CN109494133A - A kind of contact structure of breaker - Google Patents
A kind of contact structure of breaker Download PDFInfo
- Publication number
- CN109494133A CN109494133A CN201910018838.6A CN201910018838A CN109494133A CN 109494133 A CN109494133 A CN 109494133A CN 201910018838 A CN201910018838 A CN 201910018838A CN 109494133 A CN109494133 A CN 109494133A
- Authority
- CN
- China
- Prior art keywords
- contact
- height
- stationary contact
- center
- breaker
- 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.)
- Pending
Links
- 238000010891 electric arc Methods 0.000 abstract description 8
- 230000005684 electric field Effects 0.000 abstract description 4
- 238000002679 ablation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Landscapes
- Circuit Breakers (AREA)
Abstract
A kind of contact structure of breaker, belongs to low voltage electrical apparatus technology field.Include: a dynamic guide rod, is fixed with movable contact thereon；One quiet guide rod, is fixed with stationary contact thereon；One is installed on the arc striking piece on quiet guide rod, feature: the generally rectangular shape of the stationary contact, which is removing outside a side far from arc striking piece, and the height of at least one side is higher than the height of stationary contact dot center in excess-three side.When movable contact and stationary contact are gradually disengaged, since the height of stationary contact point edge is higher than the height at center, therefore the electric field strength of stationary contact point edge is higher than the electric field strength at center, so that electric arc have leave contact center and fast transfer to contact edges trend, electric arc is avoided in the ablation of contact center, improve the electric life and interrupting performance of breaker, it is ensured that the reliability of breaker entirety.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology fields, and in particular to a kind of contact structure of breaker.
Background technique
Critical elements of the low-voltage circuit breaker as low voltage electric network particularly, can when occurring Short-Circuit High Current in power grid
Rapid disjunction circuit, to guarantee that power grid is without damage.
When the dynamic/static contact of breaker will appear electric arc in opening procedure, the presence of electric arc touches the sound of breaker
Point can be by rapid ablation, so that the connection of breaker is influenced, since the contact area of sound contact is largely in contact
The heart, it is therefore necessary to which pilot arc is transferred out outward from the center of contact, i.e., is transferred to the arc root on stationary contact from center
Edge, then from edge transitions to arc striking piece.
Summary of the invention
The invention aims to provide a kind of contact structure of breaker, for accelerating transfer of the electric arc on stationary contact
Speed, to improve the electric life and interrupting performance of breaker, it is ensured that the reliability of breaker entirety.
The purpose of the present invention is in this way to reach, a kind of contact structure of breaker, comprising: a dynamic guide rod, it is solid thereon
Surely there is movable contact；One quiet guide rod, is fixed with stationary contact thereon；One is installed on the arc striking piece on quiet guide rod, and the stationary contact is big
Body is rectangular, which is removing outside a side far from arc striking piece, and in excess-three side at least side
Height is higher than the height of stationary contact dot center.
In a specific embodiment of the invention, height of the stationary contact close to the first side of arc striking piece side
Degree is higher than the height of stationary contact dot center.
In another specific embodiment of the invention, perpendicular to the height of two second sides of the first side
Degree is higher than the height of stationary contact dot center.
In another specific embodiment of the invention, the height of the first side and second side is higher than stationary contact
The size of the height of dot center is 2~3mm.
The present invention due to after adopting the above structure, having the advantages that when movable contact and stationary contact are gradually disengaged, by
It is higher than the height at center in the height of stationary contact point edge, therefore the electric field strength of stationary contact point edge is higher than the electric field strength at center,
So that electric arc, which has, leaves contact center and fast transfer avoids electric arc in the burning of contact center to the trend of contact edges
Erosion, improves the electric life and interrupting performance of breaker, it is ensured that the reliability of breaker entirety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the invention.
Fig. 2 is the structural schematic diagram of second of embodiment of the invention.
Fig. 3 is the structural schematic diagram of the third embodiment of the invention.
In figure: 1. dynamic guide rods, 11. movable contacts；2. quiet guide rod, 21. stationary contacts, 211. first sides, 212. central planes,
213. second side；3. arc striking piece.
Specific embodiment
A specific embodiment of the invention is described in detail with reference to the accompanying drawing, but is not to skill to the description of embodiment
The limitation of art scheme, any design according to the present invention, which changes in the form rather than substance, all should be considered as protection model of the invention
It encloses.
FIG. 1 to FIG. 3 is please referred to, the present invention relates to a kind of contact structures of breaker, comprising: a dynamic guide rod 1 is fixed thereon
There is movable contact 11；One quiet guide rod 2, is fixed with stationary contact 21 thereon；One is installed on the arc striking piece 3 on quiet guide rod 2, the stationary contact
21 generally rectangular shapes of point, which is removing outside a side far from arc striking piece 3, at least one in excess-three side
The height of side is higher than the height at 21 center of stationary contact.Specifically, the height at 21 center of stationary contact is stationary contact 21
Central plane 212 height, the height of 21 side of stationary contact includes the stationary contact 21 close to 3 side of arc striking piece
First side 211 height and two second sides 213 perpendicular to the first side 211 height, stationary contact 21
Side height be higher than stationary contact 21 central plane 212 height size be 2~3mm, to be conducive to electric arc from touching
Dot center is transferred to contact edges, avoids a large amount of ablations in contact center and influences the on-off of breaker.
The first embodiment, as shown in Figure 1, the stationary contact 21 is removing outside a side far from arc striking piece 3,
The height of remaining first side 211 and second side 213 is above the height of the central plane 212 of stationary contact 21.
Second of embodiment, as shown in Fig. 2, the height of two second sides 213 perpendicular to the first side 211
Higher than the height of the central plane 212 of stationary contact 21.
The third embodiment, as shown in figure 3, height of the stationary contact 21 close to the first side 211 of 3 side of arc striking piece
Degree is higher than the height of the central plane 212 of stationary contact 21.
Claims (4)
1. a kind of contact structure of breaker, comprising: a dynamic guide rod (1) is fixed with movable contact (11) thereon；One quiet guide rod (2),
It is fixed with stationary contact (21) thereon；One is installed on the arc striking piece (3) on quiet guide rod (2), it is characterised in that: the stationary contact
(21) generally rectangular shape, the stationary contact (21) are removing outside a side far from arc striking piece (3), in excess-three side at least
There is the height of a side to be higher than the height at stationary contact (21) center.
2. a kind of contact structure of breaker according to claim 1, it is characterised in that the stationary contact (21) is close
The height of the first side (211) of arc striking piece (3) side is higher than the height at stationary contact (21) center.
3. a kind of contact structure of breaker according to claim 2, it is characterised in that perpendicular to the first side
(211) height of two second sides (213) is higher than the height at stationary contact (21) center.
4. a kind of contact structure of breaker according to claim 2 or 3, it is characterised in that the first side
(211) and the height of second side (213) be higher than stationary contact (21) center height size be 2~3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018838.6A CN109494133A (en) | 2019-01-09 | 2019-01-09 | A kind of contact structure of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910018838.6A CN109494133A (en) | 2019-01-09 | 2019-01-09 | A kind of contact structure of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109494133A true CN109494133A (en) | 2019-03-19 |
Family
ID=65714284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910018838.6A Pending CN109494133A (en) | 2019-01-09 | 2019-01-09 | A kind of contact structure of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494133A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140323A (en) * | 1995-04-20 | 1997-01-15 | 株式会社日立制作所 | Disconnecting switch |
| CN102044388A (en) * | 2011-01-14 | 2011-05-04 | 江苏辉能电气有限公司 | Static contact structure of moulded case circuit breaker |
| CN102427006A (en) * | 2011-11-08 | 2012-04-25 | 江苏辉能电气有限公司 | Contact structure for low-current molded case low-voltage circuit breaker |
| WO2015089902A1 (en) * | 2013-12-18 | 2015-06-25 | 北海市深蓝科技发展有限责任公司 | Micro-jitter electromagnetic relay |
| CN106876225A (en) * | 2017-04-20 | 2017-06-20 | 德力西电气有限公司 | A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device |
| CN206312854U (en) * | 2017-01-06 | 2017-07-07 | 常熟开关制造有限公司(原常熟开关厂） | The contact apparatus of breaker |
| CN207587553U (en) * | 2017-12-28 | 2018-07-06 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact system of switch |
| CN208240528U (en) * | 2018-04-19 | 2018-12-14 | 施耐德电气工业公司 | Static contact component and corresponding switch contact |
| CN209071254U (en) * | 2019-01-09 | 2019-07-05 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact structure of breaker |
-
2019
- 2019-01-09 CN CN201910018838.6A patent/CN109494133A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140323A (en) * | 1995-04-20 | 1997-01-15 | 株式会社日立制作所 | Disconnecting switch |
| CN102044388A (en) * | 2011-01-14 | 2011-05-04 | 江苏辉能电气有限公司 | Static contact structure of moulded case circuit breaker |
| CN102427006A (en) * | 2011-11-08 | 2012-04-25 | 江苏辉能电气有限公司 | Contact structure for low-current molded case low-voltage circuit breaker |
| WO2015089902A1 (en) * | 2013-12-18 | 2015-06-25 | 北海市深蓝科技发展有限责任公司 | Micro-jitter electromagnetic relay |
| CN206312854U (en) * | 2017-01-06 | 2017-07-07 | 常熟开关制造有限公司(原常熟开关厂） | The contact apparatus of breaker |
| CN106876225A (en) * | 2017-04-20 | 2017-06-20 | 德力西电气有限公司 | A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device |
| CN207587553U (en) * | 2017-12-28 | 2018-07-06 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact system of switch |
| CN208240528U (en) * | 2018-04-19 | 2018-12-14 | 施耐德电气工业公司 | Static contact component and corresponding switch contact |
| CN209071254U (en) * | 2019-01-09 | 2019-07-05 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact structure of breaker |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |