CN206685341U - A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device - Google Patents
A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device Download PDFInfo
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- CN206685341U CN206685341U CN201720418093.9U CN201720418093U CN206685341U CN 206685341 U CN206685341 U CN 206685341U CN 201720418093 U CN201720418093 U CN 201720418093U CN 206685341 U CN206685341 U CN 206685341U
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- arc
- static contact
- striking piece
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Abstract
It the utility model is related to a kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device, arc-control device includes pedestal, the static contact being arranged on pedestal, the arc-chutes being arranged on above static contact and the arc-extinguish chamber being adapted with arc-chutes, arc extinguishing grid pieces are provided with arc-chutes, static contact is provided with stationary contact and arc striking piece, the distance between one end and arc extinguishing grid pieces on the arc striking piece at stationary contact are less than the distance between one end and arc extinguishing grid pieces away from stationary contact, electric arc caused by circuit disconnection is introduced in arc-chutes by arc striking piece, and extinguished by arc striking piece and arc extinguishing grid pieces.Compared with prior art, the utility model on static contact by setting the arc striking piece with striking and arc-suppression function, limited space make use of to elongate electric arc, and then electric arc is cooled down and extinguished, striking ability is good, and arc extinguishing speed is fast, significantly improves critical load current and short circuit breaking capacity, and overall structure is simple, processing and maintenance cost are low.
Description
Technical field
The utility model belongs to breaker of plastic casing technical field, is related to a kind of breaker of plastic casing arc-control device and containing the dress
The breaker of plastic casing put.
Background technology
Nowadays, the life of people be unable to do without electric energy, and the various protectors for protection circuit arise at the historic moment.Wherein, plastic housing
Breaker is one of common circuit brake, for circuit overloads short-circuit protection, i.e., when the feelings of short circuit or overload occurs in circuit
During condition, the tripping mechanism automatic shutdown circuit of breaker of plastic casing, the protection to circuit is realized.During circuit is cut off, meeting
Produce substantial amounts of electric arc, the generation of electric arc is along with HTHP, and such as evacuation arc extinguishing easily punctures or burnt plastic housing and breaks not in time
Road device, have a strong impact on the breaking capacity of breaker of plastic casing.Existing arc-control device, which is often difficult to take into account high arc extinction performance and height, to be drawn
Arc ability, the damage of breaker of plastic casing is easily caused because of striking ability, influences service life and Electrical Safety.And some set
Having the breaker of plastic casing of arc striking mechanism, often structure is sufficiently complex, high to the technical requirements of production and processing, and then improves entirety
Cost.
Utility model content
The purpose of this utility model is exactly a kind of simple in construction in order to be provided the defects of overcoming above-mentioned prior art to exist
And the good breaker of plastic casing arc-control device of striking ability and the breaker of plastic casing containing the device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of breaker of plastic casing arc-control device, the arc-control device include pedestal, the static contact being arranged on pedestal, are arranged on
Arc-chutes above static contact and the arc-extinguish chamber being adapted with arc-chutes, arc extinguishing grid pieces are provided with described arc-chutes, it is described
Static contact be provided with stationary contact and arc striking piece, the distance between one end and arc extinguishing grid pieces on the arc striking piece at stationary contact
Less than the distance between one end away from stationary contact and arc extinguishing grid pieces, electric arc caused by circuit disconnection introduces arc extinguishing by arc striking piece
Interior, and extinguished by arc striking piece and arc extinguishing grid pieces.Electric arc can be limited in arc-chutes by arc-extinguish chamber, prevent electric arc four dissipates from overflowing
Go out.Into the electric arc in arc-chutes some segments, the upper and lower ends of nethermost one section of electric arc are divided into by multiple arc extinguishing grid pieces
Contacted respectively with arc extinguishing grid pieces and arc striking piece, due to the distance between arc striking piece and arc extinguishing grid pieces with electric arc moving direction not
Disconnected increase, makes electric arc constantly be elongated, it is easier to extinguish electric arc.
Described stationary contact and arc striking piece are fixedly connected by welding manner with static contact.Stationary contact is quiet silver point.
The moving contact being hinged with pedestal is additionally provided with described pedestal, the moving contact is provided with what is be adapted with static contact
Movable contact.Moving contact can around pin joint in perpendicular reciprocating rotation, when moving contact rotates and makes movable contact and stationary contact
During separation, i.e., circuit goes off state by closure state, electric arc can be produced between movable contact and stationary contact, electric arc is by arc striking piece
Introducing arc-chutes are interior and cut and cool down.
Described static contact includes the static contact installation portion being fixedly linked with pedestal, the stationary contact being arranged on below arc extinguishing grid pieces
Head supporting part and the static contact transition part that is arranged between static contact installation portion and static contact supporting part, described stationary contact and
Arc striking piece is arranged on static contact supporting part.It is fixedly connected between static contact installation portion and pedestal by screw, by stationary contact
Head is arranged on pedestal.Static contact supporting part can be designed to required shape and size according to the actual requirements, and static contact transition part is used
In connection static contact installation portion and static contact supporting part.
Described static contact supporting part includes vertical plate and the first level being connected respectively with the upper and lower ends of vertical plate
Plate, the second level board, described stationary contact and arc striking piece are arranged on first level plate, described static contact transition part and
Two level boards are connected.According to the actual requirements, adjust the height of vertical plate, that is, adjust between stationary contact and the second level board away from
From, and then change opening away from meeting different requirements between moving contact and static contact.
The moving contact resigning mouthful being adapted with moving contact is offered on described static contact supporting part, the moving contact resigning mouthful
Positioned at the middle part of static contact supporting part.Moving contact resigning mouthful can provide the space that moving contact moves downward, make movable contact with it is quiet
It can be completely attached between contact, avoid static contact from producing stop to moving contact.
The sealing support cover being adapted with moving contact resigning mouthful is additionally provided with described static contact.The sealing support cover can
It is enough that moving contact resigning mouthful is sealed, prevent electric arc from being overflowed through moving contact resigning mouthful, while first level plate can be supported, prevent
Only first level plate benging deforms.
The material of described static contact is copper.It is due to copper softer, in order to prevent deforming in use, set close
Support cover is sealed, sizing is supported to static contact.
Described sealing support cover includes being arranged on the second level board and supporting plate and difference on static contact transition part
The first sealing plate, the second sealing plate, the 3rd sealing plate being arranged vertically in supporting plate, the first described sealing plate and
Second sealing plate is respectively positioned between first level plate and the second level board.First sealing plate, the second sealing plate, the 3rd sealing plate,
First level plate and the second level board are surrounded together, and electric arc is obstructed, and prevent electric arc from being overflowed through moving contact resigning mouthful.First
Sealing plate and the second sealing plate play a part of supporting first level plate simultaneously, prevent the bending deformation of first level plate.
The 3rd described sealing plate is provided with the postive stop baffle being adapted with the end of first level plate.In installation sealing branch
During support cover, sealing support cover is put into static contact supporting part through static contact transition part, when postive stop baffle and first level plate
During ends contact, show to be installed in place.
Arc striking piece striking portion that described arc striking piece includes being arranged on first level plate, it is connected with arc striking piece striking portion
Arc striking piece transition part and it is connected with arc striking piece transition part and the arc striking piece arc extinguishing portion above the second level board, the arc striking piece
The distance between arc extinguishing portion and the second level board are less than the distance between arc striking piece striking portion and the second level board.Electric arc is by striking
Piece striking portion is introduced in arc-chutes, and in arc extinguishing grid pieces with being off under the collective effect in arc striking piece arc extinguishing portion.When electric arc is by drawing
When arcs striking portion gradually moves to arc striking piece arc extinguishing portion, constantly elongated, and then quick extinguishing.
A kind of breaker of plastic casing containing described arc-control device.
Operation principle of the present utility model is as follows：
When circuit goes off state by closure state, electric arc is produced between movable contact and stationary contact, electric arc is by striking
Piece is introduced in arc-chutes, and is divided into some segments by multiple arc extinguishing grid pieces, with electric arc from arc striking piece striking portion gradually to drawing
The motion in arcs arc extinguishing portion, electric arc are constantly elongated, and then are quickly extinguished.
Compared with prior art, the utility model has the characteristics that：
1) by setting arc striking piece on static contact, caused electric arc is successfully introduced in arc-chutes and by arc extinguishing grid pieces
Cutting, simultaneously because the distance between arc striking piece and arc extinguishing grid pieces gradually increase with the movement of electric arc, make electric arc continuous
Elongating, and then cool down and extinguish, arc striking piece has the function of striking and arc extinguishing simultaneously, make use of limited space to elongate electric arc,
The low current quenching time of product is set to reach below 100ms, striking ability is good, and arc extinguishing speed is fast；
2) overall structure is simple, reduces requirement and processing cost of the device to process technology, and be easy to repair and change
Parts, service life length；
3) arc quenching characteristic of breaker of plastic casing is improved, its critical load current and short circuit breaking capacity is had significantly
Lifting, ensure that the reliability of switch.
Brief description of the drawings
Fig. 1 is the three-dimensional exploded structural representation of arc-control device in the utility model；
Fig. 2 is the structural representation after mounting of arc-control device in the utility model；
Fig. 3 is the structural representation that moving contact coordinates with static contact in the utility model；
Fig. 4 is the structural representation of static contact in the utility model；
Fig. 5 is the structural representation that support cover is sealed in the utility model；
Fig. 6 is the structural representation of arc striking piece in the utility model；
Fig. 7 is static contact in the utility model, sealing support cover and the structural representation of arc striking piece after mounting；
Description of symbols in figure：
1-pedestal, 2-arc-chutes, 201-arc extinguishing grid pieces, 3-static contact, 301-stationary contact, the installation of 302-static contact
Portion, 303-static contact transition part, 304-static contact supporting part, 3041-first level plate, the 3042-the second level board,
3043-vertical plate, 305-moving contact resigning mouthful, 4-arc-extinguish chamber, 5-arc striking piece, 501-arc striking piece striking portion, 502-draw
Arcs transition part, 503-arc striking piece arc extinguishing portion, 6-moving contact, 601-movable contact, 7-sealing support cover, 701-supporting plate,
702-the first sealing plate, the 703-the second sealing plate, the 704-the three sealing plate, 705-postive stop baffle.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
Embodiment：
A kind of breaker of plastic casing, the breaker of plastic casing contain arc-control device as shown in Figure 1 and Figure 2, and the arc-control device includes
Pedestal 1, the static contact 3 being arranged on pedestal 1, the arc-chutes 2 that are arranged on the top of static contact 3 and it is adapted with arc-chutes 2
Arc-extinguish chamber 4, is provided with arc extinguishing grid pieces 201 in arc-chutes 2, and static contact 3 is provided with stationary contact 301 and arc striking piece 5, on the arc striking piece 5
The distance between one end and arc extinguishing grid pieces 201 at stationary contact 301 are less than one end and arc extinguishing grid pieces away from stationary contact 301
The distance between 201, electric arc caused by circuit disconnection is introduced in arc-chutes 2 by arc striking piece 5, and by arc striking piece 5 and arc-chute
Piece 201 extinguishes.
As shown in figure 3, being additionally provided with the moving contact 6 being hinged with pedestal 1 on pedestal 1, the moving contact 6 is provided with and static contact
3 movable contacts 601 being adapted.
As shown in figure 4, static contact 3 include be fixedly linked with pedestal 1 static contact installation portion 302, be arranged on arc extinguishing grid pieces
The static contact supporting part 304 of 201 lower sections and the stationary contact being arranged between static contact installation portion 302 and static contact supporting part 304
Head transition part 303, stationary contact 301 and arc striking piece 5 are arranged on static contact supporting part 304.Static contact supporting part 304 includes perpendicular
Straight panel 3043 and the first level plate 3041 being connected respectively with the upper and lower ends of vertical plate 3043, the second level board 3042, it is quiet
Contact 301 and arc striking piece 5 are arranged on first level plate 3041, and static contact transition part 303 is connected with the second level board 3042.
The moving contact resigning mouthful 305 being adapted with moving contact 6 is offered on static contact supporting part 304, the moving contact resigning mouthful 305 is located at
The middle part of static contact supporting part 304.
The sealing support cover 7 being adapted with moving contact resigning mouthful 305 is additionally provided with static contact 3.As shown in figure 5, sealing branch
Support cover 7 includes the supporting plate 701 being arranged on the second level board 3042 and static contact transition part 303 and difference vertically
The first sealing plate 702, the second sealing plate 703, the 3rd sealing plate 704 being arranged in supporting plate 701, the first sealing plate 702 and
Second sealing plate 703 is respectively positioned between the level board 3042 of first level plate 3041 and second.3rd sealing plate 704 is provided with and the
The postive stop baffle 705 that the end of one level board 3041 is adapted.
As shown in fig. 6, arc striking piece 5 includes arc striking piece striking portion 501 and the arc striking piece being arranged on first level plate 3041
The arc striking piece transition part 502 and be connected with arc striking piece transition part 502 and be located on the second level board 3042 that striking portion 501 is connected
The arc striking piece arc extinguishing portion 503 of side, the distance between the arc striking piece arc extinguishing portion 503 and the second level board 3042 are less than arc striking piece striking
The distance between level board 3042 of portion 501 and second.
The structure of static contact, sealing support cover with arc striking piece after mounting is as shown in Figure 7.
The operation principle of arc-control device is as follows：
When circuit goes off state by closure state, electric arc, electric arc are produced between movable contact 601 and stationary contact 301
Introduced by arc striking piece 5 in arc-chutes 2, and some segments are divided into by multiple arc extinguishing grid pieces 201, as electric arc is by arc striking piece striking
Gradually the motion to arc striking piece arc extinguishing portion 503, electric arc are constantly elongated in portion 501, and then are quickly extinguished.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using practicality
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within the scope of protection of the utility model.
Claims (10)
1. a kind of breaker of plastic casing arc-control device, it is characterised in that the arc-control device includes pedestal (1), is arranged on pedestal (1)
Static contact (3), the arc-chutes (2) being arranged on above static contact (3) and the arc-extinguish chamber (4) being adapted with arc-chutes (2), institute
Arc extinguishing grid pieces (201) are provided with the arc-chutes (2) stated, described static contact (3) is provided with stationary contact (301) and arc striking piece (5),
It is less than on the arc striking piece (5) positioned at the distance between the one end at stationary contact (301) place and arc extinguishing grid pieces (201) away from stationary contact
(301) the distance between one end and arc extinguishing grid pieces (201), circuit disconnect caused by electric arc arc extinguishing is introduced by arc striking piece (5)
In room (2), and extinguished by arc striking piece (5) and arc extinguishing grid pieces (201).
2. a kind of breaker of plastic casing arc-control device according to claim 1, it is characterised in that on described pedestal (1) also
Provided with the moving contact (6) being hinged with pedestal (1), the moving contact (6) is provided with the movable contact being adapted with static contact (3)
(601)。
A kind of 3. breaker of plastic casing arc-control device according to claim 2, it is characterised in that described static contact (3) bag
Include the static contact installation portion (302) being fixedly linked with pedestal (1), the static contact supporting part being arranged on below arc extinguishing grid pieces (201)
(304) and the static contact transition part (303) that is arranged between static contact installation portion (302) and static contact supporting part (304), institute
The stationary contact (301) and arc striking piece (5) stated are arranged on static contact supporting part (304).
A kind of 4. breaker of plastic casing arc-control device according to claim 3, it is characterised in that described static contact supporting part
(304) include vertical plate (3043) and be connected respectively with the upper and lower ends of vertical plate (3043) first level plate (3041),
Second level board (3042), described stationary contact (301) and arc striking piece (5) are arranged on first level plate (3041), described
Static contact transition part (303) be connected with the second level board (3042).
A kind of 5. breaker of plastic casing arc-control device according to claim 4, it is characterised in that described static contact supporting part
(304) the moving contact resigning mouthful (305) being adapted with moving contact (6) is offered on, the moving contact resigning mouthful (305) is located at stationary contact
The middle part of head supporting part (304).
6. a kind of breaker of plastic casing arc-control device according to claim 5, it is characterised in that on described static contact (3)
It is additionally provided with the sealing support cover (7) being adapted with moving contact resigning mouthful (305).
A kind of 7. breaker of plastic casing arc-control device according to claim 6, it is characterised in that described sealing support cover
(7) include being arranged on supporting plate (701) on the second level board (3042) and static contact transition part (303) and respectively along vertical
Direction is arranged on the first sealing plate (702), the second sealing plate (703), the 3rd sealing plate (704) in supporting plate (701), described
The first sealing plate (702) and the second sealing plate (703) be respectively positioned on first level plate (3041) and the second level board (3042) it
Between.
A kind of 8. breaker of plastic casing arc-control device according to claim 7, it is characterised in that the 3rd described sealing plate
(704) it is provided with the postive stop baffle (705) being adapted with the end of first level plate (3041).
A kind of 9. breaker of plastic casing arc-control device according to claim 4, it is characterised in that described arc striking piece (5) bag
Include the arc striking piece striking portion (501) being arranged on first level plate (3041), the arc striking piece being connected with arc striking piece striking portion (501)
Transition part (502) and it is connected with arc striking piece transition part (502) and the arc striking piece arc extinguishing above the second level board (3042)
Portion (503), the distance between the arc striking piece arc extinguishing portion (503) and the second level board (3042) are less than arc striking piece striking portion (501)
The distance between second level board (3042).
A kind of 10. breaker of plastic casing of the arc-control device containing as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418093.9U CN206685341U (en) | 2017-04-20 | 2017-04-20 | A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418093.9U CN206685341U (en) | 2017-04-20 | 2017-04-20 | A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206685341U true CN206685341U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720418093.9U Active CN206685341U (en) | 2017-04-20 | 2017-04-20 | A kind of breaker of plastic casing arc-control device and the breaker of plastic casing containing the device |
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| Country | Link |
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| CN (1) | CN206685341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-04-20 CN CN201720418093.9U patent/CN206685341U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106876225B (en) * | 2017-04-20 | 2019-11-22 | 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 |
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