CN2476889Y - Earth leakage protection socket - Google Patents
Earth leakage protection socket Download PDFInfo
- Publication number
- CN2476889Y CN2476889Y CN 01226819 CN01226819U CN2476889Y CN 2476889 Y CN2476889 Y CN 2476889Y CN 01226819 CN01226819 CN 01226819 CN 01226819 U CN01226819 U CN 01226819U CN 2476889 Y CN2476889 Y CN 2476889Y
- Authority
- CN
- China
- Prior art keywords
- reset
- middle layer
- earth leakage
- guide assembly
- leakage protective
- 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.)
- Ceased
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Abstract
The utility model discloses an electricity leakage protection socket, which consists of an upper cover, a middle layer frame and a base; the upper cover is provided with a power supply output socket, an electricity leakage button and reposition button; a metal installing board is arranged between the upper cover and the middle layer frame; the circuit board has a differential transformer, a loop with built-in iron core, a resetting guide assembly and an assistant switch. The utility model uses the differential transformer, the resetting guide assembly and the assistant switch to examine leakage currency and examine if the element in the electricity leakage protection socket is damaged, to cut off the electricity connection between the power supply input and the power supply output, and to realize the electricity protection device.
Description
The utility model relates to a kind of socket, refers to especially be the socket of one a kind of socket, earth leakage circuit-breaker and display circuit are held, and this socket is fit to be installed in the common metope delivery casing.
Increasing along with household electrical appliance, for making the electrical equipment operate as normal, sometimes, people have to use supply socket.Make a general survey of the supply socket on the market, mainly contain three types: a kind of is the common socket that only has several three-phases, two-phase socket; A kind of is the socket that has overcurrent protection function; Another kind is the socket that has the operating state display lamp.From the structure and the principle Analysis of these sockets, they all can not be protected the electric leakage of electrical equipment directly and accurately, also do not have the leakage tests function; In addition, these sockets can not reflect the operating state of socket exactly; And easily cause the person to get an electric shock.
In view of the foregoing, the purpose of this utility model provides a kind of earth leakage protective socket, and this socket has functions such as leakage tests, earth leakage protective, double reset and demonstration socket operating state.For achieving the above object, the utility model is taked following design: a kind of earth leakage protective socket is mainly combined by loam cake, middle layer bracket and base; One metal mounting panel is installed between loam cake and middle layer bracket; One circuit board is installed between middle layer bracket and base; Differential differentiating transformer, the coil that is built-in with iron core, reset guide assembly and auxiliary switch are installed on described circuit board; The reset guide assembly is positioned at the below that is installed in the reset button that covers, and its top is provided with a central perforation; In the reset guide component internal, vertically run through central perforation, be provided with a guide finger; The end of guide finger is a cone, near the bottom one lock slots that caves in is arranged, and is provided with a spring between the top reset button of guide finger and the middle layer bracket; Also be provided with a spring between middle layer bracket and reset assembly; Be provided with " L " type lock buckling part of movably being made by metal material in reset guide assembly bottom, the central authorities of lock buckling part are provided with a perforation, and the other end of lock buckling part is provided with a spacer pin; Be provided with a pair of elasticity input sheet metal that passes differentiating transformer and link to each other with power supply input wires screw in the both sides of described reset guide assembly central perforation, elasticity input sheet metal is provided with electrical contact, and the electrical contact on this electrical contact output metallic conductor interior with being located at middle layer bracket is corresponding; Between reset guide assembly and circuit board, be provided with an auxiliary switch, be provided with a spring between described auxiliary switch and the circuit board; Described auxiliary switch and the operation of reset guide component synchronization.At the last indicator light that is provided with power output socket, analogue test button, reset button and display working condition that covers.Grounding contact on the metal mounting panel links to each other with the grounding pin of power output socket by the hole of loam cake.Be placed with two output metallic conductors in the both sides of described middle layer bracket; One end of this output metallic conductor links to each other with power output end respectively, and the other end is respectively equipped with electrical contact.Horizontal between described output metallic conductor and analogue test button have a test film.Described reset guide assembly and the corresponding sidewall of described lock buckling part are provided with a circular recess, are built-in with a spring.Be provided with a test resistance below described analogue test button, an end of resistance links to each other with power supply input zero line.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model front view.
Fig. 2 is the utility model perspective exploded view.
Fig. 3 takes front view behind the loam cake apart for the utility model.
Fig. 4 is the utility model interior circuit board assembly schematic diagram.
When Fig. 5 is the utility model operate as normal, along A-A profile among Fig. 2.
When Fig. 6 is the utility model operate as normal, along C-C profile among Fig. 2.
When Fig. 7 is operated in malfunction for the utility model, along A-A profile among Fig. 2.
When Fig. 8 is operated in malfunction for the utility model, along C-C profile among Fig. 2.
Fig. 9 is the utility model display circuit schematic diagram.
Figure 10 is the another kind of display circuit schematic diagram of the utility model.
As shown in Figure 1 and Figure 2, the utility model earth leakage protective socket is made up of loam cake 2, middle layer bracket 10 and base 11; One metal mounting panel 1 is installed between loam cake 2 and middle layer bracket 10, a circuit board 24 is installed between middle layer bracket 10 and base 11.
As Fig. 2, shown in Figure 3, be provided with pair of metal output conductor 13,14 in the both sides of middle layer bracket 10; Be respectively equipped with a pair of on the conductor 13,14 and the corresponding contact 15,16 of power supply input flexibility sheet metal; In addition, conductor 13,14 also links to each other with the output connection screw 5,6 of earth leakage protective socket respectively; Between bottom of exporting metallic conductor 14 and analogue test button 7, be provided with a horizontal test film 12.
As Fig. 2, shown in Figure 4, base 11 is used to hold middle layer bracket 10, circuit board 24, a pair of power supply input wires screw 4 (HOT), 3 (WHITE) and a pair of power supply output connection screw 6 (HOT), 5 (WHITE).
Again with reference to figure 4-shown in Figure 8, be installed in circuit boards 24 in the base 11 and be provided with coil 18, a reset guide assembly 17 and the auxiliary switch 37,39,40 that differential differentiating transformer 27, a pair of power supply input flexibility sheet metal 20,21, are built-in with iron core 19.
One end of power supply input flexibility sheet metal 20,21 is provided with contact 22,23; The other end passes differential differentiating transformer 27 and links to each other with power supply input wires screw 3,4.Reset guide assembly 17 is below the reset button 8, between the input flexibility sheet metal 20,21.The top of reset guide assembly 17 is provided with a central perforation 29, its underpart is provided with " L " type lock buckling part 28 of movably being made by metal material, the central authorities of lock buckling part 28 are provided with a perforation 41, the other end is provided with a spacer pin 30, between side of reset guide assembly 17 and lock buckling part 28, be provided with a circular recess, a built-in spring 36.Vertically run through central perforation 29 in reset guide assembly 17 inside and be provided with a guide finger 34, the bottom of guide finger 34 is a cone, is provided with a depression lock slots 35 near the bottom, is provided with a spring 32 between the top reset button 8 of guide finger and the middle layer bracket.Between reset guide assembly 17 and middle layer bracket 10, be provided with a spring 33.
As Fig. 6, shown in Figure 8, between reset guide assembly 17 and circuit board 24, also be provided with an auxiliary switch 37.Be provided with a spring 38 between auxiliary switch and circuit board, an end of auxiliary switch 37 links to each other with indicator light, and the other end links to each other with the negative pole of power rectifier circuit in the electric leakage supervisory circuit.Auxiliary switch 37 and reset guide assembly 17, power supply input flexibility sheet metal, the synchronous operation of power supply metal output conductor.When power supply input flexibility sheet metal and power supply metal output conductor closure, auxiliary switch is also closed; Otherwise when power supply input flexibility sheet metal and the disconnection of power supply metal output conductor, auxiliary switch also disconnects.
As shown in Figure 5, during the utility model normally closed, press reset button 8, the guide finger 34 that is attached thereto is moved down.Because the bottom of guide finger 34 is a cone, the central perforation 41 on the lock buckling part 28 slides into rapidly in the lock slots 35 on the guide finger 34; Remove the pressure of reset button 8, spring 32 is released, and reset button 8, guide finger 34, reset guide assembly 17 move up, and spring 33 is compressed; Because input flexibility sheet metal 20,21 is on reset guide assembly 17, along with moving up of reset guide assembly 17, input flexibility sheet metal 20,21 moves up thereupon, up to corresponding output conductor 13,14 on contact 15,16 contact till.The input and output closure of earth leakage protective socket, output screw 5,6 is charged, the earth leakage protective socket operate as normal.
Refer again to Fig. 6, Fig. 9; when earth leakage protective socket output and input are closed; along with reset guide assembly 17 moves up; spring 38 below the auxiliary switch 37 discharges, because the release of spring 38 makes auxiliary switch 37,39,40 closures; LED has electric current to flow through; luminous (green), prompting user earth leakage protective socket operate as normal, its input/output terminal closure.
As shown in Figure 7, when earth leakage protective socket fault or the electrical equipment generation leaky that connected, the utility model utilizes differential differentiating transformer to detect leakage current.As press analogue test button 7; make test film 12 and test resistance 31 conductings; differential differentiating transformer detects leakage current; integrated circuit die I C (LM1851) exports high level; make the controllable silicon SCR conducting; coil 18; produce magnetic field; iron core 19 bump lock buckling parts 28; lock buckling part 28 is moved; lock slots 35 on the guide finger 34 skids off from the central perforation 41 of lock buckling part 28, and reset button 8 is upspring by the release action of spring 32, and reset guide assembly 17 is moved down by the release action of spring 33; input flexibility sheet metal 20; 21 are subjected to self elastic reaction and output conductor 13; contact 15 on 14; 16 separately; so just formed power supply output input electric power and disconnected, earth leakage protective socket does not have electric power output, plays earth leakage protective purpose.
Refer again to Fig. 8, shown in Figure 9, because reset guide assembly 17 is moved down by the release action of spring 33, auxiliary switch 37 moves down thereupon, spring 38 is compressed, the contact 39,40 of auxiliary switch 37 disconnects, and a LED (green) no current flows through, and extinguishes; Another LED (redness) display lamp lights, the electrical equipment generation leaky that prompting user earth leakage protective socket breaks down or connected.
After the utility model used, desire was turn-offed earth leakage protective socket, and the user can artificially make short circuit, electric leakage situation by pushing analogue test button 7, and input flexibility sheet metal and power supply output conductor are disconnected, and socket does not have power supply output.
Figure 10 is the another kind of display circuit circuit theory diagrams of the utility model, and the difference of Figure 10 and display circuit shown in Figure 9 is: the display lamp among Fig. 9 is double-colored display lamp, and Figure 10 is monochromatic display lamp, and its operation principle is identical.In addition, the utility model also can add a sounding component, sounds the prompting user.
Because the utility model adopts above design, utilize differential differentiating transformer to detect whether balance of output current, obtain leakage current.When the output current imbalance, when having leakage current, the utility model makes the contact on the output metallic conductor disconnect with the contact of importing on the sheet metal by the reset guide assembly, and socket does not have electric power output; Simultaneously, the operating state that shows earth leakage protective socket by display circuit.In use protect personal safety more reliably.
The above only is preferred embodiment of the present utility model, and the equivalent transformation of any basic utility model technical scheme all belongs within the utility model protection range.
Claims (7)
1, a kind of earth leakage protective socket is mainly combined by loam cake, middle layer bracket and base; One metal mounting panel is installed between loam cake and middle layer bracket; One circuit board is installed between middle layer bracket and base; It is characterized in that:
Differential differentiating transformer, the coil that is built-in with iron core, reset guide assembly and auxiliary switch are installed on described circuit board;
The reset guide assembly is positioned at the below that is installed in the reset button that covers, and its top is provided with a central perforation; In the reset guide component internal, vertically run through central perforation, be provided with a guide finger; The end of guide finger is a cone, near the bottom one lock slots that caves in is arranged, and is provided with a spring between the top reset button of guide finger and the middle layer bracket; Also be provided with a spring between middle layer bracket and reset assembly;
Be provided with " L " type lock buckling part of movably being made by metal material in reset guide assembly bottom, the central authorities of lock buckling part are provided with a perforation, and the other end of lock buckling part is provided with a spacer pin;
Be provided with a pair of elasticity input sheet metal that passes differentiating transformer and link to each other with power supply input wires screw in the both sides of described reset guide assembly central perforation, elasticity input sheet metal is provided with electrical contact, and the electrical contact on this electrical contact output metallic conductor interior with being located at middle layer bracket is corresponding;
Between reset guide assembly and circuit board, be provided with an auxiliary switch, be provided with a spring between described auxiliary switch and the circuit board; Described auxiliary switch and the operation of reset guide component synchronization.
2: earth leakage protective socket according to claim 1 is characterized in that: at the last indicator light that is provided with power output socket, analogue test button, reset button and display working condition that covers.
3: earth leakage protective socket according to claim 1 is characterized in that: the grounding contact on the metal mounting panel links to each other with the grounding pin of power output socket by the hole of loam cake.
4: earth leakage protective socket according to claim 1 is characterized in that: be placed with two output metallic conductors in the both sides of described middle layer bracket; One end of this output metallic conductor links to each other with power output end respectively, and the other end is respectively equipped with electrical contact.
5: earth leakage protective socket according to claim 1 is characterized in that: horizontal between described output metallic conductor and analogue test button have a test film.
6: earth leakage protective socket according to claim 1 is characterized in that: described reset guide assembly and the corresponding sidewall of described lock buckling part are provided with a circular recess, are built-in with a spring.
7: earth leakage protective socket according to claim 1 is characterized in that: be provided with a test resistance below described analogue test button, an end of resistance links to each other with power supply input zero line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226819 CN2476889Y (en) | 2001-06-07 | 2001-06-07 | Earth leakage protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226819 CN2476889Y (en) | 2001-06-07 | 2001-06-07 | Earth leakage protection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2476889Y true CN2476889Y (en) | 2002-02-13 |
Family
ID=33642394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01226819 Ceased CN2476889Y (en) | 2001-06-07 | 2001-06-07 | Earth leakage protection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2476889Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237614A (en) * | 2010-04-22 | 2011-11-09 | 黄华道 | Electricity leakage protection socket |
| CN101483297B (en) * | 2008-01-11 | 2012-09-19 | 黄华道 | Electric power plug with leakage protection function |
| US8382497B2 (en) | 2010-09-30 | 2013-02-26 | Huadao Huang | Power outlet with shield locking mechanism |
| US8550829B2 (en) | 2010-09-30 | 2013-10-08 | Huadao Huang | Power outlet with jack safety shield device |
| US8858245B2 (en) | 2010-09-30 | 2014-10-14 | Huadao Huang | Leakage protection socket with integrated baffle locking mechanism |
| US9048559B2 (en) | 2011-05-12 | 2015-06-02 | Huadao Huang | Power outlet with jack safety shield device |
-
2001
- 2001-06-07 CN CN 01226819 patent/CN2476889Y/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483297B (en) * | 2008-01-11 | 2012-09-19 | 黄华道 | Electric power plug with leakage protection function |
| CN102237614A (en) * | 2010-04-22 | 2011-11-09 | 黄华道 | Electricity leakage protection socket |
| CN102237614B (en) * | 2010-04-22 | 2013-02-13 | 黄华道 | Electricity leakage protection socket |
| US8382497B2 (en) | 2010-09-30 | 2013-02-26 | Huadao Huang | Power outlet with shield locking mechanism |
| US8550829B2 (en) | 2010-09-30 | 2013-10-08 | Huadao Huang | Power outlet with jack safety shield device |
| US8858245B2 (en) | 2010-09-30 | 2014-10-14 | Huadao Huang | Leakage protection socket with integrated baffle locking mechanism |
| US9048559B2 (en) | 2011-05-12 | 2015-06-02 | Huadao Huang | Power outlet with jack safety shield device |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110607 Granted publication date: 20020213 |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20110506 Decision number of declaring invalidation: 16485 Granted publication date: 20020213 |