CN1061773C - Leakage circuit breaker - Google Patents
Leakage circuit breaker Download PDFInfo
- Publication number
- CN1061773C CN1061773C CN98106207A CN98106207A CN1061773C CN 1061773 C CN1061773 C CN 1061773C CN 98106207 A CN98106207 A CN 98106207A CN 98106207 A CN98106207 A CN 98106207A CN 1061773 C CN1061773 C CN 1061773C
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- Prior art keywords
- bimetallic
- trip
- terminal
- ping
- bar
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
To miniaturize a pushbutton switch without causing the plastic deformation of a stem and a movable contact piece, when an excessive pushing force is applied on an operation key and hold the high reliability, by providing stopper parts projecting from the circumferential part of an opening to the operation key side in a housing and bringing the stopper parts in contact with the operation key, when the operation key pushes the stem by a prescribed quantity. A pair of pull-out prevention parts 1b which regulate the raising of a stem 5 and prevent it from being detached and a pair of stopper parts 1c which are brought in contact with an operation key 7, when the operation key 7 pushes the stem 5 by a prescribed quantity, are projectingly provided in an upper end part of a housing 1 surrounding an opening. When the bottom face of the operation key 7 pushes the operation projection part 5a of the stem 5 by prescribed strokes in a state of a switch being turned off, and when the operation key 7 is brought in contact with the stopper parts 1c of the housing 1, the stem 5 is prevented from being pushed further so that the lowest point of the operation key 7 operated to receive the pushing pressure is regulated by the stopper parts 1c.
Description
The present invention relates to the such outward appearance of using with for example electric light distribution board of the type of deciding through consultation Inturruptor for sub-line and the small-sized residual current circuit breaker that constitutes.
As the Inturruptor for sub-line of outward appearance the type of the deciding through consultation Inturruptor for sub-line of using as the attached book 5 described electric light distribution boards of the JIS-C8370 of Japanese Industrial Standards, a kind of Figure 22 is arranged to as shown in Figure 25 circuit-breaker.That is, Figure 22 for example represents that the master who discloses the available circuit circuit breaker that structure is identical shown in 1989 No. 56493 communique with Japanese patent of invention looks cutaway view, and its expression closed circuit state.Figure 23 is that the master that expression Figure 22 circuit-breaker is in off state looks cutaway view, and Figure 24 is that the master that expression Figure 22 circuit-breaker is made tripping operation action back momentary status looks cutaway view, and Figure 25 is the front view of the amplification of expression bimetallic and power supply side terminal connection status.
Among Figure 22, the 1st, base, form with synthetic resin, the 2nd, to be the handlebar of center rotatably support from base 1 outstanding axle 1a, 3 are mounted in the torsion spring on the 1a, make one end lodge on base 1, other end lodge is on handlebar 2, handlebar 2 is applied power to counter clockwise direction, the 4th, form the connecting pin of U word shape, the foot of a side is inserted in rotationally in the through hole 2b that is provided with from handlebar 2 outstanding jut 2a.
The 5th, movable contact is rotatably supported on the axle 6 that is set in base 1, and has right the 1st claw face 5a and the 2nd claw face 5b of pivoting end formation in a side, is fixing moving contact 5c in the other end.The 7th, the card with fastener 7a ends shift fork, and with movable contact 5 the same being rotatably supported on the axle 6, and utilization is wound on the torsion spring 8 on the axle 6 and applies power in the opposite direction to the application of force side with movable contact 5 all the time.The 9th, roller is inserted in the opposite side foot of connecting pin 4 rotationally, and all the time by the 1st claw face 5a and the 2nd claw face 5b and fastener 7a clamping.
12 are provided in a side of the 1st spring installation shaft on the movable contact 5, the 13rd, be set in the 2nd spring installation shaft on the base 1, the 14th, be hung on the extension spring between the 1st spring installation shaft 12 and the 2nd spring installation shaft 13, the 15th, be inlaid in the fixed contact therefor on the base 1, and relatively be fixed with fixed contact 15a with moving contact 5c, the 16th, electromagnetic trip device, the 17th, be inlaid on the base 1 and form the yoke of tripgear 16 magnetic circuits, the 18th, solenoid.Solenoid 18 1 ends are connected with fixed contact therefor 15, and the other end and load side terminal 19 are electrically connected.
The 20th, tension disc, the 21st, terminal screw can be connected external conductor (not shown) with load side terminal 19.The 22nd, when solenoid 18 excitations and the elastic force of stage clip 23 contend with and inhale in figure left to plunger, the 24th, the bar that drives of direction left when attracting this plunger 22.The 29th, the pliability conductor, an end is electrically connected with movable contact 5, and the other end and bimetallic 30 are electrically connected.31 are mounted in the insulated tube on the bimetallic 30.The 32nd, with the power supply side terminal of copper or Cu alloy material formation, as shown in figure 23, the one end is electrically connected with bimetallic 30 by the muffler plate (arc runner) 33 that forms with magnetic materials such as iron plates, and the other end is connected external conductor (not shown) with terminal screw 35 with tension disc 34.The 36th, adjust screw, be spun on the formed internal thread part of vertical terminals sheet 32a of power supply side terminal 32, play the weld part effect of muffler plate 33 and bimetallic 30, and the gap between the end 7b that can end shift fork 7 to the leading section 30a and the card of bimetallic 30 be adjusted.The 37th, to resulting from the arc-extinction device that electric arc between two contact 5c, 15a carries out extinguishing arc.
