CN207199555U - A kind of breaker - Google Patents
A kind of breaker Download PDFInfo
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- CN207199555U CN207199555U CN201721253802.9U CN201721253802U CN207199555U CN 207199555 U CN207199555 U CN 207199555U CN 201721253802 U CN201721253802 U CN 201721253802U CN 207199555 U CN207199555 U CN 207199555U
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Abstract
A kind of breaker, including contact apparatus and arc-control device, the contact apparatus includes static contact and the moving contact acted between open and closed positions, static contact is provided with stationary contact, moving contact is provided with the movable contact for separating and contacting with stationary contact, arc-control device is located above stationary contact and is made up of several pieces spaced grid stackings, moving contact has one to be used to separate movable contact with stationary contact caused arc transfer to the arc leading angle of the grid at top, opened by the moving contact relative to the static contact to position during extreme degree, electric clearance between the grid being located at more than movable contact height and position and moving contact of arc-control device increases from top to bottom in arc-control device short transverse.Improve the electric-field intensity distribution inside arc-control device and electric-field intensity distribution region is concentrated uniformly or to arc-control device upper end, ensure that electric arc shifts to the direction of the arc extinguishing grid pieces of upper end, avoid the arc extinguishing grid pieces of upper end from failing, improve stability of the electric arc inside arc-control device.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of breaker.
Background technology
Effect of the low-voltage circuit breaker played in distribution line is disjunction and connect circuit, more particularly, passes through contact
The closure of a pair of separable contacts pair of system or separation realize that being switched on or switched off for electric line carrys out protection circuit and electricity consumption is set
It is standby.When there is abnormal failure in circuit, for example, it is short-circuit when, the rapidly disjunction circuit by the separation of contact pair, to avoid equipment
Damage.The known reason such as industry, contact, which separates, in the case of current-carrying can produce electric arc, especially when disconnecting Short-Circuit High Current,
The energy of electric arc is big, and the ablation to contact is serious, therefore in the various device for switching such as breaker, contactor, generally all sets
Arc-control device extinguishes electric arc, to ensure that electric equipment is safe for operation.
Fig. 7 is the schematic diagram of the contact apparatus of the breaker in prior art, and Fig. 8 is Fig. 7 top view, contact apparatus bag
Static contact 4 and moving contact 5 are included, static contact 4 is made up of quiet guide rod 43, stationary contact 41 and run-on tab 42；Moving contact 5 is by movable contact 51
Formed with dynamic guide rod 52, movable contact 51 is corresponding with stationary contact 41.The 5 rotatable earth's axis of moving contact is connected on the dynamic of circuit breaker internal and touched
On head support.Arc-control device generally comprises multi-disc by the arc extinguishing grid pieces 1 of appropriate intervals distance installation and is disposed on arc extinguishing
The striking grid 2 of the top of grid 1, for separating and extinguishing electric arc.Arc extinguishing grid pieces 1 generally take the shape of the letter U structure, including two grid legs,
The cutting area of two grid legs is connected, arc extinguishing grid pieces 1 typically slightly tilt installation, i.e. the height of cutting area is higher than the height of grid leg
Degree.To improve the magnetic field intensity near contact apparatus, the grid legs of arc extinguishing grid pieces 1 surrounds the motion track of movable contact 41, and
It is provided between grid leg and dynamic guide rod 52 and is dielectrically separated from part 3.
In such circuit-breaker, during normal work, moving contact 5 in the presence of touch spring with described stationary contact
First 4 contact, i.e., dynamic and static contact 51,41 close, and realize the conducting of circuit.When there is short circuit current in loop, dynamic and static contact 5,4
Between electrodynamic repulsion force be more than contact power, moving contact 5 can then denounce to hold to be separated with static contact 4, is touched in stationary contact 41 with dynamic
Electric arc is produced between point 51, caused electric arc enters interrupter cartridge under the collective effect of magnetic blow-out and air-blowing power along run-on tab 42
Inside is put, is cut into the short arc of multiple series connection by the cutting area of arc extinguishing grid pieces 1 in arc-control device internal arc, so as to improve electric arc
Voltage, make arc extinction.Grid leg can be increased to the electric clearance of moving contact 5 by being dielectrically separated from part 3, avoid arc voltage liter
Punch-through occurs between grid leg and moving contact 5 after height.
