CN202585283U - Resetting mechanism for double-breakpoint breaker - Google Patents
Resetting mechanism for double-breakpoint breaker Download PDFInfo
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- CN202585283U CN202585283U CN 201220109856 CN201220109856U CN202585283U CN 202585283 U CN202585283 U CN 202585283U CN 201220109856 CN201220109856 CN 201220109856 CN 201220109856 U CN201220109856 U CN 201220109856U CN 202585283 U CN202585283 U CN 202585283U
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Abstract
Disclosed is a resetting mechanism for a double-breakpoint breaker, comprising a U-shaped jump fastener, wherein two side arms of the jump fastener are installed to the inner side of two side plates in a rotating manner; and the jump fastener cooperates with a transmission mechanism and a release mechanism of the breaker. The resetting mechanism is characterized by further comprising a return spring running through a locating shaft, wherein the locating shaft is fixed between the two side plates; the return spring is formed by connecting two torsion springs; the connecting section of the two torsion springs, as a fixed end of the return spring, is restricted upon a fixed plane; and two leg portions of the return spring are connected with the two side arms of the jump fastener. In the resetting mechanism for a double-breakpoint breaker, the jump fastener and the return spring are arranged in a non-coaxial manner, and the return spring is formed by two torsion springs, thereby being capable of well cooperating with the two side arms of the jump fastener. While the normal operation of the mechanism is ensured, the pressure of the contact system and the pulling force of the main extension spring are not increased, with the breaking speed of a plastic shell type breaker being accelerated.
Description
Technical field
The utility model relates to the low-voltage electrical apparatus field, particularly a kind of resetting device of dual-interruption point breaker.
Background technology
For existing mold cased circuit breaker main machine frame, generally constitute by parts such as side plate, tiller, last connecting rod, lower link, tripping part spare, draw bar, snap close piece, locating shafts, this is known shared in industry.So; Under the situation of guaranteeing main machine frame regular event, confined space size (perhaps increasing contact pressure) because of the temperature rise that reduces circuit breaker; Through the reset speed of quickening breaker mechanism, and then breaking capacity, the electrical endurance of raising circuit breaker become the emphasis of expert's research.
The principal element that influences the breaker mechanism breaking speed has following several respects: the size of mechanism rod system is distributed; The size of main extension spring pulling force, the pressure of contact system etc.Wherein main extension spring offers the actuating force that main machine frame breaks off; Can improve the opening speed of main machine frame through the effective pull that increases main extension spring; But this pulling force is crossed the power of the button again increase that conference causes mechanism; Thereby increase electronic behaviour's power or manually grasped power, operation inconvenience, limited mechanism's bulk has determined limited pulling force simultaneously; Also can increase the restoring force of mechanism's tripping part through the pressure that reduces the contact system moving contact, and then improve the opening speed of main machine frame, but the pressure of contact system is too small, can increase the temperature rise of circuit breaker, the electrical endurance of reduction circuit breaker.
Chinese patent CN102034652A discloses a kind of operating mechanism of breaker of plastic casing; It comprises handle, main extension spring, snap close piece, buckles, goes up connecting rod, lower link and moving contact system, comprises that also one quickens break-up device, and this acceleration break-up device comprises tripping part (veneer), tripping part rotating shaft, energy-stored spring; What the tripping part rotated is installed on the tripping part rotating shaft; One end of the energy-stored spring fixedly other end is connected on the tripping part, and this energy-stored spring is single torsion spring and is located on the tripping part rotating shaft that the center of rotation of this energy-stored spring is identical with the center of rotation of tripping part; Energy-stored spring is positioned at a side of tripping part; Only shown single-breakpoint molded case circuit breaker, its weak point is: required part is more, because of the space of single-breakpoint molded case circuit breaker is easy to greatly realize; The breaker with double breaks and plastic case space is less relatively, realizes relatively difficulty.Have in a breaker of plastic casing product of GE (General Electric) company and quicken disjunction mechanism; Comprise tripping part (veneer), U type transmission levers, single torsion spring; U type drive link links to each other with tiller, and U type drive link, the shared rotating shaft of tripping part rotate around it, and this list torsion spring is located on this rotating shaft; This structure can also provide a power can be in reset mode to guarantee tiller to tiller except having the function of quickening disjunction; The pivot of tripping part, U type transmission levers, single torsion spring three parts is concentric, and its weak point is: single torsion spring and tiller in this structure influence each other, and have weakened the reset response power of single torsion spring to the tripping part, make the disjunction effect remarkable inadequately; And structure is complicated, the assembling difficulty, and cost is higher, and production efficiency is lower.Therefore, need a kind of new dual-interruption point breaker mechanism, under the normal situation of assurance mechanism, can not increase the pressure of contact system, the pulling force of main extension spring, can quicken the opening speed of breaker mechanism again, and simple in structure, and cost is lower, is easy to produce.
The utility model content
The utility model problem to be solved provides a kind of resetting device of dual-interruption point breaker; Under the normal situation of assurance mechanism; Can not increase the pressure of contact system, the pulling force of main extension spring, can accelerate the opening speed of mechanism again, reduce the number of parts of resetting device simultaneously; Be convenient to assembling, overcome the problems referred to above that exist in the prior art.
The resetting device of a kind of dual-interruption point breaker of the utility model; Comprise U type tripping part; The two side arms of tripping part is rotatably installed in the inboard of biside plate, and said tripping part matches with transmission mechanism, the tripping mechanism of circuit breaker, also comprises being applied in a back-moving spring on the locating shaft; Said locating shaft is fixed between said biside plate; Said back-moving spring is formed by connecting two torsion springs, and the connecting portion of two torsion springs is spacing on a stationary plane as the stiff end of back-moving spring, and two shanks of said back-moving spring link to each other with the two side arms of said tripping part.The back-moving spring that adopts torsion spring to constitute links to each other two shanks of back-moving spring with tripping part two side arms, make tripping part stress balance; Can quicken resetting of tripping part; Improve the breaking speed of mechanism, and back-moving spring is fixed on the locating shaft rotating shaft decentraction with the tripping part, is easy to independent installation; And make full use of the inner space of dual-interruption point breaker, be easy to produce.
The end of the said tripping part of the utility model two side arms respectively is provided with a confined planes, and when said tripping mechanism was in the trip free state, confined planes contacted with said locating shaft.
The inboard of the said tripping part of the utility model two side arms is equipped with a protruding arm, and the shank of said back-moving spring links to each other with said protruding arm.
The end of the said protruding arm of the utility model bends downwards and constitutes a kink, and the shank of said back-moving spring is conflicted in the inside of said kink.
The connecting portion of said two torsion springs of the utility model is fixed on the single cartridge bodies of said circuit breaker.
The connecting portion and the said biside plate of said two torsion springs of the utility model are fixedly linked.
The said tripping part of the utility model comprises a two side arms and a transverse part, and the end face of said two side arms is provided with inner sunken face, and the inboard of said two side arms is equipped with a bearing pin, and the downside of said transverse part is provided with a boss, and the upside of transverse part is provided with a flanging.
The said transmission mechanism of the utility model comprises tiller, first connecting rod, second connecting rod, driving spring; Said tiller is rotatably connected on the said biside plate; Driving shaft on the said tiller can move along the inner sunken face on the said tripping part two side arms; One end of said first connecting rod and the rotating shaft of moving contact of breaker are hinged, and the other end of said first connecting rod is hinged through an end of connecting axle and said second connecting rod, and the pivot pin on the other end of second connecting rod and the said tripping part two side arms is hinged; One end of said driving spring links to each other with said tiller, and the other end of said driving spring links to each other with said connecting axle.
The said snap close piece of the utility model mechanism comprises snap close piece, traction lever; Said snap close piece and traction lever are respectively through the rotating inboard that is connected biside plate of alignment pin; Snap close piece is provided with a slotted hole that supplies the flanging insertion of tripping part, and the bottom of snap close piece is provided with a projection flange that can contact with the boss of said tripping part.
Through above technical scheme; The resetting structure of the dual-interruption point breaker of the utility model, the not coaxial setting of its tripping part and back-moving spring, and back-moving spring is a torsion spring; Can well cooperate with the two side of tripping part; Under the normal situation of assurance mechanism, can not increase the pressure of contact system, the pulling force of main extension spring, can quicken the opening speed of mold cased circuit breaker again.The utlity model has following advantage: 1.. help quickening the breaking speed of breaker mechanism; 2.. help improving the breaking capacity and the electrical endurance of circuit breaker; 3.. simple in structure, when the resetting device of design the utility model, make full use of the inner space of dual-interruption point breaker, be convenient to assembling.
Description of drawings
Fig. 1 is the structural representation of the utility model dual-interruption point breaker resetting device first embodiment.
Fig. 2 is the structural representation of tripping part among the utility model dual-interruption point breaker resetting device first embodiment.
Fig. 3 is the structural representation of reduction torsion spring among the utility model dual-interruption point breaker resetting device first embodiment.
Fig. 4 is the assembling sketch map of the utility model dual-interruption point breaker resetting device and other main parts size.
Fig. 5 is the view of the utility model dual-interruption point breaker resetting device when trip free (TRIPPED).
Fig. 6 is the view of the utility model dual-interruption point breaker resetting device when breaking off (OFF) or detaining (RE-TRIP) again.
Fig. 7 is the view of the utility model dual-interruption point breaker resetting device when closed (ON).
Fig. 8 is the structural representation of the utility model dual-interruption point breaker resetting device second embodiment.
Fig. 9 is the structural representation of reduction torsion spring among the utility model dual-interruption point breaker resetting device second embodiment.
Among the figure, 1, tiller; 2, snap close piece; 3, traction lever; 4, driving shaft; 5, side plate; 6, the tripping part; 7, back-moving spring; 8, unit box; 9, first connecting rod; 10, second connecting rod; 11, driving spring; 12, locating shaft; 13, bearing pin; 14, rotating shaft; 15, pivot pin; 16, fixed contact; 17, moving contact.
Embodiment
Embodiment one
Like Fig. 1, shown in Figure 4; A kind of dual-interruption point breaker resetting device of the utility model, this mechanism comprises U type tripping part 6, the two side arms of tripping part 6 is rotatably installed in the inboard of biside plate 5; Tripping part 6 matches with transmission mechanism, the tripping mechanism of circuit breaker; Also comprise being applied in a back-moving spring 7 on the locating shaft 12, locating shaft 12 is fixed on 5 of biside plates, and back-moving spring 7 is formed by connecting two torsion springs 71; As shown in Figure 3; The connecting portion 73 of two torsion springs is spacing on a stationary plane as the stiff end of back-moving spring, and the connecting portion 73 of two torsion springs as shown in Figure 4 is fixed on the single cartridge bodies 8 of circuit breaker, and two shanks 72 of back-moving spring 7 link to each other with the two side arms of tripping part 6; Two shanks 72 of back-moving spring are bending structure and below and its conflict that extends to tripping part two side arms, and the back-moving spring 7 after the assembling is symmetrically located at the inboard of tripping part 6.Adopt the breaking speed that comes acceleration mechanism with the back-moving spring of tripping part disalignment setting, this back-moving spring is a torsion spring, and its two shank can cooperate with the two side arms of tripping part, makes tripping part stress balance, has solved resetting fast to U type tripping part; The installation of this resetting device neither influences the normal operation of circuit breaker transmission mechanism, has also guaranteed resetting fast of tripping part, has solved the narrow and small problem that is difficult to install setting in dual-interruption point breaker space.
As shown in Figure 2, above-mentioned tripping part 6 is the U type, is cold-stamped part; Be stamped to form through blanking, punching, moulding, it comprises a two side arms 61 and a transverse part 62, and the end face of two side arms 61 is provided with inner sunken face 613; Driving shaft when handle rotates on the handle moves along this inner sunken face 613; The end of two side arms 61 is respectively equipped with a circular hole 611, wear a bearing pin 13 in the circular hole 611 and make tripping part 6 and biside plate 5 (see figure 4) that is rotationally connected, and the bottom of two side arms 61 respectively is provided with a confined planes 614; When tripping mechanism was in the trip free state, confined planes 614 contacted with locating shaft 12; The inboard of tripping part two side arms 61 respectively is provided with a pivot pin 612, the stepped ramp type cylinder that pivot pin 612 successively decreases for the external diameter that passes through successively, and the end that the pivot pin external diameter is little is fixed on the two side arms, and pivot pin 612 and last connecting rod 10 are hinged.The downside of tripping part transverse part 62 is provided with a boss 622, and the upside of transverse part 62 is provided with a flanging 621.
As shown in Figure 4; The transmission mechanism of above-mentioned circuit breaker comprises tiller 1, first connecting rod 9, second connecting rod 10, driving spring 11; Tiller 1 is rotatably connected on the biside plate 5; Driving shaft 4 is connected on the tiller 1 through locating part is rotating, can move along the inner sunken face 613 on the above-mentioned tripping part two side arms 61 at driving shaft 4 under the driving of tiller 1, and an end of first connecting rod 9 and the rotating shaft 14 of moving contact of breaker 17 are hinged; The other end of first connecting rod 9 is hinged with an end of second connecting rod 10 through connecting axle 15; Pivot pin 612 on the other end of second connecting rod 10 and the tripping part medial surface is hinged, and an end of above-mentioned driving spring 11 links to each other with tiller 1, and the other end of driving spring 11 links to each other with connecting axle 15.
The tripping mechanism of above-mentioned circuit breaker specifically comprises snap close piece 2, traction lever 3; Snap close piece 2 and traction lever 3 are respectively through the rotating inboard that is connected biside plate 5 of alignment pin; Snap close piece 2 is provided with a slotted hole that supplies flanging 621 insertions of above-mentioned tripping part 6; The bottom of snap close piece 2 is provided with a projection flange that can contact with the boss 622 of tripping part; In breaker mechanism snap close piece process, the boss 622 on the tripping part 6 can be pressed on the projection flange of snap close piece, and the flanging 621 on the tripping part can insert in the slotted hole of snap close piece 2.Contact realization with the end face of slotted hole through flanging 621 and fasten, therefore the contact on two planes has strengthened buckling surface.Biside plate 5 is fixed on the unit box 8, and fixed contact 16, moving contact 17 all are positioned at the inside of unit box 8.
The course of work of the resetting device of present embodiment dual-interruption point breaker is:
As shown in Figure 5, the circuit breaker dynamic/static contact is in separated position, and tiller 1 is under the effect of driving spring 11 pulling force, and driving shaft 4 limits are on the inner sunken face 613 of above-mentioned tripping part two side arms, and tiller 1 is in mechanism's drop-away reset state; Two shanks 72 on the back-moving spring 7 are limit respectively below the two side arms of tripping part 6, and at this moment, back-moving spring 7 offers 6 one initial torques of tripping part (counterclockwise) M1.
As shown in Figure 6; Tiller 1 turns clockwise under manual or electronic driving, and driving shaft 4 can be attached on the above-mentioned inner sunken face 613 is pressing tripping part 6 to clockwise rotate; Boss 622 on the tripping part 6 is pressed in and is pushing away snap close piece 2 on the above-mentioned projection flange and rotate counterclockwise; Traction lever 3 is rotated counterclockwise simultaneously, and after tiller 1 was pulled the final position, the flanging 621 on the tripping part was buckled on the snap close piece 2; At this moment, under tripping part 6 clockwise pressure, it is M2 (counterclockwise) that the torque of back-moving spring 7 increases to maximum, this process, and tripping part 6 is accomplished snap close with snap close piece 2, makes back-moving spring accomplish energy storage.
As shown in Figure 7, rotate counterclockwise tiller 1, because tripping part 6 can not rotate for the snap close state; Under the effect of driving spring 11 pulling force, the pivot pin 612 of second connecting rod 10 on above-mentioned tripping part turns clockwise, and drives first connecting rod 9 simultaneously; First connecting rod 9 is pushing away moving contact 17 motions, and finally moving moving contact 17 is closed fully with fixed contact 16, and mechanism accomplishes closing operation; At this moment, the torque of back-moving spring 7 is constant still is M2 (counterclockwise).This process, tripping part 6, snap close piece 2 and back-moving spring 7 remain unchanged, and the energy storage of back-moving spring 7 still is in maximum M2.The back-moving spring in this resetting device and the motion of tiller are irrelevant; Stressed the pulling force with driving spring of tiller is relevant, and back-moving spring only receives the influence of tripping part, therefore; The reset response of back-moving spring only acts on the tripping part, is beneficial to resetting of mechanism.The tiller 1 that turns clockwise again, tripping part 6 is the snap close state still, when tiller forwarded the final position to, mechanism got back to off-state and accomplishes sub-switching operation with shown in Figure 6.
When circuit breaker is in closure state as shown in Figure 7, press the SR (not shown), when SR promotion traction lever 3 clockwise rotates certain angle; Snap close piece 2 is triped and is turned clockwise, and then the flanging 621 and snap close piece 2 releases of above-mentioned tripping part, at this moment; Tripping part 6 increases the degree of freedom of a rotation, under the effect of driving spring 11 pulling force, adds the Max. torque M2 (counterclockwise) of upper reset spring 7 simultaneously; Tripping part 6 is rotated counterclockwise fast, and drives second connecting rod 10, first connecting rod 9, moving contact 17 motions, make dynamic and static contact separate fast; Circuit breaker is converted to trip status as shown in Figure 5, realizes the disjunction of circuit breaker.The moment of torsion of the back-moving spring 7 of this resetting device self all acts on the tripping part, makes the reset speed of tripping part improve several times, and can shorten the arcing time, helps to improve breaking capacity and electrical endurance; If remove after the back-moving spring 7, apply same action, the speed that dynamic and static contact separates is slack-off, in addition may occur being regardless of, phenomenon that mechanism does not reset.
The operation principle of the utility model is: this resetting device is applied to dual-interruption point breaker, and the tripping 6 of this dual-interruption point breaker is the tripping of U type, and back-moving spring 7 is fixed on 5 of biside plates, and it is independently installed but need not set up its installing space.And in breaker open operation, combined floodgate motion process, tripping part 6 remains the snap close state with snap close piece 22, and back-moving spring 7 remains at the energy storage state, and spring force acts in the tripping.Because tripping is fixed; The active force of back-moving spring can not influence the operating physical force of tiller; This resetting device only makes tripping reset fast; Result's contrast through simulation analysis can know, increase this resetting device after, the drop-away time of mechanism (not considering the influence of electrodynamic repulsion force) shortens about 15% relatively.
Embodiment two
Structure in the present embodiment is basic identical with embodiment one, difference with present embodiment in the concrete structure of back-moving spring, and the fit structure of back-moving spring and tripping.Like Fig. 8, shown in Figure 9, back-moving spring 7 is formed by connecting two torsion springs 71, compares with the back-moving spring among the embodiment one, and two shanks 72 of this back-moving spring are linear pattern, and all the other structures are identical with embodiment one.Correspondingly; The also corresponding change of the concrete structure of tripping 6; The inboard of tripping part 6 two side arms is equipped with a protruding arm 615, and the end of protruding arm 615 bends downwards and constitutes a kink 616, and the shank 72 of back-moving spring 7 is fastened on the inside (all the other structures are said with embodiment 1) of kink.Two shanks, 72 limits of back-moving spring are in the inside of 6 liang of kinks of tripping part, and the connecting portion 71 of two torsion springs is against on the unit box 8.Its operation principle is said with embodiment one, gives unnecessary details no longer one by one at this.
The connecting portion 73 of two torsion springs among the foregoing description one and the embodiment two can be against on the unit box 8, also can be fixed on the biside plate 5.
More than dual-interruption point breaker resetting device that the utility model embodiment is provided carried out detailed introduction; For one of ordinary skill in the art; Thought according to the utility model embodiment; On embodiment and range of application, all can change to some extent; Therefore this description only is used for should not be construed as the restriction to the utility model in the utility model embodiment is described, and all any changes of being made according to the utility model design philosophy are all within the protection range of the utility model.
Claims (9)
1. the resetting device of a dual-interruption point breaker; Comprise U type tripping part (6), the two side arms (61) of tripping part (6) is rotatably installed in the inboard of biside plate (5), and said tripping part (6) matches with transmission mechanism, the tripping mechanism of circuit breaker; It is characterized in that; Also comprise the back-moving spring (7) that is applied on the locating shaft (12), said locating shaft (12) is fixed between said biside plate (5), and said back-moving spring (7) is formed by connecting two torsion springs (71); The connecting portion of two torsion springs (73) is spacing on a stationary plane as the stiff end of back-moving spring, and two shanks (72) of said back-moving spring link to each other with the two side arms (61) of said tripping part.
2. the resetting device of dual-interruption point breaker according to claim 1; It is characterized in that; The end of said tripping part two side arms (61) respectively is provided with a confined planes (614), and when said tripping mechanism was in the trip free state, confined planes (614) contacted with said locating shaft (12).
3. the resetting device of dual-interruption point breaker according to claim 1 is characterized in that, the inboard of said tripping part two side arms (61) is equipped with a protruding arm (615), and the shank of said back-moving spring (72) links to each other with said protruding arm (615).
4. the resetting device of dual-interruption point breaker according to claim 3 is characterized in that, the end of said protruding arm (615) bends downwards and constitutes a kink (616), and the shank of said back-moving spring (72) is conflicted in the inside of said kink (616).
5. the resetting device of dual-interruption point breaker according to claim 1 is characterized in that, the connecting portion of said two torsion springs (73) is fixed on the single cartridge bodies (8) of said circuit breaker.
6. the resetting device of dual-interruption point breaker according to claim 1 is characterized in that, the connecting portion of said two torsion springs (73) is fixedly linked with said biside plate (5).
7. the resetting device of dual-interruption point breaker according to claim 1; It is characterized in that; Said tripping part (6) comprises a two side arms (61) and a transverse part (62), and the end face of said two side arms (61) is provided with inner sunken face (613), and the medial surface of said two side is equipped with a pivot pin (612); The downside of said transverse part (62) is provided with a boss (622), and the upside of transverse part (62) is provided with a flanging (621).
8. the resetting device of dual-interruption point breaker according to claim 7; It is characterized in that; Said transmission mechanism comprises tiller (1), first connecting rod (9), second connecting rod (10), driving spring (11); Said tiller (1) is rotatably connected on the said biside plate (5), and the driving shaft on the said tiller (3) can be along the motion of the inner sunken face (613) on the said tripping part two side arms, and the rotating shaft (14) of an end of said first connecting rod (9) and moving contact of breaker is hinged; The other end of said first connecting rod (9) is hinged with an end of said second connecting rod (10) through connecting axle (15); Pivot pin (612) on the other end of second connecting rod (10) and the said tripping part two side arms is hinged, and an end of said driving spring (11) links to each other with said tiller (1), and the other end of said driving spring (11) links to each other with said connecting axle (15).
9. the resetting device of dual-interruption point breaker according to claim 7; It is characterized in that; Said snap close piece mechanism comprises snap close piece (2), traction lever (3); Said snap close piece (2) and traction lever (3) are respectively through the rotating inboard that is connected biside plate (5) of alignment pin, and snap close piece (2) is provided with a slotted hole that supplies flanging (621) insertion of tripping part, and the bottom of snap close piece (2) is provided with a projection flange that can contact with the boss (622) of said tripping part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220109856 CN202585283U (en) | 2012-03-22 | 2012-03-22 | Resetting mechanism for double-breakpoint breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220109856 CN202585283U (en) | 2012-03-22 | 2012-03-22 | Resetting mechanism for double-breakpoint breaker |
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| CN202585283U true CN202585283U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220109856 Expired - Fee Related CN202585283U (en) | 2012-03-22 | 2012-03-22 | Resetting mechanism for double-breakpoint breaker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325629A (en) * | 2012-03-22 | 2013-09-25 | 上海良信电器股份有限公司 | Reset mechanism of dual-breakpoint breaker |
| CN109616385A (en) * | 2018-12-25 | 2019-04-12 | 浙江零壹智能电器研究院有限公司 | Miniature circuit breaker operating mechanism |
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
-
2012
- 2012-03-22 CN CN 201220109856 patent/CN202585283U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325629A (en) * | 2012-03-22 | 2013-09-25 | 上海良信电器股份有限公司 | Reset mechanism of dual-breakpoint breaker |
| CN103325629B (en) * | 2012-03-22 | 2016-08-03 | 上海良信电器股份有限公司 | The resetting-mechanism of dual-interruption point breaker |
| CN109616385A (en) * | 2018-12-25 | 2019-04-12 | 浙江零壹智能电器研究院有限公司 | Miniature circuit breaker operating mechanism |
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20210322 |
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| CF01 | Termination of patent right due to non-payment of annual fee |