CN205004295U - Circuit protection device - Google Patents
Circuit protection device Download PDFInfo
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- CN205004295U CN205004295U CN201520762920.7U CN201520762920U CN205004295U CN 205004295 U CN205004295 U CN 205004295U CN 201520762920 U CN201520762920 U CN 201520762920U CN 205004295 U CN205004295 U CN 205004295U
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Abstract
The utility model discloses a circuit protection device, circuit protection device contains baffle, circuit board, alternating current power supply passageway, synchronous translation unit, synchro control switch, dropout and reset operation mechanism, earth fault detects drive unit and test and reset switch, realizes the synchronous switch -on of earth fault protection and alternating current power supply passageway or divides disconnected function. Have artifical machinery and thread off and artifical electric reset function, guarantee the trouble at circuit protection device generating circuit, or the load circuit is when breaking down, can be by the alternating current power supply of artifical force disconnect towards the load circuit, ensure the electrification at circuit protection device, or break down at circuit protection device, or work as alternating current power supply and received the load end period of the day from 11 p. M. To 1 a. M by reverse, prevent that circuit protection device from being resetd, implement the test to circuit protection device's circuit protect function simultaneously at reset process simultaneously. And when inserting alternating current power supply from the load terminal is reverse, can guarantee that the socket terminal is not electrified.
Description
Technical field
The utility model belongs to circuit protection technical field, particularly relates to a kind of circuit protection device simultaneously with the aftercurrent action protecting of face terminals and socket output.
Background technology
Aftercurrent action protecting equipment; or ground fault circuit protective device; for detecting the earth fault current occurred in the electrical appliance such as electrical equipment, instrument, device, equipment, electrical system and supply line of being powered by electric network source; when this earth fault current exceedes the limit value of regulation; above-mentioned protective device by automatic cut-off power, thus reaches the object of protection personal safety and safety of property.In actual use, the ground fault detection circuit of aftercurrent action protecting equipment or ground fault circuit protective device usually can locally or all lose efficacy, and cause defencive function to lose efficacy, and now user does not know, and there is potential safety hazard.In actual use; to the circuit protection device simultaneously with load outputs and socket output; when because of false wiring; when AC power being accessed from face terminals by mistake; female terminal is caused directly to be connected with face terminals and to lose defencive function; and now user does not know, there is potential safety hazard.
In order to solve the problem, some circuit protection devices, are provided with manual testing's button and manual reset button, and can manual testing's button adopt electric means test protective device normally work, and reset button adopts mechanical system to implement to reset to protective device.But when protective device breaks down and loses protective capability, on the one hand, user cannot make the protective device being in malfunction thread off by manual method, can not cut off the AC power towards face terminals and female terminal in time; On the other hand, user can implement the protective device being in malfunction to reset, and there is potential safety hazard equally.
In order to solve the problem; some circuit protection devices; be provided with a circuit breaking apparatus and AC power is received face terminals and female terminal respectively; face terminals and female terminal are separated from each other; in case because of false wiring; AC power is accessed from face terminals by mistake, cause female terminal charged.But above-mentioned design organizes contact because arranging in same actuating mechanism more, many group contact laod unbalances usually can be caused; In addition, at some laboratory situations, many groups instrument and equipment is connected on face terminals and female terminal respectively, adopt above-mentioned many group contact supply power modes, when wherein one or more contacts are bad or disconnect, by the synchronism of impact power supply, and now user does not know, and causes electric power system performance to reduce.
Summary of the invention
The utility model is the extension of CN101295609B patent, and the content described in CN101295609B patent will be incorporated in this patent.A technical problem to be solved in the utility model is to provide the circuit protection device that a kind of artificial mechanism mode is threaded off; when circuit protection device breaks down; adopt mechanical system to implement manually to force to thread off, cut off the AC power being sent to face terminals and female terminal.
Another technical problem to be solved in the utility model is to provide the circuit protection device that a kind of electric means resets; this electrical reset process comprises the test of the defencive function to circuit protection device; and only have when the defencive function of circuit protection device is normal; circuit protection device just can be made to reset, to prevent the circuit protection device of malfunction by erroneous resets.
Another technical problem to be solved in the utility model is for circuit protection device provides a kind of lazy-tongs; under correct wiring situation; its face terminals and female terminal are interconnected, and when occurring AC power oppositely to access from face terminals, can guarantee that female terminal is not charged.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of circuit protection device; comprise a shell be made up of upper cover and base, comprise in this shell a dividing plate, wiring board, an AC power passage, a test and reset switch, synchronous control switch, one thread off and reset operation mechanism, an Earth Fault Detection driver element and a synchronize conversion cell.
Wherein, AC power passage comprises power supply terminal, face terminals, female terminal, power main switch and synchronize changer, and power supply terminal is used for input ac power, and face terminals and female terminal are for being connected load.Power main switch is for being switched on or switched off from power supply terminal to the electrical path between face terminals and female terminal.Synchronize changer is used for female terminal to be connected to face terminals or power supply terminal.
Thread off and reset operation mechanism for control power main switch, synchronous control switch, test and reset switch disjunction or close.Dropout and reset operation mechanism comprise reset button, release link, trip push button, dropout push rod, lifter and lock catch unit.Lock catch unit comprises lock pin, latch spring, snap close armature and tripping coil.Lock pin, release link and lifter form mutual interlocking gear, and by changing the position relationship of lock pin, release link and lifter, lifting controllable device moves up and down, thus realize the controlling functions to power main switch, synchronous control switch, test and reset switch.Artificial pressing reset button, makes release link move down, and can change the position relationship of release link and lock pin and lifter.Artificial pressing trip push button, makes dropout push rod move down, and can promote lock pin and move right, and change the position relationship of lock pin and release link and lifter.
Earth Fault Detection driver element is for detecting the earth fault current in AC power passage, when this earth fault current exceedes setting current value, Earth Fault Detection driver element connects the exciting circuit of tripping coil, tripping coil is made to obtain exciting curent, thus lock pin is moved right, change the relative position relation of lock pin, lifter and release link.
Test and reset switch are used for the earth fault protection function of test circuit protective device, when testing and reset switch closes, will produce earth fault current, and trigger the work of Earth Fault Detection driver element in AC power passage.
Dividing plate is fixed between base and upper cover, for fixed socket terminal, and for the location for main power switch and lifter;
Wiring board is fixed on base, for fixing described test and reset switch, synchronous control switch and lock catch unit.
Synchronize conversion cell is fixed on lock catch unit, and for drawing synchronize changer action, it comprises a synchronous coil.Synchronize changer has two service positions: normally closed position and normally open position, and when synchronize changer is in normally closed position, female terminal is connected in face terminals; When synchronize changer is in normally open position, female terminal is connected on power supply terminal.
Synchronous control switch is for being switched on or switched off the exciting circuit of synchronous coil, and control synchronization converting unit works.When synchronous control switch closes, synchronize conversion cell adhesive can be made, thus make synchronize changer be transformed into normally open position by normally closed position; And when synchronous control switch disjunction, make synchronize changer be transformed into normally closed position.
Further, described test and reset switch comprise test movable contact spring and test static contact, described synchronous control switch comprises Synchronization Control movable contact spring and Synchronization Control static contact, described power main switch comprises a pair power supply movable contact spring, a pair load static contact, a pair socket static contact, described power supply movable contact spring is installed in the upper surface of lifter, described load static contact and socket static contact are located at the lower surface of dividing plate, described power supply movable contact spring is connected with power supply terminal, described load static contact is fixed in face terminals, described socket static contact is fixed on female terminal, described lifter comprise one test projection and one synchronously lift arm, described test projection is positioned at the top of test movable contact spring, described synchronous act arm is positioned at the below of Synchronization Control movable contact spring, described lifter moves in the vertical direction and makes described power main switch, described test and reset switch and described synchronous control switch close or disconnect, this lifter moves in the vertical direction from top to bottom through reset position, trip positions and test position, when lifter is positioned at reset position, power main switch closes, when lifter leaves reset position, power main switch disjunction, when lifter is positioned at test position, test and reset switch close, when lifter leaves test position, and test and reset switch disjunction, when lifter is positioned at test position, or be positioned at trip positions, or time between test position and trip positions, synchronous control switch closes, move to reset position when lifter leaves trip positions, and before it arrives reset position, synchronous control switch disjunction.
The utility model has been set up one and has synchronously been lifted arm on lifter, when lifter moves up and down, moves the closed or disjunction of synchronous control switch by synchronously lifting arm straps.
Further, described lock pin has a lock pin swash plate, a lockhole and a lock pin hook, this lock pin horizontally passes through lifter, lock pin swash plate stretches out from the left wall of lifter, lockhole is positioned at lifter, lock pin hook is positioned at the right side of lifter, and this lock pin can move left and right in the horizontal direction, again can be lower mobile in the vertical direction together with lifter.
Further, described release link has a upper arm, reset hook and a underarm, release link can be lower mobile in the vertical direction, can swing around the tie point of release link and reset button again, this release link is vertically inserted in described lifter, inserts in described lockhole subsequently, described lock pin and lifter and release link have three kinds of interlocking states, one is low level lock-out state, and lock pin pushes away the underarm of release link left, and stops that this release link vertically moves down; Two is high-order lock-out states, and lock pin pushes away the upper arm of release link left, and make reset hook swing and hook the bottom of lifter left, lifter stops that release link moves up; Three is unlocking conditions, and lock pin moves right, and release link is separated with lifter with lock pin.
By controlling relative position between lock pin, release link and lifter, to determine the relative motion relation of lifter and release link, thus control lifter moves up and down, the reset of realizing circuit protective device, dropout or synchronization control function.Wherein, lifter is lower mobile in the vertical direction under the effect of the movable contact spring of release link, dropout spring, test and reset switch.Lock pin horizontally passes through lifter, a lock pin swash plate of lock pin left part stretches out from the left wall of lifter, a lockhole in the middle part of lock pin is positioned at lifter, a lock pin hook of lock pin right part is positioned at the right side of lifter, move left and right in the horizontal direction under the elastic force effect of the magnetic force that lock pin can produce at tripping coil and latch spring, can move in the vertical direction together with lifter again.Release link, vertically from the top down through a back-moving spring, then through dividing plate, then through a dropout spring, is inserted in lifter, is finally inserted in the lockhole of lock pin.The upper end of back-moving spring is pressed in the bottom of reset button, and the lower end of back-moving spring is pressed on dividing plate, and the upper end of dropout spring is pressed in the bottom of dividing plate, and the lower end of dropout spring is pressed on lifter.Release link can be lower mobile in the vertical direction, can swing again: back-moving spring can make release link move up around the tie point of release link and reset button, and artificial pressing reset button can make release link move down; Lock pin moves left and right push-and-pull release link and swings.
Lifter moves in the vertical direction from top to bottom through reset position, trip positions and test position.When lock pin moves right, be unlocking condition, release link is separated with lock pin with lifter, lifter dropout spring or test and reset switch movable contact spring elastic force effect under get back to trip positions.When lock pin is moved to the left, according to the relative position between release link and lock pin, lock pin has two kinds of lock-out states: low level lock-out state and high-order lock-out state.Low level lock-out state: when reset hook is positioned on lock pin, lock pin push away left release link underarm and block reset hook vertically move down, now, artificial pressing reset button, push away release link downwards, lifter will be made to follow release link move down, until lifter arrives at test position.High-order lock-out state: when reset hook is positioned under lock pin, lock pin pushes away the upper arm of release link left, release link is swung left, reset and hook the bottom of lifter, lifter blocks release link and moves up, under the effect of back-moving spring, release link is power elevation device upwards, until lifter reaches reset position.Period, when lifter is positioned at reset position, power main switch closes; When lifter leaves reset position, power main switch disjunction.When lifter is positioned at test position, test and reset switch close; When lifter leaves test position, test and reset switch disjunction.When lifter (comprises test position and trip positions) between test position to trip positions, synchronous control switch closes; Move to reset position when lifter leaves trip positions, and before lifter reaches reset position, synchronous control switch disjunction.
Circuit protection device of the present utility model adopts electric means to reset, and implements the test to the defencive function of circuit protection device at reseting procedure.Period, lifter experience drops to test position from trip positions, then rises to trip positions from test position, is finally risen to the process of reset position by trip positions.Its reseting procedure is: at trip status, lock pin is in low level lock-out state and stops that release link vertically moves down, lifter is moved downward to test position under the promotion of release link, the test projection push to test of the bottom of lifter and the movable contact spring of reset switch and static contact close, test and reset switch are closed, start the test to the defencive function of circuit protection device, now, when the defencive function of circuit protection device is normal, tripping coil obtains enough large exciting curent, under the effect of the magnetic force produced at tripping coil, snap close armature moves right and moves lock pin to unlocking condition to the right, release link is separated with lifter, lifter test and reset switch movable contact spring elastic force effect under upwards move on to trip positions, now test and reset switch disjunction, exciting curent in tripping coil disappears, under the effect of the elastic force of latch spring, snap close armature is moved to the left and pushes away lock pin left, lock pin pushes away the upper arm of release link left, reset is made to hook the bottom of lifter, namely high-order locking is realized, now, under the effect of the elastic force of back-moving spring, resetting means moved to by the lifter bar that is reset, thus power main switch is closed, complete reseting procedure.Said process; the power end of circuit protection device must connect AC power; and; the defencive function circuit of circuit protection device must be able to normally work; circuit protection device could successfully be resetted, otherwise, when circuit protection device is not charged or there is fault; or AC power is when being reversed access from face terminals, circuit protection device cannot be reset.
Circuit protection device of the present utility model adopts artificial mechanism mode to thread off.The lower end of described dropout push rod is a dropout skewback, when artificial pressing described trip push button promotion dropout skewback moves down, the inclined-plane of this dropout skewback and the inclined-plane of described lock pin swash plate contact with each other and relative sliding, dropout skewback promotes lock pin and moves right, realize mechanical trip, to cut off the AC power transporting to face terminals and female terminal.Realize artificial mechanism under this circuit protection device even can exist fault at no power situation at this circuit protection device to force to thread off.Its process is: when circuit protection device is in reset position, lifter is in reset position, and lock pin and release link are in high-order lock-out state, and the inclined-plane of lock pin swash plate is near the inclined-plane of dropout skewback.Now; artificial pressing trip push button; and promote dropout push rod and move down; the inclined-plane of dropout skewback and the inclined-plane of lock pin swash plate contact with each other and relative sliding; dropout skewback promotes lock pin swash plate and moves right, and makes lock pin move on to unlocking condition, thus lifter is separated with release link; lifter gets back to trip positions under the effect of dropout spring, the mechanical trip of realizing circuit protective device.Said process is simple mechanical process, therefore, when circuit protection device be not energized even circuit for generating fault time, still can to circuit protection device implement force thread off.
Further, described synchronize conversion cell comprises a synchronous armature, synchronous push pedal, a synchronisation spring and a synchronous coil, described synchronize changer comprises a pair synchronous movable contact spring, a pair synchronous normally closed static contact and synchronously often opens static contact a pair, described synchronous movable contact spring is fixed in synchronous push pedal, described synchronous normally closed static contact, synchronously often open static contact and be fixed on the shell of synchronize conversion cell, described synchronous movable contact spring is often opened between static contact with synchronous at synchronous normally closed static contact.
Described synchronous control switch is for switching on or off the exciting circuit of described synchronous coil, and make synchronize conversion cell action, thus described synchronize changer is switched between normally open and normally off, when synchronous coil no power, synchronize changer is in normally off; When synchronous coil obtains enough large exciting curent, synchronize changer is transformed into normally open by normally off.Particularly, the exciting circuit of synchronous coil is connected in face terminals, and synchronous control switch is serially connected in this exciting circuit.When synchronous control switch disjunction, synchronous coil does not work, and synchronize changer is in normally closed position, and now synchronous movable contact spring closes with synchronous normally closed static contact; When synchronous control switch closes, and when face terminals being connected AC power, synchronous coil obtains enough large exciting curent, synchronize conversion cell adhesive, synchronize changer forwards normally open position to by normally closed position, and now synchronous movable contact spring closes with synchronous static contact of often opening.
Further, the movable contact spring of synchronize changer is connected with female terminal, and the normally closed static contact of synchronize changer is connected with face terminals, and the static contact of often opening of synchronize changer is connected with power supply terminal.When synchronize changer is in normally closed position, synchronous movable contact spring closes with synchronous normally closed static contact, thus makes female terminal and face terminals become pair of conductors, and power supply terminal is another pair of conductors.When synchronize changer is in normally open position, synchronous movable contact spring closes with synchronous static contact of often opening, thus makes female terminal and power supply terminal end become pair of conductors, and face terminals is another pair of conductors.
Further, the exciting circuit of described synchronous coil is connected in described face terminals, when AC power be reversed receive face terminals time, synchronize changer is transformed into normally open position, cuts off the electrical path of face terminals and female terminal, thus guarantees that female terminal is not charged.When AC power is connected to power supply terminal according to normal wiring, at trip status, synchronize changer is in normally closed position; When circuit protection device is changed to reset position by trip positions; at reseting procedure; lifter leaves reset position and moves up; before lifter reaches reset position; synchronous act arm makes synchronous control switch disjunction; thus ensure that synchronize changer remains on normally closed position, face terminals and female terminal are synchronously connected on power supply terminal.
The beneficial effects of the utility model implement artificial mechanism dropout, artificial electrical reset to circuit protection device, realizes even implementing mechanical forced dropout to the circuit protection device that there is fault to not charged; When circuit protection device no power or there is fault, or AC power be reversed receive face terminals time, guarantee that circuit protection device can not be reset, improve the protection abilities of circuit protection device.Meanwhile, synchronize changer realizes the power supply synchronization of face terminals and female terminal, improves current carrying capacity and the reliability of circuit protection device.
Accompanying drawing explanation
Fig. 1 is a kind of outline drawing of the utility model embodiment;
Fig. 2 is the principle schematic of the utility model embodiment;
Fig. 3 is the component distribution figure of the utility model embodiment;
Fig. 4 is the trip status figure of the utility model embodiment;
Fig. 5 a to Fig. 5 f is the locking machine composition of the utility model embodiment;
Fig. 6 is the synchronous Change-over knot composition of reverse wiring of the utility model embodiment.
Embodiment
Be described in further details technical solutions of the utility model below in conjunction with drawings and Examples, following examples are not formed restriction of the present utility model.
Fig. 1 is the outline drawing of the utility model embodiment.It shows a kind of circuit protection device; it has a shell; this shell is made up of a base 14 and a upper cover 10, and upper cover 10 is provided with a set of female terminal 20 (comprising three pins 20A, 20B and 20C), a reset button 25 and a trip push button 32.In the left rear side of base 14 and front left side, pair of power source terminals 42 (comprising two pin 42A and 42B) is installed, in the right lateral side of base 14 and forward right side, a pair face terminals 48 (comprising two pin 48A and 48B) is installed.A ground strip 16 is installed between upper cover 10 and base 14, this ground strip 16 arranges an earthing screw 16B, for connecting ground protection wire.The pin 20C of female terminal 20 is connected with ground strip 16.Pin 20A with 20B of female terminal 20 is for being connected phase line and the neutral line of load.Pin 42A with 42B of power supply terminal 42 is for being connected phase line and the neutral line of AC power.Pin 48A with 48B of face terminals 48 is for being connected phase line and the neutral line of load.Upper cover 10 arranges two indicator light window 86A and 86B, for display circuit state.At four angles of base, four screw 22B are set, for permanent circuit protective device.
Fig. 2 is the principle schematic of the utility model embodiment, and it shows the control planning of each functional unit of circuit protection device.This circuit protection device comprises AC power passage 502, dropout and reset operation mechanism 515, Earth Fault Detection driver element 509, synchronize conversion cell 501, test and reset switch 92 and synchronous control switch 500.
Wherein, AC power passage 502 comprises power supply terminal 42, face terminals 48, female terminal 20, power main switch 221 and synchronize changer 514.The phase line of AC power and the neutral line are access in from power supply terminal 42, are connected to face terminals 48 and female terminal 20 after power main switch 221.Power main switch 221 for connect or disjunction from the electrical path between power supply terminal 42 to face terminals 48 and female terminal 20.Synchronize changer 514 is for being connected to face terminals 48 or power supply terminal 42 by female terminal 20.Synchronize changer 514 has two service positions: normally closed position and normally open position.When synchronize changer 514 is in normally closed position, female terminal 20 is connected in face terminals 48, and when synchronize changer 514 is in normally open position, female terminal 20 is connected on power supply terminal 42.
Dropout and reset operation mechanism 515 comprise lock catch unit 90, lifter 68, release link 26, dropout push rod 34, trip push button 32 and reset button 25.Lock catch unit 90 comprises lock pin 72, snap close armature 78, tapered end spring 80 and a tripping coil 76.By changing the relative position of lock pin 72, lifter 68 and release link 26, move up and down to control lifter 68, and drive power main switch 221, test and reset switch 92, synchronous control switch 500 disjunction or close.Artificial pressing reset button 25 can make release link 26 move down.Artificial pressing trip push button 32, makes dropout push rod 34 move down, and changes the position of lock pin 72.
Earth Fault Detection driver element 509 is for detecting the earth fault current existed in AC power passage 502, when this earth fault current exceedes setting current value, Earth Fault Detection driver element 509 connects the exciting circuit of tripping coil 76, tripping coil 76 is made to obtain exciting curent, under the effect of the magnetic force produced at tripping coil 76, snap close armature 78 draws lock pin 72 and moves right, and changes the relative position of lock pin 72, lifter 68 and release link 26.
Test and reset switch 92, for the earth fault protection function of test circuit protective device, when test and reset switch 92 close, will produce earth fault current in AC power passage 502, and trigger Earth Fault Detection driver element 509 and work.
Synchronize conversion cell 501 comprises a synchronous coil 511.Synchronous control switch 500 is for being switched on or switched off the exciting circuit of synchronous coil 511.When synchronous control switch 500 closes, synchronize conversion cell 501 adhesive can be made, thus make synchronize changer 514 be transformed into normally open position by normally closed position.And when synchronous control switch 500 disjunction, make synchronize changer 514 be transformed into normally closed position.
Fig. 3 is the component distribution figure of the utility model embodiment, shows critical piece and the position relationship thereof of circuit protection device.Dividing plate 3, wiring board 84, test and reset switch 92 (comprising test movable contact spring 92A and test static contact 92B), synchronous control switch 500 (comprising Synchronization Control movable contact spring 500A and Synchronization Control static contact 500B), lifter 68, lock catch unit 90 and synchronize conversion cell 501 is had in the shell described in Fig. 1.
Wherein, dividing plate 3 is fixed between base 14 and upper cover 10, wiring board 84 is fixed on base 14, test and reset switch 92 are fixed on the central region of wiring board 84, synchronous control switch 500 is fixed on the right front region of wiring board 84, and lifter 68 is placed between wiring board 84 and dividing plate 3.Lock catch unit 90 is fixed on the right side area of wiring board 84, and synchronize conversion cell 501 is fixed on lock catch unit 90.Each parts of described Earth Fault Detection driver element 509 are soldered or be fixed on wiring board 84.
Fig. 4 is the trip status figure of the utility model embodiment, shows parts and the relative position of each switch in circuit protection device.Wherein, power main switch 221 comprises a pair power supply movable contact spring 62A and 62B, a pair load static contact 64A and 64B, a pair socket static contact 38A and 38B.Power supply movable contact spring 62A, 62B are installed in the upper surface of lifter 68, and load static contact 64A, 64B and socket static contact 38A, 38B are located at the lower surface of dividing plate 3.Power supply movable contact spring 62A, 62B are connected with power supply terminal 42A, 42B, and load static contact 64A, 64B are fixed on face terminals 48A, 48B, and socket static contact 38A, 38B are fixed on female terminal 20A, 20B.
Lifter 68 comprises test projection 68A and synchronous act arm 68B, and test projection 68A is positioned at the top of test movable contact spring 92A, and synchronous act arm 68B is positioned at the below of Synchronization Control movable contact spring 500A.Lifter 68 moves up and down along with the direction of plane orthogonal residing for wiring board 84, drive the movable contact spring of power main switch 221, test and the movable contact spring of reset switch 92, the movable contact spring of synchronous control switch 500 to move up and down, thus power main switch 221, test and reset switch 92, synchronous control switch 500 are closed or disjunction.
Fig. 5 a to Fig. 5 f is the locking machine composition of the utility model embodiment, shows the interlocked relationship of the release link 26 of circuit protection device, lifter 68 and lock catch unit 90.Lock catch unit 90 comprises a lock pin 72, snap close armature 78, tripping coil 76 and a latch spring 80.The left part of lock pin 72 is a lock pin swash plate 72A, has a lockhole 72B in the middle part of it, and its right part is a lock pin hook 72C.Lock pin hook 72C is connected with snap close armature 78, and lock pin 72 is followed snap close armature 78 and moved left and right in the horizontal direction.When inputting enough large exciting curent to tripping coil 76, moving right under the effect of the magnetic force that snap close armature 78 produces at tripping coil 76, and lock pin 72 being moved to right side; When tripping coil 76 is not energized, under the effect of the elastic force of latch spring 80, lock pin 72 is shifted onto left side by snap close armature 78.The exciting circuit of tripping coil 76 is connected on power supply terminal 42A and 42B.Lock pin 72 horizontally passes through lifter 68, and lock pin swash plate 72A is positioned at the left side of lifter 68, and lockhole 72B is positioned at lifter 68, and lock pin hook 72C is positioned at the right side of lifter 68, and lock pin 72 moves in the vertical direction together with lifter 68.
Release link 26 is vertically divided into upper arm 26A from top to bottom, reset hook 26B and underarm 26C.Release link 26, vertically from the top down through a back-moving spring 28, then through dividing plate 3, then through a dropout spring 30, is inserted in lifter 68, is finally inserted in lockhole 72B.The upper end of back-moving spring 28 is pressed in the bottom of reset button 25, and the lower end of back-moving spring 28 is pressed on dividing plate 3, and the upper end of dropout spring 30 is pressed in the bottom of dividing plate 3, and the lower end of dropout spring 30 is pressed on lifter 68.Release link 26 can be lower mobile in the vertical direction, can swing again around the tie point of release link 26 with reset button 25.
Lifter 68 moves in the vertical direction three positions from top to bottom: reset position (see Fig. 5 e), trip positions (see Fig. 5 b) and test position (see Fig. 5 c).When lifter 68 is positioned at reset position, power main switch 221 closes; When lifter 68 leaves reset position, power main switch 221 disjunction.When lifter 68 is positioned at test position, test and reset switch 92 close, when lifter 68 leaves test position, and test and reset switch 92 disjunction.When lifter 68 (comprises test position and trip positions) between test position and trip positions, synchronous control switch 500 closes; Move to reset position when lifter 68 leaves trip positions, and before lifter 68 arrives reset position, synchronous control switch 500 disjunction.
By changing the relative position of lock pin 72 and release link 26 and lifter 68, to realize lock function.When lock pin 72 moves right, be unlocking condition, lock pin 72 is separated with release link 26 with lifter 68, and lifter 68 gets back to trip positions under the effect of dropout spring 30, test movable contact spring 92A.When lock pin 72 is moved to the left, according to the relative position of lock pin 72 with release link 26, lock pin 72 has two kinds of lock-out states: low level lock-out state and high-order lock-out state.Low level lock-out state: when reset hook 26B is positioned on lock pin 72, lock pin 72 push away left release link 26 underarm 26C and block reset hook 26B vertically move down (see Fig. 5 b), now, artificial pressing reset button 25 pushes away release link 26 downwards, lock pin 72 and lifter 68 will be made to follow release link 26 move down, until lifter 68 arrives at test position (see Fig. 5 c).High-order lock-out state: when reset hook 26B is positioned at (see Fig. 5 d) under lock pin 72, lock pin 72 pushes away the upper arm 26A of release link 26 left, release link 26 is swung left, the hook 26B that resets hooks the bottom of lifter 68, under the effect of back-moving spring 28, release link 26 is power elevation device 68 and lock pin 72 upwards, until lifter 68 reaches reset position (see Fig. 5 e).
Circuit protection device adopts electric means to reset, and implements the test to the defencive function of circuit protection device at reseting procedure.Period, lifter 68 experiences and drops to test position from trip positions, then rises to trip positions from test position, finally rises to reset position by trip positions.Period, the power supply terminal 42 of circuit protection device must connect AC power, and the protective circuit function of circuit protection device must be normal, just can complete reseting procedure.Its reseting procedure is: at trip status, lock pin 72 is in low level lock-out state and stops that release link 26 vertically moves down (see Fig. 5 b), lifter 68 is moved downward to test position under the promotion of release link 26, test projection 68A push to test movable contact spring 92A closes with test static contact 92B, make test and reset switch 92 closed (see Fig. 5 c), now, circuit protection device starts the test of the defencive function to circuit protection device immediately, when the defencive function of circuit protection device is normal, tripping coil 76 obtains enough large exciting curent, under the effect of the magnetic force produced at tripping coil 76, snap close armature 78 moves lock pin 72 to unlocking condition to the right, release link 26 is separated with lifter 68, lifter 68 moves up and gets back to trip positions under the effect of the elastic force of test movable contact spring 92A, now, test and reset switch 92 disjunction (see Fig. 5 d), exciting curent in tripping coil 76 disappears, under the effect of the elastic force of latch spring 80, snap close armature 78 pushes away lock pin 72 left, lock pin 72 pushes away the upper arm 26A of release link 26 left, reset hook 26B is made to hook the bottom of lifter 68, lock pin 72 and release link 26, lifter 68 enters high-order lock-out state, now, under the effect of the elastic force of back-moving spring 28, release link 26 is drawn lifter 68 and is risen to reset position (see Fig. 5 e), thus power main switch 221 is closed, complete reseting procedure.
Fig. 5 e, Fig. 5 f and Fig. 5 b show the enforcement principle of the mechanical trip function of circuit protection device.Be provided with a dropout push rod 34 in the below of trip push button 32, the bottom of this dropout push rod 34 is a dropout skewback 34A.The inclined-plane of this dropout skewback 34A is positioned at the top of lock pin swash plate 72A.When circuit protection device is in reset position, lifter 68 is at reset position, and lock pin 72 is in high-order lock-out state, and the inclined-plane of lock pin swash plate 72A is near the inclined-plane (see Fig. 5 e) of dropout skewback 34A.When artificial pressing trip push button 32, when promotion dropout push rod 34 moves down, the inclined-plane of dropout skewback 34A and the inclined-plane of lock pin swash plate 72A contact with each other and relative sliding, dropout skewback 34A promotes lock pin swash plate 72A and moves right, lock pin 72 is made to move on to unlocking condition, thus lifter 68 is separated with release link 26 (see Fig. 5 f), now, lifter 68 gets back to trip positions under the effect of the elastic force of dropout spring 30, left side latched position got back to by lock pin 72 under the effect of the elastic force of latch spring 80, the mechanical trip function (see Fig. 5 b) of realizing circuit protective device.Said process is simple mechanical process, therefore, when circuit protection device be not energized even circuit for generating fault time, still can to circuit protection device implement force thread off, to cut off the AC power transporting to face terminals 48 and female terminal 20.
Fig. 6 is the synchronous Change-over knot composition of reverse wiring of the utility model embodiment, show circuit protection device AC power be reversed be connected on face terminals 48 time, its synchronous control switch 500 control synchronization change over switch 514 cuts off the electrical path of AC power.Synchronize conversion cell 501 comprises a synchronous armature 513, synchronous push pedal, 106, synchronisation spring 512 and a synchronous coil 511.Synchronize changer 514 comprises a pair synchronous movable contact spring 516A and 516B, a pair synchronous normally closed static contact 517A and 517B, synchronously often opens static contact 518A and 518B a pair.Synchronous movable contact spring 516A and 516B is fixed in synchronous push pedal 106, synchronous normally closed static contact 517A and 517B, synchronously often opens static contact 518A and 518B and is fixed on the shell of synchronize conversion cell 501.Synchronous movable contact spring 516A and 516B often opens between static contact 518A and 518B with synchronous at synchronous normally closed static contact 517A and 517B.By release or the adhesive of control synchronization converting unit 501, synchronize changer 514 is made to be in normally closed position (now synchronous movable contact spring closes with synchronous normally closed static contact), or normally open position (now synchronous movable contact spring closes with synchronous static contact of often opening).
Synchronous control switch 500 is for the State Transferring of control synchronization converting unit 501.Synchronous control switch 500 is serially connected in the exciting circuit of synchronous coil 511, and when synchronous control switch 500 disjunction, synchronous coil 511 does not work, and synchronize conversion cell 501 discharges, and synchronize changer 514 is in normally closed position; When synchronous control switch 500 closes, and when face terminals 48 connects AC power, synchronous coil 511 obtains exciting curent, under the effect of the magnetic force produced at synchronous coil 511, synchronous armature 513 draws synchronous push pedal 106 and moves right, thus making synchronize conversion cell 501 adhesive, synchronize changer 514 is switched to normally open position by normally closed position.
Synchronous movable contact spring 516A with 516B is connected with female terminal 20, and synchronous normally closed static contact 517A with 517B is connected with face terminals 48, synchronously often opens static contact 518A with 518B and is connected with power supply terminal 42.When synchronize changer 514 is in normally closed position, synchronous movable contact spring 516A, 516B are closed with synchronous normally closed static contact 517A, 517B, thus make female terminal 20 and face terminals 48 become pair of conductors, and power supply terminal 42 is another pair of conductors.When synchronize changer 514 is in normally open position, synchronous movable contact spring 516A, 516B close with synchronous static contact 518A, 518B of often opening, and female terminal 20 and power supply terminal 42 are pair of conductors, and face terminals 48 is another pair of conductors.
As mentioned above, at trip status, synchronous control switch 500 closes, when AC power be reversed receive face terminals 48 time, synchronize changer 514 is switched to normally open position, thus guarantees that female terminal 20 is not charged.
Get back to Fig. 5 b, Fig. 5 d and Fig. 5 e, under AC power is connected to the situation of power supply terminal 42 according to normal wiring, when circuit protection device is in trip status (see Fig. 5 b, or Fig. 5 d), synchronize changer 514 is in normally closed position; When circuit protection device is changed to reset position by trip positions; at reseting procedure; lifter 68 leaves reset position and moves up; before lifter 68 reaches reset position; synchronous act arm 68B makes synchronous control switch 500 disjunction (see Fig. 5 e); thus ensure that synchronize changer 514 remains on normally closed position, make face terminals 48 and female terminal 20 remain on connected state.
Known to those skilled in the art, drawings and Examples of the present utility model are only and function of the present utility model, structure and principle are described and should become the restriction in the utility model understanding; Meanwhile, the purpose of this utility model all realizes.Above-described embodiment may be had some change when not departing from the utility model principle, so protection of the present utility model should be as the criterion with the scope described in claims.
Claims (10)
1. a circuit protection device; comprise a shell be made up of base (14) and upper cover (10); it is characterized in that; described circuit protection device also comprises dividing plate (3), wiring board (84), AC power passage (502), synchronize conversion cell (501), synchronous control switch (500), dropout and reset operation mechanism (515), Earth Fault Detection driver element (509) and test and reset switch (92), wherein:
AC power passage (502), comprise power supply terminal (42), face terminals (48), female terminal (20), a power main switch (221) and a synchronize changer (514), wherein, power supply terminal (42) is for input ac power, face terminals (48) and female terminal (20) are for being connected load, power main switch (221) is for being switched on or switched off from power supply terminal (42) to the electrical path between face terminals (48) and female terminal (20), synchronize changer (514) is for being connected to face terminals (48) or power supply terminal (42) by female terminal (20),
Thread off and reset operation mechanism (515), comprise reset button (25), release link (26), trip push button (32), dropout push rod (34), lifter (68) and lock catch unit (90), wherein, lifter (68) is fixed between dividing plate (3) and wiring board (84), lock catch unit (90) comprises a lock pin (72) and a tripping coil (76), by changing lock pin (72), relative position between release link (26) and lifter (68), lifting controllable device (68) moves up and down, and make power main switch (211), synchronous control switch (500) and test and reset switch (92) close or disjunction,
Earth Fault Detection driver element (509), layout is on described wiring board (84), for detecting the earth fault current in AC power passage (502), and drive tripping coil (76) to work, change lock pin (72) and the relative position between release link (26) and lifter (68);
Test and reset switch (92), for the earth fault protection function of test circuit protective device, when testing and reset switch (92) is closed, earth fault current will be produced in AC power passage (502), and trigger Earth Fault Detection drive circuit (509) work;
Dividing plate (3) is fixed between base (14) and upper cover (10), for fixed socket terminal (20), and for the location for main power switch (221) and lifter (68);
Wiring board (84) is fixed on base (14), for fixing described test and reset switch (92), synchronous control switch (500) and lock catch unit (90);
Synchronous control switch (500), works for control synchronization converting unit (501);
Synchronize conversion cell (501) is fixed on lock catch unit (90), for drawing synchronize changer (514) action.
2. circuit protection device as claimed in claim 1, it is characterized in that: described test and reset switch (92) comprise test movable contact spring (92A) and test static contact (92B), described synchronous control switch (500) comprises Synchronization Control movable contact spring (500A) and Synchronization Control static contact (500B), and described power main switch (221) comprises a pair power supply movable contact spring (62A, 62B), a pair load static contact (64A, 64B), a pair socket static contact (38A, 38B), described power supply movable contact spring (62A, 62B) be installed in the upper surface of lifter (68), described load static contact (64A, 64B) with socket static contact (38A, 38B) be located at the lower surface of dividing plate (3), described power supply movable contact spring (62A, 62B) with power supply terminal (42A, 42B) connect, described load static contact (64A, 64B) be fixed on face terminals (48A, 48B), described socket static contact (38A, 38B) be fixed on female terminal (20A, on 20B), described lifter (68) comprise one test projection (68A) and one synchronously lift arm (68B), described test projection (68A) is positioned at the top of test movable contact spring (92A), and described synchronous act arm (68B) is positioned at the below of Synchronization Control movable contact spring (500A), described lifter (68) moves in the vertical direction and makes described power main switch (221), described test and reset switch (92) and described synchronous control switch (500) close or disconnect, this lifter (68) moves in the vertical direction from top to bottom through reset position, trip positions and test position, when lifter (68) is positioned at reset position, power main switch (221) closes, when lifter (68) leaves reset position, power main switch (221) disjunction, when lifter (68) is positioned at test position, test and reset switch (92) close, when lifter (68) leaves test position, and test and reset switch (92) disjunction, when lifter (68) is positioned at test position, or be positioned at trip positions, or time between test position and trip positions, synchronous control switch (500) closes, move to reset position when lifter (68) leaves trip positions, and before it arrives reset position, synchronous control switch (500) disjunction.
3. circuit protection device as claimed in claim 2, it is characterized in that: described lock pin (72) has a lock pin swash plate (72A), a lockhole (72B) and lock pin hook (72C), this lock pin (72) horizontally passes through lifter (68), lock pin swash plate (72A) stretches out from the left wall of lifter (68), lockhole (72B) is positioned at lifter (68), lock pin hook (72C) is positioned at the right side of lifter (68), this lock pin (72) can move left and right in the horizontal direction, again can be lower mobile in the vertical direction together with lifter (68).
4. circuit protection device as claimed in claim 3, it is characterized in that: described release link (26) has a upper arm (26A), reset hook (26B) and a underarm (26C), release link (26) can be lower mobile in the vertical direction, can swing around the tie point of release link (26) with described reset button (25) again, this release link (26) is vertically inserted in described lifter (68), insert in described lockhole (72B) subsequently, described lock pin (72) and lifter (68) have three kinds of interlocking states with release link (26), one is low level lock-out state, lock pin (72) pushes away the underarm (26C) of release link (26) left, and stop that this release link (26) vertically moves down, two is high-order lock-out states, lock pin (72) pushes away the upper arm (26A) of release link (26) left, make reset link up with (26B) swing left and hook the bottom of lifter (68), lifter (68) stops that release link (26) moves up, three is unlocking conditions, and lock pin (72) moves right, and release link (26) is separated with lifter (68) with lock pin (72).
5. circuit protection device as claimed in claim 4; it is characterized in that: this circuit protection device adopts electric means to reset; at reseting procedure; described lifter (68) promotes described test and reset switch (92) closes; start the test process to the defencive function of circuit protection device; and; when described power supply terminal (42) does not connect AC power; or be connected in described face terminals (48) when AC power is reversed; or when the defencive function circuit malfunction of circuit protection device, this circuit protection device cannot be reset.
6. circuit protection device as claimed in claim 4, it is characterized in that: the lower end of described dropout push rod (34) is a dropout skewback (34A), when the described trip push button of artificial pressing (32) promotion dropout skewback (34A) moves down, the inclined-plane of this dropout skewback (34A) and the inclined-plane of described lock pin swash plate (72A) contact with each other and relative sliding, dropout skewback (34A) promotes lock pin (72) and moves right, realize mechanical trip, realize artificial mechanism under this circuit protection device even can exist fault at no power situation at this circuit protection device to force to thread off.
7. circuit protection device as claimed in claim 2, it is characterized in that: described synchronize conversion cell (501) comprises a synchronous armature (513), a synchronous push pedal (106), a synchronisation spring (512) and a synchronous coil (511), described synchronize changer (514) comprises a pair synchronous movable contact spring (516A, 516B), a pair synchronous normally closed static contact (517A, 517B) He a pair synchronously often opens static contact (518A and 518B), described synchronous movable contact spring (516A, 516B) be fixed in synchronous push pedal (106), described synchronous normally closed static contact (517A, 517B), synchronously often open static contact (518A, 518B) be fixed on the shell of synchronize conversion cell (501), described synchronous movable contact spring (516A, 516B) be positioned at synchronous normally closed static contact (517A, 517B) often open static contact (518A with synchronous, 518B), described synchronous control switch (500) is for switching on or off the exciting circuit of described synchronous coil (511), and make synchronize conversion cell (501) action, thus described synchronize changer (514) is switched between normally open and normally off, when synchronous coil (511) no power, synchronize changer (514) is in normally off, when synchronous coil (511) obtains enough large exciting curent, synchronize changer (514) is transformed into normally open by normally off.
8. circuit protection device as claimed in claim 7, it is characterized in that: described synchronous movable contact spring (516A, 516B) be connected with female terminal (20), described synchronous normally closed static contact (517A, 517B) be connected with face terminals (48), describedly synchronously often open static contact (518A, 518B) be connected with power supply terminal (42), when described synchronize changer (514) is in normally off, described power supply terminal (42) is pair of conductors, described female terminal (20) is connected to become another pair of conductors with described face terminals (48) respectively, when synchronize changer (514) is in normally open, female terminal (20) is connected to become pair of conductors with power supply terminal (42) respectively, and face terminals (48) is another pair of conductors.
9. circuit protection device as claimed in claim 8; it is characterized in that: the exciting circuit of described synchronous coil (511) is connected in described face terminals (48); when AC power be reversed be connected on described face terminals (48) upper time; at trip status; described synchronize changer (514) cuts off the electrical path of face terminals (48) and female terminal (20), thus guarantees that female terminal (20) is not charged.
10. circuit protection device as claimed in claim 9; it is characterized in that: when AC power is connected on power supply terminal (42) by forward; at trip status; described synchronize changer (514) is in normally off; to be reset process at this circuit protection device; described synchronous control switch (500) by described lifter (68) disjunction, thus makes synchronize changer (514) remain on normally off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520762920.7U CN205004295U (en) | 2015-09-29 | 2015-09-29 | Circuit protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520762920.7U CN205004295U (en) | 2015-09-29 | 2015-09-29 | Circuit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205004295U true CN205004295U (en) | 2016-01-27 |
Family
ID=55161173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520762920.7U Withdrawn - After Issue CN205004295U (en) | 2015-09-29 | 2015-09-29 | Circuit protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205004295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609382A (en) * | 2015-09-29 | 2016-05-25 | 嘉兴首信电气科技有限公司 | Circuit protection device |
| CN107706009A (en) * | 2017-11-14 | 2018-02-16 | 常熟市立得电器有限公司 | Wall-mounted manual operation switch |
-
2015
- 2015-09-29 CN CN201520762920.7U patent/CN205004295U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609382A (en) * | 2015-09-29 | 2016-05-25 | 嘉兴首信电气科技有限公司 | Circuit protection device |
| CN107706009A (en) * | 2017-11-14 | 2018-02-16 | 常熟市立得电器有限公司 | Wall-mounted manual operation switch |
| CN107706009B (en) * | 2017-11-14 | 2019-08-30 | 常熟市立得电器有限公司 | Wall-mounted manual operation switch |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160127 Effective date of abandoning: 20171031 |
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