CN205282305U - Electric operating mechanism of breaker - Google Patents
Electric operating mechanism of breaker Download PDFInfo
- Publication number
- CN205282305U CN205282305U CN201620021676.3U CN201620021676U CN205282305U CN 205282305 U CN205282305 U CN 205282305U CN 201620021676 U CN201620021676 U CN 201620021676U CN 205282305 U CN205282305 U CN 205282305U
- Authority
- CN
- China
- Prior art keywords
- gear
- motor
- drive
- tooth
- driving toothed
- 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
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electric operating mechanism of breaker, which comprises a driving motor, operating handle, gear drive, the circuit board, take off pin, the circuit board is even pressed with the driving motor electricity, gear drive include with driving motor on the driving gear of output gear meshing, the driving gear is equipped with coaxial bevel gear and straight -tooth gear, the driving gear passes through bevel gear and output gear meshing, the driving gear passes through the driven thumb wheel of straight -tooth gear engagement, this driven thumb wheel is connected with the operating handle linkage, still install closing switch and trip switch that equal and gate board electricity is connected in the casing, face -to -face mounting that the driving gear was equipped with bevel gear has the circle of stirring with the driving gear linkage, stir the circle along with driving motor's unidirectional rotating in proper order with closing switch and tripping operation the switch contact. The utility model has the advantages of simple structure, dependable performance, anti -interference ability are stronger.
Description
Technical field
The utility model belongs to low-voltage apparatus breaker technical field, the motor-operating mechanism of especially a kind of isolating switch.
Background technology
Along with improving constantly of the every index of isolating switch so that the application scenario of isolating switch is also more and more wider. Especially in low-voltage power supply field, there has been higher requirement the energy consumption of isolating switch, reliability, mechanical life and the performance aspect such as anti-interference by national grid. In order to meet the more high performance requirement of isolating switch, isolating switch has been improved by domestic many producers. Such as, public affairs know application number be 201410837346.7 " a kind of motor-operating mechanism for miniature circuit breaker " and application number be 201310220676.7 the product shown such as " motor-operating mechanism of a kind of isolating switch ", by adopting motor-operating mechanism to carry out the function of automatic closing and automatic brake separating. Though above-mentioned isolating switch has a lot of feature, but still there is complex structure in its operating mechanism, the defect of reliability deficiency.
Practical novel content
In order to overcome the deficiencies in the prior art, the utility model provides that a kind of structure is simple, the motor-operating mechanism of dependable performance, isolating switch that anti-interference performance is stronger.
In order to realize above-mentioned purpose, the technical solution adopted in the utility model is: the motor-operating mechanism in a kind of isolating switch, comprise drive-motor, operation handle arm, connect the gear drive of drive-motor and operation handle arm, the wiring board being electrically connected with gear drive, the dropout pin being connected with gear drive, wiring board is electrically connected with drive-motor, it is characterized in that: the driving toothed gear that described gear drive comprises with the output gear on drive-motor engages, this driving toothed gear is provided with coaxial crowngear and straight-tooth gear, driving toothed gear is engaged with output gear by crowngear, driving toothed gear is by driven group of straight-tooth gears meshing wheel, this driven group wheel is connected by location axle and operation handle arm, housing is also provided with the closing switch being all electrically connected with wiring board and tripping operation switch, the end face that described driving toothed gear is provided with crowngear be provided with driving toothed gear linkage stir circle, this stir enclose along with drive-motor unidirectional rotation successively with closing switch and tripping operation switch contact.
In said structure, this drive-motor just can realize closing a floodgate and trip operation in the process rotated forward, drive-motor is engaged with crowngear by cone gear, transmission of power is taken turns by straight-tooth gear to driven group simultaneously, stir circle along with driving toothed gear synchronous axial system, gears meshing stroke on straight-tooth gear and driven group of wheel and to stir the stroke enclosed between closing switch adaptive, when driven group wheel tried hard to recommend dynamic operation handle arm close a floodgate put in place time, stir circle to touch with closing switch, wiring board receives combined floodgate electrical signal, and output signal to drive-motor and make it stop rotating, straight-tooth gear and the driven group of driven fan-shaped tooth taken turns are disengaged from engagement status, realize power to depart from, isolating switch keeps normally closing a floodgate state, and freely can trip when short circuit or overload, when drive-motor continues to rotate forward, crowngear promotes dropout lever by stirring boss after rotating to certain angle, thus touch and the dropout pin of small-sized isolating switch moves, make some poles circuit breaker trip, original position can not be returned to because of dropout pin and keep trip status, and stir circle and be rotated further along with driving toothed gear and touch with tripping operation switch, wiring board receives tripping operation electrical signal, and output signal to drive-motor and make it stop rotating, and after drive-motor stops rotation, causing stirring boss promotes dropout lever to be parked in the position making to stick up on dropout pin, keep trip status cannot return to original position, some contact of breaker keep separate stage. and when needing isolating switch to close a floodgate, wiring board exports electrical signal to drive-motor makes it continue to rotate forward, such as above-mentioned circulation.
As further setting of the present utility model, the end face that described driving toothed gear is provided with crowngear is provided with connection axle head, and this connection axle head overcoat is connected to axle sleeve, and this axle sleeve periphery is provided with external tooth, described in stir circle internal ring wall be provided with the interior ring gear engaged with axle sleeve external tooth.
In said structure, this is stirred ring outer wall and is also provided with and group block of closing switch or tripping operation switch contact, this is stirred and encloses the structure engaged by teeth and coordinate with driving toothed gear synchronous axial system, can be engaged by the dislocation between interior ring gear with axle sleeve external tooth simultaneously and carry out regulating the stroke length stirred between circle slide block and closing switch, tripping operation switch, such that it is able to manual regulation setting combined floodgate time, tripping operation time.
As further setting of the present utility model, described driven group of wheel comprises turning wheel, this turning wheel is extended with the driven fan-shaped tooth with described straight-tooth gears meshing, the fan-shaped tooth of the active that this straight-tooth gear is coaxial with crowngear, the gear radian of the fan-shaped tooth of described active, the gear radian of driven fan-shaped tooth are all identical with combined floodgate isolating switch combined floodgate angle.
In said structure, engage formation by principal and subordinate's toothed segment between driven group of wheel and driving toothed gear to be synchronized with the movement, straight-tooth gear and driven fan-shaped tooth are toothed segment, the gear radian of the driven fan-shaped tooth of this switching-on mechanism is identical with the combined floodgate angle of isolating switch, also identical with the gear radian of the straight-tooth gear of motion-work wheel, in feed motion process, they are engagement states, after completing feed motion, they are the non-engagement states staggered, thus realize real power and depart from, isolating switch keeps normally closing a floodgate state, and freely can trip when short circuit or overload, two toothed segment are in non-engagement state causes tripping operation also can not to be reversed by drive motor.
As further setting of the present utility model, described turning wheel being offered limited location axis hole, described location axle forms circumference location through spacing axis hole and coordinates with operation handle arm.
In said structure, being connected to form, by location axle, the relation of being linked between turning wheel and operation handle arm, power is delivered to operation handle arm by driving toothed gear and turning wheel by drive-motor, thus realizes electric switch-on function.
As further setting of the present utility model, described turning wheel upper limit axis hole vibrational power flow triangular in shape, described location axle is the Axis Tripod structure consistent with limit shaft hole shape.
In said structure, this turning wheel is extended with turning wheel coupling shaft, this turning wheel coupling shaft is provided with the spacing axis hole of trilateral, the operation handle arm of steel Axis Tripod and some minimum type isolating switchs and run through to be linked with turning wheel coupling shaft and realize electric switch-on, trip avoidance function.
As further setting of the present utility model, one end that described driving toothed gear is provided with crowngear is provided with stirs boss, this is stirred boss and is connected with dropout pin by the dropout lever being articulated with on Shell of circuit breaker, the coupling end of dropout lever is with to stir boss corresponding, the operating side of dropout lever with thread off for should, stir boss formed with dropout lever coupling end in the drive-motor unidirectional rotation stroke of a week contact for single time and by dropout lever end driving dropout pin sticks up.
In said structure, the driving toothed gear back side stir boss preferably eccentric structure arrange, namely stir boss relatively to arrange at driving toothed gear center, drive-motor is in rotating forward process, driving toothed gear rotates to certain angle along with motor and promotes by stirring boss and stick up on the operating side of dropout lever, thus touch and the dropout pin of small-sized isolating switch moves, make some poles circuit breaker trip, because dropout pin can not return to original position and keep trip status.
Adopting such scheme, the utility model has the following advantages: 1. drive-motor one direction rotates, and when combined floodgate puts in place, can automatically disengage by power. 2. there is tripping operation to keep function, can be used for pre-payment electric energy table closing by hand and contact when arrearage and keep separate stage. 3. setting can be regulated to close a floodgate and the tripping operation time, and the utility model also has that structure is simple, dependable performance, advantage that anti-interference performance is stronger.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Accompanying drawing 1 is the structural front view of the utility model specific embodiment motor-operating mechanism when combined floodgate state;
Accompanying drawing 2 is the structural front view of the utility model specific embodiment motor-operating mechanism when gate-dividing state;
Accompanying drawing 3 is the side structure schematic diagram of the utility model specific embodiment motor-operating mechanism;
Accompanying drawing 4 is the structural representation of the utility model specific embodiment brake separating mechanism before tripping operation;
Accompanying drawing 5 is the structural representation of the utility model specific embodiment brake separating mechanism when tripped condition;
Accompanying drawing 6 is the structural representation of the utility model specific embodiment switching-on mechanism before combined floodgate;
Accompanying drawing 7 is the structural representation of the utility model specific embodiment switching-on mechanism when combined floodgate state;
Accompanying drawing 8 is the structural representation of driven group of the utility model specific embodiment wheel;
Accompanying drawing 9 is the Facad structure schematic diagram of the utility model specific embodiment driving toothed gear;
Accompanying drawing 10 is the structure schematic diagram of the utility model specific embodiment driving toothed gear;
Accompanying drawing 11 stirs the structural representation of circle for the utility model specific embodiment;
Accompanying drawing 12 is the structural representation of the utility model specific embodiment dropout lever;
Drive-motor 1, operation handle arm 2, output gear 11, driving toothed gear 3, crowngear 31, straight-tooth gear 32, connect axle head 331, axle sleeve 332, stir boss 333, driven group of wheel 4, turning wheel 41, coupling shaft 42, spacing axis hole 421, location axle 43, driven fan-shaped tooth 44, stir circle 5, dial block 51, interior ring gear 52, wiring board 6, closing switch 71, tripping operation switch 72, dropout lever 81, dropout pin 82.
Embodiment
Specific embodiment of the utility model is the motor-operating mechanism of isolating switch as shown in figs. 1-12, comprise drive-motor 1, operation handle arm 2, connect the gear drive of drive-motor 1 and operation handle arm 2, the wiring board 6 being electrically connected with gear drive, the dropout pin 82 being connected with gear drive, wiring board 6 is electrically connected with drive-motor 1, the driving toothed gear 3 that gear drive comprises with the output gear 11 on drive-motor 1 engages, this driving toothed gear 3 is provided with coaxial crowngear 31 and straight-tooth gear 32, driving toothed gear 3 is engaged with output gear 11 by crowngear 31, driving toothed gear 3 engages driven group of wheel 4 by straight-tooth gear 32, this driven group wheel 4 is connected with operation handle arm 2 by location axle 43, housing is also provided with the closing switch 71 being all electrically connected with wiring board 6 and tripping operation switch 72, the end face that driving toothed gear 3 is provided with crowngear 31 is provided with stirs circle 5 with driving toothed gear 3 links, this stir circle 5 along with drive-motor 1 unidirectional rotation successively with closing switch 71 and trip switch 72 contact.
Above-mentioned drive-motor 1 just can realize closing a floodgate and trip operation in the process rotated forward, drive-motor 1 is engaged with crowngear 31 by cone gear, transmission of power is taken turns on 4 to driven group by straight-tooth gear 32 simultaneously, stir circle 5 along with driving toothed gear 3 synchronous axial system, straight-tooth gear 32 and the driven group of stroke adaptation taking turns the gears meshing stroke on 4 and stir between circle 5 and closing switch 71, when driven group take turns 4 tried hard to recommend the 2-in-1 lock of dynamic operation handle arm put in place time, stir circle 5 to touch with closing switch 71, wiring board 6 receives combined floodgate electrical signal, and output signal to drive-motor 1 and make it stop rotating, straight-tooth gear 32 and the driven group of driven fan-shaped tooth 44 taken turns on 4 are disengaged from engagement status, realize power to depart from, isolating switch keeps normally closing a floodgate state, and freely can trip when short circuit or overload, when drive-motor 1 continues to rotate forward, crowngear 31 promotes dropout lever 81 by stirring boss 333 after rotating to certain angle, thus touch and the dropout pin 82 of small-sized isolating switch moves, make some poles circuit breaker trip, original position can not be returned to because of dropout pin 82 and keep trip status, and stir circle 5 and be rotated further along with driving toothed gear 3 and touch with tripping operation switch 72, wiring board 6 receives tripping operation electrical signal, and output signal to drive-motor 1 and make it stop rotating, and after drive-motor 1 stops rotation, causing stirring boss 333 promotes dropout lever 81 to be parked in the position making to stick up on dropout pin 82, keep trip status cannot return to original position, some contact of breaker keep separate stage. and when needing isolating switch to close a floodgate, wiring board 6 exports electrical signal to drive-motor 1 makes it continue to rotate forward, such as above-mentioned circulation.
The end face that above-mentioned driving toothed gear 3 is provided with crowngear 31 is provided with and connects axle head 331, is socketed with axle sleeve 332 outside this connection axle head 331, and this axle sleeve 332 periphery is provided with external tooth, stirs circle 5 internal ring walls and is provided with and the interior ring gear 52 that axle sleeve 332 external tooth engages. This stirs group block 51 that circle 5 outer walls are also provided with closing switch 71 or tripping operation switch 72 contact, this is stirred the structure that circle 5 engaged by teeth and coordinates with driving toothed gear 3 synchronous axial system, can be engaged by the dislocation between interior ring gear 52 with axle sleeve 332 external tooth simultaneously and carry out regulating the stroke length stirred between circle 5 groups of blocks 51 and closing switch 71, tripping operation switch 72, such that it is able to manual regulation setting combined floodgate time, tripping operation time.
Above-mentioned driven group of wheel 4 comprises turning wheel 41, this turning wheel 41 is extended with the driven fan-shaped tooth 44 engaged with straight-tooth gear 32, the fan-shaped tooth of the active that this straight-tooth gear 32 is coaxial with crowngear 31, the gear radian of straight-tooth gear 32, the gear radian of driven fan-shaped tooth 44 are all identical with combined floodgate isolating switch combined floodgate angle. engage formation by principal and subordinate's toothed segment between driven group of wheel 4 and driving toothed gear 3 to be synchronized with the movement, straight-tooth gear 32 is toothed segment with driven fan-shaped tooth 44, the gear radian of the driven fan-shaped tooth 44 of this switching-on mechanism is identical with the combined floodgate angle of isolating switch, also identical with the gear radian of the straight-tooth gear 32 of motion-work wheel, in feed motion process, they are engagement states, after completing feed motion, they are the non-engagement states staggered, thus realize real power and depart from, isolating switch keeps normally closing a floodgate state, and freely can trip when short circuit or overload, two toothed segment are in non-engagement state causes tripping operation also can not to be reversed by drive motor.
Offering limited location axis hole 421 on above-mentioned turning wheel 41, location axle 43 forms circumference location through spacing axis hole 421 and coordinates with operation handle arm 2. Being connected to form, by location axle 43, the relation of being linked between turning wheel 41 and operation handle arm 2, power is delivered to operation handle arm 2 by driving toothed gear 3 and turning wheel 41 by drive-motor 1, thus realizes electric switch-on function.
Above-mentioned turning wheel 41 upper limit axis hole 421 vibrational power flow triangular in shape, location axle 43 is the Axis Tripod structure consistent with spacing axis hole 421 shape. This turning wheel 41 is extended with turning wheel 41 coupling shaft 42, this turning wheel 41 coupling shaft 42 is provided with the spacing axis hole 421 of trilateral, the operation handle arm 2 of steel Axis Tripod and some minimum type isolating switchs and run through to be linked with turning wheel 41 coupling shaft 42 and realize electric switch-on, trip avoidance function.
One end that above-mentioned driving toothed gear 3 is provided with crowngear 31 is provided with stirs boss 333, this is stirred boss 333 and is connected with dropout pin 82 by the dropout lever 81 being articulated with on Shell of circuit breaker 9, the coupling end of dropout lever 81 is corresponding with stirring boss 333, the operating side of dropout lever 81 is corresponding with dropout pin 82, stir boss 333 formed with dropout lever 81 coupling end in the drive-motor 1 unidirectional rotation stroke of a week contact for single time and by driving dropout pin 82 in dropout lever 81 operating side sticks up. Driving toothed gear 3 back side stir boss 333 preferably eccentric structure arrange, namely stir boss 333 relatively to arrange at driving toothed gear 3 center, drive-motor 1 is in rotating forward process, driving toothed gear 3 rotates to certain angle along with motor and promotes by stirring boss 333 and stick up on the operating side of dropout lever 81, thus touch and the dropout pin 82 of small-sized isolating switch moves, make some poles circuit breaker trip, because dropout pin 82 can not return to original position and keep trip status.
The utility model has the following advantages: 1. drive-motor 1 one direction rotates, and when combined floodgate puts in place, can automatically disengage by power. 2. there is tripping operation to keep function, can be used for pre-payment electric energy table closing by hand and contact when arrearage and keep separate stage. 3. setting can be regulated to close a floodgate and the tripping operation time, and the utility model also has that structure is simple, dependable performance, advantage that anti-interference performance is stronger.
The utility model is not limited to above-mentioned embodiment; persons skilled in the art are content disclosed in the utility model; other multiple embodiments can be adopted to implement of the present utility model; or every employing project organization of the present utility model and thinking; do simple change or change, all fall into protection domain of the present utility model.
Claims (6)
1. the motor-operating mechanism of an isolating switch, comprise drive-motor, operation handle arm, connect the gear drive of drive-motor and operation handle arm, the wiring board being electrically connected with gear drive, the dropout pin being connected with gear drive, wiring board is electrically connected with drive-motor, it is characterized in that: the driving toothed gear that described gear drive comprises with the output gear on drive-motor engages, this driving toothed gear is provided with coaxial crowngear and straight-tooth gear, driving toothed gear is engaged with output gear by crowngear, driving toothed gear is by driven group of straight-tooth gears meshing wheel, this driven group wheel is connected by location axle and operation handle arm, housing is also provided with the closing switch being all electrically connected with wiring board and tripping operation switch, the end face that described driving toothed gear is provided with crowngear be provided with driving toothed gear linkage stir circle, this stir enclose along with drive-motor unidirectional rotation successively with closing switch and tripping operation switch contact.
2. the motor-operating mechanism of isolating switch according to claim 1, it is characterized in that: the end face that described driving toothed gear is provided with crowngear is provided with connection axle head, this connection axle head overcoat is connected to axle sleeve, this axle sleeve periphery is provided with external tooth, described in stir circle internal ring wall be provided with the interior ring gear engaged with axle sleeve external tooth.
3. the motor-operating mechanism of isolating switch according to claim 1, it is characterized in that: described driven group of wheel comprises turning wheel, this turning wheel is extended with the driven fan-shaped tooth with described straight-tooth gears meshing, the fan-shaped tooth of the active that this straight-tooth gear is coaxial with crowngear, the gear radian of the fan-shaped tooth of described active, the gear radian of driven fan-shaped tooth are all identical with combined floodgate isolating switch combined floodgate angle.
4. the motor-operating mechanism of isolating switch according to claim 3, it is characterised in that: offering limited location axis hole on described turning wheel, described location axle forms circumference location through spacing axis hole and coordinates with operation handle arm.
5. the motor-operating mechanism of isolating switch according to claim 4, it is characterised in that: described turning wheel upper limit axis hole vibrational power flow triangular in shape, described location axle is the Axis Tripod structure consistent with limit shaft hole shape.
6. the motor-operating mechanism of isolating switch according to claim 1, it is characterized in that: one end that described driving toothed gear is provided with crowngear is provided with stirs boss, this is stirred boss and is connected with dropout pin by the dropout lever being articulated with on Shell of circuit breaker, the coupling end of dropout lever is with to stir boss corresponding, the operating side of dropout lever with thread off for should, stir boss formed with dropout lever coupling end in the drive-motor unidirectional rotation stroke of a week contact for single time and by dropout lever end driving dropout pin sticks up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021676.3U CN205282305U (en) | 2016-01-08 | 2016-01-08 | Electric operating mechanism of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021676.3U CN205282305U (en) | 2016-01-08 | 2016-01-08 | Electric operating mechanism of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205282305U true CN205282305U (en) | 2016-06-01 |
Family
ID=56066856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620021676.3U Active CN205282305U (en) | 2016-01-08 | 2016-01-08 | Electric operating mechanism of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205282305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057511A (en) * | 2016-08-12 | 2016-10-26 | 北京明日电器设备有限责任公司 | Operating mechanism for change-over switch |
| CN107546075A (en) * | 2016-06-27 | 2018-01-05 | 郑文秀 | Link worm gear and divide-shut brake drive device |
-
2016
- 2016-01-08 CN CN201620021676.3U patent/CN205282305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546075A (en) * | 2016-06-27 | 2018-01-05 | 郑文秀 | Link worm gear and divide-shut brake drive device |
| CN107546075B (en) * | 2016-06-27 | 2020-01-21 | 郑文秀 | Linkage worm wheel and opening and closing drive device |
| CN106057511A (en) * | 2016-08-12 | 2016-10-26 | 北京明日电器设备有限责任公司 | Operating mechanism for change-over switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205282420U (en) | Low voltage apparatus circuit breaker | |
| CN105470012A (en) | Electric operating mechanism for circuit breaker | |
| CN106710990B (en) | Miniature circuit breaker overlaps brake mechanism | |
| CN102969209B (en) | A kind of automatic reclosing transmission mechanism | |
| CN205282305U (en) | Electric operating mechanism of breaker | |
| CN103366979B (en) | The transmission device of automatic change-over | |
| CN105529224A (en) | Operation module for small-sized air switch | |
| CN205723383U (en) | The clutch of miniature circuit breaker electrically operated device | |
| CN106504954B (en) | Breaker with creepage protection function and divide-shut brake function | |
| CN103021751A (en) | Intelligent controller of automatic reclosing lock | |
| CN208767238U (en) | A kind of novel breaker operating mechanism | |
| CN102496532B (en) | For the electric and manual integral operating mechanism of circuit breaker | |
| CN203055708U (en) | Electric operating mechanism for isolation switch | |
| CN204760252U (en) | Automatic circuit breaker electric operating mechanism of separation and reunion | |
| CN205282412U (en) | Separating brake operating device in external circuit breaker of electric energy meter | |
| CN205828314U (en) | Switch-on operating mechanism in chopper | |
| CN209544272U (en) | A kind of breaker with electrically operated device | |
| CN105374643B (en) | A kind of motor-operating mechanism of the external breaker of electric energy meter | |
| CN106504955A (en) | A kind of chopper and its electronic close/open machine | |
| CN205621682U (en) | Separating brake operating device in circuit breaker | |
| CN205723387U (en) | A kind of high breaking takes the on/off operation mechanism of control breaker | |
| CN205230985U (en) | Electric operating mechanism of external circuit breaker of electric energy meter | |
| CN108417466A (en) | Breaker AC and DC motor-operating mechanism | |
| CN205645724U (en) | Electrically -operated mechanism of breaker | |
| CN202948891U (en) | Automatic reclosing transmission mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |