CN2055647U - Leakage protective device - Google Patents
Leakage protective device Download PDFInfo
- Publication number
- CN2055647U CN2055647U CN 89212702 CN89212702U CN2055647U CN 2055647 U CN2055647 U CN 2055647U CN 89212702 CN89212702 CN 89212702 CN 89212702 U CN89212702 U CN 89212702U CN 2055647 U CN2055647 U CN 2055647U
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- Prior art keywords
- protective device
- leakage protective
- solenoid
- permanent magnet
- regulation
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Abstract
The utility model relates to a leakage protective device, belonging to an electric device to do the protection action when components in earthy potential generate a dangerous voltage. The utility model can be directly installed in plugs, sockets, converters or electric devices. When the detected components is provided with the dangerous voltage, the leakage protective device automatically cut off the power supply quickly to prevent electric shock accidents from happening, and the device only consumes energy in the action moment. The utility model has the advantages of high reliability, simple structure, low cost and convenient operation and is an ideal protective device for low-voltage electric devices and in particular domestic appliances.
Description
The utility model is normally to be in when producing dangerous voltage on earthy parts a kind of belonging to, and protection action, the electric device of cutting off the electricity supply rapidly automatically.It can directly be adorned and be attached in socket, plug, transducer or the power consumption equipment.The following low voltage electrical equipment metal shell of household electrical appliance such as it mainly is applicable to washing machine, electric fan, electric cooking appliance, refrigerator and 500V etc. is done the charged safeguard protection of accident.
In prior art, to being in earth potential under the normal condition or suspending earthy object (measured body), as metal shell of household electrical appliance etc., in use may be because of the wrong power circuit, product quality is inferior, ageing of insulation, immersion accidents such as " tower shells " makes itself and a certain power line electrical communication, and has the dangerous voltage that jeopardizes user's safety.If metal shell energy reliable ground can prevent that electric shock accidents from taking place.But in many instances, often grounding system can't not realize because of have reliable ground connection main line network or do not have independently at all.Popular current mode electric protective device also only after human body gets shocked, could move, and belongs to a kind of safety guard of passive type.The protective device of some voltage-types (as number of patent application 85 2 00876,86 2 01328 etc.), it must determine that live wire, zero line in the power line install, and adopts machinery to buckle or rely on the suction of electromagnet to make sets of contacts remain on a certain position.In practice, two lines of single phase poaer supply, live wire and zero line are extremely difficult fixing, as changeing with two hole plugs
Connect; last end line change or the like all might make its transposing; bring very big inconvenience to the user; and the reliability of protection is reduced; simultaneously, machinery buckles because mechanical wear is difficult to reliably and with long-term; and adopt the method for electromagnet sticking to consume energy for a long time, all come with some shortcomings.
The utility model is different with above-mentioned prior art, and it adopts the method for magnetoelectricity switch, and need not the live wire to the single phase poaer supply line, and zero line is distinguished, and just cuts off the electricity supply at once as long as dangerous voltage occurs on the measured body.This device except that action moment, consumed power not.It does not have mechanical hanging locking device, and reliable in action is simple in structure, and is easy to use, and cost is very cheap.
Accompanying drawing 1 is a fundamental diagram of the present utility model.
Patch cord terminal group ［ 9 ］ and power supply join, and terminal group ［ 10 ］ and power consumption equipment electric power incoming line join.Terminal ［ 11 ］ and measured body ［ 8 ］ join.The user will operate indicating arm ［ 6 ］ and advance, and make spring ［ 5 ］ that deformation take place, and permanent magnet ［ 3 ］ and iron core ［ 4 ］ be sticking mutually, makes sets of contacts ［ 7 ］ closure, operates indicating arm ［ 6 ］ and draws close cap ［ 12 ］.The electric leakage protective device is in on-state.When power consumption equipment because accident, when making measured body ［ 8 ］ and a certain power line electrical communication, this power line is just through measured body ［ 8 ］, solenoid ［ 2 ］, and device and another power line constitute one by the fixing unilateal conduction loop of solenoid ［ 2 ］ sense of current one of in the rectifier cell ［ 1 ］.Flow through pulse current of fixed-direction all under any circumstance in the solenoid ［ 2 ］, produce one and the opposite magnetic field of permanent magnet ［ 3 ］ magnetic line of force.(on the testee above a certain dangerous voltage time) attempts to overcome the active force of deformation at spring ［ 5 ］ when the electric current that flows through solenoid ［ 2 ］ surpasses certain value, solenoid ［ 2 ］ is arranged under the acting in conjunction of jin power mutually with the magnetic field of permanent magnet ［ 3 ］, sets of contacts ［ 7 ］ contact is separated, solenoid ［ 2 ］ dead electricity, spring ［ 5 ］ recovers reset condition, sets of contacts ［ 7 ］ remains on open position, and the operation indicating arm is stretched shrinking away from theshell lid ［ 12 ］.Earth leakage protective device is in off-state.
Accompanying drawing 2 is example structure figure of the present utility model.
［ 12 ］ at the bottom of cap, ［ 18 ］ shell; ［ 17 ］ upper stop piece; ［ 19 ］ lower stop piece is all insulating material and makes, and is rigidly connected between the operation indicating arm ［ 6 ］ of upper stop piece ［ 17 ］ and same material and the iron core lid ［ 15 ］; rectifier cell ［ 1 ］ and protection tube ［ 20 ］ are contained on the appliance plate ［ 16 ］; ［ 2 ］ solenoid, ［ 4 ］ iron core, ［ 13 ］ permanent-magnet materials body, ［ 15 ］ iron core lid; ［ 14 ］ air-gap, three constitute permanent magnet ［ 3 ］.［ 13 ］ contacting part with ［ 15 ］ is glued.［ 4 ］, ［ 15 ］ are made by the material of soft iron or other same physical.［ 9 ］, ［ 10 ］, ［ 11 ］ patch terminal, ［ 5 ］ stage clip.［ 7 ］ be sets of contacts, make by copper sheet or other material with physical property of the same race.It has certain elasticity, and whole device oneself constitutes an integral body, is loaded on shell ［ 12 ］, in ［ 18 ］ (on), can be used as plug, socket, adaptor or power consumption equipment annex, and be installed on wherein.
Claims (8)
1, a kind of by rectifying device [1], solenoid [2], permanent magnet [3], iron core [4], spring [5], operation indicating arm [6], the electric leakage protective device that sets of contacts [7] etc.s are formed, it is characterized in that having a control power circuit break-make the magnetoelectricity switch and when measured body [8] when accident is charged and constitute pass through the unilateal conduction loop that solenoid [2] sense of current is fixed.
2, the electric leakage protective device of stipulating by claim 1, it is characterized in that mainly by rectifying device ［ 1 ］, solenoid ［ 2 ］ is pressed the circuit that accompanying drawing 1 is formed, it guarantees when measured body ［ 8 ］ and a certain power line electrical communication, through this power line, measured body ［ 8 ］, device and another power line constitute one by the fixing unilateal conduction loop of solenoid ［ 2 ］ sense of current one of in the rectifier cell ［ 1 ］.
3, by the electric leakage protective device of claim 1 regulation, it is characterized in that the magnetoelectricity switch, solenoid ［ 2 ］, iron core ［ 4 ］, spring ［ 5 ］, operation indicating arm ［ 6 ］, and sets of contacts compositions such as ［ 7 ］ by permanent magnet ［ 3 ］.
4, by the magnetoelectricity switch of claim 3 regulation, it is characterized in that permanent magnet ［ 3 ］ after operation indicating arm ［ 6 ］ advances, with iron core ［ 4 ］ sticking mutually, spring ［ 5 ］ is forced to take place deformation makes sets of contacts ［ 7 ］ remain on make position.
5, by the magnetoelectricity switch of claim 3 regulation, when it is characterized in that solenoid ［ 2 ］ energising, generation one and the opposite magnetic field of permanent magnet ［ 3 ］ magnetic line of force direction, with spring ［ 5 ］ acting in conjunction, with permanent magnet ［ 3 ］ pushed home, sets of contacts disconnects.
6, by the electric leakage protective device of claim 1 regulation, it is characterized in that permanent magnet ［ 3 ］ by permanent-magnet materials body ［ 13 ］ and air-gap ［ 14 ］, iron core lid ［ 15 ］ is formed.
7, by the electric leakage protective device of claim 1 regulation, it is characterized in that having an operation indicating arm ［ 6 ］, it draws close cap ［ 12 ］ when this device is connected, and when disconnecting, stretches from ［ 12 ］.
8, by the electric leakage protective device of claim 1 regulation, it is characterized in that this device constitutes an integral body, be loaded on shell ［ 12 ］, in ［ 18 ］, can be used as plug, socket, adapter or power consumption equipment annex, and be installed on wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212702 CN2055647U (en) | 1989-01-16 | 1989-01-16 | Leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89212702 CN2055647U (en) | 1989-01-16 | 1989-01-16 | Leakage protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2055647U true CN2055647U (en) | 1990-04-04 |
Family
ID=4868812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89212702 Withdrawn CN2055647U (en) | 1989-01-16 | 1989-01-16 | Leakage protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2055647U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723225A (en) * | 2012-01-04 | 2012-10-10 | 吴江市东泰电力特种开关有限公司 | Vacuum overload protector |
| CN107807703A (en) * | 2017-12-05 | 2018-03-16 | 国网江西省电力有限公司上饶供电分公司 | A kind of ULTC gear automatic switching control equipment |
| CN111415850A (en) * | 2020-04-01 | 2020-07-14 | 义乌招娣贸易有限公司 | Household appliance on-off device capable of self-power-off in short circuit |
| CN111969533A (en) * | 2020-08-12 | 2020-11-20 | 李名参 | Electric wire mounting rack with warning and reminding functions |
-
1989
- 1989-01-16 CN CN 89212702 patent/CN2055647U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723225A (en) * | 2012-01-04 | 2012-10-10 | 吴江市东泰电力特种开关有限公司 | Vacuum overload protector |
| CN107807703A (en) * | 2017-12-05 | 2018-03-16 | 国网江西省电力有限公司上饶供电分公司 | A kind of ULTC gear automatic switching control equipment |
| CN111415850A (en) * | 2020-04-01 | 2020-07-14 | 义乌招娣贸易有限公司 | Household appliance on-off device capable of self-power-off in short circuit |
| CN111415850B (en) * | 2020-04-01 | 2021-12-28 | 上海南安建筑安装工程有限公司 | Household appliance on-off device capable of self-power-off in short circuit |
| CN111969533A (en) * | 2020-08-12 | 2020-11-20 | 李名参 | Electric wire mounting rack with warning and reminding functions |
| CN111969533B (en) * | 2020-08-12 | 2022-01-11 | 湖北鑫耀德电气有限公司 | Electric wire mounting rack with warning and reminding functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |