CN204332880U - A kind of big current alloy-type temperature fuse of resistance to surge - Google Patents
A kind of big current alloy-type temperature fuse of resistance to surge Download PDFInfo
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- CN204332880U CN204332880U CN201420834051.XU CN201420834051U CN204332880U CN 204332880 U CN204332880 U CN 204332880U CN 201420834051 U CN201420834051 U CN 201420834051U CN 204332880 U CN204332880 U CN 204332880U
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Abstract
The utility model relates to a kind of big current alloy-type temperature fuse of resistance to surge, comprise plastic casing, first pin and the second pin, described plastic casing inside is filled with disconnected agent of fluxing, the oral area of plastic casing is sealed with and seals resin accordingly, both sides bottom described plastic casing are respectively equipped with a pin installation cavity, the root of described first pin and the second pin is installed in corresponding pin installation cavity respectively, be connected with a sheet of square thermal sensitive piece between described first pin and the second pin, it is inner that described square thermal sensitive piece is installed on described plastic casing.The utility model in use, has superior stability and accuracy, can carry out action reliably; Can not occur because of product self problem in its use procedure disconnecting in advance, the situation of premature failure.
Description
Technical field
The utility model relates to a kind of Thermal Cutoffs, specifically refers to a kind of big current alloy-type temperature fuse of resistance to surge.
Background technology
Connect work one section of fusible alloy silk between the two pins of alloy-type temperature fuse, adopt the coated fusible alloy silk of disconnected agent of fluxing.Electric current flows to another root pin from a pin, when Thermal Cutoffs environment temperature rises to its operating temperature, fusible alloy fusing also, under surface tension effects and under disconnected agent help of fluxing, is shrunk to and is spherically attached to two pins end, thus cuts off circuit.
The rated current of existing alloy-type temperature fuse is less, and its maximum discharge capacity is limited, is usually less than the maximum surge current tolerance of lightning protection device.Having large surge impact to come temporarily, alloy-type temperature fuse will will disconnect in advance because of the impact of bearing incessantly larger surge current, inhibits the surge absoption ability of lightning protection device, therefore cannot realize the normal surging prevention to place system.If the enlarged diameter of fusible alloy silk, because its contact area is little, volume is comparatively large, and the alloy that will add fusing shrinks the difficulty of balling-up under disconnected agent of fluxing helps, and even can cause Thermal Cutoffs cannot action message, cannot open circuit smoothly.Thermal Cutoffs is safety device, can action message be one of its topmost parameter, for solving the problem of big current Thermal Cutoffs energy action message, application number is: the utility model patent " a kind of alloy-type temperature fuse of high peace times capacity " of CN200920149511.4, it is by taking the method for many B alloy wire parallel connections, high peace times capacity can either be realized, can respond rapidly overheated and disconnect again.But in actual use, as passed to the electric current of 40A, above-mentioned patented product has 4 B alloy wires, every root is by the electric current of 10A in theory.But in fact, due to the problem of manufacturing process, the size possibility of every root B alloy wire cannot be just the same, shape also may difference to some extent, so the electric current of some B alloy wire may be greater than 10A, its caloric value can be bigger than normal, and these B alloy wires may fuse in advance, and whole product also has the risk disconnected in advance.Particularly when this products application is in the circuit having larger surge current, this kind of phenomenon can be amplified, and accelerates the possibility of this kind of product failure.Meanwhile, because the requirement of its manufacturing process is high, its production efficiency just can decrease, and production cost then can rise thereupon.
Summary of the invention
For above-mentioned prior art Problems existing, the utility model is to provide a kind of big current alloy-type temperature fuse of resistance to surge, by fusible alloy silk is arranged to square sheet, efficiently solves the problem disconnecting in advance, lost efficacy that product may occur.
The technical scheme that the utility model provides is as follows:
A kind of big current alloy-type temperature fuse of resistance to surge, comprise plastic casing, first pin and the second pin, described plastic casing inside is filled with disconnected agent of fluxing, the oral area of plastic casing is sealed with and seals resin accordingly, both sides bottom described plastic casing are respectively equipped with a pin installation cavity, the root of described first pin and the second pin is installed in corresponding pin installation cavity respectively, be connected with a sheet of square thermal sensitive piece between described first pin and the second pin, it is inner that described square thermal sensitive piece is installed on described plastic casing.
The cross section of described first pin and the second pin is the one in circle, triangle, square or ellipse.
The cross section of described square thermal sensitive piece be square, with the one in the square of inner groovy or ellipse.
Advantage of the present utility model:
The utility model in use, has superior stability and accuracy, can carry out action reliably; Can not occur because of product self problem in its use procedure disconnecting in advance, the situation of premature failure; The utility model also has the advantage on producing that manufactures, and its production efficiency is high, and conforming product rate is high, and production cost is low.
The utility model is respectively equipped with a pin installation cavity by the both sides bottom plastic casing, is installed on respectively in corresponding pin installation cavity by the root of the first pin and the second pin, thus ensures that this product has safe electric clearance and insulation distance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of preferred embodiment of the present utility model:
With reference to figure 1, a kind of big current alloy-type temperature fuse of resistance to surge, comprise plastic casing 1, first pin 2 and the second pin 3, described plastic casing 1 inside is filled with disconnected agent 4 of fluxing, the oral area of plastic casing 1 is sealed with corresponding sealing resin 5, both sides bottom described plastic casing 1 are respectively equipped with a pin installation cavity 11, the root of described first pin 2 and the second pin 3 is installed in corresponding pin installation cavity 11 respectively, a sheet of square thermal sensitive piece 6 is connected with between described first pin 2 and the second pin 3, it is inner that described square thermal sensitive piece 6 is installed on described plastic casing 1.The cross section of described first pin 2 and the second pin 3 is circular.The cross section of described square thermal sensitive piece is square.
Welding procedure is used to be connected to by the square thermal sensitive piece 6 of sheet on the first pin 2 and the second pin 3; and among the encirclement being placed on disconnected agent 4 of fluxing; disconnected agent 4 of fluxing is conducive to square thermal sensitive piece 6 and melts after-contraction; and can square thermal sensitive piece 6 be made to shrink to two pins electrode quick and completely; balling-up is shunk at electrode pin place; thus in the operating temperature range of Thermal Cutoffs setting, it is peeled off from circuit, play the object of overheat protector.Make product can not only bear higher operating current, the occasion that operating current is higher can be applied to, and action can be carried out reliably.
The root that both sides bottom plastic casing 1 are respectively equipped with a pin installation cavity 11, first pin 2 and the second pin 3 is installed in corresponding pin installation cavity respectively, thus ensures that this product has safe electric clearance and insulation distance.Empirical tests, this big current type of resistance to surge Thermal Cutoffs can bear the lightning impulse current of 60KA 8/20us, even can bear the impulse current of 100KA 8/20us; The lightning impulse voltage of 1.2/50 6KV can be born.So it can apply to the overheat protector of surge protective device, easily there is the overheat protector of the equipment such as larger overvoltage, overcurrent as Switching Power Supply, linear power supply, storage battery etc.
Above are only a specific embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (3)
1. the big current alloy-type temperature fuse of resistance to surge, comprise plastic casing, first pin and the second pin, described plastic casing inside is filled with disconnected agent of fluxing, the oral area of plastic casing is sealed with and seals resin accordingly, it is characterized in that: the both sides bottom described plastic casing are respectively equipped with a pin installation cavity, the root of described first pin and the second pin is installed in corresponding pin installation cavity respectively, be connected with a sheet of square thermal sensitive piece between described first pin and the second pin, it is inner that described square thermal sensitive piece is installed on described plastic casing.
2. a kind of big current alloy-type temperature fuse of resistance to surge according to claim 1, is characterized in that: the cross section of described first pin and the second pin is the one in circle, triangle, square or ellipse.
3. a kind of big current alloy-type temperature fuse of resistance to surge according to claim 1, is characterized in that: the cross section of described square thermal sensitive piece be square, with the one in the square of inner groovy or ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834051.XU CN204332880U (en) | 2014-12-25 | 2014-12-25 | A kind of big current alloy-type temperature fuse of resistance to surge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834051.XU CN204332880U (en) | 2014-12-25 | 2014-12-25 | A kind of big current alloy-type temperature fuse of resistance to surge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332880U true CN204332880U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420834051.XU Active CN204332880U (en) | 2014-12-25 | 2014-12-25 | A kind of big current alloy-type temperature fuse of resistance to surge |
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| CN (1) | CN204332880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428179A (en) * | 2015-12-31 | 2016-03-23 | 洪湖市蓝光电子有限责任公司 | Alloy type thermal link with breaking current resistance |
| WO2017211295A1 (en) * | 2016-06-07 | 2017-12-14 | 厦门赛尔特电子有限公司 | Stack-type temperature safety device |
-
2014
- 2014-12-25 CN CN201420834051.XU patent/CN204332880U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428179A (en) * | 2015-12-31 | 2016-03-23 | 洪湖市蓝光电子有限责任公司 | Alloy type thermal link with breaking current resistance |
| WO2017211295A1 (en) * | 2016-06-07 | 2017-12-14 | 厦门赛尔特电子有限公司 | Stack-type temperature safety device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.6, Hongjian Road, jiaomei Town, Taiwan investment zone, Zhangzhou City, Fujian Province, 363000 Patentee after: Zhangzhou Yabao Electronics Co.,Ltd. Address before: 363107 Hongjian Industrial Zone, Longchi Development Zone, Zhangzhou City, Fujian Province Patentee before: ZHANGZHOU YABAO ELECTRONIC Co.,Ltd. |