CN104200942A - High-voltage-resistance metal shell power resistor - Google Patents
High-voltage-resistance metal shell power resistor Download PDFInfo
- Publication number
- CN104200942A CN104200942A CN201410362456.2A CN201410362456A CN104200942A CN 104200942 A CN104200942 A CN 104200942A CN 201410362456 A CN201410362456 A CN 201410362456A CN 104200942 A CN104200942 A CN 104200942A
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- metal shell
- mica paper
- voltage
- power resistor
- resistance
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Abstract
The invention discloses a high-voltage-resistance metal shell power resistor. The high-voltage-resistance metal shell power resistor comprises a metal shell, a framework, alloy wires and leads, wherein the alloy wires wind the framework to form a resistance core. The high-voltage-resistance metal shell power resistor is characterized in that mica paper warps the outer part of the resistance core, so as to completely seal the alloy wires in the mica paper. According to the high-voltage-resistance metal shell power resistor, a method of paving the mica paper in the metal shell in the prior art is replaced by a method of warping the outer part of the resistance core with the mica paper having the characteristics of good flexibility and certain tensile strength at room temperature is utilized, after the improvement, the alloy wires are completely sealed in the mica paper, and no air can permeate into the mica paper, so that the voltage resistance is improved; compared with existing resistors insulated by mica boards, the voltage resistance of the high-voltage-resistance metal shell power resistor can be remarkably improved.
Description
Technical field
The present invention relates to electronic devices and components field, particularly a kind of high withstand voltage metal shell power resistor.
Background technology
Metal shell power resistor is a kind of novel small size, Power Resistor.The metal shell of this product is arranged on and in the frame of electronic equipment, helps heat radiation, because the traditional handicraft of this product is to utilize micarex as the insulating material between resistor housing and resistor core, resistor core can not be insulated material and seal completely, gap place leaves air, voltage height easy to be breakdown, therefore, existing metal shell power resistor dielectric voltage withstand is generally at 1KV～1.5KV.
Along with the expansion of this product applications, user proposes requirement more than dielectric voltage withstand 3KV, this substantially cannot realize for existing structure and technique, the metal shell power resistor of existing structure can only improve dielectric voltage withstand by the thickness that strengthens insulating mica plate, but the micarex of resistor core side pad is cannot be by complete resistor core totally enclosed, how much all can produce certain gap, when voltage reaches 2KV at most, resistor will be breakdown because of the air in gap, and product dielectric voltage withstand consistency is affected.So present stage is badly in need of wanting a kind of high withstand voltage metal shell power resistor to replace traditional common withstand voltage metal shell power resistor, through extensively retrieval, not yet find comparatively desirable technical scheme.
Summary of the invention
The invention provides a kind of high withstand voltage metal shell power resistor, its object is to solve the lower problem of existing metal shell power resistor withstand voltage properties,
The object of the invention is to be achieved by the following technical programs, high withstand voltage metal shell power resistor, comprise metal shell, skeleton, B alloy wire and lead-in wire, described B alloy wire is wrapped on described skeleton and forms resistor core, it is characterized in that, at the outer wrap mica paper of described resistor core, B alloy wire is completely enclosed within mica paper.
At the more than three layers mica paper of outer wrap of described resistor core, the thickness of described mica paper is 0.15mm.
For preventing resistor core play in mica paper, the internal layer of described mica paper is bonded on described skeleton, and for preventing that resistor core from rocking in metal shell, the skin of described mica paper is bonded on the inwall of described shell.
The present invention utilizes mica paper to have at normal temperatures the feature of good flexibility and certain hot strength, the outside that adopts mica paper to be wrapped in resistor core replaces prior art micarex to be laid in metal shell, after improvement, B alloy wire is completely enclosed within mica paper, can not enter by infiltrated air, to improve its withstand voltage properties, compared with the resistor of existing employing micarex insulation, withstand voltage properties significantly improves.
Brief description of the drawings
Fig. 1 is the structural representation of inventive embodiments.
Embodiment
As shown in Figure 1, high withstand voltage metal shell power resistor provided by the present invention, comprise metal shell 1, skeleton 2, B alloy wire 3 and lead-in wire 4, described B alloy wire 3 is wrapped on described skeleton 2 and forms resistor core, the mica paper 5 that is 0.15mm at the outer wrap threeply degree of described resistor core, B alloy wire is completely enclosed within mica paper, selects the mica paper of different-thickness and need the number of plies of parcel according to the requirement of withstand voltage of resistance.For preventing resistor core play in mica paper, the internal layer of described mica paper adopts silica gel to be bonded on described skeleton, and for preventing that resistor core from rocking in metal shell, the skin of described mica paper adopts silica gel to be bonded on the inwall of described shell.Because mica paper has good flexibility and certain hot strength at normal temperatures, be wrapped in the outside of resistor core, B alloy wire is completely enclosed within mica paper, can not enter by infiltrated air, withstand voltage properties significantly improves.The present embodiment product is through 60 minutes voltage-withstand tests of 3.5KV voltage, and test result shows that product is normally intact.
Above-described embodiment is only preferred embodiments of the present invention; describe technical conceive of the present invention and essential implementation in detail; not that protection scope of the present invention is limited; all any simple modification that Spirit Essence is done according to the present invention and equivalent structure transformation or modification, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. high withstand voltage metal shell power resistor, comprises metal shell, skeleton, B alloy wire and lead-in wire, described B alloy wire is wrapped on described skeleton and forms resistor core, it is characterized in that, at the outer wrap mica paper of described resistor core, B alloy wire is completely enclosed within mica paper.
2. high withstand voltage metal shell power resistor according to claim 1, is characterized in that, at the more than three layers mica paper of outer wrap of described resistor core, the thickness of described mica paper is 0.15mm.
3. high withstand voltage metal shell power resistor according to claim 1 and 2, is characterized in that, the internal layer of described mica paper is bonded on described skeleton, and the skin of described mica paper is bonded on the inwall of described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362456.2A CN104200942A (en) | 2014-07-28 | 2014-07-28 | High-voltage-resistance metal shell power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362456.2A CN104200942A (en) | 2014-07-28 | 2014-07-28 | High-voltage-resistance metal shell power resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104200942A true CN104200942A (en) | 2014-12-10 |
Family
ID=52086218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410362456.2A Pending CN104200942A (en) | 2014-07-28 | 2014-07-28 | High-voltage-resistance metal shell power resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104200942A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6604385U (en) * | 1967-07-24 | 1970-01-15 | Langley London Ltd | PLATE-SHAPED ELECTRIC RESISTORS |
| CN102446605A (en) * | 2010-10-11 | 2012-05-09 | 上海克拉电子有限公司 | Flat aluminum alloy shell resistor |
| CN202602927U (en) * | 2012-03-15 | 2012-12-12 | 许键梁 | Energy-saving electric heating plate capable of conducting heat directly |
| CN204130288U (en) * | 2014-07-28 | 2015-01-28 | 安徽来福电子科技有限公司 | High withstand voltage metal shell power resistor |
-
2014
- 2014-07-28 CN CN201410362456.2A patent/CN104200942A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6604385U (en) * | 1967-07-24 | 1970-01-15 | Langley London Ltd | PLATE-SHAPED ELECTRIC RESISTORS |
| CN102446605A (en) * | 2010-10-11 | 2012-05-09 | 上海克拉电子有限公司 | Flat aluminum alloy shell resistor |
| CN202602927U (en) * | 2012-03-15 | 2012-12-12 | 许键梁 | Energy-saving electric heating plate capable of conducting heat directly |
| CN204130288U (en) * | 2014-07-28 | 2015-01-28 | 安徽来福电子科技有限公司 | High withstand voltage metal shell power resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |