CN104025241B - Circuit-breaker - Google Patents
Circuit-breaker Download PDFInfo
- Publication number
- CN104025241B CN104025241B CN201280065588.8A CN201280065588A CN104025241B CN 104025241 B CN104025241 B CN 104025241B CN 201280065588 A CN201280065588 A CN 201280065588A CN 104025241 B CN104025241 B CN 104025241B
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- Prior art keywords
- circuit
- handle
- breaker
- framework
- assistant
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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
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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
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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
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance 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 unbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
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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
- H01H71/50—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
Abstract
The present invention obtains a kind of circuit-breaker, and the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker guaranteed by this circuit-breaker, realizes the sharing of open-close mechanism section.Have: arc-extinction device (27), it is arranged on two near contacts; Cross bar (13), it keeps movable contact (24) rotatably; Lower link (39), it drives cross bar (13); Lever (36), it engages with over current trip (50) and rotates when tripping; Upper connecting rod (37), its axle is supported on lever (36), combines via spring catch (38) and lower link (39); Main spring (40), its slave end and spring catch (38) combine; Framework (32), it is fixed in framework; Handle arms (33), it is pivotally supported on framework (32) rotatably, is combined with the driving side of main spring (40); Assistant's shaft arm (34), it is pivotally supported on framework (32) rotatably, links with handle arms (33); Handle (31), it is arranged on assistant's shaft arm (34).
Description
Technical field
The present invention relates to the circuit-breaker such as Inturruptor for sub-line and residual current circuit breaker, specifically, relate to the standardization of open-close mechanism section, sharing.
Background technology
In circuit-breaker, multiple machine such as usual spread configuration Inturruptor for sub-line and residual current circuit breaker, low price product and high-performance product during actual use, in recent years, advances the standardization of the overall dimension between machine from the angle of construction, connection.In addition, for product design, particularly carry out the handle position that operates, the angle of exchanging from the installation of outward appearance and auxiliary equipment also wishes to unify between machine.
But, be due to zero sequence converter or electronic loop unit in residual current circuit breaker, be that additional contact is reciprocity owing to corresponding to high rupturing capacity in high-performance product, needing larger space, so in order to make outline dimension standard, needing with maximum machine for benchmark determination interior layout.
Thus, known following Inturruptor for sub-line (such as, with reference to patent documentation 1), this Inturruptor for sub-line is on the basis of the size that the unification of the overall dimension of molded shell is identical for the molded shell of the residual current circuit breaker identical with this Inturruptor for sub-line framework, the depth size of the bonding conductor extended from load side terminal to case inside is shortened to shorter than the bonding conductor of the load side terminal used in described residual current circuit breaker, and correspondingly load side terminal is shifted in the installation site of over current trip and switching mechanism, expand the space shared by arc-extinction device.
Patent documentation 1: Japanese Unexamined Patent Publication 2004-273339 publication
Summary of the invention
As mentioned above, in existing circuit-breaker, owing to shortening the length of bonding conductor load side terminal be connected with over current trip, and correspond to this, load side terminal is shifted in the installation site of over current trip and switching mechanism, so load side terminal is also shifted in the position that there is operating grip, destroy the problem of auxiliary equipment interchangeability.
In addition, in patent documentation 1, disclose and the set-up positions of the handle portion in operating grip is changed, make the technology that the position of handle portion is relatively generally identical, but existing cannot the problem of sharing operating grip, in addition, if increased to the amount of movement that the load side terminal of switching mechanism is close, then the change of the set-up positions of handle portion is relied on cannot to guarantee the amount of movement of corresponding switching mechanism.Further, center of rotation during operating grip on-off can be offset along with the movement of switching mechanism, so the problem that the on-off action that also there is operating grip has some setbacks.
The present invention proposes to solve above-mentioned problem, its object is to the uniformity obtaining the appearance design can guaranteeing 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 formed by with lower component: movable contact, its at one end or two ends there is moving contact; Fixed contact, itself and above-mentioned movable contact contacts/leave; Rotor, it is supported by axle rotatably, 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; Upper connecting rod, it is pivotally supported on this lever, 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 the framework fixed, in this circuit-breaker, assistant's shaft arm is set, this assistant's shaft arm is supported in said frame in the some earth's axis free to rotate different from the axle strong point of above-mentioned handle arms, and above-mentioned assistant's shaft arm and above-mentioned handle arms utilize linkage component to combine, and assistant's shaft arm is provided with handle.
The effect of invention
According to the present invention, assistant's shaft arm is set, mounting handle on this assistant's shaft arm, wherein, this assistant's shaft arm is supported in described framework by the strong point earth's axis free to rotate being arranged on arc-extinction device side than the axle strong point of handle arms, therefore, it is possible to 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 is the side view cutaway drawing of the on-state representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 2 is the front sectional view of the on-state representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 3 is the exploded view of the open-close mechanism section representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 4 is the end view of the lever representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 5 is the side view cutaway drawing of the off-state representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 6 is the side view cutaway drawing of the tripped condition representing the Inturruptor for sub-line that embodiments of the present invention 1 relate to.
Fig. 7 is the side view cutaway drawing of the on-state representing the residual current circuit breaker that embodiments of the present invention 2 relate to.
Fig. 8 is the front sectional view of the tripped condition representing the residual current circuit breaker that embodiments of the present invention 2 relate to.
Fig. 9 is the exploded view of the open-close mechanism section representing the residual current circuit breaker that embodiments of the present invention 2 relate to.
Figure 10 is the side view cutaway drawing of the off-state representing the residual current circuit breaker that embodiments of the present invention 2 relate to.
Figure 11 is the side view cutaway drawing of the tripped condition representing the residual current circuit breaker that embodiments of the present invention 2 relate to.
Embodiment
Execution mode 1
Fig. 1 to Fig. 6 is the figure representing circuit-breaker of the present embodiment.Fig. 1 is the side view cutaway drawing representing on-state, Fig. 2 is the front sectional view representing on-state, Fig. 3 is the exploded view of the important part representing open-close mechanism section, a () is end view, (b) is front view, and Fig. 4 is the figure of the lever representing open-close mechanism section, a () is oblique view, b () is end view, Fig. 5 is the side view cutaway drawing representing off-state, and Fig. 6 is the side view cutaway drawing representing tripped condition.
In FIG, circuit-breaker 101 uses framework 10 and forms, and this framework 10 is formed by the pedestal 11 utilizing insulating material to be formed and cover body 12.Configure the circuit breaker unit of each phase corresponding with the number of poles be connected on circuit on the base 11 parallel to each other (such as, 3 when 3 phase), there is in the configuration of the top of the circuit breaker unit of central authorities the open-close mechanism section 30 of 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 given prominence to from cover body 12.In addition, on cover body 12 so that in the mode of the internal configurations inner satellite device of circuit-breaker 101, upper outlet body 12a to be opened/closed can be arranged.
In addition, the circuit breaker unit of each phase is configured to mutually the same, and cross bar 13 to share in the circuit breaker unit of each phase, and the mode orthogonal with the circuit breaker unit of each phase, configuration on the base 11.
Each circuit breaker unit of each phase has: power supply side terminal 20, and it is arranged on the base 11; Fixed contact 22, it is arranged on the fixed contact therefor 21 that power supply side terminal 20 is extended; Moving contact 23, it contacts with this fixed contact 22/is separated; Movable contact 24, it is kept by cross bar 13 rotatably, is provided with this moving contact 23 in one end of this movable contact 24; Over current trip 50, it is connected with this movable contact 24 via movable contact bracket 25; And load side terminal 26, it is arranged on the base 11, and is connected with this over current trip 50.The opening and closing contact of circuit being carried out to opening and closing is formed by fixed contact 22 and moving contact 23.Arc-extinction device 27 is provided with near fixed contact 22 and moving contact 23.If moving contact 23 contacts with fixed contact 22, then the circuit ON between two terminals 20,26, in addition, if moving contact 23 is separated with fixed contact 22, then the circuit between two terminals 20,26 disconnects.
Cross bar 13 is rotated 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 is also rotated simultaneously, and by the rotation of this movable contact 24, moving contact 23 contacts with fixed contact 22/is separated.
In addition, over current trip 50 is made up of following component: 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 the open-close mechanism section 30 as important part 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, 32B respect to one another, and fixes on the base 11; Handle arms 33, it is arranged on the inner side of this framework 32, and handle arms pivot 33a is supported by the handle arm Shaft support portion 32a earth's axis free to rotate arranged on framework 32; Assistant's shaft arm 34, it is arranged on the outside of framework 32, assistant's shaft arm pivot 34a is supported by the auxiliary-handle arm axle support portion 32b of framework 32 earth's axis free to rotate, and this assistant's shaft arm pivot 34a is arranged on arc-extinction device 27 side compared with the axle strong point of handle arms 33; Sliding pin 35 i.e. linkage component, it is driven by the sliding tray 34b arranged on this assistant's shaft arm 34, assistant's shaft arm 34 and handle arms 33 is combined; And operating grip 31, it is arranged on assistant's shaft arm 34.In addition, the auxiliary-handle arm axle support portion 32b due to 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 is made up of following parts: lever 36, and the chain shot 54 of itself and over current trip 50 engages, and is supported by the lever shaft support portion 32c axle of framework 32 by the first rotation axis portion 36a; The upper connecting rod 37 that link supports axle 37a is supported by this lever 36 axle; Lower link 39, it, by engaging with connecting rod on this 37 via spring catch 38 and forming toggle link, makes cross bar 13 rotate; And a pair main spring 40, they separately slave end 40b tension be arranged on spring catch 38, driving side 40a tension be 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 is formed as roughly U-shaped, with the arc-shaped recess and handle arms shaft supporting part 32a that make the end 33a being formed as arc-shaped of two wrist and U-shaped side arrange on framework 32 because the power of main spring 40 is pressed into, and the inner surface of frame plate 32A, 32B of its rotary motion trace and framework 32 roughly becomes the same face.
Assistant's shaft arm 34 is also formed as roughly U-shaped, to make the end being formed as arc-shaped of two wrist and U-shaped side and assistant's shaft arm pivot 34a be pressed at the arc-shaped recess of the arranged outside of framework 32 and auxiliary-handle arm axle support portion 32b due to the power of main spring 40, and the outer surface of frame plate 32A, 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, rotate between frame plate 32A, 32B to make two wrist, be formed as roughly U-shaped, this rotation is undertaken by being supported in the axis hole 32c arranged on framework 32 by the first rotation axis portion 36a axle extended laterally substantially in parallel with the position of the basal surface being equivalent to U-shaped.
Upper connecting rod 37 is by being articulated in by the first arc-shaped recess 37a from the projecting the second axle part 36c of the side surface of lever 36, thus rotate being formed in the gap between framework 32 and lever 36, this gap is equivalent to axis hole 32c processes the projecting portion 32c1 obtained width by so-called flange.In addition, in an on state, the first rotation axis portion 36a is pressed into this projecting portion 32c1 due to the power of main spring 40.On this, connecting rod 37 also has three-arc shape recess, by the first hole portion 39a pivot joint respectively of this three-arc shape recess and lower link 39, be coupling in spring catch 38, thus on these, connecting rod 37 and lower link 39 become the skeleton of so-called elbow-bar mechanism, as mentioned above, link via spring catch 38.In addition, the 2nd hole portion 39b is coupling in the cross bar pin of configuration in cross bar 13, thus lower link 39 and cross bar 13 are linked.In addition, in this embodiment, be upper connecting rod 37 respectively same with handle arms 33, lever 36, be formed as roughly U-shaped, lower link 39 is same with framework 32, is formed as pair of plate-shaped respect to one another, but certainly has more than and be defined in this shape.
The following describes the action of circuit-breaker 101.
First illustrate about from the manual operation being switched to disconnection.
As shown in Figure 1, if operated operating grip 31, then the assistant's shaft arm 34 be combined with this operating grip 31, rotates for axle counterclockwise with assistant's shaft arm pivot 34a.Now sliding pin 35 is driven by sliding tray 34b.Sliding pin 35 is combined with handle arms 3 and main spring 40, and handle arms 33, is rotated for axle counterclockwise with handle arms pivot 33a.Along with the movement of sliding pin 35, main spring 40 is centered by the slave end 40b be combined with spring catch 40, and driving side 40a is through the first hole portion 39a of upper connecting rod 37.Now, originally via the upper connecting rod 37 of spring catch 38 by main spring 40 pretension counterclockwise centered by link supports axle 37a, become clockwise by pretension due to the moving of driving side 40a of above-mentioned main spring 40, start to rotate.By the rotation of connecting rod on this 37, the 1st hole portion 39a of the lower link 39 combined via spring catch 38 is lifted.And the 2nd hole portion 39b of lower link 39 is also lifted, so the cross bar 13 combined therewith rotates counterclockwise, movable contact 24 is rotated.Along with this rotation, moving contact 23 is separated with fixed contact 22, thus becomes the off-state shown in Fig. 5.
Manual operation from being disconnected to connection is below described.
In Figure 5, if operated handle 31, then the assistant's shaft arm 34 be combined with this operating grip 31, rotates for axle clockwise with assistant's shaft arm pivot 34a.Now sliding pin 35 is driven by sliding tray 34b.Sliding pin 35 is combined with handle arms 33 and main spring 40, and handle arms 33, is rotated for axle clockwise with handle arms pivot 33a.Along with the movement of sliding pin 35, main spring 40 is centered by the slave end 40b be combined with spring catch 38, and driving side 40a is through the link supports axle 37a of upper connecting rod 37.
Now, originally via spring catch 38 by main spring 40 centered by link supports axle 37a clockwise by the upper connecting rod 37 of pretension, become counterclockwise by pretension due to the moving of driving side 40a of main spring 40, start to rotate.By the rotation of connecting rod on this 37, the 1st hole portion 39a of the lower link 39 combined via spring catch 38 is depressed.And the 2nd hole portion 39b of lower link 39 also reduces, thus the cross bar 13 combined therewith rotates clockwise, and movable contact 24 is rotated.Along with this rotation, moving contact 23 contacts with fixed contact 22, thus becomes the on-state shown in Fig. 1.
The following describes trip operation.
In FIG, if owing to becoming overcurrent condition between two terminals 20,26 such as circuit abnormality, then relay portion 51 action, trip(ping) bar 52 is pushed and rotates counterclockwise.The suppression of the now rotation of chain shot 54 is removed, and chain shot 54 starts to rotate counterclockwise.Then, the lever holding section 36b of lever 36 becomes free to rotate, starts to rotate clockwise centered by the first rotation axis portion 36a.Along with this rotation, the link supports axle 37a of upper connecting rod 37 also moves, when have passed the axis of main spring 40, from spring catch 38, clockwise pretightning force is produced to upper connecting rod 37, via spring catch 38, lower link 39 is lifted, thus cross bar 13, movable contact 24 action successively, moving contact 23 is separated with fixed contact 22, becomes the tripped condition shown in Fig. 6 thus.
From the tripped condition shown in Fig. 6, moved counterclockwise by handle 31, thus assistant's shaft arm 34 makes handle arms 33 rotate via sliding pin 35, by its lever holding section 36b, lever 36 returns in the counterclockwise direction, so become the off-state shown in Fig. 5.
According to the present embodiment, the auxiliary-handle arm axle support portion 32b earth's axis free to rotate is utilized to be supported in assistant's shaft arm 34 on framework 32 by arranging, mounting handle 31 on this assistant's shaft arm 34, wherein, this auxiliary-handle arm axle support portion 32b is arranged on arc-extinction device 27 side compared with the handle arms pivot 33a of handle arms 33, so the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker can be guaranteed, 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 forming Inturruptor for sub-line also can form residual current circuit breaker.
In addition, the auxiliary-handle arm axle support portion 32b earth's axis free to rotate is utilized to be supported in assistant's shaft arm 34 on framework 32 by arranging, mounting handle 31 on this assistant's shaft arm 34, wherein, this auxiliary-handle arm axle support portion 32b is arranged on arc-extinction device 27 side compared with the handle arms pivot 33a of handle arms 33, thus load side terminal can be shifted in the installation site of cross bar 13, movable contact 24 and fixed contact therefor 21, opening performance expands the space shared by arc-extinction device, so can be improved.
In addition, assistant's shaft arm 34 is removably linked, so easily can form residual current circuit breaker with the sliding tray 34b be arranged in handle arms 33 by sliding pin 35.
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 do not decompose framework 32 and can dismantle this assistant's shaft arm 34 yet, in addition, handle 31 is provided with fixed part 31a, 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, can the standardization of propulsive element further.
In addition, the linkage component linking assistant's shaft arm 34 and handle arms 33 is formed as the pin of the drum as shown in sliding pin 3, carries out via sliding tray 34b with the link of assistant's shaft arm 34, therefore, it is possible to simplify component shape and cut down number of components.
In addition, sliding pin 35 directly engages the hook portion of main spring 40, therefore, it is possible to 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 of single deenergizing circuit breaker in one end of movable contact with moving contact, if but have in the double break circuit-breaker of moving contact at the two ends of movable contact, also be configured to arrange assistant's shaft arm, setting operation handle on assistant's shaft arm, then can realize same effect.
Execution mode 2
In execution mode 1, describe the situation forming Inturruptor for sub-line, in the present embodiment, illustrate and assistant's shaft arm and sliding pin are pulled down and formed the situation of electric leakage circuit breaker.
Fig. 7 to Figure 11 represents the circuit-breaker as residual current circuit breaker of the present embodiment.Fig. 7 is the side view cutaway drawing representing on-state, Fig. 8 is the front sectional view representing on-state, Fig. 9 is the exploded view of the important part representing open-close mechanism section, a () is end view, b () is front view, Figure 10 is the side view cutaway drawing representing off-state, and Figure 11 is the side view cutaway drawing representing tripped condition.
Fig. 7, Figure 10, Figure 11 are the figures corresponding respectively with Fig. 1, Fig. 5, Fig. 6.
The residual current circuit breaker 102 of present embodiment is as Fig. 8, shown in Fig. 9, assistant's shaft arm 34 and sliding pin 35 is pulled down from the circuit-breaker 101 illustrated by execution mode 1, direct mounting handle 31 in handle arms 33, and, by cross bar 13, fixed contact therefor 21, movable contact 24, over current trip 50 is mobile according to following distance to mains side (right side on paper), namely, the difference of assistant's shaft arm pivot 34a once distance of the horizontal direction of position and handle arms pivot 33a, the detection of electrical leakage associated members 60 such as zero sequence converter are configured with in the clearance spaces (difference of the A size of Fig. 7 and the B size of Fig. 1) that load-side (left side on paper) is formed.In addition, the action under each state of Fig. 7, Figure 10, Figure 11, except except handle 31 driving handle arm 33, identical with execution mode 1, so omit the description.
In the figure 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, and the output signal corresponding to zero sequence converter 60a drives over current trip 50; Movable contact 24, it at one end has moving contact 23; Fixed contact 22, it contacts with this moving contact 23/is 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 is supported by axle rotatably; 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; Upper connecting rod 37, its axle is supported on this lever 36, is combined with lower link 39 via spring catch 38; Main spring 40, its slave end 40b is combined with spring catch 38; 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 is supported by the 1st axle strong point 33a earth's axis free to rotate arranged 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 being arranged on arc-extinction device 27 side than the 1st axle strong point.
In addition, in present embodiment, show the example of single deenergizing circuit breaker in one end of movable contact with moving contact, but also can be applied to the double break circuit-breaker at the two ends of movable contact with moving contact.
The following describes the action of circuit-breaker 102.
First, the manual operation from being switched to disconnection is described.
As shown in Figure 7, if operated operating grip 31, then the handle arms 33 be combined with this operating grip 31, is rotated for axle counterclockwise with handle arms pivot 33a.Handle arms 33 combines with the driving side 40a of main spring 40, and main spring 40 is centered by the slave end 40b be combined with spring catch 40, and driving side 40a is through the 1st hole portion 39a of upper connecting rod 37.Now, originally via the upper connecting rod 37 of spring catch 38 by main spring 40 pretension counterclockwise centered by link supports axle 37a, due to the movement of the driving side 40a of above-mentioned main spring 40, and become clockwise by pretension, start to rotate.Due to the rotation of connecting rod on this 37, the 1st hole portion 39a of the lower link 39 combined via spring catch 38 is lifted.And the 2nd hole portion 39b of lower link 39 is also lifted, thus the cross bar 13 combined therewith rotates counterclockwise, and movable contact 24 is rotated.Along with this rotation, moving contact 23 is separated with fixed contact 22, thus becomes the off-state shown in Figure 10.
Manual operation from being disconnected to connection is below described.
In Fig. 10, if operated handle 31, then the handle arms 33 be combined with this handle 31, is rotated for axle clockwise with handle arms pivot 33a.Along with the rotation of handle arms 33, main spring 40 is centered by the slave end 40b be combined with spring catch 38, and driving side 40a is through the link supports axle 37a of upper connecting rod 37.
Now, originally via the upper connecting rod 37 of spring catch 38 by main spring 40 pretension clockwise centered by link supports axle 37a, due to the movement of the driving side 40a of main spring 40, become counterclockwise by pretension, start to rotate.Due to the rotation of connecting rod on this 37, the 1st hole portion 39a of the lower link 39 combined via spring catch 38 is depressed.And the 2nd hole portion 39b of lower link 39 also reduces, thus the cross bar 13 combined therewith rotates clockwise, and movable contact 24 is rotated.Along with this rotation, moving contact 23 contacts with fixed contact 22, thus becomes the on-state shown in Fig. 7.
The following describes trip operation.
In the figure 7, if owing to becoming overcurrent condition between two terminals 20,26 such as circuit abnormality and relay portion 51 action, or detect leakage current by zero sequence converter 60a, earth detector 60b action, then trip(ping) bar 52 is pushed and rotates counterclockwise.The suppression of the now rotation of chain shot 54 is removed, and chain shot 54 starts to rotate counterclockwise.Then, the lever holding section 36b of lever 36 becomes and can rotate freely, and starts, centered by the first rotation axis portion 36a, to rotate clockwise.Along with this rotation, the link supports axle 37a of upper connecting rod 37 also moves, when have passed the axis of main spring 40, from spring catch 38, pretightning force is clockwise produced to upper connecting rod 37, via spring catch 38, lower link 39 is lifted, thus cross bar 13, movable contact 24 action successively, moving contact 23 is separated with fixed contact 22, becomes the tripped condition shown in Figure 11 thus.
From the tripped condition shown in Figure 11, handle 31 is moved counterclockwise, thus handle arms 33 is rotated, by lever holding section 36b, lever 36 is returned in the counterclockwise direction, so become the off-state shown in Figure 10.
Residual current circuit breaker according to the present embodiment, by auxiliary-handle arm axle support portion 32b is arranged on framework 32, mounting handle 31 in handle arms 33, wherein, this auxiliary-handle arm axle support portion 32b is arranged on arc-extinction device 27 side compared with handle arms pivot 33a, so the uniformity of the appearance design of Inturruptor for sub-line and residual current circuit breaker can be guaranteed, 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 is arranged on arc-extinction device 27 side compared with the handle arms pivot 33a of the axle strong point as handle arms 33, so by adding assistant's shaft arm 34 and sliding pin 35, thus mechanism's component parts can be moved to arc-extinction device 27 opposition side, suppress the generation of clearance spaces.And, larger arc chute 27 as shown in Figure 1 can be adopted.
Describe circuit-breaker in the above description, but certainly can utilize in all this shutters, also can not depart from the scope of the present invention even if carry out tiny change.
The explanation of label
13 cross bars,
22 fixed contacts,
23 moving contacts,
24 movable contact,
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 portion,
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, its with this movable contact contacts/be separated;
Arc-extinction device, it is arranged near described moving contact and described fixed contact;
Holding member, it is supported by axle rotatably, 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;
Upper connecting rod, it is pivotally supported on this lever, is combined with described lower link via spring catch;
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, is supported by the 1st axle strong point earth's axis free to rotate arranged on said frame;
Assistant's shaft arm, itself and described handle arms link, and are supported by the 2nd axle strong point earth's axis free to rotate arranged on said frame; And
Handle, it is arranged on this assistant's shaft arm.
2. circuit-breaker according to claim 1, is characterized in that, the described 2nd axle strong point is arranged on described arc-extinction device side compared with the described 1st axle strong point.
3. circuit-breaker according to claim 2, is characterized in that,
This circuit-breaker has the linkage component described assistant's shaft arm being removably linked to described handle arms, and described handle has handle arms fixed part and assistant's shaft arm fixed part.
4. circuit-breaker according to claim 3, is characterized in that, described assistant's shaft arm has the sliding tray described handle arms 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, it detects the leakage current of circuit;
Earth detector, it is connected with this zero sequence converter, and the output signal corresponding to described zero sequence converter drives over current trip;
Movable contact, it is at one end or two ends tool moving contact;
Fixed contact, its with this movable contact contacts/be separated;
Arc-extinction device, it is arranged near described moving contact and described fixed contact;
Holding member, it is supported by axle rotatably, 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;
Upper connecting rod, it is pivotally supported on this lever, is combined with described lower link via spring catch;
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, is supported by the 1st axle strong point earth's axis free to rotate arranged on said frame; And
Handle, it is arranged in this handle arms,
Described framework has the 2nd axle strong point, and the 2nd axle strong point is arranged on arc-extinction device side compared with the described 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 CN104025241A (en) | 2014-09-03 |
| CN104025241B true 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) |
Families Citing this family (9)
| 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 |
| US9887055B2 (en) * | 2015-05-18 | 2018-02-06 | Gigavac, Llc | Mechanical fuse device |
| US10566160B2 (en) | 2015-05-18 | 2020-02-18 | Gigavac, Llc | Passive triggering mechanisms for use with switching devices incorporating pyrotechnic features |
| US11239038B2 (en) | 2015-05-18 | 2022-02-01 | Gigavac, Llc | Mechanical fuse device |
| 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 |
| JP6945499B2 (en) * | 2018-05-31 | 2021-10-06 | 三菱電機株式会社 | Circuit breaker |
| KR102050912B1 (en) * | 2019-09-20 | 2019-12-02 | 제일전기공업 주식회사 | switch |
| US11443910B2 (en) | 2019-09-27 | 2022-09-13 | Gigavac, Llc | Contact levitation triggering mechanisms for use with switching devices incorporating pyrotechnic features |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101923996A (en) * | 2009-06-09 | 2010-12-22 | 三菱电机株式会社 | Circuit-breaker |
| WO2012081105A1 (en) * | 2010-12-16 | 2012-06-21 | 三菱電機株式会社 | Circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4147347B2 (en) * | 2003-03-11 | 2008-09-10 | 富士電機機器制御株式会社 | Circuit breaker for wiring |
-
2012
- 2012-10-11 CN CN201280065588.8A patent/CN104025241B/en active Active
- 2012-10-11 WO PCT/JP2012/006513 patent/WO2014057517A1/en active Application Filing
- 2012-10-11 JP JP2014512212A patent/JP5549794B1/en active Active
- 2012-10-11 KR KR1020157001606A patent/KR101680492B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101923996A (en) * | 2009-06-09 | 2010-12-22 | 三菱电机株式会社 | Circuit-breaker |
| WO2012081105A1 (en) * | 2010-12-16 | 2012-06-21 | 三菱電機株式会社 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104025241A (en) | 2014-09-03 |
| JPWO2014057517A1 (en) | 2016-08-25 |
| KR20150020709A (en) | 2015-02-26 |
| KR101680492B1 (en) | 2016-11-28 |
| WO2014057517A1 (en) | 2014-04-17 |
| JP5549794B1 (en) | 2014-07-16 |
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