CN108429234B - Surge protection device - Google Patents
Surge protection device Download PDFInfo
- Publication number
- CN108429234B CN108429234B CN201810400888.6A CN201810400888A CN108429234B CN 108429234 B CN108429234 B CN 108429234B CN 201810400888 A CN201810400888 A CN 201810400888A CN 108429234 B CN108429234 B CN 108429234B
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- Prior art keywords
- insulating
- surge protection
- structural member
- protection device
- conductive
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 230000015556 catabolic process Effects 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/20—Electrothermal mechanisms with fusible mass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Fuses (AREA)
Abstract
The invention discloses a surge protection device, which is used for protecting electric equipment from overvoltage damage and comprises two external electrodes which are oppositely arranged and connected with an external circuit, two internal electrodes which are arranged between the two external electrodes and are oppositely arranged to form an operation interval, a plurality of electrode plates and a plurality of insulating spacing pieces which are arranged between an adjacent external electrode and an internal electrode, wherein each electrode plate and each insulating spacing piece are alternately arranged at intervals; the surge protection device further comprises two control mechanisms for reducing breakdown voltage between the adjacent external electrodes and the internal electrodes, an elastic switch for connecting or disconnecting the two control mechanisms, and a tripping mechanism which is arranged in the operation section and is used for connecting or disconnecting the two internal electrodes, wherein the tripping mechanism triggers the elastic switch to disconnect the two control mechanisms when the two internal electrodes are disconnected. The invention has the characteristics of small volume, rapid cutting action, high reliability and the like.
Description
Technical Field
The invention belongs to the field of electrical equipment, and particularly relates to a surge protection device.
Background
Currently, surge protection devices are commonly used to protect electrical systems and electrical equipment from damage caused by lightning or overvoltage.
In order to avoid failure of electrical equipment due to short circuit or fire disaster, the conventional surge protection device is usually provided with an external tripping device or a tripping device arranged on a trigger loop. However, the former has a large space occupation and cannot meet the requirements in a narrow and densely-arranged place of components and parts, and the latter can solve the requirements of space limitation, but after the trigger circuit is disconnected, the surge protection device sometimes does not truly disconnect the electrical equipment from the power grid. When a surge passes, the voltage at two ends of the surge protection device can be multiplied, so that the electrical equipment is damaged.
Disclosure of Invention
The invention aims to provide a surge protection device, which aims to solve the problem of low reliability when the current surge protection device cuts off the circuit connection of electrical equipment.
The present invention is achieved by a surge protection device for protecting an electrical apparatus from overvoltage, comprising two external electrodes disposed opposite to each other and connected to an external circuit, two internal electrodes disposed between the two external electrodes and disposed opposite to each other to form an operation section, and a plurality of electrode sheets and a plurality of insulating spacers disposed between an adjacent one of the external electrodes and one of the internal electrodes, each of the electrode sheets and each of the insulating spacers being alternately disposed at intervals; the surge protection device further comprises two control mechanisms for reducing breakdown voltage between the adjacent external electrodes and the internal electrodes, an elastic switch for connecting or disconnecting the two control mechanisms, and a tripping mechanism which is arranged in the operation section and is used for connecting or disconnecting the two internal electrodes, wherein the tripping mechanism triggers the elastic switch to disconnect the two control mechanisms when disconnecting the two internal electrodes.
Further, the tripping mechanism comprises an elastic piece arranged in the operation interval, welding flux which has conductive property and is melted after the temperature reaches the thermal melting point of the elastic piece, and a conductive structural piece which is welded with the two internal electrodes through the welding flux, wherein the conductive structural piece is positioned in the operation interval and electrically conducts the two internal electrodes; the elastic restoring force of the elastic piece has a tendency of driving the conductive structural piece to be separated from the operation section so as to disconnect the two internal electrodes, and the elastic piece is in an energy storage state when the conductive structural piece is positioned in the operation section.
Further, the trip mechanism further includes an insulating structural member made of an insulating material, the conductive structural member is connected with the elastic member through the insulating structural member, and the insulating structural member has an insulating portion disposed in the operation section when the conductive structural member is separated from the operation section.
Further, the insulating structural member is provided with a conductive hole which is arranged in a penetrating manner and used for placing the conductive structural member, and the conductive structural member is located in the operation section when the conductive hole corresponds to the operation section.
Further, the trip mechanism further includes an insulating housing, the insulating housing is provided with a holding cavity for holding the conductive structural member and the insulating structural member and in sliding fit with the insulating structural member, the insulating housing is provided with a first through hole between the internal electrode and the holding cavity and a second through hole between the internal electrode and the holding cavity, the first through hole is used for the corresponding internal electrode to be electrically connected to the conductive structural member when the conductive structural member is located in the operation interval, and the second through hole is used for the corresponding internal electrode to be electrically connected to the conductive structural member when the conductive structural member is located in the operation interval.
Further, the tripping mechanism further comprises a guide rod connected with the insulating structural member, the insulating shell is provided with a guide hole communicated with the accommodating cavity and slidingly matched with the guide rod, and the opening direction of the guide hole is parallel to the direction of the elastic restoring force of the elastic member.
Further, the insulating shell is provided with a connecting hole on the cavity wall of the accommodating cavity, the insulating structural member comprises a connecting piece extending into the connecting hole, and the elastic piece is abutted with the connecting piece in the connecting hole; the connecting piece with the quantity of connecting hole all is equipped with two, two the connecting piece respectively with one the connecting hole cooperation, the guide bar is located two between the connecting piece, the connecting hole link up to insulating housing's outside, elastic component one end is located in the connecting hole, the other end is located insulating housing's outside.
Further, the surge protection device further comprises a bottom plate which is horizontally laid, a first side plate which is vertically arranged on the bottom plate, and a second side plate which is arranged opposite to the first side plate, wherein each external electrode, each internal electrode, each electrode plate and each insulating spacer are fixed between the first side plate and the second side plate, the two control mechanisms and the tripping mechanism are respectively positioned on two sides of the first side plate, and one end of the elastic piece positioned outside the insulating shell is abutted to the second side plate.
Further, a trigger groove which is communicated with the space between the operation section and the outside is formed in the first side plate, and the insulating structural member comprises a trigger rod which is arranged in the trigger groove and triggers the elastic switch to be disconnected under the drive of the elastic piece.
Further, a guide groove for communicating the operation section with the external space is formed in the second side plate, and the free end of the guide rod penetrates through the guide groove and is located outside the second side plate.
Compared with the prior art, the invention has the technical effects that: the two external electrodes of the surge protection device are connected to the circuit of the electrical equipment to be protected, and when no overvoltage exists in the circuit, the tripping mechanism conducts the two internal electrodes. When the electric equipment is struck by lightning or is over-voltage, the surge protection device starts to work, the external electrode, the internal electrode, the electrode sheet and the conductive structural member generate heat through the current thermal effect, the temperature of the tripping mechanism 30 is continuously increased through heat conduction, and when the temperature reaches the working temperature of the tripping mechanism, the tripping mechanism starts to work, namely, the electric connection between the two internal electrodes is disconnected and the elastic switch is triggered, so that the elastic switch disconnects the electric connection between the two control mechanisms, and the whole circuit is disconnected. And finally, the electric equipment is effectively protected from being damaged by overvoltage, and the reliability is high. The tripping mechanism is arranged at the middle position of the surge protection device, so that the tripping action of the tripping mechanism is quicker and more reliable, and the working reliability of the surge protection device is improved.
Drawings
Fig. 1 is a schematic structural diagram of a surge protection device according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the surge protection device of fig. 1 taken along A-A.
Fig. 3 is a schematic diagram of the operating principle of the surge protection device of fig. 1.
Fig. 4 is a schematic structural view of the trip mechanism of fig. 1.
Fig. 5 is a half-sectional view of the trip mechanism of fig. 4 in a direction parallel to the elastic restoring force of the elastic member.
Fig. 6 is a schematic structural view of the insulating housing of fig. 5.
Fig. 7 is a schematic view of the structure of the insulating structure of fig. 5.
Fig. 8 is a schematic view of a surge protection device formed by arranging three surge protection devices in parallel.
Fig. 9 is a schematic diagram of the Y-electrical connection of the three surge protection devices of fig. 8.
The correspondence between the reference numbers and names in the drawings is as follows:
| name of the name | Reference numerals | Name of the name | Reference numerals |
| Surge protection device | 100 | Conductive hole | 323 |
| Internal electrode | 12 | Insulating shell | 31 |
| External electrode | 11 | First perforation | 36 |
| Electrode plate | 22 | Second perforation | 36a |
| Insulating spacer | 21 | Guide rod | 35 |
| Control mechanism | 40 | Guide hole | 314 |
| Elastic switch | 41 | Connecting hole | 313 |
| Tripping mechanism | 30 | Connecting piece | 321 |
| Elastic piece | 37 | First side plate | 51 |
| Conductive structural member | 33 | Second side plate | 52 |
| Insulating structural member | 32 | Trigger lever | 322 |
| Guide groove | 521 | Mounting plate | 102 |
| Surge protection device | 101 |
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "vertical," "parallel," "bottom," "angular," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements.
Referring to fig. 1 to 3, a surge protection device 100 according to an embodiment of the present invention provides a protection solution for an on-board power supply of a low voltage system. The surge protection device 100 according to the embodiment of the present invention is used for protecting electrical equipment from overvoltage, and includes two external electrodes 11 disposed opposite to each other and connected to an external circuit, two internal electrodes 12 disposed between the two external electrodes 11 and disposed opposite to each other to form an operation zone, and a plurality of electrode sheets 22 and a plurality of insulating spacers 21 disposed between adjacent ones of the external electrodes 11 and the internal electrodes 12. Each of the electrode sheets 22 is alternately arranged with each of the insulating spacers 21 at intervals. The surge protection device 100 further comprises two control mechanisms 40 for reducing breakdown voltage between the adjacent external electrodes 11 and the internal electrodes 12, an elastic switch 41 for connecting or disconnecting the two control mechanisms 40, and a trip mechanism 30 provided in the operation section for connecting or disconnecting the two internal electrodes 12, wherein the trip mechanism 30 triggers the elastic switch 41 to disconnect the two control mechanisms 40 when disconnecting the two internal electrodes 12. In one aspect of this embodiment, the electrode sheet 22 is a graphite electrode sheet 22, and the thickness of the graphite electrode sheet 22 is preferably 1.3mm. In another aspect of this embodiment, adjacent one outer electrode 11 and one inner electrode 12 and a plurality of electrode tabs 22 and insulating spacers 21 disposed therebetween together with the control mechanism 40 form the body of a graphite gap type surge protector (not shown). The control mechanism 40 includes a plurality of high voltage capacitors electrically connected to the electrode pads 22, a pin pattern not shown disposed between adjacent high voltage capacitors), and a circuit board pattern not shown electrically connecting the high voltage capacitors and the pins). In one aspect of this embodiment, the electrode tabs 22 are alternately arranged with the insulating spacers 21 and are fixed by screws.
The two outer electrodes 11 of the surge protection device 100 are both connected to the circuit of the electrical equipment to be protected, and when there is no overvoltage in the circuit, the trip mechanism 30 turns on the two inner electrodes 12. When the electrical equipment is struck by lightning or is over-voltage, the surge protection device 100 operates, the external electrode 11, the internal electrode 12, the electrode sheet 22 and the conductive structural member 33 generate heat through the current thermal effect, the temperature of the tripping mechanism 30 is continuously increased through heat conduction, and when the temperature reaches the operation temperature of the tripping mechanism 30, the tripping mechanism 30 starts operation, namely, the electric connection between the two internal electrodes 12 is disconnected and the operation of the elastic switch 41 is triggered, so that the elastic switch 41 disconnects the electric connection between the two control mechanisms 40, and the whole circuit is disconnected. And finally, the electric equipment is effectively protected from being damaged by overvoltage, and the reliability is high. The trip mechanism 30 is disposed at the middle position of the surge protection device 100, so that the trip action of the trip mechanism 30 is quicker and more reliable, and the reliability of the operation of the surge protection device 100 is increased.
Referring to fig. 4 to 6, the trip mechanism 30 includes an elastic member 37 disposed in the operation area, a solder (not shown) having a conductive property and melting after reaching a thermal melting point, and a conductive structure member 33 welded with the two internal electrodes 12 by the solder, wherein the conductive structure member 33 electrically connects the two internal electrodes 12 when being located in the operation area; the elastic restoring force of the elastic member 37 has a tendency to drive the conductive structural member 33 out of the operation section to disconnect the two internal electrodes 12, and the elastic member 37 is in an energy storage state when the conductive structural member 33 is located in the operation section. In one aspect of this embodiment, the solder has a melting point less than 200 degrees and may be an environmentally friendly solder.
The trip mechanism 30 further includes an insulating structure 32 made of an insulating material, the conductive structure 33 is connected to the elastic member 37 through the insulating structure 32, and the insulating structure 32 has an insulating portion disposed in the operation section when the conductive structure 33 is separated from the operation section. In one aspect of this embodiment, the insulating structure 32 is an insulating plate made of an insulating material, which may be an organic insulating material, an inorganic insulating material, or a hybrid insulating material.
Referring to fig. 7, the insulating structure 32 is provided with a conductive hole 323 that is disposed through and is used for placing the conductive structure 33, and the conductive structure 33 is located in the working space when the conductive hole 323 corresponds to the working space. The shape of the conductive structural member 33 is adapted to the shape of the conductive hole 323, and the conductive structural member 33 conducts the two internal electrodes 12 through the conductive hole 323.
The trip mechanism 30 further includes an insulating housing 31, the insulating housing 31 is provided with a receiving cavity (not shown) for receiving the conductive structural member 33 and the insulating structural member 32 and slidably matching with the insulating structural member 32, the insulating housing 31 is provided with a first through hole 36 located between one of the internal electrodes 12 and the receiving cavity, and a second through hole 36a located between the other internal electrode 12 and the receiving cavity, the first through hole 36 provides the conductive structural member 33 to be electrically connected to the corresponding internal electrode 12 when the conductive structural member 33 is located in the operation interval, and the second through hole 36a provides the corresponding internal electrode 12 to be electrically connected to the conductive structural member 33 when the conductive structural member 33 is located in the operation interval. The central axes of the first and second through holes 36, 36a and the conductive holes 323 are collinear. In a spatial position, the conductive aperture 323 is located between the first through hole 36 and the second through hole 36 a. The conductive structure member 33 is rectangular, and two ends thereof extend outwards through the first through hole 36 and the second through hole 36a respectively, and are electrically connected to the two internal electrodes 12 through solder.
The trip mechanism 30 further comprises a guide rod 35 connected with the insulating structural member 32, the insulating housing 31 is provided with a guide hole 314 communicated with the accommodating cavity and slidingly engaged with the guide rod 35, and the opening direction of the guide hole 314 is parallel to the direction of the elastic restoring force of the elastic member 37. The insulation board can slide stably in the accommodating cavity by the cooperation of the guide rod 35 and the guide hole 314, so that the electric connection between the conductive structural member 33 and the two internal electrodes 12 can be accurately cut off when the solder is melted.
The insulating housing 31 has a connection hole 313 formed on a wall of the accommodating cavity, the insulating structural member 32 includes a connecting member 321 extending into the connection hole 313, and the elastic member 37 abuts against the connecting member 321 in the connection hole 313; the number of the connecting pieces 321 and the number of the connecting holes 313 are two, the two connecting pieces 321 are respectively matched with one connecting hole 313, the guide rod 35 is positioned between the two connecting pieces 321, the connecting holes 313 penetrate through to the outside of the insulating shell 31, one end of the elastic piece 37 is positioned in the connecting holes 313, and the other end of the elastic piece is positioned outside the insulating shell. The two elastic members 37 are respectively supported on two sides of the guide rod 35, so that the insulating structural member 32 is stressed uniformly and cut-off rapidly in the sliding process, and the surge protection device 100 can timely respond to overvoltage by matching with the guide of the guide rod 35, and has high reliability. In one aspect of this embodiment, the resilient member 37 is a spring that is axially compressible.
The surge protection device 100 further includes a bottom plate (not shown) horizontally arranged, a first side plate 51 vertically arranged on the bottom plate, and a second side plate 52 arranged opposite to the first side plate 51, wherein each of the external electrodes 11, each of the internal electrodes 12, each of the electrode pads 22, and each of the insulating spacers 21 is fixed between the first side plate 51 and the second side plate 52, the two control mechanisms 40 and the trip mechanism 30 are respectively located at two sides of the first side plate 51, and one end of the elastic member 37 located outside the insulating housing 31 is abutted against the second side plate 52.
The first side plate 51 is provided with a trigger slot (not shown) for communicating the working space with the external space, and the insulating structure 32 includes a trigger rod 322 disposed in the trigger slot and triggered to open by the elastic switch 41 under the driving of the elastic member 37. The second side plate 52 is provided with a guide groove 521 for communicating the working space with the external space, and the free end of the guide rod 35 slides in the guide groove 521.
The surge protection device 100 provided in this embodiment has the characteristics of fast switching-off operation, reliable operation, small volume, large throughput, low limiting voltage, high reliability and stability, etc. The surge protection device 100 provided in this embodiment also has high safety and stability, and a fast thermal trip capability.
Referring to fig. 8-9, in another aspect of an embodiment of the present invention, there is also provided a surge protection device 101, i.e., three surge protection devices 100 can be used in combination. Specifically, three surge protection devices 100 are disposed in parallel on the mounting plate 102, one of the external electrodes 11 of each of the surge protection devices 100 is electrically connected to each other, and the other of the external electrodes 11 of each of the surge protection devices 100 is electrically connected to an external circuit, thereby forming a Y-type electrically connected surge protection system.
The three surge protection devices 100 arranged in parallel and electrically connected in a Y-shape can be applied to a low-voltage power supply system to protect against surges of indirect lightning, direct lightning or other transient overvoltage suffered by electrical equipment, and have protection modes of opposite phase, opposite ground, opposite neutral line, neutral line-to-ground, combinations thereof, and the like. Not only can multiple modes of protection be provided, each mode of protection can provide surge protection device 100, but also can provide Y-shaped, fully symmetrical protection.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A surge protection device for protecting electrical equipment from overvoltage damage, characterized by: the device comprises two external electrodes which are oppositely arranged and connected with an external circuit, two internal electrodes which are oppositely arranged between the two external electrodes to form an operation interval, a plurality of electrode plates and a plurality of insulating spacing pieces which are adjacently arranged between one external electrode and one internal electrode, wherein each electrode plate and each insulating spacing piece are alternately arranged at intervals; the surge protection device further comprises two control mechanisms for reducing breakdown voltage between the adjacent external electrodes and the internal electrodes, an elastic switch for connecting or disconnecting the two control mechanisms, and a tripping mechanism which is arranged in the operation section and is used for connecting or disconnecting the two internal electrodes, wherein the tripping mechanism triggers the elastic switch to disconnect the two control mechanisms when disconnecting the two internal electrodes; the control mechanism comprises a plurality of high-voltage capacitors electrically connected with the electrode plates, pins arranged between adjacent high-voltage capacitors and a circuit board electrically connected with the high-voltage capacitors and the pins.
2. The surge protection device of claim 1, wherein: the tripping mechanism comprises an elastic piece arranged in the operation interval, welding flux which has conductive property and is melted after the temperature reaches the thermal melting point of the elastic piece, and a conductive structural piece welded with the two internal electrodes through the welding flux, wherein the conductive structural piece is positioned in the operation interval and electrically conducts the two internal electrodes; the elastic restoring force of the elastic piece has a tendency of driving the conductive structural piece to be separated from the operation section so as to disconnect the two internal electrodes, and the elastic piece is in an energy storage state when the conductive structural piece is positioned in the operation section.
3. The surge protection device of claim 2, wherein: the trip mechanism further includes an insulating structural member made of an insulating material, the conductive structural member is connected with the elastic member through the insulating structural member, and the insulating structural member has an insulating portion disposed in the operation section when the conductive structural member is separated from the operation section.
4. A surge protection device according to claim 3, wherein: the insulating structural member is provided with a conductive hole which is arranged in a penetrating manner and used for placing the conductive structural member, and the conductive structural member is positioned in the operation section when the conductive hole corresponds to the operation section.
5. A surge protection device according to claim 3, wherein: the tripping mechanism further comprises an insulating shell, wherein the insulating shell is provided with a containing cavity for containing the conductive structural member and the insulating structural member and being in sliding fit with the insulating structural member, the insulating shell is provided with a first perforation between the internal electrode and the containing cavity and a second perforation between the other internal electrode and the containing cavity, the first perforation is used for electrically connecting the corresponding internal electrode to the conductive structural member when the conductive structural member is located in an operation interval, and the second perforation is used for electrically connecting the corresponding internal electrode to the conductive structural member when the conductive structural member is located in the operation interval.
6. The surge protection device of claim 5, wherein: the tripping mechanism further comprises a guide rod connected with the insulating structural member, the insulating shell is provided with a guide hole communicated with the accommodating cavity and slidingly matched with the guide rod, and the opening direction of the guide hole is parallel to the direction of the elastic restoring force of the elastic member.
7. The surge protection device of claim 6, wherein: the insulating shell is provided with a connecting hole on the cavity wall of the accommodating cavity, the insulating structural member comprises a connecting piece extending into the connecting hole, and the elastic piece is in butt joint with the connecting piece in the connecting hole; the connecting piece with the quantity of connecting hole all is equipped with two, two the connecting piece respectively with one the connecting hole cooperation, the guide bar is located two between the connecting piece, the connecting hole link up to insulating housing's outside, elastic component one end is located in the connecting hole, the other end is located insulating housing's outside.
8. The surge protection device of claim 7, wherein: the surge protection device further comprises a bottom plate which is horizontally paved, a first side plate which is vertically arranged on the bottom plate, and a second side plate which is arranged opposite to the first side plate, wherein each external electrode, each internal electrode, each electrode plate and each insulating spacer are fixed between the first side plate and the second side plate, the two control mechanisms and the tripping mechanism are respectively positioned on two sides of the first side plate, and the elastic piece is positioned on one end of the outer part of the insulating shell and is abutted to the second side plate.
9. The surge protection device of claim 8, wherein: the first side plate is provided with a trigger groove which is communicated with the space between the operation section and the outside, and the insulating structural member comprises a trigger rod which is arranged in the trigger groove and triggers the elastic switch to be disconnected under the drive of the elastic piece; the second side plate is provided with a guide groove which is communicated with the operation section and the external space and is used for sliding the free end of the guide rod.
10. A surge protection device, characterized by: comprising three surge protection devices according to any one of claims 1-9 and a mounting plate for mounting three of said surge protection devices, one of said external electrodes of each of said surge protection devices being electrically connected to each other, and the other of said external electrodes of each of said surge protection devices being electrically connected to an external circuit, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400888.6A CN108429234B (en) | 2018-04-28 | 2018-04-28 | Surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400888.6A CN108429234B (en) | 2018-04-28 | 2018-04-28 | Surge protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108429234A CN108429234A (en) | 2018-08-21 |
| CN108429234B true CN108429234B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810400888.6A Active CN108429234B (en) | 2018-04-28 | 2018-04-28 | Surge protection device |
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| Country | Link |
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| CN (1) | CN108429234B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN204696674U (en) * | 2015-05-06 | 2015-10-07 | 厦门宏发开关设备有限公司 | A kind of surge protector through-flow greatly |
| CN107706900A (en) * | 2017-11-20 | 2018-02-16 | 苏州工业园区科佳自动化有限公司 | A kind of switching type power supply lightning protection device of band dropout protection and its application |
| CN208257381U (en) * | 2018-04-28 | 2018-12-18 | 深圳市海鹏信电子股份有限公司 | A kind of surge protection device and surge protection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007125752A1 (en) * | 2006-04-26 | 2007-11-08 | Murata Manufacturing Co., Ltd. | Article provided with feed circuit board |
| US9112346B2 (en) * | 2013-03-14 | 2015-08-18 | Fairchild Semiconductor Corporation | Input power protection |
| US9906017B2 (en) * | 2014-06-03 | 2018-02-27 | Ripd Research And Ip Development Ltd. | Modular overvoltage protection units |
-
2018
- 2018-04-28 CN CN201810400888.6A patent/CN108429234B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN204696674U (en) * | 2015-05-06 | 2015-10-07 | 厦门宏发开关设备有限公司 | A kind of surge protector through-flow greatly |
| CN107706900A (en) * | 2017-11-20 | 2018-02-16 | 苏州工业园区科佳自动化有限公司 | A kind of switching type power supply lightning protection device of band dropout protection and its application |
| CN208257381U (en) * | 2018-04-28 | 2018-12-18 | 深圳市海鹏信电子股份有限公司 | A kind of surge protection device and surge protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108429234A (en) | 2018-08-21 |
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