CN105913999A - Improved structure of power filter - Google Patents

Improved structure of power filter Download PDF

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Publication number
CN105913999A
CN105913999A CN201610330017.2A CN201610330017A CN105913999A CN 105913999 A CN105913999 A CN 105913999A CN 201610330017 A CN201610330017 A CN 201610330017A CN 105913999 A CN105913999 A CN 105913999A
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CN
China
Prior art keywords
magnetic core
skeleton base
improved structure
framework base
inner cavity
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.)
Granted
Application number
CN201610330017.2A
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Chinese (zh)
Other versions
CN105913999B (en
Inventor
陈钢明
钱江辉
王飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAINING LIANFENG DONGJIN ELECTRONICS Co Ltd
Original Assignee
HAINING LIANFENG DONGJIN ELECTRONICS Co Ltd
Priority date (The priority date 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 date listed.)
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Application filed by HAINING LIANFENG DONGJIN ELECTRONICS Co Ltd filed Critical HAINING LIANFENG DONGJIN ELECTRONICS Co Ltd
Priority to CN201610330017.2A priority Critical patent/CN105913999B/en
Publication of CN105913999A publication Critical patent/CN105913999A/en
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Publication of CN105913999B publication Critical patent/CN105913999B/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/045—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
    • H01F2017/046—Fixed inductances of the signal type  with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Filters And Equalizers (AREA)

Abstract

The invention discloses an improved structure of a power filter. The improved structure of the power filter comprises a framework base and a magnetic core placed in an inner cavity of the framework base. Copper wires are wound on the magnetic core, four pins are arranged at the bottom of the framework base, the magnetic core is in a square shape, the copper wires are flat copper wires, the flat copper wires are connected to two symmetrical side columns of the square-shaped magnetic core in a wound mode respectively, winding positioning holes facilitating automatic winding are formed in the positions, in the centers of the side columns, of the upper end face of the magnetic core, small cylinders are arranged on the side wall of the inner cavity of the framework base and connected in the winding positioning holes in a clamped mode, an orientation groove is formed in the lower end face of the magnetic core, an orientation protrusion matched with the orientation groove is arranged on the side wall of the inner cavity of the framework base, heat dissipation holes are formed in the periphery of the side wall of the inner cavity of the framework base, and the orientation groove is in a trapezoid or triangle shape. The improved structure of the power filter is low in manufacturing cost and good in EMI resistance and shielding effect.

Description

A kind of power-supply filter improved structure
Present patent application is the divisional application of invention and created name " a kind of UC type power-supply filter ", The filing date of original application December in 2014 5 days, Application No. 2014107339632.
Technical field
The present invention relates to a kind of UC type power-supply filter.
Background technology
At present, power-supply filter is used on transformator, nowadays the sector development comparative maturity, general enterprises Main development direction trend towards reducing artificial, it is achieved automatization, reduce cost.Power-supply filter is also simultaneously Often used in the industry such as TV, illumination, and this kind of industry is usually present electromagnetic radiation pollution, so increasing Add anti-EMI filter and shield effectiveness, become the Main Topics of this kind of power-supply filter.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of power-supply filter improved structure, manufacturing cost Low, and anti-EMI filter performance and shield effectiveness are good.
The technical scheme is that a kind of power-supply filter improved structure, including skeleton base and be placed on Magnetic core on skeleton base inner chamber, described magnetic core is wound with copper cash, and the bottom of skeleton base is provided with 4 and draws Foot, described magnetic core is hollow, and described copper cash is flat copper wire, and flat copper wire is rotating around being connected on a mouthful word On two symmetrical side columns of type magnetic core, the upper surface of magnetic core is provided with in the center of side column and facilitates automatic winding Coiling location hole, described skeleton base intracavity sidewall is provided with small column, and small column is connected in coiling In hole, location, described magnetic core is provided with guide slot in lower surface, and described skeleton base intracavity sidewall is provided with The locator projections portion mated with guide slot, the intracavity sidewall surrounding of described skeleton base is equipped with louvre, Described guide slot is shaped as trapezoidal or triangle.
Preferably, described hole, coiling location is rectangle.
Using after the technical program, the winding mode in this programme is hollow magnetic core, than tradition use circle, EE type magnetic core more easily realizes around line automation, and the magnetic core of hollow is provided with hole, coiling location, coiling Hole, location is for the locating dowel being directed on spooling equipment, and after having good positioning, rotary magnetic core can be quickly real the most automatically Existing coiling, it is possible to achieve increasingly automated, reduces cost, and compares than former EE type magnetic core, hollow Magnetic core more improves magnetic core utilization rate, and secondly using in this programme is flat copper wire, and traditional copper cash is circular, Flat copper wire is limited in linear distance relative to the advantage of circular copper cash, changes the shape of line, than The general circular copper cash number of turn can be many around about about 3 times, thus promote the inductance value of entirety, and are conducive to more Good heat radiation, the copper cash of same sectional area, area of dissipation is significantly increased, additionally, due to more identical than original product The number of turn can reduce the number of plies, therefore can reduce parasitic capacitance value, product anti-EMI filter performance is greatly improved, Finally utilize the structure that small column is set on skeleton base, well have matched original coiling in magnetic core fixed Hole, position, so that magnetic core is more preferable with skeleton base assembling precision, prevents magnetic core from rocking.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic three dimensional views of the present invention；
Accompanying drawing 2 is schematic top plan view of the present invention；
Accompanying drawing 3 is the schematic diagram of skeleton base；
Accompanying drawing 4 is the schematic diagram of magnetic core and copper cash.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
As shown in Figures 1 to 4, a kind of UC type power-supply filter, including skeleton base 1 and be placed on skeleton Magnetic core 2 in pedestal inner chamber, described magnetic core is wound with copper cash 3, and the bottom of skeleton base is provided with 4 pins 11, described magnetic core is hollow, and the magnetic core both sides of hollow are two side columns 21, and described copper cash is flat Flat copper cash, flat copper wire rotating around on two the symmetrical side columns being connected on hollow magnetic core, the upper surface of magnetic core The hole 22, coiling location facilitating automatic winding, the position, position in hole, coiling location it is provided with in the center of side column In axial line and the intersection of magnetic core upper surface of side column, hole, coiling location is for determining of being directed on spooling equipment Position post, described hole 22, coiling location is preferably rectangular, and rectangular indexing holes mates with rectangle locating dowel and can realize Circumference is spacing, it is not recommended that use circular port, and circular port cannot realize circumferential spacing with circular locating dowel, when fixed After position post is fixing with hole, location, open spooling equipment can automatic rotary magnetic core, to realize automatic winding, phase Convenient automatization is wanted for traditional circular magnetic core, reduces cost, and compare than former EE type magnetic core, The magnetic core of hollow more improves magnetic core utilization rate, and secondly using in this programme is flat copper wire, traditional copper cash For circle, flat copper wire is limited in linear distance relative to the advantage of circular copper cash, changes line Shape, can be many around about about 3 times than the general circular copper cash number of turn, thus promote the inductance value of entirety, and Being conducive to preferably heat radiation, the copper cash of same sectional area, area of dissipation is significantly increased, former additionally, due to ratio The number of turn that product is identical can reduce the number of plies, therefore can reduce parasitic capacitance value, product anti-EMI filter is greatly improved Performance, additionally described skeleton base intracavity sidewall is provided with small column 12, and small column is connected in coiling location In hole, utilize small column and the cooperation in hole, coiling location, so that magnetic core assembles precision with skeleton base More preferably, prevent magnetic core from rocking, be particularly suitable for using the power-supply filter installed on the transformer, because transformator During work, vibration is relatively big, and rocking of magnetic core is the biggest, and utilizes the structure of this programme can avoid this very well Class problem.
As shown in Figure 2, described magnetic core is provided with guide slot 23, described skeleton base inner chamber in lower surface Sidewall is provided with the locator projections portion 13 mated with guide slot, and the advantage of this design is to allow operator in reality The installed surface of magnetic core, because the magnetic core in this programme is hollow magnetic core, both sides can be correctly differentiated during the assembling of border Column symmetry and set, but reality is different according to working environment, the direction of its coiling is different, exists counterclockwise Two kinds of different winding modes of coiling and coiling clockwise, but it is less susceptible in appearance differentiate, operator Easily put back when actual installation, and after being provided with guide slot and locator projections portion, can more intuitively be had It is oriented assembling to effect, it is to avoid the generation of above-mentioned situation, as preferably, described guide slot 23 is shaped as Trapezoidal or triangle, trapezoidal or triangle has certain conical surface guide effect, more when actual installation Add and facilitate para-position；It addition, the intracavity sidewall of described skeleton base is equipped with louvre 14 for 4 weeks, magnetic core with Copper cash can produce certain heat when real work, the existence of louvre have help by this partial heat as early as possible from Distribute in skeleton base.
Below only the present invention preferably example is described, but is not to be construed as limitations on claims. The present invention not only limits to and above example, and its concrete structure allows to change, and those skilled in the art can root It is variously modified according to the present invention and deforms, without departing from the spirit of the present invention, institute of the present invention all should be belonged to Scope defined in attached claim.

Claims (2)

1. a power-supply filter improved structure, including skeleton base (1) and be placed on skeleton base inner chamber In magnetic core (2), described magnetic core is wound with copper cash (3), the bottom of skeleton base is provided with 4 pins (11), It is characterized in that: described magnetic core is hollow, described copper cash is flat copper wire, flat copper wire rotating around Being connected on two symmetrical side columns (21) of hollow magnetic core, the upper surface of magnetic core installs at the centre bit of side column Having coiling hole, location (22) facilitating automatic winding, described skeleton base intracavity sidewall is provided with small column (12), small column is connected in hole, coiling location, and described magnetic core is provided with guide slot (23), institute in lower surface The skeleton base intracavity sidewall stated is provided with the locator projections portion (13) mated with guide slot, described skeleton base The intracavity sidewall surrounding of seat is equipped with louvre (14), and described guide slot (23) is shaped as trapezoidal or three Dihedral.
A kind of power-supply filter improved structure the most according to claim 1, it is characterised in that: described Coiling hole, location (22) is rectangle.
CN201610330017.2A 2014-12-05 2014-12-05 A kind of UC types power-supply filter structure Active CN105913999B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610330017.2A CN105913999B (en) 2014-12-05 2014-12-05 A kind of UC types power-supply filter structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410733963.2A CN104505216B (en) 2014-12-05 2014-12-05 A kind of UC type power-supply filter
CN201610330017.2A CN105913999B (en) 2014-12-05 2014-12-05 A kind of UC types power-supply filter structure

Related Parent Applications (1)

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CN105913999A true CN105913999A (en) 2016-08-31
CN105913999B CN105913999B (en) 2017-12-19

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CN201610330236.0A Active CN105914000B (en) 2014-12-05 2014-12-05 A kind of UC types power-supply filter
CN201610330796.6A Active CN105914001B (en) 2014-12-05 2014-12-05 A kind of UC types power-supply filter structure
CN201610330017.2A Active CN105913999B (en) 2014-12-05 2014-12-05 A kind of UC types power-supply filter structure
CN201410733963.2A Active CN104505216B (en) 2014-12-05 2014-12-05 A kind of UC type power-supply filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105914000B (en) * 2014-12-05 2017-09-08 海宁联丰东进电子有限公司 A kind of UC types power-supply filter
CN106098321B (en) * 2016-07-05 2017-12-19 海宁联丰东进电子有限公司 A kind of assembly type multifunctional filter
CN107093513A (en) * 2017-06-23 2017-08-25 太仓市变压器有限公司 A kind of magnetic core of transformer component
CN107545975A (en) * 2017-08-09 2018-01-05 海宁联丰东进电子有限公司 A kind of magnetic core of transformer for increasing inductance value and differential mode sensibility reciprocal
CN109102995A (en) * 2018-09-21 2018-12-28 无锡晶磊电子有限公司 A kind of ETC type inductor and its manufacturing method
CN112562991B (en) * 2020-11-04 2022-03-04 广东电网有限责任公司 Heat radiator for dry-type transformer coil

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CN2745198Y (en) * 2004-06-28 2005-12-07 施学铭 A power filter
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KR200444582Y1 (en) * 2008-09-04 2009-05-25 크로바하이텍(주) Line filter
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Publication number Priority date Publication date Assignee Title
CN2745198Y (en) * 2004-06-28 2005-12-07 施学铭 A power filter
CN201001041Y (en) * 2007-01-11 2008-01-02 范干 Electric power filter
KR200444582Y1 (en) * 2008-09-04 2009-05-25 크로바하이텍(주) Line filter
EP2395518A1 (en) * 2010-06-09 2011-12-14 STS Spezial- Trasformatoren- Stockach GmbH & Co. Housing for construction of air-gapped cylindrical magnetic cores for inductive components
CN202121501U (en) * 2011-02-17 2012-01-18 施志豪 Ultra-thin type multifunctional power supply filter
US20120280779A1 (en) * 2011-05-02 2012-11-08 Hsueh-Ming Shih Common mode choke emi filter of an led driver
CN202887903U (en) * 2011-09-23 2013-04-17 昱京科技股份有限公司 Structure of ultra-thin filter
CN202275704U (en) * 2011-10-19 2012-06-13 北京瑞阳安科技术有限公司 I-shaped inductance structure
CN105914001A (en) * 2014-12-05 2016-08-31 海宁联丰东进电子有限公司 UC-type power filter improved structure
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Also Published As

Publication number Publication date
CN105914001A (en) 2016-08-31
CN105913999B (en) 2017-12-19
CN105914001B (en) 2017-09-08
CN104505216B (en) 2016-08-24
CN104505216A (en) 2015-04-08
CN105914000A (en) 2016-08-31
CN105914000B (en) 2017-09-08

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