CN209641546U - Quickly extinguish the arc extinction part of electric arc - Google Patents
Quickly extinguish the arc extinction part of electric arc Download PDFInfo
- Publication number
- CN209641546U CN209641546U CN201822213435.0U CN201822213435U CN209641546U CN 209641546 U CN209641546 U CN 209641546U CN 201822213435 U CN201822213435 U CN 201822213435U CN 209641546 U CN209641546 U CN 209641546U
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- Prior art keywords
- bridging board
- arc
- electric arc
- extinction part
- side plate
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Abstract
The utility model discloses a kind of arc extinction parts for quickly extinguishing electric arc, including bridging board and the side plate for being symmetricly set on bridging board two sides, the bridging board and the side plate of two sides are integrally formed and U-shaped setting, corresponds on the bridging board and is provided with several protrusions on U-shaped inner concave.The utility model provide it is a kind of more preferable than prior art heat dissipation performance, faster extinguish electric arc quick extinguishing electric arc arc extinction part.
Description
Technical field
The utility model belongs to arc extinction part technical field, especially a kind of arc extinction part for quickly extinguishing electric arc.
Background technique
In A.C. contactor, in order to extinguish electric arc rapidly, main contact is protected, product service life is improved, usually all can
Arc extinction part is provided in A.C. contactor, the shape of arc extinction part is generally the U-shaped arc extinction part of direct bending and molding, including bridge joint
Plate and the side plate that bridging board two sides are arranged in, the dynamic/static contact on A.C. contactor are located at the one end of both side plate far from bridging board
Between end, magnetic field can be generated around the arc current that dynamic/static contact is formed in A.C. contactor, arc current is in magnetic field line
Can be mobile to arc extinction part under effect, so as to extinguish electric arc, elimination electric arc is played, protects the purpose of contact and shell.It is existing
Arc extinction part in bridging board have the shortcomings that heat dissipation effect is poor, it is slow so as to cause arc extinction, seriously also result in burning
Bad side plate, shell damage product, reduce product service life.
Utility model content
It is a kind of more preferable than prior art heat dissipation performance that in order to overcome the deficiencies of the prior art, the utility model provides, more
The arc extinction part of the fast quick extinguishing electric arc for extinguishing electric arc.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of arc extinction part quickly extinguishing electric arc,
Including bridging board and the side plate for being symmetricly set on bridging board two sides, the side plates of the bridging board and two sides is integrally formed and U-shaped
It is arranged, is corresponded on the bridging board and be provided with several protrusions on U-shaped inner concave.
Using the above scheme, the arc current of generation can form magnetic field around, according to the right-hand rule, the direction of magnetic field line
For counterclockwise, since the magnetic conductivity of arc extinction part is much larger than air, magnetic field line is concentrated mainly on arc extinction part and passes through
Air forming circuit between the side plate of two sides.Arc current is acted on by upward magnetic field line, can be sentenced according to left hand rule
For disconnected arc current out by the active force to arc extinction part bridging board direction, arc current leaves contact under the action of the active force
Onto bridging board, protrusion, energy are set on bridging board in order to extinguish the arc current on bridging board more quickly
Enough increase the area of bridging board, so that the better heat-radiation effect of bridging board, plays the role of being quickly cooled down electric arc, so as to put out
Go out electric arc, protects electric elements.
As the further setting of the utility model, several airflow holes are provided on the bridging board.
Using the above scheme, to be capable of forming the gas from contact to bridging board in arc extinction part by the way that airflow hole is arranged
Stream, the speed of bridging board is moved to accelerate electric arc from contact, has further speeded up the speed for extinguishing electric arc, is improved product and is used
Service life.
As the further setting of the utility model, the protrusion setting in a strip shape, the airflow hole be set to protrusion with
Junction between bridging board, length direction in a strip shape setting of the airflow hole along protrusion.
Using the above scheme, the heat dissipation area that also can be improved bridging board while increasing air-flow, can also guarantee bridge
The structural strength of fishplate bar.
As the further setting of the utility model, the protrusion is in be uniformly arranged on bridging board up and down, several described
Protrusion extends towards two side direction of bridging board, the cross sectional shape semicircular in shape on the ledge width direction.
Using the above scheme, advanced optimizing as the utility model, moving direction of the arc current in bridging board
For longitudinal movement, the heat dissipation area of bridging board on the whole is not only increased by the protrusion being uniformly arranged up and down, moreover it is possible to extend
Moving distance of the arc current in bridging board, further improves arc quenching effect.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Attached drawing 1 is the appearance diagram 1 of the utility model specific embodiment arc quenching plate；
Attached drawing 2 is the appearance diagram 2 of the utility model specific embodiment arc quenching plate；
Attached drawing 3 is the appearance diagram 1 that the utility model specific embodiment is further arranged；
Attached drawing 4 is the appearance diagram 2 that the utility model specific embodiment is further arranged；
Attached drawing 5 is the arc current stress diagram of the utility model specific embodiment；
Attached drawing 6 is the mobile schematic diagram of arc current of the utility model specific embodiment；
The enlarged drawing in the portion A in 7 Fig. 1 of attached drawing；
The enlarged drawing in the portion B in 8 Fig. 3 of attached drawing.
Specific embodiment
This specific embodiment of the utility model as shown in figures 1-8, a kind of arc extinction part of quick extinguishing electric arc, including bridge joint
Plate 1 and the side plate 2 for being symmetricly set on 1 two sides of bridging board are lower than the upper edge of both side plate, the lower edge of bridging board on bridging board 1 along x
Lower edge of the y higher than both side plate, side plate 2 integrated molding and U-shaped setting of the bridging board 1 with two sides, shown in Fig. 5, generation
Arc current can form magnetic field around, and according to the right-hand rule, the direction of magnetic field line a is counterclockwise, due to arc extinction part
Magnetic conductivity is much larger than air, therefore magnetic field line a is concentrated mainly on arc extinction part and is formed by the air between the side plate of two sides 2
Circuit.Effect of the arc current between both side plate by upward magnetic field line a1, can judge electric arc according to left hand rule
Electric current is left contact to bridge under the action of active force b by the active force b to 1 direction of arc extinction part bridging board, arc current
On fishplate bar 1, is corresponded on the bridging board 1 and be provided with several raised 11 on U-shaped inner concave, raised 11 setting in a strip shape.
Several airflow holes 12 are provided on the bridging board 1.The airflow hole 12 is set to junction between protrusion 11 and bridging board 1,
Length direction in a strip shape setting of the airflow hole 12 along protrusion 11.Described raised 11 be in be uniformly arranged on bridging board 1 up and down,
Several described raised 11 extend towards 1 liang of side direction of bridging board, the cross sectional shape semicircular in shape in raised 11 width direction.
Further it is arranged in the present embodiment, is symmetrically arranged with magnetic conductive part 21, two magnetic conductive parts 21 on the two sides side plate 2
In being oppositely arranged, since the magnetic conductivity of magnetic conductive part 21 is higher than air, the magnetic wire between two magnetic conductive parts 21 more collects
In, the magnetic blow-out power for acting on arc current is bigger, and arc current is enabled to faster to be detached from contact and move to bridging board 1
It is dynamic.
In the present embodiment, including moving contact 3 and static contact 4, the moving contact 3 and static contact 4 are arranged at both side plate 2
Between, the line of centres between described two magnetic conductive parts 21 is between moving contact 3 and static contact 4.Described two magnetic conductive parts 21
Between the line of centres and moving contact 3 and static contact 4 between center line be vertical setting and in the same plane.Described two
The lateral edge of a side plate 2 is symmetrical arranged fluted 22, and bending part 221, the magnetic conductive part are provided in described two grooves 22
21 are bent inwards by two bending parts 221 respectively forms.The bending part 221 is integrally formed with the side plate 2 to be arranged.
Further setting, including moving conductive plate 31, quiet conductive plate 41 in the present embodiment, the static contact 4 are arranged quiet
41 one end of conductive plate, quiet 41 one end of conductive plate are arranged below bridging board 1 and between both side plate 2, and quiet conductive plate 41 is another
End extends towards 1 rear of bridging board, and described quiet 41 one end of conductive plate is provided with an arc striking piece 5, and one end 51 of the arc striking piece 5 is bonded
It is arranged on quiet conductive plate 41, the other end 52 is extended at the lower edge of bridging board 1, the arc striking piece 5 and bridging board 1
The distance between lower edge is less than the distance between quiet conductive plate 41 and both side plate 2, by arc striking piece 5 by the electric arc of quiet conductive plate 41
Electric current is directed on the bridging board 1 of arc extinction part and forms longer electric arc c with the arc current on moving conductive plate 31.The striking
The width of one end 51 of piece 5 is greater than the width of 5 other end 52 of arc striking piece and the width of 5 other end 52 of arc striking piece is gradually small.It is described to draw
One end 51 of arcs 5 is arranged close to static contact 4 and the distance between one end 51 of arc striking piece 5 and static contact 4 are less than quiet conductive plate
The distance between 41 and both side plate 2.
In the present embodiment, the arc striking piece 5 is ferromagnetic material.
The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs
The content opened can be implemented the utility model or all using the utility model using other a variety of specific embodiments
Design structure and thinking, do simple change or change, both fall within the protection scope of the utility model.
Claims (4)
1. a kind of arc extinction part for quickly extinguishing electric arc, including bridging board and the side plate for being symmetricly set on bridging board two sides, the bridge
Fishplate bar and the integrated molding of the side plate of two sides and U-shaped setting, it is characterised in that: corresponded on the bridging board on U-shaped inner concave
It is provided with several protrusions.
2. the arc extinction part of quick extinguishing electric arc according to claim 1, it is characterised in that: if being provided on the bridging board
Dry gas discharge orifice.
3. the arc extinction part of quick extinguishing electric arc according to claim 2, it is characterised in that: the protrusion setting in a strip shape,
The airflow hole is set to junction between protrusion and bridging board, length direction in a strip shape setting of the airflow hole along protrusion.
4. the arc extinction part of quick extinguishing electric arc according to claim 1 or 3, it is characterised in that: the protrusion is in equal up and down
Cloth is arranged on bridging board, and several protrusions extend towards two side direction of bridging board, the section on the ledge width direction
Shape semicircular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213435.0U CN209641546U (en) | 2018-12-27 | 2018-12-27 | Quickly extinguish the arc extinction part of electric arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213435.0U CN209641546U (en) | 2018-12-27 | 2018-12-27 | Quickly extinguish the arc extinction part of electric arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209641546U true CN209641546U (en) | 2019-11-15 |
Family
ID=68476035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822213435.0U Active CN209641546U (en) | 2018-12-27 | 2018-12-27 | Quickly extinguish the arc extinction part of electric arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209641546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023217210A1 (en) * | 2022-05-11 | 2023-11-16 | 上海良信电器股份有限公司 | Operation mechanism capable of being operated at multiple sides, isolation switch and switch appliance |
-
2018
- 2018-12-27 CN CN201822213435.0U patent/CN209641546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023217210A1 (en) * | 2022-05-11 | 2023-11-16 | 上海良信电器股份有限公司 | Operation mechanism capable of being operated at multiple sides, isolation switch and switch appliance |
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