CN204130288U - High withstand voltage metal shell power resistor - Google Patents
High withstand voltage metal shell power resistor Download PDFInfo
- Publication number
- CN204130288U CN204130288U CN201420418546.4U CN201420418546U CN204130288U CN 204130288 U CN204130288 U CN 204130288U CN 201420418546 U CN201420418546 U CN 201420418546U CN 204130288 U CN204130288 U CN 204130288U
- Authority
- CN
- China
- Prior art keywords
- mica paper
- metal shell
- resistor
- withstand voltage
- alloy wire
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of 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, make B alloy wire be completely enclosed within mica paper; The utility model utilizes mica paper to have the feature of good flexibility and certain hot strength at normal temperatures, mica paper is adopted to be wrapped in the outside of resistor core, prior art micarex is replaced to be laid in metal shell, after improvement, make B alloy wire be completely enclosed within mica paper, can not enter by infiltrated air, to improve its withstand voltage properties, compared with the resistor insulated with existing employing micarex, withstand voltage properties significantly improves.
Description
Technical field
The utility model 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 frame that the metal shell of this product is arranged on electronic equipment helps heat radiation, traditional handicraft due to this product utilizes micarex as the insulating material between resistor housing and resistor core, resistor core can not be sealed completely by insulating material, gap place leaves air, voltage is high 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 the requirement of 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 strengthening insulating mica plate, but the micarex of resistor core side pad is cannot by complete for resistor core totally enclosed, how much all can produce certain gap, when voltage reaches at most 2KV, 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 pressure tight metal shell power resistor, through extensively retrieving, not yet find ideal technical scheme.
Utility model content
The utility model 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 purpose of this utility model is 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 outer wrap more than three layers mica paper 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 resistor core from rocking in metal shell, the skin of described mica paper is bonded on the inwall of described shell.
The utility model utilizes mica paper to have the feature of good flexibility and certain hot strength at normal temperatures, the outside adopting mica paper to be wrapped in resistor core is laid in metal shell to replace prior art micarex, after improvement, B alloy wire is made to be completely enclosed within mica paper, can not enter by infiltrated air, to improve its withstand voltage properties, compared with the resistor insulated with existing employing micarex, withstand voltage properties significantly improves.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1, high withstand voltage metal shell power resistor provided by the utility model, 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, is the mica paper 5 of 0.15mm at the outer wrap threeply degree of described resistor core, make B alloy wire be completely enclosed within mica paper, select the mica paper of different-thickness according to the requirement of withstand voltage of resistance and need the number of plies of parcel.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 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, make B alloy wire be completely enclosed within mica paper, can not enter by infiltrated air, withstand voltage properties significantly improves.The present embodiment product is through 3.5KV voltage 60 minutes voltage-withstand tests, and test result display product is normally intact.
Above-described embodiment is only better embodiment of the present utility model; describe technical conceive of the present utility model and essential implementation in detail; not that protection range of the present utility model is limited; all any simple modification of doing according to the utility model Spirit Essence and equivalent structure transformation or modification, all should be encompassed within protection range of the present utility model.
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 outer wrap more than three layers mica paper 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 |
|---|---|---|---|
| CN201420418546.4U CN204130288U (en) | 2014-07-28 | 2014-07-28 | High withstand voltage metal shell power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418546.4U CN204130288U (en) | 2014-07-28 | 2014-07-28 | High withstand voltage metal shell power resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204130288U true CN204130288U (en) | 2015-01-28 |
Family
ID=52386619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420418546.4U Expired - Fee Related CN204130288U (en) | 2014-07-28 | 2014-07-28 | High withstand voltage metal shell power resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204130288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200942A (en) * | 2014-07-28 | 2014-12-10 | 安徽来福电子科技有限公司 | High-voltage-resistance metal shell power resistor |
-
2014
- 2014-07-28 CN CN201420418546.4U patent/CN204130288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200942A (en) * | 2014-07-28 | 2014-12-10 | 安徽来福电子科技有限公司 | High-voltage-resistance metal shell power resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |