CN100444489C - Circuit interrupting device with single throw, double mode button for test-reset function - Google Patents
Circuit interrupting device with single throw, double mode button for test-reset function Download PDFInfo
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- CN100444489C CN100444489C CNB2004800057165A CN200480005716A CN100444489C CN 100444489 C CN100444489 C CN 100444489C CN B2004800057165 A CNB2004800057165 A CN B2004800057165A CN 200480005716 A CN200480005716 A CN 200480005716A CN 100444489 C CN100444489 C CN 100444489C
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Abstract
A typical duplex GFCI receptacle has two buttons, a test button that, when pressed, shuts off power to the receptacle and down stream devices, and a reset button that, when pressed, restores power to the GFCI and down stream devices. Generally, the test button is pressed to verify that the GFCI will interrupt power to the conductive paths and the reset button is pressed to reset the GFCI. In operation, the test portion of the GFCI will automatically break electrical continuity in one or more conductive paths (i.e., open the conductive path) between line and load sides upon the detection of a fault such as a reverse wiring condition, a ground fault, an open neutral and/or a defective GFCI device. When this happens the reset button in the typical GFCI receptacle is then pressed in an to attempt to restore power. The GFCI here disclosed has only one button which is used for both the test and reset operation. It is pressed to test the GFCI and its associated circuitry for operability and, only if all circuits are operable, upon release it resets the GFCI by closing open conductive paths. If, during operation, the test portion of the GFCI detects a fault and operates to shut off power to the receptacle and down stream devices, the pressing and releasing of the single button will reconnect power to the receptacle and down stream devices only if the GFCI is operational, if an open neutral condition does not exists and/or if the device is not reversed wired.
Description
The cross reference of related application
According to 35U.S.C 119 (e), the application requires to be filed in the priority that February 3, application number in 2003 are 60/444,548 U.S. Provisional Patent Application.
Technical field
The application is at reducible tripper, include but not limited to that ground-fault interrupter (GFCI), arc-fault circuit interrupter (AFCI), impregnated detect circuit breaker (IDCI), electrical leakage circuit breaker (ALCI), equipment residual current circuit breaker (ELCI), disconnect, contactor, latching relay and spiral piping arrangement.
Background technology
Many electric wiring devices have the conductive path between a line scan pickup coil side that can be connected to power supply, load end that can be connected to one or more loads and at least one described line scan pickup coil side and the load end.Being connected electrically to lead that power supply is provided or the guide current lead to one or more loads, is to be positioned at being connected of line scan pickup coil side and load end.Electric wiring device industry witness to being designed to interrupt for example demand of the growth of the tripper of the power supply of household electrical appliance, consumer electronic products and branch circuit or system of various loads.Especially, electrical code requires the circuit in Household bathroom and the kitchen that for example ground-fault interrupter (GFCI) is installed.At present, available GFCI device, the device of in No. the 4th, 595,894, the United States Patent (USP) of owning together, describing for example, the tripgear that uses electric triggering is with being electrically connected between interrupt line terminal and the load end mechanically.This device is reducible owing to for example detecting after earth fault is disconnected.In the device of in ' No. 894 patents, being discussed, be used to cause that the tripgear that the machinery of circuit (being the conductive path between line scan pickup coil side and the load end) disconnects comprises a solenoid (or breaking coil).A tripgear and the circuit that testing button is used to test be used for sense faults, a reset button is used for being electrically connected between reset line terminal and the load end.
Yet such example may occur: take place by the caused abnormal conditions of for example being struck by lightning, this not only causes unexpected increase and the device tripping operation of electric current at device, and causes being used to cause the forbidding of the mechanical tripgear that disconnects of circuit.This may take place under the unwitting situation of user.In this case, in the face of the GFCI of tripping operation, the user who does not discover may push reset button, and this will cause that conversely the device with an inoperative tripgear resets, and not have available earth fault protection.
And, the neutral state of the disconnection of defined in Underwriter Laboratories Inc. (UL) standard P AG 943A, may be present in to this GFCI device provides in the electric wire of power supply.If the neutral state that disconnects is present in the neutral line on circuit (with respect to the load) side of GFCI device, such example may occur: phase place (or fire) line from power supply is provided to the GFCI device produces current path by load end and the people who installs to ground.Under the situation that the neutral state that disconnects exists, the current GFCI device that can reset and trip is even may keep the neutral state that disconnects.
Merged the United States Patent (USP) of owning together the 6th of full content by reference at this, 040, the reducible tripper of gang has been described for No. 967, if the ifs circuit interrupt unit is the neutral state that can not operate or have disconnection, described tripper can lock the part that resets of this device.Merged the application of owning together the 09/175th that is filed on September 20th, 1998 of full content by reference at this, the reducible tripper of gang has been described for No. 228, if the ifs circuit interrupt unit is the neutral state that can not operate or have disconnection, described tripper can lock the part that resets of this device, and can be independent of the operation of circuit interruption part and interrupt conductive path.
Except circuit with load end is connected, some above-mentioned tripper has the load end of a user-accessible to connect.The load end of described user-accessible connects and comprises that the tie point of the power supply that provides from line scan pickup coil side can be provided from the outside one or more users.Load end connects to be connected normally with the load end of user-accessible and is electrically connected together.The example of this tripper is the GFCI socket, and wherein to be connected with load end be terminal screw to circuit, and the load end of user-accessible to connect be that plug to inner socket connects.As noted, this device is connected to outside lead so that line conductor is connected to line scan pickup coil side to be connected, the load end lead is connected to load end connects.Yet such situation may take place: tripper is connected to outer lead improperly, and line scan pickup coil side connects and line conductor is connected to the load connection so that load wire is connected to.This is called as reverse wiring.Be reversed at tripper under the situation of wiring, may eliminate error protection, even keeping error protection the load end connection to the load connection of user-accessible.
And relevant with the GFCI device studies show that, in the GFCI of all installations device, has found general 10-20% or more can't the operation by the user.Yet, after those devices are sent back to producer, find that great majority are spendable.Therefore, this is hinting device connected up by customer reverse (circuit-load end is put upside down).And the code of regulation and industry standards codes for example Underwriter Laboratories Inc. (UL) may require to make and have a GFCI device that the suggestion user correctly uses the prompting mark of the circuit of wire connection device and load terminal.Yet, point out as above-mentioned research institute, even this prompting may be not enough yet.And quite safe mistake wiring prevention scheme can be avoided the demand to this prompting mark.
Traditional GFCI device can use user load, for example face receptacle.Usually GFCI is four terminal installations, is used to connect two-phase or the AC lead-in wire and two LOAD lead-in wires that are used to be connected downstream unit of AC power supplies.If suitably lead connects traditional GFCI, GFCI can provide the earth fault protection to the socket of downstream unit and merging.Yet,, can provide not protected power supply to receptacle face if oppositely connect traditional GFCI with lead always.For example, when oppositely connecting traditional GFCI with lead, from current unevenness weighing apparatus sensor coil, face receptacle is " in the upstream ".Therefore, if traditional GFCI or be in the tripping operation or be in normal condition, then face receptacle is provided not protected power supply.
Although the depth guide packed with most of GFCI and the identification of AC and LOAD terminal are arranged, GFCI is still connected with the lead mistake sometimes.The reason that this problem exists is in new construction, and when setter connected new ground-fault interrupter, incoming line all seemed identical with downstream cables.Do not having power available to test which cable in the new construction of device guide current, this is a problem especially.
When considering that many typical duplex receptacle GFCI have one being pressed the testing button that will trip and cut off the electricity supply when checking the operation of built-in function among the GFCI, this problem can solve.Yet the use test button does not represent whether the duplex receptacle that embeds is protected.Usually, the user may and not know this point.The user is testing apparatus after installing only, and when pressing testing button, comes the tripping operation of testing fixture by the ticktack that for example can hear.This gives illusion of user, thinks that all are normal.When GFCI is oppositely connected by lead actual take place be GFCI from the downstream deenergization and protect each element of downstream, but do not protect the socket contact of GFCI itself.Device will be according to the state of inner member and no matter GFCI is tripping of how connecting.When test, oppositely connect not influence of GFCI with lead.
Summary of the invention
The present invention relates to a kind of have singly throw, reducible tripper of double mode button, wherein when downward stroke, start a test operation, if success is carried out a reset operation to connect loads to circuit when up stroke.
In one embodiment, tripper comprises a shell and is placed in phase place between circuit and load end and neutral conductive path within the described shell at least in part.The phase conductive path preferably ends at and can be electrically connected to first of power supply and connect, can connect and can be connected to the 3rd of at least one user accessible load conduction to second of at least one load conduction.Similarly, neutral conductive path preferably ends at and can be electrically connected to first of power supply and connect, can provide neutral second connecting and can provide neutral the 3rd connection that is connected at least one user accessible load of connecting at least one load;
Tripper also comprises a circuit interruption part that is placed within the shell, and it is configured to according to the generation of predetermined condition and causes outage among one of the phase place between described line scan pickup coil side and described load end and neutral conductive path or both.The part that resets is placed within the shell at least in part, and it is configured to rebulid in the conductive path that disconnects is electrically connected.
Between described circuit and load end, the phase conductive path comprises a plurality of can the disconnection to cause outage and closed to rebulid the contact that is electrically connected in the phase conductive path in the phase conductive path.Between described circuit and load end, neutral conductive path also comprises a plurality of can the disconnection to cause outage and closed to rebulid the contact that is electrically connected in neutral conductive path in neutral conductive path.In this configuration, circuit interruption causes that partly a plurality of contacts of phase place and neutral conductive path disconnect, and the part that resets causes a plurality of closings of contact of phase place and neutral conductive path.
Circuit interruption partly uses an electro-mechanical circuit interrupter to cut off the power supply to cause in phase place and neutral conductive path, and sensor circuit is with the generation of induction predetermined condition.For example, electro-mechanical circuit interrupter comprises a coil groups that a movable core is arranged.This movable core in response to the connection of coil groups and with a supporting element co-operate, described supporting element is positioned at primary importance and supports the availability of movable core with test circuit, ifs circuit has been tested successfully, and described element is positioned at the second place and supports movable core to be electrically connected to provide to phase place and/or neutral conductive path.
The ifs circuit interrupt unit is operation correctly, and tripper also stops to rebulid in phase place or neutral conductive path or two conductive paths and is electrically connected.That is to say that unless the described device that can not reset is the operation correctly of circuit interruption part.
Tripper can also comprise that is independent of the circuit interruption part and the tripping operation part of operation.This tripping operation part is placed within the shell at least in part, and is configured to the operation that is independent of the circuit interruption part and causes outage in phase place and/or neutral conductive path.In one embodiment, the trip portion branch comprises a trip arm that can be preferably within the shell and extend out from trip actuator from the trip actuator of housing exterior visit and.If preferably dispose this trip arm so that trip actuator when activateding, the machinery that is electrically connected in phase place and/or neutral conductive path disconnects.Trip actuator is a button.Yet, also can consider the actuator that other is known.
In order to understand the present invention better, and other details and characteristic, with reference to the following description of carrying out in conjunction with the accompanying drawings.
Description of drawings
With reference to accompanying drawing, describe the application's first-selected embodiment at this, wherein give similar element similar reference numeral, wherein:
Fig. 1 is the perspective view according to an embodiment of the application's grounding fault breaking apparatus;
Fig. 2 is the isometric view according to the part-structure of the principle of the invention that is positioned within the GFCI device of Fig. 1;
Fig. 3 is when main contacts and test contact disconnection, the end view of Fig. 1;
Fig. 4 is when main contacts disconnection and test contact closure, the end view of Fig. 1;
Fig. 5 is when main contacts closure and test contact disconnection, the end view of Fig. 1;
Fig. 6 is the schematic diagram of circuit that is used for the GFCI device of test circuit fault and reset diagram 1; And
Fig. 7-the 9th is illustrated in during the different piece of operational cycle the end view of the relation of trip arm, movable core, solenoid and tripping operation and main contacts.
