaterally symmetrical and clamped in the steel clamp; and a plurality of heat dissipation holes which are communicated with the left and the right are also formed in the insulating framework and are communicated with the magnetic core mounting hole and the two winding grooves. The beneficial effects are that: the air circulates in the heat dissipation holes, the heat dissipated by the coil is taken away, the heat is prevented from accumulating inside the coil, and the purpose of preventing the insulating framework from deforming or burning out due to high temperature is achieved.
Description
Technical Field
The utility model relates to the field of filters, in particular to an anti-interference filter.
Background
The common mode filter is used for suppressing EMI noise of electronic equipment. UU type common mode filter includes magnetic core, skeleton, coil, metal elasticity presss from both sides, contact pin. The coil is wound in the winding groove, so that heat generated in the coil is difficult to dissipate, and the problems of high-temperature deformation of the framework or burning-out of the coil are easily caused.
SUMMERY OF THE UTILITY MODEL
The present invention aims to overcome the above problems in the prior art and to provide an antijam filter.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
an anti-interference filter comprises a horizontal insulating framework, two U-shaped magnetic cores and a U-shaped steel clamp, wherein two winding grooves are formed in the insulating framework, a group of coils are wound in each winding groove, four corners of the bottom of the insulating framework are fixedly provided with a pin respectively, and two ends of each coil are welded and fixed with two adjacent pins respectively; magnetic core mounting holes which penetrate through the insulating framework from left to right are formed in the insulating framework, lower side arms of the magnetic cores are inserted into the magnetic core mounting holes from one ends of the magnetic core mounting holes, and the two magnetic cores are bilaterally symmetrical and clamped in the steel clamp; and a plurality of heat dissipation holes which are communicated from left to right are further formed in the insulating framework, and the heat dissipation holes are communicated with the magnetic core mounting hole and the two winding grooves.
Wherein, the longitudinal section of the heat dissipation hole is isosceles trapezoid.
Furthermore, the coil is wrapped with a layer of heat-conducting silicon tape.
Furthermore, two circles of metal rings which are parallel up and down are arranged on the pins, the head of the coil is wound on the pins between the two metal rings, and the head of the coil, the pins and the two metal rings are welded and fixed.
The insulation framework is provided with two winding grooves, a longitudinal partition plate is arranged between the two winding grooves and on the insulation framework, the bottom ends of the left end and the right end of the insulation framework are respectively provided with a supporting block, and the bottom end of the longitudinal partition plate and the bottom ends of the two supporting blocks are located on the same plane.
The top of the insulating framework is provided with a first clamping groove used for fixing the magnetic core, the end face of the insulating framework is provided with a second clamping groove used for fixing the magnetic core, the middle of the magnetic core is clamped in the second clamping groove, and the upper side wall of the magnetic core is clamped in the first clamping groove.
The utility model has the beneficial effects that: set up the louvre that link up about in insulating skeleton to make louvre and magnetic core mounting hole and two wire winding grooves be linked together, the air circulates in the louvre, takes away the heat that the coil gived off, avoids the heat to gather inside the coil, realizes preventing insulating skeleton because of high temperature deformation or the purpose that the coil burns out.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
fig. 1 is a schematic structural view of a filter in an embodiment of the present invention, as viewed from the front thereof;
FIG. 2 is a schematic diagram of a filter according to an embodiment of the present invention after being cut longitudinally along its long axis;
FIG. 3 is a schematic structural view of an insulating frame according to an embodiment of the present invention, viewed from one side thereof;
FIG. 4 is a schematic structural view of an insulating frame according to an embodiment of the present invention, as viewed from the front thereof;
FIG. 5 is a schematic view of the AA-oriented structure of FIG. 4;
fig. 6 is a schematic structural diagram of a pin in an embodiment of the utility model.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 6, an anti-interference filter, including horizontal insulating skeleton 1, two magnetic cores 2 of U type, the steel clamp 3 of U type, be equipped with two wire winding grooves 4 on the insulating skeleton 1, it has a set of coil 5 to coil in every wire winding groove 4, pin 6 of fixed mounting respectively at four corners of insulating skeleton 1 bottom, two of coil 5 respectively with two adjacent pin 6 welded fastening, specifically, be equipped with two circles of metal ring 7 that are parallel from top to bottom on pin 6, the head of coil 5 is convoluteed on pin 6 between two metal ring 7, and the head of coil 5 and pin 6 and two metal ring 7 welded fastening, improve the fastness and the stability that coil head and pin are connected.
Magnetic core mounting hole 8 that runs through about being equipped with in insulating skeleton 1, magnetic core mounting hole 8 is inserted from one end of magnetic core mounting hole 8 to the downside arm of magnetic core 2, two 2 bilateral symmetry of magnetic core are pressed from both sides in steel clamp 3, the top of insulating skeleton 1 is equipped with the first draw-in groove 9 that is used for fixed magnetic core 2, the terminal surface of insulating skeleton 1 is equipped with the second draw-in groove 10 that is used for fixed magnetic core, the middle part card of magnetic core 2 is in second draw-in groove 10, the last side wall card of magnetic core 2 is in first draw-in groove 9, guarantee that two stable installations of U type magnetic core are on insulating skeleton, avoid two U type magnetic cores to drop from insulating skeleton.
Still be equipped with four louvres 11 that link up about in the insulating skeleton 1, and the longitudinal section of louvre 11 is isosceles trapezoid, and louvre 11 is linked together with magnetic core mounting hole 8 and two wire winding grooves 4, and the air circulates in louvre 11, takes away the heat that coil 5 gived off, avoids the heat to gather inside coil 5, realizes preventing insulating skeleton 1 because of high temperature deformation or the purpose that coil 5 burns out. The coil 5 is wrapped with a layer of heat conductive silicon adhesive tape 12, the heat conductive silicon adhesive tape 12 can prevent the coil 5 from being exposed and will not block the heat dissipation in the coil 5.
In addition, a longitudinal partition plate 13 is arranged between the two winding grooves 4 on the insulating framework 1, the bottom ends of the left end and the right end of the insulating framework 1 are respectively provided with a supporting block 14, the bottom end of the longitudinal partition plate 13 and the bottom ends of the two supporting blocks 14 are arranged on the same plane, so that a heat dissipation space between the bottom of the coil 5 and a circuit board can be ensured, and the stability of the insulating framework 1 supported on the circuit board can be improved.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.
Claims (6)
1. An antijam filter, characterized by: the coil winding device comprises a horizontal insulating framework, two U-shaped magnetic cores and a U-shaped steel clamp, wherein two winding grooves are formed in the insulating framework, a group of coils are wound in each winding groove, four corners of the bottom of the insulating framework are respectively and fixedly provided with a pin, and two ends of each coil are respectively welded and fixed with two adjacent pins; magnetic core mounting holes which penetrate through the insulating framework from left to right are formed in the insulating framework, lower side arms of the magnetic cores are inserted into the magnetic core mounting holes from one ends of the magnetic core mounting holes, and the two magnetic cores are bilaterally symmetrical and clamped in the steel clamp; and a plurality of heat dissipation holes which are communicated from left to right are further formed in the insulating framework, and the heat dissipation holes are communicated with the magnetic core mounting hole and the two winding grooves.
2. The antijam filter of claim 1, wherein: the longitudinal section of the heat dissipation hole is isosceles trapezoid.
3. The antijam filter of claim 1, wherein: the coil is externally wrapped with a layer of heat-conducting silicon adhesive tape.
4. The antijam filter of claim 1, wherein: the coil is characterized in that two circles of metal rings which are parallel up and down are arranged on the pins, the head of the coil is wound on the pins between the two metal rings, and the head of the coil, the pins and the two metal rings are welded and fixed.
5. The antijam filter of claim 1, wherein: the insulation framework is provided with a longitudinal partition plate between two winding grooves, the bottom ends of the left end and the right end of the insulation framework are respectively provided with a supporting block, and the bottom end of the longitudinal partition plate and the bottom ends of the two supporting blocks are located on the same plane.
6. The antijam filter of claim 1, wherein: the top of insulating skeleton is equipped with the first draw-in groove that is used for fixed magnetic core, the terminal surface of insulating skeleton is equipped with the second draw-in groove that is used for fixed magnetic core, the middle part card of magnetic core is in the second draw-in groove, the last lateral wall card of magnetic core is in first draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584749.3U CN216055097U (en) | 2021-10-26 | 2021-10-26 | Anti-interference filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584749.3U CN216055097U (en) | 2021-10-26 | 2021-10-26 | Anti-interference filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216055097U true CN216055097U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122584749.3U Active CN216055097U (en) | 2021-10-26 | 2021-10-26 | Anti-interference filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216055097U (en) |
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2021
- 2021-10-26 CN CN202122584749.3U patent/CN216055097U/en active Active
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