CN203573925U - Temperature fuse - Google Patents
Temperature fuse Download PDFInfo
- Publication number
- CN203573925U CN203573925U CN201320684695.0U CN201320684695U CN203573925U CN 203573925 U CN203573925 U CN 203573925U CN 201320684695 U CN201320684695 U CN 201320684695U CN 203573925 U CN203573925 U CN 203573925U
- Authority
- CN
- China
- Prior art keywords
- fuse
- link
- chamber
- fusing
- pin
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000008602 contraction Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Images
Abstract
The utility model discloses a temperature fuse which is characterized by including a cylindrical fuse link and a casing, the two ends of the fuse link are electrically connected with pins, the casing covers the fuse link and the connection parts of the pins and the fuse link, an external fusing chamber is arranged between the casing and the outer wall of the fuse link, the pins and the inner wall of the fuse link form an internal fusing chamber, and the internal fusing chamber and the external fusing chamber are filled with fuse-assisting agent. The fuse-assisting agent greatly enhances the interfacial tension of liquid-phase metal when the fuse link is in the fusing state, so that the liquid-phase metal contracts toward the pins rapidly to form a spherical liquid drop, and the fusing shape of the fuse link is stable and the contraction speed of the fuse link is fast, thereby realizing the rapid turn-off motion of a loop. Therefore, the temperature fuse overcomes the defects that the fusing shape of a fuse link is not stable and breaking failure rate is high, and the temperature fuse is high in reliability.
Description
Technical field
The utility model relates to a kind of overtemperature protection device, specifically a kind of Thermal Cutoffs from fusing.
Background technology
Possess produce in the improper running of Thermal Cutoffs energy induction apparatus electronic product of overcurrent protection overheated, thereby adopt from the mode of fusing, cut off current circuit, to avoid the situation of high temperature continuous current to cause the generation of fire.
Generally; during this class Thermal Cutoffs fusing, have very large discreteness, process, the shape of its fusing are often uncontrollable, and thorough, the unsettled situation of segmentation ability in some cases can occur to fuse; so will cause current circuit to cut off and lose efficacy, can not play a protective role.
Due to the needs of electronic product structure, portion temperature fuse need to adopt axialmode, i.e. tubular, to meet current value higher in circuit and magnitude of voltage.The fusing position of this tubular is because laterally thermally conductive pathways is long, and its fusing form is difficult to guarantee more.
Utility model content
For existing Thermal Cutoffs, particularly the problem of Thermal Cutoffs fusing poor effect, disjunction poor stability, the utility model proposes a kind of Thermal Cutoffs, is intended to overcome its fusing shape unstable, the defect that disjunction failure rate is high, and its technical scheme is as follows:
A kind of Thermal Cutoffs, it comprises:
Fuse-link, cylindrical shape, its two ends are electrically connected a pin separately;
Shell, is coated on the junction of described fuse-link and described pin and this fuse-link; Between this shell and described fuse-link outer wall, there is an outer fusing chamber; Described pin and fuse-link inwall build an interior fusing chamber; Wherein,
In described interior fusing chamber and outer fusing chamber, fill the disconnected agent of fluxing.
As the improvement of this programme, can there is following embodiment:
In preferred embodiment, described pin and the binding site at described fuse-link two ends have relative to bowl-shape mouthful, this concave surface of bowl-shape mouthful hides and is electrically connected the two ends of being fixed on described fuse-link separately.
In preferred embodiment, inside, described outer fusing chamber has the radially projection of convex, and described projection grasps the outer wall of fixing described fuse-link.
In preferred embodiment, the lead-out mode of pin comprises radial and axial mode.
In preferred embodiment, described shell comprises a base and a cover plate; Outer fusing chamber described in this base and cover plate phase buckle forming.
In preferred embodiment, described base has an encapsulating chamber separately in the described Pin locations of both sides, fills encapsulating material in this encapsulating chamber, and described encapsulating material surrounds the part of described pin in this encapsulating chamber.
In preferred embodiment, described encapsulating material hides described cover plate.
The beneficial effect of this programme has:
Fluxing disconnected agent in interior fusing chamber and outer fusing chamber greatly strengthened fuse-link when molten condition liquid metal at the tension force at interface, it is shunk to pin rapidly, become spherical drop, make fusing dimensionally stable, the retraction speed of fuse-link fast, realized the quick shutoff action in loop.Thereby it is unstable to have overcome fuse-link fusing shape, the defect that disjunction failure rate is high, reliability is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail:
Fig. 1 is the shaft section cutaway view of the utility model one embodiment;
Fig. 2 is three-dimensional explosive view embodiment illustrated in fig. 1;
Fig. 3 is normal condition schematic diagram embodiment illustrated in fig. 1;
Fig. 4 is the view that has realized defencive function on Fig. 3 basis.
Embodiment
As shown in Figures 1 to 4, the schematic diagram of the utility model one embodiment.Wherein, Fig. 1 has shown the schematic diagram of its shaft section, and Fig. 2 is the explosive view of its critical piece; Fig. 3 and Fig. 4 have shown respectively its normal operating conditions and protection blown state.
The present embodiment fuse-link 3 is cylindrical shape, and its two ends are electrically connected a pin 5 separately; At fuse-link 3 and pin 5, be coated a shell with the junction of this fuse-link 3.Between this shell and fuse-link 3 outer walls, there is an outer fusing chamber 11; Pin 5 builds an interior fusing chamber 12 with fuse-link 3 inwalls; In this interior fusing chamber 12 and outer fusing chamber, 11 have all filled the disconnected agent 4 of fluxing.
The function of the present embodiment is described in conjunction with Fig. 3 and Fig. 4:
Under the state of Fig. 3, fuse-link 3 temperature do not reach fusing condition, and therefore its dimensionally stable is constant, and under this state, pin 5 forms good conductor path with fuse-link 3, can carry rated current.
Under Fig. 4 state, fuse-link 3 temperature reach fusing condition, become molten condition, fluxing disconnected agent 4 in interior fusing chamber 12 and outer fusing chamber 11 greatly strengthened fuse-link 3 when molten condition liquid metal at the tension force at interface, it is shunk to pin 5 rapidly, become spherical drop, make fusing dimensionally stable, the retraction speed of fuse-link 3 fast, realize the quick shutoff action in loop, there is reliable operating chacteristics.
The present embodiment also has following Some features:
11 inside, outer fusing chamber have the radially projection 7 of convex, and this projection 7 grasps the outer wall of fixing fuse-link 3.Visible in conjunction with Fig. 2 especially, can retrain exactly in when assembling the position of fuse-link 3, ensure product consistency and efficiency of assembling, on the other hand, because projection 7 has intercepted the segment space in outer fusing chamber 11, extended the creepage distance of electric arc when fuse-link 3 fuses.
Shell comprises a base 1 and a cover plate 2; This base 1 and cover plate 2 phase buckle formings outer fusing chamber 11.This structure is convenient to fill the disconnected agent 4 of fluxing in it.
The above, it is only the utility model preferred embodiment, therefore can not limit according to this scope that the utility model is implemented, the equivalence of doing according to the utility model the scope of the claims and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (7)
1. a Thermal Cutoffs, is characterized in that: it comprises:
Fuse-link, cylindrical shape, its two ends are electrically connected a pin separately;
Shell, is coated on the junction of described fuse-link and described pin and this fuse-link; Between this shell and described fuse-link outer wall, there is an outer fusing chamber; Described pin and fuse-link inwall build an interior fusing chamber; Wherein,
In described interior fusing chamber and outer fusing chamber, fill the disconnected agent of fluxing.
2. a kind of Thermal Cutoffs according to claim 1, is characterized in that: described pin and the binding site at described fuse-link two ends have relative to bowl-shape mouthful, this concave surface of bowl-shape mouthful hides and is electrically connected the two ends of being fixed on described fuse-link separately.
3. a kind of Thermal Cutoffs according to claim 1, is characterized in that: inside, described outer fusing chamber has the radially projection of convex, and described projection grasps the outer wall of fixing described fuse-link.
4. a kind of Thermal Cutoffs according to claim 3, is characterized in that: the lead-out mode of described pin comprises radial and axial mode.
5. according to a kind of Thermal Cutoffs described in claim 1 or 2 or 3 or 4, it is characterized in that: described shell comprises a base and a cover plate; Outer fusing chamber described in this base and cover plate phase buckle forming.
6. a kind of Thermal Cutoffs according to claim 5, is characterized in that: described base has an encapsulating chamber separately in the described Pin locations of both sides, fills encapsulating material in this encapsulating chamber, and described encapsulating material surrounds the part of described pin in this encapsulating chamber.
7. a kind of Thermal Cutoffs according to claim 6, is characterized in that: described encapsulating material hides described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320684695.0U CN203573925U (en) | 2013-10-31 | 2013-10-31 | Temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320684695.0U CN203573925U (en) | 2013-10-31 | 2013-10-31 | Temperature fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203573925U true CN203573925U (en) | 2014-04-30 |
Family
ID=50541640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320684695.0U Expired - Lifetime CN203573925U (en) | 2013-10-31 | 2013-10-31 | Temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203573925U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599917A (en) * | 2015-02-14 | 2015-05-06 | 南京萨特科技发展有限公司 | Protecting element |
| WO2016127846A1 (en) * | 2015-02-14 | 2016-08-18 | 南京萨特科技发展有限公司 | Protecting element |
| CN106024548A (en) * | 2015-03-25 | 2016-10-12 | 斯玛特电子公司 | Fuse resistor and manufacturing method thereof |
| CN106057603A (en) * | 2016-09-07 | 2016-10-26 | 南京萨特科技发展有限公司 | Novel suspension surface mounting fuse |
| CN106601570A (en) * | 2017-01-10 | 2017-04-26 | 上海查尔斯电子有限公司 | Fuse |
| WO2019061252A1 (en) * | 2017-09-29 | 2019-04-04 | 电安科技嘉兴有限公司 | Fuse device, and fuse wire element thereof |
-
2013
- 2013-10-31 CN CN201320684695.0U patent/CN203573925U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599917A (en) * | 2015-02-14 | 2015-05-06 | 南京萨特科技发展有限公司 | Protecting element |
| WO2016127846A1 (en) * | 2015-02-14 | 2016-08-18 | 南京萨特科技发展有限公司 | Protecting element |
| CN104599917B (en) * | 2015-02-14 | 2017-03-08 | 南京萨特科技发展有限公司 | A kind of protection element |
| US10388483B2 (en) | 2015-02-14 | 2019-08-20 | Nanjing Sart Science & Technology Development Co., Ltd | Protective element |
| CN106024548A (en) * | 2015-03-25 | 2016-10-12 | 斯玛特电子公司 | Fuse resistor and manufacturing method thereof |
| CN106057603A (en) * | 2016-09-07 | 2016-10-26 | 南京萨特科技发展有限公司 | Novel suspension surface mounting fuse |
| CN106057603B (en) * | 2016-09-07 | 2019-09-03 | 南京萨特科技发展有限公司 | A kind of hanging surface mounting fuse protector |
| CN106601570A (en) * | 2017-01-10 | 2017-04-26 | 上海查尔斯电子有限公司 | Fuse |
| WO2019061252A1 (en) * | 2017-09-29 | 2019-04-04 | 电安科技嘉兴有限公司 | Fuse device, and fuse wire element thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |