CN107293460B - Circuit breaker arc isolation structure - Google Patents
Circuit breaker arc isolation structure Download PDFInfo
- Publication number
- CN107293460B CN107293460B CN201610224649.0A CN201610224649A CN107293460B CN 107293460 B CN107293460 B CN 107293460B CN 201610224649 A CN201610224649 A CN 201610224649A CN 107293460 B CN107293460 B CN 107293460B
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- CN
- China
- Prior art keywords
- baffle
- arc
- transmission mechanism
- handle
- magnet yoke
- 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.)
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- 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
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- 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
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Abstract
A breaker arc isolation structure comprises a shell (1), a magnet yoke (2), a transmission mechanism (3), a handle (4) and the transmission mechanism (3) are linked, the magnet yoke (2) is arranged in an inner cavity of the shell (1) and is positioned below the handle (4), and the breaker arc isolation structure is characterized in that a baffle (6) is arranged on the inner side wall of the shell (1) on the side edge of the magnet yoke (2), the baffle (6) and the magnet yoke (2) are combined to separate a breaker arc generation area from a handle (4) installation area, a protrusion (5) is arranged on the transmission mechanism (3), the protrusion (5) is positioned above the baffle (6), and can block arcs overflowing from a gap between the baffle (6) and the transmission mechanism (3); the invention utilizes the magnetic yoke in the existing electromagnetic system to match with the baffle structure, prevents the electric arc from overflowing from the handle end of the breaker, and ensures the safety of the breaker in use.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to an arc isolation structure of a circuit breaker, which can prevent an arc from overflowing from a handle end of the circuit breaker.
Background
At present, manual opening and closing of a miniature circuit breaker are basically realized in a manual operation mode through a handle, when the circuit breaker has fault current, electric arcs can be generated between a movable contact and a fixed contact at the moment that the movable contact and the fixed contact are opened, and most of electric arcs can be led to an arc extinguish chamber through an arc striking angle to extinguish. However, a small portion of the arc sometimes escapes in the opposite direction from the gap between the handle and the housing and is ejected. On one hand, the leaked and sprayed electric arc can burn and blacken the handle, and further influences the operation performance and reliability; on the other hand, potential safety hazards may be brought to electrical equipment or operators, so that the electrical equipment is damaged or the bodies of the operators are injured. At present, most of miniature circuit breakers have no corresponding protection measures for electric arcs leaked and sprayed out from gaps of a shell, even if the miniature circuit breakers are individually provided, the miniature circuit breakers are protected by combining a part of actuating mechanisms in the shell, gaps are formed in the middle of the miniature circuit breakers and are not closed, partial electric arcs can be sprayed out, and real isolation and protection effects cannot be achieved.
Chinese patent 201010246950.4 discloses an electric arc isolating device of miniature circuit breaker, including casing, casing inner chamber, the casing inner chamber includes first, second region, and in the first region was located to the handle, actuating mechanism located in the second region, handle, actuating mechanism are connected with the casing through the pivot respectively, handle and actuating mechanism linkage, the inner chamber still is equipped with the third region adjacent with first region, and in this region was located to magnetic system and contact, was equipped with first baffle between first, third region, and this baffle both ends are connected with casing both sides wall, and first region is closed area. Compared with the prior art, the invention has positive and obvious effect. This technique adopts insulating barrier in miniature circuit breaker's casing, adopts the height and the protection rail that the confined baffle formed blocks electric arc, has solved among the prior art and has not had the arc separation measure or only has partly gapped arc separation and still can not block electric arc and leak the technical problem of blowout from the handle.
Chinese patent 201010246945.2 discloses a double-deck electric arc isolating device of miniature circuit breaker, which comprises a handle, a housing, be equipped with electromagnetic mechanism and actuating mechanism in the casing, the one end of handle stretches into in the casing and is connected with the casing through a handle post, actuating mechanism is connected with the casing through a round pin axle, the handle is connected with actuating mechanism, be equipped with an outer baffle and an inlayer baffle on the casing, inlayer baffle is with electromagnetic mechanism and handle, actuating mechanism separates, outer baffle is connected with inlayer baffle one end, the handle is located the outside of outer baffle, actuating mechanism is located the inboard of outer baffle, be equipped with the breach on the outer baffle, be equipped with an arch on the actuating mechanism, the breach is relative with the arch. This double-deck electric arc isolating device of miniature circuit breaker blocks twice through inlayer baffle, outer baffle to the electric arc that produces, guarantees product and personnel's safety.
However, the two types of circuit breakers need to avoid gaps generated by matching of the double-layer partition plates by utilizing dislocation of the double-layer partition plates, so that the mounting difficulty is increased, and the cost of the circuit breaker product is increased.
Disclosure of Invention
The invention aims to overcome the technical defect that the existing arc isolation device needs to be provided with a central partition plate to prevent poor leakage effect, and provides an arc isolation structure of a circuit breaker.
Technical scheme
In order to achieve the technical purpose, the invention designs an arc isolation structure of a circuit breaker, which comprises a shell, a magnet yoke, a transmission mechanism, a handle and the transmission mechanism which are linked, wherein the magnet yoke is arranged in the inner cavity of the shell and positioned below the handle;
the housing includes a base and an upper cover.
Further, the baffle comprises a base baffle and an upper cover baffle, the base baffle comprises a left baffle and a right baffle, the left baffle comprises a left straight part and a left arc part, the right baffle comprises a right straight part, a right arc part and a right curve part, the magnet yoke is positioned between the left straight part and the right straight part and tightly attached to the inner surface of the base, and the outer surface of the magnet yoke corresponds to and is tightly attached to the left straight part, the left arc part and the right straight part in shape;
the upper cover baffle comprises an upper baffle part, two ends of the upper baffle part are arc-shaped, an upper cover curved part is arranged at one end of the upper baffle part, which is positioned on the transmission mechanism, and the upper surface of the magnetic yoke is tightly attached to the inner surface of the upper baffle part;
a moving contact mounting seat of the transmission mechanism is provided with a bulge, and the bulge is positioned at a corresponding position of a gap between the baffle above the baffle and the transmission mechanism.
Advantageous effects
The invention provides an arc isolation structure of a circuit breaker, which prevents an arc from overflowing from a handle end of the circuit breaker by utilizing a magnetic yoke matched baffle structure in the existing electromagnetic system, and ensures the use safety of the circuit breaker.
Drawings
FIG. 1 is a schematic view of a structure of a mounting baffle and a protrusion on a base according to an embodiment of the invention.
FIG. 2 is a schematic view of an assembly structure of a baffle and a magnetic yoke on a base according to an embodiment of the invention.
Fig. 3 is a schematic view of an assembly structure of a baffle plate and a magnetic yoke on an upper cover according to an embodiment of the invention.
FIG. 4 is a schematic view of a mounting structure of a baffle on a base according to an embodiment of the present invention.
Fig. 5 is a schematic view of a structure for mounting a baffle on an upper cover according to an embodiment of the present invention.
Fig. 6 is a schematic view of a bump mounting structure according to an embodiment of the present invention.
Detailed Description
The invention is further explained below with reference to the figures and examples.
Examples
As shown in figure 1, the circuit breaker arc isolation structure comprises a shell 1, a magnet yoke 2, a transmission mechanism 3, a handle 4 and the transmission mechanism 5 which are linked, wherein the magnet yoke 2 is arranged in the inner cavity of the shell 1 and is positioned below the handle 4, and is characterized in that a baffle 6 is arranged on the inner side wall of the shell 1 on the side edge of the magnet yoke 2, the baffle 6 and the magnet yoke 2 are combined to separate a circuit breaker arc generation area from a handle 4 installation area, a protrusion 5 is arranged on the transmission mechanism 3, and the protrusion 5 is positioned above the baffle 6 and can block the arc overflowing from a gap between the baffle 6 and the transmission mechanism 3;
the housing 1 includes a base 101 and an upper cover 102.
As shown in fig. 2 and 4, the baffle 6 comprises a base baffle 601 and an upper cover baffle 602, the base baffle 601 comprises a left baffle 601a and a right baffle 601b, the left baffle 601a comprises a left straight portion 601a01 and a left arc portion 601a02, the right baffle 601b comprises a right straight portion 601b01, a right arc portion 601b02 and a right arc portion 601b03, the yoke 2 is positioned between the left straight portion 601a01 and the right straight portion 601b01 and clings to the inner surface of the base 101, and the outer surface of the yoke 2 corresponds to and clings to the outer shapes of the left straight portion 601a01, the left arc portion 601a02, the right straight portion 601b01 and the right arc portion 601b 02;
as shown in fig. 3 and 5, the upper cover baffle 602 includes an upper blocking portion 602a, two ends of the upper blocking portion 602a are arc-shaped, an upper cover curved portion 602b is disposed at one end of the upper blocking portion 602a located at the transmission mechanism 3, and an upper surface of the magnetic yoke 2 abuts against an inner surface of the upper blocking portion 602 a;
as shown in fig. 6, a movable contact mounting seat of the transmission mechanism 3 is provided with a protrusion 5, and the protrusion 5 is located at a position corresponding to a gap between the baffle 6 above the baffle 6 and the transmission mechanism 3.
In the embodiment, the magnetic yoke 2 is matched with the baffle 6, so that most of reverse electric arcs are prevented; however, due to the clearance between the shield 6 and the actuator 3, a very small portion of the arc may be ejected from the clearance, which is blocked by the projection 5 on the actuator 3 before it enters the front region of the handle, thus preventing the arc from reaching the handle 4.
The structure, ratio, size and the like shown in the drawings of the present embodiment are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the limit conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle", "clockwise" and "counterclockwise" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the substantial changes, but also considered to be the scope of the present invention.
Claims (1)
1. A breaker arc isolation structure comprises a shell (1), a magnet yoke (2), a transmission mechanism (3), a handle (4) and the transmission mechanism (3) are linked, the magnet yoke (2) is arranged in an inner cavity of the shell (1) and is positioned below the handle (4), and the breaker arc isolation structure is characterized in that a baffle (6) is arranged on the inner side wall of the shell (1) on the side edge of the magnet yoke (2), the baffle (6) and the magnet yoke (2) are combined to separate a breaker arc generation area from a handle (4) installation area, a protrusion (5) is arranged on the transmission mechanism (3), the protrusion (5) is positioned above the baffle (6), and can block arcs overflowing from a gap between the baffle (6) and the transmission mechanism (3);
the housing (1) comprises a base (101) and an upper cover (102);
the baffle (6) comprises a base baffle (601) and an upper cover baffle (602), the base baffle (601) comprises a left baffle (601a) and a right baffle (601b), the left baffle (601a) comprises a left straight part (601a01) and a left arc part (601a02), the right baffle (601b) comprises a right straight part (601b01), a right arc part (601b02) and a right curve part (601b03), the magnet yoke (2) is positioned between the left straight part (601a01) and the right straight part (601b01) and tightly clings to the inner surface of the base (101), the outer surface of the magnet yoke (2) corresponds to and clings to the outer shape of the left straight part (601a01), the left arc part (601a02), the right straight part (601b01), and the right arc part (601b 02);
the upper cover baffle (602) comprises an upper blocking part (602a), two ends of the upper blocking part (602a) are arc-shaped, an upper cover curved part (602b) is arranged at one end of the upper blocking part (602a) positioned on the transmission mechanism (3), and the upper surface of the magnetic yoke (2) is tightly attached to the inner surface of the upper blocking part (602 a);
a moving contact mounting seat of the transmission mechanism (3) is provided with a protrusion (5), and the protrusion (5) is positioned at a corresponding position of a gap between the baffle (6) above the baffle (6) and the transmission mechanism (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224649.0A CN107293460B (en) | 2016-04-12 | 2016-04-12 | Circuit breaker arc isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224649.0A CN107293460B (en) | 2016-04-12 | 2016-04-12 | Circuit breaker arc isolation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107293460A CN107293460A (en) | 2017-10-24 |
| CN107293460B true CN107293460B (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224649.0A Active CN107293460B (en) | 2016-04-12 | 2016-04-12 | Circuit breaker arc isolation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107293460B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3561831B1 (en) * | 2018-04-24 | 2022-10-26 | ABB Schweiz AG | An electrical switch |
| CN114420495B (en) * | 2022-03-29 | 2022-07-01 | 深圳市脉联电子有限公司 | Arc isolation dustproof structure and circuit breaker |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916695A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Double-layer electric arc isolation device of miniature circuit breaker |
| CN101916696A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Electric arc isolating device of miniature circuit breaker |
| CN202443927U (en) * | 2012-01-20 | 2012-09-19 | 乐清市国隆电气有限公司 | Small circuit breaker |
| CN202549755U (en) * | 2012-04-01 | 2012-11-21 | 上海永继电气股份有限公司 | Arc extinguishing system for plastic shell breaker with arc regurgitating preventing function |
| CN204792653U (en) * | 2015-08-19 | 2015-11-18 | 合兴集团有限公司 | Circuit breaker electromagnetism dropout system |
| JP2015225721A (en) * | 2014-05-26 | 2015-12-14 | パナソニックＩｐマネジメント株式会社 | Circuit breaker, electronic connection connector using the same and power control system |
| CN205564689U (en) * | 2016-04-12 | 2016-09-07 | 上海良信电器股份有限公司 | Circuit breaker electric arc isolation structure |
-
2016
- 2016-04-12 CN CN201610224649.0A patent/CN107293460B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916695A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Double-layer electric arc isolation device of miniature circuit breaker |
| CN101916696A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Electric arc isolating device of miniature circuit breaker |
| CN202443927U (en) * | 2012-01-20 | 2012-09-19 | 乐清市国隆电气有限公司 | Small circuit breaker |
| CN202549755U (en) * | 2012-04-01 | 2012-11-21 | 上海永继电气股份有限公司 | Arc extinguishing system for plastic shell breaker with arc regurgitating preventing function |
| JP2015225721A (en) * | 2014-05-26 | 2015-12-14 | パナソニックＩｐマネジメント株式会社 | Circuit breaker, electronic connection connector using the same and power control system |
| CN204792653U (en) * | 2015-08-19 | 2015-11-18 | 合兴集团有限公司 | Circuit breaker electromagnetism dropout system |
| CN205564689U (en) * | 2016-04-12 | 2016-09-07 | 上海良信电器股份有限公司 | Circuit breaker electric arc isolation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107293460A (en) | 2017-10-24 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230406 Address after: No. 2000, Shenjiang South Road, Pudong New Area, Shanghai, 201315 Patentee after: Shanghai Liangxin Electrical Co.,Ltd. Patentee after: SHANGHAI LIANGXIN SMART ELECTRIC Co.,Ltd. Address before: 200137 Shanghai Pudong New Area Gaohang town Heng'an Road No. 668 Patentee before: Shanghai Liangxin Electrical Co.,Ltd. |
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| TR01 | Transfer of patent right |