CN204271021U - With the breaker with double breaks and plastic case of disjunction screening arrangement - Google Patents
With the breaker with double breaks and plastic case of disjunction screening arrangement Download PDFInfo
- Publication number
- CN204271021U CN204271021U CN201420814814.4U CN201420814814U CN204271021U CN 204271021 U CN204271021 U CN 204271021U CN 201420814814 U CN201420814814 U CN 201420814814U CN 204271021 U CN204271021 U CN 204271021U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- cavity
- breaker
- moving contact
- 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.)
- Active
Links
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
With a breaker with double breaks and plastic case for disjunction screening arrangement, belong to low-pressure plastic shell circuit breaker technical field.Comprise: one for driving the operating mechanism of moving contact component, at least one is provided with the arc control device pedestal of contact arc extinguishing device, contact arc extinguishing device comprises two fixed contacts, moving contact component comprises rotating shaft, at least one the band moving contact of double-contact and touch spring, each arc control device pedestal has the cavity that is day font, the double-contact of moving contact probes in cavity, and coordinate with fixed contact, feature: rotating shaft and day font cavity between also have additional an insulation shielding plate, it can cover above the cavity of day font in interrupting process, strengthens air-tightness.The transmission efficiency of the rigidity of spring-like part, mechanism driving chain and the normal operation of other functional part can be ensured; Be conducive to strengthening the air-blowing power to electric arc arc column, impel electric arc fast transfer to enter arc extinguishing grid pieces, realize strong current limitation effect, improve breaking capacity.
Description
Technical field
The utility model belongs to low-pressure plastic shell circuit breaker technical field, is specifically related to a kind of breaker with double breaks and plastic case with disjunction screening arrangement.
Background technology
Low-pressure plastic shell circuit breaker is when disjunction short-circuit current limit, the general self-excitation magnetic field by contact loop produces the electrodynamic repulsion force higher to moving contact, moving contact is scolding at a high speed Kaiyuan City from the electric arc rapid elongation that will produce while fixed contact, and utilizes arc column resistance to realize the current limitation effect strengthened.In breaking course, contact arc-extinguishing system can produce hyperbar and high-temperature gas, for high-performance low-voltage breaker of plastic casing, often take measures to impel the High Temperature Gas physical efficiency that mixes and comprise metallic vapour away from dynamic and static voltage contact area and to discharge to direction, gas outlet fast, the breaking capacity caused to avoid electric arc to restrike in voltage contact area declines, even disjunction failure.
In prior art, as Chinese utility model patent Authorization Notice No. CN202977342U discloses " a kind of low-pressure plastic shell circuit breaker ", by the optimization to arc control device exhaust passage, realize the cooling to the HTHP band metal ion gas that short circuit breaking process produces and the liberation that disappears, avoid charged ion directly to spray pollution terminals and cause short trouble, and improve the fail safe for operating personnel.But, relatively tortuous passage is unfavorable for the quick discharge of gas, the pressure high temperature hot gas of arc control device inner accumulated can return spray to breaker rotating axis and operating mechanism region to a certain extent, can tempering effect be produced to spring-like part and reduce spring rate on the one hand, metallic vapour can be caused to pollute for structure driven part on the other hand, reduce transmission efficiency, these all can have a negative impact to the integrated operation performance of circuit breaker.
In view of above-mentioned prior art, be necessary to be improved the structure of existing breaker with double breaks and plastic case.For this reason, the applicant has done positive and useful design, finally defines technical scheme described below.
Summary of the invention
Task of the present utility model to provide a kind of breaker with double breaks and plastic case with disjunction screening arrangement, and it can ensure the normal operation of the rigidity of spring-like part, the transmission efficiency of mechanism driving chain and other functional part; Meanwhile, be conducive to strengthening the air-blowing power to electric arc arc column, impel electric arc fast transfer to enter arc extinguishing grid pieces, realize strong current limitation effect, improve breaking capacity.
Task of the present utility model has been come like this, a kind of breaker with double breaks and plastic case with disjunction screening arrangement, comprise: one for driving the operating mechanism of moving contact component, at least one is provided with the arc control device pedestal of contact arc extinguishing device, wherein, described contact arc extinguishing device comprises two fixed contacts, described moving contact component comprises rotating shaft, be arranged in rotating shaft at least one band double-contact moving contact and for providing the touch spring of contact to moving contact, each arc control device pedestal has one for holding the cavity in day font of described moving contact activity, the double-contact of described moving contact probes in the cavity of day font respectively, and coordinate and the connecting and disconnecting of realizing circuit with the fixed contact on the contact arc extinguishing device in cavity, it is characterized in that: described rotating shaft and described arc control device pedestal day font cavity between also have additional an insulation shielding plate for linking with moving contact, this insulation shielding plate can cover in circuit breaker interrupting process arc control device pedestal day font cavity above, for strengthening air-tightness.
In a specific embodiment of the present utility model, described arc control device pedestal and described rotating shaft are fitted to each other, and are formed with the arc for holding the activity of described insulation shielding plate or class arc lacuna between rotating shaft and arc control device pedestal.
In another specific embodiment of the present utility model, described insulation shielding plate is a flexible rectangular plate, and the side of this flexible rectangular plate has shoulder, opposite side has occlusion part, between described shoulder and described occlusion part, at least offer a square opening.
In another specific embodiment of the present utility model, described moving contact is V shape double-breakpoint structure, comprise a U-shaped conducting rod, two support arms that this U-shaped conducting rod be arranged in parallel by facing each other, being arranged on the U-shaped tie-beam above two support arms and being arranged in the middle part of U-shaped tie-beam the pitman arm of top, described pitman arm passes the square opening of described insulation shielding plate and is connected with rotating shaft pivotable, and described tie-beam is supported on the shoulder of insulation shielding plate.
Also have in a specific embodiment of the present utility model, described square opening also expands the fluting be provided with for the two actuating arm activities for touch spring at the two ends near shoulder side.
In an of the present utility model and then specific embodiment, described U-shaped tie-beam offers a pair gap, this to gap for holding two actuating arms of joining described touch spring.
More of the present utility model and in a specific embodiment, described arc control device pedestal day font the rectangle frame that become with wall enclosure by the first wall, the second wall, the 3rd wall of cavity and the partition be placed in the middle of rectangle frame form, two fixed contacts of contact arc extinguishing device to be arranged on respectively in the cavity of day font and to be close to the side of wall.
The utility model is due to after employing said structure, the beneficial effect had: on the one hand, reduce the high temperature that short circuit breaking process arc control device inside produces, high metal gas to breaker rotating axis system, operating mechanism and other region return spray rate, ensure the rigidity of structure of spring-like part, the transmission efficiency of mechanism driving chain and the normal operation of other functional part; In addition, by the seal approach to voltage contact area rear portion, be conducive to strengthening the air-blowing power to electric arc arc column, impel electric arc fast transfer to enter arc extinguishing grid pieces, realize strong current limitation effect, improve the breaking capacity of circuit breaker.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of the present utility model.
Fig. 2 is the planar structure schematic diagram of the utility model in operating mechanism "on" position.
Fig. 3 is the effect schematic diagram of the utility model insulation shielding plate when moving contact is scolded out in breaking course.
Fig. 4 is the structural representation of insulation shielding plate in the utility model.
Fig. 5 is exploded perspective schematic diagram of the present utility model.
Fig. 6 is planar explosive schematic diagram of the present utility model.
Fig. 7 is perspective view of the present utility model.
In figure: 1. operating mechanism; 2. arc control device pedestal, 20. cavitys, 201. first walls, 202. second walls, 203. the 3rd walls, 204. walls, 205. cut off; 3. rotating shaft; 5. fixed contact; 6. fixed contact; 10. insulation shielding plate, 101. square openings, 102. flutings, 103. shoulders, 104. occlusion parts; 11. moving contacts, 111. double-contacts, 112.U shape tie-beam, 1121. gap, 113. pitman arms, 114.U shape support arm; 12. touch springs, 121. actuating arms.
Embodiment
Technical spirit of the present utility model and beneficial effect can be fully understood in order to make the public; applicant will describe in detail embodiment of the present utility model 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 utility model design all should be considered as protection range of the present utility model.
Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the utility model relates to a kind of breaker with double breaks and plastic case with disjunction screening arrangement, comprise: one for driving the operating mechanism 1 of moving contact component, at least one is provided with the arc control device pedestal 2 of contact arc extinguishing device and transships or/and short-circuit release, wherein, described contact arc extinguishing device comprises two fixed contacts 5, 6, described moving contact component comprises rotating shaft 3, be arranged at least one the band double-contact in rotating shaft 3 moving contact 11 and for providing the touch spring 12 of contact to moving contact 11, each arc control device pedestal 2 has one for holding the cavity 20 in day font of described moving contact 11 activity, the double-contact of described moving contact 11 probes in the cavity 20 of day font respectively, and with the fixed contact 5 on the contact arc extinguishing device in cavity 20, 6 coordinate and the connecting and disconnecting of realizing circuit, feature is: described rotating shaft 3 and described arc control device pedestal 2 day font cavity 20 between also have additional an insulation shielding plate 10 for linking with moving contact 11, this insulation shielding plate 10 can cover in circuit breaker interrupting process arc control device pedestal 2 day font cavity 20 above, for strengthening air-tightness.
Further, described arc control device pedestal 2 is fitted to each other with described rotating shaft 3, is formed with the arc for holding the activity of described insulation shielding plate 10 or class arc lacuna between rotating shaft 3 and arc control device pedestal 2.Described insulation shielding plate 10 is a flexible rectangular plate, and the side of this flexible rectangular plate has shoulder 103, opposite side has occlusion part 104, at least offers a square opening 101 between described shoulder 103 and described occlusion part 104.Described moving contact 11 is V shape double-breakpoint structure, comprise a U-shaped conducting rod, two support arms 114 that this U-shaped conducting rod be arranged in parallel by facing each other, being arranged on the U-shaped tie-beam 112 above two support arms 114 and being arranged in the middle part of U-shaped tie-beam 112 pitman arm 113 of top, described pitman arm 113 passes the square opening 101 of described insulation shielding plate 10 and is connected with rotating shaft 3 pivotable, and described tie-beam 112 is supported on the shoulder 103 of insulation shielding plate 10.Described square opening 101 also expands the fluting 102 be provided with for two actuating arm 121 activities for touch spring 12 at the two ends near shoulder 103 side; Correspondingly, described U-shaped tie-beam 112 offers a pair gap 1121, this coordinates with two actuating arms 121 of touch spring 12 gap 1121 and plays a part to carry touch spring pressure.
Further, described arc control device pedestal 2 day font the rectangle frame that become with wall 204 enclosure by the first wall 201, second wall 202, the 3rd wall 203 of cavity 20 and the partition 205 be placed in the middle of rectangle frame form, two fixed contacts 5,6 of contact arc extinguishing device to be arranged on respectively in the cavity 20 of day font and to be close to the side of wall 204.
Claims (7)
1.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement, comprise: one for driving the operating mechanism (1) of moving contact component, at least one is provided with the arc control device pedestal (2) of contact arc extinguishing device, wherein, described contact arc extinguishing device comprises two fixed contacts (5, 6), described moving contact component comprises rotating shaft (3), be arranged at least one the band double-contact in rotating shaft (3) moving contact (11) and for providing the touch spring (12) of contact to moving contact (11), each arc control device pedestal (2) has one for holding the movable cavity (20) in day font of described moving contact (11), the double-contact of described moving contact (11) probes in the cavity (20) of day font respectively, and with the fixed contact (5 on the contact arc extinguishing device in cavity (20), 6) coordinate and the connecting and disconnecting of realizing circuit, it is characterized in that: described rotating shaft (3) and described arc control device pedestal (2) day font cavity (20) between also have additional an insulation shielding plate (10) for linking with moving contact (11), this insulation shielding plate (10) can cover in circuit breaker interrupting process arc control device pedestal (2) day font cavity (20) top, for strengthening air-tightness.
2.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 1, it is characterized in that described arc control device pedestal (2) and described rotating shaft (3) are fitted to each other, being formed between rotating shaft (3) and arc control device pedestal (2) for holding the movable arc of described insulation shielding plate (10) or class arc lacuna.
3.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 1, it is characterized in that described insulation shielding plate (10) is a flexible rectangular plate, the side of this flexible rectangular plate has shoulder (103), opposite side has occlusion part (104), at least offers a square opening (101) between described shoulder (103) and described occlusion part (104).
4.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 3, it is characterized in that described moving contact (11) is V shape double-breakpoint structure, comprise a U-shaped conducting rod, two support arms (114) that this U-shaped conducting rod be arranged in parallel by facing each other, be arranged on the U-shaped tie-beam (112) of two support arms (114) top and be arranged on the pitman arm (113) of top, U-shaped tie-beam (112) middle part, described pitman arm (113) through described insulation shielding plate (10) square opening (101) and be connected with rotating shaft (3) pivotable, described tie-beam (112) is supported on the shoulder (103) of insulation shielding plate (10).
5.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 3, is characterized in that described square opening (101) also expands at the two ends near shoulder (103) side and is provided with for the movable fluting (102) of two actuating arms (121) for touch spring (12).
6.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 4, it is characterized in that described U-shaped tie-beam (112) offers a pair gap (1121), this joins two actuating arms (121) of touch spring (12) for appearance to gap (1121).
7.
a kind of breaker with double breaks and plastic case with disjunction screening arrangement according to claim 1, it is characterized in that described arc control device pedestal (2) day font the rectangle frame that become with wall (204) enclosure by the first wall (201), the second wall (202), the 3rd wall (203) of cavity (20) and the partition (205) be placed in the middle of rectangle frame form, two fixed contacts (5,6) of contact arc extinguishing device to be arranged on respectively in the cavity (20) of day font and to be close to the side of wall (204).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814814.4U CN204271021U (en) | 2014-12-19 | 2014-12-19 | With the breaker with double breaks and plastic case of disjunction screening arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814814.4U CN204271021U (en) | 2014-12-19 | 2014-12-19 | With the breaker with double breaks and plastic case of disjunction screening arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271021U true CN204271021U (en) | 2015-04-15 |
Family
ID=52805873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420814814.4U Active CN204271021U (en) | 2014-12-19 | 2014-12-19 | With the breaker with double breaks and plastic case of disjunction screening arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
-
2014
- 2014-12-19 CN CN201420814814.4U patent/CN204271021U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100593833C (en) | Contact system of plastic case breaker | |
| CN103021750B (en) | With the low-voltage circuit breaker of pneumatic trip gear | |
| JP2014225452A (en) | Arc-extinguishing device of wiring circuit breaker | |
| CN106098438B (en) | One kind has high breaking capacity arc quenching system | |
| CN201066667Y (en) | A contactor system for plastic breaker | |
| CN104810222B (en) | The arc-chutes of a kind of fast arc extinction and apply the miniaturization chopper of these arc-chutes | |
| CN106098477A (en) | A kind of high-voltage DC contactor of band magnetic coil arc extinguishing | |
| CN102938354B (en) | Contact and arc extinction system of mold case circuit breaker | |
| CN204271021U (en) | With the breaker with double breaks and plastic case of disjunction screening arrangement | |
| CN103000465B (en) | Contact system of novel high-capacity medium-voltage direct current breaker | |
| CN204927077U (en) | Frame -type circuit breaker's contact system | |
| CN208336117U (en) | A kind of breaker of plastic casing | |
| CN209199866U (en) | Breaker | |
| CN203085442U (en) | Permanent-magnetic Arc blowing device for DC isolating switch | |
| CN207303018U (en) | A kind of omnipotent breaker | |
| CN108766849A (en) | Breaker double arc extinguishing chambers static contact arc eliminating module | |
| CN100435253C (en) | A high-speed double-break magnetic blowing middle-pressure great electric current direct current current-limiting circuit breaker | |
| CN204390940U (en) | DC contactor arc-extinguisher | |
| CN204332879U (en) | Small circuit breaker mechanism and arc quenching system | |
| CN107527773A (en) | A kind of omnipotent breaker with powerful arc extinction performance | |
| CN209766346U (en) | Arc extinguishing system of direct current breaker | |
| CN207149504U (en) | A kind of Minitype electrical leakage breaker N poles arc quenching system | |
| CN207302929U (en) | A kind of breaker of plastic casing with compound arc extinction performance | |
| CN203134624U (en) | Insertion type miniature circuit breaker | |
| CN208336131U (en) | Breaker double arc extinguishing chambers static contact arc eliminating module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |