CN105655122A - Manufacturing method capable of increasing safe distance of magnet ring power transformer and magnet ring power transformer - Google Patents
Manufacturing method capable of increasing safe distance of magnet ring power transformer and magnet ring power transformer Download PDFInfo
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- CN105655122A CN105655122A CN201610242682.6A CN201610242682A CN105655122A CN 105655122 A CN105655122 A CN 105655122A CN 201610242682 A CN201610242682 A CN 201610242682A CN 105655122 A CN105655122 A CN 105655122A
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- magnet ring
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- mains transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus 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
- H01F41/02—Apparatus 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
- H01F41/04—Apparatus 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
- H01F41/06—Coil winding
- H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
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- 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
- H01F27/02—Casings
- H01F27/027—Casings specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus 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
- H01F41/02—Apparatus 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
- H01F41/04—Apparatus 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
- H01F41/12—Insulating of windings
- H01F41/125—Other 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 invention relates to a manufacturing method capable of increasing safe distance of a magnet ring power transformer and a magnet ring power transformer. In the manufacturing method, lead taps of a winding coil are leaded out upward, a first sheath is arranged at the periphery of a magnet ring wound with a coil, then each lead tap is bent downward and sequentially bypasses the outer surface of the first sheath and the side of a base, the end part of each lead tap is wound at the top part of a corresponding pin, a wire is wound for one turn, excessive wire ends at the end parts of the lead taps are cut off, dip soldering is carried out, and then a second sheath is sheathed. The manufacturing method provided by the invention has the advantages that process difficulty is greatly reduced, the product reject ratio is reduced, and technical difficulty troubling the industry for years is solved; the magnet ring power transformer obtained by adopting the manufacturing method is simple in structure, good in insulating property and long in safe distance.
Description
Technical field
The present invention relates to small-sized or Mini-magnetic ring mains transformer field, specifically a kind of magnet ring mains transformer manufacture method promoting safe distance and magnet ring mains transformer obtained by this method.
Background technology
Small-sized or Mini-magnetic ring mains transformer mainly includes magnet ring and base, wherein, being wound around some primary and secondary coils on magnet ring, the bottom interval of base is installed after the side of base is walked around in the lead-in wire tap of many stitch, primary coil and secondary coil and is welded with corresponding stitch respectively.
Existing small-sized or Mini-magnetic ring mains transformer usually faces when specific design manufactures in size (including overall dimensions and installation dimension) less situation, meets the contradiction of safe distance again, often occurs the bad problem punctured of high pressure proof voltage in using. Analyzing the reason this problem occur is due to the reserved deficiency of safe distance, in high-temperature soldering process, caused by the insulating barrier of winding wire damages.
For TEX-E three layer insulation wire, its insulating barrier is 260-280 DEG C by the fusing point of film resin, for the part produced in enormous quantities, the technique being generally adopted the molten tin bath immersed solder of 420 DEG C, due to metal core wire (conventional copper, aluminum) heat conduction in winding wire, necessarily causing the non-linear damage of winding wire insulating barrier near solder joint to coil, its insulating properties reduce. In order to ensure insulating properties, generally support the use the base used specially of TEX-E three layer insulation wire, two distances need to be met: when surface-discharge distance (Ls) and immersed solder, winding wire insulation tunicle fusing destroys length (Lm), and namely Ls+Lm is safe distance during design specialized base.
In order to meet the requirement of safe distance, mains transformer size (length) can increase accordingly, and the mains transformer after size increase cannot be installed to again on the pcb board shaped. Even if new Design PCB plate, mains transformer is too large in size without being used. So, in existing way, carry out the protecting high temperature welding non-linear damage to winding line insulating layer only with the dielectric thickness and temperature resistant grade of strengthening winding wire further, thus substituting Lm distance. But can not fundamentally ensure safe distance, make welding difficulty increase simultaneously or technique becomes more complicated.
The way of thickness and temperature resistant grade by strengthening winding wire dielectric, although analyzing the requirement that disclosure satisfy that safe distance theoretically, but in concrete production process, must travel the molten tin bath immersed solder of 420 DEG C and pcb board 240 DEG C welds this twice welding, particularly during the molten tin bath immersed solder of 420 DEG C, the key element that the time of immersed solder, the degree of depth of terminal immersion soldering tin and the concentration etc. of scaling powder affect welding quality sets, very difficult assurance. In theory, immersed solder time lengthening, welding quality is more good, but, due to high temperature to insulation destruction be nonlinear, the increase of immersed solder time necessarily causes that the length that winding wire dielectric film damages is more big, causes Ls+Lm safe distance more short, the insulating barrier that in winding wire, the conductive force of metal core wire also can damage adjacent winding wire further even destroys magnet ring coating, thus causing pressure bad between winding interlayer, primary and secondary winding or between winding and magnet ring and puncturing.
Due to electronic product small and microminiaturization, power panel (pcb board) is left for the also increasingly flattening and narrow and small of the installing space of mains transformer, while thus making small-sized or Mini-magnetic ring mains transformer profile installation dimension meet installing space, it is difficulty with pressure surface creep age distance and electric clearance that various countries' GB safety requires. Such as: GB19212.1-2003, GB19212.7-2006 require that creep age distance and electrical equipment gap width are 4.4 millimeters and 4.17 millimeters respectively, high pressure proof voltage (GB19212.1-2003 often occurs, GB19212.7-2006 required value: during primary 220V input, between primary and secondary, primary to the dielectric strength 3453V between magnetic core) the bad problem punctured. Additionally, from Such analysis, even if stop the required value of above-mentioned GB when design, but in the small-sized or concrete production process of Mini-magnetic ring mains transformer, when especially carrying out molten tin bath immersed solder and the power panel 240 DEG C welding of 420 DEG C, winding wire or the dielectric on magnet ring still have and are greatly likely to suffer nonlinear damage. Therefore, in concrete production, welding technological standards is very strict with requirement, especially the weld interval of 420 DEG C of melted immersed solder and working specification are required very harsh, while it is true, concrete production still there will be a large amount of bad product.
Based on the problems referred to above, the present invention designs the production method of a kind of simple and practical small-sized or Mini-magnetic ring mains transformer, to solve the technical barrier that puzzlement industry welding difficulty for many years is big, product fraction defective is high.
Summary of the invention
First technical problem that the invention solves the problems that is to provide a kind of magnet ring mains transformer manufacture method promoting safe distance, and the method step is simple, easy to operate, can be effectively increased creep age distance, thus immersed solder difficulty is greatly reduced, reduces product fraction defective.
Second technical problem that the invention solves the problems that is to provide a kind of simple in construction, realizes the magnet ring mains transformer that convenience, good insulation preformance and safe distance are big.
For solving above-mentioned first technical problem, the magnet ring mains transformer manufacture method of the promoted safe distance of the present invention, first magnet ring, base and winding wire are taken, wherein, insulating coating or sheathed insulation crust are covered in magnet ring surface, winding wire includes the primary winding coil and the secondary winding coil that are wrapped on magnet ring, and the bottom interval of base is installed many with stitch, and the method comprises the steps:
The lead-in wire tap of primary winding coil and secondary winding coil is all upwards drawn by step 1), reserved lead-in wire tap length=ring axial magnetic height+base thickness+operation surplus length, and wherein, operation surplus length takes 30-40mm;
Step 2) by sheathed for the magnet ring periphery winding coil the first sheath being made up of insulant;
The magnet ring of sheathed first sheath is positioned on base by step 3);
Each lead-in wire tap is bent downwards and walks around successively the outer surface of the first sheath and the side of base by step 4), and wherein, in concrete operations, bending part needs band certain radian, it is impossible to turn right angle, it is to avoid damage winding wire insulating barrier;
The end of each lead-in wire tap is respectively wound around the top ends of corresponding stitch by step 5), is cut by unnecessary the end of a thread of lead-in wire tap end, obtain treating immersed solder magnet ring mains transformer after kinking one circle;
Step 6) fills, by treating that immersed solder magnet ring mains transformer is put into straight down, the immersed solder groove that temperature is 380 DEG C of-440 DEG C of tin liquors, and keeps the bottom surface of base concordant with liquid level, takes out after the immersed solder 3-6 second;
Sheathed second sheath being made up of insulant in periphery of the magnet ring mains transformer that immersed solder is completed by step 7), exposes the stitch of bottom, and magnet ring mains transformer completes.
First sheath and the second sheath all adopt heat-shrink tube, heat-shrink tube is sheathed complete after all put in drying baker, adopt the temperature pyrocondensation of 90-120 DEG C. The length of the first sheath=+ 2 times of winding wire diameters of ring axial magnetic height+2 times magnet ring thickness �� 2mm; The length of the second sheath=+ 2 times of winding wire diameters of ring axial magnetic height+1 times magnet ring thickness+base thickness �� 2mm. Wherein, winding wire diameter refers to the diameter of winding wire, magnet ring thickness=(magnet ring external diameter-magnet ring internal diameter) �� 2.
In existing solder dip process, not adding the first protective-cover type, only allow immersed solder 3 seconds, otherwise winding wire is just burned, and causes and punctures, the very difficult assurance of manual operation. In the method for the present invention, by arranging the first sheath, it is equal to and Lm distance is greatly improved, the heat isolation of copper core in lead-in wire tap when making to weld, 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, lead-in wire tap is individually isolated in outside coil windings by the first sheath, also increases the length of surface-discharge distance Ls. Visible, the first sheath has heat insulation and insulation function concurrently, is added significantly to Ls+Lm safe distance. Thoroughly solve small-sized or when Mini-magnetic ring mains transformer manufactures and designs should small size, the contradiction that safe distance is sufficiently large again, improve small-sized or Mini-magnetic ring mains transformer security performance.
For solving second technical problem, the magnet ring mains transformer of the present invention includes base and is arranged on the magnet ring on base top, magnet ring is wound around primary coil and secondary coil, the bottom interval of base installs many stitch, its periphery being structurally characterized in that described magnet ring be coated with the lead-in wire tap of the first sheath, primary coil and secondary coil from the top of magnet ring draws and bend downward walk around the outer surface of the first sheath and the side of base successively after electrically connect with corresponding stitch.
Adopt said structure, by arranging the first sheath so that in the tap that goes between during welding, the heat of copper core cannot be delivered to coil windings, serves good heat-blocking action, reduces the technology difficulty of immersed solder; Meanwhile, lead-in wire tap is individually isolated in outside coil windings by the first sheath, adds the length of the lead-in wire tap insulating barrier allowing damage, namely adds safe distance. Visible, the first sheath has heat insulation and insulation function, the pressure bad problem punctured of coil thoroughly solved concurrently, improves the security performance of transformator.
The outer cover of described first sheath is provided with and the lead-in wire tap of primary and secondary coil and the border of base is all coated on the second interior sheath.Second sheath is used for being coated with whole transformator, improves whole transformator and the insulating properties of other element on pcb board, further increases safety.
Described first sheath and the second sheath are heat-shrink tube. Two sheaths all can use heat-shrink tube, utilizes the advantage that shrinkable tube structure is simple and easy to operate.
The length of described first sheath is more than the axial length of magnet ring, and the top of the first sheath and bottom are respectively turned inwards and form the first sheath annular turnover edge covering magnet ring top edge and bottom edge.
The length of described second sheath is more than ring axial magnetic length and base thickness sum, and the top of the second sheath and bottom are respectively turned inwards and form the second sheath annular turnover edge covering magnet ring top edge and base end face edge.
In said structure, the top of two sheaths and bottom are respectively provided with annular turnover edge, can increase interstructural insulation and heat-proof quality further so that the protective effect of sheath obtains and further expands.
The side opening of described base is provided with multiple through base top surface and bottom surface and for holding the wire casing of lead-in wire tap. Owing to the side of base is all walked around in each lead-in wire tap, in order to avoid interfering between adjacent taps, therefore wire casing is set. Wire casing plays spacing effect, and each wire casing holds the tap of a lead-in wire, it is to avoid the position skew of lead-in wire tap and mutual interference.
Visible, the magnet ring mains transformer of the present invention has simple in construction, realizes the advantage that convenience, good insulation preformance and safe distance are big.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the A portion structure for amplifying 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.
Detailed description of the invention
With reference to accompanying drawing, the present invention can promote the magnet ring mains transformer manufacture method of safe distance, first magnet ring 1, base 2 and winding wire are taken, insulating coating or sheathed insulation crust are covered in magnet ring 1 surface, winding wire includes the primary winding coil and the secondary winding coil that are wrapped on magnet ring, the bottom interval of base 2 is installed many with stitch 3, and the method comprises the steps:
The lead-in wire tap 5 of primary winding coil and secondary winding coil is all upwards drawn by step 1), reserved lead-in wire tap length=ring axial magnetic height+base thickness+operation surplus length, and operation surplus length takes 30-40mm;
Step 2) by sheathed for the magnet ring periphery winding coil the first sheath 4 being made up of insulant;
The magnet ring 1 of sheathed first sheath 4 is positioned on base 2 by step 3);
Each lead-in wire tap 5 is bent downwards and walks around successively the outer surface of the first sheath 4 and the side of base 3 by step 4);
The end of each lead-in wire tap 5 is respectively wound around the top ends of corresponding stitch 3 by step 5), is cut by unnecessary the end of a thread of lead-in wire tap 5 end, obtain treating immersed solder magnet ring mains transformer after kinking one circle;
Step 6) fills, by treating that immersed solder magnet ring mains transformer is put into straight down, the immersed solder groove that temperature is 380 DEG C of-440 DEG C of tin liquors, and keeps the bottom surface of base 3 concordant with liquid level, takes out after the immersed solder 3-6 second;
Sheathed second sheath 6 being made up of insulant in periphery of the magnet ring mains transformer that immersed solder is completed by step 7), exposes the stitch 3 of bottom, and magnet ring mains transformer completes.
Wherein, first sheath and the second sheath can adopt insulating tape, insulating paper etc. to have the material of insulated heat function, and preferred in the present invention, the first sheath 4 and the second sheath 6 all adopt heat-shrink tube, heat-shrink tube is sheathed complete after all put in drying baker, adopt the temperature pyrocondensation of 90-120 DEG C.
For the diameter of heat-shrink tube, choose according to pyrocondensation ratio, the length of the first sheath 4=+ 2 times of winding wire diameters of ring axial magnetic height+2 times magnet ring thickness �� 2mm. The length of the second sheath 6=+ 2 times of winding wire diameters of ring axial magnetic height+1 times magnet ring thickness+base thickness �� 2mm. The length of two sheaths is chosen very crucial, especially the first sheath 4, in coil windings except lead-in wire tap is coated on by its needs, therefore, that includes the allowable error of ring axial magnetic height, twice winding wire diameter, twice magnet ring thickness and �� 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 along 41 at magnet ring and bottom, thus winding wire and magnet ring body to bottom magnet ring and top are protected, increasing insulation and heat-proof quality further that the length of the first sheath 4 increases twice magnet ring thickness. Length for the second sheath 6, it includes ring axial magnetic height, 2 times of winding wire diameters, 1 times of magnet ring thickness, base thickness and �� 2mm allowable error, owing to the bottom of the second sheath need not form too big annular turnover edge, therefore it has only to 1 times of magnet ring thickness, edge is turned down for the annular bottom it, then obtains from the allowable error of 2mm.
In the method for the present invention, by arranging the first sheath, it is equal to and Lm distance is greatly improved, the heat isolation of copper core in lead-in wire tap when making to weld, 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, lead-in wire tap is individually isolated in outside coil windings by the first sheath, also increases the length of surface-discharge distance Ls. Visible, the first sheath has heat insulation and insulation function concurrently, is added significantly to Ls+Lm safe distance. Thoroughly solve small-sized or when Mini-magnetic ring mains transformer manufactures and designs should small size, the contradiction that safe distance is sufficiently large again, improve small-sized or Mini-magnetic ring mains transformer security performance.
With reference to accompanying drawing, the magnet ring mains transformer of the present invention includes base and is arranged on the magnet ring 1 on base top, magnet ring 1 is wound around primary coil and secondary coil, the bottom interval of base 2 installs many stitch 3, the periphery of magnet ring 1 be coated with the lead-in wire tap 5 of the first sheath 4, primary coil and secondary coil from the top of magnet ring 1 draws and bends downward walk around the outer surface of the first sheath 4 and the side of base 2 successively after electrically connect with corresponding stitch 3. Wherein, the side opening of base 2 is provided with multiple through base top surface and bottom surface and for holding the wire casing 7 of lead-in wire tap 5. Owing to the side of base 2 is all walked around in each lead-in wire tap 5, in order to avoid interfering between adjacent taps, therefore wire casing 7 is set. Wire casing 7 plays spacing effect, and each wire casing 7 holds the tap 5 of a lead-in wire, it is to avoid the position skew of lead-in wire tap and mutual interference.
In said structure, by arranging the first sheath 4 so that in the tap 5 that goes between during welding, the heat of copper core cannot be delivered to coil windings, serves good heat-blocking action, reduces the technology difficulty of immersed solder; Meanwhile, outside lead-in wire tap 5 is individually isolated in coil windings by the first sheath 4, adds the length of the lead-in wire tap insulating barrier allowing damage, namely add safe distance. Visible, the first sheath 4 has heat insulation and insulation function, the pressure bad problem punctured of coil thoroughly solved concurrently, improves the security performance of transformator.
With reference to accompanying drawing, the outer cover of the first sheath 4 is provided with and the lead-in wire tap 5 of primary and secondary coil and the border of base 2 is all coated on the second interior sheath 6. Second sheath 6 is used for being coated with whole transformator, improves whole transformator and the insulating properties of other element on pcb board, adopts the structure of duplex sheath, and progressive one improves the security performance of transformator. Wherein, the first sheath 4 and the second sheath 6 are heat-shrink tube, make use of the advantage that shrinkable tube structure is simple and easy to operate.
With reference to accompanying drawing, the length of the first sheath 4 is more than the axial length of magnet ring 1, and the top of the first sheath 4 and bottom are respectively turned inwards and form the first sheath annular turnover covering magnet ring 1 top edge and bottom edge along 41. The length of the second sheath 6 is more than magnet ring 1 axial length and base 2 thickness sum, and the top of the second sheath 6 and bottom are respectively turned inwards and form the second sheath annular turnover covering magnet ring 1 top edge and base 2 bottom edge along 61. Annular turnover is set along increasing interstructural insulation and heat-proof quality further so that the protective effect of sheath obtains and further expands.
In sum, the invention is not restricted to above-mentioned detailed description of the invention. Those skilled in the art, under the premise without departing from the spirit and scope of the present invention, can do some changes and modification. Protection scope of the present invention should be as the criterion with the claim of the present invention.
Claims (10)
1. the magnet ring mains transformer manufacture method that can promote safe distance, take magnet ring (1), base (2) and winding wire, insulating coating or sheathed insulation crust are covered in magnet ring (1) surface, winding wire includes the primary winding coil and the secondary winding coil that are wrapped on magnet ring, the bottom interval of base (2) is installed many with stitch (3), it is characterized in that the method comprises the steps:
The lead-in wire tap (5) of primary winding coil and secondary winding coil is all upwards drawn by step 1), reserved lead-in wire tap length=ring axial magnetic height+base thickness+operation surplus length;
Step 2) by sheathed for the magnet ring periphery winding coil the first sheath (4) being made up of insulant;
The magnet ring (1) of sheathed first sheath (4) is positioned on base (2) by step 3);
Step 4) is by the bending downwards of each lead-in wire tap (5) and walks around the outer surface of the first sheath (4) and the side of base (3) successively;
The end of each lead-in wire tap (5) is respectively wound around the top ends of corresponding stitch (3) by step 5), is cut by unnecessary the end of a thread of lead-in wire tap (5) end, obtain treating immersed solder magnet ring mains transformer after kinking one circle;
Step 6) fills, by treating that immersed solder magnet ring mains transformer is put into straight down, the immersed solder groove that temperature is 380 DEG C of-440 DEG C of tin liquors, and keeps the bottom surface of base (3) concordant with liquid level, takes out after the immersed solder 3-6 second;
Sheathed the second sheath (6) being made up of insulant in the periphery of the magnet ring mains transformer that immersed solder is completed by step 7), exposes the stitch (3) of bottom, and magnet ring mains transformer completes.
