CN108831807B - Bimetal sheet connection structure of molded case circuit breaker - Google Patents
Bimetal sheet connection structure of molded case circuit breaker Download PDFInfo
- Publication number
- CN108831807B CN108831807B CN201810968099.2A CN201810968099A CN108831807B CN 108831807 B CN108831807 B CN 108831807B CN 201810968099 A CN201810968099 A CN 201810968099A CN 108831807 B CN108831807 B CN 108831807B
- Authority
- CN
- China
- Prior art keywords
- bimetal
- circuit breaker
- transition
- connecting plate
- case circuit
- 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.)
- Active
Links
- 230000007704 transition Effects 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
Landscapes
- Breakers (AREA)
Abstract
The invention discloses a bimetal sheet connecting structure of a molded case circuit breaker, which comprises a bimetal sheet and a connecting conductor, wherein a transition connecting plate is fixed at the top of the bimetal sheet, the whole transition connecting plate is an L-shaped bending plate and comprises a first connecting part and a second connecting part, the first connecting part is connected with the bimetal sheet, the connecting conductor is welded and fixed on the second connecting part, and the melting point of the transition connecting plate is higher than that of the bimetal sheet. The bimetal sheet connecting structure of the plastic shell circuit breaker is additionally provided with the transition connecting plate, the connecting conductor is welded on the transition connecting plate, and the transition connecting plate is made of a material with a higher melting point, so that the transition connecting plate can be prevented from fusing when bearing a larger short-circuit current. The structure is simple, and the implementation is easy; and moreover, the easy fusing of the bimetallic strip can be effectively avoided, and the stable and reliable work of the molded case circuit breaker is ensured.
Description
Technical Field
The invention relates to a molded case circuit breaker, in particular to a bimetal sheet connecting structure of the molded case circuit breaker.
Background
The molded case circuit breaker can automatically cut off the current after the current exceeds the trip setting. Plastic housing refers to the use of plastic insulators as the housing of the device to isolate the conductors from each other and from the grounded metal parts. Molded case circuit breakers typically contain a thermo-magnetic trip unit, while large sized molded case circuit breakers are equipped with solid state trip sensors. The tripping unit is divided into: thermomagnetic trip and electronic trip.
The direct heating type molded case circuit breaker is a common one, at present, a connecting conductor of the existing direct heating type molded case circuit breaker is directly welded on a bimetallic strip, the connecting mode causes that the resistance of the contact position of the connecting conductor and the bimetallic strip is larger, the melting point of the bimetallic strip is not high, and the bimetallic strip is easy to fuse when being subjected to larger short-circuit current due to the influence of residual stress after welding.
Disclosure of Invention
The invention aims to provide a bimetal connecting structure of a plastic case circuit breaker, which solves the problem that a direct welding connection conductor on a bimetal of a direct heating type plastic case circuit breaker in the prior art is easy to fuse the bimetal.
To achieve the purpose, the invention adopts the following technical scheme:
The utility model provides a bimetal sheet connection structure of moulded case circuit breaker, its includes bimetallic strip and connecting conductor, wherein, the top of bimetallic strip is fixed with transition connecting plate, transition connecting plate wholly is the board of bending of "L" type, and it includes first connecting portion and second connecting portion, first connecting portion with the bimetallic strip is connected, connecting conductor welded fastening is on the second connecting portion, transition connecting plate's fusing point is higher than the fusing point of bimetallic strip.
In particular, the first connection portion is fixedly connected to the top of the bimetal by welding or riveting.
In particular, the second connecting portion is arranged vertically, and the connecting conductor is fixed on the inner side surface of the second connecting portion in a welding way.
In particular, the second connecting portion is arranged vertically, and the connecting conductor is fixed on the outer side face of the second connecting portion in a welding mode.
In particular, the transition connecting plate is integrally bent and formed by a copper plate.
In particular, the connecting conductor comprises a connecting wire and a connecting plate, one end of the connecting wire is fixedly arranged on the connecting plate, and the other end of the connecting wire is welded and fixed on the second connecting part.
Compared with the prior art, the bimetal connecting structure of the molded case circuit breaker has the beneficial effects that the transition connecting plate is additionally arranged, the connecting conductor is welded on the transition connecting plate, and the transition connecting plate is made of a material with a higher melting point, so that the transition connecting plate can be prevented from fusing when bearing a larger short-circuit current. The structure is simple, and the implementation is easy; and moreover, the easy fusing of the bimetallic strip can be effectively avoided, and the stable and reliable work of the molded case circuit breaker is ensured.
Drawings
Fig. 1 is a schematic perspective view of a bimetal connection structure of a molded case circuit breaker according to an embodiment of the present invention.
In the figure:
1. Bimetallic strips; 2. a connection conductor; 20. a connecting wire; 21. a second connection conductor; 3. a transition connecting plate; 30. a first connection portion; 31. and a second connecting part.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic perspective view of a bimetal connecting structure of a molded case circuit breaker according to an embodiment of the present invention.
In this embodiment, a bimetal sheet connection structure of a molded case circuit breaker includes a bimetal sheet 1, a connection conductor 2 and a transition connection board 3, the transition connection board 3 is bent integrally by a copper plate to form an "L" structure, and includes a first connection portion 30 and a second connection portion 31, the first connection portion 30 is connected to the top of the bimetal sheet 1 by any mode of welding or riveting, the connection conductor 2 includes a connection wire 20 and a connection board 21, one end of the connection wire 20 is fixedly arranged on the connection board 21, the other end is welded and fixed on the second connection portion 31, the melting point of the transition connection board 3 is higher than that of the bimetal sheet 1, so that the transition connection board 3 can be prevented from fusing when bearing a larger short-circuit current, and the bimetal sheet 1 is prevented from fusing easily.
The second connection portion 31 is vertically disposed, and when the connection line 20 is welded, the connection line 20 may be welded to an inner side or an outer side of the second connection portion 31 according to equipment arrangement requirements.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above examples, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The bimetal sheet connecting structure of the plastic case circuit breaker comprises a bimetal sheet and a connecting conductor, and is characterized in that a transition connecting plate is fixed at the top of the bimetal sheet, the transition connecting plate is an L-shaped bending plate, the transition connecting plate comprises a first connecting part and a second connecting part, the first connecting part is connected with the bimetal sheet, the connecting conductor is welded and fixed on the second connecting part, and the melting point of the transition connecting plate is higher than that of the bimetal sheet;
The connecting conductor comprises a connecting wire and a connecting plate, one end of the connecting wire is fixedly arranged on the connecting plate, and the other end of the connecting wire is fixedly welded on the second connecting part.
2. The bimetal connection structure of the molded case circuit breaker according to claim 1, wherein the first connection part is fixedly connected to the top of the bimetal by welding or riveting.
3. The bimetal connection structure of the molded case circuit breaker according to claim 1, wherein the second connection portion is vertically disposed, and the connection conductor is welded and fixed to an inner side surface of the second connection portion.
4. The bimetal connection structure of the molded case circuit breaker according to claim 1, wherein the second connection portion is vertically disposed, and the connection conductor is welded and fixed to an outer side surface of the second connection portion.
5. The bimetal connection structure of the molded case circuit breaker according to claim 1, wherein the transition connection plate is integrally bent and formed of a copper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968099.2A CN108831807B (en) | 2018-08-23 | 2018-08-23 | Bimetal sheet connection structure of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968099.2A CN108831807B (en) | 2018-08-23 | 2018-08-23 | Bimetal sheet connection structure of molded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108831807A CN108831807A (en) | 2018-11-16 |
| CN108831807B true CN108831807B (en) | 2024-05-10 |
Family
ID=64150549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810968099.2A Active CN108831807B (en) | 2018-08-23 | 2018-08-23 | Bimetal sheet connection structure of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108831807B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09115411A (en) * | 1995-10-16 | 1997-05-02 | Mitsubishi Electric Corp | Circuit breaker |
| DE19835885A1 (en) * | 1998-08-07 | 2000-02-10 | Siemens Ag | Adjusting carrier for electromechanical components e.g. bimetallic elements |
| KR200390554Y1 (en) * | 2005-04-22 | 2005-07-22 | (주)광원테크 | Molded case circuit breaker that use horseshoe type electric magnetic substance |
| CN102426996A (en) * | 2011-07-28 | 2012-04-25 | 法泰电器（江苏）股份有限公司 | Overload protecting circuit connecting device of circuit breaker |
| CN202651023U (en) * | 2012-06-01 | 2013-01-02 | 浙江鼎威科技有限公司 | Molded case circuit breaker with shunting thermo tripping protection |
| CN203983208U (en) * | 2014-07-21 | 2014-12-03 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker of plastic casing |
| CN106384698A (en) * | 2016-11-17 | 2017-02-08 | 国网福建省电力有限公司 | Low-voltage distributed power supply grid connecting switch |
| CN208570499U (en) * | 2018-08-23 | 2019-03-01 | 无锡新宏泰电器科技股份有限公司 | A kind of bimetal leaf connection structure of breaker of plastic casing |
-
2018
- 2018-08-23 CN CN201810968099.2A patent/CN108831807B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09115411A (en) * | 1995-10-16 | 1997-05-02 | Mitsubishi Electric Corp | Circuit breaker |
| DE19835885A1 (en) * | 1998-08-07 | 2000-02-10 | Siemens Ag | Adjusting carrier for electromechanical components e.g. bimetallic elements |
| KR200390554Y1 (en) * | 2005-04-22 | 2005-07-22 | (주)광원테크 | Molded case circuit breaker that use horseshoe type electric magnetic substance |
| CN102426996A (en) * | 2011-07-28 | 2012-04-25 | 法泰电器（江苏）股份有限公司 | Overload protecting circuit connecting device of circuit breaker |
| CN202651023U (en) * | 2012-06-01 | 2013-01-02 | 浙江鼎威科技有限公司 | Molded case circuit breaker with shunting thermo tripping protection |
| CN203983208U (en) * | 2014-07-21 | 2014-12-03 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker of plastic casing |
| CN106384698A (en) * | 2016-11-17 | 2017-02-08 | 国网福建省电力有限公司 | Low-voltage distributed power supply grid connecting switch |
| CN208570499U (en) * | 2018-08-23 | 2019-03-01 | 无锡新宏泰电器科技股份有限公司 | A kind of bimetal leaf connection structure of breaker of plastic casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108831807A (en) | 2018-11-16 |
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