CN205487700U - Transformer and electronic equipment - Google Patents
Transformer and electronic equipment Download PDFInfo
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- CN205487700U CN205487700U CN201620148281.XU CN201620148281U CN205487700U CN 205487700 U CN205487700 U CN 205487700U CN 201620148281 U CN201620148281 U CN 201620148281U CN 205487700 U CN205487700 U CN 205487700U
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Abstract
The utility model relates to a transformer and electronic equipment relates to the electronic equipment field, and the technical problem of solution reduces the common mode interference that the transformer produced to electronic equipment. The technical scheme who mainly takes does: the iron core, the coil, including a primary, the 2nd primary and secondary coil, the shielding layer, including first shielding layer and secondary shielding layer, a primary, first shielding layer, secondary coil, secondary shielding layer and the 2nd primary stack gradually on the heel piece, the shielding layer is connected with the primary earthing terminal. Produce a parasitic capacitance between primary and the shielding layer, the shielding layer forms a return circuit elementarily with the transformer, and the elementary produced common mode interference of transformer can pass through parasitic capacitance and consume in the return circuit, and it is secondary can not to be coupled to the transformer to the common mode interference that the transformer produced has been reduced to electronic equipment.
Description
Technical field
This utility model relates to electronic device field, particularly relates to a kind of transformator and electronic equipment.
Background technology
The power supply adaptor of the electronic equipments such as notebook computer is in order to improve portable degree, and employing useless is traditional
Vertical transformer, but use small volume flat-plate transformer, therefore electronic equipment power supply fit
Orchestration thinner thickness, the primary and secondary coil of flat-plate transformer uses the structure of multilamellar intersection coiling, to carry
The efficiency of high transformer.
But, the noise jamming that power supply adaptor so can be caused external is relatively big, the noise jamming of generation
Equipment impacts the most to external world.Such as, the noise jamming that power supply adaptor produces can be to touch screen
Work impact.Common phenomenon is exactly that touch screen is uncontrolled, and mouse daps.Power adaptation
Transformator in device is the major sources of this interference, due to operating frequency and the power supply of touch screen
Switching frequency is called common mode disturbances in same scope, the most this interference.
Utility model content
Main purpose of the present utility model is, it is provided that the transformator of a kind of new structure and electronic equipment,
Technical problem to be solved reduces the common mode disturbances that electronic equipment is produced by transformator, thus suitableeer
In practicality.
The purpose of this utility model and solve it and technical problem is that and realize by the following technical solutions.
On the one hand, according to a kind of transformator that the utility model proposes, comprising:
Iron core, including iron core cover plate and heel piece；
Coil, including primary coil and secondary coil, described primary coil include the first primary coil,
Second primary coil；
Screen layer, described screen layer includes the first screen layer and secondary shielding layer, described first screen layer
Be provided with the headspace penetrated for the magnetic line of force on described secondary shielding layer；
Described first primary coil, described first screen layer, described secondary coil, described secondary shielding
Layer and described second primary coil are sequentially laminated on described heel piece；
Described screen layer is connected with described primary coil earth terminal.
The purpose of this utility model and solve its technical problem techniques below measure also can be used real further
Existing.
Preferably, aforesaid transformator, the first wherein said primary coil and the described second primary line
Enclose the printed circuit board (PCB) by being printed with multi-turn copper cash to constitute；
Described first primary coil, described first screen layer, described secondary shielding layer and described
The side of two primary coils is equipped with many pin pins, and by first group of pin pin in many pin pins
Make described screen layer be connected with described primary coil earth terminal, drawn by many pin pins second group
Foot pin is described first primary coil and described second primary coil energising.
Preferably, aforesaid transformator, wherein said first screen layer is with described secondary shielding layer each
All include at least one circle shielding line.
Preferably, aforesaid transformator, described first screen layer and described secondary shielding layer are printing
There is the printed circuit board (PCB) of multi-turn shielding line.
Preferably, aforesaid transformator, wherein said secondary coil is by the wire being enclosed with insulation sheath
It is entwined.
Preferably, aforesaid transformator, wherein said heel piece includes groove structure and coiling
Post, described wrapping post is erected at the bottom portion of groove of described groove structure；
Described secondary coil is wrapped on described wrapping post.
Preferably, aforesaid transformator, wherein said the first primary coil, the described first shielding
The center of layer, described secondary shielding layer and the second described primary coil is respectively provided with through hole；
Described first primary coil, described first screen layer, described secondary shielding layer and described second
Primary coil is enclosed within described wrapping post by described through hole respectively.
Preferably, aforesaid transformator, at the bottom of the described iron core cover plate the most mutually covered and described iron core
Flap close side there is line outlet, the input of described secondary coil the first side with outfan from described
Line outlet stretches out outside iron core, and described secondary coil the second side is inconsistent with described pin pin.
On the other hand, the purpose of this utility model and solve its technical problem and also use following technical side
Case realizes.According to a kind of electronic equipment that the utility model proposes, comprising:
Apparatus body and power supply adaptor；
Described power supply adaptor includes transformator.
Described transformator includes:
Iron core, including iron core cover plate and heel piece；
Coil, including primary coil and secondary coil, described primary coil include the first primary coil,
Second primary coil；
Screen layer, described screen layer includes the first screen layer and secondary shielding layer, described first screen layer
Be provided with the headspace penetrated for the magnetic line of force on described secondary shielding layer；
Described first primary coil, described first screen layer, described secondary coil, described secondary shielding
Layer and described second primary coil are sequentially laminated on described heel piece；
Described screen layer is connected with described primary coil earth terminal.
The purpose of this utility model and solve its technical problem techniques below measure also can be used real further
Existing.
Preferably, aforesaid electronic equipment, wherein said electronic equipment body has touch screen.
By technique scheme, this utility model transformator and electronic equipment at least have the advantage that
This utility model provide technical scheme in, between the first primary coil and secondary coil and
Add provided with shielding layer between second primary coil and secondary coil, screen layer is provided with and penetrates for the magnetic line of force
Headspace, the magnetic line of force that magnetic field produces through the headspace on screen layer, thus can ensure
Transformator is properly functioning.And screen layer is connected by this utility model with described primary coil earth terminal,
When transformator works, a parasitic electricity between the multi-turn shielding line of primary coil and screen layer, can be produced
Holding, screen layer forms a closed-loop path, primary institute with primary by parasitic capacitance
The common mode interference signal produced can consume in the loop through parasitic capacitance, is not coupled to transformator
Secondary, such that it is able to reduce the common mode disturbances that electronic equipment is produced by transformator.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand this reality
By novel technological means, and can be practiced according to the content of description, below with this utility model
Preferred embodiment and coordinate accompanying drawing describe in detail as after.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of transformator that this utility model embodiment one provides；
Fig. 2 is the circuit theory diagrams of a kind of transformator that this utility model embodiment one provides.
Detailed description of the invention
By further illustrating that this utility model is by reaching the technology hands that predetermined utility model purpose is taked
Section and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the transformator that the utility model proposes and
Its detailed description of the invention of electronic equipment, structure, feature and effect thereof, after describing in detail such as.Following
In explanation, what different " embodiments " or " embodiment " referred to is not necessarily same embodiment.This
Outward, special characteristic, structure or the feature in one or more embodiment can be combined by any suitable form.
Embodiment one
As it is shown in figure 1, a kind of transformator that this utility model embodiment one proposes, comprising: iron core,
Coil and screen layer, iron core includes iron core cover plate 11 and heel piece 12；Coil includes primary coil
And secondary coil 23, primary coil includes first primary coil the 21, second primary coil 22；Shielding
Layer includes the first screen layer 31 and secondary shielding layer (not shown), the first screen layer 31 and second
The headspace penetrated for the magnetic line of force it is provided with on screen layer；First primary coil the 21, first screen layer
31, secondary coil 23, secondary shielding layer and the second primary coil 22 are sequentially laminated on heel piece
On 12；Screen layer is connected with primary coil earth terminal.Concrete, transformator operationally, magnetic field
The magnetic line of force produced passes perpendicularly through each layer of primary coil and secondary coil, owing to screen layer is folded in the
Between one primary coil and secondary coil and between the second primary coil and secondary coil, therefore shield
Layer can hinder passing of the magnetic line of force, this utility model on the shielding layer be provided with for the magnetic line of force penetrate pre-
Spacing, it is ensured that the magnetic line of force can pass screen layer, will not be absorbed by screen layer, thus ensure transformation
Device is properly functioning.Compared to making the transformator of screen layer of a monoblock copper sheet, this utility model provides
Transformer efficiency is higher, more saves space.
When specifically installing, heel piece 11 and iron core cover plate 12 use rectangular design, at iron core cover plate
11 can be provided with interface arrangment on the contact surface of heel piece 12, it is ensured that at iron core cover plate 11 and ferrum
Core base 12 can consolidate and cover.
As in figure 2 it is shown, traditional transformator is to reduce leakage inductance, the work efficiency of raising transformator, logical
Intersect the structure of coiling frequently with primary coil and secondary coil multilamellar, primary coil is many with secondary coil
Layer intersects the structure of coiling, owing to primary coil and secondary coil contact area increase, primary coil with
The coupling electric capacity produced between secondary coil increases, in actual applications, and primary coil and secondary coil
Between produce coupling electric capacity C3 be by primary generation common mode disturbances be coupled to transformer secondary output
Main path, the main method reducing common mode disturbances reduces between primary coil and secondary coil
Coupling electric capacity C3.In the technical scheme that this utility model provides, coil includes the first primary coil, secondary
Level coil, the second primary coil, the winding method of coil is sandwich winding, the i.e. first primary coil
It is wound on iron core with the second primary coil clamping secondary coil, this primary and secondary coil winding mode, just
The contact area of level coil and secondary coil less than primary coil and secondary coil multilamellar intersect coiling around
Mode processed, it is possible to achieve in the case of leakage inductance increase is the least, is significantly reduced primary coil with secondary
The coupling electric capacity C3 produced between coil.Thus in the case of not affecting transformer efficiency, reduce and become
The common mode disturbances that electronic equipment is produced by depressor.
The transformator that this utility model embodiment one provides, is connected screen layer with primary coil earth terminal
Connect, on primary coil and the first screen layer and secondary shielding layer between can produce parasitic capacitance C4,
Screen layer forms a complete Guan Bi with primary by parasitic capacitance C4 and bulky capacitor C1
Loop, common mode interference signal produced by primary can be between screen layer and primary coil
Parasitic capacitance C4 and primary bulky capacitor C1 consume in the loop, be not coupled to become
Depressor is secondary, thus reduces the common mode disturbances that electronic equipment is produced by transformator.
A kind of transformator that this utility model embodiment one proposes, due at primary coil and secondary coil
Between add screen layer so that distance between primary coil and secondary coil increases, primary coil
Become anti-with the distance coupled between the size of electric capacity and primary coil and secondary coil between secondary coil
Ratio, therefore the distance between primary coil and secondary coil increases, and reduces primary coil and secondary wire
Coupling electric capacity between circle, thus reduce the transformator common mode disturbances to electronic equipment.
A kind of transformator that this utility model embodiment one proposes, the first screen layer is each with secondary shielding layer
From all including at least one circle shielding line, concrete, the first screen layer is with secondary shielding layer and is printed with
The printed circuit board (PCB) of multi-turn shielding line.Multi-turn shielding line on screen layer is multi-turn flat copper wire, flat
Copper cash is printed on a printed circuit, the first screen layer and secondary shielding layer phase the most on a printed circuit
It is reserved with, between two adjacent circle shielding lines, the predetermined interval distance penetrating the magnetic line of force, i.e. passes for the magnetic line of force
Headspace, so can ensure that the magnetic line of force passes in the gap of adjacent shields line from screen layer,
Will not be absorbed by screen layer, thus ensure that transformator is properly functioning.As it is shown in figure 1, the first primary line
Circle 21 and the second primary coil 22 are constituted, due to just by the printed circuit board (PCB) being printed with multi-turn copper cash
Level coil turn is more, and this utility model uses and is printed with the printed circuit board (PCB) of multi-turn copper cash as primary
Coil can reduce the space that primary coil takies, such that it is able to reduce the volume of transformator.First
Primary coil the 21, first screen layer 31, secondary shielding layer and the second primary coil 22 are used
Printed circuit board (PCB) side, offers multiple pin pin jack 41, and pin pin 42 is interspersed in pin pin jack
In 41, the public point of the multi-turn copper cash on printed circuit board (PCB) leads to pin pin jack 41, works as pin
Pin 42 inserts pin pin jack 41 when being connected with power supply, makes multi-turn copper cash and pin pin 42 realize being electrically connected
Connect.
Concrete, make screen layer and primary coil earth terminal by first group of pin pin in many pin pins
It is connected, will be corresponding to pin pin jack corresponding to the earth terminal of primary coil and shielding layer grounding end
Pin pin jack corresponding, and passed by a pin pin；By in many pin pins second group
Pin pin is the first primary coil and the second primary coil is powered, will the input of the first primary coil
Pin pin jack corresponding to the pin pin jack of end correspondence and the second primary coil earth terminal is corresponding,
And passed by a pin pin.After iron core cover plate and heel piece cover, pin pin stretches out transformation
Device is connected with load.
The pin pin that a kind of transformator that this utility model embodiment one provides is used can be that L-type is drawn
Foot pin.
A kind of transformator that this utility model embodiment one proposes, due to secondary coil and iron core, secondary
Coil directly contacts with primary coil, in order to ensure secondary coil and iron core, secondary coil and primary line
Circle keeps state of insulation, and secondary coil is that the wire being enclosed with insulation sheath is entwined.
As it is shown in figure 1, heel piece 12 includes groove structure and wrapping post 121, on heel piece
Lower both sides have the edge 122 of projection, and protruding wrapping post 121 is erected at the bottom portion of groove of groove structure
Center；The edge 122 of wrapping post 121 height both sides upper and lower with heel piece projection is the most identical.Around
Terminal 121 is oval wrapping post, and secondary coil 23 is looped around on oval wrapping post 121, first
Primary coil the 21, first screen layer 31, secondary shielding layer 31 and the center of the second primary coil 22
It is respectively provided with the through hole matched with wrapping post 121；First primary coil the 21, first screen layer 31,
Secondary shielding layer and the second primary coil 22 are stacked gradually by through hole respectively and are set in wrapping post 121
On.
As it is shown in figure 1, secondary coil 23 is wrapped on the oval wrapping post 121 of heel piece, the
One primary coil 21 and the first screen layer 31 are sequentially overlapped above secondary coil 23, secondary shielding layer
With the second primary coil 22 below secondary coil 23, at the bottom of the iron core cover plate 11 mutually covered and iron core
The side that seat 12 covers has line outlet, after iron core cover plate and heel piece cover, and secondary coil 23
The input of the first side and outfan, outside line outlet stretches out iron core, are connected with transformer load, secondary
Level coil 23 second side is inconsistent with pin pin 42.Firm being fixed at the bottom of iron core of secondary coil can be made
On seat.
Embodiment two
A kind of electronic equipment that this utility model embodiment two provides, including electronic equipment body and electricity
Source adapter, power supply adaptor includes that transformator, transformator include: iron core, including iron core cover plate with
Heel piece；Coil, including primary coil and secondary coil, primary coil includes the first primary line
Circle, the second primary coil；Screen layer, screen layer includes the first screen layer and secondary shielding layer, first
The headspace penetrated for the magnetic line of force it is provided with on screen layer and secondary shielding layer, the first primary coil,
First screen layer, secondary coil, secondary shielding layer and the second primary coil are sequentially laminated at the bottom of iron core
On seat；Screen layer is connected with primary coil earth terminal.
Concrete, the transformator described in the present embodiment two can directly use above-described embodiment one to provide
Transformator, concrete implementation structure can be found in the related content described in above-described embodiment one, the most not
Repeat again.
A kind of electronic equipment that this utility model embodiment two provides, electronic equipment body has touch screen.
Electronic equipment can be mobile phone, display or panel computer etc..
In use, in the technical scheme that this utility model provides, in the first primary coil and secondary wire
Add provided with shielding layer between circle and between the second primary coil and secondary coil, screen layer is provided with confession
The headspace that the magnetic line of force penetrates, it is ensured that transformator can be properly functioning.And this utility model will screen
Cover layer to be connected with described primary coil earth terminal, meeting between primary coil and screen layer multi-turn shielding line
Producing a parasitic capacitance, screen layer forms a closed-loop path with primary by parasitic capacitance,
Common mode disturbances produced by primary can consume in the loop through parasitic capacitance, will not couple
To transformer secondary output, such that it is able to reduce the common mode disturbances that electronic equipment is produced by transformator.
The above, be only preferred embodiment of the present utility model, not makees this utility model
Any pro forma restriction, according to technical spirit of the present utility model above example is made any
Simple modification, equivalent variations and modification, all still fall within the range of technical solutions of the utility model.
Claims (10)
1. a transformator, it is characterised in that: comprising:
Iron core, including iron core cover plate and heel piece；
Coil, including primary coil and secondary coil, described primary coil include the first primary coil,
Second primary coil；
Screen layer, described screen layer includes the first screen layer and secondary shielding layer, described first screen layer
Be provided with the headspace penetrated for the magnetic line of force on described secondary shielding layer；
Described first primary coil, described first screen layer, described secondary coil, described secondary shielding
Layer and described second primary coil are sequentially laminated on described heel piece；
Described screen layer is connected with described primary coil earth terminal.
Transformator the most according to claim 1, it is characterised in that
Described first primary coil and described second primary coil are by the printing electricity being printed with multi-turn copper cash
Road plate is constituted；
Described first primary coil, described first screen layer, described secondary shielding layer and described
The side of two primary coils is equipped with many pin pins, and by first group of pin pin in many pin pins
Make described screen layer be connected with described primary coil earth terminal, drawn by many pin pins second group
Foot pin is described first primary coil and described second primary coil energising.
Transformator the most according to claim 2, it is characterised in that
Described first screen layer and described secondary shielding layer the most all include at least one circle shielding line.
Transformator the most according to claim 3, it is characterised in that
Described first screen layer and described secondary shielding layer are the printed circuit being printed with multi-turn shielding line
Plate.
Transformator the most according to claim 4, it is characterised in that
Described secondary coil is entwined by the wire being enclosed with insulation sheath.
Transformator the most according to claim 5, it is characterised in that
Described heel piece includes that groove structure and wrapping post, described wrapping post are erected at described recessed
The bottom portion of groove of groove structure；
Described secondary coil is wrapped on described wrapping post.
Transformator the most according to claim 6, it is characterised in that
Described first primary coil, described first screen layer, described secondary shielding layer and described second
The center of primary coil is respectively provided with through hole；
Described first primary coil, described first screen layer, described secondary shielding layer and described second
Primary coil is enclosed within described wrapping post by described through hole respectively.
Transformator the most according to claim 7, it is characterised in that
The side that described iron core cover plate and the described heel piece mutually covered covers has line outlet, institute
State the input of secondary coil the first side with outfan outside described line outlet stretches out iron core, described time
Level coil the second side is inconsistent with described pin pin.
9. an electronic equipment, it is characterised in that: comprising:
Apparatus body and power supply adaptor；
Described power supply adaptor includes arbitrary described transformator in the claims 1-8.
Electronic equipment the most according to claim 9, it is characterised in that
On described apparatus body, there is touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148281.XU CN205487700U (en) | 2016-02-26 | 2016-02-26 | Transformer and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148281.XU CN205487700U (en) | 2016-02-26 | 2016-02-26 | Transformer and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205487700U true CN205487700U (en) | 2016-08-17 |
Family
ID=56679309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620148281.XU Active CN205487700U (en) | 2016-02-26 | 2016-02-26 | Transformer and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205487700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359038A (en) * | 2017-08-30 | 2017-11-17 | 深圳市兴奕精密五金有限公司 | A kind of charger transformer |
| CN110190837A (en) * | 2019-06-24 | 2019-08-30 | 镇江英创电力电子有限公司 | A kind of isolated amplifier device |
-
2016
- 2016-02-26 CN CN201620148281.XU patent/CN205487700U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359038A (en) * | 2017-08-30 | 2017-11-17 | 深圳市兴奕精密五金有限公司 | A kind of charger transformer |
| CN110190837A (en) * | 2019-06-24 | 2019-08-30 | 镇江英创电力电子有限公司 | A kind of isolated amplifier device |
| CN110190837B (en) * | 2019-06-24 | 2024-03-15 | 镇江英创电力电子有限公司 | Isolation amplifier device |
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| GR01 | Patent grant |