CN204204604U - A kind of transformer - Google Patents
A kind of transformer Download PDFInfo
- Publication number
- CN204204604U CN204204604U CN201420726838.4U CN201420726838U CN204204604U CN 204204604 U CN204204604 U CN 204204604U CN 201420726838 U CN201420726838 U CN 201420726838U CN 204204604 U CN204204604 U CN 204204604U
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- transformer
- winding
- coil
- shielding part
- primary coil
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Abstract
The utility model relates to a kind of transformer, comprise: transformer framework, primary coil and secondary coil, described transformer framework comprises elementary winding slot and secondary rolling thread groove, described primary coil is wound in the elementary winding slot of described transformer framework, described secondary coil is wound in the secondary rolling thread groove of described transformer framework, primary coil comprises main winding and auxiliary winding, is provided with insulating barrier between main winding and auxiliary winding; Described transformer framework also comprises screening arrangement, and described screening arrangement is arranged between elementary winding slot and secondary rolling thread groove.The transformer that the utility model provides, its product design is reasonable, and transformer coil winding process is simple, and volume is little, and production cost is low, effectively can shield electricity and magnetic, reduce equipment room and interfere with each other.
Description
Technical field
The utility model relates to a kind of transformer, is specifically related to a kind of transformer being provided with screening arrangement, belongs to transformer technology field.
Background technology
Transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, and main member is primary coil, secondary coil and iron core (magnetic core).In electric equipment and radio-circuit, be commonly used for buck/boost, matched impedance, Secure isolation etc.The function of transformer mainly contains voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer), autotransformer, high-tension transformer (dry type and oil immersed type) etc.
Under some particular job environment, be equipped with numerous electronics, electric equipment, so electromagnetic environment is very severe, the mutual interference between equipment is quite serious, and this not only affects the functional reliability of equipment, also affects giving full play to of its function.Common transformer does not adopt the quarantine measures such as electric screen and magnetic screen, although can power by the power consumption equipment not high to some EMC Requirements, but because power supply product circuit structure becomes increasingly complex, multiple electronic component forms a complicated circuit jointly, usually leakage flux is there is in application process, when leakage field will produce electromagnetic interference to other components and parts, having the greatest impact particularly to low-power amplifier through peripheral circuit.Therefore must consider EMI and EMC in the design, thus ensure that the operation of each part is unaffected, and transformer is as the core component of power supply, performing electromagnetic shielding is important considerations.In prior art, be subject to extraneous electromagnetic interference in order to avoid transformer and reduce electromagnetic pollution, all can there is a winding in the design of transformer, be designed to shield winding, be placed between armature winding and secondary winding, but increase shield winding in winding inside, line pack arrangement can be caused to increase, and winding can be a lot, and volume can increase, complex process, increases the difficulty of procedure for producing.Therefore, researcher considers screening arrangement to arrange separately, thus reduces the difficulty of producing.Chinese patent CN201020202618, disclose a kind of transformer with screening arrangement, comprise transformer body, the screening can be covered on transformer body, the coil being arranged on transformer body inside, the elementary terminal box being arranged at transformer body side, the connector cover connected with elementary terminal box and be arranged at the secondary terminal box of transformer body opposite side, wherein between elementary terminal box and connector cover, be provided with screening arrangement.Weak point is, product structure is complicated, and volume is larger.Chinese patent CN201220225220, disclose a kind of transformer being provided with mask tape, it comprises transformer body, and transformer body is provided with coil windings, is provided with mask tape, the coated coil windings in mask tape, and tension is arranged at the outer surface of transformer body.Weak point is, the second end winding transformer body of described mask tape one week, and the first end of mask tape is connected by argon arc welding spot welding with the second end of mask tape, and complex manufacturing, cost is high.
Utility model content
For prior art above shortcomings, the purpose of this utility model is to propose a kind of transformer being provided with shielding construction, and its product design is reasonable, transformer coil winding process is simple, volume is little, and production cost is low, can effectively shield electricity with magnetic, reduce equipment room and interfere with each other.
The technical scheme that the utility model adopts is: a kind of transformer, comprise: transformer framework, primary coil and secondary coil, described transformer framework comprises elementary winding slot and secondary rolling thread groove, described primary coil is wound in the elementary winding slot of described transformer framework, described secondary coil is wound in the secondary rolling thread groove of described transformer framework, primary coil comprises main winding and auxiliary winding, insulating barrier is provided with between main winding and auxiliary winding, described transformer framework also comprises screening arrangement, described screening arrangement is arranged between elementary winding slot and secondary rolling thread groove.
As further improvement of the utility model, described screening arrangement is made up of draw-in groove and shielding part, and described shielding part is located in draw-in groove.
As further improvement of the utility model, described shielding part is PCB copper-clad plate.
As further improvement of the utility model, described shielding part is connected with described main winding one end.Like this, shielding part and main winding one end can be made to be in same current potential, make shielding part effective grounding, form a closed loop, the shield effectiveness of shielding part is better.
As further improvement of the utility model, described insulating barrier is insulating tape or insulation board.
As further improvement of the utility model, described main winding is wound in outside insulating barrier, and described auxiliary winding technique is inside insulating barrier.Because auxiliary winding is generally used to extract signal or provide low-tension supply for components and parts, more responsive to electromagnetic signal, be easily disturbed, thus auxiliary winding is positioned at main winding inside and equals to have added one deck shielding, and anti-jamming effectiveness is better.
As further improvement of the utility model, described main winding is 95 ~ 105 circles, and described auxiliary winding is 10 ~ 20 circles.
As further improvement of the utility model, described secondary coil comprise same layer close around two windings, affiliated two windings are respectively 15 ~ 25 circles.
Due to the utilization of technique scheme, the utility model compared with prior art, there is following beneficial effect: the skeleton of transformer is provided with screening arrangement, be placed between elementary winding slot and secondary rolling thread groove, change traditional design increasing shield winding in winding inside, skeleton structure after improvement reduces the area shared by transformer framework, the volume of whole transformer is diminished relatively, transformer coil adopts both sides to separate lap wound winding displacement mode simultaneously, decrease the induction that intercouples, winding process is simple, reduce difficulty and the production cost of procedure for producing, improve task performance and product quality, screening arrangement is made up of draw-in groove and shielding part, and shielding part is located in draw-in groove, and shielding part uses the good copper-clad plate of shield effectiveness, not only easy to install, effectively can shield the electromagnetic interference in the leakage flux of isolating transformer Ontology learning and transformer, shielding part is connected with main winding one end, makes shielding part and main winding one end be in same current potential, can make shielding part effective grounding, and form a closed loop, the shield effectiveness of shielding part is better, screening arrangement adds the creepage distance between primary coil and secondary coil, effectively improves the fail safe of transformer, the primary coil of transformer comprises main winding and auxiliary winding, like this can the triple-frequency harmonics of eliminating transformer, and provides voltage source and the signal of tranformer protection, be provided with insulating barrier between main winding and auxiliary winding, can isolate main winding and auxiliary winding, prevent the two short circuit, secondary coil comprise same layer close around two windings, can output be strengthened, reduce the discrete noise between coil, save the coiling time simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, specific embodiments of the present utility model is elaborated:
Fig. 1 is the transformer device structure schematic diagram that the utility model provides;
Fig. 2 is the transformer circuit figure that the utility model provides;
Fig. 3 is the transformer framework stereogram that the utility model provides.
In figure: 1 is primary coil; 2 is secondary coil; 3 is insulating barrier; 4 is shielding part; 5 is elementary winding slot; 6 is secondary rolling thread groove; 7 is transformer lead pin; 8 is screening arrangement; 9 is draw-in groove; 10 is main winding; 11 is auxiliary winding.
Specific embodiments
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not by the restriction of following public specific embodiment.
Concrete, as shown in figs. 1 and 3, for a kind of transformer that the utility model embodiment provides, comprise transformer framework, primary coil 1 and secondary coil 2, described transformer framework comprises elementary winding slot 5 and secondary rolling thread groove 6, described primary coil 1 is wound in the elementary winding slot 5 of described transformer framework, described secondary coil 2 is wound in the secondary rolling thread groove 6 of described transformer framework, primary coil 1 comprises main winding 10 and auxiliary winding 11, like this can the triple-frequency harmonics of eliminating transformer, and voltage source and the signal of tranformer protection are provided; Insulating barrier 3 is provided with between main winding 10 and auxiliary winding 11, main winding 10 is wound in outside insulating barrier 3, auxiliary winding 11 is wound in inside insulating barrier 3, insulating barrier 3 is insulating tape or insulation board, mainly use insulating tape in the present embodiment, insulating tape can isolate main winding 10 and auxiliary winding 11, prevents the two short circuit.
Transformer framework also comprises screening arrangement 8, be arranged between elementary winding slot 5 and secondary rolling thread groove 6, screening arrangement 8 is made up of draw-in groove 9 and shielding part 4, and described shielding part 4 is located in draw-in groove 9, is connected with described main winding 10 one end, shielding part and main winding one end is made to be in same current potential, can make shielding part effective grounding, form a closed loop, the shield effectiveness of shielding part is better, as shown in Figure 2, shielding part 4 is connected in PIN needle 4 in the present embodiment.Shielding part 4 and draw-in groove 9 matching form close, and shielding part 4 is back-shaped plug-in unit, and the shape in draw-in groove 9 inner vertical cross section is the U-shaped identical with back-shaped shielding part 4 length and width, magnetic core from the parallel loading in transformer framework both sides, through the intermediate throughholes part of back-shaped shielding part 4.
According to principle of electromagnetic shield-ing, namely electromagnetic shielding utilizes shielding material to intercept or decay conductively-closed region and extraneous electromagnetic energy travels.Shielding part 4 should be metal material, such as adopts the metallic plates such as copper coin, iron plate, aluminium sheet, more satisfactory employing PCB copper-clad plate, result of use is better, copper softer, and cutting processing is convenient, material source is relatively more extensive, also relatively more cheap, is convenient to large-scale processing and produces.When transformer is assembled, need shielding part 4 to be inserted in the draw-in groove 9 of transformer framework, screening arrangement 8 has cut off the path of stray capacitance between primary coil 1 and secondary coil 2, allows it form electric capacity all over the ground, shield effectiveness is good, can effectively reduce the electromagnetic interference between coil.
