CN215342100U

CN215342100U - Novel film-covered wire

Info

Publication number: CN215342100U
Application number: CN202121397717.6U
Authority: CN
Inventors: 曹晓飞
Original assignee: Dongguan Jinjieyuan Electronic Material Co ltd
Current assignee: Dongguan Jinjieyuan Electronic Material Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-28
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a novel film-covered wire, which comprises a wire and an insulating film coated on the periphery of the wire, wherein the wire is formed by twisting a plurality of enameled wires; the cross section of the film covered wire is square. According to the utility model, the cross section of the wire is set to be square, compared with the traditional round cross section, the wire has a larger surface area under the same sectional area, and the difference value between the surface current and the central current of the wire can be slowed down in the same variable current of a high-frequency circuit, so that the purpose of effectively reducing the skin effect is achieved, the resistance loss of the wire can be reduced, and the Q value of the circuit and the circuit efficiency are improved; by selecting different insulating film wrapping modes, wires with different flexibilities can be obtained, so that the wires can be matched with wire grooves in different shapes, the circuit space is utilized to the maximum extent, the resistance loss of the wires is reduced, and the Q value can be further improved.

Description

Novel film-covered wire

Technical Field

The utility model relates to the technical field of electromagnetic wires, in particular to a novel film-coated wire.

Background

The electromagnetic wire is widely applied to coils or windings in various electrical products, and mainly takes an enameled wire as a main part. With the continuous development of electronic technology, conventional enameled wires cannot meet the application requirements, and wires formed by various structures are gradually derived, wherein the film-covered wire is one of the structures.

The film covered wire is an electromagnetic wire formed by coating a layer of Mylar film or other material thin films on the surface of an enameled wire, can increase the conductivity and has good insulation effect. In application, the film-covered wire is mostly used in a high-frequency circuit with high requirements on wire materials, but in the high-frequency circuit, the current change rate is very large, so that the current is concentrated on the surface layer of the wire, and the central current of the wire is small, namely the skin effect, so that the resistance of the wire is increased, the power loss is increased, the Q value is reduced, and the efficiency of the high-frequency circuit is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model provides a novel film-covered wire, which has a larger surface area under the same sectional area, can effectively reduce the skin effect, reduce the wire loss in a high-frequency circuit and improve the circuit efficiency.

In order to solve the technical problems, the utility model adopts a technical scheme as follows:

a novel film-covered wire comprises a wire and an insulating film coated on the periphery of the wire, wherein the wire is formed by combining a plurality of strands of enameled wires; the cross section of the film covered wire is square.

As a further elaboration of the above technical solution:

in the technical scheme, the enameled wire is an enameled round copper wire.

In the above technical solution, the insulating film is a polyester imide film.

In the above technical scheme, each strand of the enameled wire comprises a copper core and an insulating sheath covering the periphery of the copper core.

In the above technical solution, the insulation film is wound around the periphery of the wire, and the insulation film of the next circle covers the insulation film of the previous circle, and the area of the insulation film of the previous circle accounts for between 40% and 80% of the total area of the insulation film of the previous circle.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the cross section of the wire is set to be square, compared with the traditional round cross section, the wire has a larger surface area under the same sectional area, and in the same variable current of a high-frequency circuit, the difference value between the surface current and the central current of the wire can be slowed down, so that the purpose of effectively reducing the skin effect is achieved, the resistance loss of the wire can be reduced, and the Q value and the circuit efficiency of the circuit are improved; by selecting different insulating film wrapping modes, wires with different flexibilities can be obtained, so that the wires can be matched with wire grooves in different shapes, the circuit space is utilized to the maximum extent, the resistance loss of the wires is reduced, and the Q value can be further improved.

Drawings

FIG. 1 is a schematic cross-sectional structure of the present invention;

FIG. 2 is a schematic structural diagram according to the first embodiment;

FIG. 3 is a schematic structural view of the second embodiment;

FIG. 4 is a schematic structural diagram of the third embodiment.

In the figure: 1. an insulating film; 2. a wire; 3. enameled wires, 4, copper cores; 5. an insulating sheath.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. 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 present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Example one

As shown in fig. 1, a novel covered wire comprises a conducting wire 2 and an insulating film 1 coated on the periphery of the conducting wire 2, wherein the conducting wire 2 is formed by combining a plurality of strands of enameled wires 3; the cross section of the film covered wire is square.

Compared with the traditional circular section, the square section has larger surface area under the same sectional area, and the difference between the surface current and the central current of the lead 2 can be reduced in the same variable current of the high-frequency circuit, so that the purpose of effectively reducing the skin effect is achieved, the resistance loss of the lead can be reduced, and the Q value of the circuit and the circuit efficiency are improved.

Further, the enameled wire 3 is an enameled round copper wire.

When the utility model is applied, the lead 2 is generally formed by twisting more than three strands of enameled wires 3, and the nominal diameter of the single-stranded enameled wire 3 is between 0.02mm and 0.5mm according to different application occasions.

Further, the insulating film 1 is a polyester imide film; each strand of enameled wire 3 comprises a copper core 4 and an insulating sheath 5 covering the periphery thereof.

The polyester-imide is a high-temperature resistant material, has good flame retardance and excellent mechanical properties, and can provide stable support and protection for the lead 2; an insulating sheath 5 therein may provide insulation and shielding protection for each strand of copper core 4.

Further, the insulation film 1 is wound around the periphery of the wire 2, and the insulation film 1 of the next circle covers between 40% and 80% of the area of the insulation film 1 of the previous circle based on the total area of the insulation film 1 of the previous circle.

The utility model can change the flexibility of the wire by changing the covering mode of the insulating film so as to adapt to the wiring grooves with different curvatures in different circuits, and can change the size of the wire and the shielding performance of the wire.

As shown in fig. 2, in the present embodiment, the insulation film 1 is wound around the periphery of the lead 2, and the insulation film 1 of the next turn covers 50% of the total area of the insulation film 1 of the previous turn, i.e. the film of the second turn covers 1/2 of the area of the film of the first turn. The film covered wire has moderate flexibility, hardness and shielding effect, can be arranged in a bent wiring groove, has relatively low wire cost and is suitable for common high-frequency circuits.

Example two

As shown in fig. 3, in the first embodiment, the insulation film 1 is wound around the periphery of the lead 2, and the insulation film 1 of the next circle covers 67% of the total area of the insulation film 1 of the previous circle, i.e. the insulation film 1 of the previous circle covers 2/3% of the area of the first circle. The film-covered wire is more tightly wound, the film thickness is increased to some extent, the hardness of the wire is improved, the flexibility is reduced, the shielding effect is improved, and the film-covered wire can be applied to a stable high-frequency circuit.

EXAMPLE III

As shown in fig. 4, in the first embodiment, the insulation film 1 is wound around the periphery of the lead 2, and the insulation film 1 of the next circle covers 75% of the total area of the insulation film 1 of the previous circle, i.e. the insulation film 1 of the previous circle covers 3/4% of the area of the first circle. The film-covered wire has high hardness, low flexibility and excellent shielding performance, and can be applied to high-frequency circuits with higher requirements.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A novel film-covered wire comprises a wire and an insulating film coated on the periphery of the wire, and is characterized in that the wire is formed by combining a plurality of strands of enameled wires; the cross section of the film covered wire is square.

2. The novel film-covered wire according to claim 1, wherein the enameled wire is an enameled round copper wire.

3. A novel film covered wire as claimed in claim 1, wherein said insulating film is a polyester imide film.

4. A novel wire covering according to claim 1, wherein each of said enamel wires comprises a copper core and a sheath covering the periphery thereof.

5. The novel covered wire according to claim 1, 2, 3 or 4, wherein the insulation film is wound around the periphery of the conducting wire, and the area of the insulation film in the former circle is covered by the insulation film in the latter circle, which accounts for 40% to 80% of the total area of the insulation film in the former circle.