CN101123157A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN101123157A CN101123157A CNA2007101408408A CN200710140840A CN101123157A CN 101123157 A CN101123157 A CN 101123157A CN A2007101408408 A CNA2007101408408 A CN A2007101408408A CN 200710140840 A CN200710140840 A CN 200710140840A CN 101123157 A CN101123157 A CN 101123157A
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- Prior art keywords
- test
- circuit
- decoupler
- casing
- separator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/056—Mounting on plugboards
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2217/00—Facilitation of operation; Human engineering
- H01H2217/046—Enhanced legend space by smaller actuators
Abstract
The The invention provides circuit breaker, which can make the breaker housing small and thin. In the circuit breaker, a tripping loop acts and a separator rises to cut off the main circuit when a leakage detection circuit on the printing substrate detects the leakage of the main circuit. A detection circuit is arranged on the printing substrate to detect the tripping action by setting a suspected leakage state occurrence. A U-shaped detection switch for turning on/off the detection circuit is configurated to be crossed with the separator. When the separator moves to the direction of the cut-off main circuit, a projection of the separator forcibly releases the connection state of the detection switch in order to cut off and forbids the connection operation of the detection switch.
Description
Technical field
The present invention relates to be arranged on for example interior circuit breaker of distribution board.
Background technology
In the past, known have when detecting the electric leakage of main circuit, and release mechanism portion moves and separator is moved in the decoupler casing, disconnects the circuit breaker of main circuit.In addition, also known have a circuit breaker with test circuit, and this test circuit is used to test release mechanism portion regular event whether when electric leakage takes place.Because test circuit is generally guaranteed power supply from the load side circuit of circuit breaker, even so connect Test Switchboard, make doubtful leakage current disconnect main circuit by test circuit, circuit breaker by the situation of reversal connection under, in test circuit, also might have doubtful leakage current to flow into.Thereby after main circuit was disconnected, if continue unguardedly to press Test Switchboard, solenoid etc. just might be burnt.
In order to eliminate this problem, the circuit breaker that is provided with limit switch on printed base plate is disclosed in patent documentation 1, this limit switch is used for when having disconnected main circuit, cuts off test circuit forcibly.In patent documentation 2, disclose following circuit breaker: the upper surface at the decoupler casing is provided with testing button, bottom at the decoupler casing is provided with printed base plate, and the test circuit on the printed base plate is connected/rupturing operation by flat spring by testing button.
Patent documentation 1: the spy opens the 2002-216612 communique
Patent documentation 2: the spy opens the 2001-118486 communique
Summary of the invention
The problem that invention will solve
But,,,, exist the gauge of decoupler casing to become big problem points so need guarantee the space at the periphery of printed base plate because limit switch is arranged on the printed base plate according to the circuit breaker of patent documentation 1.According to the circuit breaker of patent documentation 2, because be the test circuit of operating the decoupler bottom of shell by the testing button of decoupler casing upper surface, so terminal or flat spring on the printed base plate that need extend exist the decoupler casing to become big problem points.
The present invention proposes in order to address the above problem a little just, and its purpose is to provide a kind of circuit breaker that makes the miniaturization of decoupler casing, slimming.
In order to solve above-mentioned problem, circuit breaker of the present invention, when detecting the electric leakage of main circuit, release mechanism portion moves and separator is moved in the decoupler casing, disconnect main circuit, it is characterized in that, in the decoupler casing, be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit, in separator, be provided with cancel system, this cancel system is when the direction that disconnects main circuit moves, remove the on-state of Test Switchboard forcibly, it is cut off, and forbid the making operation of Test Switchboard.
According to this circuit breaker, because after separator has disconnected main circuit, the cancel system of separator makes Test Switchboard be in dissengaged positions, so can prevent trouble before it happens flowing into this state of affairs of test circuit at the disconnection after-current.In addition, because in test circuit itself, do not need to be provided with switch,, realize miniaturization, the slimming of decoupler casing so can dwindle the space of test circuit periphery.
The foregoing circuit decoupler is characterised in that to have the projection as cancel system in separator, and projection is the switching portion of the Test Switchboard contact separation from test circuit, and forbids that switching portion gets back to the contact side.
Constitute according to this, can Test Switchboard be connected/rupturing operation reliably.
The foregoing circuit decoupler is characterised in that to have the testing button of operational testing switch on the decoupler casing, and testing button and test circuit are configured in the front and back of separator, Test Switchboard is configured to moving direction with separator intersects and extend.
According to this formation, test circuit, Test Switchboard and testing button can be contained in the decoupler casing compactly.
In addition, circuit breaker of the present invention, when detecting the electric leakage of main circuit, release mechanism portion moves and separator is moved in the decoupler casing, disconnect main circuit, it is characterized in that, in the decoupler casing, be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit, on the decoupler casing, be provided with the testing button of operational testing switch, on printed base plate, form test circuit, bend to the U font and form Test Switchboard with bar-shaped elastomeric element, the cardinal extremity of Test Switchboard is fixedly attached on the side contact of test circuit, the bent intermediate portion of Test Switchboard in being supported near the testing button on the decoupler casing, being arranged to the front end of Test Switchboard can contact with the outstanding the opposing party contact that is arranged on the test circuit on the printed base plate, separate.
According to this circuit breaker, because form Test Switchboard with bar-shaped elastomeric element, thus also can adopt wire rod such as wire at bar-shaped elastomeric element, thus the space that is provided with of Test Switchboard can be dwindled, the thin and miniaturization of the formation that makes circuit breaker.
Described circuit breaker is characterised in that, front surface at the decoupler casing is provided with the load side terminal, rear surface at the decoupler casing is provided with power supply side terminal, be provided with at the upper surface of decoupler casing main circuit is connected/operating grip and the testing button of rupturing operation, dispose printed base plate and Test Switchboard in parallel to each other in the inside upper part of decoupler casing.
Constitute according to this, printed base plate and Test Switchboard can be arranged on the inside of decoupler casing in the mode of compactness.In addition, by printed base plate and Test Switchboard being configured in the inside upper part of casing, thereby can Test Switchboard be moved reliably with the operational ton seldom of testing button, and can like a cork testing button be arranged on operating grip near, help the miniaturization of decoupler casing.
And, circuit breaker of the present invention, when detecting the electric leakage of main circuit, release mechanism portion moves and separator is moved in the decoupler casing, disconnect main circuit, it is characterized in that, rear surface at the decoupler casing is provided with power supply side terminal, front surface at the decoupler casing is provided with the load side terminal, in the decoupler casing, separator is arranged to and can be moved to the direction with the front surface almost parallel of decoupler casing, and be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit, the bar-shaped elastomeric element that extends with intersecting with the moving direction of separator forms Test Switchboard, and it is disposed along the medial surface of decoupler casing.
According to this circuit breaker, printed base plate can be arranged to and power supply side terminal and load side terminal same column, make the decoupler casing realize slimming, be thinned to for example about 10mm.
Described circuit breaker is characterised in that, on printed base plate, form test circuit, dispose printed base plate abreast with the medial surface of decoupler casing, one end of Test Switchboard is fixedly attached on the side contact of test circuit, the front end of Test Switchboard is arranged to and can is contacted, separate with the outstanding the opposing party contact that is arranged on the test circuit on the printed base plate.
According to this formation, printed base plate can be arranged to and power supply side terminal and load side terminal same column, make the decoupler casing realize slimming, be thinned to for example about 10mm.
Described circuit breaker is characterised in that, be provided with at the upper surface of decoupler casing main circuit is connected/operating grip of rupturing operation, form to the side-prominent projection of Test Switchboard in the side of the upper end of separator, when separator when the direction that disconnects main circuit rises, projection is removed the on-state of Test Switchboard forcibly, it is cut off, and forbid the making operation of Test Switchboard.
Constitute according to this, have and to make the mechanism of Test Switchboard cut-out be arranged near the advantage of operating grip compactly forcibly with being used for.
The effect of invention
Decoupler in a circuit according to the invention has and test circuit and Test Switchboard and separator can be provided with relatively compactly, thereby realizes the excellent effect of the miniaturization of decoupler casing, slimming.
Description of drawings
Fig. 1 is the outward appearance perspective view of the circuit breaker of expression an embodiment of the present invention.
