CN104051091A - Excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor - Google Patents
Excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor Download PDFInfo
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- CN104051091A CN104051091A CN201410306640.5A CN201410306640A CN104051091A CN 104051091 A CN104051091 A CN 104051091A CN 201410306640 A CN201410306640 A CN 201410306640A CN 104051091 A CN104051091 A CN 104051091A
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Abstract
The invention discloses an excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor. The excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor comprises a mandril, wherein a resistance wire is wound on the mandril, two ends of the resistance wire are respectively connected with a section of conducting wire, the mandril and the resistance wire on the mandril are wrapped by a flame-retardant layer, the flame-retardant layer comprises an inner fusing assistant layer, an intermediate obstruction temperature-suppression layer and an outer insulation paint layer. According to the technical scheme, the fusing point of the resistance wire can be reduced through the fusing assistant layer, and the heat is concentrated onto the resistance wire through the obstruction temperature-suppression layer, so that when an excessively low current (1.2 to 2 times of rated current of the resistor) occurs in the excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor, the fusing of the resistance wire can be accelerated, and the potential safety hazard caused by the burning of a plastic element can be prevented. The excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor also has an excessively-low-current protection function and a lightning stroke surge resisting function.
Description
Technical field
The present invention relates to fusing resistor, relate in particular to a kind of too little current protection anti-lightning surge wirewound resistor.
Background technology
At present existing a kind of anti-lightning surging line comprises plug around resistor, is wound with resistance wire on plug, and the two ends of resistance wire are connected with respectively a section lead, plug and on the outer wrap of resistance wire have flame-retardant layer.This anti-lightning surge wirewound resistor cannot meet the requirement of too little current protection, to meet anti-lightning surge impact for the requirement of the wirewound resistor of electronic product charger before, under current state, (be mainly rectifier diode and the filter capacitor short circuit of power unit simultaneously, the more than 50 times of its rated value by the electric current of wirewound resistor), wirewound resistor can disconnect at the appointed time, but in the time there is too little current (1.2～2 times of rated current of wirewound resistor) in circuit, the striking point that temperature does not reach resistance wire causes wirewound resistor to fuse in time, resistance there will be persistent fever phenomenon, resistive surface temperature exceedes 600 DEG C, heating can be burnt working of plastics (charger case) for a long time, bring serious potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of wirewound resistor simultaneously with too little current protection and anti-lightning surge.
In order to solve the problems of the technologies described above; the present invention adopts following technical scheme: a kind of too little current protection anti-lightning surge wirewound resistor; it comprises plug; on plug, be wound with resistance wire; the two ends of resistance wire are connected with respectively a section lead; plug and on the outer wrap of resistance wire have flame-retardant layer, described flame-retardant layer comprises that the disconnected agent layer of fluxing of internal layer, middle obstruct press down temperature layer and outer field insulation enamelled coating.
From technique scheme; the disconnected agent layer of fluxing can reduce the striking point of resistance wire; obstruct simultaneously presses down temperature layer and heat can be concentrated on resistance wire; like this in the time there is too little current (1.2～2 times of rated current of this resistor) in too small current protection anti-lightning surge wirewound resistor circuit; fusing that can fasting resistance silk, prevents from burning working of plastics and brings potential safety hazard.Therefore too little current protection anti-lightning surge wirewound resistor provided by the invention has the function of too little current protection and anti-lightning surge simultaneously.
As improvement of the present invention, the two ends of described plug are overlapped respectively a cap, and the two ends of resistance wire are connected with a cap respectively, and one end of wire is connected with cap, cap, plug and on the outer wrap of resistance wire have flame-retardant layer.This connected mode is more stable and convenient.
As a further improvement on the present invention, resistance wire is greater than the winding density near two ends place in the winding density at plug middle part.The resistance wire heating at plug middle part is more concentrated, the further fusing speed of fasting resistance silk.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Referring to Fig. 1.
Too little current protection anti-lightning surge wirewound resistor, it comprises plug 1, on plug 1, be wound with resistance wire 2, the two ends of plug 1 are overlapped respectively a cap 31, 32, one end of resistance wire 2 is connected with cap 31, the other end of resistance wire 2 is connected with cap 32, on cap 31, be connected with a section lead 41, on cap 32, be connected with a section lead 42, resistance wire 2 is greater than the winding density near two ends place in the winding density at plug 1 middle part, at cap 31, cap 32, plug 1 and on the outer wrap of resistance wire 2 have flame-retardant layer, described flame-retardant layer comprises the disconnected agent layer 51 of fluxing of internal layer, middle obstruct presses down temperature layer 52 and outer field insulation enamelled coating 53.
Described cap 31,32 can conduct electricity, and the disconnected agent layer 51 of fluxing adopts and contains the disconnected agent coating material of fluxing of low-melting-point metal (Ying, antimony), and obstruct presses down temperature layer 52 and adopts expanded material or amosite asbestos material, and the enamelled coating 53 that insulate adopts silicone resin material.
To the experiment that fuse of above-mentioned too little current protection anti-lightning surge wirewound resistor, while testing 1.2～2 times that to show when the electric current by this resistor be its rated current, resistance wire can fuse in 60s, and surface temperature is no more than 400 degree.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a too little current protection anti-lightning surge wirewound resistor; it comprises plug; on plug, be wound with resistance wire; the two ends of resistance wire are connected with respectively a section lead; plug and on the outer wrap of resistance wire have flame-retardant layer, it is characterized in that: described flame-retardant layer comprises that the disconnected agent layer of fluxing of internal layer, middle obstruct press down temperature layer and outer field insulation enamelled coating.
2. too little current protection anti-lightning surge wirewound resistor as claimed in claim 1; it is characterized in that: the two ends of plug are overlapped respectively a cap; the two ends of resistance wire are connected with a cap respectively; one end of wire is connected with cap, cap, plug and on the outer wrap of resistance wire have flame-retardant layer.
3. too little current protection anti-lightning surge wirewound resistor as claimed in claim 1 or 2, is characterized in that: resistance wire is greater than the winding density near two ends place in the winding density at plug middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306640.5A CN104051091A (en) | 2014-06-28 | 2014-06-28 | Excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410306640.5A CN104051091A (en) | 2014-06-28 | 2014-06-28 | Excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104051091A true CN104051091A (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410306640.5A Pending CN104051091A (en) | 2014-06-28 | 2014-06-28 | Excessively-low-current protection lightning-stroke-resisting surge wire-wound resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104051091A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519882A (en) * | 2016-11-09 | 2017-03-22 | 天津大学 | Preparation and coating method of fusing agent for wire-wound fusible resistor |
| WO2019000306A1 (en) * | 2017-06-29 | 2019-01-03 | Lee Shang Yo | Anti-surge wire wound low temperature fuse resistor and manufacturing method thereof |
-
2014
- 2014-06-28 CN CN201410306640.5A patent/CN104051091A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106519882A (en) * | 2016-11-09 | 2017-03-22 | 天津大学 | Preparation and coating method of fusing agent for wire-wound fusible resistor |
| WO2019000306A1 (en) * | 2017-06-29 | 2019-01-03 | Lee Shang Yo | Anti-surge wire wound low temperature fuse resistor and manufacturing method thereof |
| CN110622260A (en) * | 2017-06-29 | 2019-12-27 | 李尚佑 | Anti-surge winding low-temperature fusing resistor and manufacturing method thereof |
| CN110622260B (en) * | 2017-06-29 | 2021-10-22 | 李尚佑 | Anti-surge winding low-temperature fusing resistor and manufacturing method thereof |
| CN110622260B8 (en) * | 2017-06-29 | 2021-11-26 | 李尚祐 | Anti-surge winding low-temperature fusing resistor and manufacturing method thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 233010 Bengbu high tech Zone, Anhui Hing Road, No. 818 Applicant after: Bengbu double ring inductance Limited by Share Ltd Address before: 233010 Bengbu high tech Zone, Anhui Hing Road, No. 818 Applicant before: Anhui Changsheng Electronics Co., Ltd. |
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| COR | Change of bibliographic data | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160629 Address after: 233010 No. 88 Changzheng South Road, Bengbu hi tech Zone, Anhui Applicant after: Anhui Changsheng Electronic Co., Ltd. Address before: 233010 Bengbu high tech Zone, Anhui Hing Road, No. 818 Applicant before: Bengbu double ring inductance Limited by Share Ltd |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140917 |