CN108766848A - The arc extinguishing structure of breaker - Google Patents
The arc extinguishing structure of breaker Download PDFInfo
- Publication number
- CN108766848A CN108766848A CN201810647197.6A CN201810647197A CN108766848A CN 108766848 A CN108766848 A CN 108766848A CN 201810647197 A CN201810647197 A CN 201810647197A CN 108766848 A CN108766848 A CN 108766848A
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- CN
- China
- Prior art keywords
- contact
- insulating barrier
- shell
- arc extinguishing
- moving contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/06—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/20—Terminals; Connections
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of arc extinguishing structure of breaker, shell 5 including the breaker and moving contact in shell 5, static contact and insulating barrier, the middle part of the moving contact is rotatably installed in by shaft in shell 5, the dynamic contact portion of described moving contact one end is equipped with the matched movable contact of stationary contact with static contact, the driving portion of the moving contact other end is drivingly connected with insulating barrier, also, the two sides of insulating barrier 1 are in contact with shell 5；When the moving contact of breaker is opened with static contact reprimand, moving contact rotation, the movable contact moved in contact portion is detached with the stationary contact of static contact, and driving portion drives insulating barrier to move, and insulating barrier coordinates 5 complete barrier of shell between the dynamic contact portion and static contact of moving contact.The present invention provides one kind and efficiently solving the problems, such as that electric arc can not extinguish or arc reignition due to arc energy is big, improve the arc extinguishing structure of the connection of breaker and the breaker of breaking capacity.
Description
Technical field
The present invention relates to low voltage electrical apparatus technology fields, and in particular to a kind of arc extinguishing structure of breaker.
Background technology
Breaker of plastic casing is the equipment for protecting electrical equipment and circuit.The connection of breaker and breaking capacity determine circuit institute
The short-circuit payload that can be carried.Present breaker of plastic casing is in connection and disjunction high voltage and high current, due to arc energy
Greatly, arc reignition even electric arc the phenomenon that can not extinguishing is easy tod produce so that breaker is special in high voltage and high current disjunction
It is not that cannot achieve connection and the promotion of breaking capacity in direct current photovoltaic breaker.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, one kind is provided and efficiently solves electricity due to arc energy is big
Arc can not extinguish or arc reignition problem, improves the arc extinguishing structure of the connection of breaker and the breaker of breaking capacity.
To achieve the above object, present invention employs following technical solutions：
A kind of arc extinguishing structure of breaker, including it is the shell 5 of breaker and moving contact 8 in shell 5, quiet
The middle part of contact 7 and insulating barrier 1, the moving contact 8 is rotatably installed in by shaft 6 in shell 5,8 one end of the moving contact
Dynamic contact portion 81 be equipped with 70 matched movable contact 80 of stationary contact with static contact 7, the driving portion 82 of 8 other end of moving contact with
Insulating barrier 1 is drivingly connected；When the moving contact 8 of breaker is opened with the reprimand of static contact 7, moving contact 8 rotates, and moves moving in contact portion 81 and touches
Point 80 is detached with the stationary contact 70 of static contact 7, and driving portion 82 drives insulating barrier 1 to move, and insulating barrier 1 coordinates shell 5 complete
Barrier will be divided into two independent insulation chambers, and dynamic tactile between the dynamic contact portion 81 and static contact 7 of moving contact 8 in shell
Head is located at static contact in two independent insulated cavity rooms.
Preferably, one end of the insulating barrier 1 is the partition portion 11 for separating moving contact 8 and static contact 7, the other end
Driving portion 82 for driven portion 13, the moving contact 8 is drivingly connected by catch bar 2 and insulating barrier 1, the catch bar 2
One end is connected on the driving portion 82 of moving contact 8, and the other end of catch bar 2 is then abutted against with the driven portion 13 of insulating barrier 1.
Preferably, the insulating barrier 1 be arranged between moving contact 8 and static contact 7, the catch bar 2 be placed in insulation every
The partition portion 11 at the rear of plate 1, insulating barrier 1 is level board, and driven portion 13 is vertical plate, and insulating barrier 1 further includes connection
Portion 12, the interconnecting piece 12 are to tilt the hang plate being connected between partition portion 11 and driven portion 13.
Preferably, one end that the static contact 7 is equipped with stationary contact 70 is stationary contact portion 71, and the other end is wire connecting portion 72, described
Shell 5 is equipped with the isolation chamber 502 for the fully wrapped around firmly stationary contact portion 71 of static contact 7, and the top of the isolation chamber 502 is set
There is the evacuation positioned at 80 lower section of movable contact to lack 503, the stationary contact portion 71 of the static contact 7 is placed in isolation chamber 502, stationary contact 70
Evacuation is placed in lack in 503；Insulating barrier 1 shelters from the evacuation of isolation chamber 502 completely when movable contact 80 is detached with stationary contact 70
Lack 503.
Preferably, the shell 5 is assembled by two half-shells 500 to intercouple, and the edge of the half-shell 500 is set
There is locating convex block 504, the locating convex block 504 is less than the first side wall 5001 of half-shell 500 to form the wire connecting portion with static contact 7
72 matched limit inclined-planes 505 are additionally provided with convex ribs 507, one end and the half-shell 500 of the convex ribs 507 in the half-shell 500
The connection of the first side wall 5001 is simultaneously concordant with the first side wall 5001, and the other end separately forms the evacuation with locating convex block 504 and lacks
503, surround the isolation chamber 502 between the first side wall 5001 of the half-shell 500, locating convex block 504 and convex ribs 507.
Preferably, two are arranged on the shell 5 for the guide groove 4 that insulating barrier 1 is oriented to, the insulating barrier
1 two sides are removably inserted within respectively in guide groove 4.
Preferably, the guide groove 4 is arranged on the locating convex block 504 of shell 5, and insulating barrier is used for by sequentially connected
The guiding wall surface 41 of 1 mobile guide, for limit insulating barrier 1 movement final position backstop wall surface 42 and for limiting
The limit wall surface 43 that insulating barrier 1 processed is offset up surrounds, the either flush for being oriented to wall surface 41 and convex ribs 507.
Preferably, the return unit for resetting insulating barrier 1 is equipped between the insulating barrier 1 and shell 5；Breaker closes
When lock, moving contact 8 rotates, and driving portion 82 removes the active force of insulating barrier 1, and insulating barrier 1 is multiple under the action of return unit
Position and withdraw the contact area between moving contact 8 and static contact 7, move the stationary contact of the movable contact 80 and static contact 7 in contact portion 81
70 contacts.
Preferably, the return unit is two tension springs 3 set up separately in 8 both sides of moving contact, and the insulating barrier 1 is equipped with can
For two hook holes 14 that two tension springs 3 hook, the shell 5 is equipped with two fixed columns hooked for two tension springs 3
501, one end of the tension spring 3 is hooked in the fixed column 501 of shell 5, and the other end is hooked in the hook hole 14 of insulating barrier 1.
Preferably, arc-chutes 9 are additionally provided in the shell 5, the arc-chutes 9 are located at top and the moving contact 8 of static contact 7
Side, including multiple arc extinguishing grid pieces 90 being stacked, the arc extinguishing grid pieces 90 lack close to one end of moving contact 8 equipped with arc extinguishing
Mouthful, the dynamic contact portion 81 of the moving contact 8 can stretch into arc extinguishing notch.
Preferably, the arc extinguishing notch includes the arch door shape root 91 being connected and squared ends 92, the arch door shape root
The width in portion 91 is less than the width of squared ends 92.
Preferably, the multiple arc extinguishing grid pieces 90 are obliquely installed, and arc extinguishing grid pieces 90 are close to one end of moving contact 8 to static contact
7 directions are forced down, and the other end of arc extinguishing grid pieces 90 is then raised upwards；It is oblique that the top of the locating convex block 504 of the shell 5 is equipped with support
Face 506, the arc extinguishing grid pieces 90 positioned at bottommost are placed on the supporting oblique surface 506, and the arc extinguishing grid pieces 90 of bottommost are shorter than it
Its arc extinguishing grid pieces 90.
