CN204884739U - Hot protection type piezo -resistor - Google Patents
Hot protection type piezo -resistor Download PDFInfo
- Publication number
- CN204884739U CN204884739U CN201520642637.0U CN201520642637U CN204884739U CN 204884739 U CN204884739 U CN 204884739U CN 201520642637 U CN201520642637 U CN 201520642637U CN 204884739 U CN204884739 U CN 204884739U
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- wire pin
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- pin
- resistor
- electrode layer
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Abstract
The utility model relates to a hot protection type piezo -resistor, main function lie in producing high fever after piezo -resistor became invalid, before on fire, can effective, quick supply interruption, prevent burning on fire, including pressure -sensitive chip, shell fragment, encapsulated layer and electrode wire, wire one end and silver -colored face bonding, or through fuse and silver -colored face bonding, form the solder joint, the shell fragment is installed on the base, and one end is applyed elasticity and on the wire, is melted the back at the solder joint, causes the wire bullet to be opened, leaves with silver -colored emaciated face, and shell fragment and pressure -sensitive chip are sealed in the encapsulated layer. Compare with the piezo -resistor who uses in the existing market, the utility model discloses have overheated supply interruption, prevent burning function on fire, compare with temperature fuse, finished product temperature insurance equipment with present traditional general piezo -resistor, the utility model discloses have quicker feedback speed, faster supply interruption prevents burning on fire, can be suitable for, replace current traditional hot protection type piezo -resistor, is fit for the various voltage circuit's of mistake protection.
Description
Technical field
The utility model relates to piezo-resistance, especially a kind of Thermal protection type piezo-resistance.
Background technology
Varistor is according to its superior volt-ampere characteristic, low production cost, be widely used in electronic circuit overvoltage, surge protection, but circuit is because of overvoltage too much in electronic circuit exception, varistor is caused to take place frequently action, occur that performance reduces, lost efficacy, serious time occur that varistor self punctures, combustion phenomena, cause other resistor assembly of periphery to burn, cause larger loss;
The traditional finished product fuse of general employing and piezo-resistance cascaded structure on existing market, as mainly there is following several deficiency:
1, fuse failure, headspace is less, effectively cannot disconnect after the fusing of guarantee insurance silk;
2, temperature transmits feedback speed slowly, is unfavorable for that power supply disconnects in time;
3, product component assembling is complicated, is unfavorable for automation, large-scale production.
Utility model content
The technical problems to be solved in the utility model is: propose a kind of Thermal protection type piezo-resistance, can produce after pressure responsive resistor failure high heat on fire before, cut off the electricity supply more effectively and rapidly, prevent catching fire.
The technical scheme that the utility model adopts is: a kind of Thermal protection type piezo-resistance, comprises base, the chip varistor be arranged on base, parcel base and the encapsulated layer of chip varistor and the wire pin that is connected with external electronic component; Described chip varistor surface-coated has silver electrode layer; One end of described wire is welded with silver electrode layer or is welded with silver electrode layer by fuse, forms solder joint; Described base is also provided with flick mechanism; Described flick mechanism is shell fragment or elater; One end of described flick mechanism contacts with wire pin, after solder joint fusing, make wire pin depart from silver electrode layer.Described solder joint is alloy solder joint.
Further, the number of wire pin described in the utility model is two; Be respectively the first wire pin and the second wire pin; Described one end of the first wire pin is connected with the silver electrode layer of chip varistor side; The other end of the first wire pin extends to encapsulated layer outside; Described one end of the second wire pin is connected with the silver electrode layer of chip varistor opposite side, and contacts with flicking structure; The other end of the second wire pin extends to encapsulated layer outside.
Further say, the number of wire pin described in the utility model is three; Be respectively the first wire pin, the second wire pin and privates pin; The first described wire pin is connected with the silver electrode layer of chip varistor both sides respectively with one end of the second wire pin; The other end of the first wire pin and the second wire pin extends to encapsulated layer outside; One end of described privates pin is connected with the silver electrode layer of chip varistor side; Described privates pin contacts with flick mechanism, and the other end of privates pin extends to encapsulated layer outside.
The beneficial effects of the utility model are: not only product with compact structure, fusible link reaction speed are fast, outward appearance shape rule; And be suitable for automation, large-scale production, Temperature protection shell fragment device can according to piezo-resistance needs, select different size shell fragment, see or not see conductive mechanism, flexible design, to be applicable to occasion extensive.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is the structure side view of Fig. 1;
Fig. 3 is the structural representation of the utility model three wire pins;
Fig. 4 be Fig. 3 flick effect schematic diagram;
Fig. 5 be the utility model two wire pins flick effect schematic diagram;
In figure: 1, the assembly of base and chip varistor; 2, solder joint; 3, shell fragment or elater; 4, wire pin.
Embodiment
With preferred embodiment, the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Shown in Fig. 1,2 is the structure of the piezo-resistance of prior art; Its weak point as described in the background art, no longer repeated description herein.
Fig. 3 and Fig. 4 is the structural representation of the utility model three wire pins, comprises base, the chip varistor be arranged on base, parcel base and the encapsulated layer of chip varistor and the wire pin that is connected with external electronic component; Described chip varistor surface-coated has silver electrode layer; One end of described wire is welded with silver electrode layer or is welded with silver electrode layer by fuse, forms solder joint; Described base is also provided with flick mechanism; Described flick mechanism is shell fragment or elater; One end of described flick mechanism contacts with wire pin, after solder joint fusing, make wire pin depart from silver electrode layer.
In Fig. 3, the number of wire pin is three; Be respectively the first wire pin, the second wire pin and privates pin; The first described wire pin is connected with the silver electrode layer of chip varistor both sides respectively with one end of the second wire pin; The other end of the first wire pin and the second wire pin extends to encapsulated layer outside; One end of described privates pin is connected with the silver electrode layer of chip varistor side; Described privates pin contacts with flick mechanism, and the other end of privates pin extends to encapsulated layer outside.Flick effect as shown in Figure 4.
Shown in Fig. 5 to be the number of wire pin be two flick effect; One end of first wire pin is connected with the silver electrode layer of chip varistor side; The other end of the first wire pin extends to encapsulated layer outside; Described one end of the second wire pin is connected with the silver electrode layer of chip varistor opposite side, and contacts with flicking structure; The other end of the second wire pin extends to encapsulated layer outside.
Surface structure of the present utility model can be round, square, and encapsulating mode is that powder is coated with, liquid is coated with, embedding; The utility model adopts Modularization assembled structure, the assembling of voltage dependent resistor chip, base, and lead electrode welding assembly, shell fragment are assembled, application is epoxy resin enclosed or embedding operation, greatly improve automatic, large-scale production operation at performance guarantee simultaneously; The utility model can also according to customer demand, and solder joint selects different temperatures alloy scolding tin, coordinates, be widely used in various temperature, overvoltage protection occasion with piezo-resistance.
The just embodiment of the present utility model described in above specification, various illustrating is not construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field after having read specification can to before described embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.
Claims (4)
1. a Thermal protection type piezo-resistance, is characterized in that: comprise base, the chip varistor be arranged on base, parcel base and the encapsulated layer of chip varistor and the wire pin that is connected with external electronic component; Described chip varistor surface-coated has silver electrode layer; One end of described wire is welded with silver electrode layer or is welded with silver electrode layer by fuse, forms solder joint; Described base is also provided with flick mechanism; Described flick mechanism is shell fragment or elater; One end of described flick mechanism contacts with wire pin, after solder joint fusing, make wire pin depart from silver electrode layer.
2. a kind of Thermal protection type piezo-resistance as claimed in claim 1, is characterized in that: the number of described wire pin is two; Be respectively the first wire pin and the second wire pin; Described one end of the first wire pin is connected with the silver electrode layer of chip varistor side; The other end of the first wire pin extends to encapsulated layer outside; Described one end of the second wire pin is connected with the silver electrode layer of chip varistor opposite side, and contacts with flicking structure; The other end of the second wire pin extends to encapsulated layer outside.
3. a kind of Thermal protection type piezo-resistance as claimed in claim 1, is characterized in that: the number of described wire pin is three; Be respectively the first wire pin, the second wire pin and privates pin; The first described wire pin is connected with the silver electrode layer of chip varistor both sides respectively with one end of the second wire pin; The other end of the first wire pin and the second wire pin extends to encapsulated layer outside; One end of described privates pin is connected with the silver electrode layer of chip varistor side; Described privates pin contacts with flick mechanism, and the other end of privates pin extends to encapsulated layer outside.
4. a kind of Thermal protection type piezo-resistance as claimed in claim 1, is characterized in that: described solder joint is alloy solder joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520642637.0U CN204884739U (en) | 2015-08-24 | 2015-08-24 | Hot protection type piezo -resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520642637.0U CN204884739U (en) | 2015-08-24 | 2015-08-24 | Hot protection type piezo -resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884739U true CN204884739U (en) | 2015-12-16 |
Family
ID=54829089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520642637.0U Expired - Fee Related CN204884739U (en) | 2015-08-24 | 2015-08-24 | Hot protection type piezo -resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204884739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185492A (en) * | 2015-08-24 | 2015-12-23 | 兴勤（常州）电子有限公司 | Thermal protection piezoresistor |
-
2015
- 2015-08-24 CN CN201520642637.0U patent/CN204884739U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185492A (en) * | 2015-08-24 | 2015-12-23 | 兴勤（常州）电子有限公司 | Thermal protection piezoresistor |
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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: 20151216 Termination date: 20210824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |