CN207558592U - A kind of flat surface transformer and charging unit - Google Patents
A kind of flat surface transformer and charging unit Download PDFInfo
- Publication number
- CN207558592U CN207558592U CN201721163000.9U CN201721163000U CN207558592U CN 207558592 U CN207558592 U CN 207558592U CN 201721163000 U CN201721163000 U CN 201721163000U CN 207558592 U CN207558592 U CN 207558592U
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- circuit board
- magnetic core
- flat surface
- layer
- bakelite
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Abstract
The utility model discloses a kind of flat surface transformer and charging units.The flat surface transformer includes：Secondary rolling thread group, the secondary rolling thread group for plane concentric circles it is close around；Bakelite stent, the bakelite stent are hollow cylindrical body, and secondary rolling thread group is sheathed on the bakelite stent outer；Stamp has primary coil cabling, first circuit board and second circuit board to be connect with bakelite stent, and secondary rolling thread group is held between first circuit board and second circuit board on first circuit board and second circuit board, first circuit board and second circuit board；First magnetic core and the second magnetic core, magnetic core column is correspondingly arranged in the middle part of first magnetic core and the second magnetic core, the magnetic core column of first magnetic core and the second magnetic core can be by bakelite stent, so as to which secondary rolling thread group, first circuit board and second circuit board be made to be held between the first magnetic core and the second magnetic core.By the above-mentioned means, the utility model can reduce the volume of transformer, so as to reduce the volume of charging unit.
Description
Technical field
The utility model is related to field of circuit technology, more particularly to a kind of flat surface transformer and charging unit.
Background technology
Constantly universal with fast charge technology, mobile phone charging current is increasing, and the power of charger is also more and more therewith
Greatly, the volume of charger is also increasing, but the appearance requirement that existing market includes mobile phone charger is higher and higher,
Ask mobile phone as small as possible including charger volume, and in the circuit design process of charger, transformer is shared in all devices
The device of volume ratio maximum, therefore the volume of charger is determined in the sufficiently bulky degree of transformer.
And transformer due to the structure and combination of the devices such as its winding and magnetic core, causes to become in charger at present
The volume of depressor is excessive, so as to make charger volume excessive, it is impossible to meet appearance requirement of the user to charger.
Utility model content
In view of this, the utility model is mainly solving the technical problems that provide a kind of flat surface transformer and charging dress
It puts, the volume of transformer can be reduced, so as to reduce the volume of charging unit.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of flat surface transformer is provided,
The flat surface transformer includes：
Secondary rolling thread group, the secondary rolling thread group for plane concentric circles it is close around；Bakelite stent, the bakelite stent are hollow cylinder
Structure, secondary rolling thread group are sheathed on the bakelite stent outer；First circuit board and second circuit board, first circuit board and
Stamp has primary coil cabling, first circuit board and second circuit board to be connect with bakelite stent on second circuit board, and secondary
Coiling group is held between first circuit board and second circuit board；First magnetic core and the second magnetic core, the first magnetic core and
Be correspondingly arranged on magnetic core column in the middle part of two magnetic cores, the magnetic core column of the first magnetic core and the second magnetic core can by bakelite stent, from
And secondary rolling thread group, first circuit board and second circuit board is made to be held between the first magnetic core and the second magnetic core, to reality
Electromagnetic coupling between existing secondary rolling thread group, first circuit board and second circuit board；
First circuit board and second circuit plate part are correspondingly arranged on clamping structure, and the first magnetic core and the second magnetic core
Be provided with the fixing groove of corresponding first circuit board and second circuit board clamping structure, to accommodating fixed first circuit board and
The clamping structure of second circuit board, so as to fix first circuit board and second circuit board.
In order to solve the above technical problems, another technical solution that the utility model uses is：A kind of charging unit is provided,
The charging unit includes the flat surface transformer that above-described embodiment is illustrated, which includes：
Secondary rolling thread group, the secondary rolling thread group for plane concentric circles it is close around；Bakelite stent, the bakelite stent are hollow cylinder
Structure, secondary rolling thread group are sheathed on the bakelite stent outer；First circuit board and second circuit board, first circuit board and
Stamp has primary coil cabling, first circuit board and second circuit board to be connect with bakelite stent on second circuit board, and secondary
Coiling group is held between first circuit board and second circuit board；First magnetic core and the second magnetic core, the first magnetic core and
Be correspondingly arranged on magnetic core column in the middle part of two magnetic cores, the magnetic core column of the first magnetic core and the second magnetic core can by bakelite stent, from
And secondary rolling thread group, first circuit board and second circuit board is made to be held between the first magnetic core and the second magnetic core, to reality
Electromagnetic coupling between existing secondary rolling thread group, first circuit board and second circuit board；
First circuit board and second circuit plate part are correspondingly arranged on clamping structure, and the first magnetic core and the second magnetic core
Be provided with the fixing groove of corresponding first circuit board and second circuit board clamping structure, to accommodating fixed first circuit board and
The clamping structure of second circuit board, so as to fix first circuit board and second circuit board.
The beneficial effects of the utility model are：The utility model on first circuit board and second circuit board by stamping
Coil cabling and fixed first circuit board and second circuit board are housed by the fixing groove of the first magnetic core and the second magnetic core
Clamping structure, the volume of transformer can be reduced, so as to reduce the volume of charging unit.
Description of the drawings
Fig. 1 is that the structure of one embodiment of the utility model flat surface transformer disassembles schematic diagram；
Fig. 2 is the structure diagram of one embodiment of the utility model bakelite stent；
Fig. 3 is the structure diagram of one embodiment of the utility model bakelite support lead hole coiling form；
Fig. 4 is the structure diagram of one embodiment of the utility model first circuit board and second circuit board winding；
Fig. 5 is the structure diagram of one embodiment of the first magnetic core of the utility model and the second core combination form；
Fig. 6 is the structure diagram of one embodiment of the utility model fixing plug pin type of attachment；
Fig. 7 is the diagrammatic cross-section of flat surface transformer composite structure shown in Fig. 1；
Fig. 8 is the principle schematic of flat surface transformer circuit shown in Fig. 1；
Fig. 9 is the structure diagram of one embodiment of the utility model charging unit.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.
Referring to Fig. 1, the structure that Fig. 1 is one embodiment of the utility model flat surface transformer disassembles schematic diagram.
In the present embodiment, flat surface transformer 100 includes secondary rolling thread group 101, and secondary rolling thread group 101 is flat surface transformer
It is higher than the voltage threshold that load can bear, therefore need with the coil group of load connection, the voltage of usual primary coil in 100
It wants secondary rolling thread group 101 that the high pressure of primary coil is changed into load to can bear in voltage threshold, secondary rolling thread group 101 is flat
Face concentric circles is close around to make multiturn coiling in one plane winding, so as to reduce the height of flat surface transformer 100.
Optionally, secondary rolling thread group 101 can be using three layer insulation wire as coiling, line width 0.9mm, and the number of turns is enclosed for 14, and three
Layer insulated wire is a kind of High Performance Insulation conducting wire, and for this conducting wire there are three insulating layer, centre is core wire, and first layer is in golden yellow
Polyamine film, thickness is micron order, can bear the high voltage pulse of 3KV, and the second layer is varnished, the third of high-insulativity
Layer is transparent glass layer, and the overall thickness of insulating layer is 20-100um, and advantage is dielectric strength height, arbitrary between two layers
The safe voltage of exchange 3000V can be born, current density is big, certainly, and as skilled in the art to understand, secondary rolling thread group
101 can also with enameled wire etc. for coiling, in plane concentric circles it is close around, it is intended to for load voltage conversion line is provided, herein not
It limits, and the line width of secondary rolling thread group 101 and the number of turns can bear voltage strength according to load and determine, it is intended to adjustment time
Faradic big as low as load can bear in voltage strength threshold value in grade coiling group 101.
In the present embodiment, flat surface transformer 100 includes bakelite stent 102, and bakelite stent 102 is hollow cylindrical body,
As shown in Fig. 2, secondary rolling thread group 101 is sheathed on 102 outside of bakelite stent, i.e. 101 coiling of secondary rolling thread group surrounds bakelite stent
102 outer circumferences carry out coiling, so that secondary rolling thread group 101 is sheathed on 102 outside of bakelite stent.Flat surface transformer 100 also wraps
First circuit board 103 and second circuit board 104 are included, stamping on first circuit board 103 and second circuit board 104 has primary line
Cabling is enclosed, first circuit board 103 and second circuit board 104 are connect with bakelite stent 102, and secondary rolling thread group 101 is held on
Between first circuit board 103 and second circuit board 104.102 side wall of bakelite stent is provided with fairlead 201, secondary rolling thread group
A 101 wherein leads 301 can be by fairlead 201, from first circuit board 103 or second circuit board 104 far from secondary rolling thread group
101 sides are simultaneously pierced by close to first circuit board 103 or second circuit board 104, as shown in Figure 3.
Optionally, first circuit board 103 and 104 middle part of second circuit board are correspondingly arranged on through-hole, 102 liang of bakelite stent
The through-hole of the corresponding first circuit board 103 in end and second circuit board 104 is provided with auxiliary section 202, as shown in Fig. 2, bakelite stent
It 102 can be connect by the auxiliary section 202 at its both ends with first circuit board 103 and second circuit board 104.
Optionally, bakelite stent 102 can be other insulation support bodies such as plastic cement, plastics, to provide secondary rolling thread group
101st, the support construction between first circuit board 103 and second circuit board 104, does not limit herein.
Referring to Fig. 4, first circuit board 103 includes the first top layer 401 stacked gradually, the first middle layer 402 and the
One bottom 403, for carrying the first middle layer 402 and the first bottom 403, the stamp of the first bottom 403 has just the first top layer 401
Grade coil cabling, the first middle layer 402 include 404 and first primary coil layer 405 of offset line ring layer.
Optionally, the first primary coil layer 405 and the stamp of the first bottom 403 have primary coil cabling, primary coil cabling
For power supply connection circuit structure, be cause in flat surface transformer 100 electromagnetic induction electric current by coil, be plane change
Depressor 100 provides electric current input, so as to generate sensor circuit in secondary rolling thread group 101, and exports and extremely loads.In the present embodiment
In, 405 number of plies of the first primary coil layer can be three layers, and only discussing needs, not thereby to the first primary coil of the present embodiment
405 number of plies of layer cause to limit.The primary coil routing line width of first bottom 403 stamp is 0.3mm, and the number of turns is enclosed for 10, each first
The primary coil routing line width that primary coil layer 405 is stamped is 0.3mm, and the number of turns is 9 circles, 10 circles mutually substitute.
Optionally, offset line ring layer 404 includes the first offset line ring layer 406 and the second offset line ring layer that stack gradually
407, the first offset line ring layer 406 and the second offset line ring layer 407 stamp have bias coil cabling respectively, and line width is
0.15mm, the number of turns is 7 circles, to adjust the current potential of each element in flat surface transformer 100, certainly as those skilled in the art manage
Solution, bias coil routing line width and the number of turns are determined according to the current potential situation of element each in flat surface transformer 100, it is desirable to provide foot
The ability of enough each element current potentials of adjusting.
Optionally, 103 each layer of first circuit board can use the board structure of circuit of 0.6mm thickness, certainly, such as art technology
Personnel are understood that first circuit board 103 uses the thickness of board structure of circuit, it is intended to reduce the volume of flat surface transformer 100
Under the premise of, provide enough supporting roles, the thickness of 103 each layer circuit board structure of first circuit board to the coil cabling stamped thereon
Degree need to meet under the premise of the volume for reducing flat surface transformer 100, and the coil cabling that stamped thereon can be provided enough
Supporting role can not be limited herein by the thickness of 103 each layer circuit board structure of first circuit board that the present embodiment illustrates
It is fixed.
Referring to Fig. 4, second circuit board 104 includes the second top layer 408 stacked gradually, the second middle layer 409 and the
Two bottoms 410, for the second top layer 408 for carrying the second middle layer 409 and the second bottom 410, the stamp of the second bottom 410 has screen
Coil cabling is covered, the second middle layer 409 includes the second primary coil layer 411.
Optionally, the stamp of the second primary coil layer 411 has primary coil cabling, and primary coil cabling is the electricity of power supply connection
Line structure, for cause in flat surface transformer 100 electromagnetic induction electric current by coil, provide electricity for flat surface transformer 100
Stream input so as to generate sensor circuit in secondary rolling thread group 101, and is exported and is extremely loaded.In the present embodiment, the second primary line
411 number of plies of ring layer can be two layers, and only discussing needs, and not thereby 411 number of plies of the second primary coil of the present embodiment layer is caused
It limits.The primary coil routing line width that each second primary coil layer 411 is stamped is 0.3mm, and the number of turns is 9 circles, 10 circles mutually substitute.
Optionally, the shielded coil cabling of the second bottom 410 stamp, line width 0.15mm, the number of turns is 14 circles, to shield
Electromagnetic interference in flat surface transformer 100 between each coil, certainly as skilled in the art to understand, the line of shielded coil cabling
The wide and number of turns is determined according to the electromagnetic interference situation between coil each in flat surface transformer 100, it is desirable to provide enough mask planes
The ability of electromagnetic interference in transformer 100 between each coil, does not limit herein.
Optionally, 104 each layer of second circuit board can use the board structure of circuit of 0.6mm thickness, certainly, such as art technology
Personnel are understood that second circuit board 104 uses the thickness of board structure of circuit, it is intended to reduce the volume of flat surface transformer 100
Under the premise of, provide enough supporting roles, the thickness of 104 each layer circuit board structure of second circuit board to the coil cabling stamped thereon
Degree need to meet under the premise of the volume for reducing flat surface transformer 100, and the coil cabling that stamped thereon can be provided enough
Supporting role can not be limited herein by the thickness of 104 each layer circuit board structure of second circuit board that the present embodiment illustrates
It is fixed.
Optionally, the coil cabling material stamped in each coil layer in first circuit board 103 and second circuit board 104 can
Think copper cabling, thickness can be 0.105mm, certainly, as skilled in the art to understand, first circuit board 103 with
And the coil cabling material stamped in each coil layer in second circuit board 104 may be other materials cabling, such as silver etc.,
Thickness is determined according to the conductive capability of the material cabling, it is intended under the premise of being capable of providing normal conducting function, Neng Goucheng
By current strength, the abnormal conditions such as short circuit or open circuit do not occur as far as possible, do not limit herein.
In the present embodiment, flat surface transformer 100 includes the first magnetic core 105 and the second magnetic core 106, the first magnetic core 105
And 106 middle part of the second magnetic core is correspondingly arranged on the magnetic core column of magnetic core column 107, the first magnetic core 105 and the second magnetic core 106
107 can be by bakelite stent 102, so as to be held on secondary rolling thread group 101, first circuit board 103 and second circuit board 104
Between first magnetic core 105 and the second magnetic core 106, to realize secondary rolling thread group 101,103 and second electricity of first circuit board
Electromagnetic coupling between road plate 104.
First circuit board 103 and 104 part of second circuit board are correspondingly arranged on clamping structure 108, and the first magnetic core 105
And second magnetic core 106 be provided with the fixing groove of 104 clamping structure 108 of corresponding first circuit board 103 and second circuit board
109, to accommodating fixed first circuit board 103 and the clamping structure 108 of second circuit board 104, so as to fix the first circuit
Plate 103 and second circuit board 104.
Optionally, the clamping structure 108 that first circuit board 103 and 104 part of second circuit board are correspondingly arranged can be
Arc transition structure, the first magnetic core 105 and the second magnetic core 106 are provided with corresponding first circuit board 103 and second circuit board
The fixing groove 109 of 104 arc transition structures, to the circular arc mistake of accommodating fixed first circuit board 103 and second circuit board 104
Structure is crossed, so as to fix first circuit board 103 and second circuit board 104；Or first circuit board 103 and second circuit board
The clamping structure 108 that 104 parts are correspondingly arranged can be polygon transition structure, and the first magnetic core 105 and the second magnetic core 106 are set
The fixing groove 109 of 104 polygon transition structure of corresponding first circuit board 103 and second circuit board is equipped with, is fixed to accommodating
The polygon transition structure of first circuit board 103 and second circuit board 104, so as to fix first circuit board 103 and second
Circuit board 104；Obviously, as skilled in the art to understand, the fixing knot of first circuit board 103 and second circuit board 104
Structure 108 can also be first electricity of the correspondence of fixing groove 109 of other shapes transition structure, the first magnetic core 105 and the second magnetic core 106
The clamping structure 108 of road plate 103 and second circuit board 104 is set, can equally realize it is accommodating fix first circuit board 103 with
And the function of the clamping structure 108 of second circuit board 104, it does not limit herein.
Optionally, secondary rolling thread group 501 from first circuit board 502 or second circuit board 503 far from secondary rolling thread group 501 1
The lead 504 that side is pierced by, embedded first magnetic core 505 or the second magnetic core 506 are set, i.e. secondary rolling thread group 501 is from first circuit board
502 or second circuit board 503 far from the lead 504 that 501 side of secondary rolling thread group is pierced by from the first magnetic core 505 or the second magnetic core
506 507 front of magnetic core column is embedded, and the magnetic of fixing groove 109 is not provided with from corresponding first magnetic core, 505 or second magnetic core 506
507 side of core column is pierced by, as shown in Figure 5.
In the present embodiment, flat surface transformer 100 further comprises fixing plug pin 601, and fixing plug pin 601 passes through the first electricity
Road plate 103 and second circuit board 104 connect first circuit board 103 and second circuit board 104, to fix the first circuit
Plate 103 and second circuit board 104, as shown in Figure 6.
Optionally, fixing plug pin 601 can be rod-like structure etc., and material can be metal etc., it is desirable to provide the first electricity
Fixed relationship is reliably connected between road plate 103 and second circuit board 104, further fixes 103 and second electricity of first circuit board
Road plate 104 a, so that circuit board 103 is not relatively moved with second circuit board 104.
Fig. 7-8 is please referred to, Fig. 7 is the diagrammatic cross-section of flat surface transformer composite structure shown in Fig. 1, and Fig. 8 is put down shown in Fig. 1
The principle schematic of face transformer circuit.
In the present embodiment, the secondary rolling thread group 101 included by flat surface transformer 100, bakelite stent 102, the first circuit
Plate 103, second circuit board 104, the first magnetic core 105 and the second magnetic core 106 are combined into one form, flat surface transformer 100
Circuit theory is not thereby right as shown in figure 8, the present embodiment flat surface transformer circuit theory shown in Fig. 8 only discussion needs
The circuit theory of the present embodiment flat surface transformer 100 causes to limit.
In conclusion the utility model by the primary coil cabling of stamping on first circuit board and second circuit board,
Bias coil cabling and shielded coil cabling, and housed by the fixing groove of the first magnetic core and the second magnetic core and fix first
The clamping structure of circuit board and second circuit board can reduce the volume of transformer, so as to reduce the volume of charging unit.
Referring to Fig. 9, Fig. 9 is the structure diagram of one embodiment of the utility model charging unit.
In the present embodiment, charging unit 900 includes flat surface transformer 901, and flat surface transformer 901 is above-described embodiment institute
The flat surface transformer of elaboration, details are not described herein again.
The foregoing is merely the embodiments of the utility model, and it does not limit the scope of the patent of the present invention, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of flat surface transformer, which is characterized in that the flat surface transformer includes：
Secondary rolling thread group, the secondary rolling thread group for plane concentric circles it is close around；
Bakelite stent, the bakelite stent are hollow cylindrical body, and the secondary rolling thread group is sheathed on the bakelite stent outer；
Stamp has primary coil on first circuit board and second circuit board, the first circuit board and the second circuit board
Cabling, the first circuit board and the second circuit board are connect with the bakelite stent, and the secondary rolling thread group clamps
Between the first circuit board and the second circuit board；
Magnetic core column is correspondingly arranged in the middle part of first magnetic core and the second magnetic core, first magnetic core and second magnetic core,
The magnetic core column of first magnetic core and second magnetic core can be by the bakelite stent, so as to make the secondary rolling thread
Group, the first circuit board and the second circuit board are held between first magnetic core and second magnetic core, are used
To realize the electromagnetic coupling between the secondary rolling thread group, the first circuit board and the second circuit board；
The first circuit board and the second circuit plate part are correspondingly arranged on clamping structure, and first magnetic core and
Second magnetic core is provided with the fixing groove of the corresponding first circuit board and the second circuit board clamping structure, to hold
The clamping structure of the fixed first circuit board and the second circuit board is put, so as to fix the first circuit board and institute
State second circuit board.
2. flat surface transformer according to claim 1, which is characterized in that the first circuit board and the second circuit
Plate connect with the bakelite stent and specifically includes：
Through-hole is correspondingly arranged in the middle part of the first circuit board and the second circuit board, the bakelite stent both ends correspond to institute
The through-hole for stating first circuit board and the second circuit board is provided with auxiliary section, and the bakelite stent can matching by its both ends
Conjunction portion is connect with the first circuit board and the second circuit board.
3. flat surface transformer according to claim 1, which is characterized in that the first circuit board and the second circuit
The clamping structure that plate part is correspondingly arranged is arc transition structure, and first magnetic core and second magnetic core are provided with correspondence
The fixing groove of the first circuit board and the second circuit board arc transition structure, to accommodating fixed first circuit
The arc transition structure of plate and the second circuit board, so as to fix the first circuit board and the second circuit board；
Or
The clamping structure that the first circuit board and the second circuit plate part are correspondingly arranged be polygon transition structure, institute
It states the first magnetic core and second magnetic core is provided with the corresponding first circuit board and the second circuit board polygon mistake
The fixing groove of structure is crossed, to house the polygon transition structure of the fixed first circuit board and the second circuit board,
So as to fix the first circuit board and the second circuit board.
4. flat surface transformer according to claim 1, which is characterized in that the bakelite rack side wall is provided with fairlead,
The secondary rolling thread group includes an at least lead, and the lead of the secondary rolling thread group can be by the fairlead, from described
One circuit board or the second circuit board are far from the secondary rolling thread group side and close to the first circuit board or described second
Circuit board is pierced by.
5. flat surface transformer according to claim 1, which is characterized in that the flat surface transformer further comprises fixed insert
Needle, the fixing plug pin connect the first circuit board and the second circuit board, to the fixation first circuit board with
And the second circuit board.
6. flat surface transformer according to claim 1, which is characterized in that
The first circuit board includes the first top layer, the first middle layer and the first bottom that stack gradually, first top layer
For carrying first middle layer and first bottom, the first bottom stamp has a primary coil cabling, and described the
One middle layer includes offset line ring layer and the first primary coil layer；
The offset line ring layer includes the first offset line ring layer and the second offset line ring layer that stack gradually, first biasing
Coil layer and the second offset line ring layer stamp have bias coil routing line width for 0.15mm, and the number of turns is 7 circles.
7. flat surface transformer according to claim 6, which is characterized in that the second circuit board includes stack gradually the
Two top layers, the second middle layer and the second bottom, second top layer are used to carry second middle layer and described second
Bottom, the second bottom stamp have shielded coil routing line width for 0.15mm, and the number of turns is 14 circles, and second middle layer includes
Second primary coil layer.
8. flat surface transformer according to claim 7, which is characterized in that the first primary coil layer and described second
The stamp of primary coil layer has primary coil cabling, first bottom, the first primary coil layer and second primary
The primary coil cabling of coil be copper cabling, line width 0.3mm.
9. flat surface transformer according to claim 1, which is characterized in that the coiling of the secondary rolling thread group is three-layer insulated
Line, it is close around line width 0.9mm, the number of turns is 14 circles in plane concentric circles.
10. a kind of charging unit, which is characterized in that the charging unit includes such as claim 1~9 any one of them plane
Transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163000.9U CN207558592U (en) | 2017-09-11 | 2017-09-11 | A kind of flat surface transformer and charging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163000.9U CN207558592U (en) | 2017-09-11 | 2017-09-11 | A kind of flat surface transformer and charging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207558592U true CN207558592U (en) | 2018-06-29 |
Family
ID=62676107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721163000.9U Expired - Fee Related CN207558592U (en) | 2017-09-11 | 2017-09-11 | A kind of flat surface transformer and charging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207558592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447379A (en) * | 2019-08-27 | 2021-03-05 | 光宝电子(广州)有限公司 | Transformer and manufacturing method thereof |
-
2017
- 2017-09-11 CN CN201721163000.9U patent/CN207558592U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447379A (en) * | 2019-08-27 | 2021-03-05 | 光宝电子(广州)有限公司 | Transformer and manufacturing method thereof |
| US11804329B2 (en) | 2019-08-27 | 2023-10-31 | Lite-On Electronics (Guangzhou) Limited | Transformer and manufacturing method of transformer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20180911 |