CN213815580U - Conductive wire and transformer - Google Patents
Conductive wire and transformer Download PDFInfo
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- CN213815580U CN213815580U CN202023224079.6U CN202023224079U CN213815580U CN 213815580 U CN213815580 U CN 213815580U CN 202023224079 U CN202023224079 U CN 202023224079U CN 213815580 U CN213815580 U CN 213815580U
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Abstract
The utility model belongs to the technical field of the circular telegram conductor, especially, relate to a conductive wire and transformer, this conductive wire includes self-adhesion type cladding mechanism and conductor structure, self-adhesion type cladding mechanism sets up on conductor structure's the lateral wall, self-adhesion type cladding mechanism includes autohension enameled wire layer, autohension enameled wire layer sets up conductor structure is last to make wholly conductive wire can be the line cake column structure from rolling up, can be the line cake column structure from rolling up through the adhesion of above-mentioned self-adhesion type cladding mechanism to quick adaptation is to appointed work piece, for example on wave filter or the transformer, is favorable to optimizing the production steps of transformer or wave filter, improves production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the circular telegram conductor, especially, relate to a conductive wire and transformer.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.
The winding is the circuit part of the transformer and is wound by double-wire-covered insulated flat wires or enameled round wires. The basic principle of the transformer is the electromagnetic induction principle, and the basic working principle of the transformer is described by taking a single-phase double-winding transformer as an example: when voltage is applied to the primary side winding, current flows through the primary side winding, alternating magnetic fluxes are generated in the iron core, the magnetic fluxes are called main magnetic fluxes, and under the action of the main magnetic fluxes, the windings on the two sides respectively induce electric potential, and finally, the transformer regulating device is driven.
The transformer under long-term operating condition, the temperature of winding risees gradually, because the outer insulating layer of winding coil is mostly adopted the gluey material preparation to form, high temperature resistant high pressure performance is poor, and easy thermal deformation breaks, drops, leads to the winding coil performance to descend, influences transformer work, is unfavorable for the enterprise development.
In the manufacturing process of the transformer or the filter in the prior art, a wire cake part needs to be assembled to serve as a winding, a traditional wire cake is formed by gluing a wire rod by an operator and then winding the wire rod into a preset flat cake-shaped structure through equipment, and the manufacturing mode is complex in operation, influences the production efficiency of the transformer and is not beneficial to enterprise development
Among the winding of the transformer among the prior art, the surrounding layer of its coil is screw thread column structure slope cladding on leading the core through plastics such as PET or rubber material, traditional coiling cladding process goes on before, need carry out angle modulation to banded cladding material of silk and realize the cladding of spiral coincide, prevent to have the gap structure in the surrounding layer, however, in the actual production process, in order to improve cladding efficiency, operating personnel can adjust cladding material and conductor structure border's contained angle to less within range, lead to banded cladding material of silk almost with conductor structure parallel coincidence, the surrounding layer structure is loose, and is unstable, seriously influence the quality of this wire, be unfavorable for enterprise's development.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a conductive wire and transformer, the transformer manufacture process who aims at solving among the prior art and adopts the line cake structure needs earlier through loaded down with trivial details operation preparation line cake winding, leads to the technical problem that production efficiency is low.
In order to achieve the above object, the embodiment of the utility model provides a pair of conductive wire is applicable to miniature transformer, high-power car charging transformer and 5g frequency conversion transformer, including self-adhesion type cladding mechanism and conductor structure, self-adhesion type cladding mechanism sets up on conductor structure's the lateral wall, self-adhesion type cladding mechanism includes the autohension enameled wire lacquer layer, the autohension enameled wire lacquer layer sets up conductor structure is last to make wholly conductive wire can be the line cake column structure from rolling up.
Optionally, the conductor structure comprises a single-core copper wire and a PET insulating layer, and the self-adhesion type coating mechanism is arranged on the PET insulating layer.
Optionally, the conductor structure includes a stranded conductor structure, the stranded conductor structure includes insulating layers and conductive line bodies, the number of the conductive line bodies is multiple groups and the conductive line bodies are wound in a bundle-shaped structure, the insulating layers are wrapped on the bundle-shaped structure, and the insulating layers are made of PET materials.
Optionally, the conductive wire further comprises a high-temperature and high-pressure resistant coating mechanism, and the high-temperature and high-pressure resistant coating mechanism is arranged between the self-adhesion type coating mechanism and the conductor structure.
Optionally, the conductive wire further comprises a high-temperature and high-pressure resistant coating mechanism, and the high-temperature and high-pressure resistant coating mechanism is arranged between the self-adhesion type coating mechanism and the insulating layer.
Optionally, the conductive wire further comprises a stable cladding mechanism disposed between the conductor structure and the self-adhesive cladding mechanism; stable form cladding mechanism is used for the insulation to keep apart conductor structure, stable form cladding mechanism includes a plurality of windings the last area body of conductor structure, the area body is followed conductor structure's length direction spiral winding sets up to form a plurality of edges conductor structure's axial direction extends and twines the cover and is in screw thread band circle on conductor structure's the lateral wall, adjacent two the border coincide butt of screw thread band circle sets up the border of screw thread band circle with conductor structure's border contained angle more than or equal to 3 just is less than 180.
Optionally, the conductor structure is a single core copper wire.
Optionally, a high-temperature and high-pressure resistant coating mechanism is arranged between the stable coating mechanism and the self-adhesive coating mechanism.
Optionally, high temperature and high pressure resistant cladding mechanism includes high temperature and high pressure resistant isolation layer, high temperature and high pressure resistant isolation layer is formed by the preparation of teflon material, high temperature and high pressure resistant isolation layer is by polytetrafluoroethylene granule through extruder heating plastify integrated into one piece.
Optionally, the conductive wire includes the high temperature and high pressure resistant isolation layer, the high temperature and high pressure resistant isolation layer sets up conductor structure with between the surrounding layer, the high temperature and high pressure resistant isolation layer is formed by the preparation of teflon material, the high temperature and high pressure resistant isolation layer is heated plastify integrated into one piece by polytetrafluoroethylene granule through the extruder, the cross-section of high temperature and high pressure resistant isolation layer is the setting of loop configuration and cladding on conductor structure's circumference lateral wall.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the electrically conductive wire rod have one of following technological effect at least: compare in the transformer preparation among the prior art need be earlier by artifical rubberizing and the winding wire rod of processing into cake column structure, the practicality is low, influences production efficiency's technical problem, the utility model provides an adopt the electrically conductive wire rod of self-adhesive layer structure can be line cake column structure from rolling up through the adhesion nature of self-adhesive layer to on quick adaptation arrives appointed work piece, for example on wave filter or the transformer, be favorable to optimizing the production step of transformer or wave filter, improve production efficiency.
In order to achieve the above object, an embodiment of the present invention provides a transformer, including the above conductive wire.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the transformer have one of following technological effect at least: because this transformer has adopted foretell electrically conductive wire rod, compare the transformer preparation among the prior art and need be earlier by artifical rubberizing and the winding wire rod of processing into the pie structure, the practicality is low, influences production efficiency's technical problem, the utility model provides an adopt electrically conductive wire rod of self-adhesive layer structure can be the line pie structure from rolling up through the adhesion of self-adhesive layer to on quick adaptation appointed work piece, for example on wave filter or the transformer, be favorable to optimizing the production step of transformer or wave filter, improve production efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural view of a conductive wire according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a conductive wire provided in the second embodiment of the present invention.
Fig. 3 is a schematic structural view of a conductive wire according to a third embodiment of the present invention.
Fig. 4 is a schematic structural view of a conductive wire according to a first embodiment of the present invention and a fourth embodiment of the present invention.
Fig. 5 is a schematic structural view of a conductive wire according to a second embodiment of the present invention.
Fig. 6 is a schematic structural view of a conductive wire according to a third embodiment of the present invention and a fourth embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a stable cladding mechanism according to a fourth embodiment of the present invention.
Fig. 8 is a front view of the stabilized cladding mechanism of fig. 7.
Fig. 9 is an enlarged view of B in fig. 8.
Fig. 10 is a schematic structural view of a conductive wire according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a conductive wire rod adopting another stranded wire form as a conductor structure according to an embodiment of the present invention.
Fig. 12 is a schematic structural view of a conductive wire according to a sixth embodiment of the present invention.
Fig. 13 is a schematic structural view of a conductive wire according to a sixth embodiment of the present invention in combination with the second embodiment of the present invention.
Fig. 14 is a schematic structural view of a conductive wire according to a combination of a sixth embodiment, a fourth embodiment and an embodiment of the present invention.
Fig. 15 is a schematic structural view of a conductive wire according to a sixth embodiment of the present invention, a fourth embodiment of the present invention, and a second embodiment of the present invention.
Fig. 16 is a schematic structural view of a conductive wire in combination of the sixth embodiment, the fourth embodiment and the third embodiment of the present invention.
Fig. 17 is a schematic structural view of the conventional conductive wire according to the fourth embodiment when the conductive wire is wrapped by a 180 ° wrapping angle.
Fig. 18 is a schematic structural diagram of the conventional conductive wire rod provided in the fourth embodiment when the wrapping angle is smaller than 3 °.
Wherein, in the figures, the respective reference numerals:
10-conductor structure 20-high temperature and high pressure resistant coating mechanism 11-insulating layer
12-conductive wire body 30-stable coating mechanism 31-threaded band ring
A, an included angle of 40, a self-adhesion type coating mechanism 13 and a PET insulating layer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-18 are exemplary and intended to be used to illustrate embodiments of the present invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
Example one
In one embodiment of the present invention, as shown in fig. 1, there is provided a conductive wire comprising a conductor structure 10.
The conductor structure 10 comprises a single-core copper wire used for conducting current, wherein the copper wire has better conductivity and low cost, which is beneficial to reducing the production cost of enterprises,
the conductive wire further comprises a high-temperature and high-pressure resistant coating mechanism 20; high temperature and high pressure resistant cladding mechanism 20 sets up on conductor structure 10's the circumference lateral wall, high temperature and high pressure resistant cladding mechanism 20 includes high temperature and high pressure resistant isolation layer, high temperature and high pressure resistant isolation layer is formed by the preparation of indisputable fluorine dragon material, high temperature and high pressure resistant isolation layer is by polytetrafluoroethylene granule through extruder heating plastify integrated into one piece, the cross-section of high temperature and high pressure resistant isolation layer is the setting of loop configuration and cladding on conductor structure 10's the circumference lateral wall.
Specifically, high temperature and high pressure resistant isolation layer is coated on conductor structure 10 by the coating of teflon granule through extruder heating plastify shaping, forms unilateral thickness range in 0.05mm to 0.5mm and the insulating isolation layer of teflon of external diameter thickness range in 0.05mm to 5.0mm, because teflon has the high temperature and high pressure resistant characteristic, directly adopts PET, plastics or gluey material preparation outer insulation system in the wire that compares among the prior art, and high temperature and high pressure resistant effect is poor, damages the technical problem of wire easily, the embodiment of the utility model provides a conductive wire adopts the teflon material as high temperature and high pressure resistant protective layer, has improved the whole high temperature and high pressure resistant performance of wire effectively, prolongs the life of wire, reduces the potential safety hazard, is favorable to the enterprise to develop.
Example two
As shown in fig. 2, the conductor structure 10 includes a stranded wire structure and an insulating layer 11, the stranded wire structure includes a plurality of sets of conductive wire bodies 12, the plurality of sets of conductive wire bodies 12 are wound in a bundle-like structure, the insulation layer 11 is coated on the stranded wire structure, the high-temperature and high-pressure resistant isolation layer is arranged on the outer wall of the insulation layer 11, the insulating layer 11 is made of a PET material, and is bound by a plurality of groups of conductive wire bodies 12 to form the insulating layer, which is beneficial to enhancing the structural strength of the conductor structure 10 and prolonging the service life of the conductor structure 10, and is suitable for special use conditions, such as a cable structure working in a high-temperature environment, in this embodiment, the number of the conductive wire bodies 12 is three, three groups of the conductive wire bodies 12 are spirally wound to form a cable structure, the conductive wire bodies 12 are copper conductive wires, in other embodiments, the number of stranded wire structures is multiple groups of stranded wire structures forming the conductor structure 10 in a bundle structure.
The conductor structure 10 described in this embodiment and the conductor structure 10 described in the first embodiment have different structural shapes, and the rest of the conductor structure is the same as that of the first embodiment.
EXAMPLE III
As shown in fig. 3, there is provided a conductive wire including a conductor structure 10.
The conductor structure 10 includes a stranded wire structure, the stranded wire structure includes a plurality of groups of conductive wire bodies 12, the plurality of groups of conductive wire bodies 12 are wound to be arranged in a bundle-shaped structure, the plurality of groups of conductive wire bodies 12 are bundled to form a cable structure which is favorable for enhancing the structural strength of the conductor structure 10 and prolonging the service life of the conductor structure 10, and the cable structure is suitable for special use conditions, such as working in a high-temperature environment.
The stranded wire structure also comprises a plurality of groups of high-temperature and high-pressure resistant coating mechanisms 20; each high temperature and high pressure resistant cladding mechanism 20 respectively one-to-one sets up on each the circumference lateral wall of conductive line body 12, high temperature and high pressure resistant cladding mechanism 20 includes high temperature and high pressure resistant isolation layer, high temperature and high pressure resistant isolation layer is formed by the preparation of indisputable fluorine dragon material, high temperature and high pressure resistant isolation layer is by polytetrafluoroethylene granule through extruder heating plastify integrated into one piece, the cross-section of high temperature and high pressure resistant isolation layer is the setting of loop configuration and cladding on the circumference lateral wall of conductive line body 12 to form indisputable fluorine dragon stranded conductor, adopt the stranded indisputable fluorine dragon line body hank to become the type, the surface of each line body has indisputable fluorine dragon isolation layer, can save the process of stranded conductor outsourcing insulating layer 11, saves manufacturing cost.
Example four
As shown in fig. 4 to 6, a conductive wire is provided, which includes a conductor structure 10 and a stable covering mechanism 30.
As shown in fig. 7 to 9, in this embodiment, an included angle a between an edge of the threaded band 31 and an edge of the conductor structure 10 is greater than or equal to 3 ° and less than 180 °, and in this embodiment, the included angle a is 45 °; specifically, before the stable wrapping mechanism 30 begins to wrap the conductor structure 10, the conductor structure 10 is vertically disposed at the output end of the external driving device, and the strip is angularly adjusted to obtain a proper inclination angle, as shown in fig. 18, the included angle a1 between the edges is the same as the included angle a, when the included angle a between the strip and the vertical edge of the conductor structure 10 is smaller than 3 °, the strip is approximately parallel to the conductor structure 10, and the threaded band 31 cannot be tightly wrapped on the conductor structure 10; as shown in fig. 17, when the included angle a between the strip and the vertical edge of the conductor structure 10 is equal to 180 °, the strip and the conductor structure 10 are perpendicular to each other, and the strip cannot be wound and formed along the axial direction of the conductor structure 10, but is always wound at the same position; compare the cladding structure poor stability in the winding type wire among the prior art, be unfavorable for the technical problem that the wire used, the embodiment of the utility model provides a coiling area body among the conductive wire material and conductor structure 10's contained angle remain throughout at reasonable angle within range, make outsourcing insulating mechanism's stable in structure, be favorable to improving the structural stability of wire, extension wire life is favorable to the enterprise development.
The angle between the edge of the threaded band 31 and the edge of the conductor structure 10 is shown in fig. 4, and it should be understood by those skilled in the art that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention, such as the complementary and complementary definition of the angle, should be included in the scope of the present invention.
In other embodiments, the stable covering mechanism 30 described in the present embodiment may be used in combination with the above embodiments:
for example, when the present embodiment is combined with the present embodiment, the stable coating mechanism 30 is disposed on the high temperature and high pressure resistant coating mechanism 20; when the present embodiment is combined with the second embodiment, the stable coating mechanism 30 is disposed on the insulating layer 11; when this embodiment is combined with the third embodiment, the stable cladding mechanism 30 is disposed on the conductor structure 10 described in the third embodiment.
EXAMPLE five
As shown in fig. 1 to 6, the number of the belt bodies is one, the belt bodies are made of insulating rubber materials such as PET or plastic materials, and are formed by winding a single belt body, so that cost is saved, the structure is simple, the manufacturing is convenient, and the production efficiency of the lead is improved.
The remaining parts of this embodiment are the same as those of the fourth embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.
EXAMPLE six
As shown in fig. 1 to 6, the conductive wire includes a conductor structure 10 and a self-adhesive coating mechanism 40 for self-adhering the conductive wire integrally into a line cake structure, the self-adhesive coating mechanism 40 is coated on the outer sidewall of the conductor structure 10, the self-adhesive coating mechanism 40 is a self-adhesive wire enamel, and the conductive wire adopting the self-adhesive coating mechanism 40 structure can be self-rolled into a line cake structure through the adhesion of the self-adhesive coating mechanism 40 and is rapidly adapted to a specific workpiece, such as a filter or a transformer, which is beneficial to optimizing the production steps of the transformer or the filter and improving the production efficiency.
In the present embodiment, the conductor structure 10 includes a single-core copper wire and a PET insulating layer 13, and the self-adhesive coating mechanism 40 is disposed on the PET insulating layer 13.
In other embodiments, the conductor structure 10 includes a stranded wire structure, the stranded wire structure includes insulating layers 11 and conductive wire bodies 12, the number of the conductive wire bodies 12 is multiple groups, and the conductive wire bodies are wound in a bundle-like structure, the insulating layers 11 are coated on the bundle-like structure, the insulating layers 11 are made of PET, the number of the conductive wire bodies 12 is preferably three groups, and in other embodiments, the number of the stranded wire structures is multiple groups, and the conductor structure 10 is formed in a bundle-like structure.
In the remaining embodiments, the self-adhesive coating mechanism 40 described in the present embodiment may be used in combination with the above-described embodiments:
for example, when the present embodiment is combined with the embodiment, the self-adhesive coating mechanism 40 is disposed on the high temperature and high pressure resistant coating mechanism 20; when the present embodiment is combined with the second embodiment, the self-adhesive coating mechanism 40 is disposed on the insulating layer 11 described in the second embodiment; when the present embodiment is combined with the third embodiment, the self-adhesive coating mechanism 40 is disposed on the stranded wire structure; when the present embodiment is combined with the fourth embodiment, the self-adhesive coating mechanism 40 is disposed on the stable coating mechanism 30.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a conductive wire rod, is applicable to the transformer which characterized in that: including self-adhesion type cladding mechanism and conductor structure, self-adhesion type cladding mechanism sets up on conductor structure's the lateral wall, self-adhesion type cladding mechanism includes autohension enameled wire layer, autohension enameled wire layer sets up conductor structure is last to make wholly conductive wire rod can be from rolling up and be the line cake column structure.
2. The conductive wire according to claim 1, wherein: the conductor structure comprises a single-core copper wire and a PET (polyethylene terephthalate) insulating layer, and the self-adhesion type coating mechanism is arranged on the PET insulating layer.
3. The conductive wire according to claim 1, wherein: the conductor structure comprises a stranded wire structure, the stranded wire structure comprises insulating layers and conductive wire bodies, the number of the conductive wire bodies is multiple groups, the conductive wire bodies are wound to form a bundle-shaped structure, the insulating layers are wrapped on the bundle-shaped structure, and the insulating layers are made of PET materials.
4. The conductive wire according to claim 1, wherein: the conductive wire further comprises a high-temperature and high-pressure resistant coating mechanism, and the high-temperature and high-pressure resistant coating mechanism is arranged between the self-adhesion type coating mechanism and the conductor structure.
5. The conductive wire according to claim 3, wherein: the conductive wire further comprises a high-temperature and high-pressure resistant coating mechanism, and the high-temperature and high-pressure resistant coating mechanism is arranged between the self-adhesion type coating mechanism and the insulating layer.
6. The conductive wire according to claim 1, wherein: the conductive wire further comprises a stable coating mechanism, and the stable coating mechanism is arranged between the conductor structure and the self-adhesive coating mechanism;
stable form cladding mechanism is used for the insulation to keep apart conductor structure, stable form cladding mechanism includes a plurality of windings the last area body of conductor structure, the area body is followed conductor structure's length direction spiral winding sets up to form a plurality of edges conductor structure's axial direction extends and twines the cover and is in screw thread band circle on conductor structure's the lateral wall, adjacent two the border coincide butt of screw thread band circle sets up the border of screw thread band circle with conductor structure's border contained angle more than or equal to 3 just is less than 180.
7. The conductive wire according to claim 6, wherein: the conductor structure is a single-core copper wire.
8. The conductive wire according to claim 6, wherein: and a high-temperature and high-pressure resistant coating mechanism is arranged between the stable coating mechanism and the self-adhesive coating mechanism.
9. The conductive wire according to any one of claims 4, 5, or 8, wherein: the high-temperature and high-pressure resistant coating mechanism comprises a high-temperature and high-pressure resistant isolation layer, the high-temperature and high-pressure resistant isolation layer is made of Teflon materials, and the high-temperature and high-pressure resistant isolation layer is formed by heating and plasticizing a whole by polytetrafluoroethylene particles through an extruder.
10. A transformer, characterized by: comprising the conductive wire material according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224079.6U CN213815580U (en) | 2020-12-28 | 2020-12-28 | Conductive wire and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023224079.6U CN213815580U (en) | 2020-12-28 | 2020-12-28 | Conductive wire and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213815580U true CN213815580U (en) | 2021-07-27 |
Family
ID=76948613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023224079.6U Expired - Fee Related CN213815580U (en) | 2020-12-28 | 2020-12-28 | Conductive wire and transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213815580U (en) |
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2020
- 2020-12-28 CN CN202023224079.6U patent/CN213815580U/en not_active Expired - Fee Related
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