CN114373653A - Expansion fuse - Google Patents
Expansion fuse Download PDFInfo
- Publication number
- CN114373653A CN114373653A CN202210252597.3A CN202210252597A CN114373653A CN 114373653 A CN114373653 A CN 114373653A CN 202210252597 A CN202210252597 A CN 202210252597A CN 114373653 A CN114373653 A CN 114373653A
- Authority
- CN
- China
- Prior art keywords
- bimetallic strip
- conductive
- insulating
- metal
- plate
- 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.)
- Granted
Links
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 64
- 239000002184 metal Substances 0.000 claims description 64
- 230000000712 assembly Effects 0.000 claims description 19
- 238000000429 assembly Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims 1
- 230000005389 magnetism Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 description 14
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 10
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- URQWOSCGQKPJCM-UHFFFAOYSA-N [Mn].[Fe].[Ni] Chemical compound [Mn].[Fe].[Ni] URQWOSCGQKPJCM-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- UTICYDQJEHVLJZ-UHFFFAOYSA-N copper manganese nickel Chemical group [Mn].[Ni].[Cu] UTICYDQJEHVLJZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/70—Resetting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/70—Resetting means
- H01H2037/705—Resetting means wherein the switch cannot be closed when the temperature is above a certain value
Abstract
The invention discloses an expansion fuse, which comprises an insulating shell, a sealing cover, a wiring assembly, a conductive jacket, a neodymium magnet, a bimetallic strip passive layer, a bimetallic strip active layer, a conductive bulge, an electric shock assembly and a rubber block, wherein the sealing cover is detachably arranged on the front surface and the back surface of the insulating shell, the conductive jacket is fixed on the inner wall of the insulating shell, the bimetallic strip is clamped on the inner side of the conductive jacket, and the bimetallic strip is formed by riveting the bimetallic strip passive layer and the bimetallic strip active layer. The passive layer of the bimetallic strip in the bimetallic strip is adsorbed by the neodymium magnet, so that the bimetallic strip cannot be bent after being electrified and heated, when the temperature of the bimetallic strip is higher than the Curie temperature of the bimetallic strip, the bimetallic strip loses magnetism instantly, the magnetic force of the neodymium magnet on the bimetallic strip disappears instantly, the bimetallic strip accumulates elastic force to bend the bimetallic strip to break a circuit, the specificity that the temperature of the bimetallic strip reaches the Curie temperature of the bimetallic strip and loses magnetism instantly is utilized, the circuit can be broken instantly, and the reaction is very sensitive.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to an expansion type fuse.
Background
A fuse, an element for breaking a circuit protection circuit device when a current exceeds a rated value, generally uses a low melting point conductive wire as a fusing member, and there is also a fuse using a bimetal to function as the fusing member at present;
at present, in a fuse, a bimetallic strip is bent along with the rise of temperature, so that a contact of a circuit is disconnected, and because the deformation of the bimetallic strip is influenced by the temperature, the contact of a current contact is poor easily, and the circuit is cut off and the current is closed in an instant which cannot be done, so that the expansion fuse which can counteract the elastic force of the bimetallic strip through magnetic force and is matched with the Curie temperature to achieve instant reaction so as to overcome the defects needs to be provided.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, due to the fact that a fusing part is very thin, the current passing capacity of the fusing part is unstable along with the rise of temperature, connection is easy to be unstable, and a circuit can be disconnected after the fusing part is melted, so that reaction is insensitive, so that the expansion fuse is provided.
In order to achieve the purpose, the invention adopts the following technical scheme: an expansion fuse comprises an insulating shell, a sealing cover, a wiring assembly, a conductive jacket, a neodymium magnet, a bimetallic strip passive layer, a bimetallic strip active layer, a conductive protrusion, an electric shock assembly and a rubber block, wherein the sealing cover is detachably mounted on the front surface and the back surface of the insulating shell; the both sides of insulating casing are fixed with a plurality of wiring subassembly, and the inner wall fixed mounting of insulating casing has the subassembly of electrocuteeing, and the inboard of insulating casing is fixed with the block rubber of restriction bimetallic strip deformation.
Preferably, the conductive jacket, the bimetallic strip and the electric shock assembly form a current loop, and the two wiring assemblies are respectively connected in series to the electric shock assembly and the conductive jacket.
Further preferably, the number of the conductive jacket, the two bimetallic strips and the electric shock assembly is two, and the two bimetallic strips are symmetrically arranged above and below the neodymium magnet.
Preferably, the connecting assembly is provided with two connecting assemblies, two electric contact assemblies are connected to one of the connecting assemblies in parallel, and two conductive jackets are connected to the other connecting assembly in parallel.
Preferably, the number of the wiring assemblies is three, two electric contact assemblies are connected to one wiring assembly in parallel, and two conductive jackets are connected to the other two wiring assemblies in series respectively.
Further preferably, the electric shock assembly comprises a metal plate, a metal cylinder, a conductive spring, a metal block, a metal rod and a groove, the metal plate is fixedly mounted on the inner wall of the insulating shell, the metal cylinder penetrates through and is fixed on the metal plate, the conductive spring is fixedly mounted on the surface of the metal plate, the metal block is fixedly mounted at one end of the conductive spring, the metal rod is fixedly mounted in the middle of the metal block, the groove is formed in the surface of the metal block, and the metal plate is connected with the wiring assembly.
Further preferably, the wiring subassembly includes the insulating box, electrically conducts frame, current conducting plate, insulation board, screw thread ring sum screw thread ejector pin, and the both sides of insulating casing are fixed with a plurality of insulating box, and one side of insulating box is run through and is fixed with electrically conducts the frame, and the inboard fixed mounting of insulating box has the current conducting plate, and the inboard of insulating box articulates through the hinge has the insulation board, runs through in the insulating box and is fixed with the screw thread ring, and the middle screw thread of screw thread ring runs through threaded ejector pin, and the one end of electrically conducting frame is connected with electrically conductive clamp cover and the subassembly of electrocuting of electric shock respectively.
Preferably, the conductive protrusion abuts against the groove of the metal block, the metal rod movably penetrates through the middle of the metal tube, and the conductive spring is sleeved on the periphery of the metal tube.
Preferably, the movable angle of the insulating plate is 80 degrees, one end of the threaded ejector rod is spherical, and one end of the threaded ejector rod abuts against the insulating plate.
Further preferably, the end of the insulating plate is provided with a corner bend, the angle of the corner is 40-50 degrees, and the end of the conductive frame is connected in series with the conductive plate.
The invention has the beneficial effects that:
1. the passive layer of the bimetallic strip in the bimetallic strip is adsorbed by the neodymium magnet, so that the bimetallic strip cannot be bent after being electrified and heated, when the temperature of the bimetallic strip is higher than the Curie temperature of the bimetallic strip, the bimetallic strip loses magnetism instantly, the magnetic force of the neodymium magnet on the bimetallic strip disappears instantly, the bimetallic strip bends to break a circuit by accumulated elasticity, the circuit can be broken instantly by the specific property that the temperature of the bimetallic strip reaches the Curie temperature of the bimetallic strip and loses magnetism instantly, and the reaction is very sensitive;
2. when the temperature of bimetallic strip is less than its curie temperature, bimetallic strip and neodymium magnet's suction produce in the twinkling of an eye, and the bimetallic strip breaks down the switch-on circuit in the twinkling of an eye, closed circuit that can be quick to can make full use of, the circuit wiring is stable can be ensured to bimetallic strip's thickness, has the advantage that resets rapidly, the circuit is stable.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a first embodiment of the overall structure of the present invention;
FIG. 3 is a schematic view of the overall structure of the first embodiment of the present invention in use;
FIG. 4 is a schematic cross-sectional view of a second embodiment of the overall structure of the present invention;
FIG. 5 is a first schematic diagram illustrating a second embodiment of the present invention;
FIG. 6 is a second schematic view of the overall structure of the second embodiment of the present invention in a second usage state;
FIG. 7 is a schematic cross-sectional view of a third embodiment of the overall structure of the present invention;
FIG. 8 is a schematic view showing a state of use of the overall structure of the third embodiment of the present invention;
FIG. 9 is an enlarged schematic view of the wiring assembly of the present invention;
fig. 10 is an enlarged view of the contact assembly of the present invention.
In the figure: insulating shell 1, sealed lid 2, wiring subassembly 3, insulating box 31, electrically conductive frame 32, conducting plate 33, insulating board 34, screw thread ring 35, screw thread ejector pin 36, electrically conductive jacket 4, neodymium magnet 5, bimetallic strip passive layer 6, bimetallic strip active layer 7, electrically conductive arch 8, electric shock subassembly 9, metal sheet 91, metal cylinder 92, electrically conductive spring 93, metal block 94, metal pole 95, recess 96, rubber block 10.
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.
The first embodiment:
referring to fig. 1, 2, 3, 9 and 10, an expansion fuse comprises an insulating shell 1, a sealing cover 2, a wiring assembly 3, a conductive jacket 4, a neodymium magnet 5, a bimetallic strip passive layer 6, a bimetallic strip active layer 7, a conductive protrusion 8, an electric shock assembly 9 and a rubber block 10, wherein the sealing cover 2 is detachably mounted on the front surface and the back surface of the insulating shell 1, the conductive jacket 4 is fixed on the inner wall of the insulating shell 1, bimetallic strips are clamped on the inner side of the conductive jacket 4, the bimetallic strips are formed by riveting the bimetallic strip passive layer 6 and the bimetallic strip active layer 7, the neodymium magnet 5 for adsorbing the bimetallic strips is fixedly mounted between the sealing covers 2, and the conductive protrusion 8 is integrally formed at one end of the bimetallic strip active layer 7; a plurality of wiring assemblies 3 are fixed on two sides of an insulating shell 1, an electric shock assembly 9 is fixedly installed on the inner wall of the insulating shell 1, and a rubber block 10 for limiting the deformation of the bimetallic strip is fixed on the inner side of the insulating shell 1;
during the concrete implementation, bimetallic strip passive layer 6 in the bimetallic strip is adsorbed by neodymium magnet 5, make bimetallic strip circular telegram be heated the back unable crooked, when the temperature of bimetallic strip is greater than its curie temperature, the bimetallic strip loses magnetism in the twinkling of an eye, neodymium magnet 5 disappears to the magnetic force of bimetallic strip in the twinkling of an eye, the elasticity that the bimetallic strip was accumulated makes its crooked open circuit, utilize bimetallic strip temperature to reach its self curie temperature and lose magnetism in the twinkling of an eye and cooperate the magnetic force of neodymium magnet 5 again, can realize open circuit in the twinkling of an eye, the reaction is very sensitive.
Preferably, the electric shock assembly 9 comprises a metal plate 91, a metal cylinder 92, a conductive spring 93, a metal block 94, a metal rod 95 and a groove 96, the metal plate 91 is fixedly installed on the inner wall of the insulating shell 1, the metal cylinder 92 penetrates and is fixed on the metal plate 91, the conductive spring 93 is fixedly installed on the surface of the metal plate 91, the metal block 94 is fixedly installed at one end of the conductive spring 93, the metal rod 95 is fixedly installed in the middle of the metal block 94, the groove 96 is formed in the surface of the metal block 94, the metal plate 91 is connected with the wiring assembly 3, the conductive protrusion 8 abuts against the groove 96 of the metal block 94, the metal rod 95 movably penetrates through the middle of the metal cylinder 92, and the conductive spring 93 is sleeved on the periphery of the metal cylinder 92;
in specific implementation, the conductive spring 93 is supported between the metal block 94 and the metal plate 91, and the elastic force of the conductive spring 93 can buffer the impact force of the conductive protrusion 8 on the metal block 94, so that the metal block 94 and the conductive protrusion 8 are always attached tightly, and the stable wiring is ensured when the circuit is closed.
Preferably, the wiring assembly 3 comprises an insulation box 31, a conductive frame 32, a conductive plate 33, an insulation plate 34, a threaded ring 35 and a threaded mandril 36, wherein a plurality of insulation boxes 31 are fixed on two sides of the insulation shell 1, the conductive frame 32 penetrates through and is fixed on one side of the insulation box 31, the conductive plate 33 is fixedly installed on the inner side of the insulation box 31, the insulation plate 34 is hinged on the inner side of the insulation box 31 through a hinge, the threaded ring 35 penetrates and is fixed in the insulation box 31, the threaded mandril 36 penetrates through the middle thread of the threaded ring 35, one end of the conductive frame 32 is respectively connected with the conductive jacket 4 and the electric shock assembly 9, the movable angle of the insulation plate 34 is 80 degrees, one end of the threaded mandril 36 is spherical, one end of the threaded mandril 36 abuts against the insulation plate 34, the end of the insulation plate 34 is provided with a corner bend, the angle of the corner is 40-50 degrees, and the end of the conductive frame 32 is connected in series with the conductive plate 33;
during specific implementation, the insulating plate 34 can move, the edge of the insulating plate 34 is extruded on an external wire, so that the external wire is always tightly attached to the conducting plate 33, the external wire can be conveniently connected to work, the threaded ejector rod 36 is used for moving up and down in the threaded ring 35, the threaded ejector rod 36 pushes the insulating plate 34 to rotate, and the insulating plate 34 can be ensured to clamp the external wire tightly.
Preferably, one conductive jacket 4, one bimetallic strip and one electric shock assembly 9 are arranged, the conductive jacket 4, the bimetallic strip and the electric shock assembly 9 form a current loop, and the two wiring assemblies 3 are respectively connected in series on the electric shock assembly 9 and the conductive jacket 4;
when the current overload protection circuit is specifically implemented, current overload protection is realized by matching a bimetallic strip with the small-size neodymium magnet 5, the size of the insulating shell 1 in the fuse can be greatly reduced, and the current overload protection circuit has the advantages of small size, wide application, low production cost and short manufacturing period, and is suitable for general circuits.
Second embodiment:
the difference from the first embodiment is that, referring to fig. 4-6, two conductive jackets 4, two bimetallic strips and two electric shock assemblies 9 are provided, the two bimetallic strips are symmetrically arranged above and below the neodymium magnet 5, two wiring assemblies 3 are provided, the two electric shock assemblies 9 are connected in parallel to one wiring assembly 3, and the two conductive jackets 4 are connected in parallel to the other wiring assembly 3;
when the circuit breaker is specifically implemented, the current overload protection is carried out through the thermal expansion of the two bimetallic strips, the two bimetallic strips are connected in parallel in the circuit, the circuit is required to be disconnected simultaneously by the two bimetallic strips, the current can be completely disconnected, the current can be closed only by triggering one bimetallic strip, the circuit breaker has the advantages of more accurate circuit protection and more sensitive and quick circuit closing, and the circuit breaker is suitable for being used in a circuit environment needing to quickly recover power supply and accurate power failure.
The third embodiment:
the difference from the first embodiment is that, referring to fig. 7-8, two conductive jackets 4, two bimetallic strips and two electric shock assemblies 9 are provided, the two bimetallic strips are symmetrically arranged above and below the neodymium magnet 5, three wiring assemblies 3 are provided, the two electric shock assemblies 9 are connected in parallel to one of the wiring assemblies 3, and the two conductive jackets 4 are respectively connected in series to the other two wiring assemblies 3;
during specific implementation, current overload protection is carried out through the bimetallic strips, the two bimetallic strips are connected in series in the circuit, any one of the bimetallic strips is disconnected, the current is completely disconnected, the two bimetallic strip closed circuits can enable the current to be closed, and the circuit has the advantages of sensitive response and strong protection capability and is suitable for circuits needing high safety.
The bimetallic strip passive layer can be made of iron, the bimetallic strip active layer matched with copper materials forms a bimetallic strip, or the material of the active layer is manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, nickel and the like, and the bimetallic strip passive layer matched with nickel-iron alloy materials forms a bimetallic strip.
When the bimetallic strip overload protection device is used, firstly, current enters through the conducting plate 33, flows through the conducting frame 32, the conducting jacket 4, the bimetallic strip passive layer 6, the bimetallic strip active layer 7, the conducting protrusion 8, the metal block 94, the metal rod 95, the metal cylinder 92 and the metal plate 91 and finally flows out through the other conducting plate 33, when the current reaches a rated value, the temperature of the bimetallic strip passive layer 6 exceeds the distance temperature of the bimetallic strip passive layer 6, the attraction of the neodymium magnet 5 to the bimetallic strip passive layer 6 disappears instantly, the bimetallic strip passive layer 6 and the bimetallic strip active layer 7 bend due to expansion, the bimetallic strip passive layer 6 is abutted against the rubber block 10, the conducting protrusion 8 is separated from the metal block 94, a circuit is disconnected, and the overload protection of the circuit is realized.
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 (10)
1. An expansion fuse comprises an insulating shell (1), a sealing cover (2), a wiring assembly (3), a conductive jacket (4), a neodymium magnet (5), a bimetallic strip passive layer (6), a bimetallic strip active layer (7), a conductive bulge (8), an electric shock assembly (9) and a rubber block (10), wherein the sealing cover (2) is detachably mounted on the front surface and the back surface of the insulating shell (1), and the conductive jacket (4) is fixed on the inner wall of the insulating shell (1);
the method is characterized in that: bimetallic strips are clamped on the inner side of the conductive clamping sleeve (4), the bimetallic strips are formed by riveting a bimetallic strip passive layer (6) and a bimetallic strip active layer (7), a neodymium magnet (5) for adsorbing the bimetallic strips is fixedly arranged between the sealing covers (2), and a conductive bulge (8) is integrally formed at one end of the bimetallic strip active layer (7);
the two sides of the insulating shell (1) are fixed with a plurality of wiring assemblies (3), the inner wall of the insulating shell (1) is fixedly provided with an electric shock assembly (9), and the inner side of the insulating shell (1) is fixed with a rubber block (10) for limiting deformation of the bimetallic strip.
2. Expansion fuse according to claim 1, characterised in that there is one of the conductive jacket (4), the bimetallic strip and the contact assembly (9), the conductive jacket (4), the bimetallic strip and the contact assembly (9) forming a current loop, and the two wiring assemblies (3) being connected in series to the contact assembly (9) and the conductive jacket (4), respectively.
3. Expansion fuse according to claim 1, characterized in that the conducting jacket (4), bimetallic strip and contact assembly (9) are provided in two, symmetrically arranged above and below the neodymium magnet (5).
4. An expansion fuse according to claim 3, characterised in that the wiring module (3) is provided in two, two contact modules (9) being connected in parallel to one of the wiring modules (3) and two conductive jackets (4) being connected in parallel to the other wiring module (3).
5. An expansion fuse according to claim 3, characterised in that the wiring module (3) is provided with three, two contact modules (9) connected in parallel to one of the wiring modules (3) and two conductive jackets (4) connected in series to the other two wiring modules (3) respectively.
6. An expansion fuse according to any one of claims 2 to 5, characterized in that the electric contact assembly (9) comprises a metal plate (91), a metal cylinder (92), a conductive spring (93), a metal block (94), a metal rod (95) and a groove (96), the metal plate (91) is fixedly installed on the inner wall of the insulating housing (1), the metal cylinder (92) penetrates through and is fixed on the metal plate (91), the conductive spring (93) is fixedly installed on the surface of the metal plate (91), the metal block (94) is fixedly installed at one end of the conductive spring (93), the metal rod (95) is fixedly installed in the middle of the metal block (94), the groove (96) is formed in the surface of the metal block (94), and the metal plate (91) is connected with the wiring assembly (3).
7. An expansion fuse according to any one of claims 2 to 5, wherein the wiring assembly (3) comprises an insulating box (31), a conductive frame (32), a conductive plate (33), an insulating plate (34), a threaded ring (35) and a threaded ejector rod (36), a plurality of insulating boxes (31) are fixed on two sides of the insulating housing (1), the conductive frame (32) penetrates through one side of each insulating box (31), the conductive plate (33) is fixedly mounted on the inner side of each insulating box (31), the insulating plate (34) is hinged on the inner side of each insulating box (31) through a hinge, the threaded ring (35) penetrates through the insulating box (31), the threaded ejector rod (36) penetrates through the middle thread of each threaded ring (35), and one end of each conductive frame (32) is connected with the conductive jacket (4) and the electric shock assembly (9) respectively.
8. An expansion fuse according to claim 6, characterised in that the conductive protrusion (8) is seated in a groove (96) in the metal block (94), the metal rod (95) is inserted through the middle of the metal barrel (92), and the conductive spring (93) is fitted around the periphery of the metal barrel (92).
9. An expansion fuse according to claim 7, characterised in that the insulating plate (34) has an angle of action of 80 °, the threaded stud (36) has one end which is spherical and the threaded stud (36) has one end which abuts against the insulating plate (34).
10. Expansion fuse according to claim 7, characterized in that the end of the insulating plate (34) is provided with a corner bend with an angle of 40 ° -50 °, the end of the conducting frame (32) being connected in series to the conducting plate (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252597.3A CN114373653B (en) | 2022-03-15 | 2022-03-15 | Expansion fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252597.3A CN114373653B (en) | 2022-03-15 | 2022-03-15 | Expansion fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114373653A true CN114373653A (en) | 2022-04-19 |
| CN114373653B CN114373653B (en) | 2022-05-31 |
Family
ID=81146929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210252597.3A Expired - Fee Related CN114373653B (en) | 2022-03-15 | 2022-03-15 | Expansion fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114373653B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114973576A (en) * | 2022-05-06 | 2022-08-30 | 徐州工业职业技术学院 | Fire alarm device with self-checking system |
| CN117392800A (en) * | 2023-10-16 | 2024-01-12 | 营口天成消防设备有限公司 | Electrical fire monitoring detector for line protection |
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|---|---|---|---|---|
| EP0232172A2 (en) * | 1986-02-05 | 1987-08-12 | Tai-Her Yang | Switching arrangement with thermal and magnetic functions |
| CN2101937U (en) * | 1991-10-12 | 1992-04-15 | 吴纬 | Electrothermic magnetic safety device with bearing rod |
| CN2149014Y (en) * | 1993-01-01 | 1993-12-08 | 章柏元 | Hand-operated resetting safe apparatus for electric equipment, circuit |
| JP2009176429A (en) * | 2008-01-21 | 2009-08-06 | Autonetworks Technologies Ltd | Relay and control method of relay |
| CN209544245U (en) * | 2019-04-11 | 2019-10-25 | 扬州五岳电器有限公司 | A kind of thermal protector convenient for connecting wire |
| CN211980510U (en) * | 2020-05-09 | 2020-11-20 | 扬州五岳电器有限公司 | Thermal protector machine convenient to it is fixed |
-
2022
- 2022-03-15 CN CN202210252597.3A patent/CN114373653B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0232172A2 (en) * | 1986-02-05 | 1987-08-12 | Tai-Her Yang | Switching arrangement with thermal and magnetic functions |
| CN2101937U (en) * | 1991-10-12 | 1992-04-15 | 吴纬 | Electrothermic magnetic safety device with bearing rod |
| CN2149014Y (en) * | 1993-01-01 | 1993-12-08 | 章柏元 | Hand-operated resetting safe apparatus for electric equipment, circuit |
| JP2009176429A (en) * | 2008-01-21 | 2009-08-06 | Autonetworks Technologies Ltd | Relay and control method of relay |
| CN209544245U (en) * | 2019-04-11 | 2019-10-25 | 扬州五岳电器有限公司 | A kind of thermal protector convenient for connecting wire |
| CN211980510U (en) * | 2020-05-09 | 2020-11-20 | 扬州五岳电器有限公司 | Thermal protector machine convenient to it is fixed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114973576A (en) * | 2022-05-06 | 2022-08-30 | 徐州工业职业技术学院 | Fire alarm device with self-checking system |
| CN117392800A (en) * | 2023-10-16 | 2024-01-12 | 营口天成消防设备有限公司 | Electrical fire monitoring detector for line protection |
| CN117392800B (en) * | 2023-10-16 | 2024-04-02 | 营口天成消防设备有限公司 | Electrical fire monitoring detector for line protection |
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| CN114373653B (en) | 2022-05-31 |
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Effective date of registration: 20220620 Address after: 518000 longxige 9K, Longsheng Shidai building, Dalang street, Longhua new area, Shenzhen, Guangdong Patentee after: Shenzhen shengyuanda Technology Co.,Ltd. Address before: 518000 1006, building a, Zhong'an Science Park, No. 117, Huaning Road, Xinshi community, Dalang street, Longhua District, Shenzhen, Guangdong Patentee before: Shenzhen Jingshi Zhizao Technology Co.,Ltd. |
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