CN105590807A - Compact ground fault circuit interrupter - Google Patents
Compact ground fault circuit interrupter Download PDFInfo
- Publication number
- CN105590807A CN105590807A CN201610073150.4A CN201610073150A CN105590807A CN 105590807 A CN105590807 A CN 105590807A CN 201610073150 A CN201610073150 A CN 201610073150A CN 105590807 A CN105590807 A CN 105590807A
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- Prior art keywords
- circuit
- contact
- ground
- reed
- fault interrupter
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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
- H01H71/24—Electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
Abstract
A compact ground fault circuit interrupter comprises a base, an upper cover, a middle frame, a support reset mechanism, an electromagnetic releasing mechanism, a contact assembly, a grounding assembly, power supply input and output connection assemblies, a PCB board and an interrupter circuit. The interrupter circuit comprises a power supply circuit, an electric leakage grounding detection circuit, a signal amplification and rectification circuit, a single-chip microcomputer control circuit, a power supply detection and work indication circuit, a releasing mechanism control circuit and a reverse wiring protection circuit. The electromagnetic releasing mechanism is controlled by the electric leakage grounding detection circuit to act. The reverse wiring protection circuit comprises a reed switch and a relay, wherein the relay is arranged in such a manner that the direction of an iron core thereof is arranged along the length direction of the ground fault circuit interrupter. The power supply input and output connection assemblies comprise fixed member, movable members and connecting structures, and the movable members are arranged at the outer sides of the fixed member and are attached to the fixed members through the connecting structures. The number of the PCB board is one. The compact ground fault circuit interrupter has the advantages that the height size of the ground fault circuit interrupter is substantially reduced, the size is reduced, the structure is simple, and the implementation is easy.
Description
Technical field
The present invention relates to a kind of ground-fault interrupter of compactness.
Background technology
Ground-fault interrupter GFCI (GroundFaultCircuitInterrupter) is the earth leakage protective product in the North America such as the U.S., Canada, South American nations and regional extensive use. GFCI can, by its upper cover jack for load provides power supply, also by exporting coupling assembling to connecting load supplying thereon, provide Electrical Safety protection simultaneously.
As shown in Figures 1 to 7, existing GFCI generally includes base, be provided with the upper cover of jack, center, support resetting-mechanism, electromagnetic release mechanism, contact assembly, grounding assembly, power supply input coupling assembling, output coupling assembling, pcb board and be arranged on the breaker circuit on this pcb board, breaker circuit comprises power circuit, electric leakage grounded inspection circuit, signal amplification shaping circuit, single chip machine controlling circuit, power supply detects and working indicating, simulation leakage circuit, tripping mechanism control circuit and reverse wiring holding circuit, electromagnetic release mechanism is leaked electricity grounded inspection circuit control and is moved.
As shown in Figures 1 to 4, the pcb board of existing ground-fault interrupter comprises PCB mainboard 202 and PCB subplate 204, PCB mainboard 202 and PCB subplate 204 arranged stacked; Reed switch 203 (be shown in Fig. 5 in a kind of existing ground-fault interrupter circuit reverse wiring detect and the normally-closed contact K1 of executive circuit) is arranged on the downside of PCB mainboard 202, reed switch 203 is in normally off, descending when operation reset assembly 200, the release link lower end actuating spring switch 203 in reset assembly 200 disconnects; The relay iron of relay assembly 201 (be shown in Fig. 5 in a kind of existing ground-fault interrupter circuit reverse wiring detect and the negative-phase relay T4 of executive circuit) is arranged along the short transverse of ground-fault interrupter, in power supply input wires assembly 205, output coupling assembling 206, ambulatory splint 12 is arranged on the inner side of strap 82. Because said structure design is unreasonable, cause the height dimension of ground-fault interrupter larger.
The height dimension of ground-fault interrupter is the significant dimensions that affects installing space, installs for convenient, reduces preformed hole size, and reducing height dimension becomes the target of ground-fault interrupter structure optimization.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of ground-fault interrupter of compactness is provided, and overcomes that existing ground-fault interrupter height dimension is large, overall volume is large, require the defect that installing space is larger.
The technical solution adopted for the present invention to solve the technical problems is: the ground-fault interrupter of constructing a kind of compactness, comprise base, upper cover, center, support resetting-mechanism, electromagnetic release mechanism, contact assembly, grounding assembly, power supply input coupling assembling, output coupling assembling, pcb board and be arranged on the breaker circuit on this pcb board, this breaker circuit comprises power circuit, electric leakage grounded inspection circuit, signal amplification shaping circuit, single chip machine controlling circuit, power supply detects and working indicating, tripping mechanism control circuit and reverse wiring holding circuit, this electromagnetic release mechanism is subject to this electric leakage grounded inspection circuit control and moves,
This reverse wiring holding circuit comprises contact switch and relay, the driving mechanism that this contact switch and relay move as normally-closed contact and operation reverse wiring protection switch respectively in this reverse wiring holding circuit;
Described support resetting-mechanism comprises return unit assembly, and this return unit assembly comprises reset key, be connected to the release link of this reset key downside, be arranged on the back-moving spring of this reset key downside;
It is characterized in that,
Described relay is arranged along the length direction of this ground-fault interrupter by its iron core direction;
The wire fixing structure of described power supply input coupling assembling, output coupling assembling comprises respectively fixture, movable part and syndeton, this fixture is electrically connected with described pcb board, this fixture, movable part comprise cooperatively interact, the clamping face of clamping wires, this syndeton fits this fixture to be connected with movable part; This fixture is fixedly connected on described pcb board or the outer wall of described base, and this movable part is positioned at this fixture outside and is fitted and connected by this syndeton and this fixture;
The quantity of described pcb board is one.
In the ground-fault interrupter of compactness of the present invention, described fixture is strap or fixed block; Described syndeton is screw, be arranged on the screw that matches with this screw on described fixture, be arranged on the through hole passing for this screw on described movable part; Described movable part is ambulatory splint or packing ring.
In the ground-fault interrupter of a kind of compactness of the present invention, described fixture is strap or fixed block, and described syndeton is the wedge-shaped slot that is arranged on this fixture mating surface one side, and described movable part is through this wedge-shaped slot and this fixture close fit.
In the ground-fault interrupter of compactness of the present invention, comprise and be arranged on the PCB daughter board of described center upside and be arranged on the described contact switch on this PCB daughter board, this PCB daughter board is electrically connected with described pcb board, this contact switch comprises the long reed and the short reed that are connected on this PCB daughter board, this long reed and short leaf end comprise the contact that is in contact with one another cooperation, and this short reed is positioned at the upside of this long reed; The reset key of described return unit assembly comprises that being arranged on its downside coordinates, pushes with described long reed the auxiliary section that this length elasticity of spring leaf is out of shape, this long reed contact is separated with this short reed contact; This auxiliary section meets the job requirement of described reverse wiring holding circuit with the stroke that coordinates of this long reed.
In the ground-fault interrupter of compactness of the present invention, the auxiliary section of described reset key is the pressing lever that is arranged on described reset key end downside.
In the ground-fault interrupter of compactness of the present invention, comprise and be arranged on the PCB daughter board of described center upside and be arranged on the described contact switch on this PCB daughter board, this PCB daughter board is electrically connected with described pcb board, this contact switch comprises the long reed and the short reed that are connected on this PCB daughter board, this long reed and short leaf end comprise the contact that is in contact with one another cooperation, and this short reed is positioned at the downside of this long reed; The reset key of described return unit assembly comprises that being arranged on its downside coordinates, pushes with described short reed the auxiliary section that this short elasticity of spring leaf is out of shape, this short reed contact is separated with this long reed contact; This auxiliary section meets the job requirement of described reverse wiring holding circuit with the stroke that coordinates of this short reed.
In the ground-fault interrupter of compactness of the present invention; described contact switch adopts following structure: two break contacts that reverse wiring holding circuit normally-closed contact is set corresponding to the position of described slide block lower end on described PCT plate; in this slide block lower end, the electric-conductor corresponding to these two break contacts is set, this electric-conductor contacts and disconnects the conducting and the disconnection that form described normally-closed contact with these two break contacts.
In the ground-fault interrupter of compactness of the present invention, described electric-conductor is elastic component.
In the ground-fault interrupter of compactness of the present invention, described contact switch comprises helical spring and spacer pin, described electric-conductor is shaft-like, and the head of its body of rod comprises radial protrusion, and its body of rod appropriate location arranges the limit pin hole coordinating with described spacer pin, described slide block arranges the installing hole of the electric-conductor body of rod described in plug-in mounting, arrange at this installing hole middle part and pass through mutually with this installing hole and lateral dimension is greater than the spacing hole of this installing hole diameter, this spring housing is contained on this electric-conductor body of rod, radial protrusion by this electric-conductor body of rod head is spacing, this electric-conductor body of rod inserts in this installing hole, this spacer pin inserts from this spacing hole in the limit pin hole of this electric-conductor, this spring is positioned between this installing hole port and described radial protrusion in pressured state, the sliding stroke of electric-conductor in this installing hole described in this spacer pin and this spacing hole engagement limits.
Implement ground-fault interrupter and the control method thereof of a kind of compactness of the present invention, compared with the prior art, its beneficial effect is:
1. the wire fixing structure by power supply being inputted to coupling assembling, output coupling assembling is positioned at fixture inner side and is changed into movable part and be positioned at the structure in fixture outside by movable part, and the relay of erectting setting is changed into and being horizontally disposed with, on the one hand for the PCB mainboard being arranged in base has been expanded installing space, expand PCB mainboard area, the circuit structure of PCB subplate can be arranged on PCB mainboard, reduce the PCB subplate of arranged stacked; On the other hand, because the axial dimension of relay is greater than radial dimension, thereby being horizontally disposed with the dimensional requirement that has reduced setting height(from bottom), relay reduced the height dimension of ground-fault interrupter; Breaker height dimension has reduced by 6～10 millimeters than present level size, and effect is remarkable;
2. utilize idle space and the reset key structure of breaker center, the reed switch of the former PCB of being arranged on mainboard downside is arranged on breaker center, reduce the requirements of installation space of reed switch to circuit breaker base inside, thereby further reduced the height dimension of ground-fault interrupter.
3. simple in structure, easily implement.
Brief description of the drawings
Fig. 1 is the left view of existing ground-fault interrupter internal structure.
Fig. 2 is the cutaway view of A-A in Fig. 1.
Fig. 3 is that existing ground-fault interrupter removes the underside perspective view after base.
Fig. 4 is that existing ground-fault interrupter removes the upside stereogram after base.
Fig. 5 is the theory diagram of a kind of embodiment of existing ground-fault interrupter.
Fig. 6 is one of circuit diagram of a kind of embodiment of existing ground-fault interrupter.
Fig. 7 be a kind of embodiment of existing ground-fault interrupter circuit diagram two.
Fig. 8 be a kind of embodiment of existing ground-fault interrupter circuit diagram three.
Fig. 9 is one of circuit diagram of the another kind of embodiment of ground-fault interrupter of the present invention (two, three as Fig. 7, Fig. 8).
Figure 10 is upper cover, the base of the ground-fault interrupter of compactness of the present invention, the exploded perspective view of internal structure.
Figure 11 is the upside stereogram of the ground-fault interrupter internal structure of compactness of the present invention.
Figure 12 is the stereogram that the ground-fault interrupter internal structure of compactness of the present invention is decomposed right still.
Figure 13 is the sidepiece sectional block diagram of the ground-fault interrupter band base of compactness of the present invention.
Figure 14 is the internal structure stereogram of the ground-fault interrupter band center of compactness of the present invention.
Figure 15 is the stereogram of reset key assembly in the ground-fault interrupter of compactness of the present invention.
Figure 16 is the cutaway view of the ground-fault interrupter repeat circuit of compactness of the present invention.
Figure 17 is the left view of the ground-fault interrupter repeat circuit of compactness of the present invention.
Figure 18 is the stereogram of the ground-fault interrupter internal structure homing action state one of compactness of the present invention.
Figure 19 is the stereogram of the ground-fault interrupter internal structure homing action state two of compactness of the present invention.
Figure 20 is the stereogram of the ground-fault interrupter internal structure homing action state three of compactness of the present invention.
Figure 21 is the upside stereogram of the another kind of embodiment trip status of the ground-fault interrupter internal structure of compactness of the present invention.
Figure 22 is the reset on-state stereogram of ground-fault interrupter Figure 21 embodiment of compactness of the present invention.
Figure 23 be in ground-fault interrupter Figure 21 embodiment of compactness of the present invention with the slide block stereogram of the normally-closed contact K1 of reset switch S1 interlock.
Figure 24 is the sectional stereogram of slide block.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The name regulation of circuit symbol in accompanying drawing in description is: " circuit symbol _ figure number ". As the rectification circuit DB1 called after rectification circuit DB1_6 in accompanying drawing 6.
As shown in Fig. 5 to Figure 15, the ground-fault interrupter of compactness of the present invention comprises base 3, upper cover 1, center 2, support resetting-mechanism, electromagnetic release mechanism, contact assembly, grounding assembly 4, power supply input coupling assembling 9, output coupling assembling 8, pcb board 71 and be arranged on breaker circuit on pcb board 71 etc., this breaker circuit comprises power circuit 309, electric leakage grounded inspection circuit 302, signal amplification shaping circuit 303, single chip machine controlling circuit 301, power supply detects and working indicating 306, tripping mechanism control circuit 308, reverse wiring holding circuit 307 and simulation leakage circuit 305, electromagnetic release mechanism is leaked electricity grounded inspection circuit control and is moved.
In other embodiments, simulation leakage circuit 305 is not set, can realizes the object of the invention yet.
Reverse wiring holding circuit 307 comprises that the reverse wiring being connected detects control circuit and detects and executive circuit.
As shown in Fig. 6 to Fig. 8, Figure 12, Figure 13, in the present embodiment, the reverse wiring of reverse wiring holding circuit 307 detection control circuit comprises that single-chip microcomputer U4_8, filter capacitor C15_8, triggering current-limiting resistance R10_8, strong and weak electricity isolation optocoupler U6_6, triggering current-limiting resistance R19_6, false-touch prevention generating hinder R20_6 and bidirectional triode thyristor SCR3_6. this filter capacitor C15_8 is connected between the controllable silicon trigger end (8 pin) and earth terminal (14 pin) of this single-chip microcomputer U4_8, this triggering current-limiting resistance R10_8 is connected to the trigger control end of controllable silicon trigger end (8 pin) with this strong and weak electricity isolation optocoupler U6_6 of this single-chip microcomputer U4_8, the power voltage terminal VCC of this ground fault protection circuit of power supply termination of this strong and weak electricity isolation optocoupler U6_6, the first output of this strong and weak electricity isolation optocoupler of this triggering current-limiting resistance R19_6 mono-termination U6_6, the mains supply live wire output L2_6 of another this ground fault protection circuit of termination, false-touch prevention generating resistance R20_6 is connected between the control utmost point and a T2 utmost point of this bidirectional triode thyristor SCR3_6, and the control utmost point of this bidirectional triode thyristor SCR3_6 meets the second output of this strong and weak electricity isolation optocoupler U6_6, the mains supply live wire output L2_6 that the 2nd T2 utmost point connects this ground fault protection circuit.
The detection of reverse wiring holding circuit 307 executive circuit comprise filter capacitor C11_6, filter capacitor C13_6, normally-closed contact K1_6, normally opened contact K2_6, resistance R 18_6, normally closed switch S2_6 and negative-phase relay T4_6. This filter capacitor C11_6, filter capacitor C13_6 are in series; and this normally-closed contact K1_6, normally opened contact K2_6 are connected between a T2 utmost point of this bidirectional triode thyristor SCR3_6 and the mains supply live wire output L2_6 of this ground fault protection circuit, a T2 utmost point of this bidirectional triode thyristor of termination SCR3_6 of this filter capacitor C11_6. This resistance R 18_6 one end is connected on one end that this filter capacitor C11_6 is connected with this filter capacitor C13_6, mains supply zero line output N2_6 that the other end is connected to this ground fault protection circuit; R18_6 and C11_6, C13_6 form surge absorbing circuit; the surge voltage that absorbing load circuit and negative-phase relay T4_6 produce, holding circuit is normally worked. This normally closed switch S2_6 bis-A are arranged on the live wire L_6 and zero line N_6 of this ground fault protection circuit mains supply, and between the output and reset switch S1_6 of this ground fault protection circuit mains supply live wire L_6, zero line N_6. This normally closed switch S2_6 and this normally opened contact K2_6 interlock. A T2 utmost point of this bidirectional triode thyristor of control end one termination SCR3_6 of this negative-phase relay T4_6, the mains supply zero line output N2_6 of another this ground fault protection circuit of termination. This negative-phase relay T4_6 drives this normally closed switch S2_6 action by mechanism.
The circuit diagram of Fig. 6 to Fig. 8 is only a kind of embodiment of the ground-fault interrupter circuit of compactness of the present invention, and the ground-fault interrupter of compactness of the present invention can adopt other circuit of realizing its goal of the invention.
For example; can also adopt circuit diagram as shown in Figure 9; now, the detection of reverse wiring holding circuit 307 executive circuit comprise filter capacitor C11_6, filter capacitor C13_6, normally-closed contact K1_6, normally opened contact K2_6, resistance R 18_6, normally closed switch S2_6 and negative-phase relay T4_6. This filter capacitor C11_6, filter capacitor C13_6 are in series; and this normally-closed contact K1_6, normally opened contact K2_6 are connected between a T2 utmost point of this bidirectional triode thyristor SCR3_6 and the mains supply live wire output L2_6 of this ground fault protection circuit, a T2 utmost point of this bidirectional triode thyristor of termination SCR3_6 of this filter capacitor C11_6. This resistance R 18_6 one end is connected on one end that this filter capacitor C11_6 is connected with this filter capacitor C13_6, mains supply zero line output N2_6 that the other end is connected to this ground fault protection circuit; R18_6 and C11_6, C13_6 form surge absorbing circuit; the surge voltage that absorbing load circuit and negative-phase relay T4_6 produce, holding circuit is normally worked. This normally closed switch S2_6 bis-A are arranged on the live wire L_6 and zero line N_6 of this ground fault protection circuit mains supply, and between the output and reset switch S1_6 of this ground fault protection circuit mains supply live wire L_6, zero line N_6. This normally closed switch S2_6 and this normally opened contact K2_6 interlock. A T2 utmost point of this bidirectional triode thyristor of control end one termination SCR3_6 of this negative-phase relay T4_6, the mains supply zero line output N2_6 of another this ground fault protection circuit of termination. This negative-phase relay T4_6 drives this normally closed switch S2_6 action by mechanism.
Reed switch 46 is the normally-closed contact K1_6 (as shown in Figure 6) of reverse wiring holding circuit, and relay 21 is the T4_6 (as shown in Figure 6) of reverse wiring holding circuit.
Support resetting-mechanism comprises return unit assembly 65, and this return unit assembly 65 comprises reset key 6, be connected to the release link 33 of these reset key 6 downsides, be arranged on the back-moving spring 32 of these reset key 6 downsides.
As shown in Figure 12,16,17, relay 21 is arranged along the length direction of ground-fault interrupter by the axis direction of its iron core 67. Movable contact spring 22 ends of relay 21 are provided with relay movable contact 20, and the stationary contact 19 that this relay movable contact 20 is corresponding with ground-fault interrupter coordinates, and form the reverse wiring normally closed switch S2_6 in reverse wiring holding circuit.
The wire fixing structure of power supply input coupling assembling 9, power supply output coupling assembling 8 adopts following structure: comprise fixture, movable part and syndeton, fixture is electrically connected with pcb board 71, fixture, movable part comprise cooperatively interact, the clamping face of clamping wires, syndeton fits this fixture to be connected with movable part. Fixture is fixedly connected on pcb board or is connected on the outer wall of base, and movable part is positioned at this fixture outside and is fitted and connected by this syndeton and this fixture.
In the present embodiment, fixture adopts strap, syndeton adopts screw, is arranged on the screw that matches with this screw on fixture, is arranged on the through hole passing for this screw on movable part, and movable part adopts ambulatory splint, by bolt by movable part and fixture close fit. In other embodiments, fixture can adopt fixed block, and movable part can adopt packing ring.
In other embodiments, fixture adopts strap or fixed block, and syndeton adopts the wedge-shaped slot that is arranged on this fixture mating surface one side, and movable part adopts ambulatory splint or movable block etc., movable part, through this wedge-shaped slot and this fixture close fit, is realized the tight clamping to wire.
Ground-fault interrupter of the present invention arranges a pcb board 71.
Adopt said structure, relay horizontal (horizontally disposed), the pcb board of existing ground-fault interrupter is reduced to one, can effectively reduce the height dimension of ground-fault interrupter.
In order further to reduce the height dimension of ground-fault interrupter, as shown in Figure 13,14,15,18, setting is arranged on the PCB daughter board 48 of center 2 upsides, on this PCB daughter board 48, reed switch 46 is set, this PCB daughter board 48 is electrically connected by being connected wire 50 (or other conductors) with pcb board 71.
This reed switch 46 comprises the long reed 47 and the short reed 49 that are connected on this PCB daughter board 48, and the end of this long reed 47 and short reed 49 comprises the contact that is in contact with one another cooperation, and short reed 49 is positioned at the upside of long reed 47. Downside setting in the reset key 6 of return unit assembly 65 coordinates, can push these long reed 47 strains with long reed 47, makes the auxiliary section of the contact of this long reed 47 and the contact separation of this short reed 49; and this auxiliary section meets the job requirement (control and require) of reverse wiring holding circuit with the stroke that coordinates of this long reed 47, realizes the operation to reed switch 46.
In other embodiments; long reed 47 can be arranged on to the upside of short reed 49; now the auxiliary section of reset key 6 coordinates, pushes these short reed 49 strains with short reed 49, makes the contact of this short reed 49 and the contact separation of this long reed 47; auxiliary section meets the job requirement (control and require) of reverse wiring holding circuit with the stroke that coordinates of this short reed 49, realizes the operation to reed switch 46.
In this embodiment, the auxiliary section of reset key 6 is the pressing lever 72 that is arranged on reset key 6 end downsides.
In other embodiments, the auxiliary section of reset key 6 can adopt other structures, and for example, auxiliary section is set to boss coordinating with corresponding long reed 47 or short reed 49 etc.
The original state of the ground-fault interrupter of the present embodiment compactness is trip status. Now, reset key is in apical position under the effect of back-moving spring, and dropout iron core head is against the below in the reset locking hole of release link through the interlock hole of slide block, now, and the bottom of slide block in reset cradle; The sliding dawn slides backward under sliding dawn spring action, and the input stationary contact of breaker separates with two movable contacts on the sliding dawn, breaker socket aperture and the output of output wiring terminal non-transformer.
As shown in Figure 18 to Figure 20, the ground-fault interrupter homing action step of the present embodiment compactness is as follows:
1, when correct wiring, Manual press reset key 6 resets, and the elastic force that pressure overcomes back-moving spring 32 makes reset assembly 65 descending, and the pressing lever 72 of reset key 6 is pressed the distortion downwards of long reed 47 and disconnected with the contact of short reed 49, and reed switch 46 disconnects;
2, reset assembly 65 continues descendingly, and the dropout iron core 45 of electromagnetic release mechanism ejects under the elastic force effect of spring, until dropout iron core 45 slips into the reset locking hole 62 of release link 33;
3,, when withdrawing from after external force, reset assembly 65 moves up under the elastic force effect of back-moving spring 32; Because dropout iron core 45 front ends of electromagnetic release mechanism insert in the reset locking hole 62 of release link 33 through the interlock hole of reset slide block 35, therefore, reset slide block 35 forms in interlock and moves with reset assembly 65, on move past in journey, the inclined-plane of reset slide block 35 matches with the inclined-plane at sliding dawn 34, overcome the elastic force of sliding dawn spring 63, the sliding dawn 34 of promotion move forward and make to conduct electricity movable contact 17 and 16 conductings of input stationary contact, now reset mode is on-state, and breaker socket aperture all has electricity output with output coupling assembling.
The Leakage Protective Rule of the ground-fault interrupter of the present embodiment compactness is as follows: in the time detecting that breaker has leakage current, control circuit makes electromagnetic release mechanism action, the iron core of threading off is bouncing back under electromagnetic force, dropout core ends departs from reset locking hole, reset assembly moves up under the elastic force effect of back-moving spring, and reset slide block departs from reset cradle in original state under slide block resetting-mechanism effect; The sliding dawn slides to backward initial position under the effect of sliding dawn spring force; sliding dawn movable contact on the now sliding dawn disconnects with input stationary contact; now breaker is off-state in trip status, and now breaker socket aperture, with output coupling assembling all without electricity output, reaches earth leakage protective object.
In another embodiment of the present invention, reed switch 46 (i.e. the K1_6 of reverse wiring holding circuit as shown in Figure 6) can adopt structure as shown in FIG. 21 to 24.
As shown in Figure 21,22; the contact 92 of two disconnections of the K1_6 of reverse wiring holding circuit is set corresponding to the position of slide block 35 lower ends on PCT plate 71; arrange in slide block 35 lower ends and contact conducting with these two break contacts 92, separate the electric-conductor 91 disconnecting, two break contacts of this electric-conductor 91 and this 92 form the switch 90 that substitutes reed switch 46.
As shown in Figure 23,24, in the present embodiment, switch 90 also comprises helical spring 93 and electric-conductor 91 spacer pin 91a, and electric-conductor 91 is shaft-like, at the head of bar, radial protrusion is set, and is provided with the limit pin hole coordinating with spacer pin 91a in body of rod appropriate location; Slide block 35 is provided with the installing hole of plug-in mounting electric-conductor 91 bodies of rod, and arrange at the middle part of this installing hole and pass through mutually with this installing hole and lateral dimension is greater than the spacing hole (can adopt circular hole, slotted hole or square hole etc.) of this installing hole diameter, spring 93 is sleeved on the body of rod of electric-conductor 91, radial protrusion by electric-conductor 91 heads is spacing, the body of rod of electric-conductor 91 inserts in installing hole, spacer pin 91a inserts in the limit pin hole of electric-conductor 91 from this spacing hole, and engagement limits electric-conductor 91 by spacer pin and the spacing hole sliding stroke in installing hole. Spring 93, in pressured state, plays the function that buffering and electric-conductor 91 reset.
In other embodiments, electric-conductor and the installation on slide block 35 thereof can adopt other structures, for example, can adopt the metallic conduction shell fragment or the conductive rubber etc. that are arranged on slide block 35 lower surfaces.
The original state of the ground-fault interrupter of the present embodiment compactness is trip status. Now, reset key is in apical position under the effect of back-moving spring, and dropout iron core head is against the below in the reset locking hole of release link through the interlock hole of slide block, now, and the bottom of slide block in reset cradle; Switch 90 electric-conductor 91 under the effect of spring 93 contacts conducting with two contacts 92 on pcb board, the sliding dawn slides backward under sliding dawn spring action, the input stationary contact of breaker separates with two movable contacts on the sliding dawn, breaker socket aperture and the output of output wiring terminal non-transformer.
In the embodiment as shown in Figure 21,22, compact ground-fault interrupter homing action step is as follows:
1, when correct wiring, Manual press reset key 6 resets, and the elastic force that pressure overcomes back-moving spring 32 makes reset assembly 65 descending, and the dropout iron core of electromagnetic trip rack ejects under the effect of its spring, until dropout iron core slips into the reset locking hole of release link;
2,, when withdrawing from after external force, reset assembly 65 moves up under the elastic force effect of back-moving spring 32; Because dropout iron core 45 front ends of electromagnetic release mechanism insert in the reset locking hole 62 of release link 33 through the interlock hole of reset slide block 35, therefore, reset slide block 35 forms in interlock and moves with reset assembly 65, the switches conductive part 91 on slide block with on move, disconnect with two contacts 92 on pcb board. On move past in journey, the inclined-plane of reset slide block 35 matches with the inclined-plane at sliding dawn 34, overcomes the elastic force of sliding dawn spring 63, and the sliding dawn 34 of promotion move forward and make to conduct electricity movable contact 17 and 16 conductings of input stationary contact, now reset mode is on-state, and breaker socket aperture all has electricity output with output coupling assembling.
In the time detecting that breaker has leakage current, control circuit makes electromagnetic release mechanism action, the iron core of threading off is bouncing back under electromagnetic force, dropout core ends departs from reset locking hole, reset assembly moves up under the elastic force effect of back-moving spring, reset slide block departs from reset cradle in original state under slide block resetting-mechanism effect, is positioned at reset cradle bottom, and switch 90 electric-conductor 91 under the effect of spring 93 contacts conducting with two contacts 92 on pcb board; The sliding dawn slides to backward initial position under the effect of sliding dawn spring force; sliding dawn movable contact on the now sliding dawn disconnects with input stationary contact; now breaker is off-state in trip status, and now breaker socket aperture, with output coupling assembling all without electricity output, reaches earth leakage protective object.
Claims (10)
1. a compact ground-fault interrupter, comprise base, upper cover, center, support resetting-mechanism,Electromagnetic release mechanism, contact assembly, grounding assembly, power supply input coupling assembling, output coupling assembling, PCBPlate and be arranged on the breaker circuit on this pcb board, this breaker circuit comprises that power circuit, electric leakage connectGround testing circuit, signal amplification shaping circuit, single chip machine controlling circuit, power supply detection and working indicating,Tripping mechanism control circuit and reverse wiring holding circuit, this electromagnetic release mechanism is subject to this electric leakage ground connection to detect electricityRoad is controlled and is moved;
This reverse wiring holding circuit comprises contact switch and relay, and this contact switch and relay are anti-at thisTo the driving machine as normally-closed contact and the action of operation reverse wiring protection switch respectively in wiring holding circuitStructure;
Described support resetting-mechanism comprises return unit assembly, and this return unit assembly comprises reset key, is connected to thisThe release link of reset key downside, be arranged on the back-moving spring of this reset key downside;
It is characterized in that,
Described relay is arranged along the length direction of this ground-fault interrupter by its iron core direction;
The wire fixing structure of described power supply input coupling assembling, output coupling assembling comprise respectively fixture,Movable part and syndeton, this fixture is electrically connected with described pcb board, and this fixture, movable part compriseCooperatively interact, the clamping face of clamping wires, this syndeton fits this fixture to be connected with movable part;This fixture is fixedly connected on described pcb board or the outer wall of described base, and this movable part is positioned at this to be fixedPart outside is fitted and connected by this syndeton and this fixture;
The quantity of described pcb board is one.
2. the ground-fault interrupter of compactness as claimed in claim 1, is characterized in that, described fixingPart is strap or fixed block; Described syndeton is screw, be arranged on described fixture and this screwThe screw that matches, be arranged on the through hole passing for this screw on described movable part; Described movable part is movableClamping plate or packing ring.
3. the ground-fault interrupter of compactness as claimed in claim 1, is characterized in that, described fixingPart is strap or fixed block, and described syndeton is the wedge shape that is arranged on this fixture mating surface one sideGroove, described movable part is through this wedge-shaped slot and this fixture close fit.
4. the compact ground-fault interrupter as described in one of claims 1 to 3, is characterized in that,Comprise and be arranged on the PCB daughter board of described center upside and the described contact that is arranged on this PCB daughter board is openedClose, this PCB daughter board is electrically connected with described pcb board, and this contact switch comprises and is connected to this PCB daughter boardOn long reed and short reed, this long reed and short leaf end comprise the contact that is in contact with one another cooperation, this is shortReed is positioned at the upside of this long reed;
The reset key of described return unit assembly comprises that being arranged on its downside coordinates, pushes this length with described long reedElasticity of spring leaf distortion, the auxiliary section that this long reed contact is separated with this short reed contact; This auxiliary section and thisThe cooperation stroke of long reed meets the job requirement of described reverse wiring holding circuit.
5. the ground-fault interrupter of compactness as claimed in claim 4, is characterized in that, described resetThe auxiliary section of key is the pressing lever that is arranged on described reset key end downside.
6. the compact ground-fault interrupter as described in one of claims 1 to 3, is characterized in that,Comprise and be arranged on the PCB daughter board of described center upside and the described contact that is arranged on this PCB daughter board is openedClose, this PCB daughter board is electrically connected with described pcb board, and this contact switch comprises and is connected to this PCB daughter boardOn long reed and short reed, this long reed and short leaf end comprise the contact that is in contact with one another cooperation, this is shortReed is positioned at the downside of this long reed;
The reset key of described return unit assembly comprises that being arranged on its downside and described short reed coordinates, pushes that this is shortElasticity of spring leaf distortion, the auxiliary section that this short reed contact is separated with this long reed contact; This auxiliary section and thisThe cooperation stroke of short reed meets the job requirement of described reverse wiring holding circuit.
7. the ground-fault interrupter of compactness as claimed in claim 6, is characterized in that, described resetThe auxiliary section of key is the pressing lever that is arranged on described reset key end downside.
8. the compact ground-fault interrupter as described in one of claims 1 to 3, is characterized in that,Described contact switch adopts following structure: on described PCT plate, establish corresponding to the position of described slide block lower endPut two break contacts of reverse wiring holding circuit normally-closed contact, arrange in this slide block lower end corresponding to this twoThe electric-conductor of individual break contact, this electric-conductor forms described normally closed with contacting of these two break contacts with disconnectionThe conducting of contact and disconnection.
9. the ground-fault interrupter of compactness as claimed in claim 8, is characterized in that, described conductionPart is elastic component.
10. the ground-fault interrupter of compactness as claimed in claim 8, is characterized in that, described contactSwitch comprises helical spring and spacer pin; Described electric-conductor is shaft-like, and the head of its body of rod comprises radial convexRise, its body of rod appropriate location arranges the limit pin hole coordinating with described spacer pin; Described slide block arranges plug-in mounting instituteState the installing hole of the electric-conductor body of rod, arrange at this installing hole middle part and pass through mutually with this installing hole and lateral dimension is greater thanThe spacing hole of this installing hole diameter, this spring housing is contained on this electric-conductor body of rod, by this electric-conductor body of rod headRadial protrusion spacing, this electric-conductor body of rod inserts in this installing hole, this spacer pin inserts from this spacing hole shouldIn the limit pin hole of electric-conductor, this spring is positioned between this installing hole port and described radial protrusion in pressurized shapeState, the sliding stroke of electric-conductor in this installing hole described in this spacer pin and this spacing hole engagement limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610073150.4A CN105590807B (en) | 2015-12-26 | 2016-02-02 | A kind of compact ground-fault interrupter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510999097 | 2015-12-26 | ||
| CN2015109990976 | 2015-12-26 | ||
| CN201610073150.4A CN105590807B (en) | 2015-12-26 | 2016-02-02 | A kind of compact ground-fault interrupter |
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| CN105590807A true CN105590807A (en) | 2016-05-18 |
| CN105590807B CN105590807B (en) | 2018-05-08 |
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| CN201610073150.4A Active CN105590807B (en) | 2015-12-26 | 2016-02-02 | A kind of compact ground-fault interrupter |
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| CN110544606A (en) * | 2019-09-19 | 2019-12-06 | 福建阿古电务数据科技有限公司 | Edge electrical measurement control terminal and working method thereof |
| CN116798827A (en) * | 2023-07-20 | 2023-09-22 | 温州方特电气有限公司 | Two-section conductor type ground fault circuit breaker with reverse wiring protection function |
| US11972918B1 (en) | 2023-07-20 | 2024-04-30 | Wenzhou Fahint Electric Co., Ltd | Two-section conductor type ground fault circuit interrupter with reverse wiring protection function |
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|---|---|
| CN105590807B (en) | 2018-05-08 |
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