CN201117608Y - Ultramicro built-in overcurrent & overheat protector - Google Patents
Ultramicro built-in overcurrent & overheat protector Download PDFInfo
- Publication number
- CN201117608Y CN201117608Y CNU200720075632XU CN200720075632U CN201117608Y CN 201117608 Y CN201117608 Y CN 201117608Y CN U200720075632X U CNU200720075632X U CN U200720075632XU CN 200720075632 U CN200720075632 U CN 200720075632U CN 201117608 Y CN201117608 Y CN 201117608Y
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- CN
- China
- Prior art keywords
- overcurrent
- double metal
- metal plate
- plate
- load
- 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 - Fee Related
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Abstract
The utility model relates to an electric safety protection device, in particular to an ultramicro built-in overcurrent and overheat protector which can automatically cut off the circuit when the overload, overcurrent and short circuit of the load occur. The utility model is characterized in that one end of a double metal plate is provided with an active contact; one end of a conductive plate is provided with a static contact; the double metal plate close to the active contact is provided with a bump; the other ends of the double metal plate and the conductive plate are respectively connected with a wire; an electrode isolated plate is arranged between the double metal plate and the conductive plate; the double metal plate is provided with a press plate; the conductive plate and the press plate are covered with a bracket. Due to the technological proposal, once the load works abnormally, that is, the overload, overcurrent and short circuit of the load occur, the double metal plate will be expanded and reversely deflected, thus cutting off the circuit and preventing the load from being damaged. When the load fault is settled, the double metal plate automatically resets and closes and the power supply is recovered without manual operation. The electric safety protection device can be widely applied to the circuit safety protection of household appliances and industrial equipment.
Description
Technical field:
The utility model relates to a kind of Electrical Safety protective device, especially relates to a kind of when load is transshipped, can automatic shutdown circuit when overcurrent, short circuit ultramicro built-in overcurrent and overheating protection device.
Background technology:
At present, the Electrical Safety protective device all is the thermostat product.This series products is too high by the electric apparatus temperature rise under the non-normal working situations such as overload short circuit of load, open dynamic and static contact by temperature-sensitive element expansion antiarch actuating spring again by air transmitted heat to temperature-sensitive element, cut off the electricity supply, because the air conductive coefficient is little, the temperature that overflows in addition also will be passed through ground floor insulating coating, second layer metal shell, the 3rd layer of spring leaf could conduct to overtemperature (heat) temperature-sensitive element and produce the effect of expansion antiarch, so sensitivity is low, poor reliability and influenced by the ambient temperature payment extremely unstable.
Summary of the invention:
Technical problem to be solved in the utility model provides a kind ofly makes simple, with low cost, easy to use and has the ultramicro built-in overcurrent and overheating protection device of overheated overcurrent protection function.The technical scheme that its technical problem that solves the utility model adopts is: ultramicro built-in overcurrent and overheating protection device; one end of bimetal leaf has moving contact; one end of conducting strip has fixed contact; there is a projection at the nearly moving contact of bimetal leaf place; the other end of bimetal leaf, conducting strip connects lead respectively; accompany the pole piece division board between bimetal leaf, the conducting strip, be equipped with pressing plate on the bimetal leaf, be with support on conducting strip, the pressing plate.Technical problem of the present utility model also can further be realized by following technical solution: projection is triangle, circular arc; Be with shell on conducting strip, the pressing plate; One end of shell is a circular arc.Pole piece division board, pressing plate, protective cover all adopt insulating material to make.Conducting strip, bimetal leaf adopt the sheet metal with certain coefficient of elasticity to make.The utility model in case generation is unusual, i.e. can rapidly make bimetal leaf expansion antiarch when load generation overload flow and even short circuit when load, and then cut off circuit owing to adopt technique scheme, thereby reaches the purpose that the protection load is without prejudice.After fault is eliminated in load, the bimetal leaf closure that automatically resets, need not manual operation can restore electricity.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is front view of the present utility model (structural representation).
Fig. 2 is the A-A cutaway view of Fig. 1.
With reference to Fig. 2.One end of the utility model bimetal leaf 1 has moving contact 2, one end of conducting strip 3 has fixed contact 4, there is a projection 5 at bimetal leaf 1 nearly moving contact 2 places, the other end of bimetal leaf 1, conducting strip 3 connects lead 6 respectively, accompany pole piece division board 7 between bimetal leaf 1, the conducting strip 3, be equipped with pressing plate 8 on the bimetal leaf 1, be with support 9 on conducting strip 3, the pressing plate 8, be with shell 10 on conducting strip 3, the pressing plate 8, an end of shell 10 is a circular arc 11.
Embodiment:
Embodiment 1: with reference to Fig. 1, Fig. 2.Two leads that the utility model is connected on bimetal leaf, the conducting strip are serially connected in the circuit of load, when load takes place when unusual, the electric current on the bimetal leaf of flowing through increases, and causes bimetal leaf heating expansion antiarch, thereby cause bimetal leaf to separate, finally cut off circuit with conducting strip.The bimetal leaf cooling restores to the original state after eliminating fault, and bimetal leaf and conducting strip are closed voluntarily, and circuit recloses and restores electricity.
Embodiment 2: with reference to Fig. 1, Fig. 2.For increasing fail safe of the present utility model, be with the shell that an end is a circular arc on the utility model.The implementation step effect is with embodiment 1.
The utility model can extensively be suitable for the circuit safety protection to household electrical appliance, industrial equipment.
Claims (4)
1. ultramicro built-in overcurrent and overheating protection device; it is characterized in that: an end of bimetal leaf has moving contact; one end of conducting strip has fixed contact; there is a projection at the nearly moving contact of bimetal leaf place; the other end of bimetal leaf, conducting strip connects lead respectively; accompany the pole piece division board between bimetal leaf, the conducting strip, be equipped with pressing plate on the bimetal leaf, be with support on conducting strip, the pressing plate.
2. ultramicro built-in overcurrent and overheating protection device according to claim 1 is characterized in that: projection is triangle, circular arc.
3. ultramicro built-in overcurrent and overheating protection device according to claim 1 and 2 is characterized in that: be with shell on conducting strip, the pressing plate.
4. ultramicro built-in overcurrent and overheating protection device according to claim 3 is characterized in that: an end of shell is a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720075632XU CN201117608Y (en) | 2007-10-22 | 2007-10-22 | Ultramicro built-in overcurrent & overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720075632XU CN201117608Y (en) | 2007-10-22 | 2007-10-22 | Ultramicro built-in overcurrent & overheat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117608Y true CN201117608Y (en) | 2008-09-17 |
Family
ID=39992189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720075632XU Expired - Fee Related CN201117608Y (en) | 2007-10-22 | 2007-10-22 | Ultramicro built-in overcurrent & overheat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201117608Y (en) |
-
2007
- 2007-10-22 CN CNU200720075632XU patent/CN201117608Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20101022 |