CN202167433U - Flash barrier of surge protection device - Google Patents
Flash barrier of surge protection device Download PDFInfo
- Publication number
- CN202167433U CN202167433U CN2011202983979U CN201120298397U CN202167433U CN 202167433 U CN202167433 U CN 202167433U CN 2011202983979 U CN2011202983979 U CN 2011202983979U CN 201120298397 U CN201120298397 U CN 201120298397U CN 202167433 U CN202167433 U CN 202167433U
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- Prior art keywords
- left arm
- fuse link
- shell
- cavity
- piece
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Abstract
The utility model discloses a flash barrier of a surge protection device, comprising a shell, a lever and a fuse piece, wherein one end of the fuse piece is hinged with the shell, and the other end of the fuse piece is welded on a conducting electrode piece of a piezoresistor by a tin soldering point; the lever consists of a left arm and a right arm; the intersection position of the root part of the left arm and the root part of the right arm is hinged with the shell; the head part of the left arm is provided with a cavity body for insulating and covering the conducting electrode piece of the piezoresistor; an opening end of the cavity body abuts against the fuse piece; the head part of the right arm is connected with an elastic device; and the cavity body at the head part of the left arm has the trend of maintaining disconnection of the fuse piece and covering the conducting electrode piece of the piezoresistor under the action of the elastic device. when the surge protection device is impacted by surge passing the wave, the temperature of the zinc oxide piezoresistor rises, so that the tin soldering point is melted, simultaneously the fuse piece and the conducting electrode piece of the zinc oxide piezoresistor are disconnected; and the cavity body covers the conducting electrode piece of the piezoresistor, so that the conducting electrode piece of the piezoresistor is completely disconnected and isolated with the fuse piece.
Description
Technical field
The utility model relates to a kind of surge protector, particularly a kind of surge protector arc insulating apparatus.
Background technology
Surge protector (Surge protection Device) 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 effect of surge protector is to be limited in the instantaneous overvoltage of scurrying into power line, signal transmssion line 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.
The form of surge protector is varied, and shown in Figure 1 is a kind of surge protector of the prior art, comprises pedestal 1 and pluggable module 2; Described module 2 comprises shell 3, Zinc-oxide piezoresistor, fuse link 5, lever 6, and the Zinc-oxide piezoresistor (not shown) is arranged in the shell 3, and the left end of lever 6 and module 2 are hinged; The right-hand member of lever 6 is connected with a tension spring 8; Both sides up and down at shell 3 respectively are provided with an electrode pins, and the two poles of the earth of Zinc-oxide piezoresistor link to each other with two electrode pins respectively, particularly; One utmost point of Zinc-oxide piezoresistor links to each other with the electrode pins 7a of shell 3 upsides; Another utmost point of Zinc-oxide piezoresistor links to each other through tin welding spot 9 with an end of fuse link 5, and the other end of fuse link 5 and module 2 are hinged, and this end of fuse link 5 connects the electrode pins 7b of shell 3 downsides through conductive strips 10; On lever 6, be provided with a contact 11, contact 11 props up fuse link 5 and under the effect of tension spring 8, makes fuse link 5 keep the trend of breaking off with tin welding spot 9.
Under the normal condition; As shown in Figure 2, it is too high to have served as unrestrained surge current, when making the temperature of Zinc-oxide piezoresistor be elevated to a certain degree; Tin welding spot 9 fusings; Simultaneously fuse link 5 breaks off with the electrode of Zinc-oxide piezoresistor under the effect of tension spring 8, and the series circuit in the module is cut off, and reaches the purpose of protecting electrical network.
But under some situation, because the restriction of factors such as material, technology is broken off not thorough between fuse link and the Zinc-oxide piezoresistor; It is not fusing fully of tin welding spot; Also make to keep the state that links to each other between the electrode of fuse link and Zinc-oxide piezoresistor, so not only do not have protective effect, also can make the temperature of piezo-resistance increasingly high; Can burn, explode when serious, produce very big danger.
The utility model content
The utility model has overcome above-mentioned deficiency of the prior art, provides a kind of and has been unrestrained surge when impacting, the surge protector arc insulating apparatus that can fuse link and piezo-resistance conductive electrode film be broken off fully.
The technical scheme of the utility model is achieved in that
The surge protector arc insulating apparatus comprises shell, lever; Fuse link, an end and the shell of fuse link are hinged, and the other end of fuse link is welded on the conductive electrode film of piezo-resistance through tin welding spot; Described lever is made up of left arm and right arm; The intersection and the shell of left arm root and right arm root are hinged, and the head of left arm is provided with one in order to isolate and to coat the cavity of piezo-resistance conductive electrode film, and the openend and the fuse link of cavity offset; The head of said right arm is connected with elastic force apparatus, and the cavity of left arm head has the trend that keeps breaking off fuse link and coat the piezo-resistance conductive electrode film under the effect of elastic force apparatus.
As preferably, described cavity is made up of first side plate, second side plate and the top board that connects biside plate, and described second side plate and fuse link offset.
As preferably, between left arm and right arm, be provided with one and carry out spacing baffle plate in order to the openend of closed cavity or to left arm.Fashionable can cavity being closed of left arm meeting of baffle plate and lever isolated the conductive electrode film of piezo-resistance fully, and be safe and reliable.
As preferably; Described elastic force apparatus comprises the signal indicating piece; The upper surface of signal indicating piece and the right arm of lever offset, and the lower surface of signal indicating piece is provided with column, and column is with spring outward; One end of spring and signal indicating piece lower surface offset, and the other end of spring is located on the spring pedestal of shell.
Adopted the principle and the beneficial effect of the utility model of technique scheme to be:
The lever of the utility model arc insulating apparatus is divided into left arm and right arm; Right arm makes lever integral body have under the effect of elastic force apparatus and makes the trend of fuse link and the disconnection of piezo-resistance conductive electrode film, and is provided with one in order to coat the cavity of piezo-resistance conductive electrode film at the head of left arm, when surge protector has been the impact of unrestrained surge; The temperature of Zinc-oxide piezoresistor raises; Make tin welding spot fusing, fuse link breaks off with the conductive electrode film of Zinc-oxide piezoresistor under the effect of left arm cavity and elastic force apparatus simultaneously, and cavity with the conductive electrode film coating of piezo-resistance wherein; Make itself and fuse link break off fully, isolate, avoid the danger that produces blast, burns.
Description of drawings
Configuration state sketch map when Fig. 1 normally uses for surge protector in the prior art;
Fig. 2 is the state diagram of the electrode of fuse link and the Zinc-oxide piezoresistor of surge protector in the prior art when breaking off;
Fig. 3 is a structural representation of the present invention;
State diagram when Fig. 4 is fuse link of the present invention and the disconnection of piezo-resistance conductive electrode film;
Fig. 5 is the structural representation of arc insulating apparatus lever left arm head cavity of the present invention.
Embodiment
The embodiment of the utility model is following:
Embodiment: the surge protector arc insulating apparatus, as shown in Figure 3, comprise shell 1; Lever; Fuse link 2, an end and the shell 1 of fuse link 2 are hinged, and the other end of fuse link 2 is welded on the conductive electrode film 4 of piezo-resistance through tin welding spot 3; Described lever is made up of left arm 5 and right arm 6; The intersection of left arm root and right arm root and shell 1 are hinged, and the head of left arm 5 is provided with one in order to isolate and to coat the cavity of piezo-resistance conductive electrode film 4, and the openend of cavity and fuse link 2 offset; The head of said right arm 6 is connected with elastic force apparatus, and the cavity of left arm head has the trend that keeps breaking off fuse link 2 and coat piezo-resistance conductive electrode film 4 under the effect of elastic force apparatus.
Like Fig. 3, shown in Figure 5, described cavity is made up of first side plate 7, second side plate 8 and the top board 9 that connects biside plate, and described second side plate 8 and fuse link 2 offset.Between left arm 5 and right arm 6, be provided with one and carry out spacing baffle plate 10 in order to the openend of closed cavity or to left arm 5.First side plate 7, second side plate 8, baffle plate 10 residing planes are perpendicular to left arm 5 residing planes, and top board 9 residing plane parallel are in left arm 5 residing planes.
Described elastic force apparatus comprises signal indicating piece 11; The upper surface of signal indicating piece 11 and the right arm of lever 6 offset; The lower surface of signal indicating piece 11 is provided with column 12; Be with spring 13 outside the column 12, an end of spring 13 and signal indicating piece 11 lower surfaces offset, and the other end of spring 13 is located on the spring pedestal 14 of shell.
As shown in Figure 4, when surge protector had been the impact of unrestrained surge, the temperature of Zinc-oxide piezoresistor raise; Make tin welding spot 3 fusings; Simultaneously fuse link 2 breaks off with the conductive electrode film 4 of Zinc-oxide piezoresistor under the effect of left arm cavity and elastic force apparatus, and cavity with conductive electrode film 4 coatings of piezo-resistance wherein makes itself and fuse link 2 break off fully, isolate; Simultaneously; Signal indicating piece 11 is upspring to the signal display window under the effect of spring 13, sends fault-signal, and the prompting relevant personnel can in time find fault and deal with.
Claims (4)
1. the surge protector arc insulating apparatus comprises shell, lever; Fuse link, an end and the shell of fuse link are hinged, and the other end of fuse link is welded on the conductive electrode film of piezo-resistance through tin welding spot; It is characterized in that: described lever is made up of left arm and right arm; The intersection and the shell of left arm root and right arm root are hinged, and the head of left arm is provided with one in order to isolate and to coat the cavity of piezo-resistance conductive electrode film, and the openend and the fuse link of cavity offset; The head of said right arm is connected with elastic force apparatus, and the cavity of left arm head has the trend that keeps breaking off fuse link and coat the piezo-resistance conductive electrode film under the effect of elastic force apparatus.
2. surge protector arc insulating apparatus according to claim 1 is characterized in that: described cavity is made up of the top board of first side plate, second side plate and connection biside plate, and described second side plate and fuse link offset.
3. surge protector arc insulating apparatus according to claim 1 and 2 is characterized in that: between left arm and right arm, be provided with one and carry out spacing baffle plate in order to the openend of closed cavity or to left arm.
4. surge protector arc insulating apparatus according to claim 1; It is characterized in that: described elastic force apparatus comprises the signal indicating piece; The upper surface of signal indicating piece and the right arm of lever offset, and the lower surface of signal indicating piece is provided with column, and column is with spring outward; One end of spring and signal indicating piece lower surface offset, and the other end of spring is located on the spring pedestal of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202983979U CN202167433U (en) | 2011-08-17 | 2011-08-17 | Flash barrier of surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202983979U CN202167433U (en) | 2011-08-17 | 2011-08-17 | Flash barrier of surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167433U true CN202167433U (en) | 2012-03-14 |
Family
ID=45803245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202983979U Expired - Lifetime CN202167433U (en) | 2011-08-17 | 2011-08-17 | Flash barrier of surge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202167433U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448611A (en) * | 2015-12-31 | 2016-03-30 | 德力西电气有限公司 | Thermal separation mechanism and surge protection device |
| CN107946109A (en) * | 2017-12-23 | 2018-04-20 | 珠海德利和电气有限公司 | A kind of arrester arcing protective device |
| 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 |
-
2011
- 2011-08-17 CN CN2011202983979U patent/CN202167433U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448611A (en) * | 2015-12-31 | 2016-03-30 | 德力西电气有限公司 | Thermal separation mechanism and surge protection device |
| CN105448611B (en) * | 2015-12-31 | 2018-01-16 | 德力西电气有限公司 | Hot releasing mechanism and surge protector |
| CN107946109A (en) * | 2017-12-23 | 2018-04-20 | 珠海德利和电气有限公司 | A kind of arrester arcing protective device |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Flash barrier of surge protection device Effective date of registration: 20150106 Granted publication date: 20120314 Pledgee: The Agricultural Bank of Jiaxing branch of Limited by Share Ltd China garshin Pledgor: SELONG ELECTRIC CO., LTD. Registration number: 2015990000014 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CP03 | Change of name, title or address |
Address after: 314006 No. 2056 East Nanxi Road, Zhejiang, Jiaxing Patentee after: Shenlong Electric Co., Ltd. Address before: 314021 No. 2056 East Nanxi Road, Zhejiang, Jiaxing Patentee before: SELONG ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
|
| CX01 | Expiry of patent term |