The arc extinguishing structure of the breaker of the present invention connects the plastic housing open circuit of disjunction especially suitable for high voltage and high current
Device is coordinated by moveable insulating barrier and shell, and two independent insulation chambers will be divided into shell, realizes moving contact
It is come by completely insulated with static contact, effectively avoids the electric arc caused by arc energy is excessive from splashing, solving electric arc can not
Extinguishing or arc reignition problem, improve connection and the breaking capacity of breaker；Insulating barrier is same with the action of moving contact simultaneously
Moved further so that insulating barrier is more acurrate, barrier or withdraws between dynamic and static contact in time, improves closing of power circuit breaker and disjunction
The reliability of ability.
Description of the drawings
Fig. 1 is the structural schematic diagram of breaker under contact reprimand open state of the present invention；
Fig. 2 is the structural schematic diagram of breaker under "on" position of the present invention；
Fig. 3 is the explosive decomposition figure of breaker of the present invention；
Fig. 4 is the structural schematic diagram of half-shell of the present invention；
Fig. 5 is the structural schematic diagram of insulating barrier of the present invention；
Fig. 6 is the structural schematic diagram of static contact of the present invention；
Fig. 7 is the structural schematic diagram of moving contact of the present invention.
Specific implementation mode
Below in conjunction with the embodiment that attached drawing 1 to 7 provides, the arc extinguishing structure of the breaker further illustrated the present invention it is specific
Embodiment.The arc extinguishing structure of the breaker of the present invention is not limited to the following description.
As shown in Fig. 1-3 and Fig. 7, the arc extinguishing structure of breaker of the invention, including the shell 5 of breaker and installation
Moving contact 8, static contact 7 in shell 5 and insulating barrier 1, the middle part of the moving contact 8 are rotatably installed in shell by shaft 6
In body 5, the dynamic contact portion 81 of 8 one end of the moving contact is equipped with the 70 matched movable contact 80 of stationary contact with static contact 7, moves and touches
The driving portion 82 of first 8 other end is drivingly connected with insulating barrier 1, and the two sides of insulating barrier 1 are in contact with shell 5；Breaker
Moving contact 8 and static contact 7 reprimand when opening, moving contact 8 rotates, and moves the stationary contact 70 of the movable contact 80 and static contact 7 in contact portion 81
Separation, driving portion 82 drive insulating barrier 1 to move, and insulating barrier 1 coordinates 5 complete barrier of shell in the dynamic contact portion 81 of moving contact 8
Between static contact 7, two independent insulation chambers will be divided into shell, and moving contact and static contact be located at it is described
In two independent insulated cavity rooms.The arc extinguishing structure of the breaker of the present invention is connected especially suitable for high voltage and high current and is divided
Disconnected breaker of plastic casing is coordinated by moveable insulating barrier and shell 5, two independent insulated cavities will be divided into shell
Room realizes that moving contact is come with static contact by completely insulated, effectively avoids the electric arc caused by arc energy is excessive from splashing, solution
Electric arc of having determined can not extinguish or arc reignition problem, improves connection and the breaking capacity of breaker；Insulating barrier is servo-actuated simultaneously touches
The action of head and synchronizing moving so that insulating barrier is more acurrate, barrier or withdraws between dynamic and static contact in time, improves open circuit
Device is connected and the reliability of breaking capacity.
It should be noted that moving contact 8 is bound to occur to denounce to open when moving contact 8 is opened with the reprimand of static contact 7, static contact 7 also may be used
Reprimand can occur to open, there are the following two kinds may situation, the first situation is that static contact 7 has an anti-reprimand opening structure, moving contact 8 and quiet
Contact 7 can denounce open；The second situation is that static contact 7 is fixed, is fixed on motionless on shell 5.
As seen in figures 3-6, one end that the static contact 7 is equipped with stationary contact 70 is stationary contact portion 71, and the other end is wire connecting portion 72,
The shell 5 is equipped with the isolation chamber 502 for the fully wrapped around firmly stationary contact portion 71 of static contact 7, the top of the isolation chamber 502
Portion is isolated equipped with the evacuation notch 503 for being located at 80 lower section of movable contact, the connection of evacuation notch 503 in chamber 502 and shell 5,
The stationary contact portion 71 of the static contact 7 is placed in isolation chamber 502, and stationary contact 70 is placed in evacuation notch 503；Movable contact 80 with it is quiet
Insulating barrier 1 shelters from the evacuation notch 503 of isolation chamber 502 completely when contact 70 detaches.Static contact is placed in shell solely
In vertical separate cavities room, makes static contact that can completely completely cut off with moving contact and separate.
Specifically, the shell 5 is assembled by two half-shells 500 to intercouple, and the edge of the half-shell 500 is set
There is locating convex block 504, the locating convex block 504 is less than the first side wall 5001 of half-shell 500 to form the wire connecting portion with static contact 7
72 matched limit inclined-planes 505 are additionally provided with convex ribs 507, one end and the half-shell 500 of the convex ribs 507 in the half-shell 500
The connection of the first side wall 5001 is simultaneously concordant with the first side wall 5001, and the other end separately forms the evacuation with locating convex block 504 and lacks
Mouthfuls 503, surround the isolation chamber 502 between the first side wall 5001 of the half-shell 500, locating convex block 504 and convex ribs 507.
As shown in fig. 6, the concrete structure of static contact of the present invention, the stationary contact portion 71 of the static contact 7 is U-board, the U-shaped
For two side arms of plate in horizontal horizontal, intermediate arm erects setting, and the opening of U-board is towards wire connecting portion 72, and the outer profile of U-board
Face matches with the internal face of the first side wall 5001 and convex ribs 507 to be bonded；The wire connecting portion 72 is that matching is attached to the first side wall
Z-shaped three-stage folded plate on 5001 limit inclined-plane 505, the angle between adjacent two sections of the Z-shaped three-stage folded plate are
Obtuse angle, and side arm of the bottom section of Z-shaped three-stage folded plate with U-board in lower section is connected.
As shown in Figs. 1-5, the driving structure between moving contact and insulating barrier of the invention, the one of the insulating barrier 1
End is the partition portion 11 for separating moving contact 8 and static contact 7, and the other end is driven portion 13, the driving portion 82 of the moving contact 8
It is drivingly connected by catch bar 2 and insulating barrier 1, one end of the catch bar 2 is connected on the driving portion 82 of moving contact 8, pushes away
The other end of lever 2 is then abutted against with the driven portion 13 of insulating barrier 1.It is simple in structure, by catch bar realization moving contact and absolutely
Transmission between edge partition board so that layout is compacter rationally, and transmission is more accurate, stablizes.
Preferably, as shown in figure 5, the insulating barrier 1 is arranged between moving contact 8 and static contact 7, the catch bar 2
It is placed in the rear of the insulating barrier 1 i.e. right side side of insulating barrier 1 as shown in the figures 1 and 2, the partition portion 11 of insulating barrier 1 is level
Plate, driven portion 13 is vertical plate, and insulating barrier 1 further includes interconnecting piece 12, and the interconnecting piece 12 is to tilt to be connected to partition portion
Hang plate between 11 and driven portion 13.Partition portion 11, interconnecting piece 12 and the driven portion 13 of insulating barrier 1 integrally connected successively,
The driven portion 13 is equal with the width of interconnecting piece 12, and less than the width in partition portion 11.The structure of insulating barrier is simple, is convenient for
It manufactures, movement is light, quick.The concrete structure of the insulating barrier 1 of the present invention includes but not limited to that above-mentioned three-stage is rolled over
Harden structure, certainly, insulating barrier 1 can also be other structures, only need to ensure its partition portion 11 can travel forward along track, driven portion
13 can receive stress, interconnecting piece 12 plays the role of connecting partition portion 11 and driven portion 13, such as insulating barrier 1 can be arc
Plate or other sketch plates.
Further, the end of the catch bar 2 is equipped with 13 matched promotion of the driven portion protrusion with insulating barrier 1
20, the promotion protrusion 20 for bumping square or is illustrated in figure 2 circular arc convex block as shown in Figure 1.The promotion of bumping square formula is convex
It rises, pushes more efficient；The promotion protrusion of circular arc convex block formula, transmission more uniformly links up, stability is high.Certainly, of the invention
It includes but not limited to bumping square and circular arc convex block to push the concrete structure of protrusion 20, can also be other structures such as polygon
Block.
As shown in figure 3, being connected by axis pin 21 between the catch bar 2 and moving contact 8, the driving portion of the moving contact 8
82 and catch bar 2 end on be equipped with and 21 matched pin shaft hole 210 of axis pin.Preferably, the quantity of the catch bar 2 is
Two, one end of two catch bars 2 is clamped in 82 both sides of driving portion of moving contact 8, and axis pin 21 is inserted into pin shaft hole 210 to realize
Being fixedly connected between two catch bars 2 and moving contact 8；The other ends of two catch bars 2 act on simultaneously the same insulation every
The driven portion 13 of plate 1.Certainly, catch bar 2 can also be with 82 integrally connected of the driving portion of moving contact 8, not as one
Or several individual parts.Pin shaft connection structure between the catch bar and moving contact of the present invention, compared to one between the two
Connection, make moving contact that can still be manufactured according to original standard component, to batch type production bring it is convenient, while catch bar with move
Assembling structure between contact is simple, and manual or automatic makeup is matched can simple realization.
As seen in figures 3-6, the guide frame of insulating barrier movement of the invention is arranged with two use on the shell 5
It is respectively provided with a guide groove 4, the both sides of the insulating barrier 1 in the guide groove 4 that insulating barrier 1 is oriented to, i.e. in two half-shells 500
Side is removably inserted within respectively in guide groove 4.The guide groove 4 is horizontally disposed, and suitable with 11 phase of partition portion of insulating barrier 1
Match.The setting of guide groove plays guiding and standardization role to the movement of insulating barrier, improves insulating barrier to dynamic and static contact
Separate effect.
Specifically, the guide groove 4 is arranged on the locating convex block 504 of shell 5, and insulating barrier is used for by sequentially connected
The guiding wall surface 41 of 1 mobile guide, for limit insulating barrier 1 movement final position backstop wall surface 42 and for limiting
The limit wall surface 43 that insulating barrier 1 processed is offset up surrounds, and the either flush for being oriented to wall surface 41 and convex ribs 507 is with jointly right
Guiding role is played in the movement of insulating barrier 1.The top surface of the stationary contact 70 is concordant with limit wall surface 43.The backstop side of the present invention
Wall 40 is arranged in the end of guide groove 4, and certainly, a certain position in guide groove 4 can also be arranged in backstop side wall 40.Shell 5
Be oriented to groove sidewall matched with insulating barrier may be formed at dynamic and static contact between completely enclose partition barrier, to play
Separate dynamic and static contact entirely；Also, it is directly abutted with shell 5 compared to insulating barrier, the present invention is arranged symmetrically, and there are two be oriented to
Misplace stacking between the side wall of slot, insulating barrier and guide groove, can both realize to form completely enclosed partition barrier, and allow simultaneously
There is gap between insulating barrier and the panel of shell 5, avoids that the movement of insulating barrier is caused to hinder.
As shown in Figure 3 and Figure 4, the mounting structure of moving contact of the present invention, the half-shell 500 of the shell 5 is equipped in carrying
The annulus protrusion 509 of heart vestibule 508, the annulus protrusion 509 are connected with convex ribs 507, and contact support is additionally provided in shell 5
10, the contact supports 10 both ends to may be rotatably mounted at respectively in the center bore 508 of two half-shells 500, and contact supports 10
Middle part be equipped with and be used to support the brace groove of moving contact 8, the middle part of the moving contact 8 is placed in the brace groove that contact supports 10
It is interior, it supports 10 to be equipped with through moving contact 8 and contact and is fixedly mounted on shell with 6 matched shaft hole 60 of shaft, the shaft 6
On 5, the moving contact 8 and contact support that 10 are rotatably installed in by shaft hole 60 in shaft 6.
As shown in figure 3, being additionally provided with arc-chutes 9 in the shell 5, the arc-chutes 9, which are located at the top of static contact 7 and move, to be touched
First 8 side, including multiple arc extinguishing grid pieces 90 being stacked, the arc extinguishing grid pieces 90 are equipped with close to one end of moving contact 8 to go out
The dynamic contact portion 81 of arc notch, the moving contact 8 can stretch into arc extinguishing notch, and the arc extinguishing notch includes the arch door shape root being connected
Portion 91 and squared ends 92, the width of the arch door shape root 91 are less than the width of squared ends 92.The arc extinguishing grid pieces 90 incline
Tiltedly setting, arc extinguishing grid pieces 90 force down downwards close to one end of moving contact 8 to 7 direction of static contact, the other end of arc extinguishing grid pieces 90
Then raise upwards；The top of the locating convex block 504 of the shell 5 is equipped with supporting oblique surface 506, is located at the arc extinguishing grid pieces 90 of bottommost
It is placed on the supporting oblique surface 506, and the arc extinguishing grid pieces 90 of bottommost match with supporting oblique surface 506, slightly longer than supporting oblique surface
506 and other arc extinguishing grid pieces 90 are significantly shorter than, play the role of striking and cut arc and evacuation insulating barrier 1.
As depicted in figs. 1 and 2, the resetting structure of insulating barrier of the invention is set between the insulating barrier 1 and shell 5
It is useful for resetting the return unit of insulating barrier 1；When breaker closing, moving contact 8 rotates, work of the driving portion 82 to insulating barrier 1
It firmly removes, insulating barrier 1 resets under the action of return unit and withdraws the contact area between moving contact 8 and static contact 7, moves
Movable contact 80 in contact portion 81 is contacted with the stationary contact 70 of static contact 7.The insulating barrier 1 withdraw moving contact 8 and static contact 7 it
Between contact area refer to being dielectrically separated from the closed action between moving contact 8 and static contact 7 not cause to hinder.
Further, the return unit is two tension springs 3 set up separately in 8 both sides of moving contact, and the insulating barrier 1 is equipped with
For two hook holes 14 that two tension springs 3 hook, the shell 5 is equipped with two fixed columns hooked for two tension springs 3
501, one end of the tension spring 3 is hooked in the fixed column 501 of shell 5, and the other end is hooked in the hook hole 14 of insulating barrier 1.Tool
Body, described two hook holes 14 are separately positioned on the partition portion 11 of insulating barrier 1 in that one end being connect with interconnecting piece 12
Both sides；Described two fixed columns 501 are symmetrical and set up separately in two half-shells 500 of shell 5.The catch bar 2 is touched with dynamic
First 8 are located between two tension springs 3.It should be noted that as shown in the figures 1 and 2, insulating barrier 1 is moved to the left as the direction that moves forward, to
It moves right to reset direction.
As shown in Figure 1, the breaker of the present invention, when because of short-circuit current disjunction, moving contact 8 is acted in actuating mechanism
Under start to open at, because high voltage generates burning arc between moving contact 8 and static contact 7, catch bar 2 is with 6 up time around the shaft of moving contact 8
Needle is rotated and is fast moved, to push the partition portion 11 of insulating barrier 1 to move forward along guide groove 4, until moving to guide groove end,
Partition moving contact 8 and static contact 7, electric arc are detached by partition completely, close the circuit of static contact 7, realize fast arc extinction.
As shown in Fig. 2, the breaker of the present invention is in "on" position, moving contact 8 is in closed state, and insulating barrier 1 exists
It is resetted under the action of the return spring force of double tension springs 3, the driving portion 82 of insulating barrier 1 offsets with the promotion protrusion 20 of catch bar 2
It connects, the mobile initial position of the raised 20 pairs of insulating barriers 1 of promotion of catch bar 2 plays position-limiting action.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (12)
1. a kind of arc extinguishing structure of breaker, it is characterised in that：Shell (5) including breaker and in shell (5)
Moving contact (8), static contact (7) and insulating barrier (1), the middle part of the moving contact (8) is rotatably installed in shell by shaft (6)
In body (5), the dynamic contact portion (81) of described moving contact (8) one end is equipped with matched dynamic with the stationary contact (70) of static contact (7)
Contact (80), the driving portion (82) and insulating barrier (1) of moving contact (8) other end are drivingly connected；The moving contact (8) of breaker with
When static contact (7) reprimand is opened, the stationary contact (70) of the movable contact (80) and static contact (7) in contact portion (81) is moved in moving contact (8) rotation
Separation, driving portion (82) drive insulating barrier (1) mobile, and insulating barrier (1) coordinates shell (5) barrier completely in moving contact (8)
Dynamic contact portion (81) and static contact (7) between, two independent insulation chambers, and moving contact and static contact will be divided into shell
It is located in two independent insulated cavity rooms.
2. the arc extinguishing structure of breaker according to claim 1, it is characterised in that：One end of the insulating barrier (1) is
Partition portion (11) for separating moving contact (8) and static contact (7), the other end are driven portion (13), the drive of the moving contact (8)
Dynamic portion (82) are drivingly connected by catch bar (2) and insulating barrier (1), and one end of the catch bar (2) is connected to moving contact (8)
Driving portion (82) on, the other end of catch bar (2) is then abutted against with the driven portion of insulating barrier (1) (13).
3. the arc extinguishing structure of breaker according to claim 2, it is characterised in that：Insulating barrier (1) setting is dynamic
Between contact (8) and static contact (7), the catch bar (2) is placed in the rear of insulating barrier (1), the partition portion of insulating barrier (1)
(11) it is level board, driven portion (13) is vertical plate, and insulating barrier (1) further includes interconnecting piece (12), the interconnecting piece (12)
To tilt the hang plate being connected between partition portion (11) and driven portion (13).
4. the arc extinguishing structure of breaker according to claim 1, it is characterised in that：The static contact (7) is equipped with stationary contact
(70) one end is stationary contact portion (71), and the other end is wire connecting portion (72), and the shell (5) is equipped with for fully wrapped around firmly static contact
(7) the isolation chamber (502) in stationary contact portion (71), the top of the isolation chamber (502), which is equipped with, to be located at below movable contact (80)
Evacuation notch (503), the stationary contact portion (71) of the static contact (7) is placed in isolation chamber (502), and stationary contact (70), which is placed in, to be kept away
Make notch (503) interior；Insulating barrier (1) shelters from isolation chamber (502) completely when movable contact (80) is detached with stationary contact (70)
Evacuation notch (503).
5. the arc extinguishing structure of breaker according to claim 4, it is characterised in that：The shell (5) is by what is intercoupled
Two half-shells (500) are assembled, and the edge of the half-shell (500) is equipped with locating convex block (504), the locating convex block
(504) it is oblique with the matched limit of the wire connecting portion (72) of static contact (7) to be formed to be less than the first side wall (5001) of half-shell (500)
Face (505) is additionally provided with convex ribs (507), first side of one end and half-shell (500) of the convex ribs (507) on the half-shell (500)
Wall (5001) connection is simultaneously concordant with the first side wall (5001), and the other end separately forms the evacuation with locating convex block (504) and lacks
Mouthful (503), surrounded between the first side wall (5001) of the half-shell (500), locating convex block (504) and convex ribs (507) described in every
From chamber (502).
6. according to the arc extinguishing structure of any breakers of claim 1-5, it is characterised in that：It is symmetrical on the shell (5)
If there are two the guide groove (4) being oriented to for insulating barrier (1), the two sides of the insulating barrier (1) are movably inserted respectively
Enter in guide groove (4).
7. the arc extinguishing structure of breaker according to claim 6, it is characterised in that：The guide groove (4) is arranged in shell
(5) on locating convex block (504), by it is sequentially connected for the guiding wall surface (41) of insulating barrier (1) mobile guide, for limiting
The backstop wall surface (42) of the mobile final position of insulating barrier (1) processed and the limit offset up for limiting insulating barrier (1)
Position wall surface (43) surrounds, the either flush for being oriented to wall surface (41) and convex ribs (507).
8. according to the arc extinguishing structure of any breakers of claim 1-5, it is characterised in that：The insulating barrier (1) with
The return unit for resetting insulating barrier (1) is equipped between shell (5)；When breaker closing, moving contact (8) rotation, driving portion
(82) active force of insulating barrier (1) is removed, insulating barrier (1) resets under the action of return unit and withdraws moving contact (8)
With the contact area between static contact (7), the movable contact (80) and the stationary contact (70) of static contact (7) moved in contact portion (81) connects
It touches.
9. the arc extinguishing structure of breaker according to claim 8, it is characterised in that：The return unit is to set up separately in moving contact
(8) two tension springs (3) of both sides, the insulating barrier (1) are equipped with two hook holes hooked for two tension springs (3)
(14), the shell (5) is equipped with two fixed columns (501) hooked for two tension springs (3), one end of the tension spring (3)
It is hooked in the fixed column (501) of shell (5), the other end is hooked in the hook hole (14) of insulating barrier (1).
10. according to the arc extinguishing structure of any breakers of claim 1-5, it is characterised in that：It is also set in the shell (5)
There are arc-chutes (9), the arc-chutes (9) to be located at the top of static contact (7) and the side of moving contact (8), including multiple stackings are set
The arc extinguishing grid pieces (90) set, the arc extinguishing grid pieces (90) are equipped with arc extinguishing notch, the moving contact close to one end of moving contact (8)
(8) dynamic contact portion (81) can stretch into arc extinguishing notch.
11. the arc extinguishing structure of breaker according to claim 10, it is characterised in that：The arc extinguishing notch includes being connected
Arch door shape root (91) and squared ends (92), the width of the arch door shape root (91) be less than the width of squared ends (92)
Degree.
12. the arc extinguishing structure of breaker according to claim 10, it is characterised in that：The multiple arc extinguishing grid pieces (90) are inclined
Tiltedly setting, arc extinguishing grid pieces (90) are forced down close to one end of moving contact (8) to static contact (7) direction, arc extinguishing grid pieces (90) it is another
It then raises upwards at end；The top of the locating convex block (504) of the shell (5) is equipped with supporting oblique surface (506), positioned at going out for bottommost
Arc grid (90) is placed on the supporting oblique surface (506), and the arc extinguishing grid pieces (90) of bottommost are shorter than other arc extinguishing grid pieces
(90)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810647197.6A CN108766848A (en) | 2018-06-21 | 2018-06-21 | The arc extinguishing structure of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810647197.6A CN108766848A (en) | 2018-06-21 | 2018-06-21 | The arc extinguishing structure of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108766848A true CN108766848A (en) | 2018-11-06 |
Family
ID=63976319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810647197.6A Pending CN108766848A (en) | 2018-06-21 | 2018-06-21 | The arc extinguishing structure of breaker |
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| Country | Link |
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| CN (1) | CN108766848A (en) |
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| CN110931327A (en) * | 2019-12-31 | 2020-03-27 | 邹耿彪 | Baffle arc control device and have baffle arc control device's circuit breaker |
| CN112185719A (en) * | 2019-07-05 | 2021-01-05 | 北京京人电器有限公司 | Load switch |
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