CN202076163U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN202076163U CN202076163U CN2011201148417U CN201120114841U CN202076163U CN 202076163 U CN202076163 U CN 202076163U CN 2011201148417 U CN2011201148417 U CN 2011201148417U CN 201120114841 U CN201120114841 U CN 201120114841U CN 202076163 U CN202076163 U CN 202076163U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- arc
- arc door
- miniature circuit
- door
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- H01H9/32—Insulating body insertable between contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a miniature circuit breaker. An operating mechanism, a static contact, a movable contact and an arc extinguishing chamber are arranged in a casing. The miniature circuit breaker is characterized in that a left partition piece and a right partition piece which are positioned at both sides of the static contact are respectively arranged in the casing, and a left arc cutting door and a right arc cutting door are respectively and axially connected to the left partition piece and the right partition piece and are positioned between the static contact and the movable contact; and moreover, the left arc cutting door and the right arc cutting door are closed when the circuit breaker is switched off and are separated when the circuit breaker is switched on. According to the miniature circuit breaker disclosed by the utility model, one arc cutting door capable of double opening and double closing is designed from both sides of the movable contact. When the movable contact is not completely opened, the arc cutting faces of the arc cutting doors are inserted from both sides of the movable contact so as to hold the movable contact, so that an electric arc is cut off, and the function of protecting the contact is achieved.
Description
Technical field
The utility model relates to low-voltage electrical apparatus, relates in particular to direct current or AC circuit breaker, specifically a kind of miniature circuit breaker.
Background technology
In existing miniature circuit breaker, mainly by air dielectric, moving contact and the electric power of fixed contact when disjunction, drive electric arc and enter arc control device, make arc extinction, this requires the angle that is used for the arc leading angle on moving contact or fixed contact and is high; In order to obtain higher arc voltage, the grid sheet of arc-extinguishing chamber of circuit breaker is comparatively arranged closely, and electric arc suffered resistance when entering arc control device is bigger, and the time of stagnating in grid sheet porch is also longer.Electric arc grid sheet porch repeatedly appear in the grid sheet with the grid sheet outside, cause falling repeatedly of arc voltage, punch-through behind that Here it is.It reduces the break performance of circuit breaker, and the arcing time is increased.
And in dc circuit breaker, voltage does not have zero passage, arcing time will be longer, just often carry out arc extinguishing by magnetic blow-out, the side that is placed in dynamic and static contact both sides or fixed contact because of permanent magnetic material contacts fully with fixed contact, along with long heating power, the magnetic of magnetic material dies down gradually, and the effect of that magnetic quenching will reduce greatly; The magnetic field energy that also has magnet to produce makes electric arc leave the moving contact zone, when arc motion is before arc control device, magnetic field can produce electromagnetic attraction to electric arc again, electric arc can not extinguish in the short time at the utmost point, under short-circuit conditions, moving contact be will burn, and the breaking capacity and the electrical endurance of circuit breaker influenced.
Summary of the invention
To be solved in the utility model is the problems referred to above that prior art exists, and aims to provide a kind of miniature circuit breaker with good arc extinguishing function.
For addressing the above problem, the utility model is by the following technical solutions: a kind of miniature circuit breaker, be provided with operating mechanism, fixed contact, moving contact and arc control device in the housing, it is characterized in that the both sides that are positioned at described fixed contact in the described housing are respectively equipped with left partition and right partition, a left cut arc door and a right cut arc door are coupling respectively on described left partition and the right partition, described left cut arc door and right cut arc door are between described fixed contact and moving contact, and closure when breaker open operation is separated when breaker closing.
Miniature circuit breaker of the present utility model, from the last fan of the both sides of moving contact design can two open pair close cut the arc door, when moving contact is not opened as yet fully; cutting the cambered surface of cutting of arc door inserts from the moving contact both sides; embrace moving contact, thereby breaking arc reaches the effect of protection contact.
As further improvement of the utility model, described left cut arc door and right cut arc door have the chain of command of cutting cambered surface and cooperating with described moving contact that cooperates with described moving contact in the breaker open operation process in the breaker closing process; The described cambered surface of cutting is positioned on the body, and described chain of command lays respectively on the control arm.
Further improve as of the present utility model, the door body of described left cut arc door and right cut arc door is vertical mutually with control arm again, describedly cuts cambered surface and the V-shaped configuration of chain of command.
Further improve as of the present utility model, described left cut arc door and the inboard of right cut arc door are provided with the seam that is connected of relative configuration again, and it is reliably closed to cut the arc door about in the time of can guaranteeing breaker open operation.
Further improve as of the present utility model, described left cut arc door is parallel with the moving surface of described moving contact with the rotating shaft of right cut arc door again.
Further improve again as of the present utility model, described left cut arc door is coupling in the following manner on the described left partition: be provided with reference column and following reference column on described left partition, offer corresponding axis hole on it respectively, described left cut arc door has the hingen in tape spool hole, described hingen is placed described going up between reference column and the following reference column, and locating shaft is located after passing axis hole on reference column, hingen and the following reference column successively; Described right cut arc door is coupling on described right partition by identical mode.
Further improve as of the present utility model, the rear portion of described arc control device is provided with alnico magnets.Best, described alnico magnets are two, are separately positioned on the back top and the bottom, back of described arc control device.
Described alnico magnets are provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces in the arc control device places described alnico magnets in the space of this cut-out.
Described alnico magnets also can be provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces except that two ends in the arc control device places described alnico magnets in the space of this cut-out.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the axonometric drawing after the right partition of the utility model is cut open.
Fig. 3 is the structural representation of the utility model housing and arc extinguishing part.
Fig. 4 is the structural representation of the utility model arc extinguishing part.
Fig. 5 is the utility model moving contact and the structural representation of cutting the arc door assembly when circuit breaker is in "on" position.
Fig. 6 is the utility model moving contact and the structural representation of cutting the arc door assembly when circuit breaker is in gate-dividing state.
Fig. 7 is a structural representation of cutting the arc door of the present utility model.
Fig. 8 is the structural representation of the right partition of the utility model.
Fig. 9 is the structural representation of the utility model left side partition.
Figure 10 is the structural representation of first kind of execution mode of the utility model arc control device.
Figure 11 is the structural representation of second kind of execution mode of the utility model arc control device, and wherein (A) is the overall structure figure of whole arc control device, (B) is the internal structure schematic diagram of arc control device.
Embodiment
With reference to accompanying drawing, a kind of miniature circuit breaker of the present utility model, be provided with operating mechanism 10, fixed contact 7, moving contact 8 and arc control device 5 in the housing 100, the both sides that are positioned at described fixed contact 7 in the described housing 100 are respectively equipped with left partition 3 and right partition 4, and leave certain clearance between left partition 3 and right partition 4 and the described housing 100.Be coupling respectively on described left partition 3 and the right partition 4 a left cut arc door 2 and a right cut arc door 1, described left cut arc door 2 and right cut arc door 1 between described fixed contact 7 and moving contact 8, and when breaker open operation closure, when breaker closing separately.
Wherein, described operating mechanism 10 is the formula of the putting structure of any prior art, comprises handle, U type pin, snap close, tripping, lever and small rack.
Described left cut arc door 2 and right cut arc door 1 have the chain of command 22,12 of cutting cambered surface 23,13 and cooperating with described moving contact 8 that cooperates with described moving contact 8 in the breaker open operation process in the breaker closing process; The described cambered surface 23,13 of cutting is positioned on the body, and described chain of command 22,12 lays respectively on the control arm 24,14.
Door body and the control arm 24,14 of described left cut arc door 2 and right cut arc door 1 is vertical mutually, describedly cuts cambered surface 23,13 and chain of command 22,12 V-shaped configurations.Owing to adopted two pair " V " fonts of closing of opening to cut the arc door, by the angle (being chain of command and the angle of cutting cambered surface) that changes " V " font; The distance of location hole and moving contact side and cut arc door location hole the position (cut the cambered surface side or in the side of chain of command) applicable to any circuit breaker.
What the inboard of described left cut arc door 2 and right cut arc door 1 was provided with relative configuration is connected seam 25,15.
Described left cut arc door 2 is parallel with the moving surface of described moving contact 8 with the rotating shaft of right cut arc door 1.
Described left cut arc door 2 is coupling in the following manner on the described left partition 3: be provided with reference column 31 and following reference column 32 on described left partition 3, offer corresponding axis hole 33,34 on it respectively, described left cut arc door 2 has the hingen 26 in tape spool hole 21, described hingen 26 is placed described going up between reference column 31 and the following reference column 32, and locating shaft 9 passes axis hole 33,21,34 back location the on reference column 31, hingen 26 and the following reference column 32 successively.In the present embodiment, described upward reference column 31 is the rectangle post, and following reference column 32 is a triangular column.
Described right cut arc door 1 is coupling in the following manner on the described right partition 4: be provided with reference column 41 and following reference column 42 on described right partition 4, offer corresponding axis hole 43,44 on it respectively, described right cut arc door 1 has the hingen 16 in tape spool hole 11, described hingen 16 is placed described going up between reference column 41 and the following reference column 42, and locating shaft 6 passes axis hole 43,11,44 back location the on reference column 41, hingen 16 and the following reference column 42 successively.In the present embodiment, described upward reference column 41 is the rectangle post, and following reference column 42 is a triangular column.
With reference to Figure 10, described arc control device 5 comprise skeleton 51, baffle plate 53 and the arc extinguishing grid pieces 52 of arc control device.What the skeleton 51 of arc control device and baffle plate 53 both can have been made split also can make an integral body.The preferential gas exhausted material that adopts is made, and is provided with alnico magnets 54 at the rear portion of arc control device 5.Described alnico magnets 54 are two, are separately positioned on the back top and the bottom, back of described arc control device 5.Described alnico magnets 54 are provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces 52 in the arc control device 5 places described alnico magnets 54 in the space of this cut-out.These scheme magnet two ends can be seen in the arc control device both sides.
With reference to Figure 11, the another kind of execution mode of the utility model arc control device, be that with Figure 10 execution mode difference described alnico magnets 54 are provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces 52 except that two ends in the arc control device 5 places described alnico magnets 54 in the space of this cut-out.This scheme magnet all rotates in the arc control device, and the outside can't be seen.This arc control device scheme is applicable to any circuit breaker.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection range of the present utility model.
Claims (10)
1. miniature circuit breaker, be provided with operating mechanism (10) in the housing (100), fixed contact (7), moving contact (8) and arc control device (5), it is characterized in that the both sides that are positioned at described fixed contact (7) in the described housing (100) are respectively equipped with left partition (3) and right partition (4), a left cut arc door (2) and a right cut arc door (1) are coupling respectively on described left partition (3) and the right partition (4), described left cut arc door (2) and right cut arc door (1) are positioned between described fixed contact (7) and the moving contact (8), and closure when breaker open operation is separated when breaker closing.
2. miniature circuit breaker as claimed in claim 1 is characterized in that described left cut arc door (2) and right cut arc door (1) have the chain of command (22,12) of cutting cambered surface (23,13) and cooperating with described moving contact (8) that cooperates with described moving contact (8) in the breaker closing process in the breaker open operation process; The described cambered surface (23,13) of cutting is positioned on the body, and described chain of command (22,12) lays respectively on the control arm (24,14).
3. miniature circuit breaker as claimed in claim 2 is characterized in that door body and the control arm (24,14) of described left cut arc door (2) and right cut arc door (1) is vertical mutually, describedly cuts cambered surface (23,13) and the V-shaped configuration of chain of command (22,12).
4. what miniature circuit breaker as claimed in claim 1, the inboard that it is characterized in that described left cut arc door (2) and right cut arc door (1) were provided with relative configuration is connected seam (25,15).
5. miniature circuit breaker as claimed in claim 1 is characterized in that the rotating shaft of described left cut arc door (2) and right cut arc door (1) is parallel with the moving surface of described moving contact (8).
6. miniature circuit breaker as claimed in claim 1, it is characterized in that described left cut arc door (2) is coupling in the following manner on the described left partition (3): on described left partition (3), be provided with reference column (31) and following reference column (32), offer corresponding axis hole (33 on it respectively, 34), described left cut arc door (2) has the hingen (26) of tape spool hole (21), described hingen (26) is placed described going up between reference column (31) and the following reference column (32), and a locating shaft (9) passes reference column (31) successively, axis hole (33 on hingen (26) and the following reference column (32), 21,34) location, back; Described right cut arc door (1) is coupling on described right partition (4) by identical mode.
7. as any one described miniature circuit breaker of claim 1-6, it is characterized in that the rear portion of described arc control device (5) is provided with alnico magnets (54).
8. miniature circuit breaker as claimed in claim 7 is characterized in that described alnico magnets (54) are two, is separately positioned on the back top and the bottom, back of described arc control device (5).
9. miniature circuit breaker as claimed in claim 8, it is characterized in that described alnico magnets (54) are provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces (52) in the arc control device (5) places described alnico magnets (54) in the space of this cut-out.
10. miniature circuit breaker as claimed in claim 8, it is characterized in that described alnico magnets (54) are provided with in the following manner: the rear portion excision part of all arc extinguishing grid pieces (52) except that two ends in the arc control device (5) places described alnico magnets (54) in the space of this cut-out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201148417U CN202076163U (en) | 2011-04-18 | 2011-04-18 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201148417U CN202076163U (en) | 2011-04-18 | 2011-04-18 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076163U true CN202076163U (en) | 2011-12-14 |
Family
ID=45114253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201148417U Expired - Fee Related CN202076163U (en) | 2011-04-18 | 2011-04-18 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076163U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015058501A1 (en) * | 2013-10-23 | 2015-04-30 | 通能顺达科技国际有限公司 | A synchronous insulation separation power switch device |
| CN106558463A (en) * | 2015-09-30 | 2017-04-05 | 上海良信电器股份有限公司 | A kind of contact of breaker protection device |
| CN106663555A (en) * | 2014-03-27 | 2017-05-10 | 沙尔特宝有限公司 | Electrical switching apparatus comprising improved arc-quenching device |
| WO2019121986A1 (en) * | 2017-12-21 | 2019-06-27 | Tyco Electronics (Shenzhen) Co. Ltd | Electrical contactor system |
-
2011
- 2011-04-18 CN CN2011201148417U patent/CN202076163U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015058501A1 (en) * | 2013-10-23 | 2015-04-30 | 通能顺达科技国际有限公司 | A synchronous insulation separation power switch device |
| CN106663555A (en) * | 2014-03-27 | 2017-05-10 | 沙尔特宝有限公司 | Electrical switching apparatus comprising improved arc-quenching device |
| CN106663555B (en) * | 2014-03-27 | 2018-11-23 | 沙尔特宝有限公司 | Electric switchgear with improved arc extinction mechanism |
| CN106558463A (en) * | 2015-09-30 | 2017-04-05 | 上海良信电器股份有限公司 | A kind of contact of breaker protection device |
| CN106558463B (en) * | 2015-09-30 | 2019-06-14 | 上海良信电器股份有限公司 | A kind of contact of breaker protective device |
| WO2019121986A1 (en) * | 2017-12-21 | 2019-06-27 | Tyco Electronics (Shenzhen) Co. Ltd | Electrical contactor system |
| CN109950074A (en) * | 2017-12-21 | 2019-06-28 | 泰科电子(深圳)有限公司 | Electrical contact system |
| US11361914B2 (en) | 2017-12-21 | 2022-06-14 | Tyco Electronics (Shenzhen) Co. Ltd. | Electrical contactor system |
| CN109950074B (en) * | 2017-12-21 | 2024-06-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107359067B (en) | Miniature circuit breaker with stronger arc extinguishing ability | |
| CN107359068B (en) | Moulded case circuit breaker with compound arc extinguishing performance | |
| CN202076163U (en) | Miniature circuit breaker | |
| CA2663783A1 (en) | Electrical switching apparatus, and arc chute and arc member therefor | |
| CN107342199B (en) | Housing type shielding arc extinguishing mechanism | |
| CN107578938B (en) | Low-voltage circuit breaker | |
| CN102938354B (en) | Contact and arc extinction system of mold case circuit breaker | |
| CN102376505B (en) | Contactor protecting sheet and molded case circuit breaker contactor with high breaking capacity | |
| CN112420462A (en) | Contact arc extinguishing device of circuit breaker | |
| CN107393779B (en) | AC/DC universal circuit breaker with strong arc extinguishing effect | |
| CN101615535B (en) | Permanent magnet opening and closing type DC intelligent circuit breaker | |
| CN220172050U (en) | Arc extinguishing chamber and circuit breaker | |
| CN217521937U (en) | Circuit breaker | |
| CN109119293B (en) | Direct current contactor contact system and direct current contactor | |
| CN206312857U (en) | A kind of low-voltage circuit breaker | |
| CN107393780B (en) | Miniature circuit breaker with strong breaking capacity | |
| CN107393777B (en) | Moulded case circuit breaker with high breaking performance | |
| CN214797231U (en) | Breaking device | |
| CN209766346U (en) | Arc extinguishing system of direct current breaker | |
| CN102915894B (en) | Arc-blowing device of direct-current circuit breaker | |
| CN207149504U (en) | A kind of Minitype electrical leakage breaker N poles arc quenching system | |
| CN213304049U (en) | Contact arc extinguishing device of circuit breaker | |
| CN212695087U (en) | Contact arc-extinguishing device of circuit breaker with improved structure | |
| CN202549755U (en) | Arc extinguishing system for plastic shell breaker with arc regurgitating preventing function | |
| CN213026022U (en) | Optimized arc extinguishing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140418 |