Go out after the arc cutting of grid piece 1, electric arc arc root is formed on arc extinguishing grid pieces 1, electric arc is divided into multiple series connection
Short arc, each short arc have a proximal pole pressure drop U0, so also producing U between adjacent arc extinguishing grid pieces 1 after subdividing the arc0Electrical potential difference.
During short circuit breaking, with the opening each other of dynamic and static contact 5,4, participating in the arc extinguishing grid pieces 1 of arc cutting increases, interrupter cartridge
Put the potential from bottom to top on arc extinguishing grid pieces to gradually rise, the potential highest on moving contact 5.When moving contact 5 reaches the limit of opening
During position, i.e., moving contact 5 is opened to position during extreme degree relative to the static contact 4, moving contact 5, arc-control device from
Top arc extinguishing grid pieces and under all arc extinguishing grid pieces 1, static contact 4 run-on tab 42 between pass through electric arc formed path, moving contact 5
Electrical potential difference between the top striking grid 2 is minimum, then the potential between top-down arc extinguishing grid pieces 1 and moving contact 5
Poor gradually increase.
Under prior art, when moving contact 5 reaches the limit of open position, the arc extinguishing grid pieces 1 near moving contact 5 arrive moving contact
5 electric clearance d appears in grid leg between moving contact 5 so that, in arc-control device short transverse, closer to movable contact
The electric clearance of 51 arc extinguishing grid pieces 1 to moving contact 5 is smaller.After being cut due to electric arc by all arc extinguishing grid pieces 1, close to movable contact
51 arc extinguishing grid pieces 1 and the electrical potential difference of moving contact 5 are more than arc extinguishing grid pieces above the arc extinguishing grid pieces 1 close to movable contact 51 with moving
The electrical potential difference of contact 5, electric-field intensity can be caused to be concentrated close to the position of arc extinguishing grid pieces 1 of movable contact 51.Under the structure, on the one hand
The difficulty that electric arc shifts to upper end arc extinguishing grid pieces 1 can be increased, electric arc can not be transferred to upper end arc extinguishing grid pieces 1, the top of movable contact 51
Arc extinguishing grid pieces 1 electric arc can not be realized and cut, reduce the validity of arc extinguishing grid pieces 1；On the other hand, also easily send out in this place
Raw back commutation, is unfavorable for holding of the electric arc in arc-control device.
The content of the invention
Task of the present utility model is to provide a kind of breaker, by the arc-chute in different height in arc-control device
Electric clearance between piece and moving contact adjusts and used the electric-field intensity distribution improved inside arc-control device and makes electric-field intensity
Uniformly or to arc-control device upper end concentrate distributed areas, it is ensured that electric arc shifts to the arc extinguishing grid pieces of upper end, avoids the arc extinguishing of upper end
Grid fails, and reduction makes the risk of back commutation occurs at this and improves electric arc because of electric-field intensity concentration near moving contact
Stability inside arc-control device.
What task of the present utility model was performed by, a kind of breaker, including contact apparatus and arc-control device, it is described
Contact apparatus includes static contact and the moving contact acted between open and closed positions, and static contact is provided with stationary contact, moving contact
The movable contact for separating and contacting with stationary contact is provided with, arc-control device is located above stationary contact and by several pieces spaced grid
Stacking is formed, and moving contact has one to be used to stationary contact separating movable contact caused arc transfer to the grid at top to draw
Arc angle, opened by the moving contact relative to the static contact to position during extreme degree, arc-control device is located at
The electric clearance between grid and moving contact more than movable contact height and position increases from top to bottom in arc-control device short transverse.
In a specific embodiment of the present utility model, described moving contact has a dynamic guide rod, and described is dynamic tactile
Point is arranged on dynamic guide rod towards one end end of the stationary contact and, dynamic guide rod one towards stationary contact corresponding with stationary contact
Hold end and upwardly extended away from the side of movable contact and be configured to described arc leading angle.
In another specific embodiment of the present utility model, described grid includes several arc extinguishing grid pieces and positioned at going out
The one striking grid on the top of arc grid, striking grid include striking grid body and arc striking piece, and striking grid body, which is located at, to go out
The top of arc grid, arc striking piece are made up of striking grid body towards one end end of the moving contact with the extension of bending state,
The arc striking piece extend to the top of the arc leading angle when moving contact is opened to extreme position relative to the static contact and
Spacing is maintained between arc leading angle.
In another specific embodiment of the present utility model, the rectangular tabular of described arc extinguishing grid pieces, arc-chute
Piece offers striking groove in face of the side of moving contact.
In another specific embodiment of the present utility model, described arc extinguishing grid pieces are by electric arc cutting sheet and a pair
The "U" shaped structure that grid leg is formed, a pair of grid legs extend in electric arc cutting sheet towards the both sides of one end of the moving contact
Form and mutually corresponding, the space between a pair of grid legs is configured to moving contact movable chamber, and described moving contact is towards arc extinguishing
One end of grid is probeed into moving contact movable chamber, on the bottom of chamber wall of moving contact movable chamber and positioned at the length direction of bottom of chamber wall
Middle position offer a striking groove；Described arc-control device, which also includes a pair, is dielectrically separated from part, and this is to being dielectrically separated from
Part is arranged between the moving contact and described grid leg.
In an also specific embodiment of the present utility model, a pair of described grid legs are respectively by the first leg section and width
Degree is formed more than the second leg section of the first leg section, wherein：Second leg section between the electric arc cutting sheet and the first leg section simultaneously
And the second leg section extends to described striking groove.
Of the present utility model more and in a specific embodiment, a pair of described grid legs are by a pair of described insulation
Isolated part covers.
In an of the present utility model and then specific embodiment, the first described leg section by described a pair of insulation every
From member covers.
Of the present utility model and more and in a specific embodiment, the arc striking piece is by striking grid body towards institute
State one end end of moving contact and formed with the state bending and extending of being inclined upwardly.
It is of the present utility model and and then a specific embodiment in, width that described electric clearance increases from top to bottom
Spend for 50% more than or equal to the spacing distance between upper and lower two adjacent grid.
Technical scheme provided by the utility model has technical effect that：Due to by the position of several pieces grid in arc-control device
It is adjusted to as follows：Opened by moving contact relative to static contact to position during extreme degree, positioned at movable contact height position
The electric clearance put between the grid of the above and moving contact increases from top to bottom in arc-control device short transverse, thus is improved
Electric-field intensity distribution inside arc-control device simultaneously makes electric-field intensity distribution region be concentrated uniformly or to arc-control device upper end, it is ensured that electricity
Arc shifts to the direction of the arc extinguishing grid pieces of upper end, avoids the arc extinguishing grid pieces of upper end from failing, and reduces moving contact electric-field strength nearby
Degree is concentrated and makes the risk of back commutation occurs at this and improve stability of the electric arc inside arc-control device.
Brief description of the drawings
Fig. 1 is the contact apparatus and arc-control device schematic diagram of the utility model embodiment one.
Fig. 2 is the arc chute chip architecture figure of the utility model embodiment one.
Fig. 3 is the contact apparatus and arc-control device schematic diagram of the utility model embodiment two.
Fig. 4 is the arc chute chip architecture figure of the utility model embodiment two.
Fig. 5 is the contact apparatus and arc-control device schematic diagram of the utility model embodiment three.
Fig. 6 is the arc chute chip architecture figure of the utility model embodiment four.
Fig. 7 is the schematic diagram of the contact apparatus of the breaker in prior art.
Fig. 8 is Fig. 7 top view.
Embodiment
Embodiment 1 and embodiment 2 and embodiment 3 and embodiment 4：
Fig. 1 to Fig. 5 is referred to, breaker of the present utility model includes contact apparatus and arc-control device, and contact apparatus includes
Static contact 4 and the moving contact 5 acted between open and closed positions, static contact 4 are provided with stationary contact 41, and moving contact 5 is provided with
The movable contact 51 for separating and contacting with stationary contact 41, arc-control device are located at the top of stationary contact 41 and by several pieces spaced grid
Stacking is formed, and moving contact 5 has one to be used to separate movable contact 51 with stationary contact 41 caused arc transfer to the grid at top
The arc leading angle 53 of piece.
Technical essential as technical scheme provided by the utility model：Extreme open position is located at foregoing moving contact 5
When, i.e., opened relative to foregoing static contact 4 to position during extreme degree, arc-control device is located at the height of movable contact 51
The electric clearance between grid and moving contact 5 more than position increases from top to bottom in arc-control device short transverse.
The height of moving contact 5 when the height of the grid at the top of arc-control device is in extreme open position higher than moving contact 5
Degree.Moving contact 5 has a dynamic guide rod 52, and foregoing movable contact 51 is arranged on dynamic guide rod 52 towards one end end of foregoing stationary contact 41
Portion and corresponding with stationary contact 4, it is one lateral towards one end end of stationary contact 41 and away from movable contact 51 to move guide rod 52
It is upper extension and be configured to foregoing arc leading angle 53.
Foregoing grid includes several arc extinguishing grid pieces 1 and the striking grid 2 positioned at the top of arc extinguishing grid pieces 1, striking grid
Piece 2 includes striking grid body 21 and arc striking piece 22, and striking grid body 21 is located at the top of arc extinguishing grid pieces 1, arc striking piece 22 by
Striking grid body 21 is formed towards one end end of foregoing moving contact 5 with the extension of bending state, and the arc striking piece 22 extends to
Moving contact 5 opened relative to foregoing static contact 4 to the top of the foregoing arc leading angle 53 during extreme position and with arc leading angle 53 it
Between maintain spacing.
A pair of foregoing grid legs 11 are dielectrically separated from part 3 by foregoing a pair and covered.
In the present embodiment, foregoing arc striking piece 22 by striking grid body 21 towards one end end of foregoing moving contact 5 with
The state that is inclined upwardly bending simultaneously extends composition；The amplitude that foregoing electric clearance increases from top to bottom is more than or equal to upper and lower two
50% of spacing distance between adjacent grid.
The quiet guide rod 43 of the structural system of static contact 4 is also show in Fig. 1 and is drawn to what arc-control device bottom extended
Arc plate 42（That is static contact run-on tab）.Foregoing moving contact 5 acts between the opened and the closed positions so that foregoing stationary contact
41 separate and contact with movable contact 51, realize the disconnection and connection of circuit.
Two adjacent arc extinguishing grid pieces up and down in the arc extinguishing grid pieces 1 of foregoing arc-control device are installed by rational spacing distance L
In on the wall body for inserting the arc-chutes for being embedded in arc-control device（Belong to prior art）.Foregoing striking grid 2 is essentially one piece
Metallic plate.
Arranging the position of multiple grid makes, and is opened using moving contact 5 relative to static contact 4 to position during extreme degree as base
Standard, the electric clearance between the grid being located at more than the height and position of movable contact 51 and moving contact 5 of arc-control device is in arc-control device
Short transverse increases from top to bottom.The grid more than height and position of movable contact 51 described in the utility model refers to whole movable contact
The grid that 51 horizontal level is in more than the position of highest end 511.
In embodiment 1（Such as Fig. 1,2）With embodiment 2（Such as Fig. 3,4）In these grid be：Striking grid 2 to electric arc is cut
The lowest part of piece 13 is located at the arc extinguishing grid pieces 1 of the top of end 511, and those grid include：The lowest part of electric arc cutting sheet 13 is located at
Arc extinguishing grid pieces 1 shared by connection wall 54 on moving contact 5 between arc leading angle 52 and movable contact 51 in altitude range, and striking grid
2.The amplitude that electric clearance increases from top to bottom be not less than（It is more than or equal to）Spacer between upper and lower two adjacent grid
From 50%, the even electric clearance of arc extinguishing grid pieces 1 to moving contact 5 is d, then under a piece of arc extinguishing grid pieces to moving contact electric equipment compartment
Gap should be d+0.5L.
In embodiment 3（Such as Fig. 5）Shown in grid, including：The lowest part of electric arc cutting sheet 13 is located on moving contact 5 and drawn
Arc extinguishing grid pieces 1 shared by connection wall 54 between arc angle 52 and movable contact 51 in altitude range.
When the description of above-mentioned altitude range is that moving contact 5 is located at extreme open position, i.e., moving contact 5 is relative to static contact
4 open to position during extreme degree.In current limiting type circuit breaker, when short trouble occurs for circuit, dynamic/static contact
Reprimand is opened first, and the operating mechanism of breaker also has little time action to open position, moving contact due to its internal machine driving
Separated with respect to static contact, moving contact is opened to greatest limit position, and moving contact can fall after rise, and now the operating mechanism of breaker moves
Make to open position, finally cause moving contact to stop at open position.Therefore extreme open position is more final generally than moving contact
Open position distance static contact is remote.
In embodiment 1（Such as Fig. 1,2）In, it is dielectrically separated from part 3 and covers whole grid legs 11, arc extinguishing grid pieces 1 arrives moving contact 5
Electric clearance appear in electric arc cutting sheet 13 the lateral edges in face of moving contact 5 connection striking groove 12 and grid leg 11
Between wall 121 and moving contact 5.Equally, in embodiment 4（Such as Fig. 6）In, arc extinguishing grid pieces 1 are generally rectangular shaped tabular, arc extinguishing
Grid 1 offers striking groove 12 in face of the side of moving contact 5, but it does not have grid leg, and arc extinguishing grid pieces 1 slightly tilt peace
Dress, the i.e. height away from the side of moving contact 5 of arc extinguishing grid pieces 1 are higher than arc extinguishing grid pieces 1 in face of the side of moving contact 5（Open
Side provided with striking groove 12）Therefore, only the utility model institute need to be ensured by setting the distance between grid and moving contact
It is required that electric clearance, i.e., in the short transverse of arc-control device, automatic striking arc grid 2 to going out positioned at the height and position of movable contact 51
The distance between arc grid and moving contact 5 increase from top to bottom.
Embodiment 2：
Fig. 3 and Fig. 4 are referred to, foregoing arc extinguishing grid pieces 1 are configured to U-shaped by electric arc cutting sheet 13 and a pair of grid legs 11
Shape, a pair of grid legs 11 electric arc cutting sheet 13 towards one end of foregoing moving contact 5 both sides extension form and mutually
Corresponding, the space between a pair of grid legs 11 is configured to moving contact movable chamber 111, and foregoing moving contact 5 is towards arc extinguishing grid pieces 1
One end is probeed into moving contact movable chamber 111, on the bottom of chamber wall of moving contact movable chamber 111 and positioned at the length direction of bottom of chamber wall
Middle position offer a striking groove 12；Foregoing arc-control device also includes a pair and is dielectrically separated from part 3（Fig. 1 shows）, should
It is arranged on to being dielectrically separated from part 3 between foregoing moving contact 5 and foregoing grid leg 11.
In the present embodiment, a pair of foregoing grid legs 11 are respectively more than the first leg section 112 by the first leg section 112 and width
Second leg section 113 is formed, wherein：Second leg section 113 be located between the leg section 112 of aforementioned arc cutting sheet 13 and first and this
Two leg sections 113 extend to foregoing striking groove 12.
Arc extinguishing grid pieces 1 in the present embodiment 2 in order to increase the magnetic field intensity that the grid of striking groove 12 enters nock, by grid
Enter the grid leg local widening at nock, so that a pair of grid legs 11 are respectively made up of first, second leg section 112,113.Insulation
Isolated part 3 covers the first leg section 112 but does not cover the second leg section 113.The structure of the arc extinguishing grid pieces 1 of the present embodiment, substantially
Also a part that can be using the second leg section 113 as electric arc cutting sheet 13, i.e. the second leg section 113 and striking groove 12 are electric arc cutting
The groove opened up in face of the side of moving contact 5 of piece 13.
The present embodiment ensures the electric equipment compartment required by the utility model by setting the distance between grid and moving contact
Gap, i.e., in the short transverse of arc-control device, automatic striking arc grid 2 to each arc extinguishing grid pieces positioned at the height and position of movable contact 51
The distance between second leg section 113 and moving contact 5 increase from top to bottom.
When short circuit current by when, with the increase of short circuit current, when short circuit current reaches after critical reprimand opens current value,
Electrodynamic repulsion force will be more than the contact force that touch spring provides as caused by concentration electric current, and moving contact 5 will leave static contact 4, to
Move open position.While moving contact 5 departs from static contact 4, electric arc will be produced between static contact 4, moving contact 5.
Under the collective effect of magnetic blow-out and air-blowing power, electric arc is transferred to static contact run-on tab 42 from stationary contact 41, and passes through static contact striking
Plate 42 enters arc-control device, is cut by arc extinguishing grid pieces 1, and with the opening of contact, the arc extinguishing grid pieces 1 of arc cutting gradually increase,
Arc voltage improves, and the potential in grid also improves, the potential highest on moving contact 5.When moving contact 5 reaches open position, electricity
Arc voltage reaches maximum, now if all arc extinguishing grid pieces 1 all form effective cutting to electric arc, then between grid and moving contact
Electrical potential differenceGradually increase from top to bottom.The calculation formula of electric-field intensity is, due to grid to moving contact（Bag
Include all electric conductors including guide rod 52, movable contact 51, arc leading angle 53）Electric clearanceAlso present and gradually increase from top to bottom
The trend added, it is possible to make the electric-field intensity distribution region inside arc-control device uniformly or to arc-control device upper end concentrate, protect
Transfer of the electric arc to upper end grid has been demonstrate,proved, has avoided the failure of upper end grid；It can reduce because of electric-field intensity collection near moving contact
In and back commutation, which occurs, makes the risk of movable contact upper end grid failure.
Arc-control device of the present utility model can also be not provided with striking grid 2, embodiment 3 as shown in Figure 5, arrange arc-chute
The position of piece 1 causes, corresponding to the region of the connection wall 54 between the foregoing arc leading angle 53 and foregoing movable contact 51 of moving contact 5
Electric clearance between foregoing grid and moving contact 5 gradually increases from up to down.
The technical scheme that the utility model adjusts electric clearance between grid and moving contact is not limited to above-described embodiment, Ke Yiru
The adjustment of electric clearance only is realized by arranging grid position with described in example IV, also can be such as embodiment one, two, three
Described is dielectrically separated from part to the aspect of circumstance of occlusion two of arc extinguishing grid pieces jointly come complete by arranging grid position while arranging
Into.
The utility model provides a kind of breaker by arranging grid position so that when moving contact 5 is located at open position, goes out
Electric clearance between the grid being located at more than the height and position of movable contact 51 and moving contact 5 of arc device is in arc-control device height side
To increasing from top to bottom.Effect：Optimize the distribution of arc-control device internal electric intensity, make the electric-field intensity point inside arc-control device
Cloth region uniformly or to arc-control device upper end is concentrated, and be ensure that transfer of the electric arc to upper end grid, is avoided the mistake of upper end grid
Effect；Reduce because the risk that back commutation occurs at this is concentrated and caused to electric-field intensity near moving contact, improve electric arc in arc extinguishing
Stability inside device.
Claims (10)
1. a kind of breaker, including contact apparatus and arc-control device, the contact apparatus includes static contact (4) and is playing open and close
The moving contact (5) acted between position is closed, static contact (4) is provided with stationary contact (41), and moving contact (5) is provided with and stationary contact (41)
Separation and the movable contact (51) of contact, arc-control device are located above stationary contact (41) and are laminated structure by several pieces spaced grid
Into, moving contact (5) have one be used to separating movable contact (51) with stationary contact (41) caused by arc transfer to top grid
The arc leading angle (53) of piece, it is characterised in that opened with the moving contact (5) relative to the static contact (4) to during extreme degree
On the basis of position, the electric equipment compartment between the grid being located at more than movable contact (51) height and position and moving contact (5) of arc-control device
Gap increases from top to bottom in arc-control device short transverse.
2. a kind of breaker according to claim 1, it is characterised in that described moving contact (5) has a dynamic guide rod
(52), described movable contact (51) is arranged on dynamic guide rod (52) towards one end end of the stationary contact (41) and and stationary contact
(41) corresponding, dynamic guide rod (52) upwardly extends towards one end end of stationary contact (41) and away from the side of movable contact (51)
And it is configured to described arc leading angle (53).
A kind of 3. breaker according to claim 1, it is characterised in that described grid include several arc extinguishing grid pieces (1) and
A striking grid (2) positioned at the top of arc extinguishing grid pieces (1), striking grid (2) include striking grid body (21) and arc striking piece
(22), striking grid body (21) is located at the top of arc extinguishing grid pieces (1), and arc striking piece (22) is by striking grid body (21) towards institute
One end end for stating moving contact (5) is formed with the extension of bending state, and the arc striking piece (22) is extended in moving contact (5) relative to institute
State static contact (4) open maintained to the top of the arc leading angle (53) during extreme position and between arc leading angle (53) between
Away from.
A kind of 4. breaker according to claim 3, it is characterised in that described arc extinguishing grid pieces (1) rectangular tabular,
Arc extinguishing grid pieces (1) offer striking groove (12) in face of the side of moving contact (5).
5. a kind of breaker according to claim 3, it is characterised in that described arc extinguishing grid pieces (1) are by electric arc cutting sheet
(13) and the "U" shaped structure that forms of a pair of grid legs (11), a pair of grid legs (11) are in electric arc cutting sheet (13) described in
The both sides extension of one end of moving contact (5) is formed and mutually corresponded to, and the space between a pair of grid legs (11) is configured to dynamic and touched
Head movable chamber (111), one end of described moving contact (5) towards arc extinguishing grid pieces (1) are probeed into moving contact movable chamber (111),
The middle position of length direction on the bottom of chamber wall of moving contact movable chamber (111) and positioned at bottom of chamber wall offers a striking groove
(12)；Described arc-control device also includes a pair and is dielectrically separated from part (3), this to be dielectrically separated from part (3) be arranged on it is described
Between moving contact (5) and described grid leg (11).
6. a kind of breaker according to claim 5, it is characterised in that a pair of described grid legs (11) are respectively by the first leg
The second leg section (113) that section (112) and width are more than the first leg section (112) is formed, wherein：Second leg section (113) is positioned at described
Between electric arc cutting sheet (13) and the first leg section (112) and the second leg section (113) extends to described striking groove (12).
7. a kind of breaker according to claim 5, it is characterised in that a pair of described grid legs (11) are by described one
Covered to being dielectrically separated from part (3).
8. a kind of breaker according to claim 6, it is characterised in that the first described leg section (112) is by described a pair
It is dielectrically separated from member covers.
9. a kind of breaker according to claim 3, it is characterised in that the arc striking piece (22) is by striking grid body
(21) formed towards one end end of the moving contact (5) with the state bending and extending of being inclined upwardly.
A kind of 10. breaker according to claim 1, it is characterised in that the width that described electric clearance increases from top to bottom
Spend for 50% more than or equal to the spacing distance between upper and lower two adjacent grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253802.9U CN207199555U (en) | 2017-09-27 | 2017-09-27 | A kind of breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253802.9U CN207199555U (en) | 2017-09-27 | 2017-09-27 | A kind of breaker |
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| Publication Number | Publication Date |
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| CN207199555U true CN207199555U (en) | 2018-04-06 |
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| CN201721253802.9U Active CN207199555U (en) | 2017-09-27 | 2017-09-27 | A kind of breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648938A (en) * | 2018-06-15 | 2018-10-12 | 上海电器科学研究所（集团）有限公司 | A kind of conducting loop sytem with excellent magnetic blow-out effect |
| CN109473307A (en) * | 2019-01-09 | 2019-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact of breaker arc-control device and its breaker |
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
| CN112017924A (en) * | 2019-05-30 | 2020-12-01 | 北京京人电器有限公司 | Arc extinguishing system of circuit breaker |
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2017
- 2017-09-27 CN CN201721253802.9U patent/CN207199555U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
| CN108648938A (en) * | 2018-06-15 | 2018-10-12 | 上海电器科学研究所（集团）有限公司 | A kind of conducting loop sytem with excellent magnetic blow-out effect |
| CN108648938B (en) * | 2018-06-15 | 2023-12-05 | 上海电器科学研究所（集团）有限公司 | Conductive loop system with excellent magnetic blowing effect |
| CN109473307A (en) * | 2019-01-09 | 2019-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact of breaker arc-control device and its breaker |
| CN112017924A (en) * | 2019-05-30 | 2020-12-01 | 北京京人电器有限公司 | Arc extinguishing system of circuit breaker |
| CN112017924B (en) * | 2019-05-30 | 2023-01-10 | 北京京人电器有限公司 | Arc extinguishing system of circuit breaker |
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