CN111403248A - Fuse that overload protection performance is strong - Google Patents
Fuse that overload protection performance is strong Download PDFInfo
- Publication number
- CN111403248A CN111403248A CN202010357263.3A CN202010357263A CN111403248A CN 111403248 A CN111403248 A CN 111403248A CN 202010357263 A CN202010357263 A CN 202010357263A CN 111403248 A CN111403248 A CN 111403248A
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- plate
- fixed
- fuse
- rod
- limiting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
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- Fuses (AREA)
Abstract
The invention relates to the technical field of fuses, in particular to a fuse with high overload protection performance, which comprises a bottom plate and two porcelain insulators, wherein bases are fixed at the bottoms of the two porcelain insulators respectively, the bases are placed on two sides above the bottom plate, a fixing mechanism is connected between the four corners of the base and the bottom plate, the upper ends of the insulators are fixed above the porcelain insulators respectively, an upper contact is arranged above the upper end of one insulator, a lower contact is arranged above the upper end of the other insulator, electrical connection wiring cards are connected below the lower contact and the upper contact respectively, the electrical connection wiring cards are fixedly arranged on the upper ends of the insulators, and connecting blocks are fixed on the lower contact and the upper contact respectively. The fuse connects the fuse tube with the upper contact and the lower contact through the connecting mechanism, and the fuse tube plays a role of connecting an input circuit in the switching power supply under normal conditions, so that once overload or short-circuit fault occurs.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a fuse with strong overload protection performance.
Background
The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so as to cut off the circuit; a current protector is made by applying the principle. The fuse is widely applied to high and low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protection devices as a short circuit and overcurrent protector. The metal conductor is used as a melt to be connected in series in a circuit, and when overload or short-circuit current passes through the melt, the melt is fused due to self heating, so that the circuit is broken. The fuse has simple structure and convenient use, and can be widely used as a protective device in electric power systems, various electrical equipment and household appliances. The action of the fuse is realized by fusing the melt, and the fuse has a very obvious characteristic, namely ampere-second characteristic. For a melt, the action current and the action time characteristics of the melt, namely ampere-second characteristics of a fuse are also called inverse time delay characteristics, namely: the fusing time is long when the overload current is small; when the overload current is large, the fusing time is short. When the existing fuse needs to replace the fuse tube, the existing fuse is inconvenient to replace.
Disclosure of Invention
The invention aims to solve the defect that a fuse tube is inconvenient to replace in the prior art, and provides a fuse with high overload protection performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fuse with strong overload protection performance is designed, which comprises a bottom plate and two porcelain insulators, wherein bases are fixed at the bottoms of the two porcelain insulators, the base is arranged on two sides above the bottom plate, a fixing mechanism is connected between the four corners of the base and the bottom plate, the upper ends of the insulators are fixed above the porcelain insulators, wherein an upper contact is arranged above the upper end of one insulator, a lower contact is arranged above the upper end of the other insulator, electrical connection wiring cards are connected below the lower contact and the upper contact, and the electrical connection wiring card is fixedly arranged on the upper end of the insulator, the lower contact and the upper contact are both fixedly provided with connecting blocks, a fuse tube is arranged between the two connecting blocks, an inserting mechanism is arranged between the two ends of the fuse tube and the connecting block, and connecting mechanisms are arranged between the two ends of the fuse tube and the lower contact and the upper contact.
Preferably, the fixing mechanism comprises a connecting plate and a thread groove, the connecting plate is fixed at four corners of the base, a round hole is formed in the connecting plate, the thread groove is formed in a bottom plate below the connecting plate, a bolt is inserted into the round hole, and one end of the bolt penetrates through the round hole and is connected with the thread groove.
Preferably, the upper four corners of the base are all provided with lower limiting holes, the four corners of the bottom plate below the base are all fixed with lower limiting rods, and one end of each lower limiting rod penetrates through the lower limiting hole and extends upwards.
Preferably, the inserting mechanism comprises a slide hole and a slide rod, the slide hole is formed in the connecting block, a slot is formed in the side wall of the slide hole, the slide rod is fixed to one end of the fuse tube and inserted into the slide hole, an insertion hole is formed in the slide rod, an insertion rod is inserted into the slot, and one end of the insertion rod penetrates through the insertion hole and the connecting block and is provided with a limiting mechanism.
Preferably, the limiting mechanism comprises a side plate and an upper plate, the side plate is fixed to one end of the inserting rod, the upper plate is fixed to the connecting block, an upper sliding hole is formed in the upper plate, a lower sliding hole is formed in the side plate, the baffle is placed above the upper plate, a pull rod is fixed to the upper portion of the baffle, a limiting rod is fixed to the bottom of the baffle, one end of the limiting rod penetrates through the upper sliding hole and is inserted into the lower sliding hole, the limiting plate is fixed to one end of the limiting rod, and a clamping mechanism is arranged between two sides of the upper portion of the limiting rod and the side wall of the upper sliding hole.
Preferably, the pull rod is provided with anti-skid grains.
Preferably, the clamping mechanism comprises a rubber protrusion and an arc-shaped groove, the arc-shaped groove is formed in the side wall of the upper sliding hole, the rubber protrusion is fixed on two sides above the limiting rod, and the rubber protrusion is clamped in the arc-shaped groove.
Preferably, coupling mechanism includes the lower connecting plate, the lower connecting plate is fixed under on contact and last contact, the connecting plate top is fixed with the connecting rod down, the connecting rod top is fixed with the arc, and the fuse-link is placed on the arc, and connecting plate, connecting rod, arc are the copper product down.
The fuse with strong overload protection performance provided by the invention has the beneficial effects that: the fuse is connected with the upper contact and the lower contact through the connecting mechanism, the fuse tube plays a role of connecting an input circuit in a switching power supply under normal conditions, once overload or short-circuit fault occurs, current passing through the fuse tube exceeds fusing current, a fuse wire is fused, the input circuit is cut off, and therefore the overcurrent protection effect is achieved.
Drawings
Fig. 1 is a schematic front view of a fuse with strong overload protection performance according to the present invention.
Fig. 2 is a schematic side view of a fuse with strong overload protection performance according to the present invention.
Fig. 3 is a schematic top view of a fuse with strong overload protection performance according to the present invention.
Fig. 4 is a schematic structural diagram of a connection mechanism of a fuse with strong overload protection performance according to the present invention.
Fig. 5 is a schematic structural diagram of an inserting mechanism of a fuse with strong overload protection performance according to the present invention.
Fig. 6 is a schematic structural diagram of a limiting mechanism of a fuse with strong overload protection performance according to the present invention.
Fig. 7 is an enlarged schematic view of a portion a of the fuse with high overload protection performance according to the present invention.
Fig. 8 is an enlarged schematic view of a B-portion structure of a fuse with strong overload protection performance according to the present invention.
In the figure: the device comprises a bottom plate 1, a base 2, a porcelain insulator 3, an insulator upper end 4, an electrical connection wiring card 5, a connecting block 6, a connecting mechanism 7, a lower connecting plate 71, a connecting rod 72, an arc plate 73, an inserting mechanism 8, a sliding hole 81, a sliding rod 82, an inserting rod 83, an inserting groove 84, an inserting hole 85, a limiting mechanism 9, a side plate 91, an upper plate 92, an upper sliding hole 93, a lower sliding hole 94, a limiting rod 95, a limiting plate 96, a baffle 97, a pull rod 98, a fuse tube 10, an upper contact 11, a lower contact 12, a thread groove 13, a lower limiting hole 14, a lower limiting rod 15, a connecting plate 16, a round hole 17, a bolt 18, a rubber bulge 19 and an arc groove 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-3, a fuse with strong overload protection performance comprises a bottom plate 1 and two porcelain insulators 3, wherein bases 2 are fixed at the bottoms of the two porcelain insulators 3, the bases 2 are placed on two sides above the bottom plate 1, a fixing mechanism is connected between four corners of the base 2 and the bottom plate 1, insulator upper ends 4 are fixed above the porcelain insulators 3, an upper contact 11 is arranged above one insulator upper end 4, a lower contact 12 is arranged above the other insulator upper end 4, electrical connection wiring clips 5 are connected below the lower contact 12 and the upper contact 11, the electrical connection wiring clips 5 are fixedly arranged on the insulator upper ends 4, connecting blocks 6 are fixed on the lower contact 12 and the upper contact 11, a fuse tube 10 is arranged between the two connecting blocks 6, an inserting mechanism 8 is arranged between two ends of the fuse tube 10 and the connecting blocks 6, and connecting mechanisms 7 are arranged between two ends of the fuse tube 10 and the lower contact 12 and the upper contact 11, normally, the fuse tube 10 functions to connect an input circuit in the switching power supply, and once an overload or short-circuit fault occurs, a current passing through the fuse tube 10 exceeds a fusing current, the fuse is fused, and the input circuit is cut off, thereby performing an overcurrent protection function.