Embodiment
The present invention considered can interrupting device line scan pickup coil side and the various types of trippers of at least one conductive path of load end.Conductive path is usually at the line scan pickup coil side that the power supply that provides is provided be connected between the load end of one or more loads separately.As noted, the various devices that can reset in the tripper family comprise: ground-fault interrupter (GFCI), arc-fault circuit interrupter (AFCI), impregnated detect circuit breaker (IDCI), electrical leakage circuit breaker (ALCI) and equipment residual current circuit breaker (ELCI).
Shown in the accompanying drawing and hereinafter described the present invention be incorporated in the GFCI socket that is adapted to be mounted within the one pack system line case that is used for residential electricity wiring system for example.Yet, can be included in according to device of the present invention among any one of various devices in the tripper family that can reset.
GFCI socket described here has circuit to be connected with load phase (or power supply), circuit is connected with load neutral and the load phase of user-accessible is connected with neutral.These connect the permission external conductor or electrical equipment is connected on the described device.These connections can be for example, to fix or connect the electric fastener of external conductor and conduction to tripper.The example of this connection comprises that terminal screw, lug plate, terminal and external plug connect.
In one embodiment, the GFCI socket has reset part, a part of detecting and the part that independently trips, wherein reset and the part that trips is singly thrown the bimodulus reset button by one and triggered successively selectively, wherein under when pushing away stroke, test with the availability of definite GFCI and the correct function of associated tracks, if all operations correctly of circuit that test shows is all, when release or up stroke, the GFCI that resets is electrically connected to set up in conductive path.Be independent of and reset and part of detecting, the tripping operation part operation is to be used for interrupting being electrically connected in the one or more conductive paths of described device.
The test described here and the part that resets are preferably used electromechanical element to interrupt (disconnection) and are connected circuit of (closure) described device and the one or more conductive paths between the load end.Yet electronic component is solid-state switch and support circuit for example, can be used for disconnecting and closed conductive path.
Usually, part of detecting is used for automatically interrupting being electrically connected in one or more conductive paths (promptly disconnecting conductive path) according to for example oppositely the connect up neutral and/or defective GFCI Device Testing of situation, earth fault, disconnection of fault between circuit and load end.The part that resets is used for the closed conductive path that disconnects.
In the present embodiment, test and reset portion branch comprise the single button of the availability that is used at first testing GFCI and interlock circuit thereof, and if all circuit of test shows all be available, the conductive path of closed disconnection then.In the present invention, if if if the described device of test expression is the exist neutral state and/or the described device quilt that disconnect that can not operate oppositely to be connected with lead, then can't reset at being electrically connected in the conductive path of disconnection.
In the present embodiment, comprise one independently tripping operation part interrupt being electrically connected in one or more conductive paths with the operation that is independent of described device.Like this, under the situation that described device is not correctly operated, it still can trip.
Above-mentioned feature can be included in any reducible tripper, but for for simplicity, in this description only at the GFCI socket.
Referring now to Fig. 1,, GFCI socket 10 by one by a shell 12 of relatively forming at the body 14 at center, removably fixing a surface or covering part 16 and a rear portion 18 on the described body.Surface portion 16 is useful on the input 20 and 21 that receives usually at the normal of the plug of the terminal appreciable the sort of model of lamp or electrical equipment wire component (not shown) or the pin that polarizes, and the ground-pin-receiver hole 22 that is used to support three pin plug.This socket comprises that also one is used for socket is fastened to a fixed band 24 on the terminal box.
A trip button 26 extends out by the opening 28 in the surface portion 16 of shell 12.This trip button is used to trigger a tripping operation action, and the operation of the circuit interruption part (or circuit breaker) that is placed in the device is stopped.The circuit interruption part that will be described in more detail below is used for interrupting in the circuit of device and being electrically connected of the one or more conductive paths between the load end.Constitute and to reset and a reset button 30 of the part of part of detecting extends out by the opening 32 in the surface portion 16 of shell 12.This reset button be one singly throw, the bimodulus reset button, when being pressed, it is used at first triggering a test action, and when being released, only when test action showed that circuit-under-test is correctly operated, homing action of initialization was to rebulid being electrically connected in the conductive path that disconnects.Like this, reset button is finished two functions with the order of singly throwing.
In the present embodiment, being connected electrically to existing family electric wiring is to carry out via terminal screw 34 and 36, and wherein screw 34 is that input (or circuit) phase place connects, and screw 36 is that output (or load) phase place connects.Should be noted that two extra terminal screws are positioned on the opposite side of shell 12.These extra terminal screws provide circuit to be connected with load neutral respectively.At United States Patent (USP) the 4th, 595, a kind of more detailed description of GFCI socket is provided in No. 894, merged its full content by reference at this.It should be noted that also terminal screw is the typical types that can be used for providing the binding post that is electrically connected.The example of other type of binding post comprises hold-down screw, pressure clamp, pressure plare, plug-in type connection, lead-out wire and quick linkage flag.
Referring to Fig. 2-5, expression be according to principle of the present invention, the element that uses during test and homing action.Part of detecting has a circuit breaker and can respond to the circuit of the fault (for example current unevenness weighing apparatus) on live wire and/or zero line.In the embodiment of GFCI socket, circuit breaker comprise a coil groups or 90, one on solenoid have a square-section, in response to the movable core 92 of the energising and the outage of described coil groups, and one with described movable core 92 interactional reseting pins.In response to the trigger winding group 90 by the earth fault of for example induction of the sensor circuit shown in Fig. 7, wherein Fig. 7 is the wiring schematic diagram that is used for the circuit that comprises the unbalanced differential transformer of at least one induced current of detection of ground faults.
By deformable spring support element 96, solenoid 90 is placed in neatly on the bonnet of GFCI, perhaps on printed wiring board or belt or any other suitable GFCI element.Spring support element 96 is connected to solenoidal rear end securely, and is fixed on the bonnet of GFCI for example when up or down pressure being imposed on movable core 92, allow solenoidal anterior 98 to come back rotation or swing around spring 96 with box lunch.A contact plate 100 is being supported in the front portion 98 of solenoid 90, and it can be made up of insulating material, and descends when solenoidal front portion descends thereupon, rises when rise in solenoidal front portion thereupon.Adjacent is a lever arm 102 and a fixed arm 106 that is supporting a fixed contact 108 that is supporting an armature contact 104 under contact plate 100.Armature contact 104 and fixed contact 108 co-operate.Contact the 104, the 108th, test contact 110 (referring to Fig. 7) when it is closed, allows the circuit of Fig. 7 to finish test function to determine the whether correctly operation of GFCI and interlock circuit.When closed test contact 110, when the test circuit of Fig. 7 represents that all circuit are all correctly operated, will connect solenoid 90 and movable core 92 drawn in the solenoidal main body and remain there up to test contact and disconnect.
Adjacent on the contact plate 100 is a lever arm 112 and a fixed arm 116 that is supporting a fixed line or load neutral contact 118 that is supporting a movable circuit or load phase contact 114 in insulation.So arrange the position of contact plate, test contact 106,108 and circuit or load contact 112,114, when being positioned at its inactive horizontal level shown in Fig. 2 and 3 with convenient solenoid, two cover contacts all disconnect (not contacting).When solenoid is placed on the test position, wherein solenoid be positioned at as shown in Figure 4 when upper/lower positions, test contact the 106, the 108th, (closed) of contact.When solenoid is placed on the reset position, when wherein solenoid is positioned at as shown in Figure 5 upwards position, main (circuit and load) contact the 112, the 114th, closed.
The movable core 92 of solenoid 90 is supporting an ellipse or rectangular opening 124, and its major axis is aimed at the length direction of movable core, and its minor axis is aimed at the width of movable core.Stipulate that the size of described shaped aperture passes opening 124 to allow a reseting pin 120 and a support boss 122 that is attached to the circle of reseting pin lower end securely.Back-moving spring 126 makes reseting pin 120 skews and moves up.So arrange the geometry and the relation of movable core 92 and reseting pin 94, to such an extent as to when the solenoid access failure, movable core extends fully, and support boss 122 is positioned on the movable core or under and with respect to opening 124 skews so that support boss can't be passed opening 124.Like this, circular protrusions and misalignment opening 124, and therefore can't pass this opening (referring to Fig. 3-5).Like this, in the time of on support boss is positioned at movable core 92, the downward pressure on the reseting pin will impose on the downward pressure of movable core, this will impel conversely movable core 92 and solenoid 90 bearing support spring 96 resistance and to lower swing.In a similar manner, in the time of under support boss is positioned at movable core 92, to apply one around the back-moving spring 126 of reseting pin on movable core and upward pressure, this will impel movable core 92 and solenoid 90 bearing the resistance of support spring 96 and upwards swing conversely.
Back-moving spring 126 makes reseting pin 94 skew and is positioned at the position of top.At first, solenoid is positioned at (referring to Fig. 3) on its horizontal level.Support boss 122 is positioned on the movable core, and misalignment opening 124, and under the solenoid and on the contact disconnect.The downward pressure that imposes on reset button now will born the upward pressure of back-moving spring and reset button moved down.The support boss 122 contact movable core upper surfaces of the opening 124 in the misalignment movable core, and impel it bearing the reaction force of support spring 96 and move down.In some example, 100 contacts of insulation contact plate also move down the test contact 104,108 of movable contact arm 102 with closed Fig. 7 circuit, and carry out a test.Showed fault if test result is expressed, anything can not take place further so, because solenoid does not keep connecting.It can not catch fire.Solenoid component still below the position on, and circuit-load contact 112,114, main contacts and not closed.
Yet,, connect solenoid 90 and iron core drawn in the solenoid if test result is represented all operations correctly of all circuit.Along with iron core shift-in solenoid, the opening that the opening in the iron core is shifted in the right and the iron core moves into supporting element 122 and aims at.In this example, along with apply downward pressure to reset button, support boss falls by opening, is positioned at then under the bottom surface of movable core.When supporting element fell by opening, the bias voltage action by support spring impel solenoid to return its horizontal level, and test contact disconnected.Along with the disconnection of test contact, flow to solenoidal electric current and stop, iron core be subjected to iron core back-moving spring bias voltage and return its extended position, and be positioned at now under the iron core, and the misalignment opening in the support boss of reseting pin end.Now from get on pressure under turning of reset button, the back-moving spring of reset button impels reseting pin to move up.The upward pressure of the back-moving spring of reseting pin is greater than the restoring force of support spring, and therefore, along with moving up of reseting pin, support boss 124 (being positioned under the iron core now and the misalignment opening) is moved iron core and solenoid 90 to top position, flows to load to allow electric current from power supply up to contact of insulation contact plate and closed main contacts 112,114.Referring to Fig. 4.
Like this, be pressed be released and allow to return its top position then singly throw reset button, finished at first test circuit, and if circuit-under-test test passes then reset circuit to allow to provide the dual mode capability of power supply to load.
If, when solenoid is in reset mode (top position) and reset button and is pressed, main contacts will disconnect and reset button be pressed during keep disconnecting.Reset button one is released then, and main contacts is just with closure, because support boss still is positioned under the movable core.
If for a certain reason, when main contacts closure and power supply were provided for load, the circuit inductance to of a Fig. 7 fault condition should impose on power supply coil 90 so, solenoid will spray and movable core will be by in the pull-in winding.Along with movable core is drawn in solenoid, the opening in the movable core will make itself aim at support boss 122, and back-moving spring 126 will haul support boss and pass opening 124 on movable core.Support spring will impel the movable core of separating from support boss to drop to horizontal level.Along with movable core moves on to horizontal level, power contact 112,114 disconnects and power supply will no longer offer load.At this moment, support boss is positioned on the movable core, and departs from opening, as shown in Figure 3.If press reset button now, it is downward-sloping to cause solenoidal front portion that support boss will be depressed movable core, and the test contact closure.But because fault condition occurred, solenoid will stop to spray, and power contact 112,114 will keep disconnecting.
Tripper can also comprise that is independent of circuit interruption part and the tripping operation part of work, so as circuit interruption partly become can not operate situation under, described device still can trip.The tripping operation part is preferably manually triggered, and uses mechanical organ to interrupt one or more conductive paths.Yet the tripping operation part can use circuit and/or electromechanical element to interrupt two kinds of phase place or neutral conductive path in the path.
The part of tripping operation part, be preferably the trip actuator of a button, the opening 28 that passes in the surface portion 16 of shell 12 extends out.In this exemplary embodiments, use trip actuator, with the GFCI socket that mechanically trips, promptly be independent of the operation of circuit interruption part and disconnect being electrically connected in one or more conductive paths.
The part of the part that resets, be preferably the return actuator 30 of a button, the opening 32 that passes in the surface portion 16 of shell 12 extends out.The ifs circuit interrupt unit is spendable, and reset button is used to trigger homing action, and it rebulids in the conductive path that disconnects and is electrically connected, and described device promptly resets.
Referring to Fig. 3, the exemplary embodiments of tripping operation part comprises a trip actuator, and button that is connected to a trip arm securely preferably, wherein said trip arm are connected to one makes it be in the spring of top position to the trip arm biasing.Trip arm comprises a surface at its end, when being used for descending movable core shift-in solenoid along with trip arm, engages the end of movable core 92.Referring to Fig. 4, wherein said device is in conduction state, and contact by closure 112,114 provides power supply to load, and press reset button and cause that trip arm descends engaging the end of movable core 92, and with in its shift-in solenoid.Along with movable core shift-in solenoid, elliptical openings in the movable core moves into the aligning supporting element, and by the action of support spring, thereby support boss is passed elliptical openings and is horizontal level and break contact 112,114 to allow movable core to be inclined upwardly.
With reference to the disclosed embodiments, whenever the mechanical trip device can be operated makes the tripper tripping operation.Be to be understood that the present invention is not limited to the embodiment of disclosed tripgear, other machinery or electro-mechanical structures also can be used.For example, be alternative in elliptical openings, can place support boss and trip arm to contact movable core endways, wherein place support boss to contact movable core on a position of rectangular movable core end, the end of trip arm contacts movable core on the second place of rectangular movable core end.
As noted, although the element that uses during circuit interruption and device homing action is electric mechanical in essence, the application also considers to use electronic component, for example solid-state switch and support circuit, and the element that can connect and interrupt other type that is electrically connected in the conductive path.
Although represented and describe and pointed out fundamental characteristics of the present invention, be to be understood that those familiar with the art can carry out various omissions, replacement and variation to the device describing and represent and the form and the details of operation thereof, and do not deviate from marrow of the present invention.
Claims (6)
1. tripper, it comprises:
A shell;
One be placed at least in part within the described shell, the phase conductive path between a line scan pickup coil side and load end, described phase conductive path ends at and can be electrically connected to first of electric current source and connect, can connect and can be connected to the 3rd of at least one user accessible load conduction to second of at least one load conduction;
One is placed within the described shell and is configured to the circuit interruption part that causes the electrical breaks in the described phase conductive path between described line scan pickup coil side and described load end according to predetermined state, comprises by the solenoid of elastic support member institute pivotal support; And
Be placed in the return actuator within the described shell at least in part, when being pressed, make described solenoid around described elastic support member pivoted with closed test contact, be used to start a test to determine whether described predetermined state occurs, if and this test determines described predetermined state not occur, then be provided at being electrically connected in the described phase conductive path between described line scan pickup coil side and the described load end.
2. the tripper of claim 1, wherein said return actuator be one singly throw, double mode button.
3. the tripper of claim 1, wherein said return actuator comprises a button, when it is pressed, start described test, and when being released, if described test is determined described predetermined state not occur, then be provided at being electrically connected in the described phase conductive path between described line scan pickup coil side and the described load end.
4. the tripper of claim 3, the described button that wherein said return actuator comprises is by impelling this button to return the spring assembly biasing of its initial position.
5. the tripper of claim 1, wherein said predetermined state comprise the failed operation of described circuit interruption part or the neutral state that disconnects or reverse cloth line states.
6. tripper, it comprises:
A shell;
All be placed within the described shell at least in part, a phase conductive path and a neutral conductive path between a line scan pickup coil side and load end, described phase conductive path ends at first connection that can be electrically connected to power supply, can connect to second of at least one load conduction, with can be connected to the 3rd of at least one user accessible load conduction, and described neutral conductive path ends at first connection that can be electrically connected to power supply, can provide neutral second connection that connects to described at least one load, with can provide neutral the 3rd connection that is connected to described at least one user accessible load;
One be placed within the described shell and be configured to according to predetermined state cause the described phase conductive path between described line scan pickup coil side and described load end and the circuit interruption part of the electrical breaks in the neutral conductive path, comprise by the solenoid of elastic support member institute pivotal support;
Be placed in the return actuator within the described shell, when being pressed, make described solenoid around described elastic support member pivoted with closed test contact, be used to determine whether to occur described predetermined state, if described then predetermined state does not occur, then in described phase conductive path and neutral conductive path, set up and be electrically connected; And
A tripping operation part is configured to cause described phase conductive path between described line scan pickup coil side and described load end and the electrical breaks in the neutral conductive path.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44454803P | 2003-02-03 | 2003-02-03 | |
| US60/444,548 | 2003-02-03 | ||
| US10/759,151 | 2004-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1757147A CN1757147A (en) | 2006-04-05 |
| CN100444489C true CN100444489C (en) | 2008-12-17 |
Family
ID=36689417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800057165A Expired - Fee Related CN100444489C (en) | 2003-02-03 | 2004-01-30 | Circuit interrupting device with single throw, double mode button for test-reset function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100444489C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101348526B1 (en) * | 2011-04-27 | 2014-01-06 | 미쓰비시덴키 가부시키가이샤 | Power source circuit and earth leakage breaker using the same |
| DE102012201852A1 (en) * | 2012-02-08 | 2013-08-08 | Siemens Aktiengesellschaft | Test button for an electrical switching device and electrical switching device |
| CN107863279B (en) * | 2017-11-02 | 2020-04-17 | 珠海格力电器股份有限公司 | Circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202662A (en) * | 1978-09-07 | 1993-04-13 | Leviton Manufacturing Company, Inc. | Resettable circuit breaker for use in ground fault circuit interrupters and the like |
| CN1043392C (en) * | 1993-06-15 | 1999-05-12 | 林社振 | Earth fault circuit breaker |
| US6246558B1 (en) * | 1998-08-24 | 2001-06-12 | Leviton Manufacturing Company | Circuit interrupting device with reverse wiring protection |
| CN1069998C (en) * | 1996-08-13 | 2001-08-22 | 施耐德电器工业公司 | Electronic differential circuit breaker |
| US6437700B1 (en) * | 2000-10-16 | 2002-08-20 | Leviton Manufacturing Co., Inc. | Ground fault circuit interrupter |
-
2004
- 2004-01-30 CN CNB2004800057165A patent/CN100444489C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202662A (en) * | 1978-09-07 | 1993-04-13 | Leviton Manufacturing Company, Inc. | Resettable circuit breaker for use in ground fault circuit interrupters and the like |
| CN1043392C (en) * | 1993-06-15 | 1999-05-12 | 林社振 | Earth fault circuit breaker |
| CN1069998C (en) * | 1996-08-13 | 2001-08-22 | 施耐德电器工业公司 | Electronic differential circuit breaker |
| US6246558B1 (en) * | 1998-08-24 | 2001-06-12 | Leviton Manufacturing Company | Circuit interrupting device with reverse wiring protection |
| US6437700B1 (en) * | 2000-10-16 | 2002-08-20 | Leviton Manufacturing Co., Inc. | Ground fault circuit interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1757147A (en) | 2006-04-05 |
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