CN102044388A - Static contact structure of moulded case circuit breaker - Google Patents
Static contact structure of moulded case circuit breaker Download PDFInfo
- Publication number
- CN102044388A CN102044388A CN 201110007148 CN201110007148A CN102044388A CN 102044388 A CN102044388 A CN 102044388A CN 201110007148 CN201110007148 CN 201110007148 CN 201110007148 A CN201110007148 A CN 201110007148A CN 102044388 A CN102044388 A CN 102044388A
- Authority
- CN
- China
- Prior art keywords
- arc
- grid
- grid sheet
- arc extinguishing
- conductive rod
- 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.)
- Granted
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- 230000003068 static effect Effects 0.000 title claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005452 bending Methods 0.000 claims abstract description 21
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052709 silver Inorganic materials 0.000 claims abstract description 20
- 239000004332 silver Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
本发明公开一种塑壳断路器的静触头结构，静导电杆左端为电流进线端、右端为电流出线端且右端处向左折弯成一个折弯脚，折弯脚上表面固接有银触点；静导电杆中间部分有一撕口部分，撕口部分向左折弯形成引弧栅片，引弧栅片靠近银触点并位于灭弧栅片的下端且引弧栅片的上部分与灭弧栅片平行；将静导电杆的一部分作为引弧栅片，避免了灭弧室中安装引弧栅片的过程；引弧栅片折弯后与灭弧室中的灭弧栅片角度平行，有利于电弧进入灭弧室；铁片可以增强磁场，以吸引电弧，弧根在从静触点上跳转到引弧栅片上后，引弧栅片能够继续承载较大的短路电流，增强灭弧效果，能避免电弧在静触点处燃烧，保障断路器具有良好的开断能力。
The invention discloses a static contact structure of a molded case circuit breaker. The left end of the static conductive rod is the current inlet end, the right end is the current outlet end, and the right end is bent to the left to form a bending foot, and the upper surface of the bending foot is fixedly connected with a Silver contact; there is a tear part in the middle part of the static conductive rod, and the tear part is bent to the left to form an arc strike grid, which is close to the silver contact and located at the lower end of the arc quench grid and the upper part of the arc strike grid Parallel to the arc extinguishing grid; a part of the static conductive rod is used as the arc extinguishing grid, which avoids the process of installing the arc extinguishing grid in the arc extinguishing chamber; the arc extinguishing grid is bent and connected to the arc extinguishing grid in the arc extinguishing The angle is parallel, which is beneficial for the arc to enter the arc extinguishing chamber; the iron sheet can enhance the magnetic field to attract the arc, and after the arc root jumps from the static contact to the arc grid, the arc grid can continue to carry a large short-circuit current , enhance the arc extinguishing effect, can prevent the arc from burning at the static contact, and ensure that the circuit breaker has a good breaking ability.
Description
Technical field
The present invention relates to a kind of breaker of plastic casing, be specifically related to the static contact structure of breaker of plastic casing, belong to the low-voltage electrical technical field.
Background technology
The fixed contact of existing breaker of plastic casing comprises that static conductive rod and the silver contact made by silver-plated copper billet form.When circuit breaker cut-offs, the dynamic and static contact of the contact apparatus of breaker of plastic casing is scolded when holding can produce electric arc, because the contact moving line of moving contact is in the cavity volume of the arc extinguishing grid pieces of arc-control device, so electric arc enters arc extinguishing grid pieces under electrodynamic action, ARC CUTTING is become the short arc of a series of series connection, electric arc is attenuated and improve arc voltage fast, thereby reach the effect of arc extinguishing.In this course, the effect of fixed contact striking grid sheet is important, if striking grid sheet and the reliable equipotential of fixed contact then can make the arc root of electric arc one utmost point transfer to like a cork on the striking pin grid sheet, reduce of the stop of arc root, also reduce the scaling loss of electric arc fixed contact at fixed contact.Fixed contact striking grid sheet at present commonly used is general the same with other arc extinguishing grid pieces be installed on arc control device interior after, utilize its position near fixed contact, in the hope of reaching the equipotential effect of striking grid sheet and fixed contact, and actual be that the position is close, not being reliable contact, is not reliable equipotential therefore; Also have striking grid sheet rivet welding on fixed contact, riveted joint seems reliably and contacts, but riveted joint face is after all little, and contact resistance is big, is unfavorable for drainage, and has also increased the operation of rivet welding at fit on.
Summary of the invention
The static contact structure of striking grid sheet and fixed contact being formed the breaker of plastic casing of one that the purpose of this invention is to provide a kind of reliable in structure, easy for installation and function admirable.
The technical solution used in the present invention is: the present invention includes the static conductive rod and the silver contact of U type structure, the static conductive rod left end is that electric current end of incoming cables, right-hand member are that electric current leading-out terminal and right-hand member place are bent into a bending leg left, and the bending leg upper surface is connected with silver contact; The static conductive rod mid portion has a tearing notch part, and the bending left of tearing notch part forms striking grid sheet, striking grid sheet near silver contact and be positioned at the lower end of arc extinguishing grid pieces and the top of striking grid sheet parallel with arc extinguishing grid pieces.
Further, have a groove on the static conductive rod in striking grid sheet left side, be close to the iron plate that a structure matches on the left surface of striking grid sheet, the bottom of iron plate is extended a boss left, and boss and groove match; Another boss is extended at the top of iron plate to the right, and the open slot on another boss and the striking grid sheet end face matches.
The invention has the beneficial effects as follows:
1, with the part of static conductive rod as striking grid sheet, avoided installing in the arc control device process of striking grid sheet; Parallel after the bending of striking grid sheet with the arc extinguishing grid pieces angle in the arc control device, help electric arc and enter arc control device; The rounding off face of striking grid sheet bending leg helps electric arc and transfers to fast on the striking grid sheet from fixed contact;
2, the iron plate of riveting on the striking grid sheet can strengthen magnetic field, to attract electric arc, the arc root is after jumping on the striking grid sheet from fixed contact, striking grid sheet can continue to carry bigger short circuit current, strengthen arc quenching effect, can avoid electric arc in the burning of fixed contact place, thereby be ensured that circuit breaker has good connecting-disconnecting function.
Description of drawings
Fig. 1 is a structure chart of the present invention;
Fig. 2 is the structure chart of static conductive rod 1 among Fig. 1;
Fig. 3 is the structure enlarged drawing of iron plate 3 among Fig. 1;
Among the figure: 1. static conductive rod; 2. silver contact; 3. iron plate; 4. arc extinguishing grid pieces; 11. striking grid sheet; 12. groove; 13. bending leg; 31,32. boss; 111. open slot; A. bending angle.
Embodiment
Referring to Fig. 1-2, the present invention includes electroplate static conductive rod 1 and silver contact 2, wherein, static conductive rod 1 is a U type structure, the left end of static conductive rod 1 is the electric current end of incoming cables, right-hand member is the electric current leading-out terminal, and the electric current leading-out terminal place of right-hand member is bent into a bending leg 13 left, fixing silver contact 2 on the upper surface of bending leg 13.
At the mid portion of static conductive rod 1 left a tearing notch part is arranged, the bending left of tearing notch part forms striking grid sheet 11, striking grid sheet 11 is arranged in the lower end of the arc extinguishing grid pieces 4 of arc control device, be that striking grid sheet 11 is to the direction bending of electric current end of incoming cables, the magnetic field that current direction produced in the striking grid sheet 11 helps producing the electric arc power of (promptly to arc extinguishing grid pieces 4 roots) motion left that attracts like this, and the arrow shown in Fig. 1 is the flow direction of electric current through striking grid sheet 11.The bending part of striking grid sheet 11 is an arc surface, makes striking grid sheet 11 as far as possible near silver contact 2.On striking grid sheet 11 end faces, be provided with an open slot 111.Requirement to the bending angle a of striking grid sheet 11 is: its top is parallel with the arc extinguishing grid pieces 4 in being installed in arc control device after making 11 bendings left of striking grid sheet; the electric arc that helps like this on the static conductive rod 1 is transferred on the striking grid sheet 11 with comparalive ease; can reduce the scaling loss of electric arc, protect silver contact 2 simultaneously silver contact 2.
Referring to Fig. 1-3, on the static conductive rod 1 in striking grid sheet 11 left sides, has a groove 12; Be close to the iron plate 3 that a structure matches on the left surface of striking grid sheet 11, promptly iron plate 3 also is bent into the structure of bending angle a, and striking grid sheet 11 passes through riveted and fixed with iron plate 3.The bottom of iron plate 3 is extended a boss 32 left, and boss 32 matches fixing with groove 12 on the static conductive rod 1, with reliable location iron plate 3, prevents that iron plate 3 riveted joint posterior ends from upwards lifting.Another boss 31 is extended at the top of iron plate 3 to the right, and another boss 31 matches fixing with open slot 111 on striking grid sheet 11 end faces.During installation, iron plate 3 is riveted in the open slot 111 on striking grid sheet 11 end faces, can fits tightly with striking grid sheet 11.Fixed iron piece 3 can strengthen magnetic field on striking grid sheet 11, attracts electric arc, makes the arc root jump on the striking grid sheet 11 from silver contact 2 after, and striking grid sheet 11 can also continue to carry bigger short circuit current, strengthens arc quenching effect.
Striking grid sheet 11 of the present invention is the part of static conductive rod 1, so striking grid sheet 11 is reliable equipotential with static conductive rod 1.When circuit breaker cut-offs, thereby electric arc can low weight loose ground be jumped onto striking grid sheet 11 and is entered into arc control device.When electric arc draws back, because silver contact 2 and striking grid sheet 11 equipotentials, arc root on the silver contact 2 is transferred on the striking grid sheet 11 at an easy rate, between static conductive rod 1 end of incoming cables, striking grid sheet 11, arc extinguishing grid pieces 4, moving contact, form current circuit successively, the electric arc on silver contact 2 surfaces is shifted rapidly, avoid electric arc on silver contact 2, to burn, thereby ensured that circuit breaker has good connecting-disconnecting function.
Claims (3)
1. the static contact structure of a breaker of plastic casing, the static conductive rod (1) and the silver contact (2) that comprise U type structure, it is characterized in that: static conductive rod (1) left end is that electric current end of incoming cables, right-hand member are that electric current leading-out terminal and right-hand member place are bent into a bending leg (13) left, and bending leg (13) upper surface is connected with silver contact (2); Static conductive rod (1) mid portion has a tearing notch part, the bending left of tearing notch part forms striking grid sheets (11), striking grid sheet (11) near silver contact (2) and be positioned at the lower end of arc extinguishing grid pieces (4) and the top of striking grid sheet (11) parallel with arc extinguishing grid pieces (4).
2. the static contact structure of a kind of breaker of plastic casing according to claim 1, it is characterized in that: have a groove (12) on the static conductive rod (1) in striking grid sheet (11) left side, be glued with the iron plate (3) that a structure matches on the left surface of striking grid sheet (11), the bottom of iron plate (3) is extended with a boss (32) left, and boss (32) matches with groove (12); The top of iron plate (3) is extended with another boss (31) to the right, establishes an open slot (111) that matches with another boss (31) on striking grid sheet (11) end face.
3. the static contact structure of a kind of breaker of plastic casing according to claim 1, it is characterized in that: the bending part of striking grid sheet (11) is an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007148 CN102044388B (en) | 2011-01-14 | 2011-01-14 | Static contact structure of a molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007148 CN102044388B (en) | 2011-01-14 | 2011-01-14 | Static contact structure of a molded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102044388A true CN102044388A (en) | 2011-05-04 |
| CN102044388B CN102044388B (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110007148 Active CN102044388B (en) | 2011-01-14 | 2011-01-14 | Static contact structure of a molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102044388B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280324A (en) * | 2011-05-23 | 2011-12-14 | 镇江泰丰电工设备制造有限公司 | Contact used for high-voltage circuit breaker |
| CN102543593A (en) * | 2012-03-08 | 2012-07-04 | 江苏辉能电气有限公司 | Method for mounting rotating shaft of molded case circuit breaker |
| CN108597941A (en) * | 2018-07-18 | 2018-09-28 | 环宇集团浙江高科股份有限公司 | A kind of breaker of plastic casing static contact arc eliminating module |
| CN109013909A (en) * | 2018-09-19 | 2018-12-18 | 上海晨昌精密模具有限公司 | A kind of hollow part pneumatics bending and molding class progressive die |
| CN109494133A (en) * | 2019-01-09 | 2019-03-19 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact structure of breaker |
| CN109559947A (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 multipole circuit breaker |
| CN109616390A (en) * | 2018-12-28 | 2019-04-12 | 天津京人电器有限公司 | A kind of multipole switch |
| CN110034000A (en) * | 2019-05-08 | 2019-07-19 | 宁夏力成电气集团有限公司 | A kind of striking static contact and its breaker of plastic casing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61133528A (en) * | 1984-11-30 | 1986-06-20 | 三菱電機株式会社 | Circuit breaker |
| CN1525514A (en) * | 2003-09-15 | 2004-09-01 | 正泰集团公司 | A static contact panel of plastic shell circuit breaker |
| CN2731692Y (en) * | 2004-05-24 | 2005-10-05 | 通用电气公司 | Circuit breaker |
| CN101853751A (en) * | 2009-11-20 | 2010-10-06 | 大全集团有限公司 | Circuit breaker arc extinguishing system |
-
2011
- 2011-01-14 CN CN 201110007148 patent/CN102044388B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61133528A (en) * | 1984-11-30 | 1986-06-20 | 三菱電機株式会社 | Circuit breaker |
| CN1525514A (en) * | 2003-09-15 | 2004-09-01 | 正泰集团公司 | A static contact panel of plastic shell circuit breaker |
| CN2731692Y (en) * | 2004-05-24 | 2005-10-05 | 通用电气公司 | Circuit breaker |
| CN101853751A (en) * | 2009-11-20 | 2010-10-06 | 大全集团有限公司 | Circuit breaker arc extinguishing system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280324A (en) * | 2011-05-23 | 2011-12-14 | 镇江泰丰电工设备制造有限公司 | Contact used for high-voltage circuit breaker |
| CN102543593A (en) * | 2012-03-08 | 2012-07-04 | 江苏辉能电气有限公司 | Method for mounting rotating shaft of molded case circuit breaker |
| CN102543593B (en) * | 2012-03-08 | 2014-06-04 | 江苏辉能电气有限公司 | Method for mounting rotating shaft of molded case circuit breaker |
| CN109559947A (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 multipole circuit breaker |
| CN108597941A (en) * | 2018-07-18 | 2018-09-28 | 环宇集团浙江高科股份有限公司 | A kind of breaker of plastic casing static contact arc eliminating module |
| CN109013909A (en) * | 2018-09-19 | 2018-12-18 | 上海晨昌精密模具有限公司 | A kind of hollow part pneumatics bending and molding class progressive die |
| CN109616390A (en) * | 2018-12-28 | 2019-04-12 | 天津京人电器有限公司 | A kind of multipole switch |
| CN109494133A (en) * | 2019-01-09 | 2019-03-19 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact structure of breaker |
| CN110034000A (en) * | 2019-05-08 | 2019-07-19 | 宁夏力成电气集团有限公司 | A kind of striking static contact and its breaker of plastic casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102044388B (en) | 2013-02-27 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220516 Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. Address before: 212132 mechanical and Electrical Industrial Park, Dagang East Road, Dagang District, Zhenjiang, Jiangsu A5 Patentee before: Jiangsu Phono Electric Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Eaton Huineng low voltage electrical appliances (Jiangsu) Co.,Ltd. Address before: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee before: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |