CN1953112B - Electrical switching device - Google Patents
Electrical switching device Download PDFInfo
- Publication number
- CN1953112B CN1953112B CN2006101360300A CN200610136030A CN1953112B CN 1953112 B CN1953112 B CN 1953112B CN 2006101360300 A CN2006101360300 A CN 2006101360300A CN 200610136030 A CN200610136030 A CN 200610136030A CN 1953112 B CN1953112 B CN 1953112B
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- CN
- China
- Prior art keywords
- conductor part
- arc plate
- contact
- distance
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Slide Switches (AREA)
- Contacts (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention relates to an electrical switching device which comprises a first conducting part (2), a second conducting part (3) and a arc plate (4), each of the conducting parts having a contact (5, 7) at its free end (6, 8), and movable in a Y-direction relative to each other for separating the contacts (5, 7) lying close to each other in a closed condition. An arc plate (4) extends in the Y-direction and has separating distances (S1, S2) corresponding to the conducting parts (2, 3), wherein the two free ends (6, 8) directing the X direction which is vertical to the Y direction and facing the arc plate (4), and the separating distances (S1, S2) extending in the X direction. The plate has an area inclined to the Y-direction, where the sum of the distances is large when the contacts are disconnected from the closed condition.
Description
Technical field
The present invention relates to a kind of electric switchgear, have one first conductor part and one second conductor part, each conductor part has a contact and can move relative to each other at a free end respectively, so as will be in a make position against each other contact separately.
Background technology
By known a kind of this type of the switching device of DE 44 45 343.It for example can be used for protecting electric device or equipment to avoid the damage that causes when short circuit.Under short-circuit conditions, contact is separated from each other.In the case, between contact, form electric arc.If when the motion by one of two conductor parts made the distance between the contact become excessive, then transferred arc became a pre-open electric arc, this opens electric arc in advance and is formed between a conductor part and the arc-extinction device.This pre-open electric arc is converted into the electric arc of a disconnection at last, and the electric arc of this disconnection jumps on the extinguishing arc fin of arc-extinction device.This arc-extinction device has a plurality of parts, so it manufactures quite expensive.
In addition by the also known a kind of electric switchgear of JP 6223669 with two conductor parts, each conductor part also has a contact and one of them conductor part can move at a free end respectively on a Y direction, so as will be in a make position against each other contact separately.Basically on the Y direction, extend at this arc plate.In the case, relative first conductor part of this arc plate has a distance of separation S2 and relative second conductor part has a distance of separation S1, wherein, two free ends of conductor part point to an identical directions X, and this direction is vertical with the direction of motion or the Y direction of movable conductor part.Two free ends and the arc plate of conductor part are face-to-face.Distance of separation S1 extends on the direction identical with two free ends of conductor part with S2.Because the shape and the structure of arc plate, between moving period, it is constant that distance of separation S1 and S2 sum keep at movable conductor part.
In switching device according to DE 44 45 343, when contact when make position is separated, at first between two contacts, form an electric arc.If the motion by movable conductor part makes the distance between these contacts become excessive, electric arc will jump on the arc plate.Because given distance of separation S1, S2 electric arc rests between two contacts for a long time, the result is that senior usually contact material is ablated or erosion by effect of arc.Though help electric arc to jump on the arc plate by reducing distance of separation S1, S2, reduced making full use of of contact material thus, this can cause again, jumps to the electric arc on the arc plate and only just extinguishes after long-time owing to treat the distance of separation weak point of cross-over connection.
Summary of the invention
Therefore task of the present invention is, a kind of electric switchgear is provided, and it simple in structure and the wearing and tearing on the contact therein can keep as far as possible little.
Task of the present invention will be solved by combination of features of the present invention.Its preferred implementing form can be by learning in the following technical scheme.
Electric switchgear of the present invention comprises one first conductor part and one second conductor part and an arc plate, each conductor part has a contact and can move relative to each other on a Y direction at a free end respectively, so that will be in a closure state against each other contact separately, arc plate extends on the Y direction basically and relative first conductor part has a distance of separation and relative second conductor part has a distance of separation, wherein two of conductor part free ends point to the directions X vertical with the Y direction and face-to-face with arc plate, and wherein distance of separation extends on directions X, it is characterized in that: arc plate has the zone that at least one relative Y direction tilts, thus when contact when closure state separates, it is big that distance of separation S1 and S2 sum become.
To can be starting point in the motion of Y direction below by first conductor part.But also convertiblely or additionally, second conductor part also can be moved, on the Y direction so that contact is separated.In order to make contact closed again after successfully separating, need a conductor part or two conductor parts going up correspondingly motion in the opposite direction with Y side.
Because the zone that relative Y direction tilts, distance of separation S2 increases in a motion section of movable first conductor part at least, make corresponding increase of distance of separation sum and electric arc extinguish soon, these distance of separations appear on the one hand between first conductor part and the arc plate and appear on the other hand between second conductor part and the arc plate.
By making full use of the path of opening of opening path or contact of first conductor part, distance of separation S1 and S2 sum are increased along with the increase of opening distance, then in the make position of contact or the time near make position, can select distance of separation S1 and S2 little, so that electric arc is the diversion contact soon, can obviously reduce undesirable contact material thus and corrode.
In a preferred embodiment, arc plate has the end regions that freely stretches out of a bottom, and this end regions points to the direction of free end of second conductor part and face-to-face with this free end in the closure state of contact.In the case, the distance of relative second conductor part of the end regions that freely stretches out of arc plate should be corresponding to distance of separation S1.The electric arc between contact that helps face-to-face of the end regions that freely stretches out of the free end of second conductor part and arc plate extinguishes soon.
The end regions that freely stretches out of arc plate can be connected by a zone line with the zone of inclination, and this zone line is face-to-face with first conductor part in the make position of contact.In the case, the distance between the free end of the zone line and first conductor part is corresponding to distance of separation S2.This distance of separation S2 is very little in the make position of contact, so that can help electric arc to form soon on energy between the free end of conductor part and arc plate, can make arc extinction between the contact by these electric arcs.
By the zone inclination of Y direction relatively of tilting, the distance between first conductor part and arc plate is along with the change of opening distance increases greatly.If distance of separation S1, S2 sum become excessive, then the electric arc of cross-over connection two distance of separation S1, S2 will disappear with achieving one's goal.
Angle of inclination between the zone of Y direction and inclination is 25 ° to 35 °.Can guarantee by such angle: when contact is opened, on a end towards arc plate of electric arc can not crossed longways attached to the transition between the zone of zone line and inclination, but according to the regional movement of the beeline between second conductor part and the arc plate along inclination.Should point out that in this inclination of the relative Y direction in zone of inclination is not necessarily constant.And the zone that tilts also can have different angles of inclination.Therefore the zone that tilts can be a curve shape or curved shape.
In a preferred embodiment, an end regions that preferably has the top in a hole is connected with the zone of inclination.This hole can be configured slotted hole.This hole can be used on the one hand and will be drained from the zone of the free end of conductor part and arc plate by the air of arc heating.On the other hand, a district can be determined in this hole in the end regions on top, will no longer being removed by this district in the end of arc plate side of the electric arc that constitutes between first conductor part and arc plate and cause arc extinction thus here.
Arc plate can have two fins, their separate each other distances and interconnect by a zone line and/or the end regions by top.In the case, arc plate is a U-shaped in cross-sectional view, and wherein two of U limits constitute by two fins and the base portion of U constitutes by zone line or the end regions by top.The magnetic extinguishing arc of the electric arc that these aspectant fins can be supported in contact to be formed when opening.
The relative conductor part of fin can be at side fixed arc plate.For example in electric switchgear, these fins can be engaged in the corresponding groove, so that the position of the relative conductor part of arc plate, and especially lateral position can be determined uniquely.
In a preferred embodiment, arc plate is by moulding integrally.In the form of implementation with two fins, arc plate can be stamped and then forms U-shaped with simple mode.
First conductor part can be configured and touch bridge, and it is connected second conductor part with one the 3rd conductor part, and wherein the latter can constitute as second conductor part.The first and the 3rd conductor part constitutes the electric output or the input of electric switchgear here.Constitute that first conductor part touch bridge preferably is configured symmetry and on two free ends, respectively have a contact.
Description of drawings
Below describe the present invention in detail by the embodiment shown in the accompanying drawings.Accompanying drawing is represented:
Fig. 1 is according to the schematic diagram of the each several part of switching device of the present invention;
The viewgraph of cross-section of Fig. 2 switching device;
The vertical view of switching device among Fig. 3 Fig. 2;
The lateral cross-sectional view view of Fig. 4 arc plate;
The front view of the arc plate of Fig. 5 Fig. 4;
The vertical view of the arc plate of Fig. 6 Fig. 4; And
The perspective view of the arc plate among Fig. 7 Fig. 4.
Embodiment
Fig. 1 has represented each structure division of a switching device, and these structure divisions at length are illustrated in the preferred implementing form in Fig. 2 and 3 and at it and indicate with mark 1 on the whole.Fig. 1 has represented one first conductor part 2, second conductor part 3 and an arc plate 4, has wherein represented three diverse locations (referring to Fig. 1 a, 1b, 1c) of first conductor part 2 that can move on the Y direction.First conductor part 2 has a contact 5, and this contact for example can be configured little silver plate.Contact 5 is fixed on the downside of free end 6 of first conductor part 2.On the position of first conductor part 2 shown in Fig. 1 a, contact 5 directly abuts on the contact 7, and this contact 7 also is made up of silver or other senior contact material.Contact 7 is fixed on the free end 8 of second conductor part 3.(referring to Fig. 1 a), electric current can flow on second conductor part 3 by contact 5,7 or motion on the contrary by first conductor part 2 in the closure state of two contacts 5,7.
If first conductor part 2 is continued to move on the Y direction by the position shown in Fig. 1 b, then by the configuration of arc plate 4, the distance of separation S2 between first conductor part 2 and arc plate 4 strengthens.Correspondingly, by the motion of first conductor part 2, it is big that distance of separation S1 and S2 sum become.Arc plate 4 is designed in the case in this wise to the distance of conductor part 2,3 or the configuration of arc plate 4, so that electric arc extinguishes soon from contact 5,7 trippings and electric arc 9,10 soon.
In Fig. 1 c, the electric arc 9,10 among Fig. 1 b no longer exists.Here the distance of separation sum is so big, so that electric arc disappears.Therefore between conductor part 2,3, no longer flow through electric current.In order to make contact 5,7 closed again, first conductor part 2 with Y side in the opposite direction on motion, till these contacts are in direct contact with one another, (see Fig. 1 a).
Arc plate 4 has the end regions 11 of a bottom, and this end regions points to free end 8 directions of second conductor part 3 and free end is directly face-to-face therewith.Look up from Y side, the end regions 11 of this bottom is connected with a zone line 12, and this zone line and Y direction are extended abreast.In the closure state of contact 5,7 (as shown in Figure 1a), the free end 6 of this zone line and first conductor part 2 is face-to-face, has determined distance of separation S2 thus.This zone line is connected with the zone 13 of an inclination again.The zone 13 relative Y directions of this inclination have an angle of inclination 14 (seeing Fig. 1 c).Because the zone 13 of this inclination, distance of separation S2 increases along with the increase of opening distance of first conductor part 2.Look up from Y side, connecting the end regions 15 on a top in the back in the zone 13 that tilts, this end regions is directed abreast with the Y direction as zone line 12.
Fig. 2 and the switching device 1 stated above 3 expressions, wherein Fig. 2 is a viewgraph of cross-section and Fig. 3 is a vertical view.In a plastic casing 16 of switching device 1, equipped first conductor part 2 of the bridge form of touching that can on the Y direction, move.Touching bridge 2 is connected to each other conductor part 3a, 3b in make position.Conductor part 3a, 3b represent an input 17 or an output 18, and wherein input and output are also commutative.Touch bridge 2 and on the downside of its corresponding free end 6a, 6b, have two contact 5a, 5b.On the make position of touching bridge 2, contact 5a, 5b abut on respective contacts 7a, the 7b of conductor part 3a, 3b, form a kind of the connection thus between input 17 and output 18.
Relative central axis 19 mirror-symmetrical of the structure of switching device 1, below will be only with reference to the right side of Fig. 2.Corresponding form of implementation also is applicable to the left side of Fig. 2 on its meaning.
Arc plate 4 is face-to-face with the free end 6b, the 8b that touch bridge 2 or conductor part 3b, and the structure of arc plate can be clear that by Fig. 4 to 7.Can be known by Fig. 3 and to see that switching device 1 has that three of having three respective inputs 17 and output 18 are arranged in juxtaposition touches bridge 2, this switching device 1 for example can be represented a protection switch in the three-phase alternating current power technology thus.
Fig. 4 to 7 has represented arc plate 4, as employed arc plate in the switching device 1 of Fig. 2 and 3.Arc plate 4 has the fin 20,21 of two distances that separate each other, and they are connected to each other by a jointing 22.Jointing 22 is basically corresponding to the end regions 15 on the top of arc plate 4, as shown in fig. 1.Constitute a slotted hole 23 in jointing 22 or in the end regions 15 on top, as seeing by knowing among Fig. 2, this slotted hole is face-to-face with the free end 6b that touches bridge 2 in open position (as shown in Figure 2).
Especially in Fig. 4, can find out end regions 11, connected zone line 12, the zone 13 of ensuing inclination and the end regions 15 that extends in the Y direction at last of the bottom of freely stretching out. Fin 20,21 and jointing 22 constitute an explosion chamber in the final installation site of arc plate 4, and free end 8b, the 6b of conductor part 2,3b extend in this explosion chamber.If now begin to open this switching device 1 by the make position of touching bridge 2, then contact 5b lifts from contact 7b, at this moment forms an electric arc between contact 5b, 7b.If open the change of distance and make the distance between the contact become excessive greatly owing to touching bridge 2, arcing (similarly, this also is used in the left side of Fig. 2) between the end regions 11 of the free end 6b and the bottom of freely stretching out and between free end 8b and zone line 12 then.Open the increase of distance along with touching bridge 2, will be on arc plate 4 in the end of arc plate side the moving of the electric arc between free end 8b and arc plate 4 towards the direction of the end regions 15 on top.In the case, it will move along the zone 13 that tilts, and make thus by electric arc and treat that the distance of cross-over connection strengthens.Increasing by this distance just can cause the arc extinction between conductor part 2,3b and the arc plate 4.And when the end in the arc plate side of touching the electric arc between bridge 2 and the arc plate 4 reached the end regions 15 on top, a lower limb 24 of big slotted hole can be moved in this end always.In the case, this lower limb 24 constitutes a zone, and electric arc will extinguish in this zone at the latest.
Preferably come punching press and moulding at the arc plate shown in Fig. 4 to 7 by the thick metallic plate of 1.2mm.
Claims (9)
1. electric switchgear (1), comprise one first conductor part (2) and one second conductor part (3) and an arc plate (4), each conductor part is respectively at a free end (6,8) have a contact (5,7) and can on a Y direction, move relative to each other, so that will be in a closure state against each other contact (5,7) separately, arc plate (4) extends on the Y direction basically and relative first conductor part (2) has a distance of separation (S2) and relative second conductor part (3) has a distance of separation (S1), wherein conductor part (2,3) two free ends (6,8) point to the same directions X vertical and face-to-face with arc plate (4) with the Y direction, and distance of separation (S1 wherein, S2) on directions X, extend, it is characterized in that: arc plate has the zone that at least one relative Y direction tilts, thus when contact when closure state separates, distance of separation (S1, S2) sum becomes big;
Arc plate (4) has the end regions that freely stretches out (11) of a bottom, and this end regions points to the direction of free end (8) of second conductor part (3) and face-to-face with this free end in the closure state of contact (5,7);
The end regions that freely stretches out (11) is connected by a zone line (12) with the zone (13) that tilts, and this zone line is face-to-face with first conductor part (2) in the closure state of contact (5,7).
2. according to the electric switchgear (1) of claim 1, it is characterized in that: the angle of inclination between the zone (13) of Y direction and inclination is 25 ° to 35 °.
3. according to the electric switchgear (1) of claim 1 or 2, it is characterized in that: the end regions on a top (15) is connected with the zone (13) that tilts.
4. according to the electric switchgear (1) of claim 1 or 2, it is characterized in that: arc plate (4) has two fins (20,21), their separate each other distances and interconnect by a jointing (22).
5. according to the electric switchgear (1) of claim 4, it is characterized in that: the relative conductor part (2,3) of fin (20,21) is at side fixed arc plate (4).
6. according to the electric switchgear (1) of claim 1 or 2, it is characterized in that: arc plate (4) is by moulding integrally.
7. according to the electric switchgear (1) of claim 1 or 2, it is characterized in that: first conductor part (2) is configured and touches bridge.
8. according to the electric switchgear (1) of claim 3, it is characterized in that: the end regions on described top (15) has a hole (23).
9. the arc plate (4) that is used for electric switchgear (1) according to one of claim 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202005016600.6 | 2005-10-22 | ||
| DE202005016600U DE202005016600U1 (en) | 2005-10-22 | 2005-10-22 | Electrical switch device for electrical equipment, has conducting parts, each having contact at its end, and arc plate comprising two separating distances, where sum of distances is large when contacts are disconnected from closed condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1953112A CN1953112A (en) | 2007-04-25 |
| CN1953112B true CN1953112B (en) | 2010-12-01 |
Family
ID=35512340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101360300A Expired - Fee Related CN1953112B (en) | 2005-10-22 | 2006-10-20 | Electrical switching device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1777716B1 (en) |
| CN (1) | CN1953112B (en) |
| AT (1) | ATE451708T1 (en) |
| DE (2) | DE202005016600U1 (en) |
| ES (1) | ES2336133T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786465B (en) * | 2017-01-19 | 2018-09-21 | 深圳市海鹏信电子股份有限公司 | Surge protector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117288A1 (en) * | 1982-11-10 | 1984-09-05 | Mitsubishi Denki Kabushiki Kaisha | Switch with arc-extinguishing means |
| EP0124620A1 (en) * | 1982-11-10 | 1984-11-14 | Mitsubishi Denki Kabushiki Kaisha | Switch |
| GB2169450A (en) * | 1984-12-21 | 1986-07-09 | Schupa Elektro Gmbh & Co Kg | A leakage current protection circuit breaker |
| DE4445343A1 (en) * | 1993-12-24 | 1995-06-29 | Schneider Electric Sa | Electromechanical switch with positive PTC resistor type current limiter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3262881B2 (en) * | 1993-01-25 | 2002-03-04 | 三菱電機株式会社 | Switch |
-
2005
- 2005-10-22 DE DE202005016600U patent/DE202005016600U1/en not_active Expired - Lifetime
-
2006
- 2006-10-05 ES ES06020915T patent/ES2336133T3/en active Active
- 2006-10-05 EP EP06020915A patent/EP1777716B1/en active Active
- 2006-10-05 DE DE502006005571T patent/DE502006005571D1/en active Active
- 2006-10-05 AT AT06020915T patent/ATE451708T1/en active
- 2006-10-20 CN CN2006101360300A patent/CN1953112B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117288A1 (en) * | 1982-11-10 | 1984-09-05 | Mitsubishi Denki Kabushiki Kaisha | Switch with arc-extinguishing means |
| EP0124620A1 (en) * | 1982-11-10 | 1984-11-14 | Mitsubishi Denki Kabushiki Kaisha | Switch |
| GB2169450A (en) * | 1984-12-21 | 1986-07-09 | Schupa Elektro Gmbh & Co Kg | A leakage current protection circuit breaker |
| DE4445343A1 (en) * | 1993-12-24 | 1995-06-29 | Schneider Electric Sa | Electromechanical switch with positive PTC resistor type current limiter |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平6-223669A 1994.08.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1777716B1 (en) | 2009-12-09 |
| ATE451708T1 (en) | 2009-12-15 |
| DE502006005571D1 (en) | 2010-01-21 |
| DE202005016600U1 (en) | 2005-12-22 |
| EP1777716A2 (en) | 2007-04-25 |
| CN1953112A (en) | 2007-04-25 |
| EP1777716A3 (en) | 2008-05-07 |
| ES2336133T3 (en) | 2010-04-08 |
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