CN207529897U - Electric arc separating mechanism and breaker of plastic casing - Google Patents
Electric arc separating mechanism and breaker of plastic casing Download PDFInfo
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- CN207529897U CN207529897U CN201721503058.3U CN201721503058U CN207529897U CN 207529897 U CN207529897 U CN 207529897U CN 201721503058 U CN201721503058 U CN 201721503058U CN 207529897 U CN207529897 U CN 207529897U
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Abstract
The utility model is related to Low Voltage Electrical Apparatus, and in particular to a kind of electric arc separating mechanism and breaker of plastic casing, electric arc separating mechanism include contact system, and contact system includes the moving contact equipped with movable contact and the static contact equipped with stationary contact；Further include electric arc partition panel, moving contact and electric arc partition panel driving cooperation and synchronization action；When the movable contact is in the close position, electric arc partition panel is located at stationary contact side, when movable contact is in disjunction position, electric arc partition panel is located at the completely obscured stationary contact in surface of stationary contact, when short-circuit, moving contact is driven movable contact to be moved to disjunction position by closed position by electrodynamic repulsion force, while electric arc partition panel is moved to by stationary contact side right over stationary contact；The breaker of plastic casing includes the electric arc separating mechanism；The electric arc separating mechanism of the utility model, simple in structure, arc extinguishing efficiency and arc extinction performance are good；The breaker of plastic casing including the electric arc separating mechanism, significantly improves the breaking capacity and service life of breaker of plastic casing.
Description
Technical field
The utility model is related to Low Voltage Electrical Apparatus, and in particular to a kind of electric arc separating mechanism and one kind include the electric arc
The breaker of plastic casing of separating mechanism.
Background technology
Breaker of plastic casing includes single-break infrastructure product and double-breakpoint structure product, and (single-break refers to breaker of plastic casing
Each pole only there are one moving contact and a static contact, supply voltage be applied to one group move/static contact on), single-break structure
Breaker of plastic casing is compared with the breaker of plastic casing of double-breakpoint structure：The breaker of plastic casing of double-breakpoint structure, since its is each extremely
Move/static contact equipped with two groups, make supply voltage divide equally move at this two groups/static contact on so that the electric arc generated during dynamic/quiet disjunction
Easily extinguish, the breaking capacity of breaker of plastic casing can be effectively improved, still, the structure of the breaker of plastic casing of double-breakpoint structure is answered
Miscellaneous, homogeneity of product is poor, and production cost is higher；And the breaker of single-break structure, there is simple in structure, assembling letter
Just, the advantages of low production cost, but due to limiting structure-design technique, breaking capacity is difficult to improve.
Furthermore due to the keen competition in breaker of plastic casing market, in order to improve the competitiveness of itself product, each plastic housing open circuit
Device manufacturing enterprise is also constantly reducing life by reducing the means such as material property grade, the thickness for reducing structure division and specification
Cost is produced, but affects the Performance And Reliability of breaker of plastic casing in turn.
In order to make the existing good performance of breaker of plastic casing, there is relatively low production cost again, most enterprise passes through improvement
The breaker of plastic casing of single-break structure, to improve its breaking capacity, the method for improvement has：Improve the operating mechanism of breaker of plastic casing
Opening speed, utilize the measures such as magnetic blow-out, air-blowing, aerogenesis accelerate arc transfer to arc-chutes rate and strengthen arc extinguishing grid pieces
To effective cutting of electric arc and cooling provision etc., although making the breaking capacity of the breaker of plastic casing of single-break structure to a certain degree
On promoted, but the breaking capacity of the breaker of plastic casing of incomparable double-breakpoint structure always, it is impossible to ensure electric arc by one
Secondary complete extinguishing, often occurs arc reignition, leads to happening for disjunction failure, for example, when breaker of plastic casing disjunction is critical
During electric current, since current value is smaller, magnetic blow-out, air-blowing are weak, and electric arc is difficult to rapidly enter in arc-chutes and be off, and directly results in electric arc
Fall time is obviously prolonged or even arc reignition or what cannot be extinguished happen, it is impossible to meet protection electric system and equipment
Requirement.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of electric arc separating mechanism, structure letter
Singly, the electrodynamic repulsion force being subject to using moving contact during short circuit realizes the synchronization action of moving contact and electric arc partition panel, because of moving contact
The electric arc generated is detached with static contact within the extremely short time to be separated, and substantially increases arc extinguishing efficiency and arc extinction performance；Also carry
For a kind of breaker of plastic casing, including the electric arc separating mechanism, the breaking capacity and service life of breaker of plastic casing are significantly improved.
To achieve the above object, the utility model employs following technical solution：
A kind of electric arc separating mechanism, including contact system, contact system includes the moving contact 2 equipped with movable contact 21 and sets
There is the static contact 1 of stationary contact 11；
Further include electric arc partition panel 50, moving contact 2 and the driving of electric arc partition panel 50 cooperation and synchronization action；The movable contact
21 it is in the close position when, movable contact 21 is closed with stationary contact 11, and electric arc partition panel 50 is located at 11 side of stationary contact, movable contact 21
During in disjunction position, movable contact 21 is disconnected with stationary contact 11, and the surface that electric arc partition panel 50 is located at stationary contact 11 hides completely
Cover stationary contact 11, during contact system short circuit current flow, moving contact 2 is driven movable contact 21 to be moved by closed position by electrodynamic repulsion force
To disjunction position, while electric arc partition panel 50 is moved to by 11 side of stationary contact right over stationary contact 11, to separate movable contact 21
The electric arc of generation is detached with stationary contact 11.
Preferably, the moving contact 2 further includes moving contact conductive plate 20, moving contact conductive plate 20 include conductive plate left end and
Conductive plate right end, conductive plate left end are equipped with movable contact 21, and conductive plate right end coordinates with the driving of electric arc partition panel 50；Further include connecting rod
4,4 one end of connecting rod is hinged with conductive plate right end, and the other end is hinged with electric arc partition panel 5, and moving contact conductive plate 20 rotates, and leads simultaneously
Battery plate right end drives electric arc partition panel 50 to move horizontally by connecting rod 4.
Preferably, the electric arc partition panel 50 includes separating the partition panel mainboard 500 of electric arc and being arranged on partition
The partition panel connector 501 of 500 one end of plate mainboard, partition panel connector 501 are hinged with connecting rod 4.
Preferably, the moving contact 2 further includes moving contact conductive plate 20, moving contact conductive plate 20 include conductive plate left end and
Conductive plate right end, conductive plate left end are equipped with movable contact 21, and conductive plate right end coordinates with the driving of electric arc partition panel 50；Further include fixation
The baffle 52 of setting, electric arc partition panel 50 include being arranged on the coupled slide-bar 54 of one end, slide-bar 54 pass through baffle 52 with
It is slidably matched, and partition panel resetting spring 53 is arranged on slide-bar 54,53 one end of partition panel resetting spring is connected with baffle 52, another
End is connected with the free end of slide-bar 54.
Preferably, the supporter 51 being slidably matched with electric arc partition panel 50 is further included, supporter 51 includes being arranged on stationary contact
The supporter sliding rail 510 that 11 both sides of point are slidably matched with electric arc partition panel 50.
Preferably, the sliding rail boss 512 that setting is slidably matched with electric arc partition panel 50 on the supporter sliding rail 50, sliding rail
Boss 512 is hemispherical boss.
Preferably, the moving contact conductive plate 21 of the moving contact 2 include the first plate 201, be connected with the first plate 201 second
Plate 202, the third plate 203 being connected with the second plate 202 and the 4th plate 204 being connected with third plate 203, movable contact 21 are arranged on
On first plate 201, the first plate 201 is axial parallel with third plate 203.
Preferably, the static contact 1 includes static contact conductive sheet 10 and the stationary contact being arranged on static contact conductive sheet 10
Point 11, static contact conductive sheet 10 are U-shaped structure, and one end of U-shaped structure sets stationary contact 11, and the other end connects with static contact
Line plate is connected.
Preferably, it further includes contact and supports 70, the moving contact conductive plate 20 of moving contact 2 passes through 6 turns of fixed spring and shaft
Dynamic to be arranged in moving contact pilot hole, moving contact 2 includes moving contact conductive plate 20, and moving contact conductive plate 20 includes conductive plate left end
With conductive plate right end, conductive plate left end is equipped with movable contact 21, and conductive plate right end drives phase by connecting rod 4 and electric arc partition panel 50
Even；
During the contact system short circuit current flow, the moving contact conductive plate 20 of moving contact 2 under the action of electrodynamic repulsion force,
It is rotated rapidly for axis with shaft 6, fixed spring is overcome to support 70 rotations, conductive plate left end to the elastic force opposing contact of moving contact 2
Movable contact 21 is driven to be disconnected rapidly with stationary contact 11, while conductive plate right end drives the partition of electric arc partition panel 50 by connecting rod 4
Plate mainboard 500 is moved quickly to 11 top masking stationary contact 11 of stationary contact.
A kind of breaker of plastic casing, including the electric arc separating mechanism.
The electric arc separating mechanism of the utility model, including contact system and electric arc partition panel, contact system includes moving contact
And static contact, moving contact and electric arc partition panel driving cooperation and synchronization action, during contact system short circuit current flow, moving contact by
Electrodynamic repulsion force is denounceed out, completely obscured stationary contact above the no-delay stationary contact for being moved to static contact that electric arc partition panel also synchronizes
Point, using short circuit when big electrodynamic repulsion force, separate in time and effectively electric arc, be remarkably improved the efficiency and arc extinction performance of arc extinguishing,
When especially flowing through critical current in contact system, the electric arc separating mechanism of the utility model still can timely and effectively separate
Electric arc shortens the quenching time, avoids arc reignition；The electric arc separating mechanism of the utility model also has simple in structure, assembling letter
Just the advantages of and being readily produced.The breaker of plastic casing of the utility model includes the electric arc separating mechanism, breaks not increasing plastic housing
Under the premise of road body product and excessive increase parts, you can significantly improve the breaking capacity of breaker of plastic casing, be conducive to extend
The service life of breaker of plastic casing.In addition, the supporter includes the supporter sliding rail being slidably matched with electric arc partition panel, make electricity
There are gaps between arc partition panel and the stationary contact of static contact, avoid the high-temperature damage electric arc partition panel of stationary contact, make electric arc
Its normal work of partition panel deformation effect happens；The effect of support electric arc partition panel is also acted as, prevents it because by gravity
Influence drops and encounters the right side of stationary contact 11, can not cover right over stationary contact 11.The plastic housing open circuit of the utility model
Device includes the arc quenching system coordinated with electric arc separating mechanism, is conducive to further improve the breaking capacity and arc extinguishing of breaker of plastic casing
Performance.
Description of the drawings
Fig. 1 is the structure diagram of the closed state of the first embodiment of the utility model electric arc separating mechanism；
Fig. 2 is the structure diagram of the off-state of the first embodiment of the utility model electric arc separating mechanism；
Fig. 3 is the structure diagram of the closed state of second of embodiment of the utility model electric arc separating mechanism；
Fig. 4 is the structure diagram of the off-state of second of embodiment of the utility model electric arc separating mechanism；
Fig. 5 is the structure diagram of the part A of the utility model Fig. 4；
Fig. 6 is another structural representation of the closed state of the first embodiment of the utility model electric arc separating mechanism
Figure；
Fig. 7 is the structure diagram of the first embodiment of the utility model electric arc partition panel；
Fig. 8 is the structure diagram of the utility model connecting rod；
Fig. 9 is the structure diagram of the utility model supporter；
Figure 10 is the structure diagram of the utility model static contact；
Figure 11 is the structure diagram of the utility model moving contact；
Figure 12 is another structural representation of the off-state of the first embodiment of the utility model electric arc separating mechanism
Figure；
Figure 13 is the structure diagram of the closed state of the utility model breaker of plastic casing；
Figure 14 is the structure diagram of the off-state of the utility model breaker of plastic casing；
Figure 15 is the structure diagram of second of embodiment of the utility model electric arc partition panel.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1-15 is provided, further illustrate the utility model electric arc separating mechanism it is specific
Embodiment.The electric arc separating mechanism of the utility model is not limited to the following description.
The electric arc separating mechanism of the utility model, including contact system, contact system includes dynamic equipped with movable contact 21
Contact 2 and the static contact 1 equipped with stationary contact 11；
Further include electric arc partition panel 50, moving contact 2 and the driving of electric arc partition panel 50 cooperation and synchronization action；The movable contact
21 it is in the close position when, movable contact 21 is closed with stationary contact 11, and electric arc partition panel 50 is located at 11 side of stationary contact, movable contact 21
During in disjunction position, movable contact 21 is disconnected with stationary contact 11, and the surface that electric arc partition panel 50 is located at stationary contact 11 hides completely
Cover stationary contact 11, during contact system short circuit current flow, moving contact 2 is driven movable contact 21 to be moved by closed position by electrodynamic repulsion force
To disjunction position, while electric arc partition panel 50 is moved to by 11 side of stationary contact right over stationary contact 11, to separate movable contact 21
The electric arc of generation is detached with stationary contact 11.
Existing single-breakpoint molded case circuit breaker (single-break refer to each pole of breaker of plastic casing only there are one moving contact and
One static contact, supply voltage be applied to one group move/static contact on), breaking capacity is poor, for improve breaking capacity, use more with
Lower method：The speed that operating mechanism is opened is improved, accelerates arc transfer to arc-chutes using measures such as magnetic blow-out, air-blowing, aerogenesis
Efficiency strengthens arc extinguishing grid pieces to effective cutting of electric arc and cooling etc., above method for breaker of plastic casing breaking capacity
Improvement is not good enough；And disjunction effect of the breaker of plastic casing in critical current is especially bad, because of current value at this time
Small, magnetic blow-out, air-blowing are weak, and electric arc is difficult to the feelings for into arc-chutes, causing the quenching time long or arc reignition cannot even extinguish
Condition occurs.
The electric arc separating mechanism of the utility model, including contact system and electric arc partition panel, contact system includes moving contact
And static contact, moving contact and electric arc partition panel driving cooperation and synchronization action, during contact system short circuit current flow, moving contact by
Electrodynamic repulsion force is denounceed out, completely obscured stationary contact above the no-delay stationary contact for being moved to static contact that electric arc partition panel also synchronizes
Point separates in time and effectively electric arc, is remarkably improved the efficiency and arc extinction performance of arc extinguishing, is especially flowed through in contact system critical
During electric current, the electric arc separating mechanism of the utility model still can timely and effectively separate electric arc, shorten the quenching time, avoid electricity
Arc is restriked；The electric arc separating mechanism of the utility model also has the advantages that simple in structure, assembling is easy and is readily produced.
The electric arc separating mechanism of the utility model can be widely applied to breaker of plastic casing, disconnecting switch, on-load switch and turn
It changes in the electrical equipments such as switch, key point is to realize synchronization action of the moving contact 2 with electric arc partition panel 50 of contact system,
During using short circuit big electrodynamic repulsion force rather than thread off when operating mechanism spring reset force, that is to say moving contact 2 action with it is quiet
While contact 1 detaches, electric arc partition panel 50 also hides completely to movement right over static contact 1 and by the stationary contact 11 of static contact 1
It covers, to realize the timely and effective partition of electric arc, the driving to moving contact 1 and electric arc partition panel 50 and connection in the following is closed
System is illustrated, but is not limited in the description of the following contents, it is all make moving contact 1 and electric arc partition panel 1 it
Between there are driving relationship and the mechanical structures or other modes of the synchronization action both realized, the guarantor of the utility model should all be fallen within
Protect range.
As shown in Figure 1, the embodiment of the utility model breaker of plastic casing, breaker of plastic casing includes handle, operating mechanism, takes off
Buckle mechanism and contact system, contact system include moving contact 2 and static contact 1, and static contact 1 is fixedly mounted in housing, moving contact 2
It is supported on 70 mounted on contact, contact supports 70 middle part setting moving contact pilot holes, and the moving contact conductive plate 20 of moving contact 2 passes through
Fixed spring and shaft 6 are rotatably arranged in moving contact pilot hole, and handle is connect with operating mechanism, and operating mechanism is supported with contact
70 connections, handle support 70 rotations by contact mechanism band moving contact, drive moving contact 2 movable contact 21 and static contact 1 it is quiet
Contact 11 contacts and coordinates.Breaker of plastic casing further includes the arc quenching system 8 being arranged on the right side of contact system and electric arc partition panel 50,
Moving contact 2 is slidably arranged in moving contact 2 and static contact with the driving of electric arc partition panel 50 cooperation and synchronization action, electric arc partition panel 50
Between 1；Arc quenching system 8 includes the arc extinguishing grid pieces of multi-disc parallel interval setting, and electric arc partition panel 50 is rapid after electric arc is separated
Arc quenching system 8 is imported, is conducive to further enhance the arc extinguishing efficiency and arc extinction performance of the breaker of plastic casing of the utility model.
It is the first embodiment of the electric arc separating mechanism of the utility model as shown in Fig. 1,2,6 and 12.
As shown in figs. 1 and 6, the electric arc separating mechanism of the utility model includes contact system, connecting rod 4, electric arc partition panel 50
And supporter 51.
The static contact 1 that the contact system includes moving contact 2 and is used cooperatively with being arranged on 2 lower section of moving contact with it,
Moving contact 2 includes moving contact conductive plate 20 and is arranged on the movable contact 21 of 20 left end of moving contact conductive plate, moving contact conductive plate
20 middle parts are rotatably installed in shaft 6, including the conductive plate left end equipped with movable contact 21 and the conductive plate hinged with connecting rod 4
Right end, static contact 1 include static contact conductive sheet 10 and the stationary contact 11 for being arranged on 10 one end of static contact conductive sheet, supporter 51
Including the supporter sliding rail 510 that the partition panel mainboard 500 for being arranged on 11 both sides of stationary contact and electric arc partition panel 50 is slidably matched, connect
4 left end of bar and the right end of electric arc partition panel 50 are hinged, and 4 right end of connecting rod is hinged with conductive plate right end, the partition of electric arc partition panel 50
500 left end of plate mainboard, which is taken, to be put in 510 upside of supporter sliding rail of supporter 51.
Preferably, direction as shown in Figure 7, the electric arc partition panel 50 include partition panel mainboard 500 and are arranged on partition
The partition panel connector 501 of 500 right end of plate mainboard, the 501 front side setting of partition panel chain structure is for the partition panel hinged with connecting rod 4
Connecting shaft 502.
As shown in figs. 1 and 6, the electric arc separating mechanism of the utility model is in closed state：The movable contact of the moving contact 2
21 is in the close position, and movable contact 21 is closed with stationary contact 11, and the partition panel of electric arc partition panel 50 turns 500 left ends and is located at static contact
11 right side.As indicated in figs. 2 and 12, the electric arc separating mechanism of the utility model is off：The dynamic of the moving contact 2 touches
Point 21 is disconnected in disjunction position, movable contact 21 with stationary contact 11, and the partition panel mainboard 500 of electric arc partition panel 50 is located at stationary contact
The 11 completely obscured stationary contact 11 in surface.
In the contact system during short circuit current flow, the electric arc separating mechanism of the utility model is turned rapidly by closed state
Off-state is shifted to, the moving contact conductive plate 20 of moving contact 2 is under the action of electrodynamic repulsion force, with shaft 6 for the rapid up time of axis
Needle rotates, and the elastic force opposing contact of 2 fixed spring of moving contact is overcome to support rotation, conductive plate left end drives movable contact 21 and stationary contact
Point 11 disconnects rapidly, while conductive plate right end drives the partition panel mainboard 500 of electric arc partition panel 50 to be moved quickly to by connecting rod 4
The 11 completely obscured stationary contact 11 in top of stationary contact, the electric arc between movable contact 21 and stationary contact 11 is timely and effectively separated.Together
When, after tripping mechanism detects short circuit current, trigger action mechanical unlocking, band moving contact is supported and moving contact 2 divides with stationary contact 1
It is disconnected.The maximum of the present embodiment is characterized by moving contact 2 and directly drives connecting rod 4 electric arc partition panel 50 is made quickly to slip into dynamic touch
Between first 2 and stationary contact 1, the reset force of operating mechanism spring when making full use of electrodynamic repulsion force big during short circuit rather than threading off.
The tripping mechanism can be magnetictrip, make circuit breaker tripping by the lock of its striker impact operating mechanism, this category
It is repeated no more in the prior art.
As shown in Figures 3 and 4, second of embodiment for the electric arc separating mechanism of the utility model.
The electric arc separating mechanism of the utility model includes contact system, shaft 6, baffle 52, partition panel resetting spring 53, electricity
Arc partition panel 50 and supporter 51.
The shaft 6 and baffle 52 are fixedly installed, and baffle 52 can be the convex ribs of shell structure, and contact system includes dynamic
Contact 2 and the static contact 1 being used cooperatively with being arranged on the lower section of moving contact 2 with it, moving contact 2 including moving contact conductive plate 20 with
And movable contact 21,20 middle part of moving contact conductive plate is pivotally mounted by shaft 6, and moving contact conductive plate 20 includes being equipped with movable contact 21
Conductive plate left end and with electric arc partition panel 50 driving cooperation conductive plate right end, static contact 1 include static contact conductive sheet 10
And the stationary contact 11 on static contact conductive sheet 10 is arranged on, electric arc partition panel 50 includes partition panel mainboard 500 and is arranged on
The coupled slide-bar 54 of 500 left end of partition panel mainboard, supporter 51 include the supporter sliding rail for being arranged on 11 both sides of stationary contact
510,500 left end of partition panel mainboard is taken to put and be slidably matched in 510 upside of supporter sliding rail with it, and right end is arranged on 52 left side of baffle
Cooperation is limited with it, the right end of slide-bar 54 passes through baffle 52 to coordinate with the driving of conductive plate right end, and partition panel resetting spring 53 is set with
On slide-bar 54, left end is connected with baffle 52, and right end is connected with the right end of slide-bar 54, and right end and the conductive plate right end of slide-bar 54 drive
Dynamic cooperation.
Preferably, as shown in Figures 3 and 4, the conductive plate right end setting of the moving contact conductive plate 20 is driven with 54 right end of slide-bar
The conductive plate end face 200 of dynamic cooperation, conductive plate end face 200 are arcwall face.
Preferably, direction as shown in figure 15, the electric arc partition panel 50 include partition panel mainboard 500, are arranged on partition panel
The coupled slide-bar 54 of 500 right end of mainboard, 500 right end of partition panel mainboard coordinate with the limiting of baffle 52, slide-bar 54 and baffle 54
It is slidably matched, the setting of 54 right end of slide-bar is secured to connected spring anchor block, and partition panel resetting spring 53 is arranged on baffle 52
Between spring anchor block.
Preferably, the right end of the slide-bar 54 is hemispherical dome structure, and 54 right end of slide-bar is slided with conductive plate end face 200 matches
It closes, i.e., hemispherical dome structure is opposite with arcwall face slides, and the cooperation for making the two is more smooth.
As shown in figure 3, the electric arc separating mechanism of the utility model is in closed state：The movable contact 21 of the moving contact 2
In the close position, movable contact 21 is closed with stationary contact 11, and 500 left end of partition panel mainboard of electric arc partition panel 50 is located at static contact
11 right side, partition panel resetting spring 53 are in diastole state.As shown in Figures 4 and 5, at the electric arc separating mechanism of the utility model
In off-state：The movable contact 21 of the moving contact 2 is in disjunction position, and movable contact 21 is disconnected with stationary contact 11, electric arc partition
The partition panel mainboard 500 of plate 50 is located at the completely obscured stationary contact 11 in surface of stationary contact 11, and partition panel resetting spring 53 is in
Compressive state.
In the contact system during short circuit current flow, the electric arc separating mechanism of the utility model is turned rapidly by closed state
Off-state is shifted to, the moving contact conductive plate 20 of moving contact 2 is under the action of electrodynamic repulsion force, with shaft 6 for the rapid up time of axis
Needle rotates, and conductive plate left end drives movable contact 21 and stationary contact 11 to disconnect rapidly, meanwhile, conductive plate right end by slide-bar 54 from
11 top of stationary contact is moved quickly to by end driving partition panel mainboard 500, partition panel resetting spring 53 is compressed, by movable contact 21
Electric arc between stationary contact 11 timely and effectively separates；After short circuit current disappears, moving contact 2 is made to rotate counterclockwise, make to touch
Point 21 and stationary contact 11 are closed, and the conductive plate right end of moving contact conductive plate 20 rotates counterclockwise, 53 diastole of partition panel resetting spring
Partition panel mainboard 500 is driven to reset.
It should be pointed out that the electric arc separating mechanism of the utility model, can also use the partition with electric arc partition panel 50
The track substitution supporter that plate 500 coordinates, track is a part for shell structure, can equally realize the flat of electric arc partition panel 50
It moves and ensures that there are gaps between electric arc partition panel 50 and the stationary contact 11 of static contact 1.
The electric arc separating mechanism of the utility model has the advantages that：
(1) moving contact 2 and 50 synchronization action of electric arc partition panel, make the partition panel mainboard 500 of electric arc partition panel 50 exist
The top of stationary contact 11 of static contact 1 is moved in the extremely short time, stationary contact 11 is completely obscured, separate by moving contact 2 and quiet
The electric arc that the separation of contact 1 generates is conducive to improve the arc extinguishing efficiency and arc extinction performance of the utility model electric arc separating mechanism, even if
In critical current, still work well.
(2) the supporter sliding rail 510 of the electric arc partition panel 50 and supporter 51 is slidably matched, and avoids electric arc partition panel 50
It is directly contacted with the stationary contact of static contact 1 11, prevents the high-temperature damage electric arc partition panel 50 of stationary contact 11, lead to electric arc partition panel
50 deformations, influence 50 follow-up work of electric arc partition panel, moreover it is possible to play the role of supporting partition panel, prevent from touching because it is affected by gravity
To the right side of stationary contact 11 so that can not cover right over it, be conducive to extend making for the utility model electric arc separating mechanism
Use the service life.
Direction as shown in Figure 9, the supporter 51 include supporter stabilizer blade 511 and are separately positioned on 511 upper end of stabilizer blade
Front and rear sides two supporter sliding rails 510, formed between two supporter sliding rails 510 and accommodate the stationary contact of stationary contact 11 and hold
Receive window 513, the front and rear sides of supporter stabilizer blade 511 set static contact conductive sheet clamping plate respectively, and holding is in static contact conductive sheet two
Side is conducive to the installation of supporter 51.
Preferably, direction as shown in Figure 9, the 510 upside setting sliding rail boss 512 of supporter sliding rail of the supporter 51,
Be conducive to reduce the force of sliding friction between electric arc partition panel 50 and supporter 51, the translation for making electric arc partition panel 50 is more suitable
Freely.Further, the sliding rail boss 512 is hemispherical boss, is further reduced between supporter 51 and electric arc partition panel 50
Contact area, reduce force of sliding friction therebetween.
As shown in figure 11, the moving contact 2 includes moving contact conductive plate 20 and is arranged on 20 right end of moving contact conductive plate
Movable contact 21, moving contact conductive plate 20 includes the first plate 201, the second plate 202, the third plate 203 that are from left to right sequentially connected
And the 4th plate 204, the first plate 201 are connected with 202 obtuse angle of the second plate, the second plate 202 is connected with 203 obtuse angle of third plate, third
Plate 203 is connected with 204 obtuse angle of the 4th plate, and the first plate 201 is axial parallel with third plate 203, makes moving contact conductive plate 20 generally
Spoon shape structure.
As shown in Figure 10, the static contact 1 includes static contact conductive sheet 10 and is arranged on static contact conductive sheet 10
Stationary contact 11, static contact conductive sheet 10 are U-shaped structure, the upper end setting stationary contact 11 of U-shaped structure, lower end and static contact
Terminal plate bending is connected, and static contact conductive sheet 10 includes first arm of conductive sheet on top and is arranged on lower part and conductive sheet first
The second arm of conductive sheet that arm bending is connected.
As shown in Fig. 1-4,6 and 12, when the moving contact 2 and static contact 1 are closed, when short circuit current flow in contact system
When, due to the current direction in the first arm of conductive sheet with the current direction in the moving contact conductive plate 20 of moving contact 2 on the contrary, making
Contact conductive plate 20 is opened by electrodynamic repulsion force by quick reprimand.
As shown in Figs 1-4, the breaker of plastic casing of the utility model, including any one above-mentioned electric arc separating mechanism.Make
The breaker of plastic casing of the utility model makes breaker of plastic casing under the premise of own vol and excessive increase parts is not increased
Breaking capacity is increased dramatically, and is conducive to extend the service life of breaker of plastic casing.
The another of the breaker of plastic casing of the utility model improves embodiment, and the contact supports 70 lower ends to be cut with scissors with connecting rod 4
It connects, and passes through connecting rod 4 and electric arc partition panel 50 is driven to translate.
Another improved structure of the breaker of plastic casing of the utility model is that the contact supports 70 lower ends to be equipped with protrusion
Driving portion, the free end driving of driving portion and the slide-bar 54 of electric arc partition panel 50 coordinate, and driving electric arc partition panel 50 translates.
It should be pointed out that although above two improved structure can also play the effect of isolation electric arc, only take off
After buckle mechanism driving operating mechanism is threaded off, contact is made to support that 70 rotate counterclockwise, electric arc partition panel 50 can be driven to move
To the surface of stationary contact, so as to separate electric arc, it is clear that in moving contact 2 because when electrodynamic repulsion force is denounceed out, electric arc partition panel 50
It cannot act immediately, therefore the action of the electric arc partition panel 50 of above two improved structure is significantly delayed by, and reduces this practicality
Novel plastic shell circuit breaker extinguishes the efficiency and performance of electric arc.
As shown in Figs. 13 and 14, it is a kind of embodiment of multi-pole molded case circuit breaker, is tied in each pole of breaker of plastic casing
Above-mentioned electric arc separating mechanism is respectively provided in structure, contact at different levels supports that 70 are linked together, and shaft 6 is supported across contacts at different levels
70, make the synchronization action of the contact system of multiple electric arc separating mechanisms, the electric arc for realizing multi-pole molded case circuit breaker synchronizes partition,
Be conducive to improve the breaking capacity of multi-pole molded case circuit breaker.
The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (10)
1. a kind of electric arc separating mechanism, including contact system, contact system include moving contact (2) equipped with movable contact (21) and
Static contact (1) equipped with stationary contact (11)；
It is characterized in that：Further include electric arc partition panel (50), moving contact (2) and electric arc partition panel (50) drive cooperation and synchronous dynamic
Make；When the movable contact (21) is in the close position, movable contact (21) is closed with stationary contact (11), and electric arc partition panel (50) is located at
Stationary contact (11) side, when movable contact (21) is in disjunction position, movable contact (21) is disconnected with stationary contact (11), electric arc partition panel
(50) positioned at the completely obscured stationary contact in surface (11) of stationary contact (11), during contact system short circuit current flow, moving contact (2)
Movable contact (21) is driven to be moved to disjunction position, while electric arc partition panel (50) is by stationary contact by closed position by electrodynamic repulsion force
(11) side is moved to right over stationary contact (11), and the electric arc generated is detached to separate movable contact (21) with stationary contact (11).
2. electric arc separating mechanism according to claim 1, it is characterised in that：The moving contact (2) further includes moving contact and leads
Battery plate (20), moving contact conductive plate (20) include conductive plate left end and conductive plate right end, and conductive plate left end is equipped with movable contact (21),
Conductive plate right end coordinates with electric arc partition panel (50) driving；Connecting rod (4) is further included, connecting rod (4) one end is hinged with conductive plate right end,
The other end is hinged with electric arc partition panel (50), moving contact conductive plate (20) rotation, while conductive plate right end is driven by connecting rod (4)
Electric arc partition panel (50) moves horizontally.
3. electric arc separating mechanism according to claim 2, it is characterised in that：The electric arc partition panel (50) including for every
It powers off the partition panel mainboard (500) of arc and is arranged on the partition panel connector (501) of partition panel mainboard (500) one end, partition
Plate connector (501) is hinged with connecting rod (4).
4. electric arc separating mechanism according to claim 1, it is characterised in that：The moving contact (2) further includes moving contact and leads
Battery plate (20), moving contact conductive plate (20) include conductive plate left end and conductive plate right end, and conductive plate left end is equipped with movable contact (21),
Conductive plate right end coordinates with electric arc partition panel (50) driving；Further include the baffle (52) of fixed setting, electric arc partition panel (50) packet
It includes and is arranged on the coupled slide-bar of one end (54), slide-bar (54) is slidably matched across baffle (52) with it, on slide-bar (54)
Partition panel resetting spring (53) is arranged, partition panel resetting spring (53) one end is connected with baffle (52), the other end and slide-bar (54)
Free end be connected.
5. according to any electric arc separating mechanisms of claim 1-4, it is characterised in that：It further includes and electric arc partition panel (50)
The supporter (51) being slidably matched, supporter (51) are matched including being arranged on stationary contact (11) both sides with electric arc partition panel (50) slip
The supporter sliding rail (510) of conjunction.
6. electric arc separating mechanism according to claim 5, it is characterised in that：On the supporter sliding rail (510) setting with
The sliding rail boss (512) that electric arc partition panel (50) is slidably matched, sliding rail boss (512) are hemispherical boss.
7. electric arc separating mechanism according to claim 1, it is characterised in that：The moving contact conductive plate of the moving contact (2)
(20) the second plate (202) being connected including the first plate (201), with the first plate (201), the third plate being connected with the second plate (202)
(203) and with third plate (203) the 4th plate (204) being connected, movable contact (21) are arranged on the first plate (201), the first plate
(201) it is axial parallel with third plate (203).
8. electric arc separating mechanism according to claim 1, it is characterised in that：The static contact (1) includes static contact conduction
Piece (10) and the stationary contact (11) being arranged on static contact conductive sheet (10), static contact conductive sheet (10) are U-shaped structure,
One end setting stationary contact (11) of U-shaped structure, the other end are connected with static contact terminal plate.
9. electric arc separating mechanism according to claim 1, it is characterised in that：It further includes contact and supports (70), moving contact (2)
Moving contact conductive plate (20) be rotatably arranged in moving contact pilot hole by fixed spring and shaft (6), moving contact (2) includes
Moving contact conductive plate (20), moving contact conductive plate (20) include conductive plate left end and conductive plate right end, and conductive plate left end is equipped with dynamic
Contact (21), conductive plate right end are connected by connecting rod (4) with electric arc partition panel (50) driving；
During the contact system short circuit current flow, the moving contact conductive plate (20) of moving contact (2) under the action of electrodynamic repulsion force,
It is rotated rapidly for axis with shaft (6), fixed spring is overcome to support the elastic force opposing contact of moving contact (2) (70) rotation, it is conductive
Plate left end drive movable contact (21) with stationary contact (11) rapidly disconnect, while conductive plate right end by connecting rod (4) drive electric arc every
The partition panel mainboard (500) of disconnected plate (50) is moved quickly to masking stationary contact (11) above stationary contact (11).
10. a kind of breaker of plastic casing, it is characterised in that：It includes any electric arc separating mechanisms of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721503058.3U CN207529897U (en) | 2017-11-10 | 2017-11-10 | Electric arc separating mechanism and breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721503058.3U CN207529897U (en) | 2017-11-10 | 2017-11-10 | Electric arc separating mechanism and breaker of plastic casing |
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| Publication Number | Publication Date |
|---|---|
| CN207529897U true CN207529897U (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721503058.3U Active CN207529897U (en) | 2017-11-10 | 2017-11-10 | Electric arc separating mechanism and breaker of plastic casing |
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| Country | Link |
|---|---|
| CN (1) | CN207529897U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
| CN109119307A (en) * | 2018-09-30 | 2019-01-01 | 无锡新宏泰电器科技股份有限公司 | A kind of arc quenching system and the breaker with it |
| CN110571111A (en) * | 2019-09-02 | 2019-12-13 | 浙江正泰电器股份有限公司 | small-sized circuit breaker |
-
2017
- 2017-11-10 CN CN201721503058.3U patent/CN207529897U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
| CN109119307A (en) * | 2018-09-30 | 2019-01-01 | 无锡新宏泰电器科技股份有限公司 | A kind of arc quenching system and the breaker with it |
| CN109119307B (en) * | 2018-09-30 | 2023-08-29 | 无锡新宏泰电器科技股份有限公司 | Arc extinguishing system and circuit breaker with same |
| CN110571111A (en) * | 2019-09-02 | 2019-12-13 | 浙江正泰电器股份有限公司 | small-sized circuit breaker |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200515 Address after: 201703 floor 3, building 3, No. 6558, Yinggang East Road, Zhaoxiang Town, Qingpu District, Shanghai Patentee after: Zhenlan electric (Shanghai) Co., Ltd Address before: 201605 No. 188 Tiantai Road, Xin Bang Industrial Zone, Songjiang District, Shanghai Patentee before: Bai Zhenwen |
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| TR01 | Transfer of patent right |