In this existing circuit-breaker, under any state in the off state of the closed circuit state of circuit-breaker shown in Figure 22 and circuit-breaker shown in Figure 23, roller 9 all is clamped in the 1st claw face 5a and the 2nd claw face 5b of movable contact 5 and blocks between the fastener 7a that ends shift fork 7, ends connecting pin 4 with card.When circuit-breaker shown in Figure 23 is done ON when operation with handlebar 2 to clockwise direction from off state, the elbow-bar mechanism that forms with the jut 2a of handlebar 2 and connecting pin 4 is then crossed the dead point and is extended, movable contact 5 counterclockwise rotates for middle mind-set with axle 6, moving contact 5c contacts with fixed contact 15a, becomes closed circuit state shown in Figure 22.
Then, when circuit-breaker shown in Figure 22 is done OFF when operation with handlebar 2 to counter clockwise direction from closed circuit state, then cross the dead point and bending with the jut 2a of handlebar 2 and the elbow-bar mechanism of connecting pin 4 formation, movable contact 5 is that middle mind-set clockwise direction rotates with axle 6, moving contact 5c leaves fixed contact 15a, becomes off state shown in Figure 23.
In the closed circuit state of circuit-breaker shown in Figure 22, when in circuit, flowing through overcurrent, the free end 30a of bimetallic 30 is crooked and the end 7b that card ends shift fork 7 is pushed, or the other end 7c that plunger 22 produces action and ends shift fork 7 with 24 pairs of cards of bar pushes, rotate for middle mind-set clockwise direction with axle 6 thereby make card end shift fork 7, releasing roller 9 is clamped in the 1st claw face 5a and the 2nd claw face 5b of movable contact 5 and blocks between the fastener 7a that ends shift fork 7.The card of connecting pin 4 only is disengaged along with the releasing of this roller 9, and movable contact 5 is that middle mind-set clockwise direction rotates because of the elastic force of extension spring 14 with axle 6, and moving contact 5c leaves fixed contact 15a, becomes tripped condition as shown in Figure 24.
Then, handlebar 2 rotates to counter clockwise direction because of the elastic force of torsion spring 3, roller 9 is at the 1st claw face 5a and the 2nd claw face 5b and block between the fastener 7a that ends shift fork 7 mobile, roller 9 is clamped between the 1st claw face 5a and the 2nd claw face 5b and the fastener 7a and card ends connecting pin 4, handlebar 2 just moves to the position identical with off state shown in Figure 23, automatically resets.
In above-mentioned existing circuit-breaker, because electromagnetic trip device 16 will have bigger space, so the 2 superfine product circuit-breakers that will make with 1 superfine product circuit-breaker identical appearance size are difficult.That is, for example at described electric light distribution board with deciding through consultation that in the type Inturruptor for sub-line, the width dimensions of 1 superfine product occasion is made 25mm, then the width dimensions of 2 superfine product occasions is prescribed and makes 50mm.But, in recent years, seeking to use the width dimensions of 1 superfine product to constitute the product of the circuit-breaker of 2 utmost points.In this case, be difficult promptly with existing structure as described above with the circuit-breaker that the width dimensions of 1 superfine product constitutes 2 utmost points.Especially in structure with leakage tripping function, be under the situation of residual current circuit breaker, owing to will add zero phase sequence currenttransformer and control circuit etc., so the residual current circuit breaker that constitutes 2 utmost points with the width dimensions of 1 superfine product is extremely difficult.
In addition, under the situation of big electric currents such as short circuit current flow, as using among Figure 25 shown in the arrow A, though electric current will be shunted to the power supply side terminal 32 → adjustment screw 36 → muffler plate 33 and the weld part → bimetallic 30 of bimetallic 30, but because the contact resistance of the abutting part of the leading section of adjustment screw 36 and muffler plate 33 is bigger, so the heating of abutting part increases gradually, produces melting loss sometimes.Therefore, after short circuit current is opened circuit, exist the big problem of change change that causes the tripping operation time limit because of melting loss.
In addition, owing to will adjust in the internal thread part of less effective diameter that screw 36 is tightened on the power supply side terminal 32 that forms with thin copper of thickness of slab or Cu alloy material, so exist the more weak and problem of easy breakage of the intensity of threaded portion.
In addition because pliability conductor 29 guides movable contact 5 into and approaches conducting parts one side of bimetallic 30 from bimetallic 30, so pliability conductor 29 sometimes with conducting parts one side contacts of bimetallic 30.Because the resistance value of bimetallic 30 causes tripping operation time limit instability because of this contact changes, so must load onto insulated tube 31 on bimetallic 30.
In view of the shortcoming of above-mentioned existence, the 1st purpose of the present invention is, uses the overall dimension identical with the structure of 1 superfine product to obtain a kind of residual current circuit breaker of 2 utmost points in the type of the deciding through consultation Inturruptor for sub-line that for example electric light distribution board is used.
The 2nd purpose of the present invention is, obtains a kind of in the less residual current circuit breaker of back tripping operation time limit change that short circuit current is opened circuit.
The 3rd purpose of the present invention is, obtains a kind of intensity of adjusting bolt portion and is difficult to damaged residual current circuit breaker by force.
The 4th purpose of the present invention is, obtains a kind of pliability conductor and is difficult to the residual current circuit breaker that contacts with bimetallic conducting parts.
Residual current circuit breaker of the present invention has: be provided with the bimetallic of power supply side terminal, an end and the portion of terminal combination of described power supply side terminal, because of flowing through fixed iron piece that bimetallic electric current produces electromagnetic force with the movable contact that is connected with the bimetallic other end by the pliability conductor and they are by the portion of overcurrent trip mechanism of blocking;
Be provided with the load side terminal, be connected with described load side terminal by leading body and can be with the fixed contact therefor of described movable contact contact separation, be located at zero phase sequence currenttransformer on the leading body, the output of zero phase sequence currenttransformer detected and produce the control circuit portion of leakage tripping signal and the electromagnet portion of moving according to the leakage tripping signal and they are by the portion of leakage tripping mechanism of blocking; And,
The framework that portion of overcurrent trip mechanism and portion of leakage tripping mechanism are held.
In addition, also have: be respectively equipped with the bimetallic of a pair of power supply side terminal, an end and the portion of terminal combination of described power supply side terminal, because of flowing through bimetallic electric current fixed iron piece that produces electromagnetic force and the movable contact that is connected with the bimetallic other end by the pliability conductor and with the portion of overcurrent trip mechanism of their blocking;
Be provided with a pair of load side terminal, be connected with described load side terminal by leading body and can with a pair of fixed contact therefor of described movable contact contact separation, be located at zero phase sequence currenttransformer on the leading body, to the output of zero phase sequence currenttransformer detect and produce the control circuit portion of leakage tripping signal, the electromagnet portion of moving according to the leakage tripping signal and make the leakage tripping display of corresponding actions with the action of electromagnet portion and they are by the portion of leakage tripping mechanism of blocking; And,
The framework that portion of overcurrent trip mechanism and portion of leakage tripping mechanism are held.
In addition, also have: be provided with the manual operation handlebar, with the linkage of described manual operation with the action interlock of handlebar, be connected with linkage and form the transverse arm that can embed movable contact, in a pair of fixed iron piece by the movable iron that electromagnetic force attracted of the fixed iron piece of a utmost point, the card that is produced the tripping operation action by the bimetallic driving of a movable iron or a utmost point side ends shift fork, the electromagnet portion of moving according to the leakage tripping signal produces the trip(ping) bar and the framework that is used for assembling these parts of tripping operation action when moving, and they are by the open-close mechanism section of blocking, and open-close mechanism section is contained in the framework.
In addition, also have: be provided with in a pair of bimetallic the trip(ping) bar that forms the bimetallic by another utmost point side and drive, on the described trip(ping) bar by the movable iron of the electromagnetic attracting force of the fixed iron piece of another utmost point in case when driving by bimetallic or attracting movable iron, forms by fixed iron piece by card end shift fork produce that tripping operation is moved and they by the trip(ping) bar portion of blocking, trip(ping) bar portion is contained in the framework.
In addition, the structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into the adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
Because structure of the present invention constitutes as mentioned above, so can obtain effect as described below.
Adopt residual current circuit breaker of the present invention, owing to make mechanism unitizations such as over current trip, leakage tripping mechanism, open-close mechanism section and trip(ping) bar portion, and make and only embed in the plastic framework, so can in the type of the deciding through consultation Inturruptor for sub-line that for example electric light distribution board is used, use the overall dimension identical to obtain a kind of residual current circuit breaker of 2 utmost points with the structure of 1 superfine product.
In addition, because the structure of over current trip is: by being pressed into the adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, so that bimetallic free-ended position is adjusted, so, bigger electric current can not shunted by adjusting screw, and the joint portion of bimetallic and terminal is also unstressed, thereby has solved the shortcoming of the tripping operation time limit change that is produced in back that short circuit current is opened circuit.
The simple declaration of accompanying drawing
Fig. 1 is the residual current circuit breaker biopsy cavity marker devices of the embodiment of the invention 1 and represent that inner master looks cutaway view.
Fig. 2 is that the master of residual current circuit breaker when off state of presentation graphs 1 looks cutaway view.
Fig. 3 is that the master of residual current circuit breaker when tripped condition of presentation graphs 1 looks cutaway view.
Fig. 4 is the backsight cutaway view of residual current circuit breaker when closed circuit state of presentation graphs 1.
Fig. 5 is the backsight cutaway view of residual current circuit breaker when off state of presentation graphs 1.
Fig. 6 is the backsight cutaway view of residual current circuit breaker when tripped condition of presentation graphs 1.
Fig. 7 is that the master of the amplification of expression over current trip of the present invention looks cutaway view.
Fig. 8 is the vertical view of amplification of the over current trip of Fig. 7.
Fig. 9 is that the master of the amplification of expression over current trip of the present invention looks cutaway view.
Figure 10 is the residual current circuit breaker biopsy cavity marker devices of embodiment 2 and represent inner backsight cutaway view.
Figure 11 is the backsight cutaway view of residual current circuit breaker when off state of expression Figure 10.
Figure 12 is by the structure chart of the over current trip of blocking.
Figure 13 is by the structure chart of the leakage tripping mechanism of blocking.
Figure 14 is by the structure chart of the open-close mechanism section of blocking.
Figure 15 is by the structure chart of the trip(ping) bar portion of blocking.
Figure 16 a is the front view of the employed transverse arm of residual current circuit breaker of the present invention,
Figure 16 b is the end view of the employed transverse arm of residual current circuit breaker of the present invention,
Figure 16 c is the rearview of the employed transverse arm of residual current circuit breaker of the present invention.
Figure 17 is the outside drawing that the employed card of residual current circuit breaker of the present invention ends shift fork.
Figure 18 is the outside drawing of the employed arm of residual current circuit breaker of the present invention.
Figure 19 is the outside drawing of the employed trip(ping) bar of residual current circuit breaker of the present invention.
Figure 20 is the key diagram of open-close mechanism section of the present invention when being the ON state.
Figure 21 is the key diagram of open-close mechanism section of the present invention when being the OFF state.
Figure 22 is that the master of the existing residual current circuit breaker of expression looks cutaway view.
Figure 23 is that the master of residual current circuit breaker when off state of expression Figure 22 looks cutaway view.
Figure 24 is that the master of residual current circuit breaker when tripped condition of expression Figure 22 looks cutaway view.
Figure 25 is the front view of the amplification of expression bimetallic of prior art and power supply side terminal connection status.
Fig. 1 is the residual current circuit breaker biopsy cavity marker devices of the present invention's one example and represent that inner master looks cutaway view, the closed circuit state of expression residual current circuit breaker.Fig. 2 is that the master of residual current circuit breaker when off state of presentation graphs 1 looks cutaway view, Fig. 3 is that the master of residual current circuit breaker when tripped condition of presentation graphs 1 looks cutaway view, Fig. 4 is the backsight cutaway view of residual current circuit breaker when closed circuit state of presentation graphs 1, Fig. 5 is the backsight cutaway view of residual current circuit breaker when off state of presentation graphs 1, Fig. 6 is the backsight cutaway view of residual current circuit breaker when tripped condition of presentation graphs 1, Fig. 7 is that the master of the amplification of expression over current trip of the present invention looks cutaway view, Fig. 8 is the vertical view of amplification of the over current trip of Fig. 7, and Fig. 9 is that the master of the amplification of expression over current trip of the present invention looks cutaway view.In addition, the overall dimension size of the residual current circuit breaker in this example is suitable for the size of 1 superfine product situation of defined in the type of the deciding through consultation Inturruptor for sub-line that the attached book 5 described electric light distribution boards as the JIS-C8370 of Japanese Industrial Standards are used.
In Fig. 1～Fig. 4,40 is the 1st covers, the 41st, and base, 42 is the 2nd cover (shown in Figure 5), all forms with synthetic resin.The 43rd, the insulation framework that is made of described the 1st cover 40 and base 41 and the 2nd cover 42, and as mentioned above forms the size of 1 superfine product of the type of the deciding through consultation Inturruptor for sub-line that the electric light distribution board uses.The 44th, fixed contact therefor, the 45th, be fixed on the fixed contact on the fixed contact therefor 44, the 46th, with the described fixed contact 45 relative also movable contacts with moving contact 47 of contact separation.
The 48th, with synthetic resin formation transverse arm as shown in Figure 16, an end rotates and is bearing in freely on the axle 71 described later, and an end that is located at each the movable contact 46 on the two poles of the earth side by side is embedded into and is keeping.In addition, in Figure 16, a is a front view, and b is an end view, and c is a rearview.The 49th, crimp spring is installed between movable contact 46 and the transverse arm 48 and all the time moving contact 47 is applied power to the direction that contacts with fixed contact 45.The 50th, transverse arm 48 is applied the transverse arm spring of power to clockwise direction.The 51st, the pliability conductor, an end is connected with movable contact 46, and the other end is connected with the free end 62a of the bimetallic 62 of over current trip 60 described later.The 52nd, to resulting from the arc-extinction device that electric arc between two contacts 45,47 carries out extinguishing arc.
The 60th, over current trip, detailed structure illustrates by Fig. 7～Fig. 9.The 61st, the electric conducting material of copper or copper alloy etc. is carried out the power supply side terminal that bending forms, by horizontal portion of terminal 61a, the 61b of vertical terminals portion, inclination portion of terminal 61c with from the root lancing of described inclination portion of terminal 61c and sagging sagging portion of terminal 61d is formed, and chimeric with the groove 41a of base 41.The 62nd, flat bimetallic, an end are fixed on the inclination portion of terminal 61c of power supply side terminal 61.The 63rd, fixed iron piece, by magnetic material bendings such as iron plates and be コ word shape, the baseplate part 63a with internal thread part is provided between the 61b of vertical terminals portion and sagging portion of terminal 61d of power supply side terminal 61.
The 64th, with the fixed iron piece 63 relative movable iron that set of a utmost point (utmost point of Fig. 1～side shown in Figure 3), form with magnetic materials such as iron plates, its central portion rotates supporting freely and is on the axle 65 of maintenance on the framework 70 described later.The 66th, be spun on the adjustment screw on the fixed iron piece 63, by screwing in from state shown in Figure 7, and the sagging portion of terminal 61d of power supply side terminal 61 is pressed into to position shown in Figure 9, perhaps by turning back to original position, and act on the 61b of vertical terminals portion, make width L2 root 61e (shown in Figure 8) distortion narrower and small than the width L1 of the sagging portion of terminal 61d of inclination portion of terminal 61c, thereby bimetallic 62 is deformed into as shown in Figure 9, and the clearance G between the 1st snap-latch piece 72a that the free end 62a and the card described later of bimetallic 62 ended shift fork 72 is adjusted.
The 69th, open-close mechanism section.The 70th, the framework of supporting open-close mechanism section 69 dissects the part and illustrates, and is supported with spools 92 by the axle of setting 65 between base 41 and the 1st cover 40.The 72nd, forming as shown in Figure 17, the card of shape ends shift fork, the 1st snap-latch piece 72a that its free end 62a that is formed with bimetallic 62 engage with the one end, the 2nd snap-latch piece 72b that is L word shape that the other end engages with roller 79 described later, engage the 3rd snap-latch piece 72c of aftermentioned trip(ping) bar 91 when the direction of arrow is crooked, and rotates freely the earth's axis and be bearing on spools 65.
The 73rd, form the arm of shape as shown in Figure 18, it is formed with the press section 73b that axle is bearing in gathering sill 73a that the roller pin 75 on the motion arm 74 described later leads, the jut 48a of transverse arm 48 is pushed, and rotates freely that the earth's axis is bearing on the axle 65.The 74th, motion arm, by axle supporting at one end roller pin 75 and engage with gathering sill 73a.The 76th, with the handlebar of synthetic resin formation, have from the 1st outstanding jut 76a of outer peripheral face, from the 2nd outstanding jut 76b of end face, from the 3rd outstanding jut 76c of the end face of back side portion, be provided in the inside of insulation framework 43, and can carry out from the outside ON, OFF the operation, by be intercalated in the 1st jut 76a the axle 77 and with motion arm 74 interlocks.The 78th, be intercalated in the manipulation arbor of framework 70, rotate and support handlebar 76 freely.The 79th, roller rotates and inserts the roller pin 75 that is installed on the motion arm 74 freely.
The 80th, from fixed contact therefor 44 to the conductor that is electrically connected the load side terminal 81, the 82nd, connect conductor 80 and zero phase sequence currenttransformer that the unsymmetrical current of circuit is detected.The 83rd, to the control circuit portion that controls with zero phase sequence currenttransformer 82 detected Zero-phase currents, and constituted by the electronic components such as resistor, capacitor and IC that are installed on the substrate.The 84th, the leakage tripping device, it comprises: electromagnet portion 87; Plunger 88; Upper surface 41a from base 41 when leaking electricity action gives prominence to and leakage tripping display, leakage tripping the Show Button 89 of the situation after moving of representing to leak electricity; Apply the Show Button spring 90 of power etc. to directions that this leakage tripping the Show Button 89 is given prominence to.
The 91st, form the trip(ping) bar of shape as shown in Figure 19, rotate ground axle suspension freely by axle 92, and it comprises: with the plunger holding section 91a of the leading section butt of plunger 88; The claw holding section 91b that fastens with the 89a of claw portion that is formed on leakage tripping the Show Button 89 1 ends; End the shift fork holding section 91c that the 3rd snap-latch piece 72c of shift fork 72 fastens with card.93 are mounted in the trip(ping) bar spring on the axle 92, all the time to counterclockwise trip(ping) bar 91 being applied power.
In the back side portion of the base 41 of the residual current circuit breaker of Fig. 4～shown in Figure 6, constitute with another gate terminal of anterior open-close mechanism section 69 adjacency, comprise the energising member and the demonstration auxiliary part of over current trip etc.Among the figure, 44～52,60～66,80,81 with above-mentioned shown in Figure 1 identical, omits its explanation.
The 95th, axle is bearing in the guide plate on the handlebar 76, the 96th, be fastened between guide plate 95 and the handlebar 76, for the relevant position that remains at regulation applies the handlebar spring of power to guide plate 95 and handlebar 76, the 97th, rotate the connecting pin that is U word shape that freely guide plate 95 is connected with transverse arm 48.Guide plate 95, handlebar spring 96 and connecting pin 97 utilize base 41 interpolar next door 41b and with open-close mechanism section 6 insulation of front portion.
In said structure, the part of over current trip 60 is with shown in Figure 12 being embedded in the framework by the mechanism of blocking.Promptly, owing to over current trip 60 has bimetallic 62 that a pair of power supply side terminal 61, an end be connected with the inclination portion of terminal 61c of described power supply side terminal 61 respectively, produces the fixed iron piece 63 and the movable contact 46 that is connected with bimetallic 62 free end 62a by pliability conductor 51 of electromagnetic force by the electric current that flows through described bimetallic 62, so after embedding framework, do not need secure component or connect conducting parts to grade.
In addition, the part of leakage tripping device 84 is with shown in Figure 13 being embedded in the framework by the mechanism of blocking.Promptly, because have a pair of load side terminal 81, be connected with described load side terminal 81 and constitute by leading body 80 and a pair of fixed contact therefor 44 of movably contact 46 contact separations, be located at zero phase sequence currenttransformer 82 on the leading body 80, to the output of described zero phase sequence currenttransformer 82 detect and produce the control circuit portion 83 of leakage tripping signal, the electromagnet portion 87 of moving according to the leakage tripping signal and make leakage tripping the Show Button 89 of corresponding actions with the action of electromagnet portion 87, therefore, after embedding framework, do not need secure component or connect conducting parts to grade.
In addition, the part of open-close mechanism section 69 is with shown in Figure 14 being embedded in the framework by the mechanism of blocking.Promptly, owing to have manual operation handlebar 76, with described manual operation linkage with motion arm 74 of the action interlock of handlebar 76 and so on, be connected with described linkage and form the transverse arm 48 that can embed described movable contact 46, by the movable iron that electromagnetic force attracted 64 of the fixed iron piece 63 of a utmost point in the described a pair of fixed iron piece 63, the card that is produced the tripping operation action by bimetallic 62 drivings of a described movable iron 64 or a described utmost point side ends shift fork 72, electromagnet portion 87 produces the trip(ping) bar 91 of tripping operation action and is used for assembling the framework 70 of these parts when making leakage tripping the Show Button 89 make corresponding actions when moving, therefore, after embedding framework, do not need secure component etc.
And the part of trip(ping) bar 98 is with shown in Figure 15 being embedded in the framework by the mechanism of blocking.Promptly, since have a pair of bimetallic 62 in form by the trip(ping) bar 98 of bimetallic 62 drivings of another utmost point side, on described trip(ping) bar 98 by the movable iron 67 of the electromagnetic attracting force of the fixed iron piece 63 of another utmost point, therefore, after the embedding framework, do not need secure component etc.
In addition, except also being embedded framework and each mechanism, so do not need secure component or connect conducting parts to grade by the arc-extinction device the mechanism of blocking 52, guide plate 95 or connecting pin 97 etc.
Below, describe with regard to operation principle.
Closed circuit state in residual current circuit breaker shown in Figure 1, promptly, be in the state that Figure 20 represents detailed position, in case handlebar 76 is carried out the OFF operation to clockwise direction, then surpass the dead point and bending with the jut 76a of handlebar 76 and the elbow-bar mechanism of motion arm 74 and axle 77 formation, transverse arm 48 is that middle mind-set clockwise direction rotates because of the elastic force of transverse arm spring 50 with axle 71, as Fig. 2 and represent the shown in Figure 21 of detailed position, make the moving contact that remains in the movable contact 46 on the transverse arm 48 leave fixed contact 45, rotate again, position at the end face 48b butt of the end face 70a of framework 70 and transverse arm 48 stops, and finishes departure motion.
Then, in the closed circuit state of Fig. 1, when flowing through overcurrent in the circuit, the 1st snap-latch piece 72a of shift fork 72 pushes the free end 62a of bimetallic 62 to only blocking to the direction of arrow is crooked, or when movable iron 64 was fixed iron plate 63 attractions, the bottom 64a of movable iron 64 pushed the 1st snap-latch piece 72a by the 2nd jut 98b of trip(ping) bar 98.Push by this, card ends shift fork 72 and counterclockwise rotates for middle mind-set with axle 65, removes only the engaging of the 2nd snap-latch piece 72b of shift fork 72 of roller 79 and card, that is, and and the engaging of releasing motion arm 74.
Then, in case remove the engaging of motion arm 74, as shown in Figure 3, transverse arm 48 utilizes the elastic force of transverse arm spring 50 and is that fulcrum rotates to clockwise direction with axle 71, make moving contact 47 leave fixed contact 45, rotate again, stop the end departure motion in the position of the end face 70a of framework 70 and the end face 48b butt of transverse arm 48.
At this moment, at another utmost point of adjacency shown in Figure 6, utilize handlebar spring 96 and all the time handlebar 76 is applied power, so that remain on the same relevant position with guide plate 95.Therefore, the action interlock of the guide plate 95 in handlebar 76 and the linkage that is constituted with transverse arm 48, connecting pin 97 and guide plate 95, and utilize the elastic force of handlebar spring 96 and rotate to the OFF locality, stop at Fig. 6 and as shown in Figure 3 ON, the trip position in OFF centre position, residual current circuit breaker is expressed as tripped condition.
Below, the operation principle of leakage tripping device 84 is described.
Closed circuit state in residual current circuit breaker shown in Figure 1, when flowing through unsymmetrical current in the circuit, 82 pairs of Zero-phase currents of zero phase sequence currenttransformer detect, and its current signal delivered to control circuit portion 83, when the numerical value of Zero-phase current surpassed setting, the electromagnet portion 87 in 83 pairs of leakage tripping devices of this control circuit portion 84 carried out excitation.
When plunger 88 because of the excitation of electromagnet portion 87 when the direction of arrow attracts, leading section with plunger 88 makes trip(ping) bar 91 rotate for middle mind-set clockwise direction with axle 92, with the shift fork holding section 91c of trip(ping) bar 91 the 3rd snap-latch piece 72c that card ends shift fork 72 is pushed simultaneously, and make roller 79 and card only shift fork 72 the 2nd snap-latch piece 72b engage releasing.That is, same as shown in Figure 3, make open-close mechanism section 69 do the tripping operation action.
Meanwhile, by as among Fig. 3 with removing the click-on mechanism that is constituted with the claw holding section 91b that is formed at the 89a of claw portion of leakage tripping the Show Button 89 1 ends and trip(ping) bar 91 shown in the chain-dotted line like that, then leakage tripping the Show Button 89 is shown in the chain-dotted line of Fig. 3, because of the elastic force of the Show Button spring 90 protrudes in the upper surface 41a of base 41, the situation after the expression electric leakage action.
Then, after having removed the electric leakage accident cause, handlebar 76 is rotated and when carrying out reset operation, then the support 89b to the Show Button 89 pushes the 2nd jut 76b of handlebar 76 with the homing action of open-close mechanism section 69 to clockwise direction (among Fig. 1).Utilize this to push, contend with the elastic force of the Show Button spring 90 and leakage tripping the Show Button 89 is descended, the claw holding section 91b of trip(ping) bar 91 utilizes the elastic force of trip(ping) bar spring 93 and the Show Button spring 90 and becomes the state that engages once more with the 89a of claw portion of leakage tripping the Show Button 89, finishes homing action.Therefore, residual current circuit breaker becomes off state shown in Figure 2.
Embodiment 2
Structure with regard to 2 utmost points, 2 elements of above-mentioned residual current circuit breaker is illustrated, and adopts the residual current circuit breaker of said structure, can constitute the structure of 2 utmost points, 1 element (switching mechanism is 2 utmost points, and only in a structure that has an overcurrent trip mechanism) simply.That is, as Figure 10 and shown in Figure 11, the part of the part of over current trip 60 and trip(ping) bar 98 is because by blocking, thus can take off them easily, and change other parts into.Therefore, as Figure 10 and shown in Figure 11, can obtain the structure that extremely goes up no over current trip and trip(ping) bar of side overleaf simply.
In addition, in the above-described embodiments, the size structure that size is suitable for 1 superfine product occasion in the type of the deciding through consultation Inturruptor for sub-line that the electric light distribution board uses is illustrated, but the present invention is not limited to the size of the type of the deciding through consultation Inturruptor for sub-line that the electric light distribution board uses, and can be adapted to all size.
Claims (10)
1. residual current circuit breaker, it is characterized in that having: be provided with power supply side terminal, an end produce electromagnetic force with the bimetallic of the portion of terminal combination of described power supply side terminal, by flowing through described bimetallic electric current fixed iron piece with the movable contact that is connected with the described bimetallic other end by the pliability conductor and they are by the portion of overcurrent trip mechanism of blocking;
Be provided with the load side terminal, be connected with described load side terminal by leading body and can be with the fixed contact therefor of described movable contact contact separation, be located at zero phase sequence currenttransformer on the described leading body, the output of described zero phase sequence currenttransformer detected and produce the control circuit portion of leakage tripping signal and the electromagnet portion of moving according to described leakage tripping signal and they are by the portion of leakage tripping mechanism of blocking; And,
The framework that described overcurrent trip portion of mechanism and portion of leakage tripping mechanism are held.
2. residual current circuit breaker, it is characterized in that having: be respectively equipped with the bimetallic of a pair of power supply side terminal, an end and the portion of terminal combination of described power supply side terminal, because of flowing through fixed iron piece that described bimetallic electric current produces electromagnetic force with the movable contact that is connected with the described bimetallic other end by the pliability conductor and they are by the portion of overcurrent trip mechanism of blocking;
Be provided with a pair of load side terminal, be connected with described load side terminal by leading body and can with a pair of fixed contact therefor of described movable contact contact separation, be located at the zero phase sequence currenttransformer on the described leading body, the output of described zero phase sequence currenttransformer is detected and produces the control circuit portion of leakage tripping signal, the electromagnet portion of moving according to described leakage tripping signal and make the leakage tripping display of corresponding actions with the action of described electromagnet portion, and they are by the portion of leakage tripping mechanism of blocking; And,
The framework that described overcurrent trip portion of mechanism and portion of leakage tripping mechanism are held.
3. residual current circuit breaker as claimed in claim 2, it is characterized in that, have: be provided with the manual operation handlebar, with the linkage of described manual operation with the action interlock of handlebar, be connected with described linkage and form the transverse arm that can embed described movable contact, in described a pair of fixed iron piece by the movable iron that electromagnetic force attracted of the fixed iron piece of a utmost point, the card that is produced the tripping operation action by the bimetallic driving of a described movable iron or a described utmost point side ends shift fork, the electromagnet portion of moving according to the leakage tripping signal produces the trip(ping) bar and the framework that is used for assembling these parts of tripping operation action when moving, and they are by the open-close mechanism section of blocking, and described open-close mechanism section is contained in the framework.
4. residual current circuit breaker as claimed in claim 2, it is characterized in that, have: be provided with in a pair of bimetallic the trip(ping) bar that forms the bimetallic by another utmost point side and drive, on the described trip(ping) bar by the movable iron of the electromagnetic attracting force of the fixed iron piece of another utmost point in case when driving by described bimetallic or attracting movable iron, forms by described fixed iron piece by described card end shift fork produce that tripping operation is moved and they by the trip(ping) bar portion of blocking, described trip(ping) bar portion is contained in the framework.
5. residual current circuit breaker as claimed in claim 2, it is characterized in that, have: be provided with the manual operation handlebar, with the linkage of described manual operation with the action interlock of handlebar, be connected with described linkage and form the transverse arm that can embed described movable contact, in described a pair of fixed iron piece by the movable iron that electromagnetic force attracted of the fixed iron piece of a utmost point, the card that is produced the tripping operation action by the bimetallic driving of a described movable iron or a described utmost point side ends shift fork, the electromagnet portion of moving according to the leakage tripping signal produces the trip(ping) bar and the framework that is used for assembling these parts of tripping operation action when moving, and they are by the open-close mechanism section of blocking, described open-close mechanism section is contained in the framework, also have: be provided with the trip(ping) bar that in a pair of bimetallic, forms by the bimetallic driving of another utmost point side, on the described trip(ping) bar by the movable iron of the electromagnetic attracting force of the fixed iron piece of another utmost point in case when driving by described bimetallic or attracting movable iron, forms by described fixed iron piece by described card end shift fork produce that tripping operation is moved and they by the trip(ping) bar portion of blocking, described trip(ping) bar portion is contained in the framework.
6. residual current circuit breaker as claimed in claim 1, it is characterized in that, its structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into described adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
7. residual current circuit breaker as claimed in claim 2, it is characterized in that, its structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into described adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
8. residual current circuit breaker as claimed in claim 2, it is characterized in that, have: be provided with the manual operation handlebar, with the linkage of described manual operation with the action interlock of handlebar, be connected with described linkage and form the transverse arm that can embed described movable contact, in described a pair of fixed iron piece by the movable iron that electromagnetic force attracted of the fixed iron piece of a utmost point, the card that is produced the tripping operation action by the bimetallic driving of a described movable iron or a described utmost point side ends shift fork, the electromagnet portion of moving according to the leakage tripping signal produces the trip(ping) bar and the framework that is used for assembling these parts of tripping operation action when moving, and they are by the open-close mechanism section of blocking, described open-close mechanism section is contained in the framework, in addition
The structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into described adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
9. RCCB as claimed in claim 2; It is characterized in that; Have: be provided with in a pair of bimetallic the trip(ping) bar that forms the bimetallic by another utmost point side and drive, producing that tripping operation move and they by the trip(ping) bar section of blocking in order to when being driven by described bimetallic or attracting movable iron by described fixed iron piece, forms by the described shift fork that locks by the movable iron of the electromagnetic attracting force of the fixed iron piece of another utmost point on the described trip(ping) bar; Described trip(ping) bar section is contained in the framework; In addition
The structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into described adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
10. residual current circuit breaker as claimed in claim 2, it is characterized in that, have: be provided with the manual operation handlebar, with the linkage of described manual operation with the action interlock of handlebar, be connected with described linkage and form the transverse arm that can embed described movable contact, in described a pair of fixed iron piece by the movable iron that electromagnetic force attracted of the fixed iron piece of a utmost point, the card that is produced the tripping operation action by the bimetallic driving of a described movable iron or a described utmost point side ends shift fork, the electromagnet portion of moving according to the leakage tripping signal produces the trip(ping) bar and the framework that is used for assembling these parts of tripping operation action when moving, and they are by the open-close mechanism section of blocking, described open-close mechanism section is contained in the framework, also have: be provided with the trip(ping) bar that in a pair of bimetallic, forms by the bimetallic driving of another utmost point side, end shift fork by described card and producing that tripping operation is moved and they are by the trip(ping) bar portion of blocking so that when driving by described bimetallic or attracting movable iron, forms by the movable iron of the electromagnetic attracting force of the fixed iron piece of another utmost point on the described trip(ping) bar by described fixed iron piece, described trip(ping) bar portion is contained in the framework, and
The structure of over current trip is, near fixing bimetallic portion of terminal is rotary with the adjustment screw, by being pressed into described adjustment screw to make the sagging portion of terminal that lancing forms from fixing bimetallic portion of terminal, or turn back to original position and make portion of terminal distortion, thereby the structure that can adjust bimetallic free-ended position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP097271/1997 | 1997-04-15 | ||
| JP9097271A JPH10289643A (en) | 1997-04-15 | 1997-04-15 | Earth leakage breaker |
| JP097271/97 | 1997-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1196565A CN1196565A (en) | 1998-10-21 |
| CN1061773C true CN1061773C (en) | 2001-02-07 |
Family
ID=14187875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106207A Expired - Fee Related CN1061773C (en) | 1997-04-15 | 1998-04-03 | Leakage circuit breaker |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH10289643A (en) |
| KR (1) | KR19980079889A (en) |
| CN (1) | CN1061773C (en) |
| ID (1) | ID20176A (en) |
| TW (1) | TW365012B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373689B (en) * | 2007-08-20 | 2011-05-18 | Ls产电株式会社 | Apparatus for auxiliary contact of circuit breaker |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101045406B1 (en) | 2006-11-10 | 2011-06-30 | 가와무라 일렉트릭 가부시키가이샤 | Circuit Breaker |
| JP4889555B2 (en) * | 2007-04-23 | 2012-03-07 | 三菱電機株式会社 | Circuit breaker |
| KR100845532B1 (en) * | 2008-01-29 | 2008-07-10 | 주식회사 대륙 | The trip device of earth leakage circuit braker |
| KR100896746B1 (en) | 2008-12-16 | 2009-05-11 | 주식회사 대륙 | Operating mechanism construction of earth leakage and current circuit breaker |
| WO2012039030A1 (en) * | 2010-09-22 | 2012-03-29 | パナソニック電工電路株式会社 | Switchgear |
| CN102094507A (en) * | 2010-12-03 | 2011-06-15 | 广东盈然木业有限公司 | Natural vegetable oil varnished floor board and manufacturing method thereof |
| WO2012119555A1 (en) * | 2011-03-09 | 2012-09-13 | 上海电科电器科技有限公司 | Circuit breaker for optimizing space allocation |
| CN102683130B (en) * | 2011-03-09 | 2016-03-23 | 上海电科电器科技有限公司 | Circuit breaker with optimized space allocation |
| JP6658360B2 (en) * | 2016-07-05 | 2020-03-04 | 三菱電機株式会社 | Earth leakage breaker |
| CN108807100B (en) * | 2017-05-04 | 2023-08-22 | 周思雨 | Miniature circuit breaker and automatic switching-on/off control device and method |
| CN108389763B (en) * | 2018-05-09 | 2023-10-31 | 佳一电气有限公司 | N-pole circuit breaker unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456493A (en) * | 1987-08-27 | 1989-03-03 | Matsushita Electric Ind Co Ltd | Voice recognition |
-
1997
- 1997-04-15 JP JP9097271A patent/JPH10289643A/en active Pending
-
1998
- 1998-01-23 TW TW087100905A patent/TW365012B/en active
- 1998-02-09 ID IDP980153A patent/ID20176A/en unknown
- 1998-03-03 KR KR1019980007115A patent/KR19980079889A/en not_active Application Discontinuation
- 1998-04-03 CN CN98106207A patent/CN1061773C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456493A (en) * | 1987-08-27 | 1989-03-03 | Matsushita Electric Ind Co Ltd | Voice recognition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373689B (en) * | 2007-08-20 | 2011-05-18 | Ls产电株式会社 | Apparatus for auxiliary contact of circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| ID20176A (en) | 1998-10-22 |
| CN1196565A (en) | 1998-10-21 |
| KR19980079889A (en) | 1998-11-25 |
| TW365012B (en) | 1999-07-21 |
| JPH10289643A (en) | 1998-10-27 |
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