As shown in Figures 2 and 3, transformer framework also comprises the elementary stitch of row and be connected to bottom transformer framework and arranges secondary stitch, and a described elementary stitch of row and the secondary stitch of a row are parallel to each other, and elementary stitch and secondary stitch are respectively four.Specifically for EE16 and EE19 type skeleton, elementary stitch and secondary stitch are at a distance of 13.9mm or 15mm, and two row's stitch are spaced, and spacing is 4 or 6mm.
The production procedure of transformer is: around side line (i.e. primary coil) → around secondary side line (i.e. secondary coil) → trimming thread ends → scolding tin → assembling magnetic core → installation shielding part → fixed magnetic core → test → impregnation baking → visual examination → testing package.
Primary coil 1 main winding is 95 ~ 105 circles, and auxiliary winding is 10 ~ 20 circles; Secondary coil 2 comprise same layer close around two windings, two windings are respectively 15 ~ 25 circles.The preferred plan that uses for the present embodiment of winding structure table below, during coiling, primary coil 1 and secondary coil 2 adopt both sides to separate lap wound winding displacement mode, PIN1-4 forward coiling inwardly when primary coil (N1 and N2), PIN5-8 forward coiling inwardly when secondary coil (N3 and N4).Primary coil 1 main winding is 99 circles, and auxiliary winding is 10 circles, and two windings of secondary coil 2 are respectively 17 circles, need two-wire parallel and around, coiling or intersection can not be separated.
After magnetic core assembling, before adhesive tape is fixing, first use the tinned wire of 0.2mm, knot is to PIN3, then enclose around 1.5 around primary coil, afterwards lead-in wire knot is twined 1.5 ~ 2 circles to PCB solder joint, then by pcb board solder joint together with wire bonds, the last magnetic core fixation adhesive tape 2TS wrapping 4.5mm again, will closely be intertwined between tinned wird and magnetic core.
Finally should be noted that; the foregoing is only the preferred embodiment of this utility model; not in order to limit the utility model, all any simple modification, equivalent variations and remodeling done within spirit of the present utility model and principle, still belongs to the protection range of technical solutions of the utility model.
Claims (8)
1. a transformer, comprise: transformer framework, primary coil (1) and secondary coil (2), described transformer framework comprises elementary winding slot (5) and secondary rolling thread groove (6), described primary coil (1) is wound in the elementary winding slot (5) of described transformer framework, described secondary coil (2) is wound in the secondary rolling thread groove (6) of described transformer framework, it is characterized in that, primary coil (1) comprises main winding (10) and auxiliary winding (11), insulating barrier (3) is provided with between main winding (10) and auxiliary winding (11), described transformer framework also comprises screening arrangement (8), described screening arrangement (8) is arranged between elementary winding slot (5) and secondary rolling thread groove (6).
2. transformer as claimed in claim 1, it is characterized in that, described screening arrangement (8) is made up of draw-in groove (9) and shielding part (4), and described shielding part (4) is located in draw-in groove (9).
3. transformer as claimed in claim 2, it is characterized in that, described shielding part (4) is PCB copper-clad plate.
4. transformer as claimed in claim 2 or claim 3, it is characterized in that, described shielding part (4) is connected with described main winding (10) one end.
5. the transformer according to any one of claim 1-3, is characterized in that, described insulating barrier (3) is insulating tape or insulation board.
6. the transformer according to any one of claim 1-3, is characterized in that, described main winding (10) is wound in insulating barrier (3) outside, and described auxiliary winding (11) is wound in insulating barrier (3) inner side.
7. transformer as claimed in claim 6, it is characterized in that, described main winding (10) is 95 ~ 105 circles, and described auxiliary winding (11) is 10 ~ 20 circles.
8. the transformer as described in claim 1 or 7, is characterized in that: described secondary coil (2) comprise same layer close around two windings, described two windings are respectively 15 ~ 25 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726838.4U CN204204604U (en) | 2014-11-27 | 2014-11-27 | A kind of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726838.4U CN204204604U (en) | 2014-11-27 | 2014-11-27 | A kind of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204604U true CN204204604U (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420726838.4U Expired - Fee Related CN204204604U (en) | 2014-11-27 | 2014-11-27 | A kind of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377012A (en) * | 2014-11-27 | 2015-02-25 | 广安鑫宇电子有限公司 | Transformer |
-
2014
- 2014-11-27 CN CN201420726838.4U patent/CN204204604U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377012A (en) * | 2014-11-27 | 2015-02-25 | 广安鑫宇电子有限公司 | Transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Ling Chuanbao rock Electronic Science and Technology Co., Ltd. Assignor: GUANG'AN XINYV ELECTRONIC CO., LTD. Contract record no.: 2015510000047 Denomination of utility model: Making process of alloy for magnetic core of transformer Granted publication date: 20150311 License type: Exclusive License Record date: 20150522 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20191127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |