CN109637912B - Fuse protector - Google Patents
Fuse protector Download PDFInfo
- Publication number
- CN109637912B CN109637912B CN201811621553.3A CN201811621553A CN109637912B CN 109637912 B CN109637912 B CN 109637912B CN 201811621553 A CN201811621553 A CN 201811621553A CN 109637912 B CN109637912 B CN 109637912B
- Authority
- CN
- China
- Prior art keywords
- contact
- fuse
- spring
- moving contact
- static
- 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 - Fee Related
Links
- 230000001012 protector Effects 0.000 title abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 42
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 29
- 238000009413 insulation Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims 2
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000000872 buffer Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
-
- 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
- H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
- H01H85/0017—Means for preventing damage, e.g. by ambient influences to the fuse due to vibration or other mechanical forces, e.g. centrifugal forces
-
- 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
- H01H85/0039—Means for influencing the rupture process of the fusible element
- H01H85/0073—Expansion or rupture of the insulating support for the fusible element
-
- 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
- H01H85/36—Means for applying mechanical tension to fusible member
Landscapes
- Fuses (AREA)
Abstract
The invention discloses a fuse, which comprises an insulating porcelain bushing, an upper wiring seat, a lower wiring seat, an upper static contact body, a lower static contact body, an arc extinguishing tube and an upper insulating cylinder, wherein the upper static contact body comprises a contact spring and a contact cover covering the contact spring, the arc extinguishing tube comprises an upper moving contact, a lower moving contact, an arc extinguishing tube spring and a fuse wire, the fuse wire is installed to be electrically connected with the upper moving contact and the lower moving contact so as to enable the arc extinguishing tube spring to be in a compressed state, the top end of the upper insulating cylinder is provided with a clamping part used for supporting the contact spring, the upper insulating cylinder is arranged in the upper moving contact and clamped at the upper end of the upper moving contact through the clamping part, the lower static contact body is installed to be electrically abutted against the lower moving contact so as to enable the contact spring to be in the compressed state, the upper moving contact is. The fuse protector of the invention enables the contact spring to be in a compressed state through the clamping part of the upper insulating cylinder, and also buffers the impact of the upper movable contact on the upper static contact body when the fuse wire is fused, thereby avoiding the explosion of the insulating porcelain bushing.
Description
Technical Field
The invention relates to the technical field of circuit protection devices, in particular to a fuse.
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. Therefore, the protective device is widely applied to high and low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protective devices as a short circuit protector and an overcurrent protector.
However, the structure between the upper and lower fixed contacts of the existing fuse and the upper and lower moving contacts of the arc extinguishing tube is not firm, when the fuse is fused and an electric arc occurs, the fuse cannot withstand the impact force caused by the electric arc, and further, extreme phenomena such as explosion, burnout and the like of the fuse occur, and the service life of the fuse is influenced.
Accordingly, there is a need to provide an improved fuse that at least partially solves the above problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to solve the above problems at least in part, the present invention provides a fuse including:
the upper end of the insulating porcelain sleeve is connected with an upper wiring seat, and the lower end of the insulating porcelain sleeve is connected with a lower wiring seat;
the upper static contact body is positioned at the upper end in the insulating porcelain sleeve and is electrically connected with the upper wiring seat, and the upper static contact body comprises a contact spring and a contact cover covering the contact spring;
the lower static contact body is positioned at the lower end in the insulating porcelain sleeve and is electrically connected with the lower wiring seat;
the arc extinguishing tube is positioned between the upper static contact and the lower static contact and comprises an upper moving contact, a lower moving contact, an arc extinguishing tube spring and a fuse wire, and the fuse wire is installed to be electrically connected with the upper moving contact and the lower moving contact so as to enable the arc extinguishing tube spring to be in a compressed state;
the fuse further comprises an upper insulating cylinder, a clamping portion used for supporting the contact spring is arranged at the top end of the upper insulating cylinder, the upper insulating cylinder is arranged in the upper moving contact and clamped at the upper end of the upper moving contact through the clamping portion, the lower static contact body is arranged to be in electrical abutting joint with the lower moving contact so that the contact spring is in a compression state, the upper moving contact is located between the contact cover and the contact spring, and the contact cover is electrically connected with the upper moving contact.
Preferably, the clamping portion comprises a limiting boss, and the maximum diameter of the limiting boss is smaller than the diameter of the contact spring so as to limit the contact spring.
Preferably, the clamping portion comprises symmetrically arranged lugs, and the lugs are clamped on the upper moving contact.
Preferably, the contact cover is provided with an opening symmetrically along the axial direction of the contact spring, so that the lug can move along the opening when the contact spring is in a compressed state.
Preferably, the upper stationary contact body comprises a connecting stud protruding out of the contact cover, and the connecting stud extends out of the through hole in the top of the insulating porcelain sleeve so as to be electrically connected with the wiring terminal of the upper wiring seat.
Preferably, the lower insulating cylinder is used for accommodating the arc extinguishing tube and is in clearance fit with the arc extinguishing tube.
Preferably, the insulation apparatus further comprises a lower insulation barrel support installed at the bottom of the lower insulation barrel to support the lower insulation barrel.
Preferably, the lower static contact body comprises a lower static contact fixing ring, the lower static contact fixing ring is electrically abutted to the lower moving contact, a threaded connecting hole is formed in the lower static contact fixing ring, and the wiring terminal of the lower wiring base is connected to the threaded connecting hole through a threaded fastener.
Preferably, the lower static contact body comprises a clamping disc, the clamping disc is provided with an installation gap for accommodating the wiring terminal of the lower wiring seat, and the lower static contact fixing ring is installed on the clamping disc, so that the threaded connection hole is arranged corresponding to the installation gap.
Preferably, a plurality of lower fixed contacts extending upwards are uniformly arranged on the lower fixed contact ring, and the lower movable contact is in clamping electrical contact with the plurality of lower fixed contacts.
According to the fuse, when the lower static contact body is electrically abutted to the lower moving contact, the contact spring is in a compressed state through the clamping part of the upper insulating cylinder, when the fuse is fused, the impact of the upper moving contact on the upper static contact body is buffered, and the explosion of the insulating porcelain sleeve is avoided.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles and apparatus of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a front view of a fuse according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a perspective view of an upper insulating cylinder of a fuse according to a preferred embodiment of the present invention;
fig. 4 is a schematic structural view of an upper stationary body of a fuse according to a preferred embodiment of the present invention;
FIG. 5 is a side view of the upper stationary contact shown in FIG. 4;
fig. 6 is a front view of a lower stationary contact fixing ring of a fuse in accordance with a preferred embodiment of the present invention;
fig. 7 is a top view of the lower stationary contact fixing ring shown in fig. 6; and
fig. 8 is a schematic structural view of a catch tray of the fuse according to the preferred embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details set forth herein as are known to those of skill in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to the detailed description and should not be construed as limited to the embodiments set forth herein.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for purposes of illustration only and are not limiting.
In the following, specific embodiments of the invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the invention and do not limit the invention.
As shown in fig. 1 and 2, the fuse according to the present invention includes an insulating porcelain bushing 1, an upper wire holder 2, a lower wire holder 3, an upper stationary contact 4, a lower stationary contact 5, an arc extinguishing tube 6, and an upper insulating cylinder 7.
The upper wiring seat 2 is connected to the upper end of the insulating porcelain sleeve 1, and the lower wiring seat 3 is connected to the lower end of the insulating porcelain sleeve 1. The upper static contact body 4 is positioned at the upper end in the insulating porcelain sleeve 1 and is electrically connected with the upper wiring seat 2, and the lower static contact body 5 is positioned at the lower end in the insulating porcelain sleeve 1 and is electrically connected with the lower wiring seat 3.
The upper stationary contact 4 includes a contact spring 41 and a contact cover 43 covering the contact spring 41. The contact housing 43 is adapted to be electrically connected to an upper movable contact 62 (described in more detail below) of the arc tube 6.
With continued reference to figure 2, an arc tube 6 is positioned between the upper stationary contact 4 and the lower stationary contact 5, the arc tube 6 including an upper movable contact 62, a lower movable contact (not shown), an arc tube spring (not shown), and a fuse 61. A fuse 61 is mounted in electrical communication with the upper movable contact 62 and in electrical communication with the lower movable contact to place the arc tube spring in compression.
Specifically, the arc extinguishing tube 6 generally comprises a middle tube body, an arc extinguishing tube connecting piece 63 is installed at the upper end of the middle tube body, an upper moving contact 62 is in threaded connection with the arc extinguishing tube connecting piece 63, a lower moving contact is sleeved at the middle part of the middle tube body from the lower end of the middle tube body, the lower moving contact is in tight fit with the middle tube body, an arc extinguishing tube spring sleeve is arranged below the lower moving contact, and the arc extinguishing tube spring is in a compression state through connection of a fuse wire 61 and the lower moving contact. The fuse 61 can be blown out when the line is overloaded or short-circuited, so that the line is disconnected, and the purpose of protecting the transformer or the distribution line is achieved.
As shown in fig. 3, the top end of the upper insulating cylinder 7 has a clamping portion 71 for supporting the contact spring 41, and the upper insulating cylinder 7 is disposed in the upper movable contact 62 and clamped at the upper end of the upper movable contact 62 through the clamping portion 71. The lower stationary contact 5 is mounted in electrical contact with the lower movable contact to place the contact spring 41 in a compressed state, and at this time, the upper movable contact 62 is positioned between the contact cover 43 and the contact spring 41, and the contact cover 43 and the upper movable contact 62 are electrically connected.
Therefore, when the lower static contact body 5 is electrically abutted with the lower moving contact, the contact spring 41 is in a compressed state through the clamping part 71 of the upper insulating cylinder 7, the contact cover 43 is electrically connected with the upper moving contact 62, when the fuse wire 61 is fused, the impact of the upper moving contact 62 on the upper static contact body 4 is buffered, and the explosion of the insulating porcelain bushing 1 is avoided.
The catching portion 71 may include a limit boss 711, and a maximum diameter of the limit boss 711 is smaller than a diameter of the contact spring 41 to limit the contact spring 41. Further, the clamping portion 71 includes symmetrically disposed lugs 712, and the lugs 712 are clamped on the upper movable contact 62. Therefore, the upper insulating cylinder 7 is more stably installed in the upper movable contact 62, and the contact spring 41 is further compressed, so that the electrical connection between the contact cover 43 and the upper movable contact 62 is more stable. Further, the contact cover 43 is provided with an opening 431 symmetrically along the axial direction of the contact spring 41, so that during the compression state of the contact spring 41, the lug 712 moves along the opening 431, and finally the contact cover 43 is electrically connected with the upper movable contact 62.
As shown in fig. 4 and 5, the upper stationary contact 4 may specifically include a connection stud 42 protruding out of a contact cover 43. The connecting stud 42 extends out of the through hole at the top of the insulating porcelain bushing 1 to be electrically connected with the wiring terminal of the upper wiring holder 2. Further, the connection stud 42 may be screw-coupled with a connection nut to fix the upper stationary contact 4 to the upper end inside the porcelain insulator 1.
As shown in fig. 6 to 8, the lower stationary contact 5 may specifically include a lower stationary contact fixing ring 51, the lower stationary contact fixing ring 51 is electrically abutted against the lower moving contact, a threaded connection hole 511 is formed in the lower stationary contact fixing ring 51, and a connection terminal of the lower connection socket 3 is connected to the threaded connection hole 511 through a threaded fastener. Therefore, the lower connecting seat 3, the lower static contact 5 and the lower moving contact of the arc extinguishing tube 6 are electrically connected.
Preferably, in order to better support the lower stationary contact fixing ring 51, the lower stationary contact 5 may include a locking plate 52, the locking plate 52 has a mounting notch 521 for accommodating the lower wire holder 3, and the lower stationary contact fixing ring 51 is mounted on the locking plate 52 such that the screw connection hole 511 is disposed corresponding to the mounting notch 521. From this, lower wire holder 3 can pass through the through-hole on the lateral wall of the lower extreme of insulating porcelain 1, be connected with insulating porcelain 1 through the nut, and make lower wire holder 3's binding post stretch into insulating porcelain 1 in, and hold in installation breach 521, and installation breach 521 sets up with threaded connection hole 511 correspondingly, make lower wire holder 3's binding post can be conveniently, accurately be connected to threaded connection hole 511 through the screw in, and then realize lower wire holder 3 and lower static contact 5's electricity be connected.
With reference to fig. 6 and 7, specifically, a plurality of lower fixed contacts 512 extending upward are uniformly disposed on the lower fixed contact fixing ring 51, and the lower movable contacts are electrically abutted with the plurality of lower fixed contacts 512 in an engaging manner. Therefore, the lower static contact 5 is stably and electrically connected with the lower moving contact of the arc extinguishing tube 6.
Preferably, the fuse according to the present invention may further include a lower insulating cylinder 8, and the lower insulating cylinder 8 is adapted to receive the arc-extinguishing tube 6 and is in clearance fit with the arc-extinguishing tube 6. Further preferably, the fuse according to the present invention may further include a lower insulation barrel support 81, the lower insulation barrel support 81 is mounted at the bottom of the lower insulation barrel 8 to support the lower insulation barrel 8, and the plurality of lower stationary contacts 512 may extend into the lower insulation barrel support 81 to be electrically connected with the lower movable contacts.
Preferably, the fuse according to the present invention may further include a sealing assembly installed inside the lower port of the porcelain insulator 1 to support the arc extinguishing tube 6. Specifically, the sealing assembly may include a rubber base 91 and a rubber bottom plate 92, the rubber base 91 is installed inside the lower port of the insulator 1, and the rubber bottom plate 92 is installed at the bottom of the rubber base 91 to seal the fuse for normal use.
Hereinafter, an assembling process of the fuse according to the preferred embodiment of the present invention will be described in detail.
Firstly, an upper stationary contact 4 is arranged in an insulating porcelain sleeve 1, a connecting stud 42 extends out of a through hole in the top of the insulating porcelain sleeve 1, a leather gasket, a copper gasket and a copper nut are sequentially arranged on the connecting stud 42, the copper nut is screwed, the upper stationary contact 4 is positioned at the upper end in the insulating porcelain sleeve 1, a wiring terminal of an upper wiring seat 2 is wound on the residual threads of the connecting stud 42, and the other copper nut is in threaded connection with the connecting stud 42 and screwed; then, the upper insulating cylinder 7, the lower insulating cylinder 8 and the lower insulating cylinder bracket 81 are sequentially arranged, so that the lower end of the contact spring 41 is limited by a limit boss 711 of the clamping part 71 of the upper insulating cylinder 7; the lower fixed contact fixing ring 51 is arranged on the clamping disc 52, so that the lower fixed contact 512 extends into the lower insulating cylinder bracket 81; then, connecting the wiring terminal of the lower wiring base 3 to the lower fixed contact fixing ring 51; continuously loading the arc extinguishing tube 6 into the lower insulating cylinder 8, enabling the arc extinguishing tube to sequentially penetrate through the clamping disc 52 and the lower static contact fixing ring 51, enabling the lower moving contact to be clamped and electrically abutted with the lower static contact 512, enabling the contact spring 41 to be in a compressed state, enabling the upper moving contact 62 to be located between the contact cover 43 and the contact spring 41, and enabling the contact cover 43 to be electrically connected with the upper moving contact 62; finally, the rubber base 91 and the rubber base plate 92 are sequentially loaded. When the fuse wire 61 is fused, the contact spring 41 and the arc-extinguishing tube spring are both relaxed to the original uncompressed state, so that the arc-extinguishing tube 6 is ejected from the lower insulating cylinder 8, and it should be noted that the rubber base 91 and the rubber chassis 92 are both provided with rubber openings for the arc-extinguishing tube 6 to pass through.
According to the fuse, when the lower static contact body is electrically abutted to the lower moving contact, the contact spring is in a compressed state through the clamping part of the upper insulating cylinder, when the fuse is fused, the impact of the upper moving contact on the upper static contact body is buffered, and the explosion of the insulating porcelain sleeve is avoided.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A fuse, comprising:
the upper end of the insulating porcelain sleeve is connected with an upper wiring seat, and the lower end of the insulating porcelain sleeve is connected with a lower wiring seat;
the upper static contact body is positioned at the upper end in the insulating porcelain sleeve and is electrically connected with the upper wiring seat, and the upper static contact body comprises a contact spring and a contact cover covering the contact spring;
the lower static contact body is positioned at the lower end in the insulating porcelain sleeve and is electrically connected with the lower wiring seat, the lower static contact body comprises a lower static contact fixing ring, and a plurality of lower static contacts extending upwards are uniformly arranged on the lower static contact fixing ring;
the arc extinguishing tube is positioned between the upper static contact and the lower static contact and comprises an upper moving contact, a lower moving contact, an arc extinguishing tube spring and a fuse wire, and the fuse wire is installed to be electrically connected with the upper moving contact and the lower moving contact so as to enable the arc extinguishing tube spring to be in a compressed state;
the fuse further comprises an upper insulating cylinder, a clamping portion used for supporting the contact spring is arranged at the top end of the upper insulating cylinder, the upper insulating cylinder is arranged in the upper moving contact and clamped at the upper end of the upper moving contact through the clamping portion, the lower static contact bodies are arranged on the lower static contact bodies in a mode that the lower static contact bodies are in electrical abutting connection with the lower moving contact bodies in a clamping mode, so that the contact spring is in a compression state, the upper moving contact bodies are located between the contact cover and the contact spring, and the contact cover is electrically connected with the upper moving contact bodies.
2. The fuse of claim 1, wherein the snap-in portion includes a limit boss having a maximum diameter smaller than a diameter of the contact spring to limit the contact spring.
3. The fuse of claim 2, wherein the snap-in portions comprise symmetrically arranged lugs that snap onto the upper movable contact.
4. A fuse as per claim 3, characterised in that the contact hood forms openings symmetrically in the direction of the axis of the contact spring, so that the lugs move along the openings during the compression of the contact spring.
5. The fuse of claim 1, wherein the upper stationary contact includes a connection stud protruding out of the contact housing, the connection stud protruding out of a through hole at the top of the porcelain insulator to electrically connect with a terminal of the upper wire holder.
6. The fuse of claim 1, further comprising a lower insulating cylinder for receiving the arc tube and in clearance fit with the arc tube.
7. The fuse of claim 6, further comprising a lower insulation barrel holder mounted at a bottom of the lower insulation barrel to support the lower insulation barrel.
8. The fuse of claim 1, wherein the lower stationary contact fixing ring is provided with a screw connection hole to which the terminal of the lower terminal holder is connected by a screw fastener.
9. The fuse of claim 8, wherein the lower stationary contact includes a retention plate having a mounting notch for receiving the terminal of the lower socket, and the lower stationary contact fixing ring is mounted to the retention plate such that the screw-threaded connection hole is disposed corresponding to the mounting notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811621553.3A CN109637912B (en) | 2018-12-28 | 2018-12-28 | Fuse protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811621553.3A CN109637912B (en) | 2018-12-28 | 2018-12-28 | Fuse protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109637912A CN109637912A (en) | 2019-04-16 |
| CN109637912B true CN109637912B (en) | 2020-09-01 |
Family
ID=66078838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811621553.3A Expired - Fee Related CN109637912B (en) | 2018-12-28 | 2018-12-28 | Fuse protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109637912B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259425B (en) * | 2020-10-26 | 2023-08-29 | 国网湖北省电力有限公司荆州供电公司 | Fuse high temperature resistant insulating sheath and fuse insulating sheath stretching positioning equipment |
| CN118248503B (en) * | 2024-05-28 | 2024-08-09 | 杭州宇诺电子科技有限公司 | Outdoor fuse |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635233B (en) * | 2008-07-24 | 2013-10-02 | 上海市电力公司 | Insulating enclosed type pagoda-shaped fuse |
| US20170059640A1 (en) * | 2015-08-31 | 2017-03-02 | Cooper Technologies Company | System for monitoring a fuse link, fuse tube assembly and fuse cutout including same |
| CN207381358U (en) * | 2017-09-28 | 2018-05-18 | 北京索弗电气科技有限公司 | A kind of plateau type fuse |
-
2018
- 2018-12-28 CN CN201811621553.3A patent/CN109637912B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109637912A (en) | 2019-04-16 |
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Granted publication date: 20200901 |