CN203366970U - Transformer and power supply - Google Patents
Transformer and power supply Download PDFInfo
- Publication number
- CN203366970U CN203366970U CN 201320416311 CN201320416311U CN203366970U CN 203366970 U CN203366970 U CN 203366970U CN 201320416311 CN201320416311 CN 201320416311 CN 201320416311 U CN201320416311 U CN 201320416311U CN 203366970 U CN203366970 U CN 203366970U
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- limit winding
- transformer
- planar coil
- hole
- winding
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Abstract
The utility model discloses a transformer and a power supply. The transformer comprises a first primary side winding, a secondary side winding and a second primary side winding, wherein the first primary side winding and the second primary side winding comprise planar coils wound with insulated wires respectively, the secondary side winding is located between the first primary side winding and the second primary side winding, a through hole is formed in the secondary side winding, and the tail end of the planar coil of the first primary side winding penetrates the through hole to be connected with the starting end of the planar coil of the second primary side winding. By arranging the through hole, the tail end of the planar coil of the first primary side winding penetrates the through hole to be connected with the starting end of the planar coil of the second primary side winding, and accordingly the thickness of the transformer is decreased.
Description
Technical field
The utility model relates to supply unit, relates in particular to a kind of transformer and the power supply that includes this transformer.
Background technology
Along with improving constantly of TV tech, TV is more and more to frivolous future development, the superthin structure of TV has become a kind of trend, and a power supply bottleneck of TV ultrathin design often in TV, the transformer in power supply is a bottleneck of power supply ultrathin design especially.
Transformer common in existing television set is referring to figs. 1 through shown in Fig. 3.Transformer specifically comprises: magnetic core 1, the first first limit winding 2, inferior limit winding 3 and second be limit winding 4 just.Wherein, first just limit winding 1 and second just limit winding 2 take magnetic core 1 by insulated wire and be entwined as the center of circle, inferior limit winding 3 is for being printed on PCB the coil that covers copper cash formation, wherein, PCB is multi-layer PCB.PCB is provided with through hole and passes for magnetic core 1, and the first first limit winding 2 and the second first limit winding 4 lay respectively at the both sides of PCB, and the centre tap of the first first limit winding 2 and the second first limit winding 4 is in the magnetic core outside and is connected.Particularly, the first first limit winding 1 starts to be wound to terminal E1 from starting point A, and the second first limit winding 1 starts to be wound to terminal E2 from starting point B, and terminal E2 is connected with terminal E1.Cause the first first limit winding one end and the second just other end of limit winding is connected in the magnetic core outside, therefore the first just existence that goes out line segment FE1 of limit winding 2 has increased the whole height of the first first limit winding, equally, the inlet wire section E2G of the second first limit winding 4 has increased the height of the second first limit winding.The method for winding of prior art makes the thickness of the first first limit winding 2 and the second first limit winding 4 increase by one times, thereby is unfavorable for realizing the setting of transformer superthin structure, correspondingly is difficult to meet power supply superthin structure design requirement.
The utility model content
Main purpose of the present utility model is to provide a kind of transformer and power supply, is intended to reduce the thickness of existing transformer.
In order to achieve the above object, the utility model proposes a kind of transformer, comprise: the first first limit winding, inferior limit winding and second be the limit winding just, the described first first limit winding and described second just limit winding includes the planar coil that insulated wire is wound around, described limit winding is between the described first first limit winding and the second first limit winding, be provided with through hole on described limit winding, the end of the planar coil of the described first first limit winding is connected with the initiating terminal of the planar coil of the described second first limit winding through described through hole.
Preferably, described limit winding comprise being printed on and cover the copper cash pitch of the laps on PCB, described first just the limit winding be attached at the side of described PCB, described second just the limit winding be attached at the opposite side of described PCB, described through hole is positioned on described PCB.
Preferably, described transformer also comprises magnetic core, and described PCB is provided with installing hole, and described magnetic core passes the just center of the planar coil of limit winding of the center of the planar coil of the described first first limit winding, described installing hole and described second successively.
Preferably, the diameter of stating through hole is greater than the diameter of described insulated wire.
Preferably, the described copper cash pitch of the laps shape twist that covers.
Preferably, form described first just the limit winding planar coil and form the described second first equal shape twist of planar coil of limit winding.
The utility model further also proposes a kind of power supply, comprise a kind of transformer, described transformer comprises: the first first limit winding, inferior limit winding and second be the limit winding just, the described first first limit winding and described second just limit winding includes the planar coil that insulated wire is wound around, described limit winding is between the described first first limit winding and the second first limit winding, be provided with through hole on described limit winding, the end of the planar coil of the described first first limit winding is connected with the initiating terminal of the planar coil of the described second first limit winding through described through hole.
The utility model proposes transformer, by on the winding of inferior limit, being provided with through hole, the end of the planar coil of the first first limit winding is connected with the initiating terminal of the planar coil of the second first limit winding through through hole, thereby just the insulated wire of the planar coil end of limit winding need be through whole planar coil to have avoided first, be connected with the insulated wire of the planar coil initiating terminal of the second first limit winding in the planar coil outer ring, and then reduced the thickness of this transformer.Particularly, the first first limit winding, with respect to the of the prior art first first limit winding, can reduce the diameter thickness of an insulated wire.In like manner, the second first limit winding, with respect to the of the prior art second first limit winding, can reduce the diameter thickness of an insulated wire.Therefore the transformer that the present embodiment proposes can reduce the diameter thickness of two insulated wires on the basis of the thickness of existing depressor.In addition, simple in structure, the easy realization of this transformer, can simplify production process simultaneously.Adopt this transformer performance reliable, can test by safety through check.
The accompanying drawing explanation
The structural representation that Fig. 1 is transformer in prior art;
The sectional structure schematic diagram that Fig. 2 is the transformer shown in Fig. 1;
The part-structure decomposing schematic representation that Fig. 3 is the transformer shown in Fig. 1;
The structural representation that Fig. 4 is the utility model transformer preferred embodiment;
The part-structure decomposing schematic representation that Fig. 5 is the utility model transformer;
The sectional structure schematic diagram that Fig. 6 is the utility model transformer.
The realization of the utility model purpose, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with drawings and the specific embodiments, with regard to the technical solution of the utility model, be described further.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 4 to Fig. 6, the structural representation that Fig. 4 is the utility model transformer preferred embodiment; The part-structure decomposing schematic representation that Fig. 5 is the utility model transformer; The sectional structure schematic diagram that Fig. 6 is the utility model transformer.
In this preferred embodiment, transformer comprises: the first first limit winding 10, inferior limit winding 30 and second be limit winding 20 just, the first first limit winding 10 and second just limit winding 20 includes the planar coil that insulated wire is wound around, inferior limit winding 30 is between the first first limit winding 10 and the second first limit winding 20, the end that is provided with the planar coil of through hole 31, the first first limit windings 10 on inferior limit winding 30 is connected with the initiating terminal of the planar coil of the second first limit winding 20 through through hole 31.
Particularly, the first first limit winding 10 and the second first limit winding 20 form the former limit winding of transformers.The first first limit winding 10, for the planar coil that insulated wire is wound around, starts to be wound to clockwise terminal e1 by insulated wire from starting point a particularly, the end that terminal e1 is the first planar coil that just limit winding 10 forms.Then, the insulated wire of terminal e1, through through hole 31, be take e2 after starting point is wound in planar coil clockwise, until terminal b.Be that e2 is the second first initiating terminal of the planar coil of limit winding 20, b is the second first end of the planar coil of limit winding 20.Particularly, in the present embodiment, the insulated wire that forms the first first limit winding 10 and the second first limit winding 20 is the double insulation line, to guarantee good insulation effect.
The transformer that the present embodiment proposes, by on inferior limit winding 30, being provided with through hole 31, the end of the planar coil of the first first limit winding 10 is connected with the initiating terminal of the planar coil of the second first limit winding 20 through through hole 31, thereby just the insulated wire of the planar coil end of limit winding 10 need be through whole planar coil to have avoided first, be connected with the insulated wire of the planar coil initiating terminal of the second first limit winding 20 in the planar coil outer ring, and then reduced the thickness of this transformer.Particularly, the first first limit winding 10, with respect to the of the prior art first first limit winding 10, can reduce the diameter thickness of an insulated wire.In like manner, the second first limit winding 20, with respect to the of the prior art second first limit winding 20, can reduce the diameter thickness of an insulated wire.Therefore the transformer that the present embodiment proposes can reduce the diameter thickness of two insulated wires on the basis of the thickness of existing depressor.In addition, simple in structure, the easy realization of this transformer, can simplify production process simultaneously.Adopt this transformer performance reliable, can test by safety through check.
Particularly, inferior limit winding 30 comprises being printed on and covers the copper cash pitch of the laps on PCB, first just limit winding 10 be attached at the side of PCB, second just limit winding 20 be attached at the opposite side of PCB, through hole 31 is positioned on PCB.In addition, it should be noted that, the insulated wire that passes the upper through hole 31 of PCB forms time limit winding 30 without any electrical connection with the copper cash that covers by PCB.
The planar coil that forms the first first limit winding 10 is attached to the side of PCB, the planar coil that forms the second first limit winding 20 is attached at the opposite side of PCB, the first first limit winding 10 and the second first limit winding 20 all fit tightly with PCB, thereby can further reduce the thickness of this transformer.
Particularly, this transformer also comprises magnetic core 40, and PCB is provided with installing hole 32, and magnetic core is successively through the first first first center of the planar coil of limit winding 20 in center, installing hole 32 and second of the planar coil of limit winding 10.
Further, the diameter of through hole 31 is greater than the diameter of insulated wire.
Be arranged to be greater than the diameter of insulated wire by the diameter by through hole 31, thereby be conducive to insulated wire through through hole 31, and then be conducive to manufacturing of this transformer.
Further, cover copper cash pitch of the laps shape twist, thereby improve the space availability ratio of covering copper cash on PCB.
Further, form first just limit winding 10 planar coil and form the second first equal shape twist of planar coil of limit winding 20.
Spiral-shaped by planar coil is arranged to, can save the space that insulated wire is wound around, improve space availability ratio.
In the embodiment of other distortion, according to the actual design needs, form first just limit winding 10 and second just the planar coil of limit winding 20 can be rounded, ellipse or rectangle setting.
The utility model further also proposes a kind of power supply.
In the present embodiment, power supply comprises a kind of transformer, and the concrete structure of this transformer, with reference to above-described embodiment, does not repeat them here.
The power supply that the present embodiment proposes, by on the inferior limit winding at transformer, being provided with through hole, the end of the planar coil of the first first limit winding is connected with the initiating terminal of the planar coil of the second first limit winding through through hole, thereby just the insulated wire of the planar coil end of limit winding need be through whole planar coil to have avoided first, be connected with the insulated wire of the planar coil initiating terminal of the second first limit winding in the planar coil outer ring, and then reduced the thickness of this transformer.Particularly, the first first limit winding, with respect to the of the prior art first first limit winding, can reduce the diameter thickness of an insulated wire.In like manner, the second first limit winding, with respect to the of the prior art second first limit winding, can reduce the diameter thickness of an insulated wire.Therefore the transformer that the present embodiment proposes can reduce the diameter thickness of two insulated wires on the basis of the thickness of existing depressor.In addition, simple in structure, the easy realization of this transformer, can simplify production process simultaneously.Adopt this transformer performance reliable, can test by safety through check.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (7)
1. a transformer, comprise: the first first limit winding, inferior limit winding and second be the limit winding just, the described first first limit winding and described second just limit winding includes the planar coil that insulated wire is wound around, described limit winding is between the described first first limit winding and the second first limit winding, it is characterized in that, be provided with through hole on described limit winding, the end of the planar coil of the described first first limit winding is connected with the initiating terminal of the planar coil of the described second first limit winding through described through hole.
2. transformer as claimed in claim 1, it is characterized in that, described limit winding comprise being printed on and cover the copper cash pitch of the laps on PCB, described first just the limit winding be attached at the side of described PCB, the described second first limit winding is attached at the opposite side of described PCB, and described through hole is positioned on described PCB.
3. transformer as claimed in claim 1, it is characterized in that, also comprise magnetic core, described PCB is provided with installing hole, and described magnetic core passes the just center of the planar coil of limit winding of the center of the planar coil of the described first first limit winding, described installing hole and described second successively.
4. transformer as claimed in claim 1, is characterized in that, the diameter of described through hole is greater than the diameter of described insulated wire.
5. transformer as claimed in claim 2, is characterized in that, the described copper cash pitch of the laps shape twist that covers.
6. transformer as described as any one in claim 1 to 5, is characterized in that, form described first just the limit winding planar coil and form the described second first equal shape twist of planar coil of limit winding.
7. a power supply, is characterized in that, comprises transformer as described as any one in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320416311 CN203366970U (en) | 2013-07-12 | 2013-07-12 | Transformer and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320416311 CN203366970U (en) | 2013-07-12 | 2013-07-12 | Transformer and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203366970U true CN203366970U (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320416311 Expired - Lifetime CN203366970U (en) | 2013-07-12 | 2013-07-12 | Transformer and power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203366970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304296A (en) * | 2015-11-04 | 2016-02-03 | 中国船舶重工集团公司第七二三研究所 | Planar transformer of printed circuit board |
| CN106332447A (en) * | 2016-08-31 | 2017-01-11 | 电子科技大学 | Inductor structure used for printed circuit board embedding technology and manufacturing method thereof |
-
2013
- 2013-07-12 CN CN 201320416311 patent/CN203366970U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304296A (en) * | 2015-11-04 | 2016-02-03 | 中国船舶重工集团公司第七二三研究所 | Planar transformer of printed circuit board |
| CN106332447A (en) * | 2016-08-31 | 2017-01-11 | 电子科技大学 | Inductor structure used for printed circuit board embedding technology and manufacturing method thereof |
| CN106332447B (en) * | 2016-08-31 | 2018-09-21 | 电子科技大学 | A kind of induction structure and preparation method thereof for printed circuit board potting technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
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| CX01 | Expiry of patent term |