CN209880526U - Small-size large-capacity fuse - Google Patents
Small-size large-capacity fuse Download PDFInfo
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- CN209880526U CN209880526U CN201920475615.8U CN201920475615U CN209880526U CN 209880526 U CN209880526 U CN 209880526U CN 201920475615 U CN201920475615 U CN 201920475615U CN 209880526 U CN209880526 U CN 209880526U
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- conductive cap
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Abstract
The utility model provides a small-size large capacity fuse, includes first insulating tube, second insulating tube, fuse, insulating plug, electrically conductive cap, insulating plug wears to establish in the first insulating tube, the intussuseption of first insulating tube is filled with arc extinguishing material, second insulating tube is established global of first insulating tube, electrically conductive cap lock sets up the both ends of second insulating tube, the fuse is convoluteed global of insulating plug, just the both ends of fuse are respectively with the electrically conductive cap welding of corresponding side. The utility model discloses a double-deck tubular product structure fills arc extinguishing material, can bear the fusing of high voltage heavy current load, has short-circuit protection and the dual function of thunderbolt protection concurrently.
Description
Technical Field
The utility model relates to a fuse field indicates a small-size large capacity fuse especially.
Background
Fuses, also known as fuses, function to: when the circuit is in fault or abnormal, the circuit is raised continuously, and the raised current may damage some important devices or valuable devices in the circuit, or may burn the circuit or even cause fire, so that the fuse will fuse itself and cut off the current when the current is raised to a certain height and for a certain time, thereby protecting the safe operation of the circuit.
The 5G communication equipment is densely installed, has high transmission speed and various performances, and puts higher requirements on miniaturization, modularization and high power of the equipment. As a fuse indispensable for overcurrent protection, a higher demand has also been made: small size, high voltage, heavy current, have short-circuit protection and the dual function of thunderbolt protection concurrently. In view of the above, the applicant has developed a small-sized large-capacity fuse that meets the demand.
Disclosure of Invention
In order to solve the problem, the utility model provides a small-size large capacity fuse adopts double-deck tubular product structure and fills arc extinguishing material, can bear the fusing of high voltage heavy current load, has short-circuit protection and the dual function of thunderbolt protection concurrently.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a small-size large capacity fuse, includes first insulating tube, second insulating tube, fuse, insulated wire, electrically conductive cap, the insulated wire is worn to establish in the first insulating tube, the first insulating tube intussuseption is filled with arc extinguishing material, the second insulating tube is established global of first insulating tube, electrically conductive cap lock sets up the both ends of second insulating tube, the fuse is convoluteed global of insulating plug, just the both ends of fuse are respectively with the electrically conductive cap welding of corresponding side.
Specifically, two ends of the first insulating tube are respectively provided with a sealing element.
In particular, the first insulating tube is a polymer tube.
Specifically, the second insulating tube is a ceramic tube.
Specifically, the fuse is an alloy fuse.
Specifically, the insulating core rod is a glass fiber thread.
Specifically, the conductive caps are copper caps.
Specifically, the end of the fuse is soldered to the conductive cap by a solder.
Specifically, the sealing member is a plastic member.
The beneficial effects of the utility model reside in that: the utility model discloses a double-deck tubular product structure fills arc extinguishing material, can bear the fusing of high voltage heavy current load. The fuse wire is wound on the peripheral surface of the insulating core rod, so that the contact area between the fuse wire and the arc extinguishing material is increased, and the aim of quickly extinguishing the arc can be fulfilled. Through the structure, the utility model discloses the short-circuit that has satisfied 450VDC 150A divides disconnected and 8/28us 10KA two-way 10 thunderbolt tests. The utility model relates to a product of a small-size, high voltage, heavy current has short-circuit protection and lightning protection's dual function concurrently moreover, has adapted to the miniaturized, modularization, powerful requirement of 5G communications facilities.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a front view of the present invention;
fig. 3 is a schematic sectional view taken along line a-a of fig. 2.
The reference numbers illustrate: 1-a first insulating tube; 2-a second insulating tube; 3-a fuse; 4-insulating wire; 5-a conductive cap; 6-arc suppressing material; 7-tin material; 8-sealing element.
Detailed Description
Referring to fig. 1-3, the present invention relates to a small-sized high-capacity fuse, including a first insulating tube 1, a second insulating tube 2, a fuse wire 3, an insulating core rod 4, and a conductive cap 5, wherein the insulating wire 4 is disposed in the first insulating tube 1, an arc extinguishing material 6 is filled in the first insulating tube 1, the second insulating tube 2 is disposed on the periphery of the first insulating tube 1, the conductive cap 5 is fastened to the two ends of the second insulating tube 2, the fuse wire 3 is wound on the periphery of the insulating wire 4, and the two ends of the fuse wire 3 are respectively welded to the conductive caps 5 on the corresponding sides.
The small size here means that the product uses the same fuse size of 6.3 × 25.4mm as 4G based on the requirement of 5G base station circuit protection. The large capacity here means that the product adopts a double-layer pipe structure and is filled with specially-made arc extinguishing sand, and the product can be suitable for high-power 5G communication equipment.
The utility model discloses an operating principle is, is far greater than the rated current of fuse 3 when external current, lasts the heavy current effect and produces a large amount of heats, makes fuse 3 melt, and when fuse 3 fuses, can produce arc voltage, arc extinguishing sand will absorb the arc energy, makes electric arc cool off fast, plays the arc extinguishing effect, makes the circuit insulating with the load, has eliminated the danger of electric shock. The utility model discloses a fuse 3 is through convoluteing around insulating filament 4 global, increases the area of contact of fuse 3 and arc extinguishing sand to can reach the purpose of quick arc extinguishing, and through the interior outer registrate of double-deck insulating tube, make this product can bear the fusing of high voltage heavy current load.
The utility model discloses an above-mentioned structure has satisfied that the short circuit of 450VDC 150A divides absolutely and the two-way 10 thunderbolt tests of 8/28us 10 KA. The utility model relates to a product of a small-size, high voltage, heavy current has short-circuit protection and lightning protection's dual function concurrently moreover, has adapted to the miniaturized, modularization, powerful requirement of 5G communications facilities.
Specifically, the two ends of the first insulating tube 1 are respectively provided with a sealing member 8.
The sealing member 8 is tightly sleeved on the circumferential surface of the glass fiber and is positioned in the pipe orifice of the first insulating pipe 1, the pipe orifices at two ends of the first insulating pipe 1 are sealed through the sealing member 8, arc extinguishing sand is kept in the pipe, and the arc extinguishing sand is prevented from flowing out.
Specifically, the first insulating tube 1 is a polymer tube.
The polymer has good insulation and low thermal conductivity, and is beneficial to electrical safety.
Specifically, the second insulating tube 2 is a ceramic tube.
The ceramic has high temperature resistance and good thermal stability, can bear high temperature during fusing, has high mechanical strength, good wear resistance and corrosion resistance, and is suitable for manufacturing the outer tube of the fuse.
Specifically, the fuse 3 is an alloy fuse 3.
The alloy fuse 3 has good guiding performance.
Specifically, the insulating filament 4 is a glass filament.
The glass fiber rod is insulated, two ends of the glass fiber rod are fixed on the inner bottom surface of the conductive cap 5 through the tin material 7, and the glass fiber rod provides insulation support for the fuse wire 3.
In particular, the conductive caps 5 are copper caps.
Copper has good electrical conductivity and is suitable for use as a terminal electrode material.
Specifically, the end of the fuse wire 3 is soldered to the conductive cap 5 by a solder 7.
The end of the fuse 3 is welded with the conductive cap 5 through the tin material 7 with high strength, and the stable conduction of the circuit is realized.
In particular, the sealing element 8 is a plastic piece.
The plastic part has the performance of insulation and wear resistance.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.
Claims (8)
1. A small-size large capacity fuse characterized in that: including first insulating tube, second insulating tube, fuse, insulated wire, electrically conductive cap, the insulated wire wears to establish in the first insulating tube, the first insulating tube intussuseption is filled with arc extinguishing material, the second insulating tube is established global of first insulating tube is overlapped, electrically conductive cap lock sets up the both ends of second insulating tube, the fuse is convoluteed global of insulated wire, just the both ends of fuse are welded with the electrically conductive cap that corresponds the side respectively.
2. A small-sized large-capacity fuse according to claim 1, wherein: and sealing pieces are respectively arranged at two ends of the first insulating pipe.
3. A small-sized large-capacity fuse according to claim 1, wherein: the first insulating tube is a polymer tube.
4. A small-sized large-capacity fuse according to claim 1, wherein: the second insulating tube is a ceramic tube.
5. A small-sized large-capacity fuse according to claim 2, wherein: the fuse is an alloy fuse.
6. A small-sized large-capacity fuse according to claim 1, wherein: the conductive cap is a copper cap.
7. A small-sized large-capacity fuse according to claim 1, wherein: the end of the fuse wire is welded with the conductive cap through tin materials.
8. A small-sized large-capacity fuse according to claim 2, wherein: the sealing element is a plastic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475615.8U CN209880526U (en) | 2019-04-04 | 2019-04-04 | Small-size large-capacity fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475615.8U CN209880526U (en) | 2019-04-04 | 2019-04-04 | Small-size large-capacity fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880526U true CN209880526U (en) | 2019-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920475615.8U Active CN209880526U (en) | 2019-04-04 | 2019-04-04 | Small-size large-capacity fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209880526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933496A (en) * | 2020-06-22 | 2020-11-13 | 南京萨特科技发展有限公司 | Button type fuse and manufacturing method |
-
2019
- 2019-04-04 CN CN201920475615.8U patent/CN209880526U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933496A (en) * | 2020-06-22 | 2020-11-13 | 南京萨特科技发展有限公司 | Button type fuse and manufacturing method |
| CN111933496B (en) * | 2020-06-22 | 2023-03-21 | 南京萨特科技发展有限公司 | Button type fuse and manufacturing method |
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