Fig. 2 is the perspective view that is illustrated in the internal mechanism of circuit breaker under the on-state of main circuit.
Fig. 3 is the end view that is illustrated in the internal mechanism of circuit breaker under the on-state of main circuit.
Fig. 4 is the end view that is illustrated in the inside of separator under the on-state of main circuit.
Fig. 5 is the perspective view that is illustrated in the internal mechanism of circuit breaker under the dissengaged positions of main circuit.
Fig. 6 is the end view that is illustrated in the internal mechanism of circuit breaker under the dissengaged positions of main circuit.
Fig. 7 is the end view that is illustrated in the inside of separator under the dissengaged positions of main circuit.
Fig. 8 is the local enlarged side view of circuit breaker of the action of expression Test Switchboard.
Fig. 9 is a perspective view of at length representing the formation of separator.
Figure 10 is a cutaway view of at length representing the formation of separator.
Figure 11 is the circuit diagram of circuit breaker.
Label declaration
The 1-circuit breaker, 2-power supply side terminal, 3-load side terminal, 4-decoupler casing, the 5-operating grip, 6-testing button, 8-breaking coil, 11-load side clamped nipple, the 11a-fixed contact, 19-contact rod, 20-printed base plate, 21-separator, the 23a-moving contact, 41-zero phase current transformer, 51-Test Switchboard, 51a-switching portion, 52-projection, 55-main circuit, 56-opens and closes contact, 57-test circuit, 59-electric-leakage detection circuit.
Embodiment
Below, an execution mode of circuit breaker of the present invention having been specialized with reference to description of drawings.Fig. 1 is the perspective view of the outward appearance of indication circuit decoupler.Fig. 2 is illustrated in the perspective view that operating grip has been connected the internal mechanism of circuit breaker under the state of main circuit.Fig. 3 is the expression end view of internal mechanism under on-state equally.Fig. 4 is the expression end view of the inside of separator under on-state equally.Fig. 5 is the perspective view that is illustrated in internal mechanism under the state that operating grip cut off main circuit.Fig. 6 is the expression end view of internal mechanism under dissengaged positions equally.Fig. 7 is the expression end view of the inside of separator under dissengaged positions equally.Fig. 8 (a) amplifies to be illustrated under the state that Test Switchboard cut off test circuit the end view of the part of circuit breaker.Fig. 8 (b) amplifies to be illustrated in Test Switchboard and to have connected under the state of test circuit the end view of the part of circuit breaker.Fig. 9 is a perspective view of at length representing the formation of separator.Figure 10 is a cutaway view of at length representing the formation of separator.Figure 11 is arranged on the circuit diagram of the circuit breaker on the printed base plate.In addition, in the following description, with the front surface of circuit breaker face, with the rear surface of circuit breaker face as the right side of Fig. 1 as the left side of Fig. 1, with the upper surface of circuit breaker face, with the lower surface of circuit breaker face as the downside of Fig. 1 as the upside of Fig. 1.
As shown in Figure 1, the circuit breaker 1 of present embodiment is used in single-phase three-wire formula circuit.The casing 4 of circuit breaker 1 has plastic left casing 4a and right casing 4b.Left side casing 4a and right casing 4b are combined into one the decoupler casing 4 of the thin box-shaped about configuration example such as thick 10mm.Be provided with power supply side terminal 2 in the rear surface of decoupler casing 4.Power supply side terminal 2 has three portion of terminal P1, P2, the P3 of inserted mode.The portion of terminal P1 of upside is the neutral pole terminal, and portion of terminal P2, the P3 of central authorities and downside are the voltage pole terminal.Each portion of terminal P1, P2, P3 form decoupler casing 4 at left and right directions otch fluting, be arranged in row along the vertical direction.And, in the inside of distribution board (omit diagram), as the conductor pin of power line or divide pillar to insert to be connected each portion of terminal P1, P2, P3.
The front surface of decoupler casing 4 forms skewed that past more upside retreats more, is provided with the load side terminal 3 of connected load distribution (omitting diagram) on this front surface.Load side terminal 3 has three portion of terminal L1, L2, the L3 that is made of speed knot terminal.Portion of terminal L1, L2, L3 are arranged in row along the vertical direction, and the portion of terminal L2 of central authorities is set as the neutral pole terminal, and portion of terminal L1 up and down, L3 are set as the voltage pole terminal and use.When the portion of terminal L3 of the portion of terminal L2 of the portion of terminal L2 of the portion of terminal L1 of upside and central authorities or central authorities and downside goes up the connected load distribution, can export the voltage of 100V.In addition, when the portion of terminal L3 of the portion of terminal L1 of upside and downside goes up the connected load distribution, can export the voltage of 200V.And under the situation of not using the neutral pole terminal, the portion of terminal L2 of central authorities is stopped up by the inaccessible plate 10 (with reference to Fig. 2) of slidingtype.
As Fig. 2, Fig. 3, shown in Figure 4, inside at decoupler casing 4, power supply side terminal joint 13 is becoming three sections up and down with the corresponding positional alignment of portion of terminal P1, P2, P3 of power supply side terminal 2, load side clamped nipple 11 is becoming three sections up and down with the corresponding positional alignment of portion of terminal L1, L2, L3 of load side terminal 3.Load side clamped nipple 11 is configured in the rear side that inserts the circular terminal hole 12 that the load distribution uses, and the locked joints 16 of the electric wire portion of locking load distribution is remained on this clamped nipple 11 by support 14.At the rear portion of load side clamped nipple 11, be provided with the fixed contact 11a of the switching contact 56 (with reference to Figure 11) that opens and closes main circuit 55.The load distribution only need insert terminal hole 12 and just can be connected simply with load side clamped nipple 11.And, at the front surface topmost of decoupler casing 4, supporting from locked joints 16 relieving rod 17 that distribution uses that discharges by fulcrum 15.
As Fig. 2, shown in Figure 5, operating grip 5 can be arranged on the upper surface of decoupler casing 4 rotationally along fore-and-aft direction, can make separator 21 actions and energising (the connection)/disconnection (cut-out) of switching main circuit by operating grip 5.When separator 21 switched to "on" position (state shown in Figure 2) with main circuit, operating grip 5 was poured onto the position that becomes almost parallel with the upper surface of decoupler casing 4, was accommodated between the pair of right and left protective bulkhead 7 (with reference to Fig. 1).Protective bulkhead 7 forms along the direction of operating of operating grip 5 is long longways at the upper surface of decoupler casing 4.When separator 21 switched to off-state (state shown in Figure 5) with main circuit, operating grip 5 erected from the upper surface of decoupler casing 4.
As Fig. 3, Fig. 6, shown in Figure 8,, be provided with the Test Switchboard 51 of connection/cut-out test circuit 57 usefulness in the front side of printed base plate 20.The bar-shaped elastomeric element that Test Switchboard 51 is made of steel wire etc. bends to U word shape and forms, and the top in decoupler casing 4 is configured to moving direction with separator 21 and intersects and extend along front and back.The cardinal extremity of Test Switchboard 51 is fixed on the printed base plate 20, and the side contact with switch portion 58 in test circuit 57 is electrically connected.The bent intermediate portion of Test Switchboard 51 is supported by the fulcrum 15 of relieving rod 17 near testing button 6.Front end (free end) at Test Switchboard 51 forms the switching 51a of portion, and it is arranged to and can contacts from the top, separate with the outstanding contact rod 19 (the opposing party contact of switch portion 58) that is arranged on the printed base plate 20.
Be used for to Test Switchboard 51 connect/testing button 6 of rupturing operation can slide up and down to be supported by decoupler casing 4 near the front side of operating grip 5.The lower end of testing button 6 near the fulcrum 15 from above and the upper portion butt of Test Switchboard 51.When testing button 6 was pushed by screwdriver etc., the 51a of switching portion made fulcrum 15 drop to fulcrum, contact test circuit 57 connections (with reference to Fig. 8 b) with contact rod 19.After the pressing force of testing button 6 was disengaged, under the resilient force of Test Switchboard 51, the 51a of switching portion rose, and leaves contact rod 19, and test circuit 57 cuts off (with reference to Fig. 8 a).At this moment, the upper surface of testing button 6 is exposed to the upper surface of decoupler casing 4.
As Fig. 4, shown in Figure 7, separator 21 forms four limit tubular or columns of lengthwise by synthetic resin, is arranged on the rear side of load side clamped nipple 11, can slide towards the direction parallel with the front surface of body casing 4.Front surface and load side clamped nipple 11 at separator 21 relatively form three peristomes 22 at above-below direction, are provided with the moving contact 23a that opens and closes contact 56 (with reference to Figure 11) in the inboard of peristome 22.Be configured at separator 21 under the state (with reference to Fig. 4) of initial position (decline end position) of downside, the fixed contact 11a of load side clamped nipple 11 enters into the inboard of separator 21 by peristome 22,23a contacts with moving contact, to open and close contact 56 and close, and make main circuit 55 be in "on" position.On the other hand, when separator 21 slides upward when detecting electric leakage etc. (with reference to Fig. 7), moving contact 23a is moved upward along with separator 21, unclamps to open and close contact 56, makes main circuit 56 become off-state.When main circuit 55 is returned to "on" position, operating grip 5 is pulled down, make separator 21 reset into initial position.
As Fig. 3, shown in Figure 6,, be provided with the open-close mechanism section 31 that makes separator 21 and operating grip 5 interlocks in the upper end of separator 21.Open-close mechanism section 31 is positioned at the left side (left casing 4a side) of Test Switchboard 51 above the load side clamped nipple 11 of epimere.At the right flank of open-close mechanism section 31, projection 52 forms near the 51a of switching portion from downside and Test Switchboard 51 and fastens.Under the state (state shown in Fig. 8 b) that the switch portion 58 of test circuit 57 is being closed, when separator 21 cuts off main circuit 55, rising (with reference to Fig. 6) along with separator 21, projection 52 upwards pushes away the upper portion of Test Switchboard 51 forcibly, make the 51a of switching portion separately, thereby test circuit 57 is cut off from contact rod 19.And under this state, projection 52 can not move the 51a of switching portion downwards, forbids the making operation of Test Switchboard 51.
As Fig. 9, shown in Figure 10, formed three installing holes 24 at above-below direction communicatively in the rear surface of separator 21 and the peristome 22 of front surface side, fixing moving contact 23a on the movable connection 23 in being installed in each installing hole 24.Between peristome 22 and installing hole 24, form opposed a pair of groove 25 mutually at the internal face of separator 21, the fore-and-aft direction of groove 25 roughly position intermediate be provided with the stage portion 26 of the high crank shape of rear side (installing hole 24 sides).On the other hand, movable connection 23 adopt rear portions upward or crooked downwards side be the plate-shaped member of L word shape, it is wideer than installing hole 24 that its bend forms width, works as the block of the movable connection under the installment state 23.Moving contact 23a is located at the leading section of movable connection 23, in the left and right sides of moving contact 23, has formed the protuberance 27 that is locked in stage portion 26 by the groove 25 of separator 21.
As Fig. 4, shown in Figure 7, when being installed in movable connection 23 on the separator 21, the installed inside of separator 21 to moving contact 23a energize downwards by pressing spring 28.So, can utilize the power of energizing by pressing spring 28, by on fixed contact 11a, make both contact conditions stable moving contact 23a, and keep the lock-out state of protuberance 27 and stage portion 26 securely by this contact force.In addition, form tab 30, between the spring support 29 of tab 30 and decoupler casing 4, insert the disconnection spring 32 that separator 21 is energized upward is installed in the rear surface of separator 21.
On the open-close mechanism section 31 of separator 21 upper ends, be provided with first cam part 33 and second cam part 34.First cam part 33 links with manner of execution with breaking coil 8 (with reference to Fig. 2, Fig. 5) by movable member 35, and second cam part 34 links with manner of execution by chain rod unit 36 and with operating grip 5.Between first cam part 33 and second cam part 34, insertion is installed with the two torsionspring of energizing to the direction of mutual interlock (omitting diagram).
The following describes the operation of circuit breaker 1.In the circuit breaker 1 of present embodiment, decoupler casing 4 is housed in the distribution board, bonding conductor post on power supply side terminal 2, connected load distribution on load side terminal 3.When main circuit 55 is in "on" position, as shown in Figure 4, by the upper surface at separator 21, resist disconnection the energizing power of spring 32 and be maintained at initial position by separator 21 with chain rod unit 36 for second cam part 34 of open-close mechanism section 31, and moving contact 23a contacts with fixed contact 11a.
On the other hand, when the electric-leakage detection circuit on the printed base plate 20 59 detected the electric leakage of main circuit 55, breaking coil 8 actions upwards pushed away movable member 35.Then, movable member 35 rotates first cam part, 33, the first cam parts 33 makes second cam part 34 obtain liberation, and second cam part 34 makes chain rod unit 36 obtain freedom.Thereby as shown in Figure 7, separator 21 rises because of the power of energizing that disconnects spring 32, and moving contact 32a separates from fixed contact 11a, and main circuit 55 is disconnected.When separator 21 arrives the rising end position, second cam part, 34 separated device 21 backward rotation, under the power of the energizing effect of torsionspring, first cam part 33 is by 34 lockings of second cam part.
Under the state of main circuit 55 energisings, when whether test circuit decoupler 1 normally carries out opening operation, shown in Fig. 8 (b), press testing button 6, the 51a of switching portion that makes Test Switchboard 51 contacts with contact rod 19, makes doubtful leakage current flow through test circuit 57 on the printed base plate 20.When electric-leakage detection circuit 59 detects doubtful leakage current, when breaking coil 8 normally carried out opening operation, separator 21 rose, and main circuit 55 is disconnected, and operating grip 5 erects.At this moment, along with the rising of separator 21, projection 52 is separated the switch portion 58 of unclamping test circuit 57 with the 51a of switching portion of Test Switchboard 51 from contact rod 19.Under this state, projection 52 remains on the position of having left contact rod 19 with the 51a of switching portion, forbids the making operation of Test Switchboard 51.
Thereby, even after having cut off main circuit 55, when having pressed testing button 6 unguardedly, also doubtful leakage current can be flowed into the test circuit 57 this states of affairs and prevent trouble before it happens.Behind EOT, as shown in Figure 3, operating grip 5 is pulled down to the position parallel with the upper surface of body casing 4, separator 21 is descended, make main circuit 55 return to "on" position.At this moment, the projection 52 of separator 21 moves to the downside of the 51a of switching portion, removes the constraint of Test Switchboard 51.
According to the circuit breaker 1 of present embodiment, because there are the 52 pairs of Test Switchboards of projection 51 on the separator 21 to carry out force disconnect, so do not need on printed base plate 20, limit switch to be set as in the past.Therefore, the space of printed base plate 20 peripheries be can dwindle, 4 miniaturizations of decoupler casing, slimming made.Formed projection 52 particularly because of the side that the open-close mechanism section 31 of separator 21 upper ends is configured in Test Switchboard 51, and in the side of open-close mechanism section 31, so can effectively utilize the upper space of decoupler casing 4.
In addition, because Test Switchboard 51 is to form horizontal U word shape with elongated bar-shaped elastomeric element, so can make the testing button 6 and contact rod 19 interlocks of the front and back that are positioned at separator 21 with the mechanism of compactness.Because testing button 6 is pushed the pars intermedia of Test Switchboard 51, thus can come the mobile significantly switching 51a of portion with very little operational ton, thus can make Test Switchboard 51 operation exactly in limited space.
And, because printed base plate 20 with about casing 4a, 4b dispose abreast, and be arranged in same column, so decoupler casing 4 is thinned to for example about 10mm with power supply side terminal 2 and load side terminal 3.And, because fixed contact 11a and moving contact 23a are housed in the inside of separator 21,, portion of a plurality of mechanism product are accumulated the mode of compactness so can effectively utilize space in the decoupler casing 4.Particularly because moving contact 23a and separator 21 are mobile integratedly, so also have the advantage that can prevent the malfunction that causes because of contact welding etc. conscientiously.
Circuit breaker of the present invention is not limited to above-mentioned execution mode, as following illustration, can suitably change without departing from the spirit and scope of the invention and constitutes.
(1) the present invention is applicable to the circuit breaker that uses in single-phase 2 line formula circuit, the three-phase circuit.
(2) in circuit breaker shown in Figure 11, make the front surface of decoupler casing 4 become the vertical plane parallel, and separator 21 can be arranged on movably the inside of decoupler casing 4 in vertical direction with the rear surface.
(3) constitute in circuit breaker shown in Figure 21: form separator 21 shorter, the surface is provided with the projection of L font thereon, by this projection Test Switchboard 51 is carried out the Strong system and cuts off.
(4) in circuit breaker shown in Figure 21, constitute: can disconnect main circuit 55 by the decline of separator 21.
(5) omit overcurrent shown in Figure 2 and disconnect the bimetal leaf 42 of usefulness or the movable electromagnetic plate 43 that short circuit current disconnects usefulness.
(6) contact that tabular or convex be set on printed base plate 20 replaces contact rod 19 shown in Figure 2.
(7) test circuit shown in Figure 11 57 and electric-leakage detection circuit 59 are arranged on the other printed base plate.
Claims (8)
1. circuit breaker, when detecting the electric leakage of main circuit, release mechanism portion action and separator is moved in the decoupler casing disconnects main circuit, it is characterized in that,
In the decoupler casing, be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit,
Be provided with cancel system in separator, this cancel system is removed the on-state of Test Switchboard forcibly when the direction that disconnects main circuit moves, and it is cut off, and forbids the making operation of Test Switchboard.
2. circuit breaker according to claim 1 is characterized in that, has the projection as above-mentioned cancel system in separator, and projection is the switching portion of the Test Switchboard contact separation from test circuit, and forbids that switching portion gets back to the contact side.
3. circuit breaker according to claim 1 and 2, it is characterized in that, have the testing button of the above-mentioned Test Switchboard of operation on the decoupler casing, testing button and test circuit are configured in the front and back of separator, and Test Switchboard is configured to moving direction with separator and intersects and extend.
4. circuit breaker, when detecting the electric leakage of main circuit, release mechanism portion action and separator is moved in the decoupler casing disconnects main circuit, it is characterized in that,
In the decoupler casing, be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit, on the decoupler casing, be provided with the testing button of operational testing switch,
On printed base plate, form test circuit, bend to the U font and form Test Switchboard with bar-shaped elastomeric element,
The cardinal extremity of Test Switchboard is fixedly attached on the side contact of test circuit, with the bent intermediate portion of Test Switchboard in being supported near the testing button on the decoupler casing, with the front end of Test Switchboard be arranged to can be with the outstanding the opposing party contact contact that is arranged on the test circuit on the printed base plate, separate.
5. circuit breaker according to claim 4, it is characterized in that, front surface at above-mentioned decoupler casing is provided with the load side terminal, rear surface at the decoupler casing is provided with power supply side terminal, be provided with at the upper surface of decoupler casing main circuit is connected/operating grip and the testing button of rupturing operation, dispose printed base plate and Test Switchboard in parallel to each other in the inside upper part of decoupler casing.
6. circuit breaker, when detecting the electric leakage of main circuit, release mechanism portion action and separator is moved in the decoupler casing disconnects main circuit, it is characterized in that,
Rear surface at the decoupler casing is provided with power supply side terminal, is provided with the load side terminal at the front surface of decoupler casing,
In the decoupler casing, separator is arranged to and can be moved to the direction with the front surface almost parallel of decoupler casing, and be provided with and make doubtful electric leakage state test the test circuit of the action of release mechanism portion, and the Test Switchboard of connection/cut-out test circuit
The bar-shaped elastomeric element that extends with intersecting with the moving direction of separator forms Test Switchboard, and it is disposed along the medial surface of decoupler casing.
7. circuit breaker according to claim 6, it is characterized in that, on printed base plate, form above-mentioned test circuit, dispose printed base plate abreast with the medial surface of decoupler casing, one end of Test Switchboard is fixedly attached on the side contact of test circuit, the front end of Test Switchboard is arranged to and can is contacted, separate with the outstanding the opposing party contact that is arranged on the test circuit on the printed base plate.
