CN213184181U - Static contact of leakage circuit breaker - Google Patents
Static contact of leakage circuit breaker Download PDFInfo
- Publication number
- CN213184181U CN213184181U CN202022503236.0U CN202022503236U CN213184181U CN 213184181 U CN213184181 U CN 213184181U CN 202022503236 U CN202022503236 U CN 202022503236U CN 213184181 U CN213184181 U CN 213184181U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc striking
- circuit breaker
- positioning block
- extends
- 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
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 29
- 230000007704 transition Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Abstract
The utility model relates to a static contact of leakage circuit breaker. The to-be-solved technical problem of the utility model is to provide an improve magnetic blow-out power, rational in infrastructure, with low costs electric leakage circuit breaker static contact. The utility model adopts the technical scheme that the contact comprises a contact body, a stationary contact and an arc striking block, wherein the contact body comprises a supporting part, the right end of the supporting part is overturned by 180 degrees and extends to form a U-shaped transition part, the U-shaped transition part extends inwards and horizontally to form a contact part, the left end of the supporting part extends upwards in an inclined way to form a connecting part, the connecting part extends horizontally to form an external part, a contact positioning block is arranged on the contact part, and the stationary contact is welded on the contact positioning block; the supporting part is provided with an arc striking socket and a shunt port, and the shunt port is arranged right below the contact positioning block. The utility model has the advantages that: the damage of the arc column to the static contact is reduced, and the magnetic blow-out force is improved; reasonable structure and low cost.
Description
Technical Field
The utility model relates to a static contact of leakage circuit breaker.
Background
The residual current circuit breaker takes on the double tasks of protection and control circuit, and plays an important role in the safety, reliability and practicability of the whole line system. The static contact is one of the important components of the leakage circuit breaker, when short-circuit current is generated, a tripping mechanism of the circuit breaker can be tripped instantly to enable the operating mechanism to act, and the moving contact and the static contact are separated under the driving of the operating mechanism and the action of electric repulsion. When the moving contact is separated from the fixed contact, electric arc is generated between the moving contact and the fixed contact, moves towards the direction of the arc extinguishing system under the action of the magnetic field, and is finally cooled and extinguished in the arc extinguishing system. In order to introduce an arc into the arc chute, a magnetic blow method is generally employed, i.e. a current loop is arranged such that the magnetic field it generates interacts with the arc current to force the arc into the arc chute. Therefore, the static contact has great influence on the breaking capacity and stability of the circuit breaker, the magnetic blowing force is improved, the design structure is reasonable, and the static contact for saving the cost is always the research direction.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the to-be-solved technical problem of the utility model is to provide an improve magnetic blow-out force, rational in infrastructure, with low costs electric leakage circuit breaker static contact.
The utility model discloses a technical scheme that the static contact of the residual current circuit breaker adopts comprises a contact body, a static contact and an arc striking block which are arranged on the contact body, and is characterized in that the contact body comprises a supporting part, the right end of the supporting part is overturned for 180 degrees and extends to form a U-shaped transition part, the U-shaped transition part extends inwards and horizontally to form a contact part, the left end of the supporting part extends upwards in an inclined way to form a connecting part, the connecting part extends horizontally to form an external part, a contact positioning block is arranged on the contact part, and the static contact is welded on the contact positioning block;
the support part is provided with an arc striking socket and a shunt opening, the shunt opening is arranged under the contact positioning block, the arc striking block is provided with an arc striking plug-in connector which is inserted into the arc striking socket, the arc striking plug-in connector extends obliquely towards the direction close to the connecting part to form an arc striking head, two sides of the arc striking plug-in connector extend outwards to form an L-shaped arc striking fixture block, and the support part is further provided with an arc striking clamping opening corresponding to the L-shaped arc striking fixture block.
The bottom of the contact part is provided with a square groove, and the area of the flow dividing port is larger than that of the square groove.
The external connection portion is provided with a fixing hole and an electricity connection hole, the electricity connection hole is close to the connecting portion, and the fixing hole is far away from the connecting portion.
External connection part gaps are arranged on two sides of the end part of the external connection part.
The contact positioning block is of a square structure.
The utility model discloses the advantage of electric leakage circuit breaker static contact lies in: the residence time of the electric arc at the static contact is shortened, the damage of the arc column to the static contact is reduced, and the service life of the static contact is further prolonged; in addition, the integral temperature rise is obviously reduced; the magnetic blowing force is improved; reasonable structure and low cost.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of a static contact of the leakage circuit breaker of the present invention;
fig. 2 is a schematic view of a second structure of the fixed contact of the residual current circuit breaker of the present invention;
fig. 3 is a schematic view of a third structure of the static contact of the residual current circuit breaker of the present invention;
fig. 4 is a schematic structural diagram of the arc-striking block of the present invention.
Detailed Description
As shown in fig. 1-4, the static contact of the residual current circuit breaker of the present invention comprises a contact body 1, and a static contact 2 and an arc striking block 3 which are arranged on the contact body 1, wherein the contact body 1 comprises a support portion 5, the right end of the support portion 5 is turned over 180 ° and extends to form a U-shaped transition portion 6, the U-shaped transition portion 6 extends horizontally inwards to form a contact portion 9, the left end of the support portion 5 extends obliquely upwards to form a connection portion 7, the connection portion 7 extends horizontally to form an external portion 8, a contact positioning block 13 is arranged on the contact portion 9, and the static contact 2 is welded on the contact positioning block 13; the supporting portion 5 is provided with an arc striking socket 10 and a shunt opening 11, the shunt opening 11 is located under the contact positioning block 13, the arc striking block 3 is provided with an arc striking plug 16 for being plugged into the arc striking socket 10, the arc striking plug 16 extends obliquely towards the direction close to the connecting portion 7 to form an arc striking head 17, two sides of the arc striking plug 16 extend outwards to form an L-shaped arc striking fixture block 18, and the supporting portion 5 is further provided with an arc striking clamping opening 14 corresponding to the L-shaped arc striking fixture block 18. The structure shortens the staying time of the electric arc at the static contact, reduces the damage of the arc column to the static contact, and further prolongs the service life of the static contact; in addition, the integral temperature rise is obviously reduced; the magnetic blowing force is improved.
The bottom of the contact part 9 is provided with a square groove 20, and the area of the flow dividing port 11 is larger than that of the square groove 20.
The external connection portion 8 is provided with a fixing hole 21 and an electricity connection hole 42, the electricity connection hole 42 is close to the connection portion 7, and the fixing hole 21 is far away from the connection portion 7.
And external part notches 23 are formed in two sides of the end part of the external part 8 and used for positioning bakelite and saving materials.
The contact positioning block 13 is of a square structure, so that the static contact can be conveniently welded.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention are all included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a static contact of residual current circuit breaker, includes contact body (1) and establishes stationary contact (2) and striking piece (3) on contact body (1), its characterized in that: the contact head body (1) comprises a supporting part (5), the right end of the supporting part (5) is turned for 180 degrees and extends to form a U-shaped transition part (6), the U-shaped transition part (6) extends inwards and horizontally to form a contact head part (9), the left end of the supporting part (5) extends upwards in an inclined mode to form a connecting part (7), the connecting part (7) extends horizontally to form an external part (8), a contact positioning block (13) is arranged on the contact head part (9), and the static contact (2) is welded on the contact positioning block (13);
the arc striking mechanism is characterized in that an arc striking socket (10) and a shunt opening (11) are arranged on the supporting portion (5), the shunt opening (11) is arranged under the contact positioning block (13), the arc striking block (3) is provided with an arc striking plug-in head (16) which is used for being plugged in the arc striking socket (10), the arc striking plug-in head (16) obliquely extends towards the direction close to the connecting portion (7) to form an arc striking head (17), two sides of the arc striking plug-in head (16) outwards extend to form an L-shaped arc striking clamping block (18), and an arc striking clamping opening (14) corresponding to the L-shaped arc striking clamping block (18) is further arranged on the supporting portion (5).
2. The fixed contact of the residual current circuit breaker of claim 1, wherein: the bottom of the contact part (9) is provided with a square groove (20), and the area of the flow dividing port (11) is larger than that of the square groove (20).
3. The fixed contact of the residual current circuit breaker of claim 1, wherein: be equipped with fixed orifices (21) on external portion (8) and connect electric hole (42), it is close to connect electric hole (42) connecting portion (7), fixed orifices (21) are kept away from connecting portion (7).
4. The fixed contact of the residual current circuit breaker of claim 1, wherein: external connecting part gaps (23) are arranged on two sides of the end part of the external connecting part (8).
5. The fixed contact of the residual current circuit breaker of claim 1, wherein: the contact positioning block (13) is of a square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022503236.0U CN213184181U (en) | 2020-11-03 | 2020-11-03 | Static contact of leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022503236.0U CN213184181U (en) | 2020-11-03 | 2020-11-03 | Static contact of leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213184181U true CN213184181U (en) | 2021-05-11 |
Family
ID=75781296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022503236.0U Expired - Fee Related CN213184181U (en) | 2020-11-03 | 2020-11-03 | Static contact of leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213184181U (en) |
-
2020
- 2020-11-03 CN CN202022503236.0U patent/CN213184181U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |