CN107026059A - A kind of multibreak circuit breaker - Google Patents
A kind of multibreak circuit breaker Download PDFInfo
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- CN107026059A CN107026059A CN201710434904.9A CN201710434904A CN107026059A CN 107026059 A CN107026059 A CN 107026059A CN 201710434904 A CN201710434904 A CN 201710434904A CN 107026059 A CN107026059 A CN 107026059A
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- fracture
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- 230000008093 supporting effect Effects 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000003068 static effect Effects 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005381 potential energy Methods 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 description 92
- 208000010392 Bone Fractures Diseases 0.000 description 87
- 238000010891 electric arc Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- H01H71/08—Terminals; Connections
-
- 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
- H01H71/24—Electromagnetic mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
A kind of multibreak circuit breaker, including housing, input terminal, outlet terminal, magnetictrip, stationary contact, movable contact, contact supporting, handle and tripping mechanism.Contact supporting is directly electrically connected with outlet terminal.Main fracture is one, and the coil other end of magnetictrip connects a stationary contact by static contact panel；Or main fracture is multiple, each main fracture is parallel relationship；The coil other end of magnetictrip connects a stationary contact by static contact panel, and other stationary contacts are electrically connected with input terminal respectively；Side towards input terminal of each movable contact on contact supporting.Also include one or more auxiliary fractures：It is one to aid in fracture, and an auxiliary contact are in contact supporting towards outlet terminal side, and another auxiliary contact is on a touch panel；Or auxiliary fracture is multiple, each auxiliary fracture is in parallel；In paired auxiliary contact, an auxiliary contact are in contact supporting towards outlet terminal side, and another auxiliary contact is on a touch panel.Touch panel is electrically connected with outlet terminal.
Description
Technical field
The technical program is related to breaker, specifically a kind of multibreak miniature circuit breaker.
Background technology
Miniature circuit breaker product its inner current path in the market is usually：Input terminal → coil → static contact panel
→ dynamic/static contact is this small-sized disconnected to fracture → moving contact → soft line → bimetal leaf → soft line → outlet terminal of composition
Road device rated current is mostly in below 63A.As the improvement of people's living standards, all kinds of high-power electric appliances enter Common People one after another
Front yard, home-use electricity becomes increasing therewith, and higher and higher requirement is it is also proposed to the rated operational current of breaker.
Under the promotion of this market demand, each producer develops the miniature circuit breaker of big specification one after another.Profile and installation due to breaker
Size receives the limitation of various existing standards or distribution box, it is impossible to any to increase or change, the small-sized open circuit of big specification
Device can only be designed in existing inner space.From the point of view of the larger product that each producer releases at present, its big specification is small
Type breaker is substantially on the basis of 63A circuit breaker mechanism, overstriking electric-conductor and the side for increasing soft line shunting
Formula is realized.
Original oneway circuit is divided into two-way by so-called soft line shunting at moving contact, and original path is maintained all the way i.e.
Moving contact → soft line → bimetal leaf → soft line → outlet terminal, another road path is moving contact → soft line → leading-out terminal
Son.Suitably lifted using the through-current capability of breaker after this two-way dividing technology, but bring three comparisons to dash forward therewith
The problem of going out：1st, two soft lines have been welded on moving contact, the responsiveness of moving contact have been have impact in performance so that in short circuit
Moving contact opening velocity is slow during disjunction, and arc energy quantitative change is big, and short circuit breaking capacity is lowered；Added a little in production technology
Weld difficulty and production fraction defective.2nd, the soft line of two-way converges at moving contact the space for occupying bimetal leaf free end,
Do not put the position of soft line in order when breaker is produced and assembled or cause soft link position to occur in breaker mechanism action
Soft line easily produces interference with bimetal leaf free end after change, and bimetal leaf free end will cause to move after by soft line being interfered
It is disturbed, overload characteristic is unstable.3rd, the soft line of two-way is converged at moving contact, because the soft line of narrow space two-way can not
Isolation touching mutually, this causes the current ratio for flowing through two-way unstable, small when big when flowing through the electric current of bimetal leaf to control
System, this also causes circuit breaker overload characteristic unstable.
The content of the invention
The technical problem to be solved：The present invention influences moving contact speed mainly for solving the soft line that existing scheme occurs
And cause that breaker breaking characteristics are bad, interference bimetal leaf and the overload characteristic that causes is bad and the soft line of two-way is mutually touched
Touch and cause the problem of unstable circuit breaker overload characteristic caused of the electric current for flowing through bimetal leaf is unstable.
A kind of multibreak circuit breaker, including housing, input terminal, outlet terminal, magnetictrip, stationary contact, movable contact,
Contact supporting, handle and tripping mechanism；
The input terminal and outlet terminal are located at the head and the tail two ends in housing respectively；
The handle is located at the middle part of housing cavity, and the panel of housing is stretched out in part；Handle connects tripping mechanism；
The magnetictrip includes support member, iron core and coil；Iron core and coil are connected in housing by support member
Portion, and towards end of incoming cables side；Coil is wound on outside iron core, one end connection input terminal of coil；The axis and line of the iron core
The axis of circle is overlapped, and iron core is acted in the axial direction；Iron core connects tripping mechanism；
The movable contact is on contact supporting；Contact supporting connects tripping mechanism；Handle and magnetictrip are by threading off
Mechanism band moving contact rack is acted；One movable contact and a stationary contact constitute a main fracture, and main fracture is with contact supporting
Action is opened or closed；The position of contact supporting is between magnetictrip position and outlet terminal.
The contact supporting is also directly electrically connected with outlet terminal；
The main fracture has one or more：
A, the main fracture are one, and the coil other end of magnetictrip connects a stationary contact by static contact panel；
Either B, the main fracture are multiple, and each main fracture is parallel relationship；The coil other end of magnetictrip
One stationary contact is connected by static contact panel, other stationary contacts are electrically connected with input terminal respectively；
Side towards input terminal of each movable contact on contact supporting；
Also include one or more auxiliary fractures, each auxiliary fracture includes the paired auxiliary contact being opened or closed,
A, the auxiliary fracture are one, an auxiliary contact in contact supporting towards outlet terminal side, another
Auxiliary contact are on a touch panel, and the touch panel is electrically connected with outlet terminal；
B, the auxiliary fracture are multiple, and each auxiliary fracture is parallel relationship；In paired auxiliary contact, an auxiliary
Contact is in contact supporting towards outlet terminal side, and another auxiliary contact is on a touch panel, the touch panel and outlet terminal
Electrical connection；
The contact supporting is also directly electrically connected with outlet terminal.
Principle explanation：
Auxiliary contact are mainly used in shunting, electric current all the way are divided into two-way or more multichannel, one is in limited space
Increase the sectional area of current conduction body, another is by controlling the disconnection order of each fracture to control during circuit breaker short circuit disjunction
Internal resistance, while reach lifting breaker breaking capacity purpose.
Circuit breaker current is such as divided into two-way by auxiliary contact, breaker first disconnects electric all the way in short circuit breaking
Stream, then disconnects another road electric current again.Because another road electric current is also in connected state during disconnection first via circuit, so first breaking
The fracture opened will not produce big electric arc, and the internal resistance of breaker is significantly increased so that arc energy when disconnecting the second road circuit
Access effective suppression.
During contact supporting action (such as spinning movement), the circuit main fracture that moving contact is constituted with stationary contact is first broken
Open.Contact supporting continues to rotate to certain angle, and auxiliary fracture disconnects.
The disconnection of auxiliary fracture causes behind moving contact the circuit pathways of (i.e. in figure on the right side of contact supporting) to reduce, accordingly
, the resistance increase of circuit in the conduction state.The drastically mutation of this resistance has very for extinguishing breaker fracture electric arc
Big help.Therefore this programme not only can effectively lift the opening velocity of moving contact during short circuit breaking, suppress fracture electricity
Fracture electric arc is extinguished in arc energy, moreover it is possible to increased dramatically breaker internal resistance during short circuit breaking, help.
Touch panel can be designed as 1, when allowing in housing cavity space, can also be designed to multiple, auxiliary fracture institute
The electrical property of realization is more preferably.
When main fracture has multiple, the corresponding path of a fracture passes through the coil of magnetictrip, for short-circuit protection
Pass through with electric current, other fractures are only used for electric current and passed through.
Further, when the auxiliary fracture has multiple,
A, the contact supporting have one, and touch panel has multiple；One auxiliary contact of each auxiliary fracture are all in the contact
On support, another contact of each auxiliary fracture is respectively on a touch panel；
Or, B, the contact supporting have multiple, and touch panel has multiple；Each contact supporting is mutually isolated, and acts identical；
Two contacts of each auxiliary fracture are respectively on a contact supporting and on a corresponding touch panel；On each contact supporting
Movable contact is set, the quantity of movable contact is consistent with the quantity of main fracture, and position is corresponding with the position of stationary contact.
Further, the contact supporting is connected in housing by rotating shaft, constitutes lever construction.
Further, it is by soft wiring to be electrically connected between the contact supporting and outlet terminal；The touch panel and outlet
Connected between terminal by soft wiring.
Further, in addition to thermal trip；Thermal trip is acted by tripping mechanism band moving contact rack.
Further, in addition to arc-control device；The position of arc-control device is located at electromagnetic trip at the middle part of housing cavity
The lower section of device position.
Specifically, the thermal trip can be bimetal leaf, and positioned between outlet terminal and contact supporting；Contact
Support connects one end of bimetal leaf by soft wiring, and the other end of bimetal leaf connects outlet terminal by soft wiring.
Scheme 1 --- the shape of the touch panel is " L " type, and " L " type touch panel is fixed in housing；It is corresponding, in housing
The edge of the inner chamber of portion's protuberance and tail end link position is " L " type；The position of touch panel bending housing middle part protuberance and
The position of tail end connection；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel；Wherein, auxiliary contact are in " L " type
On one side of touch panel, the tie point of touch panel and outlet terminal is in the another side of " L " type touch panel.
Scheme 2 --- it is connected with elastomer on the touch panel；The structure of the touch panel is：The centre position of touch panel, which is rotated, to be connected
It is connected in housing, constitutes lever construction；Auxiliary contact on touch panel are located at the first side of rotary shaft；The connection of touch panel and outlet terminal
Point is positioned at the last side of rotary shaft；Elastomer is in the end of touch panel；In the case where auxiliary fracture is connection status, potential energy of elastic body is increased.
The shape of the touch panel is " L " type, and the corner location of " L " type touch panel is the position of rotary shaft；It is corresponding, shell
The middle part protuberance of body and the edge of the inner chamber of tail end link position are " L " types；The position of the rotary shaft of touch panel is in housing
Portion's protuberance and the position of tail end connection；
The elastomer is stage clip；The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
Scheme 3 --- the touch panel is elastic sheet metal, and the structure of touch panel is：The end of touch panel is fixed in housing, touches
Auxiliary contact on plate are located at the first side of touch panel, and the tie point of touch panel and outlet terminal is located at the middle part of touch panel.
The shape for the touch panel that the elastic sheet metal is constituted is " L " type；Corresponding, the middle part protuberance and tail end of housing connect
The edge for connecing the inner chamber of position is " L " type；The position that the corner location of " L " type touch panel is connected in the middle part protuberance and tail end of housing
Put；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
Magnetictrip, the operation principle of thermal trip are：
Electromagnetic release mechanism can be the coil being connected with the input terminal of breaker, for the disconnected short-circuit protection of breaker.
Circuit occurs that huge short circuit current flow (such as 6000A) will be produced in circuit during short circuit, and short circuit current flow is far longer than the volume of breaker
Determine electric current, huge short circuit current flow will produce huge electromagnetic force on coil, and electromagnetic force sends out the iron core for driving electromagnetic mechanism
Raw displacement disconnects dynamic and static contact so as to trigger breaker tripping mechanism, so that disconnecting circuit.
Thermal trip is bimetal leaf, and thermal trip is the overload protection module of breaker.When circuit breaker electric flow valuve is more than
Rated current (such as 1.45 times rated current) and when overloading, bimetal leaf will overheat and produce bending, bimetal leaf bending
To the tripping mechanism of breaker, and then disconnection dynamic and static contact will be triggered during predetermined extent, so as to trigger circuit breaker tripping to break
Electricity.
The multiple fractures of design of the technical program, reduce even to avoid and soft line are welded on moving contact.That is breaker
Two or more contact fractures are become by a contact fracture, the connection of soft line and moving contact is by original fixed weldering
Connect and become contact fracture connection so that moving contact is linked to be loop with soft line by contact when mechanism is closed, and
Soft line is disconnected by contact fracture and moving contact in mechanism disconnection process, and the responsiveness of moving contact is not by soft line system
About.After multibreak mouth structure, soft line is no longer squeezed in moving contact weld, but can split is not influenceing bimetallic
In the space of piece, and then solve the overload instability problem that soft line is caused with bimetal leaf interference.
Beneficial effect
The use of the present invention improves the short circuit breaking capacity of miniature circuit breaker and the stability of overload protection characteristics, simultaneously
The assembly relation of breaker is improved, the batch production uniformity and stability of breaker is improved, greatly improves big rule
Lattice small breaker reliability and production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of example 1；
Fig. 2 is the off-state structural representation of example 2
Fig. 3 is；The closure state structural representation of example 2
In figure：Housing 1, input terminal 2, outlet terminal 3, magnetictrip 4, bimetal leaf 5, stationary contact 6, movable contact 7,
Contact supporting 8, handle 9, auxiliary contact 10, touch panel 11, soft line 12, divider wall 13, stage clip 14, the position 15 of arc-control device,
Arc striking piece 16.
Embodiment
The technical program is illustrated with specific embodiment below in conjunction with the accompanying drawings：
A kind of multibreak circuit breaker, including housing, input terminal, outlet terminal, magnetictrip, stationary contact, movable contact,
Contact supporting, handle and tripping mechanism；The input terminal and outlet terminal are located at the head and the tail two ends in housing respectively；The hand
Handle is located at the middle part of housing cavity, and the panel of housing is stretched out in part；Handle connects tripping mechanism；The magnetictrip includes
Support member, iron core and coil；Iron core and coil are connected to enclosure interior by support member, and towards end of incoming cables side；Coil around
Outside iron core, one end connection input terminal of coil；The axis of the iron core is overlapped with the axis of coil, and iron core is in the axial direction
Action；Iron core connects tripping mechanism；The movable contact is on contact supporting；Contact supporting connects tripping mechanism；Handle and electromagnetism
Electrical apparatus release is acted by tripping mechanism band moving contact rack；One movable contact and a stationary contact constitute a main fracture, main disconnected
Mouth is opened or closed with the action of contact supporting；Contact supporting is interposed between magnetictrip position and outlet terminal.
The contact supporting is also directly electrically connected with outlet terminal；
The main fracture has one or more (in this example 1~2, main fracture is one)：
A, the main fracture are one, and the coil other end of magnetictrip connects a stationary contact by static contact panel；
Either B, the main fracture are multiple, and each main fracture is parallel relationship；The coil other end of magnetictrip
One stationary contact is connected by static contact panel, other stationary contacts are electrically connected with input terminal respectively；
Side towards end of incoming cables of each movable contact on contact supporting；
Also include one or more auxiliary fractures (in this example 1~2, auxiliary fracture is one), each auxiliary fracture includes
Paired fracture or the auxiliary contact of closure,
A, the auxiliary fracture are one, an auxiliary contact in contact supporting towards outlet terminal side, another
Auxiliary contact are on a touch panel, and the touch panel is electrically connected with outlet terminal；
B, the auxiliary fracture are multiple, and each auxiliary fracture is parallel relationship；In paired auxiliary contact, an auxiliary
Contact is in contact supporting towards outlet terminal side, and another auxiliary contact is on a touch panel, the touch panel and outlet terminal
Electrical connection；
The contact supporting is also directly electrically connected with outlet terminal.
When main fracture has multiple, the corresponding path of a fracture passes through the coil of magnetictrip, for short-circuit protection
Pass through with electric current, other fractures are only used for electric current and passed through.
Further, when the auxiliary fracture has multiple,
A, the contact supporting have one, and touch panel has multiple；One auxiliary contact of each auxiliary fracture are all in the contact
On support, another contact of each auxiliary fracture is respectively on a touch panel；(in this example 1,2, using contact supporting
Mode)
Or, B, the contact supporting have multiple, and touch panel has multiple；Each contact supporting is mutually isolated, and acts identical；
Two contacts of each auxiliary fracture are respectively on a contact supporting and on a corresponding touch panel；On each contact supporting
Movable contact is set, the quantity of movable contact is consistent with the quantity of main fracture, and position is corresponding with the position of stationary contact.
The contact supporting is connected in housing by rotating shaft, constitutes lever construction.The contact supporting and outlet terminal
Between electrical connection be by soft wiring；Connected between the touch panel and outlet terminal by soft wiring.Also include thermal trip；Heat
Electrical apparatus release is acted by tripping mechanism band moving contact rack.Also include arc-control device；The position of arc-control device is in housing cavity
Middle part, and positioned at the lower section of magnetictrip position.
Specifically, the thermal trip is bimetal leaf, and positioned between outlet terminal and contact supporting.This example 1,2
In, the contact supporting is also with the structure that outlet terminal is directly electrically connected：Contact supporting connects bimetal leaf by soft wiring
One end, the other end of bimetal leaf connects outlet terminal by soft wiring.
Such as Fig. 1, example 1 --- the shape of the touch panel is " L " type, and " L " type touch panel is fixed in housing；It is corresponding, housing
Middle part protuberance and the edge of inner chamber of tail end link position be " L " type；The position of touch panel bending is protruded at the middle part of housing
Portion and the position of tail end connection；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel；Wherein, auxiliary contact are in " L " type
On one side of touch panel, the tie point of touch panel and outlet terminal is in the another side of " L " type touch panel.Pass through between touch panel and outlet terminal
Soft wiring is connected, and other structures of the soft wiring in divider wall and housing are limited in separate space, it is to avoid with housing
Interior other structures interference.
Such as Fig. 2,3, example 2 --- it is connected with elastomer on the touch panel；The structure of the touch panel is：The centre position of touch panel
It is rotatably connected in housing, constitutes lever construction；Auxiliary contact on touch panel are located at the first side of rotary shaft；Touch panel and outlet terminal
Tie point be located at rotary shaft last side；Elastomer is in the end of touch panel；In the case where auxiliary fracture is connection status, potential energy of elastic body
Increase.
The shape of the touch panel is " L " type, and the corner location of " L " type touch panel is the position of rotary shaft；It is corresponding, shell
The middle part protuberance of body and the edge of the inner chamber of tail end link position are " L " types；The position of the rotary shaft of touch panel is in housing
Portion's protuberance and the position of tail end connection；
The elastomer is stage clip；The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
Example 3 --- the touch panel is elastic sheet metal, and the structure of touch panel is：The end of touch panel is fixed in housing, touch panel
On auxiliary contact be located at the first side of touch panel, the tie point of touch panel and outlet terminal is located at the middle part of touch panel.
The shape for the touch panel that the elastic sheet metal is constituted is " L " type；Corresponding, the middle part protuberance and tail end of housing connect
The edge for connecing the inner chamber of position is " L " type；The position that the corner location of " L " type touch panel is connected in the middle part protuberance and tail end of housing
Put；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
Electromagnetic mechanism (magnetictrip) side, increases one or more auxiliary fracture.One auxiliary port is i.e. from inlet wire
Terminal is to adding current path all the way between moving contact.Aid in the disconnection order of fracture and main fracture first successively for auxiliary fracture
Disconnect, last main fracture disconnects.The benefit so designed at least three：
1st, increased auxiliary circuit contribute in limited space circuit breaker internal from input terminal to moving contact it
Between internal resistance reduce to the requirement for meeting big specification breaker (such as rated current 125A)；
2nd, first disconnection last disconnect again will not in incision position when main fracture ensure that and aid in fracture to disconnect successively for auxiliary fracture
Big electric arc is produced, electric arc can be just produced at main fracture when finally disconnecting main fracture so that arc energy smoothly enters and main fracture
Connected arc-chutes；
3rd, auxiliary fracture first disconnects successively finally disconnects main fracture so that breaker is between input terminal to moving contact again
Internal resistance obtain again and again significant increase with the disconnection of auxiliary fracture, until main fracture disconnects, its internal resistance reaches small dimension
The level of short-circuiting device (such as rated current 63A).
In heat dropout (thermal trip) side, thermal tripping mechanism is welded to connect with moving contact by soft line, and heat is threaded off
Mechanism is welded to connect with outlet terminal by soft line.Increase between moving contact and outlet terminal all the way or multichannel auxiliary is electric
Flow path, auxiliary current path is electrically connected by being located at the auxiliary fracture of moving contact rotary shaft opposite side with moving contact.
When breaker disconnects the auxiliary fracture of hot dropout side together with the auxiliary fracture of electromagnetic mechanism side in electromagnetic mechanism
The main fracture of side disconnects successively before disconnecting.The benefit so designed have it is following some：
1st, increased auxiliary circuit overcomes the limitation of bimetal leaf resistance circuit breaker internal from moving contact to leading-out terminal
Internal resistance between son is reduced to the requirement for meeting big specification breaker (such as rated current 125A)；
2nd, increase auxiliary fracture causes the soft line that the soft line of auxiliary circuit is threaded off with heat to have certain physical distance, can
Prevent electric current between the current path of existing scheme Zhong Ge roads and mutually altered to cause the electric current for flowing through thermal tripping mechanism to be physically separated
It is unstable to cause circuit breaker overload characteristic unstable；
3rd, auxiliary fracture disconnects successively before main fracture disconnection will not produce when ensure that auxiliary fracture disconnection in incision position
Big electric arc, can just produce electric arc so that arc energy smoothly enters and is connected with main fracture when finally disconnecting main fracture at main fracture
Arc-chutes；
4th, auxiliary fracture main fracture disconnect before successively disconnect so that breaker between moving contact to outlet terminal in
Hinder as the disconnection of auxiliary fracture obtains again and again significant increase, until main fracture disconnects, its internal resistance reaches small dimension short circuit
The level of device (such as rated current 63A).
In summary, auxiliary circuit and auxiliary fracture are set in electromagnetic mechanism side and hot dropout side, can cause not only have
The through-current capability of big specification (such as rated current 125A), have with small dimension breaker (such as rated current 63A) short-circuit protection and
Overload protection ability.
By taking the structure of the present embodiment 2 as an example, the Principle Method of this breaker is：
Soft line wherein all the way is connected by auxiliary contact pair with moving contact.In breaker disconnection process, mechanism
After electrical apparatus release (tripping mechanism) tripping, moving contact rotates in the presence of the operating spring of mechanism by the center of circle of main shaft.Rotate through
Cheng Zhong, the circuit main fracture that moving contact is constituted with stationary contact first disconnects, and moving contact continues to rotate to after certain angle, moving contact with
The auxiliary fracture of auxiliary contact composition disconnects.The disconnection of auxiliary fracture causes behind moving contact (i.e. in figure on the right side of contact supporting)
Circuit is become all the way by two-way, accordingly, and its circuitous resistance is changed into original 2 times, and the drastically mutation of this resistance is for extinguishing
Breaker fracture electric arc tool is very helpful.Therefore this programme not only effectively can lift moving contact during short circuit breaking
Opening velocity, suppresses fracture arc energy, moreover it is possible to increased dramatically breaker internal resistance during short circuit breaking, and help extinguishes disconnected
Mouth electric arc.
Claims (10)
1. a kind of multibreak circuit breaker, including housing, input terminal, outlet terminal, magnetictrip, stationary contact, movable contact, touch
Head bracket, handle and tripping mechanism；
The input terminal and outlet terminal are located at the head and the tail two ends in housing respectively；
The handle is located at the middle part of housing cavity, and the panel of housing is stretched out in part；Handle connects tripping mechanism；
The magnetictrip includes support member, iron core and coil；Iron core and coil are connected to enclosure interior by support member, and
Towards end of incoming cables side；Coil is wound on outside iron core, one end connection input terminal of coil；The axis of the iron core and the axle of coil
Line is overlapped, and iron core is acted in the axial direction；Iron core connects tripping mechanism；
The movable contact is on contact supporting；Contact supporting connects tripping mechanism；Handle and magnetictrip pass through tripping mechanism
Band moving contact rack action；One movable contact and stationary contact constitute a main fracture, main fracture with contact supporting action
It is opened or closed；The position of contact supporting between magnetictrip position and outlet terminal, it is characterized in that：
The contact supporting is also directly electrically connected with outlet terminal；
The main fracture has one or more：
A, the main fracture are one, and the coil other end of magnetictrip connects a stationary contact by static contact panel；
Either B, the main fracture are multiple, and each main fracture is parallel relationship；The coil other end of magnetictrip passes through
Static contact panel connects a stationary contact, and other stationary contacts are electrically connected with input terminal respectively；
Side towards input terminal of each movable contact on contact supporting；
Also include one or more auxiliary fractures, each auxiliary fracture includes the paired auxiliary contact being opened or closed,
A, the auxiliary fracture are one, and an auxiliary contact are in contact supporting towards outlet terminal side, and another is aided in
Contact is on a touch panel, and the touch panel is electrically connected with outlet terminal；
B, the auxiliary fracture are multiple, and each auxiliary fracture is parallel relationship；In paired auxiliary contact, an auxiliary contact
In contact supporting towards outlet terminal side, another auxiliary contact is on a touch panel, and the touch panel is electrically connected with outlet terminal
Connect.
2. multibreak circuit breaker according to claim 1, it is characterized in that when the auxiliary fracture has multiple,
A, the contact supporting have one, and touch panel has multiple；One auxiliary contact of each auxiliary fracture are all in the contact supporting
On, another contact of each auxiliary fracture is respectively on a touch panel；
Or, B, the contact supporting have multiple, and touch panel has multiple；Each contact supporting is mutually isolated, and acts identical；Each
Two contacts of fracture are aided in respectively on a contact supporting and on a corresponding touch panel；Set on each contact supporting
Movable contact, the quantity of movable contact is consistent with the quantity of main fracture, and position is corresponding with the position of stationary contact.
3. multibreak circuit breaker according to claim 1, it is characterized in that the contact supporting is connected to housing by rotating shaft
It is interior, constitute lever construction.
4. multibreak circuit breaker according to claim 1, is electrically connected it is characterized in that stating between contact supporting and outlet terminal
It is by soft wiring；Connected between the touch panel and outlet terminal by soft wiring.
5. multibreak circuit breaker according to claim 1, it is characterized in that also including thermal trip and/or arc-control device；Heat
Electrical apparatus release is acted by tripping mechanism band moving contact rack；The position of arc-control device is located at electromagnetism at the middle part of housing cavity
The lower section of electrical apparatus release position.
6. according to any described multibreak circuit breaker of Claims 1 to 5, it is characterized in that the shape of the touch panel is " L " type,
" L " type touch panel is fixed in housing；Corresponding, the edge of the middle part protuberance of housing and the inner chamber of tail end link position is " L "
Type；The position that the position of touch panel bending is connected in the middle part protuberance and tail end of housing；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel；Wherein, auxiliary contact are in " L " type touch panel
One side on, the tie point of touch panel and outlet terminal is in the another side of " L " type touch panel.
7. according to any described multibreak circuit breaker of Claims 1 to 5, it is characterized in that being connected with elastomer on the touch panel；
The structure of the touch panel is：The centre position of touch panel is rotatably connected in housing, constitutes lever construction；Auxiliary contact on touch panel
Positioned at the first side of rotary shaft；The tie point of touch panel and outlet terminal is located at the last side of rotary shaft；Elastomer is in the end of touch panel；
Fracture is aided in under connection status, potential energy of elastic body is increased.
8. multibreak circuit breaker according to claim 7, it is characterized in that the shape of the touch panel is " L " type, " L " type touch panel
Corner location be rotary shaft position；It is corresponding, the side of the middle part protuberance of housing and the inner chamber of tail end link position
Edge is " L " type；The position that the position of the rotary shaft of touch panel is connected in the middle part protuberance and tail end of housing；
The elastomer is stage clip；The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
9. according to any described multibreak circuit breaker of Claims 1 to 5, it is characterized in that the touch panel is elastic sheet metal, touch
The structure of plate is：The end of touch panel is fixed in housing, and the auxiliary contact on touch panel are located at the first side of touch panel, touch panel and leading-out terminal
The tie point of son is located at the middle part of touch panel.
10. multibreak circuit breaker according to claim 7, it is characterized in that the shape for the touch panel that the elastic sheet metal is constituted
It is " L " type；Corresponding, the edge of the middle part protuberance of housing and the inner chamber of tail end link position is " L " type；" L " type touch panel
The position that corner location is connected in the middle part protuberance and tail end of housing；
The tie point and auxiliary contact of touch panel and outlet terminal are all located at the bottom surface of touch panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434904.9A CN107026059A (en) | 2017-06-10 | 2017-06-10 | A kind of multibreak circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434904.9A CN107026059A (en) | 2017-06-10 | 2017-06-10 | A kind of multibreak circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN107026059A true CN107026059A (en) | 2017-08-08 |
Family
ID=59531494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710434904.9A Pending CN107026059A (en) | 2017-06-10 | 2017-06-10 | A kind of multibreak circuit breaker |
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| Country | Link |
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| CN (1) | CN107026059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243936A (en) * | 2018-10-26 | 2019-01-18 | 厦门国研科技有限公司 | A kind of multiloop breaker |
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| CN101989517A (en) * | 2010-12-01 | 2011-03-23 | 沈阳斯沃电器有限公司 | Double-break moving contact system of molded case circuit breaker |
| CN202502956U (en) * | 2011-12-19 | 2012-10-24 | 杭州宏凯电气有限公司 | Leakage circuit breaker with a plastic shell |
| CN206893571U (en) * | 2017-06-10 | 2018-01-16 | 王慧德 | A kind of multibreak circuit breaker |
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2017
- 2017-06-10 CN CN201710434904.9A patent/CN107026059A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989517A (en) * | 2010-12-01 | 2011-03-23 | 沈阳斯沃电器有限公司 | Double-break moving contact system of molded case circuit breaker |
| CN202502956U (en) * | 2011-12-19 | 2012-10-24 | 杭州宏凯电气有限公司 | Leakage circuit breaker with a plastic shell |
| CN206893571U (en) * | 2017-06-10 | 2018-01-16 | 王慧德 | A kind of multibreak circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109243936A (en) * | 2018-10-26 | 2019-01-18 | 厦门国研科技有限公司 | A kind of multiloop breaker |
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Effective date of registration: 20171225 Address after: 210000 Shengli Road, Jiangning economic and Technological Development Zone, Jiangning District, Nanjing, Jiangsu Province, No. 19 Applicant after: Wang Huide Address before: 210000 Shengli Road, Jiangning economic and Technological Development Zone, Jiangning District, Nanjing, Jiangsu Province, No. 19 Applicant before: Nanjing ECH Technology Co.,Ltd. |
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