2. can promoting the magnet ring mains transformer manufacture method of safe distance as claimed in claim 1, the operation surplus length that it is characterized in that in step 1) takes 30-40mm.
3. can promote the magnet ring mains transformer manufacture method of safe distance as claimed in claim 1, it is characterized in that described first sheath (4) and the second sheath (6) all adopt heat-shrink tube, heat-shrink tube is sheathed complete after all put in drying baker, adopt the temperature pyrocondensation of 90-120 DEG C.
4. can promote the magnet ring mains transformer manufacture method of safe distance as claimed in claim 3, it is characterized in that the length of described first sheath (4)=+ 2 times of winding wire diameters of ring axial magnetic height+2 times magnet ring thickness �� 2mm; The length of the second sheath (6)=+ 2 times of winding wire diameters of ring axial magnetic height+1 times magnet ring thickness+base thickness �� 2mm.
5. a magnet ring mains transformer, including base and the magnet ring (1) being arranged on base top, magnet ring (1) is upper is wound around primary coil and secondary coil, the bottom interval of base (2) installs many stitch (3), it is characterized in that the periphery of described magnet ring (1) is coated with the first sheath (4), the lead-in wire tap (5) of primary coil and secondary coil is drawn from the top of magnet ring (1) and is bent after walking around downwards the outer surface of the first sheath (4) and the side of base (2) successively and electrically connects with corresponding stitch (3).
6. magnet ring mains transformer as claimed in claim 5, is characterized in that the outer cover of described first sheath (4) is provided with and the lead-in wire tap (5) of primary and secondary coil and the border of base (2) is all coated on interior the second sheath (6).
7. magnet ring mains transformer as claimed in claim 5, is characterized in that described first sheath (4) and the second sheath (6) are heat-shrink tube.
8. magnet ring mains transformer as claimed in claim 5, it is characterized in that the length of described first sheath (4) axial length more than magnet ring (1), the top of the first sheath (4) and bottom are respectively turned inwards formation and cover the first sheath annular turnover edge (41) of magnet ring (1) top edge and bottom edge.
9. magnet ring mains transformer as claimed in claim 6, it is characterized in that the length of described second sheath (6) is more than magnet ring (1) axial length and base (2) thickness sum, the top of the second sheath (6) and bottom are respectively turned inwards formation and cover the second sheath annular turnover edge (61) of magnet ring (1) top edge and base (2) bottom edge.
10. the magnet ring mains transformer as according to any one of claim 5-9, is characterized in that the side opening of described base (2) is provided with multiple through base top surface and bottom surface and for holding the wire casing (7) of lead-in wire tap (5).
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| CN201610242682.6A CN105655122B (en) | 2016-04-19 | 2016-04-19 | A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance |
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| CN201610242682.6A CN105655122B (en) | 2016-04-19 | 2016-04-19 | A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance |
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| CN105655122B CN105655122B (en) | 2017-06-16 |
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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 |
| CN108053989A (en) * | 2017-11-25 | 2018-05-18 | 王强 | It is a kind of can patch type I-shaped inducer production method |
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| 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 |
| CN108053989A (en) * | 2017-11-25 | 2018-05-18 | 王强 | It is a kind of can patch type I-shaped inducer production method |
| 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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