CN207082502U - A kind of improved low-tension fuse - Google Patents
A kind of improved low-tension fuse Download PDFInfo
- Publication number
- CN207082502U CN207082502U CN201720879779.8U CN201720879779U CN207082502U CN 207082502 U CN207082502 U CN 207082502U CN 201720879779 U CN201720879779 U CN 201720879779U CN 207082502 U CN207082502 U CN 207082502U
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- China
- Prior art keywords
- insulation tube
- cap
- fuse
- fusable links
- interior cap
- 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.)
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Abstract
A kind of improved low-tension fuse, including insulation tube, fusable links, interior cap and outer cap, fusable links are in insulation tube, insulation tube both ends are arranged interior cap respectively, outer cap is sheathed in corresponding on cap respectively, the both ends of fusable links are through insulation tube and interior cap and are welded on interior cap, and at least one bending part is formed filled with the electric arc material that goes out, fusable links middle part in insulation tube.Bending part is the broken line shape of V-arrangement, U-shaped, S-shaped or arc.The utility model can overcome existing fuse, and the fuse performance caused by fuse bears high/low temperature thermal shock or curent change declines or failed when in use.
Description
Technical field
Electic protection element is the utility model is related to, in particular to a kind of improved low-tension fuse.
Background technology
Fuse, refer to when electric current exceedes setting, fusable links is fused with heat caused by itself, so as to disconnect electricity
A kind of electrical equipment on road, it is widely used in high and low voltage electric distribution system and control system.Current existing fuse fusable links are all
It is straight.In actual use, fuse may bear the thermal shock of high temperature, low temperature, and frequently rush of current.
So the housing of fuse and melt all can produce expansion or shrinkage because of temperature change.And the insulation tube of fuse is whether made pottery
Porcelain or other non-metallic materials, its thermal coefficient of expansion compare metal bath（Silver or copper）Thermal coefficient of expansion it is small, such melt exists
During high temperature can because after expanded by heating length increase it is more more than insulation tube and produces bending, in low temperature, melt can be because of temperature reduction receipts
Length reduces more more than insulation tube and bears mechanical stretching stress after contracting, and when stress reaches to a certain degree, melt will produce modeling
Property deformation even be broken, cause fuse performance decline or failure.
Utility model content
Provided by the utility model is a kind of improved low-tension fuse, and its main purpose is to overcome existing fuse
The fuse performance caused by fuse bears high/low temperature thermal shock or curent change declines or failed when in use.
In order to reach above-mentioned purpose, solution of the present utility model is：
A kind of improved low-tension fuse, including insulation tube, fusable links, interior cap and outer cap, fusable links are located at insulation tube
Interior, insulation tube both ends are arranged interior cap respectively, outer cap be sheathed on respectively corresponding on cap, the both ends of fusable links through insulation tube and
Interior cap is simultaneously welded on interior cap, and at least one bending part is formed filled with the electric arc material that goes out, fusable links middle part in insulation tube.
Further, bending part is the broken line shape of V-arrangement, U-shaped, S-shaped or arc.
Further, the electric arc material that goes out is quartz sand.
After said structure, after the utility model increases bending part in fusable links, thermal shock or electric current are being born
Its bending part is deployable during pulse, and phenomenon of rupture is produced because of contraction to compensate the fusable links caused by temperature change, so as to
Fuse can be avoided, and the fuse performance caused by fuse bears high/low temperature thermal shock or curent change declines when in use
Or failure.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to which the technical solution of the utility model is explained further, the utility model is entered below by specific embodiment
Row elaborates.
As shown in figure 1, the utility model discloses a kind of improved low-tension fuse, it include insulation tube 1, fusable links 2,
Interior cap 3 and outer cap 4.Wherein, fusable links 2 are in insulation tube 1, and interior cap 3 and outer cap 4 respectively have two, and cap 3 is arranged respectively in two
In the both ends of insulation tube 1, two outer caps 4 are sheathed in corresponding on cap 3 respectively.The both ends of fusable links 2 pass through insulation tube 1 and interior cap
3 and it is welded on interior cap 3.Filled with the electric arc material 5 that goes out in insulation tube 1, the electric arc material 5 that goes out can be quartz sand.
Reference picture 1, in the utility model, at least one bending part 21 is formed at the middle part of fusable links 2, bending part 21 can be V
Other broken line shapes such as shape, U-shaped, S-shaped, arc.The bending part 21 does not change the I-T characteristics of fusable links（Operating chacteristics, immediately
Between/current characteristics）, bending part 21 is located in the middle part of fusable links, nor affects on the butt-joint of interior cap and coordinate with the assembling of outer cap.
After increasing bending part in fusable links, when bearing thermal shock or current impulse, its bending part is deployable, with compensation
Fusable links produce phenomenon of rupture because of contraction caused by temperature change, so as to avoid fuse when in use because fuse is held
Declined or failed by fuse performance caused by high/low temperature thermal shock or curent change.
Above-described embodiment and schema and non-limiting product form of the present utility model and style, any art
The appropriate change or modification that those of ordinary skill is done to it, all should be regarded as not departing from patent category of the present utility model.
Claims (3)
1. a kind of improved low-tension fuse, including insulation tube, fusable links, interior cap and outer cap, fusable links are located in insulation tube,
Insulation tube both ends are arranged interior cap respectively, outer cap be sheathed on respectively corresponding on cap, the both ends of fusable links are through insulation tube and interior
Cap is simultaneously welded on interior cap, filled with the electric arc material that goes out in insulation tube, it is characterised in that：Formed in the middle part of fusable links at least one
Bending part.
A kind of 2. improved low-tension fuse as claimed in claim 1, it is characterised in that：Bending part be V-arrangement, U-shaped, S-shaped or
The broken line shape of arc.
A kind of 3. improved low-tension fuse as claimed in claim 1, it is characterised in that：The electric arc material that goes out is quartz sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720879779.8U CN207082502U (en) | 2017-07-19 | 2017-07-19 | A kind of improved low-tension fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720879779.8U CN207082502U (en) | 2017-07-19 | 2017-07-19 | A kind of improved low-tension fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082502U true CN207082502U (en) | 2018-03-09 |
Family
ID=61424048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720879779.8U Active CN207082502U (en) | 2017-07-19 | 2017-07-19 | A kind of improved low-tension fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207082502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550508A (en) * | 2018-06-21 | 2018-09-18 | 东莞市贝特电子科技股份有限公司 | A kind of high-performance fuse and its workflow |
-
2017
- 2017-07-19 CN CN201720879779.8U patent/CN207082502U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550508A (en) * | 2018-06-21 | 2018-09-18 | 东莞市贝特电子科技股份有限公司 | A kind of high-performance fuse and its workflow |
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| GR01 | Patent grant |