8. according to claim 6 or 7 described circuit breakers, it is characterized in that, be provided with at the upper surface of above-mentioned decoupler casing main circuit is connected/operating grip of rupturing operation, form to the side-prominent projection of Test Switchboard in the side of the upper end of separator, when separator when the direction that disconnects main circuit rises, projection is removed the on-state of Test Switchboard forcibly, and it is cut off, and forbids the making operation of Test Switchboard.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-220213 | 2006-08-11 | ||
| JP2006220213 | 2006-08-11 | ||
| JP2006220213A JP4939869B2 (en) | 2006-08-11 | 2006-08-11 | Circuit breaker |
| JP2006-243177 | 2006-09-07 | ||
| JP2006243177A JP4852380B2 (en) | 2006-09-07 | 2006-09-07 | Circuit breaker |
| JP2006243177 | 2006-09-07 | ||
| JP2006251380 | 2006-09-15 | ||
| JP2006-251380 | 2006-09-15 | ||
| JP2006251380A JP4852381B2 (en) | 2006-09-15 | 2006-09-15 | Circuit breaker |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105589029A Division CN102013367B (en) | 2006-08-11 | 2007-08-10 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101123157A true CN101123157A (en) | 2008-02-13 |
| CN101123157B CN101123157B (en) | 2012-05-23 |
Family
ID=39085432
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101408272A Active CN101123156B (en) | 2006-08-11 | 2007-08-10 | Circuit breaker |
| CN2007101408408A Active CN101123157B (en) | 2006-08-11 | 2007-08-10 | Circuit breaker |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101408272A Active CN101123156B (en) | 2006-08-11 | 2007-08-10 | Circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4939869B2 (en) |
| KR (1) | KR101026592B1 (en) |
| CN (2) | CN101123156B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101028183B1 (en) * | 2006-08-11 | 2011-04-11 | 가와무라 일렉트릭 가부시키가이샤 | Circuit breaker |
| JP4908118B2 (en) * | 2006-09-05 | 2012-04-04 | 河村電器産業株式会社 | Circuit breaker |
| JP4908121B2 (en) * | 2006-09-07 | 2012-04-04 | 河村電器産業株式会社 | Circuit breaker |
| JP4908139B2 (en) * | 2006-10-05 | 2012-04-04 | 河村電器産業株式会社 | Circuit breaker |
| JP4852385B2 (en) * | 2006-10-05 | 2012-01-11 | 河村電器産業株式会社 | Circuit breaker |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02123629A (en) * | 1988-10-31 | 1990-05-11 | Toshiba Lighting & Technol Corp | Earth leakage breaker |
| JP2872950B2 (en) * | 1995-11-01 | 1999-03-24 | 日東工業株式会社 | Earth leakage breaker |
| JP2000003661A (en) | 1998-06-15 | 2000-01-07 | Fuji Electric Co Ltd | Earth leakage breaker |
| JP3794451B2 (en) | 1998-06-15 | 2006-07-05 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP2002184296A (en) * | 2000-12-19 | 2002-06-28 | Kawamura Electric Inc | Earth leakage breaker |
| JP2003045312A (en) | 2001-07-26 | 2003-02-14 | Mitsubishi Electric Corp | Ground-fault circuit interrupter |
| CN1349105A (en) * | 2001-11-05 | 2002-05-15 | 常熟开关厂 | Test device for electronic circuit breaker |
| JP4556614B2 (en) * | 2004-10-25 | 2010-10-06 | 富士電機機器制御株式会社 | Earth leakage breaker |
| KR101028183B1 (en) * | 2006-08-11 | 2011-04-11 | 가와무라 일렉트릭 가부시키가이샤 | Circuit breaker |
-
2006
- 2006-08-11 JP JP2006220213A patent/JP4939869B2/en active Active
-
2007
- 2007-07-24 KR KR1020070073949A patent/KR101026592B1/en active IP Right Grant
- 2007-08-10 CN CN2007101408272A patent/CN101123156B/en active Active
- 2007-08-10 CN CN2007101408408A patent/CN101123157B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101123156A (en) | 2008-02-13 |
| KR101026592B1 (en) | 2011-04-04 |
| JP4939869B2 (en) | 2012-05-30 |
| CN101123156B (en) | 2011-08-10 |
| JP2008047362A (en) | 2008-02-28 |
| CN101123157B (en) | 2012-05-23 |
| KR20080014610A (en) | 2008-02-14 |
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