CN202957195U - Modular spring operating device and vacuum circuit breaker - Google Patents
Modular spring operating device and vacuum circuit breaker Download PDFInfo
- Publication number
- CN202957195U CN202957195U CN201220473328.1U CN201220473328U CN202957195U CN 202957195 U CN202957195 U CN 202957195U CN 201220473328 U CN201220473328 U CN 201220473328U CN 202957195 U CN202957195 U CN 202957195U
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- operating device
- energy
- installing rack
- springs operating
- modular springs
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Abstract
The utility model discloses a modular spring operating device comprising a device installing rack, an energy storage spring and a driving motor set and also comprising a rotating shaft and a swing arm part. The rotating shaft is rotatably arranged on the device installing rack and is equipped with a rotating gear in meshing with the driving motor set directly and a cam used for outputting power, and the swing arm part is arranged on the rotating shaft and is rotated along with the rotating shaft; one end of the energy storage spring is connected with the device installing rack and the other end is connected with a rotatable part of the swing arm part, and the cam is arranged on the rotating shaft, is rotated along with the rotating shaft and outputs power outwards. The rotating shaft can be rotatably arranged on the device installing rack and is in direct meshing with the driving motor set, so that a steering gear set mechanism in the prior art is saved, and accordingly, the purpose of simplifying the structure of the modular spring operating device is achieved. The utility model also provides a vacuum circuit breaker. The vacuum circuit breaker comprises a vacuum bubble contactor and also comprises the above modular spring operating device used for closing the vacuum circuit breaker.
Description
Technical field
The utility model relates to the breaker apparatus technical field, more particularly, and particularly a kind of modular springs operating device and a kind of vacuum circuit-breaker.
Background technology
Vacuum circuit-breaker is a kind of electric component with control function and overload protection function, because the dielectric in contact gap behind its arc-extinguishing medium and the arc extinguishing all is that high vacuum is gained the name.The vacuum short-circuiting device have volume little, lightweight, be applicable to the advantages such as frequent operation, arc extinguishing need not overhaul, in power distribution network, use comparatively universal.
In vacuum circuit-breaker, include the vacuum bubbles contact and for the operating mechanism of controlling the vacuum bubbles contact, in the prior art, use comparatively generally spring operation.
A kind of typical spring operation comprises: mounting panel, spring energy-storage assembly and electric drive system, electric drive system comprises motor, driving shaft and cam, cam is installed on the driving shaft, and motor is by commutating tooth wheels control drive shaft turns, thus so that cam rotation.Because motor has also added the commutating tooth wheels in the process that driving cam rotates, can cause undoubtedly the spring operation structure comparatively complicated, increased the complexity of spring operation installation, maintenance.
A kind of typical spring operation comprises: mounting panel, spring energy-storage assembly and electric drive system, electric drive system comprises motor, output shaft and gear, gear is installed on the output shaft, motor rotates by the rotating shaft that swing arm parts and cam are equipped with in the control of commutating tooth wheels, realizes spring energy-storage and energy is discharged into linkage by cam being delivered to the breaker vacuum bulb contact again.Because motor has also added the commutating tooth wheels in the process that driving cam rotates, can cause undoubtedly the spring operation structure comparatively complicated, increased the complexity of spring operation installation, maintenance.There is the too heavy problem of manual energy-storage operating power in the mechanism that has, and perhaps the problem of sensitive switch wiring inconvenience also needs to prepare push pedal when perhaps hand push button operates trip gear, perhaps overhauls the undesirable parts such as dismounting and change inconvenience.
In sum, how to simplify the structure of spring operation, convenient in Installation and Debugging and Maintenance and Repair, become the problem that those skilled in the art need to solve.
The utility model content
The technical problems to be solved in the utility model is for providing a kind of modular springs operating device and a kind of vacuum circuit-breaker, this modular springs operating device is installed on this vacuum circuit-breaker, and this modular springs operating device has advantage simple in structure by its structural design.
For solving the problems of the technologies described above, the utility model provides a kind of modular springs operating device, is installed on to be used in the circuit breaker carrying out the operation of separating brake, combined floodgate, comprises device installing rack, energy-stored spring and drive motors group, also comprises:
Be arranged at rotationally the rotation axis on the described device installing rack, be provided with on the described rotation axis directly and the transmitting gear of described drive motors group engagement and the cam of exporting for power;
Being arranged at also can be with the swing arm parts of described rotation axis rotation on the described rotation axis, and an end of described energy-stored spring is connected with described device installing rack, and the other end of described energy-stored spring is connected with the pivotable parts of described swing arm parts.
Preferably, described drive motors group comprises drive motors and deboost axle, described drive motors comprises output shaft, be provided with driven wheel on the described deboost axle, described driven wheel has endoporus, an end of described endoporus and described deboost axle key connecting, and the other end of described endoporus is equipped with unidirectional needle bearing, described output shaft is inserted in the described needle bearing, driven wheel and the engagement of described transmitting gear.
Preferably, the utility model also comprises Manual stored energy organization, described Manual stored energy organization comprises bevel gear wheel and the bevel pinion that meshes with described bevel gear wheel, described bevel gear wheel is arranged on the described deboost axle, also be provided with the spindle nose that rotates for driver on the described bevel pinion, described spindle nose is arranged on the bearing support rotationally, and bearing support uses screw attachment again on described installing rack.
Preferably, also be provided with the energy storage indication component on the described device installing rack, described energy storage indication component comprises sensitive switch, turns the pendulum indicating device, and described swing arm parts can promote to turn the pendulum indicating device, but turns pendulum indicating device and described sensitive switch butt.
Preferably, also be provided with on the described device installing rack the described pendulum indicating device that turns is carried out the locating part of rotary spacing.
Preferably, described locating part is screw.
Preferably, be provided be used to the control assembly that carries out separating brake or closing operation on the described device installing rack, described control assembly comprises solenoid controlled device and hand push button parts, described solenoid controlled device comprises solenoid and the iron core that is arranged in the described solenoid, described hand push button parts comprise can with the button spindle of described iron core butt, described button spindle and described iron core are oppositely arranged.
Preferably, described button spindle is the diamagnetic material button spindle.
The utility model also provides a kind of vacuum circuit-breaker, comprises the vacuum bubbles contact, also comprises aforesaid modular springs operating device, and the cam of described modular springs operating device links to each other with described vacuum bubbles contact.
Preferably, the vacuum circuit-breaker that the utility model provides also comprises transmission connecting rod mechanism, and described cam links to each other with described vacuum bubbles contact by described transmission connecting rod mechanism.
The utility model provides a kind of modular springs operating device, is installed on to be used in the circuit breaker carrying out the operation of separating brake, combined floodgate, comprises device installing rack, energy-stored spring and drive motors group.The device installing rack be used for to be installed other assembly of the spring-operated device of composition moduleization, and energy-stored spring can be in effect lower compression or the stretching of drive motors group, is the potential energy of energy-stored spring with the kinetic transformation of drive motors group.The utility model also comprises: be arranged at rotationally the rotation axis on the device installing rack, be provided with on the rotation axis directly and the transmitting gear of drive motors group engagement and the cam of exporting for power; Being arranged at also can be with the swing arm parts of rotation axis rotation on the rotation axis, and an end of energy-stored spring is connected with the device installing rack, and the other end of energy-stored spring is connected with the pivotable parts of swing arm parts.
Rotation axis drives the transfer parts that energy-stored spring moves as the drive motors group, is connected with energy-stored spring by the swing arm parts are set.One end of swing arm parts is used for being connected with energy-stored spring, and its other end is connected with rotation axis.Open when the drive motors group, rotation axis can drive the swing arm parts and rotate, and the axis that the end that the swing arm parts are used for being connected with energy-stored spring centers on rotation axis rotates, thereby realizes stretching or compression to energy-stored spring, finishes the energy storage of energy-stored spring.
Cam is arranged on the rotation axis, can rotate and external outputting power (cam rotates, and can drive the external impetus equipment moving) with rotation axis.Rotation axis is arranged at rotationally on the device installing rack and with the drive motors group and directly meshes, and has so omitted commutating tooth wheels mechanism in the prior art, thereby reaches the purpose of simplifying modular springs operating device structure.
The modular springs operating device that the utility model provides, by the connected mode that adopts rotation axis and drive motors group directly to mesh, the structure of modular springs operating device has been simplified in the setting that can omit the commutating tooth wheels.
The utility model also provides a kind of vacuum circuit-breaker, comprises the vacuum bubbles contact, also comprises aforesaid modular springs operating device, and the cam of modular springs operating device links to each other with the vacuum bubbles contact, and cam rotates the combined floodgate that can realize vacuum circuit-breaker.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation of modular springs operating device among a kind of embodiment of the utility model;
Fig. 2 is the structural representation that a points to the modular springs operating device among Fig. 1;
Fig. 3 is the structural representation that b points to the modular springs operating device among Fig. 1;
Fig. 4 is the structural representation that c points to the modular springs operating device among Fig. 1;
The corresponding relation of component names and Reference numeral is among Fig. 1 to Fig. 4:
Energy-stored spring 1; Rotation axis 2; Transmitting gear 3; Swing arm parts 4; Drive motors 5;
Deboost axle 6; Manual stored energy organization 7; Locating part 8; Iron core 9; Button spindle 10;
Sensitive switch 11; Turn pendulum indicating device 12; Output shaft 13; Driven wheel 14.
Embodiment
Core of the present utility model is for providing a kind of modular springs operating device and a kind of vacuum circuit-breaker, this modular springs operating device is installed on this vacuum circuit-breaker, in this modular springs operating device, the connected mode that adopts power transmission shaft and drive motors group directly to mesh can be simplified the structure of spring operation.
In order to make those skilled in the art understand better the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation of modular springs operating device among a kind of embodiment of the utility model.
The utility model provides a kind of modular springs operating device, is installed on to be used in the circuit breaker carrying out the operation of separating brake, combined floodgate, comprises device installing rack, energy-stored spring 1 and drive motors group.The device installing rack is used for installing other assembly (comprising energy-stored spring 1 and drive motors group) of the spring-operated device of composition moduleization, energy-stored spring 1 can stretch under the effect of drive motors group, is the potential energy of energy-stored spring 1 with the kinetic transformation of drive motors group.Energy-stored spring 1 can keep lastingly this potential energy and do energy reserve for the realization of the feed motion of circuit breaker in the situation of not doing work.
In order to reach the purpose of simplifying modular springs operating device structure, the utility model has proposed following scheme on the basis of said structure design, the modular springs operating device also comprises: be arranged at rotationally the rotation axis 2 on the device installing rack, be provided with on the rotation axis 2 directly and the transmitting gear of drive motors group engagement and the cam of exporting for power; Being arranged at also can be with the swing arm parts 4 of rotation axis rotation on the rotation axis, and an end of energy-stored spring 1 is connected with the device installing rack, and the other end of energy-stored spring 1 is connected with the pivotable parts of swing arm parts 4.
Cam is arranged on the rotation axis 2, can rotate and external outputting power (cam rotates, and can drive the external impetus equipment moving) with rotation axis 2.Rotation axis 2 is arranged at rotationally on the device installing rack and with the drive motors group and directly meshes, and has so omitted commutating tooth wheels mechanism in the prior art, thereby reaches the purpose of simplifying modular springs operating device structure.
Rotation axis 2 drives the transfer parts that energy-stored spring 1 moves as the drive motors group, is connected with energy-stored spring 1 by swing arm parts 4 are set.In an embodiment of the present utility model, an end of swing arm parts 4 is used for being connected with energy-stored spring 1, and its other end is connected with rotation axis 2.When the unlatching of drive motors group, rotation axis 2 can drive swing arm parts 4 and rotate, and the axis that the end that swing arm parts 4 are used for being connected with energy-stored spring 1 centers on rotation axis 2 rotates, thereby realization is finished the energy storage of energy-stored spring 1 to the stretching of energy-stored spring 1.
The modular springs operating device that the utility model provides, by the connected mode that adopts rotation axis 2 and drive motors group directly to mesh, the structure of modular springs operating device has been simplified in the setting that can omit the commutating tooth wheels.
Particularly, in an embodiment of the present utility model, the drive motors group comprises drive motors 5 and deboost axle 6, drive motors 5 comprises output shaft, be provided with driven wheel on the output shaft, deboost axle 6 and driven wheel key connecting, driven wheel and transmitting gear 3 engagements.The purpose that deboost axle 6 is set is: the output torque that little driven wheel improves transmitting gear (3) is housed, and apply larger active force by rotation axis 2 and 4 pairs of energy-stored springs 1 of swing arm parts, thereby so that energy-stored spring 1 has larger deformation quantity, store larger energy.
Certainly, in another embodiment of the present utility model, can also realize by manual train of reduction gears is set the deceleration energy storage of drive motors 5.
Please in conjunction with Fig. 1 with reference to figure 4, Fig. 4 is the structural representation that c points to the modular springs operating device among Fig. 1.
The drive motors group can realize the electric energy-stored of energy-stored spring 1, in order to realize manual energy storage, the modular springs operating device that the utility model provides also comprises Manual stored energy organization 7, Manual stored energy organization 7 comprises bevel gear wheel and the bevel pinion that meshes with bevel gear wheel, bevel gear wheel is arranged on the deboost axle, also be provided with the spindle nose that rotates for driver on the bevel pinion, spindle nose is arranged at rotationally to be used on the bearing support on the screw attachment auto levelizer installing rack again.By above-described embodiment as can be known, deboost axle 6 is connected with a joggle with rotation axis 2, and deboost axle 6 rotates then is with also corresponding rotation of moving axis 2, therefore, drives deboost axle 6 by drive motors 5 and rotates, and just can realize driving the purpose that rotation axis 2 rotates.So, based on this structural design, rotate the manual energy storage that to realize energy-stored spring 1 as long as can realize manual actuation deboost axle 6.
Manual stored energy organization 7 comprises bevel gear wheel and the bevel pinion that meshes with bevel gear wheel, bevel gear wheel is arranged on the deboost axle, also be provided with the spindle nose that rotates for driver on the bevel pinion, driving bevel gear wheel by bevel pinion rotates, can reduce and drive the active force that bevel pinion rotates, use the universal handle of circuit breaker chassis rocking-turn to finish stored energy operation, feel is light.
As the expansion to said structure, Manual stored energy organization 7 comprises train of reduction gears in the present embodiment, is provided with bearing pin on the input end gear of train of reduction gears, can drive input end gear by bearing pin and rotate.The gear of output end of train of reduction gears connects with the unidirectional needle bearing of deboost axle 6 usefulness, can drive deboost axle 6 and rotate.Reduce the effect that input speed improves output torque because train of reduction gears has, therefore adopting train of reduction gears is the part of Manual stored energy organization 7, feel purpose easily in the time of also can realizing manual operation.
Because the utility model also is provided with the spindle nose that rotates for driver on bevel pinion, use universal handle rocking-turn to finish stored energy operation, do not need special hand rotation handle is set, improve versatility of the present utility model, further simplified structure of the present utility model.
For so that operating personnel understand operating state of the present utility model comparatively intuitively, in the present embodiment, device also is provided with the energy storage indication component on the installing rack, and the energy storage indication component comprises sensitive switch 11, turn pendulum indicating device 12 be subjected to swing arm parts 4 promote can with the contact butt of sensitive switch 11.But turn on the pendulum indicating device labeling energy storage and energy storage indication paper are not arranged, observe by the perforate on the circuit breaker panel, can certainly adopt warning light circuit access sensitive switch contact to carry out the energy storage prompting.Energy storage rear-swing arm parts forward the below to, turn the pendulum indicating device also the next, the butt sensitive switch, and indicating status is energy storage; Spring releases energy during combined floodgate, and swing arm parts moments rotates back into upper, turns the pendulum indicating device and also puts upperly, breaks away from sensitive switch, and indicating status is not energy storage.
Please in conjunction with Fig. 1 with reference to figure 2, Fig. 2 is the structural representation that a points to the modular springs operating device among Fig. 1.
Particularly, device also is provided with the locating part 8 that carries out rotary spacing to turning pendulum indicating device 12 on the installing rack, and limiting component is set, and can to avoid turning pendulum indicating device 12 rotational angles excessive and affect the effect of window observation.
In the utility model, sensitive switch 11 and turn pendulum indicating device 12 and be loaded on first on the welding assembly is installed in welding assembly on the described installing rack with screw again.Turning pendulum indicating device 12 top edges is provided with salient point and promoted and the bottom by swing arm parts 4.The top edge that turns pendulum indicating device 12 is provided with back-moving spring, be used for to guarantee resetting after turning pendulum indicating device 12 presses down, reset to upper.
In an embodiment of the present utility model, locating part 8 is screw, and locating part 8 is threaded with the device installing rack.
Please in conjunction with Fig. 1 with reference to figure 3, Fig. 3 is the structural representation that b points to the modular springs operating device among Fig. 1.
Same as the prior art, the utility model is provided be used to the control assembly that carries out separating brake or closing operation at the device installing rack.Not identical with prior art is: control assembly comprises solenoid controlled device and hand push button parts, the solenoid controlled device comprises solenoid and the iron core 9 that is arranged in the solenoid, the hand push button parts comprise can with the button spindle 10 of iron core 9 butts, button spindle 10 is oppositely arranged with iron core 9.This structural design can so that control assembly both can be subjected to electric control (solenoid and iron core 9 combinations), also can be controlled (hand push button parts) manually.
Particularly, button spindle 10 is the diamagnetic material button spindle.
The utility model can be realized the structure of control assembly: adopt button (by button spindle 10) directly to promote iron core 9 and realize normal manual brake separating, combined floodgate, and need to not install closing by hand push rod and the manual brake separating push rod of special manufacturing additional in combined floodgate switching winding module.This structural design is in the structural design of to a certain degree having simplified the modular springs operating device.
The utility model also provides a kind of vacuum circuit-breaker, comprises the vacuum bubbles contact, also comprises aforesaid modular springs operating device, and the cam of modular springs operating device links to each other with the vacuum bubbles contact, and cam rotates the combined floodgate that can realize vacuum circuit-breaker.
Particularly, the utility model also comprises transmission connecting rod mechanism, and cam links to each other with the vacuum bubbles contact by transmission connecting rod mechanism.
Energy storage of the present utility model, combined floodgate, separating brake action realize specific as follows:
Energy storage: with handle rocking-turn Manual stored energy organization 7, by deboost axle 6 rotation axis 2 is rotated, and drive 4 rotations of swing arm parts, energy-stored spring 1 is stretched to design length and finishes stored energy operation;
Close a floodgate: thus iron core 9 promoted with the hand push button parts on the hand propelled panel, iron core 9 promotes closing device again and threads off, energy-stored spring 1 energy discharges, rotate by swing arm parts 4 band moving cams, cam rotates will be sent to vacuum bubbles to forms of motion by driving gear of breaker, make contact closure realize closing a floodgate, closing device will make "on" position be kept.
Separating brake: with the hand push button parts on the hand propelled panel, thereby promote iron core 9, iron core 9 promotes switching-off device again and threads off, the energy abrupt release that in making process, stores, and driving gear of breaker back moves, and impels the vacuum bubbles contact separately to realize separating brake.
Aforesaid way is equally applicable to electronic control, will repeat no more at this.
More than a kind of modular springs operating device provided by the utility model and a kind of vacuum circuit-breaker are described in detail.Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (10)
1. modular springs operating device is installed on and is used in the circuit breaker carrying out the operation of separating brake, combined floodgate, comprises device installing rack, energy-stored spring (1) and drive motors group, it is characterized in that, also comprises:
Be arranged at rotationally the rotation axis (2) on the described device installing rack, be provided with on the described rotation axis (2) directly and the transmitting gear (3) of described drive motors group engagement and the cam of exporting for power;
Being arranged at also can be with the swing arm parts (4) of described rotation axis rotation on the described rotation axis, one end of described energy-stored spring (1) is connected with described device installing rack, and the other end of described energy-stored spring (1) is connected with the pivotable parts of described swing arm parts (4).
2. modular springs operating device according to claim 1, it is characterized in that, described drive motors group comprises drive motors (5) and deboost axle (6), described drive motors (5) comprises output shaft (13), be provided with driven wheel (14) on the described deboost axle (6), described driven wheel has endoporus, one end of described endoporus and described deboost axle (6) key connecting, the other end of described endoporus is equipped with unidirectional needle bearing, described output shaft (13) is inserted in the described needle bearing, driven wheel (14) and described transmitting gear (3) engagement.
3. modular springs operating device according to claim 2, it is characterized in that, also comprise Manual stored energy organization (7), described Manual stored energy organization (7) comprises bevel gear wheel and the bevel pinion that meshes with described bevel gear wheel, described bevel gear wheel is arranged on the described deboost axle (6), also be provided with the spindle nose that rotates for driver on the described bevel pinion, described spindle nose is arranged on the bearing support rotationally, and bearing support uses screw attachment again on described installing rack.
4. modular springs operating device according to claim 1, it is characterized in that, also be provided with the energy storage indication component on the described device installing rack, described energy storage indication component comprises sensitive switch (11), turn pendulum indicating device (12), described swing arm parts (4) can promote to turn pendulum indicating device (12), turn pendulum indicating device (12) with described sensitive switch (11) but butt.
5. modular springs operating device according to claim 4 is characterized in that, also is provided with on the described device installing rack described turning put the locating part (8) that indicating device (12) carries out rotary spacing.
6. modular springs operating device according to claim 5 is characterized in that, described locating part (8) is screw.
7. according to claim 1 to 6 each described modular springs operating devices, it is characterized in that, be provided be used to the control assembly that carries out separating brake or closing operation on the described device installing rack, described control assembly comprises solenoid controlled device and hand push button parts, described solenoid controlled device comprises solenoid and the iron core (9) that is arranged in the described solenoid, described hand push button parts comprise can with the button spindle (10) of described iron core (9) butt, described button spindle (10) and described iron core (9) are oppositely arranged.
8. modular springs operating device according to claim 7 is characterized in that, described button spindle (10) is diamagnetic material button spindle (10).
9. a vacuum circuit-breaker comprises the vacuum bubbles contact, it is characterized in that, comprises that also the cam of described modular springs operating device links to each other with described vacuum bubbles contact such as each described modular springs operating device of claim 1 to 8.
10. vacuum circuit-breaker according to claim 9 is characterized in that, also comprises transmission connecting rod mechanism, and described cam links to each other with described vacuum bubbles contact by described transmission connecting rod mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220473328.1U CN202957195U (en) | 2012-09-17 | 2012-09-17 | Modular spring operating device and vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220473328.1U CN202957195U (en) | 2012-09-17 | 2012-09-17 | Modular spring operating device and vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957195U true CN202957195U (en) | 2013-05-29 |
Family
ID=48462754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220473328.1U Expired - Lifetime CN202957195U (en) | 2012-09-17 | 2012-09-17 | Modular spring operating device and vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114586126A (en) * | 2019-11-13 | 2022-06-03 | Ls电气株式会社 | Circuit breaker |
-
2012
- 2012-09-17 CN CN201220473328.1U patent/CN202957195U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114586126A (en) * | 2019-11-13 | 2022-06-03 | Ls电气株式会社 | Circuit breaker |
| US12087534B2 (en) | 2019-11-13 | 2024-09-10 | Ls Electric Co., Ltd. | Circuit breaker with manual energy-accumulating unit gears intitally separated from one another |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
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| CX01 | Expiry of patent term |