CN201838413U - Temperature protection type varistor with remote-control interface - Google Patents
Temperature protection type varistor with remote-control interface Download PDFInfo
- Publication number
- CN201838413U CN201838413U CN201020579665XU CN201020579665U CN201838413U CN 201838413 U CN201838413 U CN 201838413U CN 201020579665X U CN201020579665X U CN 201020579665XU CN 201020579665 U CN201020579665 U CN 201020579665U CN 201838413 U CN201838413 U CN 201838413U
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- China
- Prior art keywords
- fuse
- loop fuse
- control interface
- major loop
- protection type
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to a temperature protection type varistor with a remote-control interface, which comprises a housing, wherein a main circuit fuse, a signal monitoring circuit fuse and a varistor which are arranged in the housing; the main circuit fuse and the signal monitoring circuit fuse are simultaneously integrated on the same ceramic chip; and the ceramic chip is connected with the varistor through a metallic conductor. By adopting the temperature protection type varistor with the remote-control interface, the main circuit and the signal monitoring circuit low-temperature alloy fuses can sense the heat of the varistor simultaneously, directly, rapidly and accurately, and the opening time of the two fuses is approximate, so that an error warning signal is relatively accurately sent by a monitoring leg.
Description
Technical field
The utility model relates to a kind of Zinc-oxide piezoresistor, especially a kind of hot protection type piezo-resistance of quick response that has dry contact.
Background technology
In existing technology, patent 200810122687 provides a kind of varistor that has heat protection function, when the high heat of varistor generation, and thermo-fuse fusing, the 3rd leg provides external signal.But have some problems: 1. the monitoring pin is attempted by in the major loop, its use be the high voltage source of major loop, the high-tension electricity of major loop is used in relatively potential safety hazard in the signal circuit.2. hot protection type piezo-resistance is connected across (because there are not voltage difference in zero line and ground wire normal condition) between zero line and the ground wire, just can't make indicator light work.Patent 10044661.5 provides several piezo-resistances that are provided with alloy-type temperature fuse.Wherein there is kind of a structure to be to use two alloy-type temperature fuses, the pin of one of them fuse A is welded on the chip, another one fuse B directly is attached on the chip, fuse A is welded on the heat that pin on the chip and shell accept chip by it and disconnects, and fuse B only experiences the heat of chip by shell, owing to there is not the material of metal or other high heat conduction to connect between Thermal Cutoffs and the chip, only for simply being close together, at two place, slit, filled probably by the epoxy glue that heat conductivility is bad.So the disconnection principle of these two fuses is different, the sensitivity that fuse A will disconnect, the time is shorter than fuse B.Just through regular meeting a problem takes place, after major loop fuse A opens owing to the perception heat is multibreak, chip will can not generate heat again, if this moment, fuse B was disconnected, fuse B may disconnect hardly so, also just can not provide disablement signal.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of quick response, the hot protection type piezo-resistance that action sensitivity height, major loop and monitoring loop almost move simultaneously.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of temperature protection type piezo-resistance with Remote Control Interface; comprise shell and setting voltage dependent resistor chip in the enclosure; also be provided with major loop fuse and minor loop fuse in the described shell; be provided with ceramic base between described major loop fuse and minor loop fuse and the voltage dependent resistor chip; described ceramic base adopts high-temperature metal to be connected with voltage dependent resistor chip by metallic conductor, and described major loop fuse and the coupling of minor loop fuse are arranged on the same one side of voltage dependent resistor chip.
Further specifically, major loop fuse described in the utility model and minor loop fuse encapsulate by fluxing resin, described fluxing resin is fixed in the ceramic enclosure wall of ceramic base, described major loop fuse, minor loop fuse and voltage dependent resistor chip by epoxy encapsulation in shell, described major loop fuse and minor loop fuse are the low-temperature alloy fuse, described major loop fuse and minor loop fuse are close to ceramic base, and major loop fuse and the nearly voltage dependent resistor chip pyrotoxin setting of minor loop fuse.
The beneficial effects of the utility model are; solved the defective that exists in the background technology; described major loop fuse and minor loop fuse are the temperature module; the origin of heat of major loop fuse and the action of minor loop fuse is in the heat that voltage dependent resistor chip produced; adopt high temperature alloy to connect together between the insulating ceramics base of temperature protection device and the voltage dependent resistor chip by metallic conductor; major loop and minor loop fuse lie low; closely contact is in the middle of insulator foot; make that the low-temperature alloy fuse can be direct; rapidly; experience the heat of piezo-resistance accurately; and major loop and minor loop fuse are placed the same one side of voltage dependent resistor chip, make that major loop and minor loop fuse are approaching opening time, and collector area is big; heat efficiency height effectively prevents catching fire behind the heat protection pressure responsive resistor failure.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Fig. 2 be Fig. 1 A-A to sectional view;
Among the figure: 1, shell; 2, ceramic enclosure wall; 3, ceramic base; 4, major loop leading foot; 5, voltage dependent resistor chip; 6, embedding epoxy glue; 7～8, minor loop fuse leading foot; 9, major loop fuse; 10, metallic conductor; 11, fluxing resin; 12, the fixing hole (fixedly minor loop fuse) in the ceramic package; 13, minor loop fuse; 14, voltage dependent resistor chip leading foot.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of temperature protection type piezo-resistance as shown in Figure 1 with Remote Control Interface; comprise the major loop fuse 9 and leading foot 4, minor loop fuse 13 and leading foot 7～8 thereof and the voltage dependent resistor chip 5 that are provided with in shell 1, this shell 1; be provided with ceramic base 3 between described major loop fuse 9, minor loop fuse 13 and the voltage dependent resistor chip 5, this ceramic base 3 adopts high-temperature metal to be connected with voltage dependent resistor chip 5 by metallic conductor electrode slice 10.Electrode slice 10 passes the through hole of ceramic base 3, an end and 9 welding of major loop fuse, and the other end adopts high-temperature metal to be connected with the one side of voltage dependent resistor chip 5.Major loop leading foot 4 and low-temperature alloy welding.One end of the close fuse of minor loop fuse leading foot 7,8 reaches in the ceramic enclosure wall fixing hole 12 in the ceramic enclosure wall 2.Major loop fuse 9 and minor loop fuse 13 coated outside fluxing resins 11.The another side of voltage dependent resistor chip leading foot 14 and voltage dependent resistor chip 5 adopts high-temperature metal to be connected.
When voltage dependent resistor chip 5 causes adstante febre because of various factors, heat can conduct to major loop fuse 9 and the minor loop fuse 13 that is positioned at ceramic base 3 sides by electrode slice 10 rapidly, major loop fuse 9 and minor loop fuse 13 disconnect under the acting in conjunction of heat and fluxing resin 11 and shrinking to two ends, thereby major loop fuse 9 cuts off circuit, the voltage dependent resistor chip 5 that is about to worsen is separated from from circuit, what minor loop fuse 13 connected is indicator light or other monitoring loop, after the minor loop fuse disconnected, the deterioration signal that is about to voltage dependent resistor chip provided.
What describe in the above specification is embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the 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 the essence and the scope of utility model.
Claims (5)
1. temperature protection type piezo-resistance with Remote Control Interface; comprise shell (1) and be arranged on the interior voltage dependent resistor chip (5) of shell (1); it is characterized in that: also be provided with major loop fuse (9) and minor loop fuse (13) in the described shell (1); be provided with ceramic base (3) between described major loop fuse (9) and minor loop fuse (13) and the voltage dependent resistor chip (5); described ceramic base (3) adopts high-temperature metal to be connected with voltage dependent resistor chip (5) by metallic conductor (10), and described major loop fuse (9) is coupled with minor loop fuse (13) and is arranged on the same one side of voltage dependent resistor chip (5).
2. the temperature protection type piezo-resistance of band Remote Control Interface as claimed in claim 1; it is characterized in that: described major loop fuse (9) and minor loop fuse (13) are by fluxing resin (11) encapsulation, and described fluxing resin (11) is fixed in the ceramic enclosure wall (2) of ceramic base (3).
3. the temperature protection type piezo-resistance of band Remote Control Interface as claimed in claim 1 is characterized in that: described major loop fuse (9), minor loop fuse (13) and voltage dependent resistor chip (5) by epoxy encapsulation in shell.
4. the temperature protection type piezo-resistance of band Remote Control Interface as claimed in claim 1 is characterized in that: described major loop fuse (9) is the low-temperature alloy fuse with minor loop fuse (13).
5. the temperature protection type piezo-resistance of band Remote Control Interface as claimed in claim 1; it is characterized in that: described major loop fuse (9) and minor loop fuse (13) are close to ceramic base (3), and major loop fuse (9) and nearly voltage dependent resistor chip (5) the pyrotoxin setting of minor loop fuse (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020579665XU CN201838413U (en) | 2010-10-27 | 2010-10-27 | Temperature protection type varistor with remote-control interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020579665XU CN201838413U (en) | 2010-10-27 | 2010-10-27 | Temperature protection type varistor with remote-control interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201838413U true CN201838413U (en) | 2011-05-18 |
Family
ID=44008516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020579665XU Expired - Lifetime CN201838413U (en) | 2010-10-27 | 2010-10-27 | Temperature protection type varistor with remote-control interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201838413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015188752A1 (en) * | 2014-06-10 | 2015-12-17 | 厦门赛尔特电子有限公司 | Novel thermal-protection metal-oxide varistor and surge protector |
| CN108399991A (en) * | 2018-05-09 | 2018-08-14 | 惠州市三特电器有限公司 | A kind of Thermal protection type varistor |
-
2010
- 2010-10-27 CN CN201020579665XU patent/CN201838413U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015188752A1 (en) * | 2014-06-10 | 2015-12-17 | 厦门赛尔特电子有限公司 | Novel thermal-protection metal-oxide varistor and surge protector |
| CN108399991A (en) * | 2018-05-09 | 2018-08-14 | 惠州市三特电器有限公司 | A kind of Thermal protection type varistor |
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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: 20110518 |