CN103715027B - A kind of low-voltage circuit breaker - Google Patents
A kind of low-voltage circuit breaker Download PDFInfo
- Publication number
- CN103715027B CN103715027B CN201310733644.7A CN201310733644A CN103715027B CN 103715027 B CN103715027 B CN 103715027B CN 201310733644 A CN201310733644 A CN 201310733644A CN 103715027 B CN103715027 B CN 103715027B
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- housing
- rotating shaft
- baffle
- operating mechanism
- opening
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Abstract
A kind of low-voltage circuit breaker, belongs to low voltage electrical apparatus technology field.Comprise housing, be arranged on the operating mechanism on housing, be arranged on the rotating shaft in housing and fixed contact, cavity is offered in rotating shaft, moving contact is established in cavity, moving contact stretches out from cavity and coordinates with fixed contact, housing establishes opening, the connecting rod of operating mechanism by opening and rotating shaft hinged, feature: set up first at opening part, second baffle, first baffle plate is fire retardant insulating plate, be wrapped on the outer surface of rotating shaft, and be embedded in the slit between housing and rotating shaft, its one end extends to moving contact direction, the other end establishes passing hole, the top of second baffle is fixed on housing on the face of operating mechanism side, bottom to be plugged in slit and to push down the first baffle plate.Owing to having additional dismounting facility, safe and reliable baffle arrangement on the body of low-voltage circuit breaker, blocked the ejection of a part of air-flow and particulate matter by this baffle arrangement, avoid operating mechanism to lose efficacy due to entering of particulate matter.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology field, be specifically related to a kind of low-voltage circuit breaker with safety screen.
Background technology
Low-voltage circuit breaker is that one not only can be connected and disjunction normal duty electric current, the device for switching of all right disjunction short circuit current.Existing low-voltage circuit breaker, when circuit breaker disjunction, a large amount of air-flows can be produced at circuit breaker internal, these air-flows can spray from the cavity of housing, and be also mingled with particulate matter along with the ejection of air-flow, if these particulate matters enter in the operating mechanism of circuit breaker, operating mechanism can be caused to move dumb or be directly stuck, operating mechanism was lost efficacy.
Summary of the invention
The object of the invention is to provide a kind of structure simple, easy for installation, effectively can stop that the particulate matter of ejection enters the low-voltage circuit breaker in operating mechanism.
The object of the invention is to reach like this, a kind of low-voltage circuit breaker, comprise housing, be arranged on the operating mechanism on housing, be arranged on the rotating shaft in housing and fixed contact, described rotating shaft offers cavity, moving contact is provided with in cavity, described moving contact stretches out from cavity and coordinates with described fixed contact, described housing offers an opening, the connecting rod of described operating mechanism by opening and rotating shaft hinged, be characterized in: have additional one first baffle plate and a second baffle at opening part, the first described baffle plate is fire retardant insulating plate, be wrapped on the outer surface of rotating shaft, and be embedded in the slit formed between housing and rotating shaft, its one end extends to moving contact direction, the other end is provided with the passing hole supplying the connecting rod of described operating mechanism to pass through, one end of described second baffle is fixed on described housing on the face of operating mechanism side, the other end of described second baffle to be plugged in described slit and to push down the first described baffle plate, thus the opening described in covering, the inside of operating mechanism is entered to prevent molten metal particles in arc extinguishing process from being sprayed by opening.
In a specific embodiment of the present invention, the bottom of described second baffle is arc-shaped, and there is pectination open slot, this pectination open slot is corresponding with described opening, pass for described connecting rod, the arc-shaped of bottom and the outer surface of rotating shaft match, and this second baffle is coated on the first described baffle plate, to insert bottom pectination in described slit and to be affixed tactile with the inwall of housing, preventing the first described baffle plate from coming off from slit.
The present invention is due to after employing said structure, the beneficial effect had: owing to having additional dismounting facility, safe and reliable baffle arrangement on the body of low-voltage circuit breaker, blocked the ejection of a part of air-flow and particulate matter by this baffle arrangement, avoid entering inner and its operating characteristics influenced of operating mechanism due to particulate matter.
Accompanying drawing explanation
Fig. 1 is a stereochemical structure sketch of the present invention.
Fig. 2 is another stereochemical structure sketch of the present invention.
Fig. 3 is a planar structure schematic diagram of the present invention.
Fig. 4 is another planar structure schematic diagram of the present invention.
Fig. 5 is the structural representation of the first baffle plate of the present invention.
Fig. 6 is the structural representation of second baffle of the present invention.
In figure: 1. housing, 11. openings, 12. container cavities, 13. slits; 2. fixed contact; 3. rotating shaft, 31. cavitys, 32. moving contacts, 33. open slots; 4. the first baffle plate, 41. passing hole; 5. second baffle, 51. bottoms, 511. pectination open slots; 6. operating mechanism, 61. connecting rods.
Embodiment
technical spirit of the present invention and beneficial effect can be fully understood in order to make the public; applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the present invention's design all should be considered as protection scope of the present invention.
Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and composition graphs 5 and Fig. 6, the present invention relates to a kind of low-voltage circuit breaker, comprise housing 1, fixed contact 2, rotating shaft 3, first baffle plate 4, second baffle 5 and operating mechanism 6, described housing 1 has container cavity 12, and described fixed contact 2 is fixedly installed in container cavity 12, described rotating shaft 3 is rotated and is arranged in container cavity 12, and described rotating shaft 3 is offering cavity 31 corresponding to fixed contact 2 side, and in the cavity 31 of rotating shaft 3, be provided with moving contact 32, described moving contact 32 stretches out from cavity 31 and coordinates with described fixed contact 2, described operating mechanism 6 to be fixedly mounted on housing 1 and to be positioned at outside container cavity 12, described housing 1 also offers an opening 11 and communicates with described container cavity 12, and the connecting rod 61 of described operating mechanism 6 is hinged with the rotating shaft 3 in container cavity 12 by opening 11, the first described baffle plate 4 and second baffle 5 are arranged on described opening 11 place, the first described baffle plate 4 is a fire retardant insulating plate, main body is arc surfaced, be wrapped on the outer surface of rotating shaft 3 body, and be embedded in the slit 13 that housing 1 and rotating shaft 3 formed, wherein: one end of the first baffle plate 4 extends to moving contact 32 direction, the other end is provided with the passing hole 41 supplying the connecting rod 61 of described operating mechanism 6 to pass through, described passing hole 41 is corresponding with the open slot 33 in rotating shaft 3, connecting rod 61 in operating mechanism 6 passes rear hinged with rotating shaft 3 from the passing hole 41 and open slot 33 of the first baffle plate 4, the top of described second baffle 5 is screwed and on the face of operating mechanism 6 side, is positioned at that described container cavity 12 is outer, the other end is plugged in described slit 13 and pushes down the first described baffle plate 4 at housing 1, thus the opening 11 described in covering, enter the inside of operating mechanism 6 to prevent molten metal particles in arc extinguishing process from being sprayed by opening 11.
The bottom 51 of described second baffle 5 is in arc-shaped, and there is pectination open slot 511, this pectination open slot 511 is corresponding with described opening 11, thus dodge described connecting rod 61, the bottom 51 of arc-shaped matches with the outer surface of rotating shaft 3, bottom 51 is coated and push down on the other end of described first baffle plate 4, is plugged in described slit 13 simultaneously and is affixed tactile with the inwall of described housing 1, can effectively prevent the first described baffle plate 4 from coming off from slit 13.
At circuit breaker breaking current, namely described moving contact 32 is with described fixed contact 2 separation process, circuit breaker internal produces a large amount of air-flows, can spray from the cavity 31 of rotating shaft 3, along with some particulate matters in addition of ejection, first baffle plate 4 and second baffle 5 not only can stop the ejection of a part of air-flow, can stop the particulate matter be ejected simultaneously, avoid the particulate matter sprayed to enter in operating mechanism 6.Thus solve problem to be solved by this invention.
Claims (2)
1.
a kind of low-voltage circuit breaker, comprise housing (1), be arranged on the operating mechanism (6) on housing (1), be arranged on the rotating shaft (3) in housing (1) and fixed contact (2), described rotating shaft (3) offers cavity (31), moving contact (32) is provided with in cavity (31), described moving contact (32) stretches out from cavity (31) and coordinates with described fixed contact (2), described housing (1) offers an opening (11), the connecting rod (61) of described operating mechanism (6) is hinged by opening (11) and rotating shaft (3), it is characterized in that: have additional one first baffle plate (4) and a second baffle (5) at opening (11) place, described the first baffle plate (4) is fire retardant insulating plate, be wrapped on the outer surface of rotating shaft (3), and be embedded in the slit (13) formed between housing (1) and rotating shaft (3), its one end extends to moving contact (32) direction, the other end is provided with the passing hole (41) supplying the connecting rod (61) of described operating mechanism (6) to pass through, one end of described second baffle (5) is fixed on described housing (1) on the face of operating mechanism (6) side, the other end of described second baffle (5) to be plugged in described slit (13) and to push down described the first baffle plate (4), thus the opening (11) described in covering, the inside of operating mechanism (6) is entered to prevent molten metal particles in arc extinguishing process from being sprayed by opening (11).
2.
a kind of low-voltage circuit breaker according to claim 1, it is characterized in that the bottom (51) of described second baffle (5) is in arc-shaped, and there is pectination open slot (511), this pectination open slot (511) is corresponding with described opening (11), pass for described connecting rod (61), the arc-shaped of bottom (51) and the outer surface of rotating shaft (3) match, this second baffle (5) is coated on described the first baffle plate (4), to insert bottom pectination in described slit (13) and to be affixed tactile with the inwall of housing (1), prevent described the first baffle plate (4) from coming off from slit (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733644.7A CN103715027B (en) | 2013-12-27 | 2013-12-27 | A kind of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733644.7A CN103715027B (en) | 2013-12-27 | 2013-12-27 | A kind of low-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103715027A CN103715027A (en) | 2014-04-09 |
| CN103715027B true CN103715027B (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733644.7A Active CN103715027B (en) | 2013-12-27 | 2013-12-27 | A kind of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN103715027B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180114763A (en) | 2017-04-11 | 2018-10-19 | 엘에스산전 주식회사 | Arc gas venting structure of air circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4959514A (en) * | 1989-09-11 | 1990-09-25 | General Electric Company | Fusible electric switch |
| CN102243943A (en) * | 2010-05-13 | 2011-11-16 | 上海华联低压电器有限公司 | Falling-prevention contact mechanism of low-voltage circuit breaker |
| CN203071023U (en) * | 2012-12-28 | 2013-07-17 | 常熟开关制造有限公司(原常熟开关厂） | Contact device of circuit breaker |
| CN203644681U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Low voltage circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2985081B1 (en) * | 2011-12-21 | 2015-03-06 | Alstom Technology Ltd | DEVICE FOR PROTECTION AGAINST PARTICLES GENERATED BY AN ELECTRIC SWITCHING ARC |
-
2013
- 2013-12-27 CN CN201310733644.7A patent/CN103715027B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4959514A (en) * | 1989-09-11 | 1990-09-25 | General Electric Company | Fusible electric switch |
| CN102243943A (en) * | 2010-05-13 | 2011-11-16 | 上海华联低压电器有限公司 | Falling-prevention contact mechanism of low-voltage circuit breaker |
| CN203071023U (en) * | 2012-12-28 | 2013-07-17 | 常熟开关制造有限公司(原常熟开关厂） | Contact device of circuit breaker |
| CN203644681U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Low voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103715027A (en) | 2014-04-09 |
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