CN2353021Y - Arrester protective device for electric appliance - Google Patents
Arrester protective device for electric appliance Download PDFInfo
- Publication number
- CN2353021Y CN2353021Y CN 98241385 CN98241385U CN2353021Y CN 2353021 Y CN2353021 Y CN 2353021Y CN 98241385 CN98241385 CN 98241385 CN 98241385 U CN98241385 U CN 98241385U CN 2353021 Y CN2353021 Y CN 2353021Y
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- CN
- China
- Prior art keywords
- metal oxide
- metallic laminas
- connects
- oxide varistor
- electrical appliance
- 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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- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an arrester protective device for an electric appliance, comprising a casing, a first and a second two metal conductive sheets which are arranged between the casing and a power socket, an overlay resistor, a luminous diode, and a metal oxide rheostat. Conductive joints at head ends of the first and the second metal conductive sheets can be connected with the power plug of an electric apparatus, and first, second, and third contact points are arranged on the metal oxide rheostat respectively. Tail ends of the first and the second metal conductive sheets are connected with the first and the third contact points of the first and the second metal conductive sheets respectively, the intermediate section of the second metal conductive sheet is connected with the overlay resistor and the luminous diode, and the tail end of the luminous diode is connected with the second contact point of the luminous diode. An instant great current is burdened by the rheostat to protect the electric apparatus.
Description
The utility model relates to a kind of lightning protection device of electrical appliance, particularly a kind of overcurrent of utilizing metal oxide varistor burden transient flow to cross, and can make electrical appliance not be subjected to influence because of the overcurrent that thunderbolt produces.
Science and technology is maked rapid progress, and electronics industry is flourish, and existing electronic product is mostly accurate complicated, and causes damage easily when improper use.And with regard to general household electronic products, its internal circuit plate and other accurate electric elements are a lot of, and almost all use civil power, when thunderbolt takes place when, the overvoltage that is produced conducts on each electrical home appliances along the indoor power supply socket most probably, the overvoltage of moment and overcurrent can cause the damage of electronic component, especially computer, document processor, the contour sophisticated product of sound equipment, and its importance of preserving data is not more allowed this damaged condition is taken place.Though present resist technology has been provided with fuse or fuse on electric equipment products, be not easy to the later stage change, and when high voltage or high electric current transient flow were crossed electrical home appliances, the also danger that causes electric wire to cock off most probably, thereby safety in utilization was not good.
The purpose of this utility model is the lightning protection device of a kind of electrical appliance of design, and electrical appliance is not subjected to because of the overvoltage that produced of thunderbolt and the influence of overcurrent, and protection electrical appliance and prevention electric wire cock off.
The purpose of this utility model is achieved in that the lightning protection device of electrical appliance, include a housing, it is characterized in that: also include first metallic laminas, second metallic laminas, a veneer resistance, a light-emitting diode and the metal oxide varistor that are arranged between housing and supply socket: the head end of described first metallic laminas and second metallic laminas is respectively equipped with and connects head, is respectively equipped with first, second, third contact on the described metal oxide varistor; The tail end of first metallic laminas connects first contact of metal oxide varistor, the tail end of second metallic laminas connects the 3rd contact of metal oxide varistor, the stage casing of second metallic laminas veneer resistance that is connected in parallel, veneer resistance tail end connects light-emitting diode, and the light-emitting diode tail end connects second contact of metal oxide varistor.
Described housing is provided with two jacks corresponding with attaching plug, and the head that connects that connects the head and the second metallic laminas head end of the described first metallic laminas head end is separately positioned in two jacks.
Described housing is provided with lamp hole, and described light-emitting diode is arranged in the lamp hole.
Overvoltage or overcurrent that the utility model utilizes metal oxide varistor to bear to produce because of thunderbolt, when thunderbolt takes place when, overvoltage that is produced or big electric current open circuit because of the load that surpasses light-emitting diode burns light-emitting diode formation, force electric current to flow through metal oxide varistor, and change its resistance value, and keep the normal power supply of electric equipment products.
The utility model lightning protection apparatus features is: (1) this device is arranged between the power-line plug and supply socket of electrical appliance, can bring into play protective effect in advance, with the power line of avoid being struck by lightning caused high voltage or big current direction electrical appliance, prevention is because of the thunderbolt trigger wire incident of cocking off; (2) utilize metal oxide varistor to change resistance value automatically, and can make electrical appliance not be subjected to overvoltage or the influence of electric current greatly that causes because of thunderbolt with the burden overcurrent of moment; (3) when light-emitting diode does not work, expression must be changed, and reminds the user with tangible sign; (4) because device is not arranged on the inside of electrical appliance, thereby it is very convenient to change parts.
Further specify technology of the present utility model below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the three-dimensional decomposition texture schematic diagram of the lightning protection device of electrical appliance
Fig. 2 is the lightning protection device user mode schematic diagram of electrical appliance
Referring to Fig. 1, the lightning protection device of electrical appliance mainly comprises housing 1, first metallic laminas 2, second metallic laminas 3, metal oxide varistor 4, veneer resistance 5 and the light-emitting diode of splitting 6.
Light-emitting diode 6 is positioned at lamp hole 12 belows of housing 1, and 21,31 proper corresponding two jack 11 that are positioned at housing 1 that connect of first metallic laminas 2 and second metallic laminas, 3 head ends.
Referring to Fig. 2; lightning protection device with electrical appliance during use connects between the power line and supply socket of electrical appliance; promptly utilize plug to insert two jacks 11 of housing 1; make plug can be earlier by connecting 21 and 31 conducting first metallic laminas 2 and second metallic laminas 3 respectively; then be plugged on the socket energized more together.
As commercial power supply just often (as 110V), because of the rated voltage of metal oxide varistor 4 for exchanging 125V, on metal oxide varistor 4, produce high impedance relatively, electric current is only towards veneer resistance 5 one side flow, make lumination of light emitting diode, and circular flow is to electrical appliance, and this moment, electrical appliance can keep normal operating condition.
When thunderbolt takes place when, thereby in a single day overvoltage that produces or big electric current promptly can make light-emitting diode burn and form above the light-emitting diodes tube load and open circuit, force the electric current metal oxide varistor 4 of all flowing through, by the resistance value that changes metal oxide varistor the electric current that flows to electrical appliance is remained unchanged, keep the normal power supply of electrical appliance equally.
In sum; overvoltage that device of the present utility model utilizes metal oxide varistor to bear to cause because of thunderbolt or big electric current; and can protect electrical appliance not influenced by thunderbolt: because protective device is to be installed between the power-line plug and supply socket of electrical appliance; avoid being struck by lightning the overvoltage that moment produced or the electric wire of big current direction electrical appliance, the electric wire incident of cocking off when can be pre-anti-lightning strike takes place.
Claims (3)
1. the lightning protection device of an electrical appliance, include a housing, it is characterized in that: also include first metallic laminas, second metallic laminas, a veneer resistance, a light-emitting diode and the metal oxide varistor that are arranged between housing and supply socket; The head end of described first metallic laminas and second metallic laminas is respectively equipped with and connects head, is respectively equipped with first, second, third contact on the described metal oxide varistor; The tail end of first metallic laminas connects first contact of metal oxide varistor, the tail end of second metallic laminas connects the 3rd contact of metal oxide varistor, the stage casing of second metallic laminas veneer resistance that is connected in parallel, veneer resistance tail end connects light-emitting diode, and the light-emitting diode tail end connects second contact of metal oxide varistor.
2. the lightning protection device of electrical appliance according to claim 1; it is characterized in that: described housing is provided with two jacks corresponding with attaching plug, and the head that connects that connects the head and the second metallic laminas head end of the described first metallic laminas head end is separately positioned in two jacks.
3. the lightning protection device of electrical appliance according to claim 1 and 2, it is characterized in that: described housing is provided with lamp hole, and described light-emitting diode is arranged in the lamp hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241385 CN2353021Y (en) | 1998-10-19 | 1998-10-19 | Arrester protective device for electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241385 CN2353021Y (en) | 1998-10-19 | 1998-10-19 | Arrester protective device for electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2353021Y true CN2353021Y (en) | 1999-12-08 |
Family
ID=33988151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241385 Expired - Fee Related CN2353021Y (en) | 1998-10-19 | 1998-10-19 | Arrester protective device for electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2353021Y (en) |
-
1998
- 1998-10-19 CN CN 98241385 patent/CN2353021Y/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 |