CN201918341U - Power supply lightning protection device capable of achieving over-heat protection and over-current protection - Google Patents
Power supply lightning protection device capable of achieving over-heat protection and over-current protection Download PDFInfo
- Publication number
- CN201918341U CN201918341U CN2010206768604U CN201020676860U CN201918341U CN 201918341 U CN201918341 U CN 201918341U CN 2010206768604 U CN2010206768604 U CN 2010206768604U CN 201020676860 U CN201020676860 U CN 201020676860U CN 201918341 U CN201918341 U CN 201918341U
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- protection device
- slide plate
- lightning protection
- chip varistor
- over
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Abstract
The utility model discloses a power supply lightning protection device capable of achieving over-heat protection and over-current protection, which comprises a voltage-sensitive chip, a fixing bracket and a failure detection device, wherein the voltage-sensitive chip is arranged at the inner part of the fixing bracket; a tripping point of the failure detection device is arranged in the middle position of the voltage-sensitive chip; the failure protection device comprises a tripping part and an indicator sliding plate; one end of the tripping part is provided with a moving contact; the moving contact passes through through-holes on the indicator sliding plate and the fixing bracket; the tripping point is welded in the middle position of the voltage-sensitive chip in a low melting point alloying manner; the moving contact is an elastic body; the indicator sliding plate is arranged on the fixing bracket through the elastic body; and the sliding direction of the indicator sliding plate is opposite to the sprung direction of the moving contact. Compared with the prior art, the power supply lightning protection device has the advantages that the electric connection between the power supply lightning protection device and a line can be cut off within the minimum time, and an alarm can be given to a user at the same time.
Description
Technical field
The utility model relates to a kind of lightning protection device, particularly a kind ofly realizes overheated and lightning protection device for electric power overcurrent protection.
Background technology
Surge protector is a kind of low-voltage variation device commonly used; under normal circumstances; it is in high impedance status; in case and circuit is because of thunderbolt or other reason when surge occurring; its meeting conducting in the extremely short time; lightning current or overvoltage are introduced the earth by earth connection, come equipment on the protection circuit with this.When surge protector causes deterioration because of a variety of causes; the interior chip varistor of surge protector this moment can swash acute heating, thereby makes the trip gear action in the surge protector, makes the disengaging of surge protector and circuit; prevent surge protector " short circuit ", make the line accident extension.
In order to realize above-mentioned functions, occur the surge protector of various structure already on the existing market, but all generally adopt chip varistor corner dropout mode.Though this kind mode has realized the effect of protection circuit under the thunderbolt situation to a certain extent; but because of the corner of its trip point at chip varistor; and the corner of chip varistor is not its fastest place of temperature rising, so trip gear can not move in the shortest time.So also there is certain potential safety hazard in it.And existing surge protector, also existing it to have warning system can not be synchronous with the time of taking place to lose efficacy, and the user can not in time obtain the problem of alarm signal.
The utility model content
In order to overcome the defective of prior art, the utility model provides a kind of trip point in the chip varistor center, can the action of threading off take place in the shortest time; And its warning system that has can be sent a kind of of alarm signal immediately and realize overheated and lightning protection device for electric power overcurrent protection when above-mentioned dropout action takes place.
A kind ofly realize overheated and lightning protection device for electric power overcurrent protection; comprise: chip varistor, fixed support and failure detection device; described chip varistor is arranged at described fixed support inside, and the trip point of described failure detection device is arranged on the chip varistor center.
Preferably, failure detection device comprises release member and indication slide plate, one end of described release member is provided with a movable contact spring, and movable contact spring passes the through hole on indication slide plate and the fixed support, is welded on the chip varistor center as the mode of trip point with low-melting alloy.
Preferably, described movable contact spring is an elastomer.
Preferably, the indication slide plate is arranged on the fixed support by elastomer, and the direction of indication slide plate slides is opposite with the direction that flicks of movable contact spring.
Preferably, the size of the through hole on described indication slide plate and the fixed support is all greater than the size of described movable contact spring.
Compared with prior art, the utlity model has following advantage:
The first, chip varistor center, trip point set-point, and the rising of chip varistor central temperature is the fastest; And chip varistor sees through low-melting alloy and welds mutually with release member; When the utility model caused deterioration because of a variety of causes, the chip varistor central temperature rose the fastest, and the action of threading off can take place in the shortest time release member, so the utility model is more safe and reliable than other surge protectors.
The second, warning device of the present utility model adopts release member, fixed support to combine with the indication slide plate, and under the normal condition, the indication slide plate restricts by release member, and the safe indicator collet indication the utility model on it is in normal condition; When release member is moved, then indicate slide plate not have restrained force, it is moved under the effect of elastomeric material, exposes the warning indicator collet on the fixed support, and the user is warned.It can be told warning message to the user in time.
Description of drawings
Fig. 1 is an exploded view of the present utility model;
Fig. 2 is the schematic diagram of normal condition of the present utility model;
Fig. 3 carries out the inefficacy schematic diagram of overtemperature protection for the utility model;
Fig. 4 carries out the inefficacy schematic diagram of overcurrent protection for the utility model.
Embodiment
As Fig. 1, Fig. 2, a kind ofly realize that overheated and lightning protection device for electric power overcurrent protection comprises: chip varistor 1, fixed support 2, spring 3, electrode copper sheet 6, failure detection device, failure detection device comprise dropout copper sheet 4, indication slide plate 5; Fixed support 2 is provided with a warning indicator collet 22, scribbles redness on it; One guide-track groove 21 also is set on it; And its center is provided with first square opening 23.The center of chip varistor 1 is provided with a product solder side 11; Dropout copper sheet 4 front ends are provided with a movable contact spring 41.Indication slide plate 5 is provided with a safe indicator collet 51, scribbles green on it.Chip varistor 1 is fixed on the inside of fixed support 2, and first square opening, 23 both centers at the center of the product solder side 11 of chip varistor 1 and fixed support 2 overlap; One end of electrode copper sheet 6 is connected with chip varistor 1.Indication slide plate 5 is installed on the guide-track groove 21 on the fixed support 2; And between indication slide plate 5 and the fixed support 2 two springs 3 are set respectively up and down; And the centre bit of indication slide plate 5 is equipped with second party mouth 52, in as Fig. 2 position, second square opening 52 and support bracket fastened first square opening 23 at the center of indication slide plate 5, the product solder side 11 three centers of chip varistor coincide together, and the area of first square opening 23 and second square opening 52 is all greater than the area of movable contact spring 41.And the movable contact spring 41 of dropout copper sheet 4 passes the square opening in the indication slide plate 5, is welded on the product solder side of chip varistor 1, and this weld uses the low temperature soldering to connect.And electrode copper sheet 4 constitutes electric loop with chip varistor 1, dropout copper sheet 4.
The utility model is connected in parallel on the single line of electrical network when reality is used, as the live wire of electrical network, or the zero line in the electrical network.And the live wire of a termination electrical network of dropout copper sheet 4, perhaps zero line; Electrode copper sheet 6 connects protective wire or ground wire.
When reality was used, the user judged from the locational color of this warning indicator collet 22 whether the utility model is in normal state.If the user sees redness from this position, then be this failure of apparatus; If the user sees green from this position, then be in this device normal condition.
As Fig. 2 is product figure under the normal condition.Under normal circumstances, because the movable contact spring 41 of dropout copper sheet 4 has blocked the square opening 52 at the center of indication slide plate 5, make it stiff, its safe indicator collet 51 overlaps with warning indicator collet 21, what then see from warning indicator collet 21 positions is green, then product is a normal condition, and the devices such as power supply that promptly have the utility model device are under the normal operational environment.
As Fig. 3, when the utility model caused deterioration because of a variety of causes, the voltage that is added in electrode copper sheet 6 and dropout copper sheet 4 two ends can become big.It the excessive situation of electric current by electrode copper sheet 6, chip varistor 1 and dropout copper sheet 4 may occur, thereby the situation that the temperature that causes chip varistor 1 raises, and the rising of the temperature of the center of chip varistor is the fastest, so the temperature of the product solder side 11 of the center of chip varistor 1 reaches the fusing point of low temperature tin the soonest, in the shortest time, the movable contact spring 41 of dropout copper sheet 4 disconnects rapidly with the pad of the product solder side 11 of chip varistor 1; Because dropout copper sheet 4 is whippy copper sheet material, so it also can hold in simultaneously rapid resilience; So far, being electrically connected between the utility model and the circuit is cut off.After dropout copper sheet 4 flicked, indication slide plate 5 had not had restraining force, was installed in two springs, the 3 rapid resiliences between fixed support 2 and the indication slide plate 5, and promoted indication slide plate 5 moving linearlies.At this moment, safe indicator collet 51 leaves from warning indicator collet 21, and what then see from warning indicator collet 21 positions is red, represents the utility model to lose efficacy.Like this, the utility model had both played superheat protecting function, had cut off being electrically connected of the utility model and circuit, prevented the utility model " short circuit ", made the line accident extension.Report to the police by 21 couples of users of warning indicator collet again simultaneously.
Except the situation of Fig. 3, situation as Fig. 4 also may appear, be that the utility model is when running into thunderbolt, when the big electric current of its generation flows to chip varistor 1 by dropout copper sheet 4, elliptical aperture limit 42 in the dropout copper sheet 4, it is the most weak end of dropout copper sheet, under the impact of big electric current, in a single day the most weak end of dropout copper sheet 4 holds when can't stand big electric current, can disconnect, dropout copper sheet 4 can be held in rapid resilience, and movable contact spring 41 is still on chip varistor 1, so far, being electrically connected between the utility model and the circuit is cut off.After dropout copper sheet 4 flicked, indication slide plate 5 had not had restraining force, was installed in two springs, the 3 rapid resiliences between fixed support 2 and the indication slide plate 5, and promoted indication slide plate 5 moving linearlies.At this moment, safe indicator collet 51 leaves from warning indicator collet 21, and what then see from warning indicator collet 21 positions is red, and representative products lost efficacy.Like this, the utility model had both played the overcurrent protection effect, had cut off being electrically connected of the utility model and circuit, prevented the utility model " short circuit ", made the line accident extension.Report to the police by 21 couples of users of warning indicator collet again simultaneously.
The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this utility model yet and only is described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiment are chosen and specifically described to this specification, is in order to explain principle of the present utility model and practical application better, thereby the technical field technical staff can utilize the utility model well under making.The utility model only is subjected to the restriction of claims and four corner and equivalent.More than disclosed only be several specific embodiments of the application, 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. realize lightning protection device for electric power overheated and overcurrent protection for one kind; it is characterized in that; comprise: chip varistor, fixed support and failure detection device, described chip varistor are arranged at described fixed support inside, and the trip point of described failure detection device is arranged on the chip varistor center.
2. a kind of overheated and lightning protection device for electric power overcurrent protection realized according to claim 1; it is characterized in that; failure detection device comprises release member and indication slide plate; one end of described release member is provided with a movable contact spring; movable contact spring passes the through hole on indication slide plate and the fixed support, is welded on the chip varistor center as the mode of trip point with low-melting alloy.
3. a kind of overheated and lightning protection device for electric power overcurrent protection realized according to claim 2 is characterized in that described movable contact spring is an elastomer.
4. a kind of overheated and lightning protection device for electric power overcurrent protection realized according to claim 2 is characterized in that the indication slide plate is arranged on the fixed support by elastomer, and the direction of indication slide plate slides is opposite with the direction that flicks of movable contact spring.
5. a kind of overheated and lightning protection device for electric power overcurrent protection realized according to claim 2 is characterized in that, the size of the through hole on described indication slide plate and the fixed support is all greater than the size of described movable contact spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206768604U CN201918341U (en) | 2010-12-23 | 2010-12-23 | Power supply lightning protection device capable of achieving over-heat protection and over-current protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206768604U CN201918341U (en) | 2010-12-23 | 2010-12-23 | Power supply lightning protection device capable of achieving over-heat protection and over-current protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918341U true CN201918341U (en) | 2011-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206768604U Expired - Fee Related CN201918341U (en) | 2010-12-23 | 2010-12-23 | Power supply lightning protection device capable of achieving over-heat protection and over-current protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638029A (en) * | 2012-03-29 | 2012-08-15 | 武汉维京网络科技有限公司 | Multifunctional power source lightning protection module based on common tin soldering tripping points |
-
2010
- 2010-12-23 CN CN2010206768604U patent/CN201918341U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638029A (en) * | 2012-03-29 | 2012-08-15 | 武汉维京网络科技有限公司 | Multifunctional power source lightning protection module based on common tin soldering tripping points |
| CN102638029B (en) * | 2012-03-29 | 2014-07-30 | 武汉维京网络科技有限公司 | Multifunctional power source lightning protection module based on common tin soldering tripping points |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |