CN2229109Y - Overvoltage protective device for household electric appliances - Google Patents
Overvoltage protective device for household electric appliances Download PDFInfo
- Publication number
- CN2229109Y CN2229109Y CN 95241881 CN95241881U CN2229109Y CN 2229109 Y CN2229109 Y CN 2229109Y CN 95241881 CN95241881 CN 95241881 CN 95241881 U CN95241881 U CN 95241881U CN 2229109 Y CN2229109 Y CN 2229109Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- protective device
- electrical appliance
- household electrical
- 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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- Emergency Protection Circuit Devices (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The utility model discloses an overvoltage protective device for household electric appliances. The support 2 connecting with a housing 1 is provided with a plug 3. The inner part of the housing 1 is provided with a voltage-sensitive resistor 4 whose both ends are connected with the plug 3. The utility model is connected in parallel with household appliances during use, and is capable of avoiding the damages of household appliances owing to overvoltage.
Description
The utility model is relevant with emergency protective device, and is especially relevant with the household electrical appliance safeties.
Household electrical appliance are of a great variety, and along with the raising of people's living standard, the value of household electrical appliance is also more and more higher.When supply line breaks, when short circuit or voltage raise, all may damage household electrical appliance.Existing household electrical appliance safeties all adopt overcurrent protection, in case electric current will auto power off above rated current.But can not deenergization when voltage raises, can't avoid causing burning out of household electrical appliance because of voltage raises.
The purpose of this utility model provides a kind of simple in structure, with low cost, easy to use, safe, and the household electrical appliance safeties of overvoltage protection can be provided.
On of the present utility model and the base 2 that housing 1 is connected electrode plug 3 is arranged.Piezo-resistance 4 is arranged in the housing 1, and the two ends of piezo-resistance 4 are connected with zero line with power firestreak respectively.
Electrode plug 3 of the present utility model is the two poles of the earth, promptly connect power firestreak and zero line, also earth electrode can be arranged.
The utility model is simple in structure, and is easy to manufacture, and cost is low modest, easy to use.The socket that during use the utility model plugged in can play the overvoltage protection effect effectively.Because the resistance of piezo-resistance surpasses setting along with the increase of applied voltage and significantly diminishes rapidly, and voltage is reduced.And make the circuit blowout, play the effect of protection household electrical appliance.
Fig. 1 is an overall construction drawing of the present utility model.
Fig. 2 is the another kind of structure chart of implementing of the present utility model.
Following is embodiment of the present utility model:
Housing 1 of the present utility model and base 2 are made by insulating material, and connecting thread 5 is arranged.Metallic plug 3 is fixed on the base 2, and its terminal that is positioned at housing 1 is connected by piezo-resistance 4.Used piezo-resistance is MYG7-391K.
There are three as plug 3, then a ground connection.
The utility model is in parallel with protected household electrical appliance.And be used with fuse (being connected in series with live wire), when voltage surpasses setting,, line current burns fuse immediately because increasing, and meanwhile, it is stable that the applied voltage of protected household electrical appliance keeps.
Claims (2)
1, overvoltage household electrical appliance safeties have plug (3) on the base (2) that it is characterized in that being connected with housing (1), and piezoresistive element (4) is arranged in the housing (1), and its two ends are connected with plug (3).
2, overvoltage household electrical appliance safeties according to claim 1 is characterized in that plug (3) is two utmost points or three utmost points, and piezoresistive element (4) is MYG7-391K piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241881 CN2229109Y (en) | 1995-07-19 | 1995-07-19 | Overvoltage protective device for household electric appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95241881 CN2229109Y (en) | 1995-07-19 | 1995-07-19 | Overvoltage protective device for household electric appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2229109Y true CN2229109Y (en) | 1996-06-12 |
Family
ID=33882948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95241881 Expired - Fee Related CN2229109Y (en) | 1995-07-19 | 1995-07-19 | Overvoltage protective device for household electric appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2229109Y (en) |
-
1995
- 1995-07-19 CN CN 95241881 patent/CN2229109Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |