CN102882036B - Earth leakage protection socket with functions of sparking prevention and reverse connection protection - Google Patents
Earth leakage protection socket with functions of sparking prevention and reverse connection protection Download PDFInfo
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- CN102882036B CN102882036B CN201210380280.4A CN201210380280A CN102882036B CN 102882036 B CN102882036 B CN 102882036B CN 201210380280 A CN201210380280 A CN 201210380280A CN 102882036 B CN102882036 B CN 102882036B
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- reset button
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Abstract
The invention provides an earth leakage protection socket with functions of sparking prevention and reverse connection protection. The earth leakage protection socket comprises power input ends, power output ends, output conductors, a reset button and a circuit board. At least one pair of metal sheets are led out respectively from the power input ends, the power output ends and the output conductors, when a guide post of the reset button and a latch are fastened and positioned, the power input ends, and the power output ends and the output conductors are in contact conduction through the corresponding metal sheets led out. A combination metal sheet is arranged on the circuit board, and is provided with a connection pin connected with one of the power input ends, and is further provided with a discharging pin in clearance fit with the other power input end. A static contact end further extends from the combination metal sheet, and the static contact end matches with a dynamic metal sheet positioned below the static contact end to form a trip coil path switch. The earth leakage protection socket with functions of sparking prevention and reverse connection protection has the advantages that the combination metal sheet serves as both a discharging piece and a static contact piece of a simulation leakage current generation switch, and thus, die cost is saved and assembly process is simplified.
Description
Technical field
What the present invention relates to is a kind of earth leakage protective socket, specifically refers to a kind of earth leakage protective socket with anti-sparking and reverse-connection protection.
Background technology
Raising along with electrical safety, the power-off of tripping in time when earth leakage protective socket in use occurs leakage current due to it is subject to more and more generally low extensive, if number of patent application is 200820234024.3 disclosed earth leakage protective sockets, comprise housing, a pair of power input, a pair of power output end, a pair of output conductor, reset button and circuit board, in housing, be also provided with the release with reset button interlock, in release, wear the snap close that can locate with reset button lead hook, in housing, be also provided with that when energising produces that field drives one iron core clashes into that snap close makes the reset button lead tripping coil separated with snap close and for responding to the parts such as two induction coils of leakage current, by corresponding circuit structure, realize the functions such as earth leakage protective.Its power input of such earth leakage protective socket, power output end and output conductor are respectively drawn pair of metal sheet; when wherein at least one pair of sheet metal has elasticity and reset button lead and locates with snap close hook, three pairs of sheet metals all contact conducting; when mistake accesses power output end by power supply; because output conductor is failed and the direct conducting of power output end; thereby output conductor is not charged, plays the effect of reverse-connection protection.
Such earth leakage protective socket has following basic function: during (1) reverse wiring, forbid resetting, forbid that the sheet metal that power input is drawn contacts conducting with power output end; (2) after correct wiring, press the sheet metal that reset button can draw power input and contact conducting with power output end, output is charged; (3) while there is leakage current, trip in time, the sheet metal that deenergization input is drawn is electrically connected to power output end; (4) can produce simulation leakage current by testing button, whether mechanism for testing can trip, and then whether the test socket life-span stops; (5), when the life-span has stopped, can disconnect by sheet metal and the power output end of forcing tripping mechanism that power input is drawn.
In addition, earth leakage protective socket also should arrange electric discharge mechanism, the instantaneous pressure producing when running into the situations such as thunderbolt in time discharges, the earth leakage protective socket that for example number of patent application is 201110270837.4, there is following problem in above-mentioned background technology: on (1) circuit board, components and parts are too much overstocked, gap is each other little, as only having in tens thousand of volt discharge processes after tens of time actions, thereby easily occur in electric discharge between electronic devices and components solder joint and without the electric discharge of electric discharge sheet, damage the situation of circuit board; (2) moving plate of the moving plate of the moving plate of electric discharge sheet, simulation leakage current generating switch and still, channel selector and still, Test Switchboard and still etc. all independently arrange, and die cost is high, and assembly technology is more complicated; (3) while force threading off, driven ramp effect to move up and down when snap close moves horizontally, movement locus is long, and the sheet metal that power input is drawn and output need to, through a separated process gradually, easily be struck sparks; (4) each sheet metal volume is little, and heat radiation is slow, temperature rise, and device easily strains.
Summary of the invention
The problems referred to above that exist for prior art, the invention provides a kind of earth leakage protective socket with anti-sparking and backing protection function.
For achieving the above object, the present invention institute is by the following technical solutions:
The earth leakage protective socket with anti-sparking and backing protection function, comprise housing, a pair of power input, a pair of power output end, a pair of output conductor, reset button and circuit board, in housing, be also provided with the release with reset button interlock, in release, wear the snap close that can locate with reset button lead hook, in housing, be also provided with that when energising produces that field drives one iron core clashes into that snap close makes the reset button lead tripping coil separated with snap close and for responding to two induction coils of leakage current, described power input, power output end and output conductor are respectively drawn at least pair of metal sheet, power input when one of them can follow release elevating movement and reset button lead and snap close hook location to sheet metal in the sheet metal that power input and power output end are drawn, power output end contacts conducting with output conductor three by the sheet metal of drawing separately, described circuit board is provided with a combination sheet metal, and combination sheet metal has the be connected leg connected with one of power input, also has the electric discharge leg with another power input matched in clearance, combination sheet metal also extends a quiet contact jaw, and this quiet contact jaw coordinates and forms tripping coil channel selector with the moving sheet metal that is positioned at this quiet contact jaw below.
As preferably, described power input is extended with a pair of sheet metal being connected with circuit board through two induction coils and end, on circuit board, draw the elastic sheet metal of the extended sheet metal conducting of a pair of stiff end and power input, elastic sheet metal free end can be followed release and be done elevating movement; Described output conductor extends the quiet sheet metal that pair of end portions is positioned at the elastic sheet metal free end top of drawing from power input; Power output end is extended with a pair of elastic sheet metal, this to elastic sheet metal free end between the elastic sheet metal of drawing from power input and the quiet sheet metal of output conductor, when reset button lead and snap close hook location, the elastic sheet metal of drawing from power input drives the elastic sheet metal of drawing from power output end to rise to together with the quiet sheet metal of output conductor and contacts conducting.
As the second preferred version, described power input is extended with a pair of metallic conductor being connected with circuit board through two induction coils and end, on circuit board, draw the elastic sheet metal of the extended metallic conductor conducting of a pair of stiff end and power input, elastic sheet metal free end can be followed release and be done elevating movement, and elastic sheet metal free end has two pairs of contacts; Described output conductor extends a pair of quiet sheet metal, and the quiet sheet metal of output conductor end has the contact that is positioned at the elastic sheet metal free end top of drawing from power input; Power output end is extended with a pair of quiet sheet metal, this has the contact that is positioned at the elastic sheet metal top of drawing from power input to quiet sheet metal end, when reset button lead and snap close hook location, quiet sheet metal contact, the quiet sheet metal of the output conductor contact that draw with power output end respectively the free-ended two pairs of contacts of elastic sheet metal of drawing from power input contact conducting.
As the 3rd preferred version, described power input is extended with a pair of sheet metal being connected with circuit board through two induction coils and end, and the sheet metal that power input and power output end are drawn draws and be fixed on release by flexible wire; Described output conductor is drawn two pairs of quiet sheet metals upper and lower corresponding with the sheet metal of drawing from power input and power output end respectively, when reset button lead and snap close hook location, the sheet metal of drawing with power output end from power input rises to together with the quiet sheet metal of output conductor and contacts conducting.
Further, described release top is provided with for accelerate the reset button lead flexible member separated with snap close when tripping, reset button lead is through this flexible member, flexible member upper end and reset button lead positioning step offset, and flexible member lower end has the support portion that when compression can offset with release and can offset with tripping coil frame respective support position while restoring.
Further, the electric discharge leg of described combination sheet metal and/or be provided with discharge tip corresponding to the power input of combination sheet metal electric discharge leg.
Further, described in be positioned at the quiet contact jaw of combination sheet metal below moving sheet metal one end be plugged on circuit board, the other end can contact with the quiet contact jaw of combination sheet metal under free state, moves sheet metal upper end and by release, pressed location under static state; On circuit board, be also plugged with a transition metal sheet, transition metal sheet is provided with and moves sheet metal and coordinate the first fixed contact that forms simulation leakage current generating switch, the second fixed contact that one of sheet metal of drawing with power input when being also provided with and extending upwardly to sheet metal below that power input draws, not resetting contacts.
Further, in described housing, be also provided with pressure trip push button, force trip push button lead below to there is driving inclined-plane, in housing, be also provided with the pressure dropout driving chip of snap close parallel relatively, force dropout driving chip to have one and drive the hook of through hole that inclined-plane coordinates and and snap fit with testing button lead, snap close has the drive hole that confession pressure dropout driving chip leg stretches into.
Further, on described combination sheet metal, have for the limiting through hole of forcing trip push button lead to stretch into.
Further, described circuit board top is provided with the combined liner plate of an electric insulation, and combination sheet metal is fixedly mounted on combined liner plate.
Further, be also packaged with a diode, the first cross-over connection conductor and the second cross-over connection conductor in described combined liner plate, each functor pin is plugged on circuit board through combined liner plate.
Further, removablely on described combined liner plate be connected with capping, capping and combined liner plate are encapsulated in each functor in the insulating space being isolated from each other.
Further, in described housing, be provided with middle layer bracket for placing output conductor, for placing two induction coil skeletons of two induction coils and for placing the framework of trip coil of tripping coil, described combined liner plate is between framework of trip coil and circuit board.
Further, described housing comprises upper cover and base, upper cover and base joint portion be provided with for the fixing metal ground plate of wall or the combination of metal ground plate and metal tension disc, upper cover has output plughole, reset button putting hole and working station indicator light lead hole; Reset button lead is through middle layer bracket sheathed back-moving spring, back-moving spring lower end and middle layer bracket step are supported, reset button lead lower end has the positioning step with snap fit, release has the longitudinal through hole passing for reset button lead and the horizontal through hole that supplies snap close transverse shifting, snap close has flexible restoring organ, and snap close has the lockhole misplacing with reset button lead under nature; Release has for lifting the adjutage of the sheet metal that power input draws, upper end is set with auxiliary trip plate, auxiliary trip plate has and contacts spacing feet with framework of trip coil, auxiliary trip plate also has the longitudinal through hole passing for reset button lead, the longitudinal through hole of auxiliary trip plate upper end has step storage tank, on reset button lead, be also arranged with fast trip spring, fast trip spring is supported between reset button lead step and the step storage tank of auxiliary trip plate.
Further, described in be located at diode two pins on combined liner plate through circuit board, one end haptic element is connected with moving sheet metal one end inserting foot, other end haptic element is connected with the power input of control chip on circuit board.
Further, the first cross-over connection conductor two ends haptic element in described combined liner plate is connected with controllable silicon anode on circuit board through circuit board one end haptic element, and other end haptic element is connected with indicator light circuit.
Further, between described combined liner plate and circuit board, sealing is provided with its conductor two ends of the second cross-over connection conductor and is connected with controllable silicon negative electrode on circuit board through circuit board one haptic element one end, and other end haptic element is connected with control chip grounding leg on circuit board.
Further, described moving sheet metal below the quiet contact jaw of combination sheet metal is arranged between combined liner plate and release and with reset button and links, reset button moving sheet metal when descending touches to connect with transition metal sheet and forms simulation leakage current, moving sheet metal and the quiet contact jaw formation of combination sheet metal path when reset button upwards promotes.
Further, described pressure dropout driving chip is arranged between framework of trip coil and combination sheet metal, and framework of trip coil is provided with for the stopper slot of forcing dropout driving chip to move; Or, force dropout driving chip to be arranged on combination sheet metal below
Compared with prior art, beneficial effect of the present invention is: combination sheet metal as the quiet contact chip of electric discharge sheet and simulation leakage current generating switch, save die cost and simplify assembly technology simultaneously, and combination sheet metal area of dissipation is large, effectively reduces temperature rise simultaneously; The conductive metal sheet that activity is plugged on combination sheet metal is connected with power input as middle conductor Test Switchboard one end, reduces a tie point on circuit board, utilizes the heat radiation of combination sheet metal simultaneously; By forcing the horizontal snap close of dropout actuator to move horizontally, snap close can not done elevating movement under the domatic effect of driving, trips rapider, effectively prevents sparking; The functors such as combination sheet metal, transition metal sheet, pressure dropout actuator all encapsulate the interior integral body afterwards of combined liner plate and are plugged on circuit board, save installation time, effectively prevent between instantaneous pressure components and parts discharging and striking sparks simultaneously; Setting is encapsulated in the cross-over connection conductor in combined liner plate, can directly intersect in length and breadth, greatly simplifies circuit, reduces circuit board temperature rise simultaneously.
Fig. 1 is the assembly structure schematic diagram of the embodiment of the present invention one;
Fig. 2 is the decomposition texture schematic diagram of the embodiment of the present invention one;
Fig. 3 is the decomposition texture schematic diagram of the embodiment of the present invention one enclosure interior primary element;
Fig. 4 is the structural representation that in the embodiment of the present invention one, the combination sheet metal at belt discharge tip and the power input at belt discharge tip do not coordinate;
Fig. 5 is the combination sheet metal at belt discharge tip in the embodiment of the present invention one and the structural representation that power input at belt discharge tip does not coordinate;
Fig. 6 is the structural representation that power input in the embodiment of the present invention one, power output end and output conductor three coordinate;
In Fig. 7 embodiment of the present invention one, from another angle, observe the structural representation that power input, power output end and output conductor three coordinate;
Fig. 8 is the A-A cutaway view of the embodiment of the present invention one under initial condition;
Fig. 9 is the B-B cutaway view of the embodiment of the present invention one under initial condition;
Figure 10 A-A cutaway view during by Imitating leakage current generating switch closed (not yet resetting) that is the embodiment of the present invention one in reset button;
Figure 11 B-B cutaway view during by Imitating leakage current generating switch closed (not yet resetting) that is the embodiment of the present invention one in reset button;
Figure 12 is the embodiment of the present invention one at the A-A cutaway view successfully resetting while being the power input sheet metal of drawing and output conductor conducting;
Figure 13 is the embodiment of the present invention one at the B-B cutaway view successfully resetting while being the power input sheet metal of drawing and output conductor conducting;
Figure 14 is that the embodiment of the present invention one is by forcing trip push button to force the A-A cutaway view of trip status;
Figure 15 is the circuit diagram of the embodiment of the present invention one;
Figure 16 is the decomposition texture schematic diagram of the embodiment of the present invention two;
Figure 17 is the decomposition texture schematic diagram of the embodiment of the present invention two enclosure interior primary elements;
Figure 18 is the structural representation that the embodiment of the present invention two combination sheet metals coordinate with power input;
Figure 19 is the structural representation that power input in the embodiment of the present invention two, power output end and output conductor three coordinate;
Figure 20 observes from another angle the structural representation that power input, power output end and output conductor three coordinate in the embodiment of the present invention two;
Figure 21 is the circuit diagram of the embodiment of the present invention two;
Figure 22 is the decomposition texture schematic diagram of the embodiment of the present invention three;
Figure 23 is the decomposition texture schematic diagram (flexible member of release top is elastic spring) of the embodiment of the present invention three enclosure interior primary elements;
Figure 24 is the decomposition texture schematic diagram (flexible member of release top is tower spring) of the another kind of enclosure interior primary element of the embodiment of the present invention three;
Figure 25 is the structural representation that power input in the embodiment of the present invention three, power output end and output conductor three coordinate;
Figure 26 observes from another angle the structural representation that power input, power output end and output conductor three coordinate in the embodiment of the present invention three;
Figure 27 is the structural representation that the embodiment of the present invention three combined liner plates coordinate with power output end;
Figure 28 is the circuit diagram of the embodiment of the present invention three.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation:
implement one
Shown in Figure 15, there is the earth leakage protective socket of anti-sparking and backing protection function, comprise housing, a pair of power input (21, 20), a pair of power output end (80, 81), a pair of output conductor (8, 9), reset button 2 and circuit board 12, in housing, be also provided with the release 27 with reset button interlock, in release 27, wear one can with the snap close 28 of reset button lead hook location, while being also provided with energising in housing, produce that field drives one iron core 32 clashes into that snap closes 28 make the reset button lead tripping coil L3 separated with snap close 28 and for responding to two induction coil (L1 of leakage current, L2), power input (21, 20), power output end (25, 19) and output conductor (8, 9) respectively draw at least pair of metal sheet, power input (21, 20) and power output end (25, 19) power input (21 when one of them can follow release 27 elevating movements and reset button lead and snap close 28 hook location to sheet metal in the sheet metal of drawing, 20), power output end (25, 19) and output conductor (8, 9) three is by the sheet metal contact conducting of drawing separately, circuit board 12 is provided with a combination sheet metal 35, and combination sheet metal 35 has connected with one of power input leg 35D that is connected, and also has the electric discharge leg 35A with another power input matched in clearance, combination sheet metal also extends quiet contact jaw in a quiet contact jaw 35B(the present embodiment and is provided with contact 35K), this quiet contact jaw 35B coordinates formation tripping coil channel selector, and (moving sheet metal free end 36C is the moving contact lever of simulation leakage current generating switch with the moving sheet metal 36 that is positioned at this quiet contact jaw below, the quiet contact jaw in right side that quiet contact jaw 35B is tripping coil channel selector, shown in Figure 15).
In the present embodiment, power input (21,20), power output end (25,19) and output conductor (8,9) are respectively drawn pair of metal sheet, the set-up mode of three pairs of sheet metals is as follows: power input (21,20) is extended with a pair of sheet metal being connected with circuit board 12 through two induction coils (L1, L2) and end, on circuit board 12, draw the elastic sheet metal (17,18) of a pair of stiff end and the extended sheet metal conducting of power input, elastic sheet metal (17,18) free end can be followed release 27 and be done elevating movement; Output conductor (8,9) extends the quiet sheet metal (with contact 8A, 9A) that pair of end portions is positioned at elastic sheet metal (17,18) the free end top of drawing from power input; Power output end (80,81) is extended with a pair of elastic sheet metal (19,25) (riveting by rivet 19C, 25C), this to elastic sheet metal free end between the elastic sheet metal of drawing from power input and the quiet sheet metal of output conductor, when reset button lead and snap close 28 hook location, the elastic sheet metal of drawing from power input (21,20) drives the elastic sheet metal of drawing from power output end (80,81) to rise to together with the quiet sheet metal of output conductor and contacts conducting.
The electric discharge leg of combination sheet metal 35 and power input keep at a certain distance away and just can discharge instantaneous pressure, for further improving discharge effect, the electric discharge leg of combination sheet metal can arrange a discharge tip, on power input corresponding to combination sheet metal electric discharge leg, a discharge tip also can be set, shown in Fig. 4 is the relative electric discharge of live wire input 20 of combination sheet metal and power input, live wire input 20 is provided with discharge tip 20A, shown in Fig. 5 is also the relative electric discharge of live wire input 20 of combination sheet metal and power input, combination sheet metal electric discharge leg 35A is provided with discharge tip, certainly can also be combined into other various ways, for example combine the electric discharge leg zero line electric discharge relatively of sheet metal.Discharge tip can also can be integrally formed with electric discharge sheet split setting, for easy to process, thereby can make discharge side protuberance form discharge tip from opposite side punching press.
Moving sheet metal 36 one end that are positioned at the quiet contact jaw 35B of combination sheet metal below are plugged on circuit board 12, and the other end can contact with the quiet contact jaw 35B of combination sheet metal under free state, and location is pressed by release 27 in moving sheet metal 36 upper ends under static state; On circuit board 12, be also plugged with a transition metal sheet 37, transition metal sheet 37 is provided with and coordinates the first fixed contact 37A that forms simulation leakage current generating switch with moving sheet metal 36.
In housing, be also provided with and force trip push button 3, force trip push button lead below to there is the inclined-plane 3A of driving, in housing, be also provided with the pressure dropout driving chip 31 of snap close 28 parallels relatively, force dropout driving chip 31 to have through hole 31B and a hook 31A who coordinates with snap close 28 who drives inclined-plane 3A to coordinate with testing button lead, snap close 28 has for the drive hole 28B that forces dropout driving chip leg 31A to stretch into.For preventing forcing to shake in the descending process of trip push button, on combination sheet metal 35, have for the limiting through hole 35C that forces trip push button lead to stretch into.
For ease of assembling, circuit board 12 tops are provided with the combined liner plate 23 of an electric insulation, and combination sheet metal 35 is fixedly mounted on combined liner plate 23.
In combined liner plate 23, be also packaged with a diode 53, the first cross-over connection conductor 52 and the second cross-over connection conductor 51, in the present embodiment, the first cross-over connection conductor 52 is placed in the opening up cavity of combined liner plate, and the second cross-over connection conductor 51 is placed in the downward opening cavity of combined liner plate, all in order to guarantee to have the accommodation space of mutual isolation, each functor is all placed on circuit board originally, can have multiple combination modes of emplacement after combined liner plate is set.Each functor pin is plugged on circuit board 12 through combined liner plate; cross-over connection conductor the spatial limitation that can break through circuit board itself is set; between circuit, can intersect in length and breadth; greatly simplified circuit; alleviated the carrying burden of circuit board simultaneously; the mutual insulation blocking of each parts, effectively extends whole service life.Removablely on combined liner plate 23 be connected with capping 24, capping 24 is encapsulated in each functor in the insulating space being isolated from each other with combined liner plate 23.
In housing, be provided with middle layer bracket 7 for placing output conductor, for placing two induction coil skeletons 13 of two induction coils and for placing the framework of trip coil 14 of tripping coil L3, combined liner plate 23 between framework of trip coil 14 and circuit board 12, i.e. framework of trip coil below, circuit board 12 tops.
Housing comprises upper cover 1 and base 26, upper cover 1 and base 26 joint portions be provided with for the fixing metal ground plate 6 of wall, in order to prevent that ground wire from getting loose, the combination of metal ground plate and metal tension disc also can be set, and upper cover 1 has output plughole 1A, reset button putting hole 1B and working station indicator light lead hole 1C; Reset button lead is through middle layer bracket 7 sheathed back-moving spring 4, back-moving spring 4 lower ends and middle layer bracket 7 steps are supported, reset button lead lower end has the positioning step 2A with snap fit, release 27 has the longitudinal through hole passing for reset button lead and the horizontal through hole 27B that supplies snap close transverse shifting, snap close 28 has flexible restoring organ, and snap close 28 has the lockhole 28A misplacing with reset button lead under nature; Release 27 has for lifting the adjutage of the sheet metal (17,18) that power input draws, upper end suit auxiliary trip plate 15, auxiliary trip plate 15 has and contacts spacing feet 15B with framework of trip coil, auxiliary trip plate also has the longitudinal through hole 15A passing for reset button lead, auxiliary trip plate 15 longitudinal through hole upper ends have step storage tank, on reset button lead, be also arranged with fast trip spring 5, fast trip spring 5 is supported between reset button lead step and the step storage tank of auxiliary trip plate 15.
The 53 liang of pins of a diode that are located on combined liner plate 23 pass circuit board 12, and one end haptic element is connected with moving sheet metal 36 one end inserting foots, and other end haptic element is connected with the power input of control chip IC1 on circuit board.
The first cross-over connection conductor 52 two ends haptic elements in combined liner plate 23 are connected with controllable silicon V4 anode on circuit board through circuit board 12 one end haptic elements, and other end haptic element is connected with indicator light circuit.
Between combined liner plate 23 and circuit board 12, sealing is provided with the second cross-over connection conductor 51, and its conductor two ends are connected with controllable silicon V4 negative electrode on circuit board through 12, one haptic element one end of circuit board, and other end haptic element is connected with control chip IC1 grounding leg on circuit board.
Moving sheet metal 36 be arranged between combined liner plate 23 and release 27 and with reset button 2 interlocks, reset button 2 moving sheet metal 36 when descending touches to connect to form with transition metal sheet 37 simulates leakage current.In conjunction with Figure 15, can find out, the sheet metal (17 that power input is drawn, 18) the quiet sheet metal of drawing with output conductor forms first group of major loop switch (KR2-1, KR2-2), the sheet metal (17 that power input is drawn, 18) the quiet sheet metal (19 of drawing with power output end, 25) form second group of major loop switch (KR3-1, KR3-2), the contact 36A of moving sheet metal 36 and the channel selector that combines the quiet contact jaw 35B formation tripping coil L3 of sheet metal 35, the quiet contact jaw 37A of the contact 36A of moving sheet metal 36 and transition metal sheet 37 forms simulation leakage current generating switch.
In the present embodiment, force dropout driving chip 31 to be arranged on combination sheet metal 35 belows, steady for safety action, combined liner plate 23 is provided with for the stopper slot of forcing dropout driving chip to move; Also can will force dropout driving chip 31 to be arranged between framework of trip coil 14 and combination sheet metal 35, framework of trip coil 14 be provided with for the stopper slot of forcing dropout driving chip to move.
embodiment bis-
With reference to Figure 16 to Figure 21, the present embodiment is three pairs of sheet metal set-up modes with the difference of embodiment mono-: power input (20,21) is extended with a pair of sheet metal being connected with circuit board 12 through two induction coils (L1, L2) and end, on circuit board 12, draw the elastic sheet metal (17,18) of a pair of stiff end and the extended sheet metal conducting of power input, elastic sheet metal (17,18) free end can be followed release 27 and be done elevating movement, and elastic sheet metal (17,18) free end has two pairs of contacts; Output conductor (8,9) extends a pair of quiet sheet metal, and the quiet sheet metal of output conductor end has the contact (8A, 9A) that is positioned at the elastic sheet metal free end top of drawing from power input; Power output end (80,81) is extended with a pair of quiet sheet metal, this has the contact that is positioned at elastic sheet metal (17, the 18) top of drawing from power input to quiet sheet metal end, when reset button lead and snap close 28 hook location, quiet sheet metal contact (19B, 25B), the quiet sheet metal of the output conductor contact (8A, 9A) that draw with power output end respectively the free-ended two pairs of contacts of the elastic sheet metal of drawing from power input (17,18) contact conducting.
The second fixed contact 37B(that one of sheet metal of drawing with power input when the transition metal sheet 37 of the present embodiment is also provided with and extends upwardly to sheet metal below that power input draws, do not reset contacts is with reference to Figure 10, Figure 11, Figure 21).Reset button 2 moving sheet metal 36 when descending touches to connect with transition metal sheet 37 and forms simulation leakage current, and when reset button 2 upwards promotes, moving sheet metal 36 contacts formation path with the quiet contact jaw of combination sheet metal 35.In conjunction with Figure 12, can find out, the sheet metal (17 that power input is drawn, 18) the quiet sheet metal that wherein pair of contact and output conductor are drawn forms first group of major loop switch (KR2-1, KR2-2), the sheet metal (17 that power input is drawn, 18) the quiet sheet metal (19 that another pair of contact and power output end are drawn, 25) form second group of major loop switch (KR3-1, KR3-2), the contact 36A of moving sheet metal 36 and the channel selector that combines the quiet contact jaw 35B formation tripping coil L3 of sheet metal 35, the quiet contact jaw 37A of the contact 36A of moving sheet metal 36 and transition metal sheet 37 forms simulation leakage current generating switch.The sheet metal of drawing from power input in the present embodiment (17,18) also can be arranged to the form of front end jag, and a contact is set on each jag of every sheet metal.
embodiment tri-
With reference to Figure 22 to Figure 28, in the present embodiment, power input (21,20) is extended with a pair of sheet metal being connected with circuit board 12 through two induction coils (L1, L2) and end, and the sheet metal (19,25) that the sheet metal that power input is drawn (17,18) and power output end are drawn is drawn and is fixed on release 27 by flexible wire; Output conductor (8,9) draw two pairs respectively with contact (8B, 8A, 9B, 9A) the upper and lower corresponding quiet sheet metal of the sheet metal of drawing from power input and power output end, for guaranteeing good contacts, two pairs of quiet sheet metals are provided with the contact (17A, 18A) contacting with sheet metal (17,18) and the contact (8B, 9B) contacting with sheet metal (19,25), when reset button lead and snap close 28 hook location, the sheet metal of drawing with power output end from power input rises to together with the quiet sheet metal of output conductor and contacts conducting.
Release 27 tops are provided with for accelerate the reset button lead flexible member separated with snap close 28 when tripping, reset button lead is through this flexible member, and flexible member lower end can offset with release 27 while having compression and the support portion that can offset with tripping coil frame respective support position while restoring.The elastic spring 90 of flexible member in Figure 23 for upwards swelling, spring reed 90 is provided with the installation foot 90A that can insert release installing hole 27F, spring reed 90 is also provided with the feet 90C(support portion that when compression can offset with release 27 and can offset with 14Z surface, tripping coil frame respective support position while restoring), when reset button is pressed, elastic spring struts pressing, and during tripping operation, elastic spring is upspring reset button; Flexible member in Figure 24 is tower spring 95, the upper end 95A of spring 95 and the positioning step on reset button lead offset, the 95B(support portion, lower end of spring 95) when compression can offset with release 27 upper surfaces and while restoring and tripping coil frame respective support position 14Z offset.In conjunction with Figure 22 Figure 28, can find out, the sheet metal (17 that power input is drawn, 18) the quiet sheet metal that wherein pair of contact and output conductor are drawn forms first group of major loop switch (KR2-1, KR2-2), the sheet metal (19 that power output end is drawn, 25) be provided with pair of contact (19A, 25A) with output conductor end (8, 9) contact (8A on the quiet sheet metal of drawing, 9A) form second group of major loop switch (KR3-1, KR3-2), the sheet metal (17 that power input is drawn, 18) and the power output end quiet sheet metal (19 of drawing, 25) follow together after release rises and make two groups of major loop switches closed, the contact 36A of moving sheet metal 36 and the channel selector that combines the quiet contact jaw 35B formation tripping coil L3 of sheet metal 35, the quiet contact jaw 37A of the contact 36A of moving sheet metal 36 and transition metal sheet 37 forms simulation leakage current generating switch.
The sheet metal structure form that power input (21,20), power output end (25,19) and output conductor (8,9) three draw can also have multiple variation, as long as meet three's conducting under the drive at release when reset button lead and snap close hook location.
Although the present invention illustrates and describes by reference to preferred embodiment,, those of ordinary skills should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can do the various variations in form and details.
Claims (19)
1. the earth leakage protective socket with anti-sparking and backing protection function, comprise housing, a pair of power input, a pair of power output end, a pair of output conductor, reset button and circuit board, in housing, be also provided with the release with reset button interlock, in release, wear the snap close that can locate with reset button lead hook, in housing, be also provided with that when energising produces that field drives one iron core clashes into that snap close makes the reset button lead tripping coil separated with snap close and for responding to two induction coils of leakage current, it is characterized in that: described power input, power output end and output conductor are respectively drawn at least pair of metal sheet, power input when one of them can follow release elevating movement and reset button lead and snap close hook location to sheet metal in the sheet metal that power input and power output end are drawn, power output end contacts conducting with output conductor three by the sheet metal of drawing separately, described circuit board is provided with a combination sheet metal, and combination sheet metal has the be connected leg connected with one of power input, also has the electric discharge leg with another power input matched in clearance, combination sheet metal also extends a quiet contact jaw, and this quiet contact jaw coordinates and forms tripping coil channel selector with the moving sheet metal that is positioned at this quiet contact jaw below.
2. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1, it is characterized in that: described power input is extended with a pair of metallic conductor being connected with circuit board through two induction coils and end, on circuit board, draw the elastic sheet metal of the extended metallic conductor conducting of a pair of stiff end and power input, elastic sheet metal free end can be followed release and be done elevating movement; Described output conductor extends the quiet sheet metal that pair of end portions is positioned at the elastic sheet metal free end top of drawing from power input; Power output end is extended with a pair of elastic sheet metal, this to elastic sheet metal free end between the elastic sheet metal of drawing from power input and the quiet sheet metal of output conductor, when reset button lead and snap close hook location, the elastic sheet metal of drawing from power input drives the elastic sheet metal of drawing from power output end to rise to together with the quiet sheet metal of output conductor and contacts conducting.
3. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1, it is characterized in that: described power input is extended with a pair of sheet metal being connected with circuit board through two induction coils and end, on circuit board, draw the elastic sheet metal of the extended sheet metal conducting of a pair of stiff end and power input, elastic sheet metal free end can be followed release and be done elevating movement, and elastic sheet metal free end has two pairs of contacts; Described output conductor extends a pair of quiet sheet metal, and the quiet sheet metal of output conductor end has the contact that is positioned at the elastic sheet metal free end top of drawing from power input; Power output end is extended with a pair of quiet sheet metal, this has the contact that is positioned at the elastic sheet metal top of drawing from power input to quiet sheet metal end, when reset button lead and snap close hook location, quiet sheet metal contact, the quiet sheet metal of the output conductor contact that draw with power output end respectively the free-ended two pairs of contacts of elastic sheet metal of drawing from power input contact conducting.
4. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1, it is characterized in that: described power input is extended with a pair of sheet metal being connected with circuit board through two induction coils and end, and the sheet metal that power input and power output end are drawn draws and be fixed on release by flexible wire; Described output conductor is drawn two pairs of quiet sheet metals upper and lower corresponding with the sheet metal of drawing from power input and power output end respectively, when reset button lead and snap close hook location, the sheet metal of drawing with power output end from power input rises to together with the quiet sheet metal of output conductor and contacts conducting.
5. the earth leakage protective socket with anti-sparking and backing protection function according to claim 4; it is characterized in that: described release top is provided with for accelerate the reset button lead flexible member separated with snap close when tripping; reset button lead is through this flexible member; flexible member upper end and reset button lead positioning step offset, and flexible member lower end has that when compression can offset with release and the support portion that can offset with tripping coil frame respective support position when static state.
6. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1, is characterized in that: the electric discharge leg of described combination sheet metal and/or be provided with discharge tip corresponding to the power input of combination sheet metal electric discharge leg.
7. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1, it is characterized in that: described in be positioned at the quiet contact jaw of combination sheet metal below moving sheet metal one end be plugged on circuit board, the other end can contact with the quiet contact jaw of combination sheet metal under free state, and location is pressed by release in moving sheet metal upper end under static state; On circuit board, be also plugged with a transition metal sheet, transition metal sheet is provided with and moves sheet metal and coordinate the first fixed contact that forms simulation leakage current generating switch, the second fixed contact that one of sheet metal of drawing with power input when being also provided with and extending upwardly to sheet metal below that power input draws, not resetting contacts.
8. the earth leakage protective socket with anti-sparking and backing protection function according to claim 1; it is characterized in that: in described housing, be also provided with pressure trip push button; force trip push button lead below to there is driving inclined-plane; in housing, be also provided with the pressure dropout driving chip of snap close parallel relatively; force dropout driving chip to have one and drive the hook of through hole that inclined-plane coordinates and and snap fit with testing button lead, snap close has the drive hole that confession pressure dropout driving chip leg stretches into.
9. the earth leakage protective socket with anti-sparking and backing protection function according to claim 8, is characterized in that: on described combination sheet metal, have for the limiting through hole of forcing trip push button lead to stretch into.
10. the earth leakage protective socket that has anti-sparking and backing protection function according to claim 1, is characterized in that: described circuit board top is provided with the combined liner plate of an electric insulation, and combination sheet metal is fixedly mounted on combined liner plate.
11. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 10; it is characterized in that: in described combined liner plate, be also packaged with a diode, the first cross-over connection conductor and the second cross-over connection conductor, each functor pin is plugged on circuit board through combined liner plate.
12. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 11, is characterized in that: removablely on described combined liner plate be connected with capping, capping and combined liner plate are encapsulated in each functor in the insulating space being isolated from each other.
13. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 10; it is characterized in that: in described housing, be provided with middle layer bracket for placing output conductor, for placing two induction coil skeletons of two induction coils and for placing the framework of trip coil of tripping coil, described combined liner plate is between framework of trip coil and circuit board.
14. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 13, it is characterized in that: described housing comprises upper cover and base, upper cover and base joint portion be provided with for the fixing metal ground plate of wall or the combination of metal ground plate and metal tension disc, upper cover has output plughole, reset button putting hole and working station indicator light lead hole; Reset button lead is through middle layer bracket sheathed back-moving spring, back-moving spring lower end and middle layer bracket step are supported, reset button lead lower end has the positioning step with snap fit, release has the longitudinal through hole passing for reset button lead and the horizontal through hole that supplies snap close transverse shifting, snap close has flexible restoring organ, and snap close has the lockhole misplacing with reset button lead under nature; Release has for lifting the adjutage of the sheet metal that power input draws, upper end is set with auxiliary trip plate, auxiliary trip plate has and contacts spacing feet with framework of trip coil, auxiliary trip plate also has the longitudinal through hole passing for reset button lead, the longitudinal through hole of auxiliary trip plate upper end has step storage tank, on reset button lead, be also arranged with fast trip spring, fast trip spring is supported between reset button lead step and the step storage tank of auxiliary trip plate.
15. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 11; It is characterized in that: described in be located at diode two pins on combined liner plate through circuit board, one end haptic element is connected with moving sheet metal one end inserting foot, other end haptic element is connected with the power input of control chip on circuit board.
16. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 11; It is characterized in that: the first cross-over connection conductor two ends haptic element in described combined liner plate is connected with controllable silicon anode on circuit board through circuit board one end haptic element, and other end haptic element is connected with indicator light circuit.
17. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 11; It is characterized in that: between described combined liner plate and circuit board, sealing is provided with its conductor two ends of the second cross-over connection conductor and is connected with controllable silicon negative electrode on circuit board through circuit board one haptic element one end, and other end haptic element is connected with control chip grounding leg on circuit board.
18. earth leakage protective sockets that have anti-sparking and backing protection function according to claim 11; It is characterized in that: described moving sheet metal below the quiet contact jaw of combination sheet metal is arranged between combined liner plate and release and with reset button and links, when reset button is descending, moving sheet metal and transition metal sheet touch to connect and form simulation leakage current, and when reset button upwards promotes, moving sheet metal forms path with the quiet contact jaw of combination sheet metal.
19. earth leakage protective sockets with anti-sparking and backing protection function according to claim 8: it is characterized in that: described pressure dropout driving chip is arranged between framework of trip coil and combination sheet metal, and framework of trip coil is provided with for the stopper slot of forcing dropout driving chip to move; Or, force dropout driving chip to be arranged on combination sheet metal below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380280.4A CN102882036B (en) | 2012-08-24 | 2012-10-08 | Earth leakage protection socket with functions of sparking prevention and reverse connection protection |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210303203 | 2012-08-24 | ||
| CN201210303203.9 | 2012-08-24 | ||
| CN201210380280.4A CN102882036B (en) | 2012-08-24 | 2012-10-08 | Earth leakage protection socket with functions of sparking prevention and reverse connection protection |
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| Publication Number | Publication Date |
|---|---|
| CN102882036A CN102882036A (en) | 2013-01-16 |
| CN102882036B true CN102882036B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210380280.4A Active CN102882036B (en) | 2012-08-24 | 2012-10-08 | Earth leakage protection socket with functions of sparking prevention and reverse connection protection |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104055A (en) * | 2014-06-16 | 2014-10-15 | 温州市万盛电器有限公司 | Electric leakage detection protection circuit with timed self-checking and reverse wiring protection functions |
| TWI565151B (en) * | 2015-04-14 | 2017-01-01 | Acceptable socket | |
| CN110972379B (en) * | 2019-12-27 | 2021-07-27 | 浙江冠南能源科技有限公司 | Electric leakage protection detection system for intelligent street lamp and detection method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352656Y (en) * | 2008-12-31 | 2009-11-25 | 黄华道 | Novel multifunctional electric-leakage protection socket |
| CN102332700A (en) * | 2011-09-14 | 2012-01-25 | 黄华道 | Anti-lightning leakage detection and protection circuit |
| CN102354825A (en) * | 2011-06-30 | 2012-02-15 | 黄华道 | Electric leakage protection socket with discharge metal sheets |
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2012
- 2012-10-08 CN CN201210380280.4A patent/CN102882036B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352656Y (en) * | 2008-12-31 | 2009-11-25 | 黄华道 | Novel multifunctional electric-leakage protection socket |
| CN102354825A (en) * | 2011-06-30 | 2012-02-15 | 黄华道 | Electric leakage protection socket with discharge metal sheets |
| CN102332700A (en) * | 2011-09-14 | 2012-01-25 | 黄华道 | Anti-lightning leakage detection and protection circuit |
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| CN102882036A (en) | 2013-01-16 |
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