CN104025241A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN104025241A CN104025241A CN201280065588.8A CN201280065588A CN104025241A CN 104025241 A CN104025241 A CN 104025241A CN 201280065588 A CN201280065588 A CN 201280065588A CN 104025241 A CN104025241 A CN 104025241A
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- Prior art keywords
- axle
- handle
- circuit
- breaker
- framework
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- 230000007246 mechanism Effects 0.000 abstract description 26
- 230000009471 action Effects 0.000 description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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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
-
- 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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
- H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
-
- 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
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The present invention yields a circuit breaker in which the uniformity of design between a wiring circuit breaker and an earth leakage breaker is ensured, and a switching mechanism is shared. The present invention is provided with: a circuit interrupter (27) provided near both contacts; a cross bar (13) for rotatably holding a movable contactor (24); a lower link (39) for driving the cross bar (13); a lever (36) that engages with an overcurrent tripper (50) and rotates when tripping occurs; an upper link (37) supported by the lever (36) and joined to the lower link (39) via a spring pin (38); a main spring (40) in which a driven side is joined to the spring pin (38); a frame (32) fixed to a housing; a handle arm (33) rotatably supported by the frame (32) and joined to the driving side of the main spring (40); a sub-handle arm (34) rotatably supported by the frame (32) and joined to the handle arm (33); and a handle (31) mounted on the sub-handle arm (34).
Description
Technical field
The present invention relates to the circuit-breakers such as Inturruptor for sub-line and residual current circuit breaker, specifically, relate to standardization, the sharing of open-close mechanism section.
Background technology
In circuit-breaker, a plurality of machines such as common spread configuration Inturruptor for sub-line and residual current circuit breaker, low price product and high-performance product during actual use, in recent years, advance the standardization of the overall dimension between machine from construction, the angle that connects.In addition, for product design, the handle position that particularly operates, the angle of exchanging from the installation of outward appearance and auxiliary equipment also wishes to unify between machine.
But, in residual current circuit breaker, be due to zero sequence converter or electronic loop unit, in high-performance product, be due to the contact equity of appending corresponding to high rupturing capacity, need larger space, so in order to make outline dimension standard, the maximum machine of need to take is determined interior layout as benchmark.
Thereby, known following Inturruptor for sub-line (for example, with reference to patent documentation 1), this Inturruptor for sub-line is on the unified basis for the identical size of the molded shell of the residual current circuit breaker identical with this Inturruptor for sub-line framework by the overall dimension of molded shell, the depth size of the bonding conductor that extend inner side from load side terminal to housing is shortened to shorter than the bonding conductor of the load side terminal of using described residual current circuit breaker, and correspondingly load side terminal is shifted to in the installation site of over current trip and switching mechanism, expand the shared space of arc-extinction device.
Patent documentation 1: TOHKEMY 2004-273339 communique
Summary of the invention
As mentioned above, in existing circuit-breaker, owing to shortening the length of the bonding conductor that load side terminal is connected with over current trip, and corresponding to this, load side terminal is shifted to in the installation site of over current trip and switching mechanism, so exist the position of operating grip also to shift to load side terminal, destroy the problem of auxiliary equipment interchangeability.
In addition, in patent documentation 1, disclose the set-up positions change of the handle portion in operating grip, the position that makes handle portion is identical technology generally relatively, but exist cannot sharing operating grip problem, in addition, if increased to the close amount of movement of the load side terminal of switching mechanism, rely on the change of the set-up positions of handle portion cannot guarantee the amount of movement of corresponding switching mechanism.And center of rotation when operating grip is connected, disconnected can be offset along with the movement of switching mechanism, so also there is the connection of operating grip, the problem that disconnection action has some setbacks.
The present invention proposes in order to solve above-mentioned problem, and its object is to obtain to guarantee the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker, and realizes the circuit-breaker of the sharing of open-close mechanism section.
Circuit-breaker involved in the present invention is by forming with lower member: movable contact, its at one end or two ends there is moving contact; Fixed contact, it contacts/leaves with above-mentioned moving contact; Rotor, it is supported by axle free to rotately, and keeps above-mentioned movable contact; Lower link, it drives this rotor; Lever, it engages with the chain shot of tripgear and rotates when tripping operation; Upper connecting rod, it is supported on this lever by axle, is combined and forms toggle link via spring catch with above-mentioned lower link; Main spring, its slave end 40b is combined with above-mentioned spring catch; And handle arms, it is combined with the driving side 40a of this main spring, the earth's axis free to rotate is supported on and is subject on fixing framework, in this circuit-breaker, assistant's shaft arm is set, this assistant's shaft arm is supported in said frame in the different some earth's axis free to rotate of the axle strong point from above-mentioned handle arms, and above-mentioned assistant's shaft arm and above-mentioned handle arms are utilized linkage component combination, on assistant's shaft arm, handle are installed.
The effect of invention
According to the present invention, assistant's shaft arm is set, mounting handle on this assistant's shaft arm, wherein, the strong point earth's axis free to rotate that this assistant's shaft arm is arranged on arc-extinction device side by the axle strong point than handle arms is supported in described framework, therefore can guarantee the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker, and realize the sharing of open-close mechanism section.
Accompanying drawing explanation
Fig. 1 means the side view cutaway drawing of the on-state of the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 2 means that the master of the tripped condition of the Inturruptor for sub-line that embodiments of the present invention 1 relate to looks cutaway view.
Fig. 3 means the exploded view of the open-close mechanism section of the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 4 means the end view of the lever of the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 5 means the side view cutaway drawing of the off-state of the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 6 means the side view cutaway drawing of the tripped condition of the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 7 means the exploded view of the open-close mechanism section of the residual current circuit breaker that embodiments of the present invention 2 relate to.
Fig. 8 means that the master of the tripped condition of the residual current circuit breaker that embodiments of the present invention 2 relate to looks cutaway view.
Fig. 9 means the side view cutaway drawing of the on-state of the residual current circuit breaker that embodiments of the present invention 2 relate to.
Figure 10 means the side view cutaway drawing of the off-state of the residual current circuit breaker that embodiments of the present invention 2 relate to.
Figure 11 means the side view cutaway drawing of the tripped condition of the residual current circuit breaker that embodiments of the present invention 2 relate to.
Embodiment
Execution mode 1
Fig. 1 to Fig. 6 means the figure of the circuit-breaker that present embodiment relates to.Fig. 1 means the side view cutaway drawing of on-state, Fig. 2 means that the master of on-state looks cutaway view, Fig. 3 means the exploded view of wanting portion of open-close mechanism section, (a) being end view, is (b) front view, and Fig. 4 means the figure of the lever of open-close mechanism section, (a) be oblique view, (b) be end view, Fig. 5 means the side view cutaway drawing of off-state, and Fig. 6 means the side view cutaway drawing of tripped condition.
In Fig. 1, circuit-breaker 101 uses framework 10 and forms, and this framework 10 is formed by the pedestal 11 that utilizes insulating material to form and cover body 12.(for example on pedestal 11, configure side by side each other the circuit breaker unit of each phase corresponding with being connected to number of poles on circuit, in the situation of 3 phases, be 3), on the top of central circuit breaker unit, configure the open-close mechanism section 30 with known elbow-bar mechanism.
Cover body 12 covers circuit breaker unit and the open-close mechanism section 30 of each phase on pedestal 11, and the operating grip 31 of open-close mechanism section 30 is outstanding from cover body 12.In addition, on cover body 12 can, in the mode of the internal configurations inner satellite device of circuit-breaker 101, upper outlet body 12a to be opened/closed being set.
In addition, the circuit breaker cell formation of each phase is mutually the same, and cross bar 13 to be to share in the circuit breaker unit in each phase, and the mode with the circuit breaker unit quadrature of each phase, is configured on pedestal 11.
Each circuit breaker unit of each phase has: power supply side terminal 20, and it is arranged on pedestal 11; Fixed contact 22, it is arranged on from power supply side terminal 20 and extends on the fixed contact therefor 21 arranging; Moving contact 23, itself and this fixed contact 22 contacts/separated; Movable contact 24, it is kept by cross bar 13 free to rotately, is provided with this moving contact 23 in one end of this movable contact 24; Over current trip 50, it is connected via the movable contact 24 of movable contact bracket 25 and this; And load side terminal 26, it is arranged on pedestal 11, and is connected with this over current trip 50.By fixed contact 22 and moving contact 23, formed the switching contact that circuit is opened and closed.Near fixed contact 22 and moving contact 23, be provided with arc-extinction device 27.If moving contact 23 contacts with fixed contact 22, the circuit between two terminals 20,26 is connected, and in addition, if moving contact 23 is separated with fixed contact 22, the circuit between two terminals 20,26 disconnects.
Cross bar 13 rotates centered by the 13a of its axle center by open-close mechanism section 30, is separately installed with the movable contact 24 in each circuit breaker unit of each phase.When cross bar 13 has carried out rotation centered by the 13a of its axle center, the movable contact 24 of each circuit breaker unit of each phase also rotates simultaneously, by the rotation of this movable contact 24, and moving contact 23 and fixed contact 22 contacts/separated.
In addition, over current trip 50 consists of following member: known relay portion 51, its detection of excessive current and short circuit current; Trip(ping) bar 52, it is driven by this relay portion 51; Chain shot spring 53, it carries out pretension to the clockwise direction on paper to this trip(ping) bar 52; And chain shot 54, its anticlockwise rotation is stoped by trip(ping) bar 52.
The following describes the structure of wanting the open-close mechanism section 30 of portion as of the present invention.As shown in Figure 1 and Figure 2, open-close mechanism section 30 is by following component unit: framework 32, and it is formed by pair of frames plate 32A respect to one another, 32B, and is fixed on pedestal 11; Handle arms 33, it is arranged on the inner side of this framework 32, and handle arms pivot 33a supports by the handle Bei Shaft support portion 32a earth's axis free to rotate arranging on framework 32; Assistant's shaft arm 34, it is arranged on the outside of framework 32, assistant's shaft arm pivot 34a supports by the auxiliary-handle arm axle support portion 32b earth's axis free to rotate of framework 32, and this assistant's shaft arm pivot 34a compares and is arranged on arc-extinction device 27 sides with the axle strong point of handle arms 33; Sliding pin 35 is linkage component, and it is driven by the sliding tray 34b arranging on this assistant's shaft arm 34, by assistant's shaft arm 34 and handle arms 33 combinations; And operating grip 31, it is arranged on assistant's shaft arm 34.In addition, because the auxiliary-handle arm axle support portion 32b of framework 32 is arranged on the outside of framework 32, so can not interfere with handle arms pivot 33a.
In addition, the inside of handle arms 33 consists of following parts: lever 36, and the chain shot 54 of itself and over current trip 50 locks, and by the first rotation axial region 36a, by the lever shaft support portion 32c axle of framework 32, is supported; The upper connecting rod 37 that link supports axle 37a is supported by these lever 36 axles; Lower link 39, it rotates cross bar 13 by engaging and form toggle link with connecting rod on this 37 via spring catch 38; And a pair of main spring 40, their slave end 40b tensions are separately arranged on spring catch 38, and driving side 40a tension is arranged on sliding pin 35.
In addition, " holding member " described in claims is above-mentioned cross bar 13, and " linkage component " is above-mentioned sliding pin 35.
Handle arms 33 forms roughly U font, so that two wrist is the circular-arc end 33a of forming of U font side, because the power of main spring 40 is pressed into the circular-arc recess arranging on framework 32, be handle arms shaft supporting part 32a, and the inner surface of frame plate 32A, the 32B of its rotary motion trace and framework 32 roughly become the same face.
Assistant's shaft arm 34 also forms roughly U font, so that the circular-arc recess that to form circular-arc end be assistant's shaft arm pivot 34a is pressed in the arranged outside of framework 32 due to the power of main spring 40 that two wrist is U font side is auxiliary-handle arm axle support portion 32b, and the outer surface of frame plate 32A, the 32B of its rotary motion trace and framework 32 roughly becomes the same face.
On the other hand, lever 36 as shown in Figure 3, for two wrist is rotated between frame plate 32A, 32B, form roughly U font, this rotation is by position the first rotation axial region 36a axle that extension laterally arranges substantially in parallel with being equivalent to the basal surface of U font is supported in the axis hole 32c arranging on framework 32 and is carried out.
Upper connecting rod 37 is by the first circular-arc recess 37a being articulated in from the outstanding the second axle part 36c arranging of side surface of lever 36, thereby in the gap being formed between framework 32 and lever 36, rotate, this gap is equivalent to axis hole 32c and by so-called flange, processes the width of the outstanding setting unit 32c1 obtaining.In addition, under on-state, the first rotation axial region 36a is because the power of main spring 40 is pressed into this outstanding setting unit 32c1.On this, connecting rod 37 also has three-arc shape recess, the first 39a of hole portion pivot joint respectively by this three-arc shape recess and lower link 39, be coupling in spring catch 38, thereby on these, connecting rod 37 and lower link 39 become the skeleton of so-called elbow-bar mechanism, as mentioned above, via spring catch 38, link.In addition, the 2nd 39b of hole portion is coupling in the cross bar pin in cross bar 13 interior configurations, thereby lower link 39 and cross bar 13 are linked.In addition, in this embodiment, be respectively that upper connecting rod 37 and handle arms 33, lever 36 are same, form roughly U font, lower link 39 is same with framework 32, forms pair of plate-shaped respect to one another, but certainly have more than, is defined in this shape.
The following describes the action of circuit-breaker 101.
First illustrate about from being switched to the manual operation of disconnection.
As shown in Figure 1, if operating grip 31 is operated, take assistant's shaft arm pivot 34a with assistant's shaft arm 34 of these operating grip 31 combinations is axle, to counterclockwise rotating.Now sliding pin 35 is driven by sliding tray 34b.On sliding pin 35, be combined with handle arms 3 and main spring 40, it is axle that handle arms 33 be take handle arms pivot 33a, to counterclockwise rotating.Along with the movement of sliding pin 35, main spring 40 centered by the slave end 40b with spring catch 40 combinations, the first 39a of hole portion of connecting rod 37 in driving side 40a process.Now, originally via spring catch 38 by main spring 40 upper connecting rod 37 to counter clockwise direction pretension centered by link supports axle 37a, because moving of the driving side 40a of above-mentioned main spring 40 becomes to clockwise direction by pretension, start to rotate.By the rotation of connecting rod on this 37, via the 1st 39a of hole portion of the lower link 39 of spring catch 38 combinations, be lifted.And the 2nd 39b of hole portion of lower link 39 is also lifted, so the cross bar 13 of combination therewith rotates counterclockwise, movable contact 24 rotates.Along with this rotates, moving contact 23 is separated with fixed contact 22, thereby becomes the off-state shown in Fig. 5.
Below illustrate from being disconnected to the manual operation of connection.
In Fig. 5, if handle 31 is operated, take assistant's shaft arm pivot 34a with assistant's shaft arm 34 of these operating grip 31 combinations is axle, to clockwise direction, rotates.Now sliding pin 35 is driven by sliding tray 34b.On sliding pin 35, be combined with handle arms 33 and main spring 40, it is axle that handle arms 33 be take handle arms pivot 33a, to clockwise direction, rotates.Along with the movement of sliding pin 35, main spring 40 centered by the slave end 40b with spring catch 38 combinations, the link supports axle 37a of connecting rod 37 in driving side 40a process.
Now, originally via spring catch 38 by main spring 40 centered by link supports axle 37a to clockwise direction by the upper connecting rod 37 of pretension, because moving of the driving side 40a of main spring 40 becomes to counterclockwise by pretension, start to rotate.By the rotation of connecting rod on this 37, via the 1st 39a of hole portion of the lower link 39 of spring catch 38 combinations, be depressed.And the 2nd 39b of hole portion of lower link 39 also reduces, thereby the cross bar 13 of combination therewith clockwise rotates, and movable contact 24 rotates.Along with this rotates, moving contact 23 contacts with fixed contact 22, thereby becomes the on-state shown in Fig. 1.
The following describes tripping operation action.
In Fig. 1, if because two 20,26 of terminals such as circuit abnormality become overcurrent condition, relay portion 51 actions, trip(ping) bar 52 is urged and rotates to counter clockwise direction.The now inhibition of the rotation of chain shot 54 is removed, and chain shot 54 starts to counterclockwise rotating.Then, the lever holding section 36b of lever 36 becomes free to rotate, starts to clockwise rotate centered by the first rotation axial region 36a.Along with this rotation, the link supports axle 37a of upper connecting rod 37 also moves, in the moment of having passed through the axis of main spring 40, from 38 pairs of spring catch, connecting rod 37 produces clockwise pretightning force, via spring catch 38, lower link 39 is lifted, thereby cross bar 13, movable contact 24 move successively, moving contact 23 is separated with fixed contact 22, becomes thus the tripped condition shown in Fig. 6.
From the tripped condition shown in Fig. 6, handle 31 is mobile to counter clockwise direction, thus assistant's shaft arm 34 rotates handle arms 33 via sliding pin 35, and by its lever holding section 36b, lever 36 returns in the counterclockwise direction, so become the off-state shown in Fig. 5.
According to present embodiment, by arranging, utilize the auxiliary-handle arm axle support portion 32b earth's axis free to rotate to be supported in the assistant's shaft arm 34 on framework 32, mounting handle 31 on this assistant's shaft arm 34, wherein, this auxiliary-handle arm axle support portion 32b compares and is arranged on arc-extinction device 27 sides with the handle arms pivot 33a of handle arms 33, so can guarantee the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker, and realize the sharing of open-close mechanism section 30.
In addition, handle 31 has handle arms fixed part 31a and assistant's shaft arm fixed part 31b, so use the handle identical with the situation that forms Inturruptor for sub-line also can form residual current circuit breaker.
In addition, by arranging, utilize the auxiliary-handle arm axle support portion 32b earth's axis free to rotate to be supported in the assistant's shaft arm 34 on framework 32, mounting handle 31 on this assistant's shaft arm 34, wherein, this auxiliary-handle arm axle support portion 32b compares and is arranged on arc-extinction device 27 sides with the handle arms pivot 33a of handle arms 33, thereby load side terminal can be shifted to in the installation site of cross bar 13, movable contact 24 and fixed contact therefor 21, expand the shared space of arc-extinction device, so can improve opening performance.
In addition, assistant's shaft arm 34 removably links with the sliding tray 34b being arranged in handle arms 33 by sliding pin 35, so can easily form residual current circuit breaker.
In addition, assistant's shaft arm 34 is supported by the auxiliary-handle arm axle support portion 32b earth's axis free to rotate, and be arranged on the outside of framework 32, therefore not decomposing framework 32 also can dismantle this assistant's shaft arm 34, in addition, on handle 31, be provided with fixed part 31a, the 31b of assistant's shaft arm 34, and on handle 31, be also provided with the fixed part 31c of handle arms 33,31d, therefore, handle 31 can corresponding two kinds of specifications, the further standardization of propulsive element.
In addition, the linkage component that links assistant's shaft arm 34 and handle arms 33 is formed to the pin of the drum as shown in sliding pin 3, carry out via sliding tray 34b with the link of assistant's shaft arm 34, therefore can simplify component shape and cut down number of components.
In addition, on sliding pin 35, directly engage the hook portion of main spring 40, therefore can simplify the top surface shape of handle arms 33, improve the sliding of the holding section of main spring 40, improve the durability of open-close mechanism section.
In addition, in the present embodiment, show the example in one end of movable contact with single deenergizing circuit breaker of moving contact, if but had in the double break circuit-breaker of moving contact at the two ends of movable contact, also be configured to assistant's shaft arm is set, setting operation handle on assistant's shaft arm, can realize same effect.
Execution mode 2
In execution mode 1, the situation that forms Inturruptor for sub-line has been described, in the present embodiment, illustrate and assistant shaft arm and sliding pin are pulled down and formed the situation of electric leakage use circuit breaker.
Fig. 7 to Figure 11 represents the circuit-breaker as residual current circuit breaker that present embodiment relates to.Fig. 7 means the side view cutaway drawing of on-state, Fig. 8 means that the master of on-state looks cutaway view, Fig. 9 means the exploded view of wanting portion of open-close mechanism section, (a) be end view, (b) be front view, Figure 10 means the side view cutaway drawing of off-state, and Figure 11 means the side view cutaway drawing of tripped condition.
Fig. 7, Figure 10, Figure 11 distinguish corresponding figure with Fig. 1, Fig. 5, Fig. 6.
The residual current circuit breaker 102 of present embodiment is as Fig. 8, shown in Fig. 9, from the illustrated circuit-breaker 101 of execution mode 1, pull down assistant's shaft arm 34 and sliding pin 35, direct mounting handle 31 in handle arms 33, and, by cross bar 13, fixed contact therefor 21, movable contact 24, over current trip 50 to mains side (right side on paper) according to following distance moving, , assistant's shaft arm pivot 34a is distance poor of the horizontal direction of position and handle arms pivot 33a once, in the clearance spaces forming in load-side (left side on paper) (the A size of Fig. 7 and the B size of Fig. 1 poor), dispose the detection of electrical leakage associated members 60 such as zero sequence converter.In addition, the action under each state of Fig. 7, Figure 10, Figure 11, except from handle 31 driving handle arms 33, identical with execution mode 1, so description thereof is omitted.
In Fig. 7, circuit-breaker 102 has: zero sequence converter 60a, and it detects the leakage current of alternating current circuit; Earth detector 60b, it is connected with this zero sequence converter 60a, corresponding to the output signal driving over current trip 50 of zero sequence converter 60a; Movable contact 24, it at one end has moving contact 23; Fixed contact 22, itself and this moving contact 23 contacts/separated; Arc-extinction device 27, it is arranged near two contacts 22,23; As the cross bar 13 of holding member, it keeps movable contact 24, and free to rotate by axle, is supported; Lower link 39, it drives this cross bar 13; Lever 36, it engages with the chain shot 54 of over current trip 50 and rotates when tripping operation; Upper connecting rod 37, its axle is supported on this lever 36, via spring catch 38 and lower link 39 combinations; Main spring 40, its slave end 40b and spring catch 38 combinations; Framework 32, it is fixed in the framework of this circuit-breaker 102; Handle arms 33, it is combined with the driving side 40a of main spring 40, and supports by the 1st axle strong point 33a earth's axis free to rotate arranging on framework 32; And handle 31, it is arranged in this handle arms 33.
In addition, as shown in Figure 9, framework 32 has the 2nd axle strong point 32b that is arranged on arc-extinction device 27 sides than the 1st axle strong point.
In addition, in present embodiment, show in one end of movable contact and there is the example of single deenergizing circuit breaker of moving contact, but also can be applied to have at the two ends of movable contact the double break circuit-breaker of moving contact.
The following describes the action of circuit-breaker 102.
First, illustrate from being switched to the manual operation of disconnection.
As shown in Figure 7, if operating grip 31 is operated, take handle arms pivot 33a with the handle arms 33 of these operating grip 31 combinations is axle, to counterclockwise rotating.Handle arms 33 combines with the driving side 40a of main spring 40, main spring 40 centered by the slave end 40b with spring catch 40 combinations, the 1st 39a of hole portion of connecting rod 37 in driving side 40a process.Now, originally via spring catch 38 by main spring 40 upper connecting rod 37 to counter clockwise direction pretension centered by link supports axle 37a, due to the movement of the driving side 40a of above-mentioned main spring 40, and become to clockwise direction by pretension, start to rotate.Due to the rotation of connecting rod on this 37, via the 1st 39a of hole portion of the lower link 39 of spring catch 38 combinations, be lifted.And the 2nd 39b of hole portion of lower link 39 is also lifted, thereby the cross bar 13 of combination therewith rotates counterclockwise, and movable contact 24 rotates.Along with this rotates, moving contact 23 is separated with fixed contact 22, thereby becomes the off-state shown in Fig. 5.
Below illustrate from being disconnected to the manual operation of connection.
In Figure 10, if handle 31 is operated, take handle arms pivot 33a with the handle arms 33 of these handle 31 combinations is axle, to clockwise direction, rotates.Along with the rotation of handle arms 33, main spring 40 centered by the slave end 40b with spring catch 38 combinations, the link supports axle 37a of connecting rod 37 in driving side 40a process.
Now, originally via spring catch 38 by main spring 40 upper connecting rod 37 to clockwise direction pretension centered by link supports axle 37a, due to the movement of the driving side 40a of main spring 40, become to counterclockwise by pretension, start to rotate.Due to the rotation of connecting rod on this 37, via the 1st 39a of hole portion of the lower link 39 of spring catch 38 combinations, be depressed.And the 2nd 39b of hole portion of lower link 39 also reduces, thereby the cross bar 13 of combination therewith clockwise rotates, and movable contact 24 rotates.Along with this rotates, moving contact 23 contacts with fixed contact 22, thereby becomes the on-state shown in Fig. 1.
The following describes tripping operation action.
In Fig. 7, if because two 20,26 of terminals such as circuit abnormality become overcurrent condition and 51 actions of relay portion, or 60a detects leakage current by zero sequence converter, earth detector 60b action, trip(ping) bar 52 is urged and rotates to counter clockwise direction.The now inhibition of the rotation of chain shot 54 is removed, and chain shot 54 starts to counterclockwise rotating.Then, the lever holding section 36b of lever 36 becomes and can rotate freely, and starts, centered by the first rotation axial region 36a, to clockwise rotate.Along with this rotation, the link supports axle 37a of upper connecting rod 37 also moves, in the moment of having passed through the axis of main spring 40, from 38 pairs of spring catch, connecting rod 37 produces to clockwise pretightning force, via spring catch 38, lower link 39 is lifted, thereby cross bar 13, movable contact 24 move successively, moving contact 23 is separated with fixed contact 22, becomes thus the tripped condition shown in Figure 11.
From the tripped condition shown in Figure 11, handle 31 is mobile to counter clockwise direction, thus handle arms 33 rotations by lever holding section 36b, return to lever 36, so become the off-state shown in Figure 10 in the counterclockwise direction.
According to the residual current circuit breaker of present embodiment, by auxiliary-handle arm axle support portion 32b is arranged on framework 32, in handle arms 33, mounting handle 31, wherein, this auxiliary-handle arm axle support portion 32b compares and is arranged on arc-extinction device 27 sides with handle arms pivot 33a, so can guarantee the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker, and realize the sharing of open-close mechanism section 30.
In addition, framework 32 has auxiliary-handle arm axle support portion 32b, this auxiliary-handle arm axle support portion 32b compares and is arranged on arc-extinction device 27 sides with the handle arms pivot 33a of the axle strong point as handle arms 33, so by appending assistant's shaft arm 34 and sliding pin 35, thereby can, by mechanism's component parts to moving with arc-extinction device 27 opposition sides, suppress the generation of clearance spaces.And, can adopt larger arc chute 27 as shown in Figure 1.
Narrated in the above description circuit-breaker, but certainly can utilize in all this shutters, even if carry out tiny change, also can not depart from the scope of the present invention.
The explanation of label
13 cross bars,
22 fixed contacts,
23 moving contacts,
24 movable contacts,
25 movable piece brackets
27 arc-extinction devices,
31 handles,
32 frameworks,
32a handle arms shaft supporting part
32b auxiliary-handle arm axle support portion
33 handle arms,
33a handle arms pivot,
34 assistant's shaft arms,
Assistant's 34a shaft arm pivot
34b sliding tray
35 sliding pins,
36 levers,
Connecting rod on 37,
37a link supports axle
38 spring catch,
39 lower links,
39a the 1st hole portion,
39b the 2nd hole portion,
40 main springs,
50 over current trips
51 relay portions,
52 trip(ping) bars,
53 chain shot springs,
54 chain shots,
60 detection of electrical leakage associated members,
101 circuit-breakers.
Claims (6)
1. a circuit-breaker, is characterized in that, has:
Movable contact, its at one end or two ends there is moving contact;
Fixed contact, itself and this moving contact contact/separated;
Arc-extinction device, it is arranged near described two contacts;
Holding member, it is supported by axle free to rotately, and keeps described movable contact;
Lower link, it drives this holding member;
Lever, it engages with the chain shot of over current trip and rotates when tripping operation;
Upper connecting rod, it is supported on this lever by axle, via spring catch, is combined with described lower link;
Main spring, its slave end is combined with described spring catch;
Framework, it is fixed in the framework of this circuit-breaker;
Handle arms, it is combined with the driving side of described main spring, by the 1st axle strong point earth's axis free to rotate arranging on described framework, is supported;
Assistant's shaft arm, itself and described handle arms link, and by the 2nd axle strong point earth's axis free to rotate arranging on described framework, are supported; And
Handle, it is arranged on this assistant's shaft arm.
2. circuit-breaker according to claim 1, is characterized in that, described the 2nd axle strong point is compared and is arranged on described arc-extinction device side with described the 1st axle strong point.
3. circuit-breaker according to claim 2, is characterized in that,
This circuit-breaker has the linkage component that described assistant's shaft arm is removably linked to described handle arms, and described handle has handle arms fixed part and assistant's shaft arm fixed part.
4. according to the circuit-breaker described in claim 2 or 3, it is characterized in that, described assistant's shaft arm has the sliding tray described handle arms being linked movably by described linkage component.
5. circuit-breaker according to claim 4, is characterized in that, described linkage component is combined with the driving side of described main spring, and described main spring is combined via described linkage component with described handle arms.
6. a circuit-breaker, is characterized in that, has:
Zero sequence converter, its leakage current to circuit detects;
Earth detector, it is connected with this zero sequence converter, corresponding to the output signal of described zero sequence converter, drives described over current trip;
Movable contact, it is at one end or two ends tool moving contact;
Fixed contact, itself and this moving contact contact/separated;
Arc-extinction device, it is arranged near described two contacts;
Holding member, it is supported by axle free to rotately, and keeps described movable contact;
Lower link, it drives this holding member;
Lever, it engages with the chain shot of described over current trip and rotates when tripping operation;
Upper connecting rod, it is supported on this lever by axle, via spring catch, is combined with described lower link;
Main spring, its slave end is combined with described spring catch;
Framework, it is fixed in the framework of this circuit-breaker;
Handle arms, it is combined with the driving side of described main spring, by the 1st axle strong point earth's axis free to rotate arranging on described framework, is supported; And
Handle, it is arranged in this handle arms,
Described framework has the 2nd axle strong point, and the 2nd axle strong point is compared and is arranged on arc-extinction device side with described the 1st axle strong point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/006513 WO2014057517A1 (en) | 2012-10-11 | 2012-10-11 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104025241A true CN104025241A (en) | 2014-09-03 |
| CN104025241B CN104025241B (en) | 2015-12-09 |
Family
ID=50477011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280065588.8A Active CN104025241B (en) | 2012-10-11 | 2012-10-11 | Circuit-breaker |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5549794B1 (en) |
| KR (1) | KR101680492B1 (en) |
| CN (1) | CN104025241B (en) |
| WO (1) | WO2014057517A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556275A (en) * | 2018-05-31 | 2019-12-10 | 三菱电机株式会社 | Circuit breaker |
| CN111354610A (en) * | 2015-05-18 | 2020-06-30 | 吉加瓦有限责任公司 | Fuse device |
| US11239038B2 (en) | 2015-05-18 | 2022-02-01 | Gigavac, Llc | Mechanical fuse device |
| US11387061B2 (en) | 2015-05-18 | 2022-07-12 | Gigavac, Llc | Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features |
| US11443910B2 (en) | 2019-09-27 | 2022-09-13 | Gigavac, Llc | Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810191A (en) * | 2015-03-26 | 2015-07-29 | 安徽智瑞电气有限公司 | Air switch |
| KR20180099330A (en) | 2017-02-28 | 2018-09-05 | 엘에스산전 주식회사 | Molded Case Circuit Breaker with Interlock for Contacts |
| CN107968025B (en) * | 2017-12-23 | 2021-03-09 | 浙江正泰电器股份有限公司 | Compact automatic closing circuit breaker |
| KR102050912B1 (en) * | 2019-09-20 | 2019-12-02 | 제일전기공업 주식회사 | switch |
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| JPH0581995A (en) * | 1991-09-20 | 1993-04-02 | Hitachi Ltd | Breaker |
| JPH06325680A (en) * | 1993-04-07 | 1994-11-25 | Merlin Gerin | Multipolar breaker |
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| WO2012081105A1 (en) * | 2010-12-16 | 2012-06-21 | 三菱電機株式会社 | Circuit breaker |
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| JP4147347B2 (en) * | 2003-03-11 | 2008-09-10 | 富士電機機器制御株式会社 | Circuit breaker for wiring |
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2012
- 2012-10-11 JP JP2014512212A patent/JP5549794B1/en active Active
- 2012-10-11 WO PCT/JP2012/006513 patent/WO2014057517A1/en active Application Filing
- 2012-10-11 CN CN201280065588.8A patent/CN104025241B/en active Active
- 2012-10-11 KR KR1020157001606A patent/KR101680492B1/en active IP Right Grant
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|---|---|---|---|---|
| JPH0574316A (en) * | 1990-12-11 | 1993-03-26 | Hitachi Ltd | Circuit breaker |
| JPH0581995A (en) * | 1991-09-20 | 1993-04-02 | Hitachi Ltd | Breaker |
| JPH06325680A (en) * | 1993-04-07 | 1994-11-25 | Merlin Gerin | Multipolar breaker |
| JP2009245731A (en) * | 2008-03-31 | 2009-10-22 | Mitsubishi Electric Corp | Circuit breaker |
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| WO2012081105A1 (en) * | 2010-12-16 | 2012-06-21 | 三菱電機株式会社 | Circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111354610A (en) * | 2015-05-18 | 2020-06-30 | 吉加瓦有限责任公司 | Fuse device |
| US11239038B2 (en) | 2015-05-18 | 2022-02-01 | Gigavac, Llc | Mechanical fuse device |
| US11387061B2 (en) | 2015-05-18 | 2022-07-12 | Gigavac, Llc | Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features |
| CN110556275A (en) * | 2018-05-31 | 2019-12-10 | 三菱电机株式会社 | Circuit breaker |
| CN110556275B (en) * | 2018-05-31 | 2023-01-10 | 三菱电机株式会社 | Circuit breaker |
| US11443910B2 (en) | 2019-09-27 | 2022-09-13 | Gigavac, Llc | Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104025241B (en) | 2015-12-09 |
| KR20150020709A (en) | 2015-02-26 |
| WO2014057517A1 (en) | 2014-04-17 |
| JP5549794B1 (en) | 2014-07-16 |
| JPWO2014057517A1 (en) | 2016-08-25 |
| KR101680492B1 (en) | 2016-11-28 |
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