CN202651014U - High breaking energy storage dual-axis miniature circuit breaker - Google Patents
High breaking energy storage dual-axis miniature circuit breaker Download PDFInfo
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- CN202651014U CN202651014U CN 201220142791 CN201220142791U CN202651014U CN 202651014 U CN202651014 U CN 202651014U CN 201220142791 CN201220142791 CN 201220142791 CN 201220142791 U CN201220142791 U CN 201220142791U CN 202651014 U CN202651014 U CN 202651014U
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- energy storage
- arc
- circuit breaker
- lever
- miniature circuit
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Abstract
The utility model relates to a high breaking energy storage dual-axis miniature circuit breaker. An operation mechanism comprises a handle, a jump pin which is in linkage with the handle through a connecting rod, a lock catch engaged with the jump pin, a lever, a moving contact seat with a moving contact and an energy storage component. A lever shaft and a contact shaft are fixed between the inner walls on both sides of a casing body. The lever shaft is successively hinged with a torsion spring, the energy storage component, the lever and the lock catch. The moving contact seat is hinged on the contact shaft. A spring connecting rod is arranged between the lever and the moving contact seat. The outer spring connecting rod is sheathed with a contact spring. The operation mechanism further comprises a return spring. One end of the return spring is fixed with the lever, and the other end of the return spring is fixed with a magnetic yoke. The energy storage component comprises a first tail end and a second tail end. The handle is provided with a protruding part. The first tail end and the protruding part are in cooperative linkage. The moving contact seat is provided with gengon, and the gengon is used to limit the rotation of the second tail end under the action of the protruding part. According to the utility model, the rotation angle of the moving contact is increased; the opening distance of the circuit breaker is increased; and the service life of the circuit breaker is prolonged.
Description
Technical field
The utility model relates to a kind of high breaking energy storage twin shaft miniature circuit breaker.
Background technology
In order to guarantee the reliability service of circuit breaker, the mechanical property of circuit breaker is very important.Guaranteeing arc control device in normal operation, improving the mechanical property of circuit breaker and can set about from following: one, suitably improve contact pressure, make good electrically contacting between dynamic/static contact, and make its contact resistance be less than setting; Two, improve breaking capacity, can reduce the arcing time, prolong the electricapparatus life-span of circuit breaker.Chinese utility model patent number is a kind of high breaking energy storage twin shaft miniature circuit breaker of 97248479, proposition is embedded in curve limiting section on the handle attachment between axle and the handle by cover, rub with the arc surface on the movable contact block, thereby moving contact is suspended in a certain position, when crossing a certain extreme position, the moving contact toilet drives moving contact and pushes ahead fast.Adopt this structure, although improved in a way the speed of dynamic/static contact closure,, its effect is limited, and the while is very little for the raising impact of the breaking capacity of circuit breaker.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and the quick-make of a kind of energy and disjunction dynamic/static contact are provided, and ensures the high breaking energy storage twin shaft miniature circuit breaker of enough contact pressure and breaking capacity.
For achieving the above object, the utility model adopts a kind of like this high breaking energy storage twin shaft miniature circuit breaker, comprise the housing with clamp and be arranged at operating mechanism in the inner chamber, instantaneous release, bimetal leaf, run-on tab and arc control device, described operating mechanism comprises handle, tripping by connecting rod and the interlock of described handle, the snap close meshing with described tripping, lever, be provided with movable contact block and the energy storage part of moving contact, truck dead lever axle and contact axle between the both sides inwall of described housing, hinged torsion spring successively on described lever shaft, described energy storage part, described lever and described snap close, place latch spring in the groove of described snap close, described movable contact block is hinged on the described contact axle, be provided with spring link between described lever and the described movable contact block, described spring link overcoat has touch spring, described operating mechanism also comprises a return spring, one end of described return spring is fixed in described lever, the other end of described return spring is fixed in the yoke in the described instantaneous release, described energy storage part comprises first terminal and the second end, described handle is provided with jut, described the first end cooperates interlock with described jut, described movable contact block is provided with gengon, and described gengon is in order to be limited in the rotation of described the second end under the described jut effect.
Especially, described snap close is provided with arc groove, is fixed with draw-bar seat on the described housing, and described draw-bar seat is provided with annular breach, described two golden pull bar has hook portion and pushed section, and described hook portion and described pushed section are set up in respectively described arc groove and described annular breach.
Especially, described housing offers the first row pore in the back position, top that is positioned at described arc control device, and described housing offers the second row pore in the back position, bottom that is positioned at described arc control device.
Especially, described fixed contact is positioned on the fixed contact arc, and described fixed contact arc extends to the top of arc control device, and described fixed contact arc and described run-on tab are circular-arc.
Especially, in the both sides of described fixed contact arc, with described housing both sides inwall flash barrier is set abreast, described flash barrier adopts aerogenesis arc extinguishing plastics, and described flash barrier is provided with multiple tracks groove and convex tendon.
Especially, between described flash barrier and described housing both sides inwall, magnetic conductive board is set.
By adopting above-mentioned structure, the beneficial effects of the utility model are: in the rotation process of operating mechanism, the energy storage part withstands movable contact block, movable contact block is suspended in a certain position, continue driving handle, touch spring is storage of potential energy then, when handle promotes the energy storage part, the energy storage part is separated with movable contact block, moving contact quick-make under the effect of touch spring, thus shortened the closing time of dynamic/static contact.In addition, compare with tradition, increased the movable contact head-turned angle, also strengthened simultaneously the distance of opening of circuit breaker, when circuit breaker because of manually or during the fault disjunction, touch spring and return spring release potential energy, dynamic/static contact is disjunction rapidly, and elongating arc extinguishes it rapidly, has prolonged the life-span of circuit breaker.
Description of drawings
Fig. 1 is the structure chart after the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker removes cap;
Fig. 2 is the structure chart after the utility model embodiment two high breaking energy storage twin shaft miniature circuit breakers remove cap;
Fig. 3 is in the operating mechanism of the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker, the rotation of the second end 122 of gengon 101 restriction energy storage parts 12, thereby the structural representation that touch spring 18 is compressed;
Fig. 4 is in the operating mechanism of the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker, and second terminal 122 of energy storage part 12 breaks away from the restriction of gengon 101, and touch spring 18 discharges the structural representation of potential energy;
Fig. 5 is the stereogram of movable contact block and moving contact in the operating mechanism of the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker;
Fig. 6 is the stereogram of two golden pull bars in the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker;
Fig. 7 is the rearview of the housing pedestal of the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker;
Fig. 8 is the schematic diagram of arc ignition system in the utility model embodiment one high breaking energy storage twin shaft miniature circuit breaker;
Among the figure: 1, clamp; 2, bimetal leaf; 3, run-on tab; 4, arc control device; 5, handle; 51, jut; 6, connecting rod; 7, tripping; 8, snap close; 81, arc groove; 9, lever; 10, movable contact block; 101, gengon; 11, moving contact; 12, energy storage part; 121, the first end; 122, the second end; 13, lever shaft; 14, contact axle; 15, torsion spring; 16, latch spring; 17, spring link; 18, touch spring; 19, return spring; 20, housing; 201, first row pore; 202, second row pore; 21, draw-bar seat; 211, annular breach; 22, two golden pull bars; 221, hook portion; 222, pushed section; 23, fixed contact; 24, fixed contact arc; 26, instantaneous release; 261, yoke; 262, moving iron core; 263, push rod; 27, flash barrier; 271, groove; 272, convex tendon.
Such as Fig. 1,2,3, shown in 4, a kind of high breaking energy storage twin shaft miniature circuit breaker, comprise the housing 20 with clamp 1 and be arranged at operating mechanism in the inner chamber, instantaneous release 26, bimetal leaf 2, run-on tab 3 and arc control device 4, operating mechanism comprises handle 5, by the tripping 7 of connecting rod 6 with handle 5 interlocks, the snap close 8 meshing with tripping 7, lever 9, be provided with movable contact block 10 and the energy storage part 12 of moving contact 11, truck dead lever axle 13 and contact axle 14 between the both sides inwall of housing 20, hinged torsion spring 15 successively on lever shaft 13, energy storage part 12, lever 9 and snap close 8, place latch spring 16 in the groove of snap close 8, movable contact block 10 is hinged on the contact axle 14, be provided with spring link 17 between lever 9 and the movable contact block 10, spring link 17 overcoats have touch spring 18, operating mechanism also comprises a return spring 19, one end of return spring 19 is fixed in lever 9, the other end of return spring 19 is fixed in the yoke 261 in the instantaneous release 26, energy storage part 12 comprises first terminal the 121 and second end 122, handle 5 is provided with jut 51, first terminal 121 cooperates interlock with jut 51, movable contact block 10 is provided with gengon 101, and gengon 101 is in order to be limited in the rotation of lower the second end 122 of jut 51 effects.
Embodiment
Shown in Fig. 1,5, snap close 8 is provided with arc groove 81, is fixed with draw-bar seat 21 on the housing 20, and draw-bar seat 21 is provided with annular breach 211, two golden pull bars 22 have hook portion 221 and pushed section 222, and hook portion 221 and pushed section 222 are set up in respectively arc groove 81 and annular breach 211.
Shown in Fig. 1,6, housing 20 offers first row pore 201 in the back position, top that is positioned at arc control device 4, and housing 20 offers second row pore 202 in the back position, bottom that is positioned at arc control device 4.During the circuit breaker disjunction, the high-temperature gas in the inner chamber promotes electric arc to arc control device 4 motions.Because arc control device are provided with exhaust outlet in two ends about in the of 4, electric arc under the effect of air-blowing in arc control device 4 even arc extinguishing.
Shown in Fig. 1,7,8, fixed contact 23 is positioned on the fixed contact arc 24, and fixed contact arc 24 extends to the top of arc control device 4, and fixed contact arc 24 and run-on tab 3 are circular-arc.Because fixed contact arc 24 and run-on tab 3 are circular-arc, arcing standstill time reduces greatly, has improved the breaking capacity of circuit breaker.In the both sides of fixed contact arc 24, with housing 20 both sides inwalls flash barrier 27 is set abreast, flash barrier 27 adopts aerogenesis arc extinguishing plastics, and flash barrier 27 is provided with multiple tracks groove 271 and convex tendon 272.The surface area of aerogenesis arc extinguishing plastics increases, thereby has increased the gas production of flash barrier 27, and during electric arc process flash barrier 27, electric arc air-blowing effect strengthens.
Between flash barrier 27 and housing 20 both sides inwalls, magnetic conductive board is set.Magnetic conductive board has strengthened the electromagnetic field of arc channel position, thereby has strengthened the effect to the electric arc magnetic blow-out.
Operation principle of the present utility model: when in the circuit overload or short circuit occuring, bimetal leaf 2 bendings, thereby promote push rod 263 by two golden pull bar 22 pulling snap closes 8 or moving iron core 262 and promote snap close 8 releases, operating mechanism drives return under the effect of return spring 19 power, and product is in open position again.
In the rotation process of operating mechanism, energy storage part 12 withstands movable contact block 10, movable contact block 10 is suspended in a certain position, continue driving handle 5,18 storage of potential energy of touch spring when handle 5 promotes energy storage part 12, make energy storage part 12 separate with movable contact block 10, moving contact 11 quick-make under the effect of touch spring 18, thus the closing time of dynamic/static contact shortened.In addition, compare with tradition, increased the rotational angle of moving contact 11, also strengthened simultaneously the distance of opening of circuit breaker, when circuit breaker because of manually or during the fault disjunction, touch spring 18 and return spring 19 discharge potential energy, dynamic/static contact is disjunction rapidly, elongating arc extinguishes it rapidly, has prolonged the life-span of circuit breaker.
Claims (10)
1. high breaking energy storage twin shaft miniature circuit breaker, comprise the housing with clamp and be arranged at operating mechanism in the inner chamber, instantaneous release, bimetal leaf, run-on tab and arc control device, it is characterized in that: described operating mechanism comprises handle, tripping by connecting rod and the interlock of described handle, the snap close meshing with described tripping, lever, be provided with movable contact block and the energy storage part of moving contact, truck dead lever axle and contact axle between the both sides inwall of described housing, hinged torsion spring successively on described lever shaft, described energy storage part, described lever and described snap close, place latch spring in the groove of described snap close, described movable contact block is hinged on the described contact axle, be provided with spring link between described lever and the described movable contact block, described spring link overcoat has touch spring, described operating mechanism also comprises a return spring, one end of described return spring is fixed in described lever, the other end of described return spring is fixed in the yoke in the described instantaneous release, described energy storage part comprises first terminal and the second end, described handle is provided with jut, described the first end cooperates interlock with described jut, described movable contact block is provided with gengon, and described gengon is in order to be limited in the rotation of described the second end under the described jut effect.
2. high breaking energy storage twin shaft miniature circuit breaker according to claim 1, it is characterized in that: described snap close is provided with arc groove, be fixed with draw-bar seat on the described housing, described draw-bar seat is provided with annular breach, described two golden pull bar has hook portion and pushed section, and described hook portion and described pushed section are set up in respectively described arc groove and described annular breach.
3. high breaking energy storage twin shaft miniature circuit breaker according to claim 1 and 2, it is characterized in that: described housing offers the first row pore in the back position, top that is positioned at described arc control device, and described housing offers the second row pore in the back position, bottom that is positioned at described arc control device.
4. high breaking energy storage twin shaft miniature circuit breaker according to claim 1 and 2, it is characterized in that: described fixed contact is positioned on the fixed contact arc, described fixed contact arc extends to the top of arc control device, and described fixed contact arc and described run-on tab are circular-arc.
5. high breaking energy storage twin shaft miniature circuit breaker according to claim 3, it is characterized in that: described fixed contact is positioned on the fixed contact arc, described fixed contact arc extends to the top of arc control device, and described fixed contact arc and described run-on tab are circular-arc.
6. high breaking energy storage twin shaft miniature circuit breaker according to claim 1 and 2, it is characterized in that: in the both sides of described fixed contact arc, with described housing both sides inwall flash barrier is set abreast, described flash barrier adopts aerogenesis arc extinguishing plastics, and described flash barrier is provided with multiple tracks groove and convex tendon.
7. high breaking energy storage twin shaft miniature circuit breaker according to claim 3, it is characterized in that: in the both sides of described fixed contact arc, with described housing both sides inwall flash barrier is set abreast, described flash barrier adopts aerogenesis arc extinguishing plastics, and described flash barrier is provided with multiple tracks groove and convex tendon.
8. high breaking energy storage twin shaft miniature circuit breaker according to claim 4, it is characterized in that: in the both sides of described fixed contact arc, with described housing both sides inwall flash barrier is set abreast, described flash barrier adopts aerogenesis arc extinguishing plastics, and described flash barrier is provided with multiple tracks groove and convex tendon.
9. high breaking energy storage twin shaft miniature circuit breaker according to claim 6 is characterized in that: between described flash barrier and described housing both sides inwall magnetic conductive board is set.
10. high breaking energy storage twin shaft miniature circuit breaker according to claim 7 is characterized in that: between described flash barrier and described housing both sides inwall magnetic conductive board is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220142791 CN202651014U (en) | 2012-03-31 | 2012-03-31 | High breaking energy storage dual-axis miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220142791 CN202651014U (en) | 2012-03-31 | 2012-03-31 | High breaking energy storage dual-axis miniature circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN202651014U true CN202651014U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220142791 Expired - Lifetime CN202651014U (en) | 2012-03-31 | 2012-03-31 | High breaking energy storage dual-axis miniature circuit breaker |
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| Country | Link |
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| CN (1) | CN202651014U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN103839736A (en) * | 2013-11-15 | 2014-06-04 | 宏秀电气有限公司 | Small-sized null line breaker |
| CN107039216A (en) * | 2017-06-19 | 2017-08-11 | 厦门宏发开关设备有限公司 | A kind of residual current action breaker fast closing mechanism |
-
2012
- 2012-03-31 CN CN 201220142791 patent/CN202651014U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN103839736A (en) * | 2013-11-15 | 2014-06-04 | 宏秀电气有限公司 | Small-sized null line breaker |
| CN107039216A (en) * | 2017-06-19 | 2017-08-11 | 厦门宏发开关设备有限公司 | A kind of residual current action breaker fast closing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |