CN201918721U - Surge protection device for pressure sensitive chip connected with graphite sheet in series - Google Patents
Surge protection device for pressure sensitive chip connected with graphite sheet in series Download PDFInfo
- Publication number
- CN201918721U CN201918721U CN2010206719294U CN201020671929U CN201918721U CN 201918721 U CN201918721 U CN 201918721U CN 2010206719294 U CN2010206719294 U CN 2010206719294U CN 201020671929 U CN201020671929 U CN 201020671929U CN 201918721 U CN201918721 U CN 201918721U
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- CN
- China
- Prior art keywords
- graphite flake
- chip varistor
- metal
- graphite sheet
- pressure sensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a surge protection device for a pressure sensitive chip connected with a graphite sheet in series, which comprises a pressure sensitive chip and a graphite sheet, wherein the graphite sheet is arranged in a graphite sheet rubber covered body; metal devices are respectively arranged at two sides of the graphite sheet rubber covered body; metal structures are also respectively arranged at two sides of the corresponding pressure sensitive chip; and the metal devices at the two sides of the graphite sheet are welded with the metal structures at the two sides of the pressure sensitive chip through welding wires. The welded graphite sheet rubber covered body and the pressure sensitive chip are arranged in a fixed shell; the graphite sheet rubber covered body is connected with an electrode plate; and the pressure sensitive chip is connected with a tripping electrode. The utility model utilizes the form of the pressure sensitive chip connected with the graphite sheet in series to realize the surge protection and solves the technical problems of leakage, follow current and high cost.
Description
Technical field
The utility model relates to a kind of surge protector, particularly a kind of surge protector of chip varistor string graphite flake.
Background technology
(Surge Protective Device is in order to restriction transient overvoltage and a kind of equipment that guides surge current SPD) to surge protector.It not only has lightning protection function, and suppresses the Switching Overvoltage effect in addition.Surge protector is indispensable a kind of device in the electronic equipment lightning protection, and the past often is called " lightning arrester " or " overvoltage protection device " English and is abbreviated as SPD.
The operation principle of surge protector is that the instantaneous overvoltage of scurrying into power line, signal transmssion line is limited in the voltage range that equipment or system can bear, or powerful lightning current is let out the inflow place, protects protected equipment or system not to be hit and damages.
But existing surge protector mainly contains three kinds: the one, adopt chip varistor; The 2nd, adopt discharge tube; The 3rd, adopt piezo-resistance string discharge tube.
First kind shortcoming is to exist leakage current, the resistance of chip varistor is infinitely great in theory, does not have leakage current, but in fact because material material problem and production technology problem, make chip varistor not have also can to exist leakage current under the situation of turn-on action.Leakage current will make the electrical property variation of surge protector greatly, and descend to useful life;
Second kind shortcoming is the phenomenon that has afterflow, and promptly discharge tube can't return to the off-state before releasing after lightning current is released in conducting, and this will cause discharge tube will cause very serious accident to the using electricity system short circuit after the lightning current of releasing;
The third can solve first kind leakage current and second kind afterflow problem, but the cost height.
The utility model content
The purpose of this utility model is to provide a kind of surge protector of chip varistor string graphite flake, mainly is to utilize the form of chip varistor serial connection graphite flake to realize surge protection, has solved the high technical problem of electric leakage, afterflow and cost.
The utility model provides a kind of surge protector of chip varistor string graphite flake; comprise chip varistor and graphite flake; chip varistor and graphite flake are serially connected; graphite flake is positioned at graphite flake encapsulate body; graphite flake encapsulate body both sides respectively are provided with a metal device; the position of corresponding chip varistor both sides also respectively is provided with a metal structure, the metal device of described graphite flake both sides and the welding of the metal structure of chip varistor both sides.
Preferably, also comprise set casing, chip varistor that is serially connected and graphite flake encapsulate body are positioned at set casing.
Preferably, the chip varistor front end is provided with a sheet metal, and the set casing front end is provided with a hole, and described sheet metal passes this hole to stationary housing, set casing connects the dropout electrode of a band metal end in this position, chip varistor and dropout electrode be connected to metalwork and metal end is welded.
Preferably, graphite flake encapsulate body one side also is provided with a metal end-piece, and this metal end-piece is positioned at set casing one side, and set casing also connects an electrode slice that has a metal dististyle, graphite flake encapsulate body and electrode slice be connected to metal end-piece and the welding of metal dististyle.
Preferably, chip varistor and graphite flake are serially connected.
Compared with prior art, there is following technique effect in the utility model:
The utility model is to utilize the form of chip varistor serial connection graphite flake to realize surge protection, and the situation that prevents electric leakage, afterflow takes place, and realizes surge protection, improves the performance of surge protector, and improves its useful life.
Description of drawings
Fig. 1 is the structural representation of the surge protector of a kind of chip varistor string of the utility model graphite flake;
Fig. 2 is the side perspective view of the surge protector of a kind of chip varistor string of the utility model graphite flake;
Fig. 3 is the top perspective structural representation of the surge protector of a kind of chip varistor string of the utility model graphite flake.
Embodiment
The utility model provides a kind of surge protector of chip varistor string graphite flake, comprises chip varistor and graphite flake, and chip varistor and graphite flake are serially connected, and please refer to Fig. 1.
Embodiment 1
Below in conjunction with accompanying drawing, the utility model is done further detailed narration.
Please refer to Fig. 2 and Fig. 3, graphite flake is positioned at graphite flake encapsulate body 1, graphite flake encapsulate body 1 both sides respectively are provided with a metal device 12, the position of corresponding chip varistor 2 both sides also respectively is provided with a metal structure 21, and the metal device 12 of graphite flake encapsulate body 1 both sides connects by the tin wire bond with the metal structure 21 of chip varistor 2 both sides.
Graphite flake encapsulate body 1 one sides also are provided with a metal end-piece 11, this metal end-piece 11 is positioned at set casing 3 one sides, set casing 3 also connects an electrode slice 4 that has a metal dististyle 41, and graphite flake encapsulate body 1 connects by the tin wire bond with metal dististyle 41 with the metal end-piece 11 that is connected to of electrode slice 4.
The utility model adopts and to adopt chip varistor earlier, the leakage phenomenon that chip varistor exists, and the graphite flake of being connected is overcome, and graphite flake access cost is low and do not have an afterflow phenomenon.
More than disclosed only be the application's a specific embodiment, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection range.
Claims (5)
1. the surge protector of a chip varistor string graphite flake; comprise chip varistor and graphite flake; it is characterized in that; chip varistor and graphite flake are serially connected; graphite flake is positioned at graphite flake encapsulate body; graphite flake encapsulate body both sides respectively are provided with a metal device, and the position of corresponding chip varistor both sides also respectively is provided with a metal structure, the metal device of described graphite flake both sides and the welding of the metal structure of chip varistor both sides.
2. the surge protector of a kind of chip varistor string graphite flake as claimed in claim 1 is characterized in that, also comprises set casing, and chip varistor that is serially connected and graphite flake encapsulate body are positioned at set casing.
3. the surge protector of a kind of chip varistor string graphite flake as claimed in claim 1; it is characterized in that; the chip varistor front end is provided with a sheet metal; the set casing front end is provided with a hole; described sheet metal passes this hole to stationary housing; set casing connects the dropout electrode of a band metal end in this position, chip varistor and dropout electrode be connected to metalwork and metal end is welded.
4. the surge protector of a kind of chip varistor string graphite flake as claimed in claim 1; it is characterized in that; graphite flake encapsulate body one side also is provided with a metal end-piece; this metal end-piece is positioned at set casing one side; set casing also connects an electrode slice that has a metal dististyle, graphite flake encapsulate body and electrode slice be connected to metal end-piece and the welding of metal dististyle.
5. the surge protector of a chip varistor string graphite flake comprises chip varistor and graphite flake, it is characterized in that, chip varistor and graphite flake are serially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206719294U CN201918721U (en) | 2010-12-21 | 2010-12-21 | Surge protection device for pressure sensitive chip connected with graphite sheet in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206719294U CN201918721U (en) | 2010-12-21 | 2010-12-21 | Surge protection device for pressure sensitive chip connected with graphite sheet in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918721U true CN201918721U (en) | 2011-08-03 |
Family
ID=44418511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206719294U Expired - Lifetime CN201918721U (en) | 2010-12-21 | 2010-12-21 | Surge protection device for pressure sensitive chip connected with graphite sheet in series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082427A (en) * | 2010-12-21 | 2011-06-01 | 上海雷迅防雷技术有限公司 | Surge protector adopting pressure-sensitive chip and graphite sheet in serial connection |
-
2010
- 2010-12-21 CN CN2010206719294U patent/CN201918721U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082427A (en) * | 2010-12-21 | 2011-06-01 | 上海雷迅防雷技术有限公司 | Surge protector adopting pressure-sensitive chip and graphite sheet in serial connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |