CN102231462B - Leakage protection plug - Google Patents
Leakage protection plug Download PDFInfo
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- CN102231462B CN102231462B CN 201110097345 CN201110097345A CN102231462B CN 102231462 B CN102231462 B CN 102231462B CN 201110097345 CN201110097345 CN 201110097345 CN 201110097345 A CN201110097345 A CN 201110097345A CN 102231462 B CN102231462 B CN 102231462B
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- snap close
- grip tab
- locker
- leakage protecting
- ground wire
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Abstract
The invention discloses a leakage protection plug. The leakage protection plug not only can prevent electric shock events caused by failures of electrical appliances or the electric shock events caused by the accidental electrification of ground wires, but also can prevent the occurrence of the electric shock events caused by the tripping incapability of the leakage protection plug when a power supply is abnormal. Therefore, an electromagnetic coil, an armature, a latch piece, a resetting push rod, a latch holder, phase line contacts, null line contacts and ground wire contacts are arranged on an electromagnetic tripping and latching device of the leakage protection plug, wherein one end of the latch piece is fixed on the resetting push rod, and the other end of the latch piece is sleeved on the armature; and in latching, the latch piece and the latch holder are latched, the power input end of a rectifier circuit is connected between a phase line and a null line at the power end of the leakage protection plug, and the electromagnetic coil and a silicon controlled rectifier are connected in parallel between the positive and common terminals of the output end of the rectifier circuit respectively.
Description
Technical field
The present invention relates to Electrical Safety resist technology field, especially relate to a kind of leakage protecting plug.
Background technology
Disclosed leakage protecting plug is traditional can only detect the loaded line phase by utilizing among the Chinese patent literature CN1142618C; have or not residual current between the zero line; and can only be on the basis of the electromagnetic trip of the leakage protecting plug of phase line and the disconnection of zero line contact and locker and circuit structure when needs disconnect; set up a pair of ground wire contact that is subjected to electromagnetic trip and locker control connecting and disconnecting at ground wire again; and also simultaneously added the ground wire electrified detection inductor at ground wire and be responsible for detecting whether unexpected charged and formation of ground wire; therefore; the leakage protecting plug of prior art will realize that a precondition of normal defencive function is exactly that working power must be normal, otherwise can not realize protection.
Therefore; adopt the produced leakage protecting plug of prior art just to have following shortcoming: when the power end abnormal (for example: when the power end phase line or zero line is unexpected disconnects; or power end phase line and ground wire reversal connection); at this moment the solenoid of the electromagnetic trip in the leakage protecting plug of prior art and locker owing to not electric and can not produce electromagnetic force; so leakage protecting plug can not be threaded off; still can keep the phase line contact; zero line contact and ground wire contact are in on-state; in case at this moment ground wire meets accident charged (for example: phase line and ground wire reversal connection) or the phase line electric leakage; leakage protecting plug is owing to can not thread off; can not be the phase line contact; zero line contact and ground wire contact disconnect, so still can cause the generation of electric shock casualty accident.
Summary of the invention
In case the object of the present invention is to provide a kind of must could all connect ground wire contact, phase line contact and zero line contact under the electricity condition or in use the power supply abnormal also can automatically all disconnect ground wire contact, zero line contact, phase line contact and also load mutually, the unexpected leakage protecting plugs that also can all disconnect phase line contact, zero line contact and ground wire contact when charged of the electric leakage of zero line road or ground wire, it makes leakage protecting plug also can guarantee Electrical Safety when abnormal conditions appear in power supply.
The objective of the invention is to realize by following technical solution: a kind of leakage protecting plug, comprise plug body and phase, zero, ground three utmost point latches, phase line, zero line, ground wire, rectification circuit, controllable silicon, instrument transformer, electromagnetic trip and locker, electromagnetic trip and locker comprise solenoid, armature, grip tab, push rod resets, the snap close frame, the phase line contact, the zero line contact, the ground wire contact, one end of the grip tab of described electromagnetic trip and locker (6) is fixed on the push rod that resets (3), the other end of grip tab (6) is enclosed within on the armature (9), during snap close, grip tab (6) pins with snap close frame (5); The power input of described rectification circuit (23) (A, B) is connected between the phase line (15) and zero line (16) of leakage protecting plug power end, and the solenoid of described electromagnetic trip and locker (10) and described controllable silicon (22) are connected in parallel respectively between the positive terminal (+) and common port (com) of rectification circuit (23) output.
The grip tab of described electromagnetic trip and locker (6) is provided with the 1st snap close face (11), snap close frame (5) is provided with the 2nd snap close face (2), during the snap close state, the 1st snap close face (11) of grip tab (6) contacts with the 2nd snap close face (2) of snap close frame (5), during trip status, the 1st snap close face (11) of grip tab (6) separates with the 2nd snap close face (2) of snap close frame (5).The shape of the 1st snap close face (11) of the grip tab of described electromagnetic trip and locker (6) can be inclined-plane or arc surface; The shape of the 2nd snap close face (2) of the snap close frame (5) of described electromagnetic trip and locker also can be inclined-plane or arc surface.The half-wave rectifying circuit that described rectification circuit (23) can be comprised of a diode or all-wave or the bridge rectifier that is formed by several diodes.
Substantive features of the present invention be except the same with the leakage protecting plug of prior art can detect have or not residual current between load phase, the zero line and detect ground wire whether charged, when between phase, the zero line and ground wire break down respectively or simultaneously Shi Douhui move immediately phase, zero, all disconnect; also be when the power supply abnormal; leakage protecting plug of the present invention can move immediately phase line contact, zero line contact, the whole automatic disconnections of ground wire contact, thereby guarantees only could use in the normal situation of whole protection system.Solve leakage protecting plug akinesia when the power supply abnormal of prior art, can not provide protection and the electric shock accidents problem of initiation.Therefore, leakage protecting plug of the present invention also can provide the Electrical Safety guarantee that existing leakage protecting plug does not provide in the abnormity of power supply situation.
Compared with prior art, the present invention has following remarkable result:
1, leakage protecting plug of the present invention needs in the situation that get electric could the connection its phase line contact, zero line contact, ground wire contact; when the power supply abnormal; leakage protecting plug of the present invention can not reset, and can not connect its phase line contact, zero line contact, ground wire contact.The leakage protecting plug that has particularly solved prior art can not be threaded off when the phase line that runs into power end and ground wire reversal connection; still can keep phase line contact, zero line contact and ground wire contact to connect, cause ground wire unexpected with electricity cause the problem of electric shock accidents but leakage protecting plug can not provide protection.Thereby guaranteed that leakage protecting plug of the present invention only could use in the normal situation of whole protection system.
2, leakage protecting plug of the present invention in use, when the power supply abnormal, for example: power supply phase line or zero line are unexpected to be disconnected, and it can implement to thread off immediately, and phase line contact, zero line contact, ground wire contact are all disconnected.Solve existing leakage protecting plug in this case with akinesia, namely can not disconnect phase line, zero line, ground wire, still can cause the problem of electric shock accidents in case generation ground wire accident is charged or phase line is leaked electricity.Therefore, leakage protecting plug of the present invention is to provide the guarantee of a kind of more thoroughly Electrical Safety than existing leakage protecting plug.
Provide protection when 3, leakage protecting plug of the present invention not only can leak electricity for the loaded line fault of its lower end, phase line contact, zero line contact, ground wire contact are all disconnected; Can also provide protection when charged for ground wire is unexpected, phase line contact, zero line contact, ground wire contact are all disconnected.
Leakage protecting plug of the present invention is mainly used on the earth leakage protective of various household electrical appliance.
Description of drawings
Fig. 1 is the front view of a kind of leakage protecting plug of one embodiment of the invention, and its electromagnetic trip and locker are in the snap close state.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is the front view of a kind of leakage protecting plug of one embodiment of the invention, and its electromagnetic trip and locker are in trip status.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the B-B cutaway view of Fig. 5.
Fig. 7 is the electrical principle schematic diagram of a kind of leakage protecting plug of the present invention.
Embodiment
By the following examples the present invention is further elaborated.
Referring to Fig. 1 to shown in Figure 7, a kind of leakage protecting plug mainly by plug body and phase, zero, phase line 15, zero line 16, ground wire 14, rectification circuit 23, controllable silicon 22, instrument transformer, the phase line of load end of three utmost point latches, power end
18, zero line 19, ground wire 17 and electromagnetic trip and locker form.Described electromagnetic trip and locker comprise solenoid 10, armature 9, grip tab 6, the push rod 3 that resets, snap close frame 5, spring 4, phase line contact 1-1 and 8-1, zero line contact 1-2 and 8-2, ground wire contact 12 and 13.Described grip tab 6 one ends are fixed on the push rod 3 that resets, and the other end of grip tab 6 is enclosed within on the armature 9, and grip tab 6 is provided with the 1st snap close face 11, and snap close frame 5 is provided with the 2nd snap close face 2.During snap close, described the 1st snap close face 11 contacts and pins with the 2nd snap close face 2; During dropout, described the 1st snap close face 11 separates with the 2nd snap close face 2.Power input A, the B of described rectification circuit 23 is connected between phase line 15 and the zero line 16, described solenoid 10 and controllable silicon 22 be connected in parallel respectively the positive terminal of rectification circuit 23 outputs+and common port com between.Rectification circuit 23 can be selected halfwave rectifier or full-wave rectification or bridge rectifier.1st, 2 snap close faces 11,2 shape can be inclined-plane or arc surface.
Such as Fig. 4; 5; 6; shown in 7; when leakage protecting plug when initially not having electricity; leakage protecting plug power end phase line 15; zero line 16 does not have electricity; be connected to power end phase line 15; solenoid 10 between the zero line 16 does not have electricity can not produce electromagnetic force; 10 pairs of armature 9 of solenoid do not have electromagnetic attraction; armature 9 can not drive grip tab 6 toward solenoid 10 these side oscillations; grip tab 6 and snap close frame 5 can not snap closes; push rod 3 is pressed also and can automatically be upspring under the effect of spring 4 even reset; 5 on snap close frame has born from phase line reed 7-1; the elastic force that zero line reed 7-2 is downward; make phase line contact 1-1 and 8-1; zero line contact 1-2 and 8-2 automatic disconnection; reset push rod 3 simultaneously under the effect of spring 4 and drive the ground wire contact 12 be assemblied on the push rod 3 that resets and move upward; ground wire contact 12 and 13 is disconnected, and leakage protecting plug can't reset.
Such as Fig. 1,2,3, shown in 7, when leakage protecting plug being applied the normal operation power supply, leakage protecting plug power end phase line 15, zero line 16 gets electric, load end phase line 18, do not have unexpected charged without leak current fault and load end ground wire 17 between the zero line 19, controllable silicon 22 is in cut-off state, solenoid 10 gets electric to electromagnetic attraction of armature 9 generations, make vertically this lateral movement of past solenoid 10 of armature 9, grip tab 6 is subjected to the pulling force effect of armature 9 and snap close frame 5 is produced a clamping force, thereby energising is ready in order to reset, then, press the push rod 3 that resets with hand, the push rod 3 that resets drives grip tab 6 and moves downward, when the 1st snap close face 11 of grip tab 6 moves downward the 2nd snap close face 2 position of snap close frame 5, the 1st snap close face (inclined-plane or the arc surface) 11 of grip tab 6 swings in rapidly the 2nd snap close face (inclined-plane or arc surface) 2 of snap close frame 5 under the effect of the clamping force that the electromagnetic attraction of solenoid 10 and armature 9 produces, the 1st snap close face 11 is contacted with the 2nd snap close face 2, and grip tab 6 and snap close frame 5 be snap close immediately; Behind the snap close, hand unclamps the push rod 3 that resets, thereby all closed phase line contact 1-1 and 8-1, zero line contact 1-2 and 8-2 and ground wire contact 12 and 13 under the effect of spring 4, power end phase line 15 and load end phase line 18, power end zero line 16 are connected with load end ground wire 17 with load end zero line 19, power end ground wire 14, thereby provided working power for the consuming device of lower end.
Such as Fig. 1; 2; 3; 4; 5; 6; shown in 7; when in use; in case power supply abnormal; the for example phase line on the power supply lines 15 or zero line 16 unexpected disconnections; at this moment the wire 20 of working power is provided for the rectification circuit 23 of leakage protecting plug; 21 do not have operating current; solenoid 10 dead electricity and lose electromagnetic attraction; can not hold again armature 9; cause between the 2nd snap close face (inclined-plane or arc surface) 2 of the 1st snap close face (inclined-plane or the arc surface) 11 of grip tab 6 and snap close frame 5 without clamping force; the 1st snap close face (inclined-plane or arc surface) 11 of grip tab 6 can be threaded off immediately with the 2nd snap close face (inclined-plane or arc surface) 2 of snap close frame 5 under the effect of spring 4; the 1st snap close face 11 separates with the 2nd snap close face 2; phase line contact 1-1 and 8-1 and zero line contact 1-2 and 8-2 are in phase; zero line reed 7-1; all disconnect immediately under the effect of 7-2; the push rod 3 that resets after the dropout also pops up under the effect of spring 4 simultaneously; and drive ground wire contact 12 and 13 also disconnects; be that the leakage protecting plug tripping operation disconnects, prevent from when abnormity of power supply, continuing to use.
Shown in Fig. 1,2,3,7; in use; if leak current fault occurs in load phase 18, zero line 19 or ground wire 17 is unexpected charged; earth leakage protective device detects residual current signal or the load end ground wire 17 unexpected charged signals between load end phase line 18, the zero line 19, and when it reaches predefined a certain numerical value, for example: 30mA; controllable silicon 22 conducting that will be triggered; immediately the solenoid 10 in parallel with controllable silicon 22 bypassed, make solenoid 10 dead electricity, electricity
Lose electromagnetic attraction between magnetic coil 10 and the armature 9; the 1st snap close face 11 of grip tab 6 is threaded off with the 2nd snap close face 2 of snap close frame 5 under the effect of spring 4; push rod 3 actions that reset are upspring; thereby phase line contact 1-1 and 8-1, zero line contact 1-2 and 8-2, ground wire contact 12 and 13 are all disconnected; the leakage protecting plug instant cut-off is for the user provides the Electrical Safety guarantee.
Because the detection of electrical leakage between phase, the zero line, triggering controllable silicon and ground wire electrified detection, triggering silicon controlled principle and technology have been known, therefore no longer do concrete giving unnecessary details at this.
Claims (4)
1. leakage protecting plug, comprise plug body and phase, zero, ground three utmost point latches, phase line, zero line, ground wire, rectification circuit, controllable silicon, instrument transformer, electromagnetic trip and locker, electromagnetic trip and locker comprise solenoid, armature, grip tab, push rod resets, the snap close frame, the phase line contact, the zero line contact, the ground wire contact, it is characterized in that: an end of the grip tab of described electromagnetic trip and locker (6) is fixed on the push rod that resets (3), the other end of grip tab (6) is enclosed within on the armature (9), during snap close, grip tab (6) pins with snap close frame (5); The power input of described rectification circuit (23) (A, B) is connected between the phase line (15) and zero line (16) of leakage protecting plug power end, and the solenoid of described electromagnetic trip and locker (10) and described controllable silicon (22) are connected in parallel respectively between the positive terminal (+) and common port (com) of rectification circuit (23) output.
2. a kind of leakage protecting plug according to claim 1; it is characterized in that: the grip tab of described electromagnetic trip and locker (6) is provided with the 1st snap close face (11); snap close frame (5) is provided with the 2nd snap close face (2); during the snap close state; the 1st snap close face (11) of grip tab (6) contacts with the 2nd snap close face (2) of snap close frame (5); during trip status, the 1st snap close face (11) of grip tab (6) separates with the 2nd snap close face (2) of snap close frame (5).
3. a kind of leakage protecting plug according to claim 2, it is characterized in that: the shape of the 1st snap close face (11) of the grip tab of described electromagnetic trip and locker (6) can be inclined-plane or arc surface; The shape of the 2nd snap close face (2) of the snap close frame (5) of described electromagnetic trip and locker also can be inclined-plane or arc surface.
4. a kind of leakage protecting plug according to claim 1 is characterized in that: the half-wave rectifying circuit that described rectification circuit (23) can be comprised of a diode or all-wave or the bridge rectifier that is comprised of several diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097345 CN102231462B (en) | 2011-04-19 | 2011-04-19 | Leakage protection plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097345 CN102231462B (en) | 2011-04-19 | 2011-04-19 | Leakage protection plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102231462A CN102231462A (en) | 2011-11-02 |
| CN102231462B true CN102231462B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110097345 Active CN102231462B (en) | 2011-04-19 | 2011-04-19 | Leakage protection plug |
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| CN (1) | CN102231462B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006709A (en) * | 2015-07-28 | 2015-10-28 | 深圳市良辉科技有限公司 | Ground-wire-protection-mode-convertible electric leakage protection plug |
| CN105006707A (en) * | 2015-07-28 | 2015-10-28 | 深圳市良辉科技有限公司 | Protection-mode-convertible electric leakage protection plug |
| CN106229942A (en) * | 2016-09-30 | 2016-12-14 | 中山市拓昊电器有限公司 | A control circuit of a leakage protection device |
| CN108517521B (en) * | 2018-04-04 | 2020-04-10 | 深圳市华星光电技术有限公司 | Etching equipment and etching method for automatically controlling etching end point |
| CN109462094B (en) * | 2018-10-30 | 2020-07-24 | 嘉兴市中法天线实业有限公司 | Anti-creeping plug for television |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684689A (en) * | 1996-06-19 | 1997-11-04 | Advanced Mobile Solutions, Inc. | Interchangeable plug power supply with automatically adjusting input voltage receiving mechanism |
| CN1142618C (en) * | 2001-11-01 | 2004-03-17 | 刘锦泰 | Leakage protection plug |
| US20080094765A1 (en) * | 2005-03-01 | 2008-04-24 | Huadao Huang | Circuit interrupting device with automatic end of life test |
| CN201282245Y (en) * | 2008-08-13 | 2009-07-29 | 浙江正泰建筑电器有限公司 | Fire-proof anticreepage protective plug |
| CN201266741Y (en) * | 2008-10-08 | 2009-07-01 | 章祖德 | Oscillating arm type tripolar switching apparatus for leakage protecting plug |
| CN201490684U (en) * | 2009-03-13 | 2010-05-26 | 黄华道 | Leakage detection protective circuit |
| CN201402963Y (en) * | 2009-03-25 | 2010-02-10 | 黄华道 | Half-wave rectification leakage detection and protection circuit |
| CN201601098U (en) * | 2010-01-15 | 2010-10-06 | 梁西敏 | Electric leakage socket tripping device |
| CN201966456U (en) * | 2011-04-19 | 2011-09-07 | 刘睿刚 | Electric leakage protection plug |
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2011
- 2011-04-19 CN CN 201110097345 patent/CN102231462B/en active Active
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| CN102231462A (en) | 2011-11-02 |
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