CN209591765U - A kind of PFC coil block - Google Patents
A kind of PFC coil block Download PDFInfo
- Publication number
- CN209591765U CN209591765U CN201920765080.8U CN201920765080U CN209591765U CN 209591765 U CN209591765 U CN 209591765U CN 201920765080 U CN201920765080 U CN 201920765080U CN 209591765 U CN209591765 U CN 209591765U
- Authority
- CN
- China
- Prior art keywords
- copper wire
- injection molding
- coil
- locating piece
- wire locating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 114
- 238000001746 injection moulding Methods 0.000 claims abstract description 39
- 229920006335 epoxy glue Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000005291 magnetic effect Effects 0.000 description 31
- 238000010586 diagram Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000011265 semifinished product Substances 0.000 description 5
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical group [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a kind of PFC coil block, the technical problem which solve existing PFC coil block device pressure resistance performances is poor, processing technology is cumbersome；Including being molded skeleton, coil, injection molding skeleton includes upper bottom surface, bottom surface and shell, cage connection upper bottom surface, bottom surface；Upper bottom surface, bottom surface are equipped with centre bore, and two centre bores are interconnected to form center hole post；Coil is located at injection molding skeletal internal, and is wound in the hole post of center；The side of injection molding skeleton is symmetrically arranged with two copper wire locating pieces, and copper wire locating piece includes the copper wire locating piece that the copper wire longitudinally extended to form outward by upper bottom surface or bottom surface one end draws block, draws block perpendicular to copper wire；Copper wire draws block end face vertical direction and is equipped with copper wire lead-out groove, and copper wire locating piece end face transverse direction is equipped with copper wire locating slot；Copper wire lead-out groove is communicated with copper wire locating slot, and copper wire lead-out groove is communicated with injection molding skeletal internal.The utility model is widely used in inductors technique field.
Description
Technical field
The utility model relates to a kind of coil blocks, more particularly to a kind of PFC coil block.
Background technique
Inductor is the component converted for the power supply of TV, radio, the communication apparatus etc., is transformed into voltage or electric current
Other energy play the stable effect of electric current, and PFC inductance is used in pfc circuit, and the full name in English of PFC is " Power
Factor Correction " means " PFC ", power factor refer to effective power and total power consumption (depending on
Power) between relationship, that is, effective power is divided by the ratio of total power consumption (apparent energy).Substantially power factor (PF) can be with
The degree that is used effectively of electric power is measured, when power factor (PF) value is bigger, it is higher to represent its electric power utilization rate.Switching Power Supply is a kind of
Condenser input type circuit, the phase difference between electric current and voltage will cause the loss of exchange power, just need pfc circuit at this time
Increase power factor.
PFC inductance generally comprises coil block, manganese-zinc ferrite core (Mn-Zn) two parts, and coil block includes injection molding
Skeleton, multiply silk-covered copper wire coiling coil.The sequence of operation is that winding multi-strand silk-covered copper wire forms line on injection molding skeleton first
Copper wire is wound on the PIN terminal of skeleton after the completion of coiling, carries out scolding tin after the completion by circle, then using glue by magnetic core and
Skeleton assembling is secured together, and completes the production of PFC inductance.
Voltage is very high in PFC inductive circuit as described above, it is desirable that PFC inductance must have very high pressure-resistant performance, i.e. copper
Pressure resistance is very high between line (Coil) and manganese-zinc ferrite core (Mn-Zn), and the magnetic core that PFC inductance uses is manganese-zinc ferrite core
(Mn-Zn), manganese-zinc ferrite core has lower resistivity, therefore pressure-resistant performance is very low, traditional PFC inductance copper wire again and
Magnetic core contact, this is just very easy to, and generation pressure resistance is bad, and the unbearable high pressure of PFC inductance is breakdown, and PFC inductance is caused to fail,
The bad generation of circuit burnout.PFC inductance uses multiply silk-covered wire simultaneously, in the case that winding state is bad, it is easier to occur
Pressure resistance is bad.In addition, the injection molding skeleton of existing coil block and air core coil are integrated injection molding, need coil winding first
It needs to position air core coil at air core coil, and when injection molding, the structure for being molded skeleton is excessively complicated, and processing technology is more numerous
It is trivial.
Summary of the invention
The utility model is provided for the technical problem that existing PFC coil block device pressure resistance performance is poor, processing technology is cumbersome
A kind of good pressure-resistant performance, the simple PFC coil block of processing technology.
For this purpose, the technical solution of the utility model is, including injection molding skeleton, coil, injection molding skeleton includes upper bottom surface, bottom
Face and shell, cage connection upper bottom surface, bottom surface；Upper bottom surface, bottom surface are equipped with centre bore, and two centre bores are connected with each other shape
At center hole post；Coil is located at injection molding skeletal internal, and is wound in the hole post of center；
The side of injection molding skeleton is symmetrically arranged with two copper wire locating pieces, and copper wire locating piece includes by upper bottom surface or bottom surface one
The copper wire that end longitudinally extends to form outward draws block, draws the copper wire locating piece of block perpendicular to copper wire；It is perpendicular that copper wire draws block end face
Histogram is equipped with copper wire lead-out groove upwards, and copper wire locating piece end face transverse direction is equipped with copper wire locating slot；Copper wire lead-out groove and copper
Line locating slot communicates, and copper wire lead-out groove is communicated with injection molding skeletal internal；Two ends of coil are respectively by two copper wire lead-out grooves
Stretch out, after be folded into copper wire locating slot；Shell and copper wire locating piece integrated injection molding.
Preferably, copper wire locating piece protrudes outward to form the first supporting lug in the distal end of copper wire locating slot；Copper wire positioning
Block is symmetrically arranged with two the second supporting lugs in the two sides of the first supporting lug.
Preferably, copper wire locating piece inner transverse direction is equipped with copper wire positioning through hole, copper wire positioning through hole and injection molding skeleton
Inside communicates.
Preferably, two ends of coil with epoxy glue hydropexis into copper wire locating slot, outside two end tips of coil
It is enclosed with soldering-tin layer.
Preferably, centre bore is rectangle, injection molding skeleton generally rectangular parallelepiped structure.
The beneficial effects of the utility model are molded the upper bottom surface of skeleton, bottom surface is equipped with centre bore, upper bottom surface, bottom
The centre bore in face is interconnected to form center hole post；Centre bore is rectangle, injection molding skeleton generally rectangular parallelepiped structure.It is molded skeleton
Side be symmetrically arranged with two copper wire locating pieces, copper wire locating piece includes longitudinally extending shape outward by upper bottom surface or bottom surface one end
At copper wire draw block, perpendicular to copper wire draw block copper wire locating piece；Copper wire draws block, copper wire locating piece is respectively equipped with and infuses
Copper wire lead-out groove, the copper wire locating slot that modeling skeletal internal communicates, copper wire lead-out groove, copper wire locating slot communicate, for drawing and consolidating
Determine coil terminals.Coil is not contacted with magnetic core, effectively reduces the undesirable occurrence probability of pressure resistance.The prior coiling of coil is to center hole post
On, it does not need to position injection molding, shell and copper wire locating piece integrated injection molding after coil to be coiled into air core coil, is molded skeleton knot
Structure is simple, easy to process.
Copper wire locating piece protrudes outward to form the first supporting lug in the distal end of copper wire locating slot, and the first supporting lug extends
Copper wire locating slot, copper wire good positioning effect.Copper wire locating piece is symmetrically arranged with two second in the two sides of the first supporting lug
Convex block is supportted, the second supporting block, the first supporting block play the role of avoiding product and pcb board excessively multicontact, are conducive to product heat dissipation.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram one of the utility model；
Fig. 2 is the stereoscopic schematic diagram two of the utility model；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the top view of Fig. 2；
Fig. 5 is coil block (end turn is not attached in copper wire locating slot) structural schematic diagram of the utility model；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is the hollow core structure schematic diagram of the utility model；
Fig. 8 is the center pillar core structure schematic diagram of the utility model；
Fig. 9 is the skeleton semi-finished product of the utility model, coil connection relationship diagram；
Figure 10 is the top view of Fig. 9；
Figure 11 is Fig. 9 middle skeleton semi-finished product structure schematic diagram.
Symbol description in figure
1. being molded skeleton；2. coil；3. upper bottom surface；4. bottom surface；5. centre bore；6. center hole post；7. copper wire draws block；
8. copper wire locating piece；9. copper wire lead-out groove；10. copper wire locating slot；11. end；12. copper wire positioning through hole；13. the first support is convex
Block；14. the second supporting block；15. loop bracket；16. center pillar magnetic core；17. hollow magnetic core；18. shell.
Specific embodiment
The utility model is described further below with reference to embodiment.
As shown in figs. 1-11, the utility model PFC coil block includes injection molding skeleton 1, coil 2, and injection molding skeleton 1 includes upper
Bottom surface 3, bottom surface 4 and shell 18, shell 18 connect upper bottom surface 3, bottom surface 4；Upper bottom surface 3, bottom surface 4 are equipped with centre bore 5,
Two centre bores 5 are interconnected to form center hole post 6；Coil 2 is located inside injection molding skeleton 1, and is wound in center hole post center
In hole post 6；
The side of injection molding skeleton 1 is symmetrically arranged with two copper wire locating pieces；Copper wire locating piece includes by upper bottom surface 3 or bottom surface
The copper wire that 4 one end longitudinally extend to form outward draws block 7, draws the copper wire locating piece 8 of block perpendicular to copper wire；Copper wire draws block 7
End face vertical direction is equipped with copper wire lead-out groove 9, and 8 end face transverse direction of copper wire locating piece is equipped with copper wire locating slot 10；Copper wire
Lead-out groove 9 is communicated with copper wire locating slot 10, is communicated inside copper wire lead-out groove 9 and injection molding skeleton 1；Two ends 11 of coil 2 are divided
Do not stretched out by two copper wire lead-out grooves 9, after be folded into copper wire locating slot 10.Shell 18 and 8 integrated injection molding of copper wire locating piece at
Type.
Copper wire locating piece 8 protrudes outward to form the first supporting lug 13 in the distal end of copper wire locating slot 10, and the first support is convex
Block 13 extends copper wire locating slot 10, copper wire good positioning effect.
Copper wire locating piece 8 is symmetrically arranged with two the second supporting lugs 15, the second support in the two sides of the first supporting lug 13
Block 14, the first supporting block 14 play the role of avoiding product and pcb board excessively multicontact, are conducive to product heat dissipation.
8 inner transverse direction of copper wire locating piece be equipped with copper wire positioning through hole 12, copper wire positioning through hole 12 and injection molding skeleton 1 in
Portion communicates；12 quantity of copper wire positioning through hole is one or more, and quantity is determined according to the requirement of the specific PIN eyelet of wiring board.
Two ends 11 of coil 2 use epoxy glue hydropexis into copper wire locating slot 10, outside 2 two ends of coil, 11 end
It is enclosed with soldering-tin layer.Copper wire perfectly replacement need to can wind traditional PI N-terminal of scolding tin after copper wire after fixation, avoid weldering
The bad phenomenons such as rosin joint caused by tin.
Centre bore 5 is rectangle, injection molding skeleton 1 generally rectangular parallelepiped structure.
The magnetic core that the present embodiment PFC coil block is used cooperatively can be two E shaped magnetic cores, be also possible to center pillar magnetic core
16 and hollow magnetic core 17 (referring to Fig. 7,8).
Specifically, center pillar magnetic core 16, hollow magnetic core 17 are rectangular parallelepiped structure.
5 edge of centre bore of injection molding 1 bottom surface 4 of skeleton extends inwardly to form loop bracket 15.Loop bracket 15 is for branch
Center pillar magnetic core 16 is supportted, the fixation of center pillar magnetic core 16 is located on loop bracket 15.Specific fixing means is point after being put into center pillar magnetic core
Glue is fixed.
Hollow magnetic core 17 is equipped with rectangular through-hole, and on injection molding skeleton 1, hollow magnetic core 17 is covered for 17 sets of hollow magnetic core
It is molded four end faces in front and back up and down of skeleton 1；Between existing between 6 inner wall of center pillar magnetic core 16 and center hole post, hollow magnetic core 17
Gap.Hollow magnetic core 17 draws block 7 with copper wire and keeps concordant.
Center pillar magnetic core 16 is not contacted with hollow magnetic core 17, and gap portion generates GAP for adjusting product characteristic, isochrone
Circle 2 is not contacted with center pillar magnetic core 16, hollow magnetic core 17, reduces the undesirable occurrence probability of pressure resistance.
Compared to traditional centre-pillar structure that air gap is opened in centre, the integrated poly- magnetic effect of center pillar magnetic core 16 is more preferable, product characteristic
More preferably.Hollow magnetic core 17 and being used cooperatively for independent center pillar magnetic core 16 do not need to carry out GAP grinding, not will cause magnetic core wave
Take, and processing technology is simple.The two is used in combination, and can directly carry out after the completion of the electrical characteristics design as needed of all sizes
Assembling uses, and operation is more convenient in production technology.
The process of the utility model: first using injection-moulding device injection molding skeleton semi-finished product (referring to Figure 11), then exist
Coiling (referring to Fig. 9,10) is carried out on skeleton semi-finished product, the semi-finished product after coiling are fixed on injection mold and are molded, note is formed
It moulds skeleton 1 (referring to Fig. 5), it is using injected plastics material that copper wire is fully wrapped around during being somebody's turn to do, avoid copper wire leakage from causing product
It is pressure-resistant and electrically bad；Then magnetic core is assembled.
The only above person, only specific embodiment of the utility model implement when that cannot limit the utility model with this
Range, therefore the displacement of its equivalent assemblies, or according to equivalent changes and modifications made by the utility model patent protection scope, all answer
Still belong to the scope that the utility model claims book is covered.
Claims (5)
1. a kind of PFC coil block, characterized in that including being molded skeleton, coil, the injection molding skeleton includes upper bottom surface, bottom
Face and shell, upper bottom surface, bottom surface described in the cage connection；The upper bottom surface, bottom surface are equipped with centre bore, described in two
Centre bore is interconnected to form center hole post；The coil is located at the injection molding skeletal internal, and is wound in the center hole post
On；
The side of the injection molding skeleton is symmetrically arranged with two copper wire locating pieces, and the copper wire locating piece includes by upper bottom surface or bottom
The copper wire that face one end longitudinally extends to form outward draws block, draws the copper wire locating piece of block perpendicular to the copper wire；The copper wire
It draws block end face vertical direction and is equipped with copper wire lead-out groove, copper wire locating piece end face transverse direction is positioned equipped with copper wire
Slot；The copper wire lead-out groove is communicated with the copper wire locating slot, and the copper wire lead-out groove is communicated with the injection molding skeletal internal；Institute
Two ends of coil are stated to be stretched out by two copper wire lead-out grooves respectively, after be folded into the copper wire locating slot；It is described outer
Shell and the copper wire locating piece integrated injection molding.
2. PFC coil block according to claim 1, which is characterized in that the copper wire locating piece is positioned in the copper wire
The distal end of slot protrudes outward to form the first supporting lug；The copper wire locating piece is symmetrically set in the two sides of first supporting lug
There are two the second supporting lugs.
3. PFC coil block according to claim 2, which is characterized in that the copper wire locating piece inner transverse direction is set
There is copper wire positioning through hole, the copper wire positioning through hole is communicated with the injection molding skeletal internal.
4. PFC coil block according to claim 1, which is characterized in that two end epoxy glue of the coil
Fixed in the copper wire locating slot, two end tips of the coil are wrapped with soldering-tin layer.
5. PFC coil block according to claim 1, which is characterized in that the centre bore is rectangle, the injection molding skeleton
Generally rectangular parallelepiped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765080.8U CN209591765U (en) | 2019-05-24 | 2019-05-24 | A kind of PFC coil block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765080.8U CN209591765U (en) | 2019-05-24 | 2019-05-24 | A kind of PFC coil block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209591765U true CN209591765U (en) | 2019-11-05 |
Family
ID=68346178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920765080.8U Active CN209591765U (en) | 2019-05-24 | 2019-05-24 | A kind of PFC coil block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209591765U (en) |
-
2019
- 2019-05-24 CN CN201920765080.8U patent/CN209591765U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111724980B (en) | Manufacturing method of inductor with side surface provided with air gap and two-in-one structure | |
| CN204991391U (en) | Special type pastes dress colour code inductance | |
| CN204480854U (en) | A kind of integrated inductance | |
| CN209591765U (en) | A kind of PFC coil block | |
| CN204257361U (en) | Lead frame and the transformer framework made based on lead frame | |
| CN109166710B (en) | Transformer with built-in multilayer three-dimensional coil and preparation method thereof | |
| CN206532682U (en) | A kind of pair of power SMT Inductor | |
| CN209591746U (en) | A kind of PFC inducer | |
| CN206163282U (en) | PFC inductance | |
| CN205723097U (en) | A kind of Novel chip inductor | |
| CN206471205U (en) | A kind of adjustable flat surface transformer | |
| CN210837432U (en) | Transformer framework and transformer | |
| CN206163283U (en) | Inductor | |
| CN206210516U (en) | A kind of coil block | |
| CN208908181U (en) | Chip inductor and electronic equipment | |
| CN202887906U (en) | Magnetic module | |
| CN207199397U (en) | A kind of paster power inductance | |
| CN215451123U (en) | Novel wire winding inductance magnetic core structure | |
| CN207503750U (en) | Common mode inductance and electronic equipment | |
| CN209526003U (en) | A kind of bottom plate inductance | |
| CN206471218U (en) | A kind of new power inductance | |
| CN203588813U (en) | Structure of wafer-type inductor | |
| CN218957506U (en) | EQ type magnetic powder core inductor | |
| CN212625103U (en) | Integrated into one piece inductance structure of DIP commentaries on classics SMD | |
| CN213366303U (en) | Flat high-current inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: PFC coil assembly Effective date of registration: 20200528 Granted publication date: 20191105 Pledgee: Bank of China Limited Weihai Wendeng sub branch Pledgor: WENDENG MST ELECTRONIC Co.,Ltd. Registration number: Y2020980002578 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: No.34-10, Guangzhou road, Wendeng Economic Development Zone, Weihai City, Shandong Province 264400 Patentee after: Maishiteng Technology (Shandong) Co.,Ltd. Address before: 264400 Dongshou, North Kunyu Road, Wendeng Economic Development Zone, Weihai City, Shandong Province Patentee before: WENDENG MST ELECTRONIC Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210519 Granted publication date: 20191105 Pledgee: Bank of China Limited Weihai Wendeng sub branch Pledgor: WENDENG MST ELECTRONIC Co.,Ltd. Registration number: Y2020980002578 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A PFC coil assembly Effective date of registration: 20210524 Granted publication date: 20191105 Pledgee: Bank of China Limited Weihai Wendeng sub branch Pledgor: Maishiteng Technology (Shandong) Co.,Ltd. Registration number: Y2021980003896 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220609 Granted publication date: 20191105 Pledgee: Bank of China Limited Weihai Wendeng sub branch Pledgor: Maishiteng Technology (Shandong) Co.,Ltd. Registration number: Y2021980003896 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A PFC coil component Effective date of registration: 20230522 Granted publication date: 20191105 Pledgee: Bank of China Limited Weihai Wendeng sub branch Pledgor: Maishiteng Technology (Shandong) Co.,Ltd. Registration number: Y2023980041137 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |