CN105655122B - A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance - Google Patents

A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance Download PDF

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Publication number
CN105655122B
CN105655122B CN201610242682.6A CN201610242682A CN105655122B CN 105655122 B CN105655122 B CN 105655122B CN 201610242682 A CN201610242682 A CN 201610242682A CN 105655122 B CN105655122 B CN 105655122B
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magnet ring
sheath
power transformer
base
ring power
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CN105655122A (en
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张立宝
刘国平
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Qingzhou Baoli Electronic Co Ltd
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Qingzhou Baoli Electronic Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/08Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/027Casings specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12Insulating of windings
    • H01F41/125Other insulating structures; Insulating between coil and core, between different winding sections, around the coil

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The present invention relates to a kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance, in the method, the lead tap of winding coil is drawn upwards, the magnet ring periphery that coil will be wound is arranged the first sheath, then each lead tap is bent downwards and bypasses the outer surface of the first sheath and the side of base successively, and the end of each lead tap is respectively wound around the top ends of correspondence stitch, the circle of kinking one, unnecessary the end of a thread of lead tap end is cut, the second sheath is covered after immersed solder again.The method significantly reduces technology difficulty, reduces product fraction defective, solves puzzlement industry technical difficulty for many years.The magnet ring power transformer simple structure that is obtained by the method, good insulation preformance, safe distance are big.

Description

A kind of magnet ring power transformer manufacture method and magnet ring power supply for lifting safe distance Transformer
Technical field
The present invention relates to small-sized or Mini-magnetic ring power transformer field, specifically one kind can lift the change of magnet ring power supply The production technology of depressor creep age distance and the magnet ring power transformer using the technique productions.
Background technology
Small-sized or Mini-magnetic ring power transformer mainly includes magnet ring and base, wherein, wound on magnet ring it is some primary and Secondary coil, the bottom interval of base installs a plurality of needles pin, and the lead tap of primary coil and secondary coil bypasses the side of base Welded with corresponding stitch respectively behind face.
Existing small-sized or Mini-magnetic ring power transformer usually faces size when specific design is manufactured(Including profile chi Very little and installation dimension)In the case of smaller, the contradiction of safe distance is met again, often occur that high pressure proof voltage is bad to be hit in use The problem worn.The reason for problem occurs in analysis is due to the reserved deficiency of safe distance, during high-temperature soldering, winding wire Insulating barrier damage caused by.
By taking TEX-E three layer insulation wires as an example, its insulating barrier is 260-280 DEG C by the fusing point of film resin, raw for high-volume The part of product, the technique for typically using 420 DEG C of molten tin bath immersed solder, due to metallic conductor in winding wire(Conventional copper aluminium)Lead Heat, necessarily causes to be close to solder joint to the non-linear damage of winding line insulating layer of coil, the reduction of its insulating properties.In order to ensure insulation Performance, it is general using the base used specially for supporting the use TEX-E three layer insulation wires, two distances need to be met during design specialized base: Surface-discharge distance(Ls)Winding wire insulating film fusing destruction length during with immersed solder(Lm), i.e. Ls+Lm is safe distance.
In order to meet the requirement of safe distance, power transformer size(Length)Can accordingly increase, after size increases Power transformer cannot be installed on the pcb board shaped again.Even if new Design PCB plate, power transformer size is too big Will not be used.So, existing method, can only using further strengthen winding wire dielectric thickness and temperature resistant grade come Protecting high temperature welds the non-linear damage to winding line insulating layer, so as to substitute Lm distances.But can not fundamentally ensure safety Distance, while making welding difficulty increase or technique become more complicated.
By strengthening the thickness of winding wire dielectric and the method for temperature resistant grade, although theoretically analysis disclosure satisfy that The requirement of safe distance, but in specific production process, must travel 420 DEG C 240 DEG C of welderings of molten tin bath immersed solder and pcb board Connect this to weld twice, during particularly 420 DEG C of molten tin bath immersed solder, time, terminal to immersed solder immerse the depth of soldering tin With the key element setting of the influence welding quality such as the concentration of scaling powder, very difficult assurance.In theory, immersed solder time lengthening, welds matter Amount is better, but, the destruction due to high temperature to insulation is nonlinear, and the immersed solder time increases necessarily causes winding wire dielectric film to damage Bad length is bigger, causes Ls+Lm safe distances shorter, metal core wire in winding wire(Conventional copper, aluminum)Conductive force Also the insulating barrier that can further damage adjacent winding wire even destroys magnet ring coating, so as to cause winding interlayer, primary and secondary winding Between or winding and magnet ring between it is pressure-resistant bad and puncture.
Due to electronic product small and miniaturization, in power panel(Pcb board)On leave the installation of power transformer for Space also increasingly flattening and narrow and small, so allows for small-sized or Mini-magnetic ring power transformer profile installation dimension and meets peace While dress space, the pressure surface creep age distance and electric clearance of various countries' GB safety requirement are difficult to realize.For example: GB19212.1-2003, GB19212.7-2006 requirement creep age distance and electrical equipment gap width are respectively 4.4 millimeters and 4.17 millimeters, Often there is high pressure proof voltage(GB19212.1-2003, GB19212.7-2006 required value:When primary 220V is input into, primary and secondary Between, primary is to the dielectric strength 3453V between magnetic core)The bad problem for puncturing.In addition, from Such analysis, even if The required value of above-mentioned GB is stopped during design, but in small-sized or Mini-magnetic ring power transformer specific production process, especially When being the 240 DEG C of welding of molten tin bath immersed solder and power panel for carrying out 420 DEG C, the dielectric on winding wire or magnet ring still has greatly Nonlinear damage may be suffered.Therefore, it is very strict to welding technological standards and requirement in specific production, especially to 420 DEG C Weld interval and the working specification requirement for melting immersed solder are very harsh, even so, still occurring in specific production a large amount of bad Product.
Based on above mentioned problem, a kind of simple and practical small-sized or Mini-magnetic ring power transformer production system of present invention design Make method, to solve the puzzlement industry technical barrier that welding difficulty is big, product fraction defective is high for many years.
The content of the invention
The invention solves the problems that first technical problem be to provide a kind of magnet ring power transformer for lifting safe distance Manufacture method, the method step is simple, easy to operate, can be effectively increased creep age distance, so as to immersed solder difficulty is greatly reduced, reduces Product fraction defective.
The invention solves the problems that second technical problem be to provide a kind of simple structure, realize convenient, good insulation preformance and The big magnet ring power transformer of safe distance.
To solve above-mentioned first technical problem, the magnet ring power transformer manufacturer for lifting safe distance of the invention Method, takes magnet ring, base and winding wire first, wherein, magnet ring surface covers insulating coating or is arranged insulation crust, and winding wire includes twining Primary winding coil and secondary winding coil on magnet ring are wound on, the bottom interval of base installs a plurality of needles pin, and the method includes Following steps:
Step 1)The lead tap of primary winding coil and secondary winding coil is drawn upwards, lead tap is reserved long Degree=ring axial magnetic height+base thickness+operation surplus length, wherein, operation surplus length takes 30-40mm;
Step 2) the magnet ring periphery that will wind coil is arranged the first sheath being made up of insulating materials;
Step 3) magnet ring that will be arranged the first sheath is positioned on base;
Step 4)Each lead tap is bent downwards and the outer surface of the first sheath and the side of base is bypassed successively, its In, in concrete operations, bending part needs band certain radian, it is impossible to turn right angle, it is to avoid damage winding line insulating layer;
Step 5)The end of each lead tap is respectively wound around the top ends of correspondence stitch, lead is taken out after the circle of kinking one Unnecessary the end of a thread of cephalic par is cut, and obtains treating immersed solder magnet ring power transformer;
Step 6)To treat that immersed solder magnet ring power transformer is put into that to fill temperature be 380 DEG C of leachings of -440 DEG C of tin liquors straight down Weld groove, and keep the bottom surface of base concordant with liquid level, taken out after immersed solder 3-6 seconds;
Step 7)The periphery of the magnet ring power transformer that immersed solder is completed is arranged the second sheath being made up of insulating materials, dew Go out the stitch of bottom, magnet ring power transformer completes.
First sheath and the second sheath use heat-shrink tube, and heat-shrink tube is put into drying baker after the completion of being arranged, using 90- 120 DEG C of temperature pyrocondensation.The length of the first sheath=+ 2 times of magnet ring thickness ± 2mm of ring axial magnetic+2 times of winding wire diameters of height;The The length of two sheaths=+ 1 times of magnet ring thickness+base thickness ± 2mm of ring axial magnetic+2 times of winding wire diameters of height.Wherein, winding wire diameter Refer to the diameter of winding wire, magnet ring thickness=(Magnet ring external diameter-magnet ring internal diameter)÷2.
In existing solder dip process, the first protective-cover type is not added, only allow immersed solder 3 seconds, otherwise winding wire is just burned, and makes It is artificial to operate very difficult assurance into puncturing.In the method for the present invention, by setting the first sheath, it is equal to and Lm greatly improved Distance so that the heat of copper core is isolated in lead tap during welding, it is impossible to be delivered to coil windings, serves heat-insulated well Effect, the increase of Lm significantly reduces the technology difficulty of immersed solder so that this crucial important procedure, becomes ease of Use work Sequence;Meanwhile, individually be isolated in outside coil windings for lead tap by the first sheath, also increases length of the surface-discharge apart from Ls. It can be seen that, the first sheath has heat-insulated and insulation function concurrently, is added significantly to Ls+Lm safe distances.Thoroughly solve small-sized or miniature Magnet ring power transformer when manufacturing and designing should small size, the sufficiently large contradiction of safe distance, improves small-sized or miniature again The security performance of magnet ring power transformer.
To solve second technical problem, magnet ring power transformer of the invention includes base and is arranged on base top Magnet ring, winds primary coil and secondary coil on magnet ring, the bottom interval of base installs a plurality of needles pin, and it is structurally characterized in that described The periphery of magnet ring is coated with the first sheath, the lead tap of primary coil and secondary coil drawn from the top of magnet ring and bend to Under bypass electrically connected with corresponding stitch behind the outer surface of the first sheath and the side of base successively.
Using said structure, by setting the first sheath so that the heat of copper core cannot be passed in lead tap during welding Coil windings are delivered to, good heat-blocking action is served, the technology difficulty of immersed solder is reduced;Meanwhile, the first sheath takes out lead Head be individually isolated in outside coil windings, increased allow damage lead tap insulating barrier length, that is, increased safely away from From.It can be seen that, the first sheath has heat-insulated and insulation function concurrently, and the pressure-resistant bad problem for puncturing of coil for thoroughly solving improves The security performance of transformer.
The outside of first sheath is arranged with and is coated on the border of the lead tap of primary and secondary coil and base The second interior sheath.Second sheath is used to coat whole transformer, improves the insulation of whole transformer and other elements on pcb board Performance, further increases security.
First sheath and the second sheath are heat-shrink tube.Two sheaths can use heat-shrink tube, using heat-shrink tube Simple structure and easy to operate advantage.
The length of first sheath is respectively turned inwards more than the axial length of magnet ring at the top and bottom of the first sheath Formation is covered in the first sheath annular turnover edge of magnet ring top edge and bottom edge.
The length of second sheath is more than ring axial magnetic length and base thickness sum, the top and bottom of the second sheath It is respectively turned inwards to form the second sheath for being covered in magnet ring top edge and base end face edge annular turnover edge.
In said structure, annular turnover edge is respectively provided with the top and bottom of two sheaths, can further increase interstructural Insulation and heat-proof quality so that the protective effect of sheath is further expanded.
The side of the base offers multiple insertion base top surfaces and bottom surface and the wire casing for accommodating lead tap.By The side of base is bypassed in each lead tap, in order to avoid being interfered between adjacent taps, therefore and wire casing is set.Line Groove plays spacing effect, and each wire casing accommodates lead tap, it is to avoid the position skew of lead tap and mutual Interference.
In sum, the present invention has simple structure, realizes convenient, good insulation preformance and can be effectively increased safe distance Advantage.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is structural representation of the invention;
Fig. 2 is the A portions mplifying structure schematic diagram in Fig. 1;
Fig. 3 is the structural representation of middle magnetic ring of the present invention;
Fig. 4 is the structural representation of base in the present invention.
Specific embodiment
Referring to the drawings, the present invention can lift the magnet ring power transformer manufacture method of safe distance, and magnet ring 1, bottom is taken first Seat 2 and winding wire, the surface of magnet ring 1 covers insulating coating or is arranged insulation crust, winding wire include being wrapped on magnet ring it is primary around Group coil and secondary winding coil, the bottom interval of base 2 install a plurality of needles pin 3, and the method comprises the following steps:
Step 1)The lead tap 5 of primary winding coil and secondary winding coil is drawn upwards, lead tap is reserved Length=ring axial magnetic height+base thickness+operation surplus length, operation surplus length takes 30-40mm;
Step 2) the magnet ring periphery that will wind coil is arranged the first sheath 4 being made up of insulating materials;
Step 3) magnet ring 1 that will be arranged the first sheath 4 is positioned on base 2;
Step 4)Each lead tap 5 is bent downwards and the outer surface of the first sheath 4 and the side of base 2 is bypassed successively;
Step 5)The end of each lead tap 5 is respectively wound around the top ends of correspondence stitch 3, by lead after the circle of kinking one Unnecessary the end of a thread of the end of tap 5 is cut, and obtains treating immersed solder magnet ring power transformer;
Step 6)To treat that immersed solder magnet ring power transformer is put into that to fill temperature be 380 DEG C of leachings of -440 DEG C of tin liquors straight down Weld groove, and keep the bottom surface of base 2 concordant with liquid level, taken out after immersed solder 3-6 seconds;
Step 7)The periphery of the magnet ring power transformer that immersed solder is completed is arranged the second sheath 6 being made up of insulating materials, Expose the stitch 3 of bottom, magnet ring power transformer completes.
Wherein, the first sheath and the second sheath can use the materials with insulated heat function such as insulating tape, insulating paper, Preferred in the present invention, the first sheath 4 and the second sheath 6 use heat-shrink tube, heat-shrink tube to be put into drying baker after the completion of being arranged In, using 90-120 DEG C of temperature pyrocondensation.
For the diameter of heat-shrink tube, chosen according to pyrocondensation ratio, length=+ 2 times of the ring axial magnetic height of the first sheath 4 + 2 times of magnet ring thickness ± 2mm of winding wire diameter.The length of the second sheath 6=ring axial magnetic height+1 times of magnet ring thickness of+2 times of winding wire diameters Degree+base thickness ± 2mm.Two length of sheath choose very crucial, especially the first sheath, and its needs will be except lead tap Outside coil windings be coated in, therefore, that includes ring axial magnetic height, twice winding wire diameter, twice magnet ring thickness with And the allowable error of ± 2mm, wherein, winding wire diameter refers to the diameter of winding wire, magnet ring thickness=(Magnet ring external diameter-magnet ring internal diameter) ÷2.It is to be respectively formed the first sheath annular turnover edge in magnet ring and bottom that the length of the first sheath increases twice magnet ring thickness 41, so as to the winding wire and magnet ring body to magnet ring bottom and top are protected, further increase insulation and heat-proof quality. For the length of the second sheath, it include ring axial magnetic height, 2 times of winding wire diameters, 1 times of magnet ring thickness, base thickness and ± 2mm allowable errors, because the bottom of the second sheath need not form too big annular turnover edge, therefore it only needs to 1 times of magnet ring Thickness, for the annular turnover edge of its bottom, then obtains from the allowable error of 2mm.
In the method for the present invention, by setting the first sheath, it is equal to and Lm distances greatly improved so that lead during welding The heat isolation of copper core in tap, it is impossible to be delivered to coil windings, serve good heat-blocking action, the increase of Lm, significantly Reduce the technology difficulty of immersed solder so that this crucial important procedure, become ease of Use operation;Meanwhile, the first sheath will Lead tap is individually isolated in outside coil windings, also increases length of the surface-discharge apart from Ls.It can be seen that, the first sheath have concurrently every Heat and the function of insulation, are added significantly to Ls+Lm safe distances.Thoroughly solve small-sized or Mini-magnetic ring power transformer design system When making should small size, the sufficiently large contradiction of safe distance, improves small-sized or Mini-magnetic ring power transformer safety again Performance.
Referring to the drawings, magnet ring power transformer of the invention includes base and is arranged on the magnet ring 1 on base top, magnet ring 1 Upper winding primary coil and secondary coil, the bottom interval of base 2 install a plurality of needles pin 3, and the periphery of magnet ring 1 is coated with the first shield Set 4, the lead tap 5 of primary coil and secondary coil is drawn and is bent from the top of magnet ring 1 and bypasses the first sheath 4 successively downwards Outer surface and base 2 side after electrically connected with corresponding stitch 3.Wherein, the side of base 2 offers multiple insertion bases Top surface and bottom surface and the wire casing 7 for accommodating lead tap 5.The side of base 2 is bypassed due to each lead tap 5, in order to Avoid being interfered between adjacent taps, therefore and wire casing 7 is set.Wire casing 7 plays spacing effect, and each wire casing 7 accommodates one Root lead tap 5, it is to avoid the position skew of lead tap and mutual interference.
In said structure, by setting the first sheath 4 so that the heat of copper core cannot be passed in lead tap 5 during welding Coil windings are delivered to, good heat-blocking action is served, the technology difficulty of immersed solder is reduced;Meanwhile, the first sheath 4 takes out lead First 5 are individually isolated in outside coil windings, increased allow damage lead tap insulating barrier length, that is, increased safety away from From.It can be seen that, the first sheath 4 has heat-insulated and insulation function concurrently, and the pressure-resistant bad problem for puncturing of coil for thoroughly solving improves The security performance of transformer.
Referring to the drawings, the outside of the first sheath 4 is arranged with the border by the lead tap 5 of primary and secondary coil and base 2 It is coated on the second interior sheath 6.Second sheath 6 is used to coat whole transformer, improves other on whole transformer and pcb board The insulating properties of element, using the structure of duplex sheath, progressive one improves the security performance of transformer.Wherein, the first sheath 4 Heat-shrink tube is with the second sheath 6, make use of shrinkable tube structure simple and easy to operate advantage.
Referring to the drawings, the length of the first sheath 4 more than the axial length of magnet ring 1, distinguish by the top and bottom of the first sheath 4 Fold inward forms the first sheath annular turnover for being covered in the top edge of magnet ring 1 and bottom edge along 41.The length of the second sheath 6 More than the axial length of magnet ring 1 and the thickness sum of base 2, the top and bottom of the second sheath 6 are respectively turned inwards to form covering degree Turned down along 61 in the second sheath annular of the top edge of magnet ring 1 and the bottom edge of base 2.Setting annular turnover edge can further increase Plus interstructural insulation and heat-proof quality so that the protective effect of sheath is further expanded.
In sum, the invention is not restricted to above-mentioned specific embodiment.Those skilled in the art, it is of the invention not departing from On the premise of spirit and scope, some changes and modification can be done.Protection scope of the present invention should be with claim of the invention It is defined.

Claims (9)

1. a kind of magnet ring power transformer manufacture method for lifting safe distance, takes magnet ring(1), base(2)And winding wire, magnetic Ring(1)Surface covers insulating coating or is arranged insulation crust, and winding wire includes the primary winding coil and secondary that are wrapped on magnet ring Winding coil, base(2)Bottom interval install a plurality of needles pin(3), it is characterized in that the method comprises the following steps:
Step 1)By the lead tap of primary winding coil and secondary winding coil(5)Draw upwards, reserve lead tap long Degree=ring axial magnetic height+base thickness+operation surplus length;
Step 2) the magnet ring periphery that will wind coil is arranged the first sheath being made up of insulating materials(4);
Step 3) the first sheath will be arranged(4)Magnet ring(1)It is positioned over base(2)On;
Step 4)By each lead tap(5)Bending downwards simultaneously bypasses the first sheath successively(4)Outer surface and base(2)Side Face;
Step 5)By each lead tap(5)End be respectively wound around correspondence stitch(3)Top ends, by lead after the circle of kinking one Tap(5)Unnecessary the end of a thread of end is cut, and obtains treating immersed solder magnet ring power transformer;
Step 6)To treat that immersed solder magnet ring power transformer is put into that to fill temperature be 380 DEG C of immersed solder of -440 DEG C of tin liquors straight down Groove, and keep base(2)Bottom surface it is concordant with liquid level, after immersed solder 3-6 seconds take out;
Step 7)The periphery of the magnet ring power transformer that immersed solder is completed is arranged the second sheath being made up of insulating materials(6), dew Go out the stitch of bottom(3), magnet ring power transformer completes.
2. the magnet ring power transformer manufacture method of safe distance can be lifted as claimed in claim 1, it is characterized in that step 1) In operation surplus length take 30-40mm.
3. the magnet ring power transformer manufacture method of safe distance can be lifted as claimed in claim 1, it is characterized in that described One sheath(4)With the second sheath(6)Heat-shrink tube is used, heat-shrink tube is put into drying baker after the completion of being arranged, using 90-120 DEG C temperature pyrocondensation.
4. the magnet ring power transformer manufacture method of safe distance can be lifted as claimed in claim 3, it is characterized in that described One sheath(4)+ 2 times of magnet ring thickness ± 2mm of length=ring axial magnetic+2 times of winding wire diameters of height;Second sheath(6)Length= + 1 times of magnet ring thickness+base thickness ± 2mm of ring axial magnetic+2 times of winding wire diameters of height.
5. a kind of magnet ring power transformer, including base and the magnet ring for being arranged on base top(1), magnet ring(1)Upper winding is primary Coil and secondary coil, base(2)Bottom interval install a plurality of needles pin(3), it is characterized in that the magnet ring(1)Periphery cladding There is the first sheath(4), the lead tap of primary coil and secondary coil(5)From magnet ring(1)Top draw and bend downwards according to It is secondary to bypass the first sheath(4)Outer surface and base(2)Side after with corresponding stitch(3)Electrical connection;First sheath (4)Length be more than magnet ring(1)Axial length, the first sheath(4)Top and bottom be respectively turned inwards to be formed and be covered in Magnet ring(1)The first sheath annular turnover edge of top edge and bottom edge(41).
6. magnet ring power transformer as claimed in claim 5, it is characterized in that first sheath(4)Outside be arranged with by The lead tap of primary and secondary coil(5)And base(2)Border be coated on the second interior sheath(6).
7. magnet ring power transformer as claimed in claim 5, it is characterized in that first sheath(4)With the second sheath(6) It is heat-shrink tube.
8. magnet ring power transformer as claimed in claim 6, it is characterized in that second sheath(6)Length be more than magnet ring (1)Axial length and base(2)Thickness sum, the second sheath(6)Top and bottom be respectively turned inwards to be formed and be covered in magnetic Ring(1)Top edge and base(2)The second sheath annular turnover edge of bottom edge(61).
9. the magnet ring power transformer as any one of claim 5-8, it is characterized in that the base(2)Side open up There are multiple insertion base top surfaces with bottom surface and for accommodating lead tap(5)Wire casing(7).
CN201610242682.6A 2016-04-19 2016-04-19 A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance Active CN105655122B (en)

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CN107516570A (en) * 2017-09-06 2017-12-26 长兴华强电子股份有限公司 A kind of inductance element and its manufacture method with heat-shrinkable T bush
CN107516576A (en) * 2017-10-25 2017-12-26 德清明宇电子科技有限公司 A kind of more spacing magnet ring shells and magnetic ring component with plug-in unit
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CN108022736A (en) * 2017-12-27 2018-05-11 广州致远电子有限公司 A kind of micropower power supply module

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US6507260B1 (en) * 2000-04-27 2003-01-14 Echelon Corporation Electrical transformer for use with twisted pair
CN201616335U (en) * 2009-11-24 2010-10-27 北京新创四方电子有限公司 High-frequency drive transformer
CN104517710A (en) * 2013-10-07 2015-04-15 三星电机株式会社 Coil component
CN204946685U (en) * 2015-09-11 2016-01-06 珠海科德电子有限公司 The high coupling transformer of a kind of low interference
CN205542389U (en) * 2016-04-19 2016-08-31 青州市宝利电子有限公司 Magnetic ring power transformer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6507260B1 (en) * 2000-04-27 2003-01-14 Echelon Corporation Electrical transformer for use with twisted pair
CN201616335U (en) * 2009-11-24 2010-10-27 北京新创四方电子有限公司 High-frequency drive transformer
CN104517710A (en) * 2013-10-07 2015-04-15 三星电机株式会社 Coil component
CN204946685U (en) * 2015-09-11 2016-01-06 珠海科德电子有限公司 The high coupling transformer of a kind of low interference
CN205542389U (en) * 2016-04-19 2016-08-31 青州市宝利电子有限公司 Magnetic ring power transformer

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