CN2141609Y - Electricity leakage protecting plug - Google Patents
Electricity leakage protecting plug Download PDFInfo
- Publication number
- CN2141609Y CN2141609Y CN 92233700 CN92233700U CN2141609Y CN 2141609 Y CN2141609 Y CN 2141609Y CN 92233700 CN92233700 CN 92233700 CN 92233700 U CN92233700 U CN 92233700U CN 2141609 Y CN2141609 Y CN 2141609Y
- Authority
- CN
- China
- Prior art keywords
- plug
- electricity leakage
- contained
- leakage protecting
- push rod
- 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 discloses an electricity leakage protecting plug, which combines an improved general electricity leakage protecting device with a plug. The electricity leakage protecting plug comprises a plastic outer shell of the plug, a circuit control panel and a tripping mechanism for electricity leakage. The utility model is characterized in that a card is directly driven by an iron axial core to conduct actions of locking and tripping, and each tripping mechanism is arranged at a coil seat; the electricity leakage protecting plug combines the plug and the electricity leakage protecting device into integration. The utility model has the advantages of small size, reliable actions and high sensitivity. Besides, the utility model is fully different from the structure of existing trippers, such as a magnetic yoke, a base frame, an armature iron, etc., and the electricity leakage protecting plug is suitable for the electricity leakage protection of household appliances and particularly for portable electrical appliances.
Description
The utility model relates to plug, more specifically to a kind of new type electric leakageproof plug that has creepage protection function, can effectively prevent to cause because of electrical leakage electric shock and the generation of other accident.
Prior art has various earth leakage protective devices; for example; disclosed family expenses earth leakage circuit-breaker in China's utility application numbers 88219848.3; suchlike earth leakage protective device is complicated because part is many; bring sensitivity; aspect such as reliability and mobility problem; and adopt conventional earth leakage protective device to carry out centralized control; often cause overall situation tripping operation because of the part electric leakage; can not satisfy and be exclusively used in for example electric heater of a certain electrical equipment; the earth leakage protective demand of electric chafing dish etc.; and existing plug does not possess creepage protection function; therefore in today that household electrical appliance are popularized day by day, more and more need a kind of new type electric leakageproof plug that earth leakage protective and plug are combined.
The purpose of this utility model is to provide a kind of plug with creepage protection function.This earth leakage protective plug should be able to possess characteristics such as sensing is sensitive reliably, antijamming capability is strong.
The purpose of this utility model is to realize like this, constructing a leakage protecting plug comprises: plastic shell (I), control circuit (II) and electrical leakage tripping device (III) up and down, and wherein control circuit (II) comprises zero sequence current mutual inductor 12, IC, SCR, piezo-resistance etc.; Electrical leakage tripping device (III) comprises coil holder (1), iron axle core (2), back-moving spring (3), card (4), actuation coil (5), the frame that resets (6), push rod (7), bronze flake (8), copper pin (9), big spring (10) and upper and lower silver contact (11).When electrical equipment leak electricity, when getting an electric shock, zero sequence current mutual inductor 12 detects subsequent signal immediately to the IC processing and amplifying, drive the controllable silicon conducting, with big current excitation actuation coil, adhesive iron axle core (2) overcomes back-moving spring (3) elastic force moves card (4) backward, the frame that resets (6) is separated with push rod (7) and make push rod (7) outwards outstanding, the frame (6) that resets moves downward to make upper and lower silver contact (11) thereby throw off by bronze flake (8) elastic force cuts off the electricity supply, and has stoped the generation of electrical equipment leakage, electric shock.When once more with the plug energized, pressing the elastic force that reset button that outstanding push rod (7) forms overcomes big spring (10) moves downward, card (4) is downward thereupon simultaneously, back-moving spring (3) promotes iron axle core (2) and travels forward, the pinning frame (6) that resets, when hand from push rod (7) when exposed parts unclamps, the elastic force of big spring (10) overcomes the bronze flake resistance moves upward the frame that resets, upper and lower silver contact (11) contacts and makes power connection.The feature of leakage protecting plug of the present utility model is directly to drive card by iron axle core to carry out snap close, thread off and move, and tripping mechanism all is contained on the coil holder except that reset frame and bronze flake, also can thread off flexibly even pin push rod.
Implement leakage protecting plug of the present utility model; have simple in structure, volume is small and exquisite, adjust that link is few, reliability is high and characteristics such as stable performance; with the prior art ratio; owing to there are not parts such as pedestal, yoke, armature, connecting rod; significantly reduce the part number, helped the improvement and the large-scale production of reliable in action.
With reference to the accompanying drawings, in conjunction with the embodiments structure of the present utility model and feature are described further, in the accompanying drawing:
Fig. 1, the 2nd, the profile of the utility model leakage protecting plug embodiment;
Fig. 3 is the stereogram of coil holder, bottom view and an end view in the electrical leakage tripping device in the utility model leakage protecting plug;
Fig. 4 is the stereogram of card in the electrical leakage tripping device in the utility model leakage protecting plug;
Fig. 5 is the top view and the end view of push rod in the utility model leakage protecting plug electrical leakage tripping device;
Fig. 6 is a control circuit schematic diagram among the utility model leakage protecting plug embodiment.
With reference to Fig. 1, the shell of the utility model leakage protecting plug (I) is made by flame retardant plastics, and size and layout that three of stretching out in shell bottom surface are used for the copper pin (9) admitted by electrical socket meet standard GB 1003--80 requirement.Outer casing top surface is provided with test button and snap close push rod button, the former is used to test this leakage protecting plug working condition quality, when it is pressed, produce a simulation leakage current loop, leakage current is 5--10MA, this leakage protecting plug just reacts rapidly in the 30--50 millisecond time, meets the regulation of GB GB 6829--86; The latter is used in use taking place electric leakage and detected action back recovery snap close state.In described enclosure, be provided with the zero sequence current mutual inductor 12 that joins with output line, the control circuit (II) that devices such as IC, SCR, electric capacity are housed, electrical leakage tripping device (III) and the upper and lower silver contact (11) that matches with electrical leakage tripping device.Electrical leakage tripping device (III) comprises: push rod (7), iron axle core (2), frame (6) resets, actuation coil (5), big spring (10), back-moving spring (3), coil holder (1), card (4), bronze flake (8), wherein back-moving spring (3) is contained in the centre bore of actuation coil (5), iron axle core (2) also is contained in the centre bore of this actuation coil (5), wherein an end heads on back-moving spring (3) other end draw-in groove and is loaded in the groove of card (4), (referring to Fig. 1), card (4) is contained in the gathering sill of push rod (7), actuation coil (5), push rod (7) is contained in respectively on the corresponding mounting groove of coil holder (1), the interior other end of the circular hole that one end of big spring (10) places described outer casing underpart to divide then withstands push rod (7), the frame (6) that resets is fixed on the bronze flake (8) with following silver contact, last silver contact is fixed on the copper pin and embeds in the groove of coil holder (1), and coil holder (1), bronze flake (8) is fixed on the printing forme circuit board.
With reference to figure 6, output loop leakage current numerical values recited by zero sequence current mutual inductor 12 induction electrical appliances 13, amplify, compare rear drive SCR conducting or shutoff through the IC computing, when the SRC conducting, there is big electric current to make the electrical leakage tripping device action by actuation coil (5) adhesive iron axle core (2), twitch card (4) makes push rod separate with the frame that resets and projects upwards, the frame that resets moves downward under bronze flake (8) elastic force effect, cuts off the electricity supply.In Fig. 6 circuit, capacitor C
1Be used for filtering, C
2, C
3Be used for anti-tampering, the misoperation when piezo-resistance is used to prevent surge impact.
Claims (1)
1, a kind of leakage protecting plug is characterized in that including,
Involutory up and down plastic shell;
Be contained in the circuit part in the described shell, this circuit comprises zero sequence current mutual inductor, SCR, operational amplifier, rectification circuit, piezo-resistance, capacitor etc.;
Be contained in the electrical leakage tripping device in the described shell, include push rod (7), iron axle core (2), frame (6) resets, actuation coil (5), big spring (10), back-moving spring (3), coil holder (1), card (4), bronze flake (8), wherein back-moving spring (3) is contained in the centre bore of actuation coil (5), iron axle core (2) also is contained in the centre bore of this actuation coil (5), wherein an end heads on back-moving spring (3), other end draw-in groove is loaded in the groove of card (4), card (4) is contained in the gathering sill of push rod (7), actuation coil (5), push rod (7) is contained in respectively on the corresponding mounting groove of coil holder (1), one end of big spring (10) places in the circular hole of described outer casing underpart branch, the other end then withstands push rod (7), the frame (6) that resets is fixed on the bronze flake (8) with following silver contact, and last silver contact is fixed on the copper pin and embeds the interior and coil holder (1) of the groove of coil holder (1), bronze flake (8) is fixed on the printing forme circuit board; Be used to control the upper and lower silver contact of electric loop break-make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92233700 CN2141609Y (en) | 1992-09-15 | 1992-09-15 | Electricity leakage protecting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92233700 CN2141609Y (en) | 1992-09-15 | 1992-09-15 | Electricity leakage protecting plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2141609Y true CN2141609Y (en) | 1993-09-01 |
Family
ID=33775952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92233700 Expired - Fee Related CN2141609Y (en) | 1992-09-15 | 1992-09-15 | Electricity leakage protecting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2141609Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8213139B2 (en) | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN103474298A (en) * | 2013-09-30 | 2013-12-25 | 苏州路美思电气有限公司 | Electric leakage protector |
| CN107394541A (en) * | 2017-07-25 | 2017-11-24 | 合肥科斯维数据科技有限公司 | A kind of electronic apparatus adaptor plug |
-
1992
- 1992-09-15 CN CN 92233700 patent/CN2141609Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8213139B2 (en) | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN103474298A (en) * | 2013-09-30 | 2013-12-25 | 苏州路美思电气有限公司 | Electric leakage protector |
| CN107394541A (en) * | 2017-07-25 | 2017-11-24 | 合肥科斯维数据科技有限公司 | A kind of electronic apparatus adaptor plug |
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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 |