CN104934268A - Leakage protection apparatus capable of forced trip-out - Google Patents
Leakage protection apparatus capable of forced trip-out Download PDFInfo
- Publication number
- CN104934268A CN104934268A CN201510278933.1A CN201510278933A CN104934268A CN 104934268 A CN104934268 A CN 104934268A CN 201510278933 A CN201510278933 A CN 201510278933A CN 104934268 A CN104934268 A CN 104934268A
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- CN
- China
- Prior art keywords
- pressure plate
- push rod
- rotary pressure
- wiring board
- grip tab
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
Abstract
Provided is a leakage protection apparatus capable of forced trip-out. The leakage protection apparatus is formed by a shell, a circuit board, a control circuit, a zero sequence current transformer, an electromagnetic tripping and buckling device, and a forced trip-out device, the forced trip-out device is provided with a second forced trip-out push rod and a rotation pressure plate, the rear part of the rotation pressure plate is provided with rotating shafts, the front end of the rotation pressure plate is provided with a hook portion, the hook portion at the front end is arranged between a jump buckling piece and a pressure rod, the rotating shafts at the rear part are movably supported on a coil fixing seat, the lower end part of the second forced trip-out push rod penetrates through the circuit board and is connected with the upper surface of the front part of the rotation pressure plate in a contacted manner, the rear end part of the jump buckling piece is arranged at the front end part of an armature, the front end part of the jump buckling piece is horizontally inserted into the pressure rod and connected with a first reset push rod in a contacted manner, and the hook portion at the front end of the rotation pressure plate is connected with the rear end part of the jump buckling piece in a contacted manner. According to the leakage protection apparatus, when electronic parts in the apparatus has accidental failures or power supply faults, forced trip-out can be realized, the connection with a phase line and a zero line of the power supply is cut off, and the electricity safety is guaranteed.
Description
Technical field
The present invention relates to Electrical Safety resist technology field, especially relate to a kind of earth leakage protective device forcing tripping operation.
Background technology
Earth leakage protective device is also called residual current operated protective device; this series products is structurally all provided with electromagnetic trip and locker, experimental rig, electronic circuit board; main application is for cutting off the electricity supply immediately when the supply line of its rear end or electrical equipment break down, and prevents the safety of life and property because of harm people when the supply line of its rear end or apparatus failure produce electric leakage.In use, if want to make earth leakage protective device disconnect the connection with power supply, then just can be realized by the test switch pressed in experimental rig under normal circumstances.But; when the inside of this kind of earth leakage protective device occur chance failure (such as: electronic component be short-circuited inefficacy, solenoid broken string open circuit) maybe when provide for earth leakage protective device the mains-supplied circuit of working power break down (such as: zero line surprisingly disconnects) time this kind of earth leakage protective device just can not to thread off disconnection and being connected to of power supply; even if the test switch pressing experimental rig also cannot be cut off the electricity supply; now just can not eliminate the unexpected electric short circuit of appearance or the fault of electric leakage in time; so still there is very large potential safety hazard to people's electricity consumption in it.
In order to solve the problem, the applicant once have submitted a kind of patent application document with the earth leakage protective device forcing the earth leakage protective device of tripping function and a kind of energy pressure to be threaded off on April 17th, 2015 to State Intellectual Property Office, forcible tripping device is equipped with in this two series products, forcible tripping device is equipped with and forces dropout push rod, 3rd spring, rotary pressure plate, 4th spring, pressure dropout push rod with the 3rd spring is contained between shell and wiring board, rotary pressure plate is arranged between wiring board and coil holder, 4th spring is housed between rotary pressure plate rearward end and wiring board, also reference column is respectively equipped with in rotary pressure plate rearward end both sides, coil holder is also provided with detent corresponding with it, effect by the 4th spring impels rotary pressure plate rearward end descending, when the reference column of rotary pressure plate rearward end both sides comes downwards to bottom the detent of coil holder, rotary pressure plate resets and is located.The pressure dropout push rod that 3rd spring is used to make movement travel larger resets, in order to avoid hinder the leading section of rotary pressure plate to rotate up reset, 4th spring is used to make the leading section of rotary pressure plate to rotate up reset, being impelled by the reset response of the 3rd spring and the 4th spring like this forces dropout push rod and rotary pressure plate leading section to rotate up, thus avoid rotary pressure plate interfere jump grip tab, armature, depression bar motion cause electromagnetism snap close and trip gear cannot the problem of snap close or dropout.But, due to the 4th spring be contained between rotary pressure plate rearward end and wiring board do not have positioner to cause in the circuit board to produce when rotary pressure plate compresses to offset, distortion and affect life of product.The assembly technology of this forcible tripping device production is simultaneously more complicated, be not easy to produce in enormous quantities, in high volume production process toward contact there are some uncertain factors and cause electromagnetism snap close and tripping mechanism stuck and can not thread off and trip or cause electromagnetism snap close and tripping mechanism can not carry out snap close, cannot switch on power, thus have a strong impact on the q&r of product.
Summary of the invention
The object of the present invention is to provide a kind of earth leakage protective device forcing tripping operation; this earth leakage protective device still can be forced when not only electronic component therein surprisingly lost efficacy or occurred power failure to trip and disconnect the connection with power supply phase line, zero line; thus guarantee that people's electricity consumption is safer, this apparatus structure is simple, be convenient to produce in enormous quantities, cost is low, better reliability.
Technical solution proposed by the invention is such:
A kind of earth leakage protective device forcing tripping operation, include shell, wiring board, drive the control circuit of solenoid, zero sequence current mutual inductor, electromagnetic trip and locker, this electromagnetic trip and locker include driving solenoid, coil rack, 1st spring, armature, jump grip tab, depression bar, 1st reset push rod, 2nd spring, phase line contact, zero line contact, coil holder and experimental rig, be provided with by driving solenoid in coil holder, the electromagnet of armature and the 1st spring composition, coil holder upper end is embedded with wiring board, the 1st reset push rod is provided with between wiring board and shell, also be provided with pressure tripgear, described pressure tripgear is provided with the 2nd and forces tripping operation push rod and rotary pressure plate, between wiring board and shell, be provided with the 2nd force tripping operation push rod, rotary pressure plate is provided with between wiring board and driving solenoid, both sides, described rotary pressure plate rear portion are provided with rotating shaft, rotary pressure plate front end is provided with hook part, hook part, rotary pressure plate front end is contained in jumps between grip tab and depression bar, rotary pressure plate rear portion both sides rotating shaft expansion bearing is on coil holder, rotary pressure plate freely up and down swings around this rotating shaft, 2nd forces tripping operation push rod bottom to contact with rotary pressure plate front upper surface through wiring board connects, jumping grip tab rearward end is contained on the leading section of armature, jump grip tab leading section level to insert in depression bar and contact with the 1st reset push rod and connect, this depression bar is enclosed within the 1st reset push rod middle and lower part and is slidably connected with the 1st reset push rod, hook part, rotary pressure plate front end contacts with jumping grip tab rearward end and connects.
Compared with prior art, the present invention has following remarkable result:
(1) earth leakage protective device of the present invention is because being provided with pressure tripgear; can not to thread off time (such as: electronic component puncture short, solenoid broken string open circuit) thus the electronic component overcome when its inside surprisingly lost efficacy the problem of cutting off the electricity supply and connecting, so the present invention provides a kind of safer Electrical Safety guarantee than existing earth leakage protective device.
(2) earth leakage protective device of the present invention forces tripgear to also overcome the problem can not threaded off when mains supply meets accident fault and to cut off the electricity supply and connect, so the present invention provides a kind of safer Electrical Safety guarantee than existing earth leakage protective device because being provided with.
(3) earth leakage protective device of the present invention just can realize forcing trip avoidance function with ingenious cooperation the between the 1st spring, armature, jumping grip tab, depression bar by forcing tripping operation push rod, rotary pressure plate; rotary pressure plate and pressure tripping operation are above all without the need to increasing back-moving spring; it has simple structure, produces easy, the lower-cost feature of assembling; and eliminate the uncertain factor affecting product quality that the production technology because of complexity brings and eliminate the spring biases being arranged on rotary pressure plate rearward end and cause distortion to affect the problem in life-span, thus more safe and reliable.
Earth leakage protective device of the present invention is mainly used in the earth leakage protective of various household electrical appliance, mainly makes the power line of earth leakage protective device or band earth leakage protective device.
Accompanying drawing explanation
Fig. 1 is a kind of schematic appearance forcing the earth leakage protective device of tripping operation of one embodiment of the invention.
Fig. 2 is the internal structure schematic diagram after earth leakage protective device shown in Fig. 1 removes shell.
Fig. 3 is the electromagnetic trip of the inside of earth leakage protective device shown in Fig. 1 and locker and the deployed configuration schematic diagram forcing tripgear.
Fig. 4 when to be that earth leakage protective device shown in Fig. 1 is unexecuted force tripping operation along the cutaway view in A-A direction.
Along the cutaway view in A-A direction when Fig. 5 is the pressure of earth leakage protective device shown in Fig. 1 tripping operation.
Fig. 6 is a kind of electronic schematic diagram forcing the earth leakage protective device of tripping operation of the present invention.
Embodiment
By embodiment below, the present invention is further elaborated.
See shown in Fig. 1 to Fig. 6, a kind of energy is forced the earth leakage protective device of tripping operation by shell 1, wiring board 2, is driven the control circuit 17 of solenoid, zero sequence current mutual inductor 16, electromagnetic trip and locker to form.This electromagnetic trip and locker by driving solenoid 3, coil rack 4, the 1st spring 5, armature 6, jump grip tab 7, depression bar 8, the 1st reset push rod 9, the 2nd spring 10, phase line moving contact 15 with zero line moving contact 15-1, phase line fixed contact 14 with zero line fixed contact 14-1, coil holder 11, force tripgear and experimental rig 18 to form.Be provided with in coil holder 11 by the electromagnet driving solenoid 3, armature 6 and the 1st spring 5 to form, coil holder 11 upper end is embedded with wiring board 2, is provided with the 1st reset push rod 9 between wiring board 2 and shell 1.Also be provided with pressure tripgear, this pressure tripgear is provided with the 2nd and forces tripping operation push rod 12 and rotary pressure plate 13.Between wiring board 2 and shell 1, be provided with the 2nd force the push rod 12 that trips, rotary pressure plate 13 is provided with between wiring board 2 and driving solenoid 3, both sides, rotary pressure plate 13 rear portion are respectively equipped with the 1st rotating shaft 13-1 the 2nd rotating shaft and 13-2 of identical central axis, rotary pressure plate 13 front end is provided with hook part 13-3, rotary pressure plate front end hook part 13-3 is contained in and jumps between grip tab 7 and depression bar 8, rotary pressure plate 13 rear portion the 1st rotating shaft 13-1 and the 2nd rotating shaft 13-2 expansion bearing are on coil holder 11, and rotary pressure plate 13 freely up and down swings around the 1st rotating shaft 13-1 and the 2nd rotating shaft 13-2.2nd forces tripping operation push rod 12 bottom to contact with rotary pressure plate 13 front upper surface through wiring board 2 connects, jumping grip tab 7 rearward end of L shape is contained on the leading section of armature 6, jump grip tab 7 leading section level to insert in depression bar 8 and contact with the 1st reset push rod 9 and connect, this depression bar 8 is enclosed within the 1st reset push rod 9 middle and lower part and is slidably connected with the 1st reset push rod 9, and rotary pressure plate 13 front end hook part 13-3 contacts with jumping grip tab 7 rearward end and connects.When pressing the 2nd and forcing to trip push rod 12,2nd forces tripping operation push rod 12 to contact through wiring board 2 with rotary pressure plate 13 front upper surface and push rotary pressure plate 13 is rotated down in the direction of the clock, make rotary pressure plate 13 push jumping grip tab 7 to move backward, and make jumping grip tab 7 be separated dropout with the groove 9-1 of the 1st reset push rod 9.2nd forces tripping operation push rod 12 to be arranged on shell 1.
The present invention is owing to utilizing the bounce of the 1st spring 5 to armature 6 dexterously, jumping grip tab 7 urged forward rotary pressure plate 13 front end hook part 13-3 and make rotary pressure plate 13 front portion by counterclockwise rotating up, thus drive the 2nd force tripping operation push rod 12 move upward realize the 2nd force tripping operation push rod 12 reset, rotary pressure plate 13 front portion rotates up and locates by wiring board 2 simultaneously, thus without the need to forcing to increase back-moving spring in addition between tripping operation push rod 12 and rotary pressure plate 13 the 2nd, both sides, rotary pressure plate 13 rear portion are also without the need to arranging reference column.
During use, the 1st reset push rod 9 is pressed with hand, 1st reset push rod 9 makes the 2nd spring 10 compress downwards, when the groove 9-1 on the 1st reset push rod 9 down move to corresponding jump the position of grip tab 7 leading section time, jump and groove 9-1 that grip tab 7 is pushed into rapidly by the 1st spring 5, armature 6 on the 1st reset push rod 9 block snap close and makes the 1st reset push rod 9, depression bar 8, jump the entirety that grip tab 7 forms a motion; After unclamping hand, 1st reset push rod 9 moves upward and drives depression bar 8 to press against respectively to be equipped with the phase pole movable contact spring of phase line moving contact 15 and the zero pole movable contact spring that zero line moving contact 15-1 is housed move to the direction of phase line fixed contact 14 with zero line fixed contact 14-1 under the effect of the 2nd spring 10, and finally makes phase line moving contact 15 and phase line fixed contact 14, zero line moving contact 15-1 and zero line fixed contact 14-1 all close phase line and the zero line of connecting city's power supply.
In use, once earth leakage protective device occurs that inner electronic component lost efficacy (such as: the accidental short circuit decrepitates etc. such as piezo-resistance cause burns earth leakage protective device, solenoid 3 unexpected broken string open circuit or burn) mains power fails (such as: zero line surprisingly disconnects) while occur again electric leakage or electrical fire dangerous time, this earth leakage protective device cannot be threaded off automatically, the connection with power supply can not be disconnected, the test switch that also cannot be arranged on by operation in the experimental rig 18 on earth leakage protective device shell 1 makes earth leakage protective device thread off, therefore the connection with power supply can not be disconnected, at this moment then can press the 2nd and force tripping operation push rod 12, 2nd force tripping operation push rod 12 descending and through wiring board 2 push rotary pressure plate 13 front portion be rotated down and promotes jumping grip tab 7 move backward, thus make jumping grip tab 7 leading section be separated dropout from the groove 9-1 the 1st reset push rod 9, now, 1st reset push rod 9 and depression bar 8, jump the entirety that grip tab 7 no longer forms a motion, 1st reset push rod 9 pops up rapidly under the effect of the 2nd spring 10, meanwhile, phase line moving contact 15 and zero line moving contact 15-1 are in phase, be separated with zero line fixed contact 14-1 with phase line fixed contact 14 respectively rapidly under the drive of zero pole movable contact spring, earth leakage protective device is made to disconnect the connection with mains supply, thus ensured the Electrical Safety of people better.
Because the circuit principle structure of earth leakage protective detection and driving solenoid 3 and control circuit 17 thereof has been known technology, do not repeat them here.
Claims (1)
1. the earth leakage protective device forcing to trip, include shell, wiring board, drive the control circuit of solenoid, zero sequence current mutual inductor, electromagnetic trip and locker, this electromagnetic trip and locker include driving solenoid, coil rack, 1st spring, armature, jump grip tab, depression bar, 1st reset push rod, 2nd spring, phase line contact, zero line contact, coil holder and experimental rig, be provided with by driving solenoid in coil holder, the electromagnet of armature and the 1st spring composition, coil holder upper end is embedded with wiring board, the 1st reset push rod is provided with between wiring board and shell, it is characterized in that: be also provided with pressure tripgear, described pressure tripgear is provided with the 2nd and forces tripping operation push rod and rotary pressure plate, between wiring board and shell, be provided with the 2nd force tripping operation push rod, rotary pressure plate is provided with between wiring board and driving solenoid, both sides, described rotary pressure plate rear portion are provided with rotating shaft, rotary pressure plate front end is provided with hook part, hook part, rotary pressure plate front end is contained in jumps between grip tab and depression bar, rotary pressure plate rear portion both sides rotating shaft expansion bearing is on coil holder, rotary pressure plate freely up and down swings around this rotating shaft, 2nd forces tripping operation push rod bottom to contact with rotary pressure plate front upper surface through wiring board connects, jumping grip tab rearward end is contained on the leading section of armature, jump grip tab leading section level to insert in depression bar and contact with the 1st reset push rod and connect, this depression bar is enclosed within the 1st reset push rod middle and lower part and is slidably connected with the 1st reset push rod, hook part, rotary pressure plate front end contacts with jumping grip tab rearward end and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278933.1A CN104934268B (en) | 2015-05-28 | 2015-05-28 | A kind of earth leakage protective device that can force tripping operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278933.1A CN104934268B (en) | 2015-05-28 | 2015-05-28 | A kind of earth leakage protective device that can force tripping operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104934268A true CN104934268A (en) | 2015-09-23 |
| CN104934268B CN104934268B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510278933.1A Active CN104934268B (en) | 2015-05-28 | 2015-05-28 | A kind of earth leakage protective device that can force tripping operation |
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Citations (6)
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| KR20070093498A (en) * | 2006-03-14 | 2007-09-19 | 상도전기통신 주식회사 | Compact leakage breaker having over current and short protection |
| CN201163692Y (en) * | 2008-02-13 | 2008-12-10 | 臧琛瑶 | Creepage protecting socket |
| CN101399418A (en) * | 2007-09-30 | 2009-04-01 | 黄华道 | Novel leakage protection socket |
| CN201425994Y (en) * | 2009-05-27 | 2010-03-17 | 中山市开普电器有限公司 | Power plug with leakage protection function |
| CN102025086A (en) * | 2010-12-05 | 2011-04-20 | 中山市开普电器有限公司 | Power plug with leakage protection function |
| CN204651271U (en) * | 2015-05-28 | 2015-09-16 | 深圳市良辉科技有限公司 | A kind of earth leakage protective device forcing tripping operation |
-
2015
- 2015-05-28 CN CN201510278933.1A patent/CN104934268B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070093498A (en) * | 2006-03-14 | 2007-09-19 | 상도전기통신 주식회사 | Compact leakage breaker having over current and short protection |
| CN101399418A (en) * | 2007-09-30 | 2009-04-01 | 黄华道 | Novel leakage protection socket |
| CN201163692Y (en) * | 2008-02-13 | 2008-12-10 | 臧琛瑶 | Creepage protecting socket |
| CN201425994Y (en) * | 2009-05-27 | 2010-03-17 | 中山市开普电器有限公司 | Power plug with leakage protection function |
| CN102025086A (en) * | 2010-12-05 | 2011-04-20 | 中山市开普电器有限公司 | Power plug with leakage protection function |
| CN204651271U (en) * | 2015-05-28 | 2015-09-16 | 深圳市良辉科技有限公司 | A kind of earth leakage protective device forcing tripping operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104934268B (en) | 2017-03-08 |
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Effective date of registration: 20220617 Address after: 528300 floor 4, No. 9, industrial community, South District, west side of Tianhe North Road, Ronggui South District neighborhood committee, Shunde District, Foshan City, Guangdong Province Patentee after: Foshan Lianghui Electronics Co.,Ltd. Address before: 518126 room 705b, block B, Shenzhen Zhihui innovation center, Taoyuanju, Qianjin Second Road, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee before: SHENZHEN LONGWAY TECHNOLOGY Co.,Ltd. |
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