CN210167317U - Safety isolation device after failure of surge protection device - Google Patents
Safety isolation device after failure of surge protection device Download PDFInfo
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- CN210167317U CN210167317U CN201920763122.4U CN201920763122U CN210167317U CN 210167317 U CN210167317 U CN 210167317U CN 201920763122 U CN201920763122 U CN 201920763122U CN 210167317 U CN210167317 U CN 210167317U
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- fuse
- electrode slice
- link
- fuse link
- division board
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Abstract
The utility model discloses a safety isolation device after surge protector became invalid, its technical scheme main points are including piezo-resistor and set up in the outside shell that holds of piezo-resistor, be provided with the electrode slice on the piezo-resistor, be provided with the fuse-link on the electrode slice, adopt the solder to be connected between electrode slice and the fuse-link, the one end that the electrode slice was kept away from to the fuse-link is provided with the connecting plate, the connecting plate is connected with external circuit, be provided with elasticity between electrode slice and the fuse-link and shelter from the subassembly, when electrode slice and fuse-link fuse, elasticity shelters from and keeps apart between subassembly electrode slice and the fuse-link.
Description
Technical Field
The utility model relates to an electrical equipment field, more specifically the safety isolation device after surge protector inefficacy that says so relates to.
Background
In a low-voltage distribution system, a Surge Protector (SPD) is generally used for protecting overvoltage caused by external influences, such as lightning, when the voltage is overlarge, the electrode plates and the fuse link can be detached to disconnect the whole electric circuit, and an isolation assembly is not arranged in the prior art, so that when a part of the surge protectors are not completely detached, the phenomenon of short circuit of an electric appliance is easily caused, and a fire disaster is caused.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a gush safety isolation device after protector inefficacy, this isolating device can be after electrode slice and fuse link desolder with the two keep apart completely
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a safety isolation device after surge protector inefficacy, includes piezo-resistor and sets up in the outside shell that holds of piezo-resistor, be provided with the electrode piece on the piezo-resistor, be provided with the fuse-link on the electrode piece, have the connection space who supplies electrode piece and fuse-link welded between electrode piece and the fuse-link, adopt the solder to be connected between electrode piece and the fuse-link, be provided with elasticity between electrode piece and the fuse-link and cut off the subassembly, elasticity cuts off the subassembly and disposes elasticity answer mechanism and division board, when electrode piece and fuse-link melt, elasticity cuts off the subassembly and cuts off melting position by the effect of elasticity answer mechanism, elasticity cuts off the subassembly and keeps apart electrode piece and fuse-link.
As a further improvement, the one end that the electrode slice was kept away from to the fuse-link is provided with the connecting plate, the connecting plate is connected with external circuit, elasticity answer mechanism holds the chamber including setting up in the tube-shape spring of the relative both sides of fuse-link, the tube-shape spring holds the chamber side and has seted up the groove of sliding, the tube-shape spring holds the intracavity and is provided with the pressure variable spring, the integration is provided with plug-in components on the division board, plug-in components insert the tube-shape spring and hold the chamber, and the plug-in components lateral part is in the inslot that slides, and when electrode slice and fuse-link disconnection, the division board pressurized variable spring's effect upwards slides and.
As a further improvement, be provided with the piece that protrudes that is used for assisting the slip piece that the division board slided and is used for correcting division board moving direction on the division board, it supplies the removal track that the piece slided to hold to be provided with on the shell, remove the length direction setting that the track held the chamber along the tube-shape spring, the piece that protrudes forms with the division board integration, the piece that protrudes sets up perpendicularly and the piece that protrudes and the lateral wall that holds the shell are laminated mutually with the division board.
As a further improvement, be provided with the guide rail with fuse link looks adaptation on the division board, be provided with the slope on the guide rail, the one end that highly is close to the fuse link by being close to the fuse link on slope reduces to the one end of keeping away from the fuse link gradually.
As a further improvement of the utility model, the solder is metallic tin.
As a further improvement of the utility model, the fuse link and the connecting plate are made of copper.
As a further improvement of the utility model, the raw material of the containing shell is nylon PA 6.
As a further improvement, it supports the piece to be provided with on the shell to hold, support the piece set up in holding the shell up end and with hold the shell lateral wall and be connected, when the division board slides to the one end of keeping away from pressing the variable spring, the division board can offset with supporting the piece.
The utility model has the advantages that:
1. through the setting of division board, can separate electrode slice and fuse-link completely after electrode slice and fuse-link desolder to prevent to cause the emergence of conflagration because electrode slice and fuse-link are not completely separated.
2. Through changing the connecting wire among the prior art into the setting of connecting plate, can be great reduction internal resistance in the use.
3. Through the setting that the chamber was held to the tube-shape spring and became the spring with pressing, can realize sliding of division board to completely isolated electrode slice and division board.
Drawings
FIG. 1 is a schematic perspective view of a safety isolation device;
fig. 2 is an exploded view of a safety isolating device.
Reference numerals: 1. a voltage dependent resistor; 11. an electrode sheet; 12. a fuse link; 2. a housing case; 21. a resisting block; 3. a connecting plate; 4. an elastic force cutting assembly; 41. a separator plate; 42. an elastic return mechanism; 421. a spring receiving cavity; 422. a pressure variable spring; 43. a plug-in; 5. a sliding groove; 6. a sliding sheet; 7. a projecting piece; 8. a moving track; 9. a guide rail.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 2, the safety isolation device after the failure of the surge protector of this embodiment includes a varistor 1 and a housing 2 disposed outside the varistor 1, an electrode plate 11 is disposed on the varistor 1, a fuse link 12 is disposed on the electrode plate 11, a connection space for welding the electrode plate 11 and the fuse link 12 is provided between the electrode plate 11 and the fuse link 12, the electrode plate 11 and the fuse link 12 are connected by using solder, an elastic force cut-off assembly 4 is disposed between the electrode plate 11 and the fuse link 12, the elastic force cut-off assembly (4) is configured with an elastic restoring mechanism 42 and an isolation plate 41, when the electrode plate 11 and the fuse link 12 are melted, the elastic force cut-off assembly 4 cuts off the melted portion under the action of the elastic restoring mechanism 42, and the elastic force cut-off assembly 4 isolates the electrode plate 11 from the fuse link 12.
The varistor 1 is arranged in the accommodating shell 2, the varistor 1 is provided with the electrode plate 11, the electrode plate 11 is connected with the fuse link 12, when external voltage is overlarge, the electrode plate 11 and the fuse link 12 can be subjected to desoldering, a circuit can not form a loop after desoldering, but sometimes the electrode plate 11 and the fuse link 12 are not subjected to desoldering completely after current is overlarge or the electrode plate 11 can be contacted with the fuse link 12 even though the electrode plate 11 and the fuse link 12 are subjected to desoldering completely, if the situation exists, the surge protector can not realize overload protection, in the embodiment, the elastic force cutting component 4 capable of completely isolating the electrode plate 11 from the fuse link 12 after the electrode plate 11 and the fuse link 12 are desoldered is added, the electrode plate 11 and the fuse link 12 can be effectively and completely isolated through the arrangement of the elastic force cutting component 4, so the surge protector is superior to the prior art, the occurrence of fire caused by incomplete isolation of the electrode plate 11 and the fuse link 12 can be effectively prevented.
As a modified specific implementation manner, a connecting plate 3 is arranged at one end of the fuse link 12 far away from the electrode plate 11, the connecting plate 3 is connected with an external circuit, the elastic restoring mechanism 42 includes a cylindrical spring accommodating cavity 421 arranged at two opposite sides of the fuse link 12, a sliding groove 5 is formed in the side surface of the cylindrical spring accommodating cavity 421, a pressure variable spring 422 is arranged in the cylindrical spring accommodating cavity 421, a plug-in unit 43 is integrally arranged on the isolating plate 41, the plug-in unit 43 is inserted into the cylindrical spring accommodating cavity 421, the side part of the plug-in unit 43 is located in the sliding groove 5, and when the electrode plate 11 is disconnected from the fuse link 12, the isolating plate 41 slides upwards under the action of the pressure variable spring 422 to close the connecting space.
In the prior art, the connection wires are mostly in flexible connection, in this embodiment, the flexible connection is changed into hard connection, the hard connection has the advantages that the internal resistance can be greatly reduced in the using process compared with the flexible connection, the cylindrical spring accommodating cavity 421 is fixedly arranged on the upper end surface of the accommodating shell 2, the pressure-variable spring 422 is arranged in the cylindrical spring accommodating cavity 421, the insert 43 is arranged on the isolation plate 41, the insert 43 is inserted into the cylindrical spring accommodating cavity 421, when the electrode plate 11 and the fuse link 12 are welded together, the insert 43 is inserted into the cylindrical spring accommodating cavity 421 (at this time, the pressure-variable spring 422 is in a compressed state), when the voltage is too high, the electrode plate 11 and the fuse link 12 are disconnected after the electrode plate 11 and the fuse link 12 are welded together, the electrode plate 11 and the fuse link 12 are disconnected, (at this time, the pressure-variable spring 422 releases elastic potential energy), the insert 43 is ejected out of the cylindrical spring accommodating cavity 421, the insert, the electrode plate 11 and the fuse link 12 are completely isolated, so that accidents are prevented, the isolating plate 41 can be effectively driven to move through the arrangement of the cylindrical spring accommodating cavity 421 and the pressure variable spring 422, and the isolating plate 41 and the electrode plate 11 can be effectively isolated through the arrangement of the isolating plate 41.
As a modified specific embodiment, the isolation plate 41 is provided with a sliding piece 6 for assisting the isolation plate 41 to slide and a protruding piece 7 for correcting the moving direction of the isolation plate 41, the accommodating shell 2 is provided with a moving rail 8 for the sliding piece 6 to slide, the moving rail 8 is arranged along the length direction of the cylindrical spring accommodating cavity 421, the protruding piece 7 and the isolation plate 41 are integrally formed, the protruding piece 7 is arranged perpendicular to the isolation plate 41, and the protruding piece 7 is attached to the side wall of the accommodating shell 2.
The slide 6 slides in moving track 8, moving track 8 sets up in the side of holding shell 2, when division board 41 slided downwards, slide 6 is spacing in moving track 8 (moving track 8 has restricted the moving direction of slide 6, make slide 6 can only slide in moving track 8), protruding piece 7 slides along the lateral wall that holds shell 2, the lateral wall that holds shell 2 is the plane, slide protruding piece 7 along the lateral wall that holds shell 2, can effectually prevent division board 41 at the in-process direction skew that slides.
As a modified specific embodiment, the partition plate 41 is provided with a guide rail 9 adapted to the fuse link 12, and the guide rail 9 is provided with a slope, and the height of the slope gradually decreases from one end close to the fuse link 12 to one end far from the fuse link 12.
When the fuse link 12 is welded to the electrode tab 11, the fuse link 12 is positioned in the guide rail 9 of the separator 41, and a slope is provided in the guide rail 9 in order to sufficiently weld the electrode tab 11 and the fuse link 12.
As a specific embodiment of the improvement, the solder is metallic tin.
The solder joint of the metal tin is lower than that of the copper, and the metal tin has good conductive performance.
In a modified embodiment, the fuse link 12 and the connecting plate 3 are made of copper.
Compared with other metals, the metal copper has lower cost, smaller internal resistance and good conductive performance.
As a specific embodiment of the improvement, the material of the accommodating shell 2 is nylon PA 6.
The melting point of the soldering tin is 120-140 degrees, and the melting point of the nylon PA6 is 230-280 degrees, so that the nylon PA6 selected for the containing shell 2 can avoid melting of the containing shell 2 while the soldering tin is desoldered.
As a modified specific embodiment, the accommodating shell 2 is provided with a resisting block 21, the resisting block 21 is arranged on the upper end face of the accommodating shell 2 and connected with the side wall of the accommodating shell 2, and when the isolating plate 41 slides towards the end far away from the buckling spring 422, the isolating plate 41 can be resisted with the resisting block 21.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a safety isolation device after surge protector became invalid, includes piezo-resistor (1) and sets up in the outside shell (2) that hold of piezo-resistor (1), its characterized in that: be provided with electrode slice (11) on piezo-resistor (1), be provided with fuse link (12) on electrode slice (11), have between electrode slice (11) and fuse link (12) and supply electrode slice (11) and fuse link (12) welded connection space, adopt the solder connection between electrode slice (11) and the fuse link (12), be provided with elasticity between electrode slice (11) and the fuse link (12) and cut off subassembly (4), elasticity cuts off subassembly (4) and disposes elasticity return mechanism (42) and division board (41), when electrode slice (11) and fuse link (12) melt, elasticity cuts off subassembly (4) and receives the effect of elasticity return mechanism (42) and cuts off the melting point, elasticity cuts off subassembly (4) and keeps apart electrode slice (11) and fuse link (12).
2. A surge protector safety isolation device after failure according to claim 1, wherein: the one end that electrode slice (11) were kept away from in fuse-link (12) is provided with connecting plate (3), connecting plate (3) and external circuit are connected, elastic recovery mechanism (42) hold chamber (421) including the tube-shape spring that sets up in the relative both sides of fuse-link (12), the tube-shape spring holds chamber (421) side and has seted up groove (5) that slides, the tube-shape spring holds and is provided with in chamber (421) and presses variable spring (422), the integration is provided with plug-in (43) on division board (41), plug-in (43) insert tube-shape spring and hold chamber (421), plug-in (43) lateral part is in groove (5) that slides, and when electrode slice (11) and fuse-link (12) disconnection, division board (41) pressurized variable spring (422)'s effect upwards slides and makes the connection space seal.
3. A surge protector safety isolation device after failure according to claim 2, wherein: be provided with on division board (41) both sides and be used for assisting slide (6) that division board (41) slided and with hold protruding piece (7) of shell (2) lateral wall laminating, it supplies slide (6) the removal track (8) that slide to be provided with on shell (2), remove track (8) and hold the length direction setting of chamber (421) along the tube-shape spring, protruding piece (7) and division board (41) integration formation, protruding piece (7) and division board (41) set up perpendicularly and protruding piece (7) and the lateral wall that holds shell (2) laminate mutually.
4. A surge protector safety isolating device after failure according to claim 1, 2 or 3, wherein: be provided with guide rail (9) with fuse link (12) looks adaptation on division board (41), be provided with the slope on guide rail (9), the height on slope is reduced to the one end of keeping away from fuse link (12) by the one end that is close to fuse link (12) gradually.
5. A surge protector safety isolating device after failure according to claim 4, wherein: the solder is metallic tin.
6. A surge protector safety isolating device after failure according to claim 5, wherein: the fuse link (12) and the connecting plate (3) are made of metal copper.
7. A surge protector safety isolation device after failure according to claim 6, wherein: the raw material of the containing shell (2) is nylon PA 6.
8. A surge protector safety isolation device after failure according to claim 7, wherein: the accommodating shell (2) is provided with a supporting block (21), the supporting block (21) is arranged on the upper end face of the accommodating shell (2) and is connected with the side wall of the accommodating shell (2), and when the isolating plate (41) slides towards one end far away from the pressure-variable spring (422), the isolating plate (41) can be supported against the supporting block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763122.4U CN210167317U (en) | 2019-05-25 | 2019-05-25 | Safety isolation device after failure of surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763122.4U CN210167317U (en) | 2019-05-25 | 2019-05-25 | Safety isolation device after failure of surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210167317U true CN210167317U (en) | 2020-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920763122.4U Active CN210167317U (en) | 2019-05-25 | 2019-05-25 | Safety isolation device after failure of surge protection device |
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| Country | Link |
|---|---|
| CN (1) | CN210167317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189965A (en) * | 2019-05-25 | 2019-08-30 | 乐清市亚亨电气有限公司 | A kind of safety insulating device after surge protector failure |
-
2019
- 2019-05-25 CN CN201920763122.4U patent/CN210167317U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189965A (en) * | 2019-05-25 | 2019-08-30 | 乐清市亚亨电气有限公司 | A kind of safety insulating device after surge protector failure |
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