Example 2
Referring to fig. 7, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the fixing mechanism includes a connecting plate 16 and a thread groove 13, the connecting plate 16 is fixed at four corners of the base 2, a circular hole 17 is opened on the connecting plate 16, the thread groove 13 is opened on the base plate 1 below the connecting plate 16, a bolt 18 is inserted into the circular hole 17, one end of the bolt 18 passes through the circular hole 17 and is connected with the thread groove 13, and the base 2 can be fixed on the base plate 1 by the fixing mechanism.
Example 3
Referring to fig. 7, as another preferred embodiment of the present invention, the difference from embodiment 1 is that lower limiting holes 14 are respectively formed at four corners of a base 2, lower limiting rods 15 are respectively fixed at four corners of a bottom plate 1 below the base 2, one end of each lower limiting rod 15 passes through the lower limiting hole 14 and extends upward, and one end of each lower limiting rod 15 passes through the lower limiting hole 14 to limit the position of the base 2.
Example 4
Referring to fig. 5, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the inserting mechanism 8 includes a slide hole 81 and a slide rod 82, the slide hole 81 is provided on the connecting block 6, a slot 84 is provided on a side wall of the slide hole 81, the slide rod 82 is fixed at one end of the fuse tube 10, the slide rod 82 is inserted in the slide hole 81, an insertion hole 85 is provided on the slide rod 82, an insertion rod 83 is inserted in the slot 84, one end of the insertion rod 83 passes through the insertion hole 85 and the connecting block 6 and is provided with a limiting mechanism 9, and the slide rod 82 can be limited by the inserting mechanism 8.
Example 5
Referring to fig. 6, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the limiting mechanism 9 includes a side plate 91 and an upper plate 92, the side plate 91 is fixed at one end of the insertion rod 83, the upper plate 92 is fixed on the connecting block 6, the upper plate 92 is provided with an upper sliding hole 93, the side plate 91 is provided with a lower sliding hole 94, a baffle 97 is disposed above the upper plate 92, a pull rod 98 is fixed above the baffle 97, the pull rod 98 is provided with anti-sliding patterns, a limiting rod 95 is fixed at the bottom of the baffle 97, one end of the limiting rod 95 passes through the upper sliding hole 93 and is inserted into the lower sliding hole 94, one end of the limiting rod 95 is fixed with a limiting plate 96, an engaging mechanism is disposed between two sides above the limiting rod 95 and the side wall of the upper sliding hole 93, the limiting mechanism 9 can limit the insertion rod 83, when the fuse tube 10 needs to be replaced, the limiting rod 98 is only pulled to pull the limiting plate 96 out of the lower sliding hole 94, finally, the sliding rod 82 is pulled out along the sliding hole 81.
Example 6
Referring to fig. 8, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the fastening mechanism includes a rubber protrusion 19 and an arc-shaped groove 20, the arc-shaped groove 20 is formed on the side wall of the upper sliding hole 93, the rubber protrusion 19 is fixed on two sides above the limiting rod 95, and the rubber protrusion 19 is fastened in the arc-shaped groove 20, and the limiting rod 95 can be limited by fastening the rubber protrusion 19 in the arc-shaped groove 20.
Example 7
Referring to fig. 4, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the connection mechanism 7 includes a lower connection plate 71, the lower connection plate 71 is fixed to the lower contact 12 and the upper contact 11, a connection rod 72 is fixed above the lower connection plate 71, an arc plate 73 is fixed above the connection rod 72, the fuse tube 10 is placed on the arc plate 73, and the lower connection plate 71, the connection rod 72, and the arc plate 73 are all made of copper, and the fuse tube 10 is connected to the upper contact 11 and the lower contact 12 by the connection mechanism 7.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The fuse with strong overload protection performance comprises a bottom plate (1) and two porcelain insulators (3), and is characterized in that bases (2) are fixed to the bottoms of the porcelain insulators (3) respectively, the bases (2) are placed on two sides of the top of the bottom plate (1), a fixing mechanism is connected between the four corners of the bases (2) and the bottom plate (1), insulator upper ends (4) are fixed to the tops of the porcelain insulators (3), one of the insulator upper ends (4) is provided with an upper contact (11), the other insulator upper end (4) is provided with a lower contact (12), electrical connection wiring cards (5) are connected to the lower contacts (12) and the lower contacts (11) respectively, the electrical connection wiring cards (5) are fixedly installed on the upper ends (4) of the insulators, and connecting blocks (6) are fixed to the lower contacts (12) and the upper contacts (11), two be provided with fusing tube (10) between connecting block (6), be provided with between fusing tube (10) both ends and connecting block (6) and insert and establish mechanism (8), all be provided with coupling mechanism (7) between fusing tube (10) both ends and lower contact (12) and last contact (11).
2. A fuse with strong overload protection performance according to claim 1, wherein the fixing mechanism comprises a connecting plate (16) and a thread groove (13), the connecting plate (16) is fixed at four corners of the base (2), a round hole (17) is formed in the connecting plate (16), the thread groove (13) is formed in the bottom plate (1) below the connecting plate (16), a bolt (18) is inserted into the round hole (17), and one end of the bolt (18) passes through the round hole (17) and is connected with the thread groove (13).
3. A fuse with strong overload protection performance according to claim 1, wherein the base (2) is provided with lower limiting holes (14) at four corners, the bottom plate (1) below the base (2) is fixed with lower limiting rods (15) at four corners, and one end of each lower limiting rod (15) passes through the lower limiting hole (14) and extends upwards.
4. A fuse with strong overload protection performance according to claim 1, wherein the inserting mechanism (8) comprises a slide hole (81) and a slide rod (82), the slide hole (81) is formed in the connecting block (6), a slot (84) is formed in the side wall of the slide hole (81), the slide rod (82) is fixed at one end of the fuse tube (10), the slide rod (82) is inserted into the slide hole (81), a jack (85) is formed in the slide rod (82), an inserting rod (83) is inserted into the slot (84), and one end of the inserting rod (83) passes through the jack (85) and the connecting block (6) and is provided with the limiting mechanism (9).
5. A fuse having a high overload protection performance according to claim 4, the limiting mechanism (9) comprises a side plate (91) and an upper plate (92), the side plate (91) is fixed at one end of the inserted link (83), the upper plate (92) is fixed on the connecting block (6), an upper sliding hole (93) is arranged on the upper plate (92), a lower sliding hole (94) is arranged on the side plate (91), a baffle plate (97) is arranged above the upper plate (92), a pull rod (98) is fixed above the baffle plate (97), a limiting rod (95) is fixed at the bottom of the baffle plate (97), one end of the limiting rod (95) penetrates through the upper sliding hole (93) and is inserted into the lower sliding hole (94), and a limiting plate (96) is fixed at one end of the limiting rod (95), and a clamping mechanism is arranged between the two sides above the limiting rod (95) and the side wall of the upper sliding hole (93).
6. A fuse with high overload protection performance according to claim 5, wherein the pull rod (98) is provided with anti-slip threads.
7. A fuse with strong overload protection performance according to claim 5, wherein the clamping mechanism comprises a rubber protrusion (19) and an arc-shaped groove (20), the arc-shaped groove (20) is formed in the side wall of the upper sliding hole (93), the rubber protrusion (19) is fixed on two sides above the limiting rod (95), and the rubber protrusion (19) is clamped in the arc-shaped groove (20).
8. A fuse with high overload protection performance according to claim 1, wherein the connecting mechanism (7) comprises a lower connecting plate (71), the lower connecting plate (71) is fixed on the lower contact (12) and the upper contact (11), a connecting rod (72) is fixed above the lower connecting plate (71), an arc-shaped plate (73) is fixed above the connecting rod (72), the fuse tube (10) is placed on the arc-shaped plate (73), and the lower connecting plate (71), the connecting rod (72) and the arc-shaped plate (73) are made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357263.3A CN111403248B (en) | 2020-04-29 | 2020-04-29 | Fuse protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357263.3A CN111403248B (en) | 2020-04-29 | 2020-04-29 | Fuse protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111403248A true CN111403248A (en) | 2020-07-10 |
| CN111403248B CN111403248B (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010357263.3A Active CN111403248B (en) | 2020-04-29 | 2020-04-29 | Fuse protector |
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| CN (1) | CN111403248B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331537A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Lightning-protection fuse |
| CN112349562A (en) * | 2020-10-31 | 2021-02-09 | 贵州电网有限责任公司 | Novel double-column type drop-out fuse |
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| CA1066747A (en) * | 1976-09-13 | 1979-11-20 | Kenneth E. Hanke | Enclosing structure for a high voltage electric fuse |
| KR20080068566A (en) * | 2007-01-18 | 2008-07-23 | 제이에스알 가부시끼가이샤 | Radiation-sensitive resin composition, interlayer insulating film and microlens, and method for producing the same |
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| CN202957214U (en) * | 2012-12-02 | 2013-05-29 | 高锡缘 | Fuse installing base |
| CN103137377A (en) * | 2011-11-22 | 2013-06-05 | 大连金州电器有限公司 | Fuse isolation switch |
| CN105428181A (en) * | 2015-11-20 | 2016-03-23 | 成都迅德科技有限公司 | Fuse protector |
| CN107068511A (en) * | 2015-11-14 | 2017-08-18 | 彭伟成 | A kind of overcurrent protection fuse |
| CN107403710A (en) * | 2017-09-12 | 2017-11-28 | 国网陕西省电力公司延安供电公司 | XRW Novel outdoor fuses |
| CN206849803U (en) * | 2017-05-12 | 2018-01-05 | 东莞市西五电子有限公司 | A kind of fuse of strong applicability |
| CN207303029U (en) * | 2017-09-14 | 2018-05-01 | 国家电网公司 | New 35kVPT once insures |
| CN108565194A (en) * | 2018-06-05 | 2018-09-21 | 王润富 | A kind of fuse being easily installed replacement |
| CN109036999A (en) * | 2018-08-21 | 2018-12-18 | 林春芳 | A kind of high-tension fuse |
| CN209169099U (en) * | 2018-12-24 | 2019-07-26 | 四川大钿科技发展有限公司 | A kind of fuse being easily installed for solar energy |
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2020
- 2020-04-29 CN CN202010357263.3A patent/CN111403248B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2183083A (en) * | 1935-11-13 | 1939-12-12 | Westinghouse Electric & Mfg Co | Drop-out open cut-out fuse |
| CA1066747A (en) * | 1976-09-13 | 1979-11-20 | Kenneth E. Hanke | Enclosing structure for a high voltage electric fuse |
| KR20080068566A (en) * | 2007-01-18 | 2008-07-23 | 제이에스알 가부시끼가이샤 | Radiation-sensitive resin composition, interlayer insulating film and microlens, and method for producing the same |
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| CN103137377A (en) * | 2011-11-22 | 2013-06-05 | 大连金州电器有限公司 | Fuse isolation switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331537A (en) * | 2020-10-31 | 2021-02-05 | 贵州电网有限责任公司 | Lightning-protection fuse |
| CN112349562A (en) * | 2020-10-31 | 2021-02-09 | 贵州电网有限责任公司 | Novel double-column type drop-out fuse |
| CN112331537B (en) * | 2020-10-31 | 2022-04-22 | 贵州电网有限责任公司 | Lightning-protection fuse |
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| Publication number | Publication date |
|---|---|
| CN111403248B (en) | 2021-12-17 |
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