CN201717026U - Stranded three-layer insulated wire - Google Patents
Stranded three-layer insulated wire Download PDFInfo
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- CN201717026U CN201717026U CN201020193587XU CN201020193587U CN201717026U CN 201717026 U CN201717026 U CN 201717026U CN 201020193587X U CN201020193587X U CN 201020193587XU CN 201020193587 U CN201020193587 U CN 201020193587U CN 201717026 U CN201717026 U CN 201717026U
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Abstract
The utility model discloses a stranded three-layer insulated wire and is characterized in that the stranded three-layer insulated wire comprises a stranded wire formed by stranding at least seven enameled wires (1) and three insulating layers arranged on the surface of the stranded wire; and two insulating layers are arranged on the surface of a copper wire (5) of each enameled wire (1), the base insulating layer adopts a direct-welding polyester-imide paint layer (6), and the outer insulating layers adopts a polyimide paint layer (7). Each enameled wire is coated with two layers of insulating paint, so that each enameled wire has the insulation property, and the stranded wire formed by stranding at least seven enameled wires is coated with the three insulating layers. Therefore, the stranded three-layer insulated wire is directly applied to the production of electronic transformers, omits the use of insulating tape or barrier grid between the layers and greatly reduces the volume and the weight. Compared with the prior electronic transformer, the volume and the weight are reduced by 1/2 and 1/3 respectively; and the material cost and the processing cost are also reduced. With the three insulating resin layers, the stranded three-layer insulated wire has the characteristics of higher insulation voltage and stronger wear resistance and avoids the phenomenon of pinholes.
Description
Technical field
The utility model relates to a kind of copper-clad twisted wire, particularly a kind of stranded type three layer insulation wire.
Background technology
Along with world's electronic transformer Technical Development Objective to light weight, efficient, high density, chip type development, the electronic transformer industry of China has experienced the update of three levels: first level is the innovation of three-dimensional transformer (being traditional common transformer) to planar transformer; It is the batch process of chip transformer that second level upgrades, and chip transformer generally adopts a plurality of magnetic cores of elementary winding to replace traditional a plurality of elementary windings of a magnetic core; It is the Development and design success of film transformer that tri-layer upgrades.
Above-mentioned any electronic transformer, domestic still at the traditional enamelled wire of employing, this traditional enamelled wire is the composite enameled wire of two coatings or three coatings, but when making electronic transformer,, between 1 coil and 2 coils, must insert the heavy insulation material because of the enamel-cover layer does not possess insulating capacity for this reason, cannot save the insulating tape or the barrier grid of interlayer, cause the volume of electronic transformer bigger, quality is heavier, and production cost is higher.
The utility model content
The purpose of this utility model is, a kind of stranded type three layer insulation wire is provided.The utility model can make that the small product size of production is less, lighter weight and production cost are lower.
The technical solution of the utility model: a kind of stranded type three layer insulation wire comprises that by at least 7 stranded twisted wires that form of enamel-cover single line the twisted wire surface is provided with three-layer insulated layer; The copper line surface of described enamel-cover single line is provided with dielectric layers, and bottom is straight weldering property polyester-imide enamelled coating, and skin is the polyimides enamelled coating.
In the aforesaid stranded type three layer insulation wire, described three-layer insulated layer, bottom is the polyester imine resin layer, and the middle level is a heat-resistant resin layer, and skin is the polyamide layer.
Compared with prior art, the utility model makes the enamel-cover single line have insulating properties by at enamel-cover single line applied in two coats insulating varnish, coats three-layer insulated layer again on by at least 7 stranded twisted wires that form of enamel-cover single line, can be directly used in the production electronic transformer, saved the insulating tape and the barrier grid of interlayer, reduced volume and weight significantly, compared with traditional electronic transformer, volume reduces 1/2, weight reduces 1/3, has also reduced fee of material and processing charges, makes production cost reduce; By being provided with three-layer insulated resin bed, making characteristics, and the pin hole phenomenon can not occur with very high insulation voltage and stronger resistance to wear.The utility model can make that the small product size of production is less, lighter weight and production cost are lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of enamel-cover single line.
Being labeled as in the accompanying drawing: 1-enamel-cover single line, 2-polyester imine resin layer, the 3-heat-resistant resin layer, 4-polyamide layer, 5-copper cash, 6-be weldering property polyester-imide enamelled coating directly, 7-polyimides enamelled coating.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of stranded type three layer insulation wire constitutes as illustrated in fig. 1 and 2, comprises by at least 7 enamel-cover single lines 1 stranded twisted wire that forms, and the twisted wire surface is provided with three-layer insulated layer; Copper cash 5 surfaces of described enamel-cover single line 1 are provided with dielectric layers, and bottom is straight weldering property polyester-imide enamelled coating 6, and skin is a polyimides enamelled coating 7; Described three-layer insulated layer, bottom is a polyester imine resin layer 2, and the middle level is a heat-resistant resin layer 3, and skin is a polyamide layer 4.
Claims (2)
1. a stranded type three layer insulation wire is characterized in that: comprise that by the stranded twisted wire that forms of at least 7 enamel-cover single lines (1) the twisted wire surface is provided with three-layer insulated layer; Copper cash (5) surface of described enamel-cover single line (1) is provided with dielectric layers, and bottom is straight weldering property polyester-imide enamelled coating (6), and skin is polyimides enamelled coating (7).
2. stranded type three layer insulation wire according to claim 1 is characterized in that: described three-layer insulated layer, and bottom is polyester imine resin layer (2), and the middle level is heat-resistant resin layer (3), and skin is polyamide layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020193587XU CN201717026U (en) | 2010-05-18 | 2010-05-18 | Stranded three-layer insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020193587XU CN201717026U (en) | 2010-05-18 | 2010-05-18 | Stranded three-layer insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717026U true CN201717026U (en) | 2011-01-19 |
Family
ID=43463033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020193587XU Expired - Fee Related CN201717026U (en) | 2010-05-18 | 2010-05-18 | Stranded three-layer insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275042A (en) * | 2017-05-08 | 2017-10-20 | 长沙广义变流技术有限公司 | A kind of pressure-resistant isolating transformer of high frequency height insulation |
-
2010
- 2010-05-18 CN CN201020193587XU patent/CN201717026U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275042A (en) * | 2017-05-08 | 2017-10-20 | 长沙广义变流技术有限公司 | A kind of pressure-resistant isolating transformer of high frequency height insulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CHANGCHENG ELECTRICAL TECHNOLOGY CO., LTD Free format text: FORMER NAME: ZHEJIANG GRANDWALL ELECTRICAL TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 313013, No. 1, east the Great Wall Avenue, Nanxun District, Zhejiang, Huzhou Patentee after: Zhejiang Greatwall Electronic Engineering Science & Technology Co., Ltd. Address before: 313013, No. 1, east the Great Wall Avenue, Nanxun District, Zhejiang, Huzhou Patentee before: Zhejiang Grandwall Electrical Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20150518 |
|
| EXPY | Termination of patent right or utility model |