CN206312857U - A kind of low-voltage circuit breaker - Google Patents
A kind of low-voltage circuit breaker Download PDFInfo
- Publication number
- CN206312857U CN206312857U CN201720017303.3U CN201720017303U CN206312857U CN 206312857 U CN206312857 U CN 206312857U CN 201720017303 U CN201720017303 U CN 201720017303U CN 206312857 U CN206312857 U CN 206312857U
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- static contact
- arc
- circuit breaker
- horizontal edge
- tab
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Abstract
A kind of low-voltage circuit breaker, it is used to close the moving contact and static contact of separated time road including pairing, the static contact includes the static contact panel and the connecting plate of connection external terminal and static contact panel of the external terminal and the setting that takes the shape of the letter U for connecting outside line, static contact panel one end of the U-shaped is provided with stationary contact and is connected with run-on tab, feature：Also include the arc insulating cover being covered on the static contact panel and connecting plate of U-shaped, the arc insulating cover offers notch, and described stationary contact and run-on tab exposes from notch.Arc insulating cover produces gas to cool down electric arc arc root, improves the sealing of lower space, it is therefore prevented that the external terminal part described in metallic vapour pollution escaped in arc-chutes；Divider wall is set up at run-on tab so that the arc current density increase on the area unit area of run-on tab, prevent electric arc from expanding, improve arc voltage.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of low-voltage circuit breaker.
Background technology
Low-pressure plastic shell circuit breaker is opened or closed circuit by operating mechanism, by detecting short circuit or fault current etc.
Abnormal current protects load equipment and circuit so as to cut-off electric current.When the electric current in circuit is in the range of rated current,
Breaker generally remains in the state of connection；And when break down electric current when, control unit detect fault current and to
Switching mechanism sends trip signal, and breaker tripping mechanism is released immediately, and stationary contact is separated from one another with movable contact, so as to cut off
Circuit.
Arc-chutes are an important components of breaker body, and it can suppress and eliminate due to sound contact separation
The electric arc of generation.So, how further to optimize arc quenching chamber structure in limited space, improve the insulation between conductive component
Performance, the closure in enhancing arc extinguishing space is the important topic that current line faces in the industry.
In view of above-mentioned prior art, it is necessary to be subject to rational modification to the structure at static contact in existing breaker.Therefore,
The applicant has made beneficial design, and technical scheme described below is produced under this background.
The content of the invention
The purpose of this utility model is to provide a kind of simple structure, low-voltage circuit breaker easy for installation, can effectively be carried
The sealing in the space of electric arc bottom high, improves arc extinguishing room pressure, improves breaker breaking capacity.
The purpose of this utility model is such to what is reached, a kind of low-voltage circuit breaker, including pairing is for closing separated time road
Moving contact and static contact, the static contact include for connect outside line external terminal and take the shape of the letter U setting static contact panel and
The connecting plate of connection external terminal and static contact panel, static contact panel one end of the U-shaped is provided with stationary contact and is connected with run-on tab, described
Low-voltage circuit breaker also includes the arc insulating cover being covered on the static contact panel and connecting plate of U-shaped, and the arc insulating cover offers notch, described
Stationary contact and run-on tab expose from notch.
In a specific embodiment of the present utility model, the notch run-on tab end both sides have raise and
The divider wall of limitation electric arc diffusion.
In another specific embodiment of the present utility model, described arc insulating cover include cover body, side, L-shaped horizontal edge,
U-shaped horizontal edge, described side has a pair, and an opposite side is arranged on the front and rear both sides sidepiece of cover body, described L-shaped horizontal edge position respectively
In cover body left end and between being connected to an opposite side, the L-shaped horizontal edge is arranged at connecting plate, and described U-shaped horizontal edge is located at cover
The right-hand member of body and it is connected between an opposite side, by cover body, an opposite side and U-shaped horizontal edge enclosure into for accommodating the stationary contact
The accommodating cavity of the static contact panel of the U-shaped of head, described notch is arranged on the cover body above accommodating cavity.
In another specific embodiment of the present utility model, described L-shaped horizontal edge has and is arranged on external terminal
Flange.
In another specific embodiment of the present utility model, there is card base respectively on a described opposite side, it is described
Card base be used to forming card with described static contact and match somebody with somebody.
The utility model employs said structure, compared with prior art, has an advantageous effect in that：When there is short circuit current
By when, moving contact reprimand open, static contact electric arc arc root is contacted along striking angular movement and with arc insulating cover, arc insulating cover produce gas to electricity
Arc arc root is cooled down, and improves the sealing of lower space, it is therefore prevented that described in the metallic vapour pollution escaped in arc-chutes
External terminal part；Simultaneously as setting up divider wall at run-on tab so that the electric arc electricity on the area unit area of run-on tab
Current density increases, and prevents electric arc from expanding, and improves arc voltage.
Brief description of the drawings
Fig. 1 is the structural representation of low-voltage circuit breaker described in the utility model.
Fig. 2 is structural representation of the moving contact described in the utility model with static contact when reprimand is opened.
Fig. 3 is the structural representation of arc insulating cover described in the utility model.
Fig. 4 is the structural representation that static contact described in the utility model coordinates with arc insulating cover.
Fig. 5 is the structural representation of static contact described in the utility model.
In figure：1. moving contact, 11. movable contacts；2. static contact, 21. stationary contacts, 22. external terminals, 23. static contact panels,
24. connecting plates, 25. run-on tabs；3. arc-chutes；4. binding post；5. arc insulating cover, 51. cover bodies, 511. notches, 512. strikings
Groove, 513. divider walls, 52.U shapes horizontal edge, 53.L shapes horizontal edge, 531. flange, 54. accommodating cavities, 55. sides, 551. card bases.
Specific embodiment
In order that the public can be fully understood by technical spirit of the present utility model and beneficial effect, applicant will combine below
Accompanying drawing is described in detail to specific embodiment of the present utility model, but description of the applicant to embodiment is not to technical scheme
Limitation, any being changed in the form rather than substance according to the utility model design should all be considered as protection model of the present utility model
Enclose.
In the following description it is every be related to upper and lower, left and right, the directionality of front and rear or directionality concept be all
On the basis of the position shown in Fig. 1, thus can not be understood as to the utility model provide technical scheme special limit
It is fixed.
Fig. 1 to Fig. 5 is referred to, the utility model is related to a kind of low-voltage circuit breaker, including pairing for closing the dynamic of separated time road
Contact 1 and static contact 2, the static contact 2 described in Fig. 5 are formed in one structure, including be sequentially located at left end external terminal 22,
Stationary contact 21 is provided with positioned at right-hand member and the connecting plate of the static contact panel of the setting that takes the shape of the letter U 23 and connection external terminal 22 and static contact panel 23
24, wherein described external terminal 22 is electrically connected with binding post 4, and external terminal 22 is quiet with U-shaped by connecting plate 24
Touch panel 23 realizes that staggered floor is set, and arc leading angle 25 is further fixed on the end of the side of external terminal 22 in the static contact panel 23 of U-shaped；
For suppressing and eliminate due to moving contact 1, static contact 2 separate produced by electric arc arc-chutes 3；It is mainly used in connecting breaker
And outside line and the binding post 4 that is electrically connected with static contact 2；Arc insulating cover 5, is covered in the static contact panel 22 and terminal plate of U-shaped
On 23, for when being impacted by arcing gas striking and arc extinguishing can be carried out to the electric arc for producing, reduce electric arc to external terminal
22 and the erosion of binding post 4.Its moving contact 1, static contact 2, the set-up mode of arc-chutes 3 belong to known technology, and will not
Understanding to those skilled in the art produces puzzlement, thus repeats no more herein.
Fig. 3, Fig. 4 are referred to, described arc insulating cover 5 is located on the static contact panel 23 and connecting plate 24 of the U-shaped of static contact 2,
There is the situation that disjunction etc. produces electric arc in breaker body, the arc insulating cover 5 is arranged in breaker body inside and suppresses due to mistake
The electric arc produced in the abnormal conditions moving contacts 1 such as short circuit and static contact 2 is carried, effectively prevents electric arc from flying out to the He of external terminal 22
Binding post 4 and body interior produce pollution, while the electric arc to producing can carry out certain striking effect.It is described every
Arc cover 5 includes cover body 51, side 55, L-shaped horizontal edge 53 and U-shaped horizontal edge 52, and described side 55 has a pair, and an opposite side 55 is distinguished
The front and rear both sides sidepiece of cover body 51 is arranged on, described L-shaped horizontal edge 53 is located at the left end of cover body 51 and is connected to an opposite side 55
Between, described U-shaped horizontal edge 52 is located at the right-hand member of cover body 51 and is connected between an opposite side 55, by cover body 51, an opposite side
55 and the enclosure of U-shaped horizontal edge 52 into for accommodate the static contact 2 U-shaped static contact panel 23 and the accommodating cavity 54 of connecting plate 24,
Pollution of the electric arc to the movable contact 11 of arc-chutes 3 and moving contact 1 can be reduced.L-shaped horizontal edge 53 is arranged on quiet in a state of use
At the connecting plate 24 of contact 2, electric arc can be reduced external terminal 22 is corroded, the L-shaped horizontal edge 53 have be arranged on external terminal 22
On flange 531, described flange 531 is effective to be prevented from electric arc from flying out to external terminal 22 and binding post 4 producing pollution.Such as
Shown in Fig. 3, the cover body 51 of the arc insulating cover 5 offers notch 511, and the notch 511 is arranged on the top of accommodating cavity 54, the notch
511 are available for the movable contact 11 of the moving contact 1 to expose from notch 511 with the stationary contact 21 of the contact of static contact 2 and run-on tab 25.
The notch 511 has the divider wall 513 for raising and limiting electric arc diffusion, two divider walls 513 in the both sides of the end of run-on tab 25
The striking groove 512 for accommodating run-on tab 25 is formed with described notch 511.Arc root is limited to two by described striking groove 512
Within the width of divider wall 513, improve local current densities, so as to strengthen driving force of the magnetic field to electric arc.
Please continue to refer to Fig. 3, Fig. 4, described arc insulating cover 5 is positioned with static contact 2 by the way of card is matched somebody with somebody, described
There is card base 551 respectively, described card base 551 is used to match somebody with somebody with described static contact 2 formation card on one opposite side 55.
Claims (5)
1. a kind of low-voltage circuit breaker, including pairing is used to close the moving contact (1) and static contact (2) of separated time road, the static contact (2)
Including the external terminal (22) and the static contact panel (23) of the setting that takes the shape of the letter U for connecting outside line and connection external terminal (22) and
The connecting plate (24) of static contact panel (23), static contact panel (23) one end of the U-shaped is provided with stationary contact (21) and is connected with run-on tab
(25), it is characterised in that the low-voltage circuit breaker also includes the arc being covered on the static contact panel of U-shaped (23) and connecting plate (24)
Cover (5), the arc insulating cover (5) offers notch (511), and described stationary contact (21) and run-on tab (25) reveals from notch (511)
Go out.
2. a kind of low-voltage circuit breaker according to claim 1, it is characterised in that the notch (511) is at run-on tab (25) end
The both sides at end have the divider wall (513) for raising and limiting electric arc diffusion.
3. a kind of low-voltage circuit breaker according to claim 1, it is characterised in that described arc insulating cover (5) is including cover body
(51), side (55), L-shaped horizontal edge (53), U-shaped horizontal edge (52), described side (55) have a pair, and an opposite side (55) prolongs respectively
Be located at the front and rear both sides sidepiece of cover body (51), described L-shaped horizontal edge (53) positioned at cover body (51) left end and be connected to an offside
Between side (55), the L-shaped horizontal edge (53) is arranged on connecting plate (24) place, the right side of described U-shaped horizontal edge (52) positioned at cover body (51)
Hold and be connected between an opposite side (55), by cover body (51), an opposite side (55) and U-shaped horizontal edge (52) enclosure into for holding
Receive the static contact (2) U-shaped static contact panel (23) accommodating cavity (54), described notch (511) is arranged on accommodating cavity (54)
On the cover body (51) of top.
4. a kind of low-voltage circuit breaker according to claim 3, it is characterised in that described L-shaped horizontal edge (53) is with being arranged on
Flange (531) on external terminal (22).
5. a kind of low-voltage circuit breaker according to claim 3, it is characterised in that have respectively on a described opposite side (55)
There is card base (551), described card base (551) is matched somebody with somebody for forming card with described static contact (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017303.3U CN206312857U (en) | 2017-01-06 | 2017-01-06 | A kind of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017303.3U CN206312857U (en) | 2017-01-06 | 2017-01-06 | A kind of low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312857U true CN206312857U (en) | 2017-07-07 |
Family
ID=59248626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720017303.3U Active CN206312857U (en) | 2017-01-06 | 2017-01-06 | A kind of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206312857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036907A (en) * | 2018-09-30 | 2018-12-18 | 无锡新宏泰电器科技股份有限公司 | A kind of insulation flash barrier and the arc-chutes with it |
| CN114360980A (en) * | 2021-12-31 | 2022-04-15 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
-
2017
- 2017-01-06 CN CN201720017303.3U patent/CN206312857U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036907A (en) * | 2018-09-30 | 2018-12-18 | 无锡新宏泰电器科技股份有限公司 | A kind of insulation flash barrier and the arc-chutes with it |
| CN114360980A (en) * | 2021-12-31 | 2022-04-15 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
| CN114360980B (en) * | 2021-12-31 | 2022-11-04 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
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