CN204099690U - Electric emergency cuts off actuator - Google Patents
Electric emergency cuts off actuator Download PDFInfo
- Publication number
- CN204099690U CN204099690U CN201420587992.8U CN201420587992U CN204099690U CN 204099690 U CN204099690 U CN 204099690U CN 201420587992 U CN201420587992 U CN 201420587992U CN 204099690 U CN204099690 U CN 204099690U
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- shaft
- clutch
- emergency
- electric machine
- output shaft
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- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a kind of electric emergency and cuts off actuator; Comprise body, reversible electric machine, excitation is braked, power-transmitting unit, stored energy mechanism, damping mechanism during emergency cut-off, manual-operating mechanism, handwheel self-locking mechanism, automatic reset mechanism.What have power supply comes switch valve and adjust flux by motor power under normal circumstances, by spring restoring force emergency cut-off valve when power failure, manually operates and can open valve during power failure.Safe and reliable electric emergency is provided to cut off actuator.
Description
Technical field
The present invention relates to Systematical control and automation instrument technical field.Specifically belong to electric actuator technical field.
Background technique
The valve being arranged on pipeline when gas pipe line, fuel line generation burst accident needs emergency cut-off or opens.Can not ensure to provide the external impetus such as power supply when there is burst accident, valve needs automatic emergency to cut off.
General emergency cut-off power is by spring restoring force.Usual motor power is gone up spring volume pin, and leans on spring restoring force emergency cut-off valve when there is burst accident.
But existing electric emergency cuts off actuator has following shortcoming; Shortcoming 1: electric emergency cuts off actuator does not have hand-operating device, cannot open valve when therefore having a power failure; Shortcoming 2: hand-operating device is arranged on electric emergency and cuts off between actuator and valve, this hand-operating device adopts drive structure of gear worm, electric emergency cut off the output shaft of actuator and valve rod manually operation equipment link together and rotate simultaneously.Hand-operating device housing installs worm screw, worm shaft fixes handwheel, rotate handwheel when needing manually-operable and overcome spring restoring force and valve resistance can open valve.In order to ensure that electric emergency cuts off actuator's switch valve under normal circumstances, this worm gear structure adopts clutch, and when reversible electric machine runs well, clutch must separate, and during worm gear wheel, worm screw stops not turning.But arranging clutch to increase while cost just in case forgotten to declutch and recover power supply and to electrical power, the transmission part that hand-operating device or electric emergency cut off actuator turns motionless and breaks down; Shortcoming 3: emergency cut-off terminates moment motor and other transmission paries are instantaneous stops operating, the parts that inertia is large as rotor easily damage, and gear also easily damages.Terminate the impact of moment in order to alleviate emergency cut-off, between motor and motor gear, clutch is set, make motor not during emergency cut-off then reach the object protecting motor.But this structure makes the rotational velocity of gear faster, and the urgent segment time is shorter, and gear more easily damages.
Summary of the invention
The present invention for solving the problem, its objective is provide a kind of safe and reliable, actuator can be cut off by manually operated electric emergency when having a power failure.
The present invention is the technological scheme solving its technical problem;
A kind of electric emergency cuts off actuator, the valve on pipeline for emergency cut-off or opening installation, it is characterized in that: comprising: body, described body comprises casing and is arranged on the reversible electric machine in described casing, be arranged on the excitation brake on described reversible electric machine, the emergency cut-off damping mechanism be connected with described reversible electric machine, the emergency cut-off stored energy mechanism of the energy of described reversible electric machine is stored by power-transmitting unit, be connected for the output shaft of emergency cut-off valve with described emergency cut-off stored energy mechanism, and the clutch shaft be located on described power-transmitting unit, support, it is fixed on the outside of described casing, and this support comprises self-locking mechanism and automatic reset mechanism, and hand-operating device, it comprise can with the clutch mechanism of the described clutch shaft phase clutch in described body, and the rotating mechanism to be connected with the described automatic reset mechanism on described support, wherein, be separated at the described under normal circumstances clutch shaft be energized and described clutch mechanism, by the power switch valve of described reversible electric machine, when having a power failure, described clutch shaft combines with described clutch mechanism, opens valve by described hand-operating device.
In the present invention, described power-transmitting unit also comprises overrunning clutch, described reversible electric machine and other power-transmitting unit High Rotation Speeds is made when power failure emergency cut-off, driving mechanism at the end of emergency cut-off between described overrunning clutch and described output shaft stops operating, driving mechanism between described reversible electric machine and described overrunning clutch stops after being rotated further certain hour, thus plays buffer function.
In the present invention, described power-transmitting unit comprises, motor gear, is arranged on the reducer output shaft of described retarder; Intermediate gear, is meshed with described motor gear and is connected in described overrunning clutch; And clutch shaft gear, be connected with described intermediate gear via described overrunning clutch, wherein, described clutch shaft is lengthened by clutch shaft gear to form, described clutch shaft and described clutch mechanism are in separated state under normal circumstances, thus described hand-operating device stops not turning; Need under power down mode during manually-operable, to make described clutch mechanism and described clutch shaft link together, described output shaft can be rotated by the rotation of described hand-operating device.
In the present invention, described output shaft is rotated by described hand-operating device thus after opening valve during power failure, described hand-operating device can pin described rotating mechanism with described self-locking mechanism, and described emergency cut-off stored energy mechanism also can not be closed automatically, stays open state.
In the present invention, described emergency cut-off stored energy mechanism comprises, the spring shaft gearwheel be meshed with described clutch shaft gear, the wind spring be located at the spring shaft in described spring shaft gearwheel and be wound on described spring shaft, the spring shaft gear be meshed with the master gear of output shaft, when power supply is cut-off thus described reversible electric machine can not operate, leaned on the restoring force counter-rotating of spring by the described wind spring of described emergency cut-off stored energy mechanism, thus make the described master gear be meshed with described spring shaft gear drive described output shaft to rotate to the direction of throttle down.
In the present invention, described output shaft has stationary positioned block, when described output shaft forwards closed positions to, the holding down bolt that described stationary positioned block is fixed on described body blocks thus described output shaft stops operating.
In the present invention, described output shaft is fixed with standard-sized sheet cam, when described output shaft arrives fully open position, described standard-sized sheet cam touches standard-sized sheet limit switch, thus the described reversible electric machine that breaks open directional traffic power source, described reversible electric machine stops operating.
In the present invention, the described self-locking mechanism of described support is stage clip, and be provided with fixator pins in the outside of described support, described fixator pins overlaps described stage clip, described fixator pins moves axially in described bracket holes.
In the present invention, described Manual revolving gear comprises: handwheel, and for being fixed on the fixed plate of described support, described fixed plate and described handwheel rotate integrally; Described fixator pins is inserted in the elongated hole of described fixed plate, and when described handwheel is to evolution to rotation, described fixator pins ejects from the elongated hole of described fixed plate, thus described handwheel can continue to evolution to rotation;
Rotated to direction, pass by described handwheel when needs are closed, when needing to keep certain aperture, described fixator pins is inserted in described fixed plate elongated hole and can keeps open state.
In the present invention, clutch mechanism is the hand wheel shaft for installing described handwheel, described hand wheel shaft is formed with the shrinkage pool of the front end for inserting described clutch shaft, when to when pressing down described handwheel, described clutch shaft is inserted in the shrinkage pool of described hand wheel shaft, thus described clutch shaft and described hand wheel shaft can rotate simultaneously.
According to the present invention, following effect can be reached.
That is, have electricity under normal circumstances by reversible electric machine power switch valve, can valve be opened when having a power failure by handwheel.
Accompanying drawing explanation
Fig. 1 is the structural representation that electric emergency of the present invention cuts off actuator
Fig. 2 is emergency cut-off stored energy mechanism schematic diagram
Fig. 3 is the plan view of wind spring
Fig. 4 is supporting structure schematic diagram
Fig. 5 is hand-operating device
Fig. 6 is fixed plate plan view
Fig. 7 is clutch shaft schematic diagram
Fig. 8 is overrunning clutch structural representation
Fig. 9 is the circuit diagram of emergency cut-off actuator
Embodiment
Below, with reference to the accompanying drawings the specific embodiment of the invention is described in detail.
Fig. 1 represents that electric emergency of the present invention cuts off the structural representation of actuator.1 is body, and 1a is casing top, and 1b is casing bottom, and 2 is reversible electric machines, and reversible electric machine 2 is power resources of switch valve when having power supply, and 3 is retarders, retarder 3 the transmission of power of reversible electric machine 2 to power-transmitting unit.4,5,8,9,10,11 is gears, and 12 is output shafts, and the power of motor is by gear transmission to output shaft 12, and output shaft 12 is connected with valve, by the forward-reverse switch valve of reversible electric machine 2.30 is excitation brakes, simultaneously reversible electric machine 2 and excitation brake 30 to be energized, when reversible electric machine 2 operates, excitation brake 30 is in off-position release reversible electric machine 2, and the power supply of reversible electric machine 2 is cut off excitation brake 30 when shutting down and is energized pinning reversible electric machine 2.7 is clutch shafts, and clutch shaft 7, intermediate gear 5, clutch shaft gear 8 are one and rotate simultaneously.13 is spring shafts, and spring shaft 13, spring shaft gearwheel 9, spring shaft gear 10 are one and rotate simultaneously.14 is wind springs, and 15 is spring bolts, and 16 is positioning blocks, and 17 is holding down bolts, and when output shaft 12 forwards closed positions to, positioning block 16 is blocked by holding down bolt 17 and stops operating, and valve is in closed positions.40 is standard-sized sheet cams, 41 is standard-sized sheet limit switches, and 42 is complete shut-down cams, and 43 is complete shut-down limit switches, when output shaft 12 forwards fully open position to standard-sized sheet cam 40 press standard-sized sheet limit switch 41 and cut off reversible electric machine 2 evolution to power supply, output shaft 12 and valve stop at fully open position.When output shaft 12 forwards closed positions to, complete shut-down cam 42 presses complete shut-down limit switch 43 and cuts off the power supply that reversible electric machine 2 closes direction, and output shaft 12 and valve stop at closed positions.20 is supports, and 21 is bearings, and 26 is stage clips, and 25 is fixator pins, and 27 is stage clips.123 is hand-operating devices, and 22 is hand wheel shafts, and 23 is handwheels, and 24 is fixed plates, and hand wheel shaft 22, fixed plate 24, handwheel 23 are one and rotate simultaneously.Move axially in the bearing 21 that hand wheel shaft 22 can be installed in support 20, stage clip 26 comes fixed plate 24, handwheel 23, hand wheel shaft 22, is therefore having the hand wheel shaft under normal circumstances 22 of power supply and clutch shaft 7 to be that separately when clutch shaft 7 rotates, hand wheel shaft 22 and handwheel 23 stop not turning to casing 1a outside direction jack-up.
Fig. 2 is emergency cut-off stored energy mechanism schematic diagram.114 is emergency cut-off stored energy mechanisms, and spring shaft 13 is connected with wind spring the inner, and coil spring when spring shaft 18 rotates clockwise, spring bolt 15 is fixed on casing 1b wind spring outer end.
Fig. 3 is the plan view of wind spring.Reversible electric machine 2 rotates to evolution to spring shaft clockwise direction when rotating and wind spring is rolled up.
Fig. 4 is supporting structure schematic diagram.Fixator pins 25 can move axially in the hole of support, and the thrust overcoming stage clip 27 withdraws fixator pins 25 and is inserted in fixed plate 24 elongated hole to handwheel 23 direction, can pin handwheel 23 and make valve be in open state.Handwheel 23 is bound to origin-location to evolution automatically to the restoring force of fixator pins 25 pressured spring 27 when rotating, and handwheel 23 can freely rotate.
Fig. 5 is hand-operating device.Valve is opened in the event of a loss of power with manually-operable, handwheel 23 will be pressed to casing 1a direction, hand wheel shaft 22 and clutch shaft 7 insert and link together, and can open valve when handwheel 23 is rotated counterclockwise by clutch shaft 7, clutch shaft gear 8, spring shaft gearwheel 9, spring shaft gear 10, master gear 11, output shaft 12.
Fig. 6 is fixed plate plan view.The object that fixed plate 24 is provided with factory hole is that fixed plate 24 easily ejects from elongated hole to evolution to fixator pins when rotating, and automatically terminates self-locking state.
Fig. 7 is clutch shaft schematic diagram.Clutch shaft 7 and hand wheel shaft 22 can clutches.
Fig. 8 is overrunning clutch structural representation.When intermediate gear 5 counterclockwise rotates overrunning clutch 6 effect under clutch shaft 7 follow intermediate gear 5 to rotate together, when intermediate gear 5 clockwise direction rotates, clutch shaft 7 does not turn, and intermediate gear 5 and overrunning clutch 6 dally centered by clutch shaft 7.When clutch shaft 7 drives intermediate gear 5 to rotate, when clutch shaft 7 rotates clockwise, intermediate gear 5 and then rotates clockwise, but when clutch shaft 7 counterclockwise rotates, intermediate gear does not turn, and clutch shaft 7 dallies in overrunning clutch 6.When opening valve with the power of reversible electric machine 2, motor gear 4 clockwise direction rotates, and intermediate gear 5 drives clutch shaft 7 counterclockwise to rotate, and spring shaft clockwise direction rotates thus coil spring, master gear 11 and output shaft 12 counterclockwise rotating opening valve.During power throttle down with reversible electric machine 2, motor gear 4 counterclockwise rotates, intermediate gear 5 clockwise direction rotates, intermediate gear 5 is can not reversible electric machine transmission of power to clutch shaft 7, but wind spring restoring force makes clutch shaft 7 clockwise direction rotate, therefore also rotate can throttle down for master gear 11, output shaft 12.Counterclockwise rotate by spring shaft during wind spring restoring force emergency cut-off during power failure, master gear 11 and output shaft 12 clockwise direction rotate thus throttle down, spring shaft gearwheel drives clutch shaft 7 clockwise direction to rotate simultaneously, reversible electric machine also rotates, output shaft 12 is decided to be bolt to positioning block during closed positions and blocks two and stop operating, master gear 11, spring shaft gear, spring shaft gearwheel, clutch shaft 7 stops operating, but intermediate gear 5 continues to rotate clockwise, therefore stop after motor gear 4 and reversible electric machine 2 are also rotated further certain hour, therefore, it is possible to impact at the end of buffering emergency cut-off.
Fig. 9 is the circuit diagram of emergency cut-off actuator.Segment switch connection to 88 time reversible electric machine 2 to valve evolution to running, when output shaft 12 arrives valve wide open position, standard-sized sheet cam 40 presses standard-sized sheet limit switch 41, and the reversible electric machine 2 described in direction circuit of opening that standard-sized sheet limit switch 41 cuts off motor is stopped running.Segment switch connection to 89 time reversible electric machine 2 close direction running to valve, when output shaft 12 arrives valve closed positions, complete shut-down cam 42 presses complete shut-down limit switch 43, and the reversible electric machine 2 described in direction circuit of opening that complete shut-down limit switch 43 cuts off motor is stopped running.Control panel controls reversible electric machine 2 and excitation brake 30 can not be energized simultaneously, and when reversible electric machine 2 operates, excitation brake 30 is de-energized release motor, and reversible electric machine 2 power supply is cut off excitation brake 30 energising when shutting down and therefore pins reversible electric machine 2.
In FIG, when reversible electric machine 2 closes direction running to valve, the transmission of power of reversible electric machine 2 is to motor gear 4 and intermediate gear 5, but clutch shaft 7 is not lean on the power of reversible electric machine 2 to rotate to direction, pass, and clutch shaft 7 is obtained the restoring force of wind spring by spring gearwheel and spring shaft gear and rotated.Master gear 11 and output shaft 12 rotate to direction, pass by spring-return power.
In FIG, when having a power failure, manually operation is opened valve and is again recovered power supply after pinning handwheel, when reversible electric machine 2 is to valve evolution to running, handwheel 23 is to evolution to rotation, at this time fixator pins ejects from fixed plate elongated hole and contacts self-locking, stage clip 26 is extrapolated for handwheel 23 simultaneously, hand wheel shaft 22 and clutch shaft 7 separate, thus when reversible electric machine continues to evolution to rotation, handwheel does not turn, and this hand-operating device is safe.When having a power failure, manually operation is opened valve and is again recovered power supply after pinning handwheel, when reversible electric machine 2 closes direction running to valve, hand wheel shaft 22 and clutch shaft 7 still keep coupled condition, at this time motor gear and intermediate gear rotate, but clutch shaft 7 and spring gearwheel 9, spring shaft gear 10, master gear 11, output shaft 12 do not turn, although therefore reversible electric machine 2 dallies, handwheel does not turn.Handwheel from self-locking state removed might as well handwheel be still in self-locking state might as well be all safe.
In FIG, can substitute with wire spring the object that wind spring can reach emergency cut-off valve.The bearing installed in support 20 can change overrunning clutch into, at this time handwheel 23 can only rotate to opening valve direction, after handwheel 23 turns an angle, handwheel 23 is loosed one's grip at any time, but handwheel 23 is not firmly closed direction by spring-return power from trend by unidirectional clutch lock not to rotate.
Claims (10)
1. electric emergency cuts off an actuator, and the valve on pipeline for emergency cut-off or opening installation, is characterized in that: comprising:
Body (1), described body comprises casing (1a, 1b) and the reversible electric machine (2) be arranged in described casing, be arranged on excitation brake (30) on described reversible electric machine (2), the emergency cut-off damping mechanism (6) be connected with described reversible electric machine (2), by power-transmitting unit (4, 5, 6, 8, 9, 10) the emergency cut-off stored energy mechanism (114) of the energy of described reversible electric machine is stored, be connected with described emergency cut-off stored energy mechanism (114) for the output shaft (12) of emergency cut-off valve, and the clutch shaft (7) be located on described power-transmitting unit,
Support (20), it is fixed on the outside of described casing (1a), and this support comprises self-locking mechanism (27) and automatic reset mechanism (26); And
Hand-operating device (123), it comprise can with the clutch mechanism (22) of described clutch shaft (7) the phase clutch in described body, and the rotating mechanism (23,24) be connected with the described automatic reset mechanism on described support, wherein
Be separated with described clutch mechanism (22) the described under normal circumstances clutch shaft (7) of energising, by the power switch valve of described reversible electric machine, when having a power failure, described clutch shaft (7) combines with described clutch mechanism (22), opens valve by described hand-operating device.
2. electric emergency as claimed in claim 1 cuts off actuator, it is characterized in that:
Described power-transmitting unit also comprises overrunning clutch (6), described reversible electric machine (2) and other power-transmitting unit High Rotation Speeds is made when power failure emergency cut-off, driving mechanism at the end of emergency cut-off between described overrunning clutch (6) and described output shaft (12) stops operating, stop after driving mechanism between described reversible electric machine (2) and described overrunning clutch (6) is rotated further certain hour, thus play buffer function.
3. electric emergency as claimed in claim 1 or 2 cuts off actuator, it is characterized in that:
Described power-transmitting unit comprises, motor gear (4), is arranged on the reducer output shaft of described retarder (3); Intermediate gear (5), is meshed with described motor gear (4) and is connected in described overrunning clutch (6); And clutch shaft gear (8), be connected with described intermediate gear via described overrunning clutch (6), wherein,
Described clutch shaft (7) is lengthened by clutch shaft gear (8) to form, described clutch shaft (7) and described clutch mechanism (22) are in separated state under normal circumstances, thus described hand-operating device (23) stops not turning; Need under power down mode during manually-operable, to make described clutch mechanism and described clutch shaft link together, described output shaft (12) can be rotated by the rotation of described hand-operating device.
4. electric emergency as claimed in claim 3 cuts off actuator, it is characterized in that:
Described output shaft (12) is rotated thus after opening valve by described hand-operating device (123) during power failure, described hand-operating device (123) can pin described rotating mechanism (24) with described self-locking mechanism (27), described emergency cut-off stored energy mechanism (114) also can not be closed automatically, stays open state.
5. electric emergency as claimed in claim 1 cuts off actuator, it is characterized in that:
Described emergency cut-off stored energy mechanism (114) comprises, the spring shaft gearwheel (9) be meshed with described clutch shaft gear (8), the wind spring (14) be located at the spring shaft (13) in described spring shaft gearwheel (9) and be wound on described spring shaft (13), the spring shaft gear (10) be meshed with the master gear (11) of output shaft (12)
When power supply is cut-off thus described reversible electric machine (2) can not operate, by the described wind spring (14) of described emergency cut-off stored energy mechanism (114) by the restoring force counter-rotating of spring, thus the described master gear (11) be meshed with described spring shaft gear (10) is made to drive described output shaft (12) to rotate to the direction of throttle down.
6. electric emergency as claimed in claim 5 cuts off actuator, it is characterized in that:
Described output shaft (12) has stationary positioned block (16), when described output shaft (12) forwards closed positions to, the holding down bolt (17) that described stationary positioned block (16) is fixed on described body (1) blocks thus described output shaft (12) stops operating.
7. electric emergency as claimed in claim 5 cuts off actuator, it is characterized in that:
Described output shaft (12) is fixed with standard-sized sheet cam (40), when described output shaft (12) arrives fully open position, described standard-sized sheet cam (40) touches standard-sized sheet limit switch (41), thus the described reversible electric machine (2) that breaks open directional traffic power source, described reversible electric machine (2) stops operating; Described output shaft (12) is fixed with complete shut-down cam (42), when described output shaft (12) arrives closed positions, described complete shut-down cam (43) touches complete shut-down limit switch (43), thus the pass directional traffic power source of the described reversible electric machine (2) that breaks, described reversible electric machine (2) stops operating.
8. electric emergency as claimed in claim 1 cuts off actuator, it is characterized in that:
The described self-locking mechanism (27) of described support (20) is stage clip, fixator pins (25) is installed in the outside of described support, described fixator pins (25) the described stage clip of upper cover (27), described fixator pins (25) moves axially in described bracket holes.
9. electric emergency as claimed in claim 8 cuts off actuator, it is characterized in that:
Described Manual revolving gear comprises: handwheel (23), and the fixed plate (24) for being fixed on described support (20), and described fixed plate (24) and described handwheel (23) rotate integrally;
Described fixator pins (25) is inserted in the elongated hole of described fixed plate (24),
When described handwheel (23) is to evolution to rotation, described fixator pins (25) ejects from the elongated hole of described fixed plate (24), thus described handwheel (23) can continue to evolution to rotation;
Rotated to direction, pass by described handwheel (23) when needs are closed, when needing to keep certain aperture, described fixator pins (25) is inserted in described fixed plate (24) elongated hole and can keeps open state.
10. electric emergency as claimed in claim 8 cuts off actuator, it is characterized in that:
Clutch mechanism (22) is the hand wheel shaft (22) for installing described handwheel (23), described hand wheel shaft (22) is formed with the shrinkage pool of the front end for inserting described clutch shaft (7),
When to when pressing down described handwheel (23), described clutch shaft (7) is inserted in the shrinkage pool of described hand wheel shaft (22), thus described clutch shaft (7) and described hand wheel shaft (22) can rotate simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587992.8U CN204099690U (en) | 2014-09-22 | 2014-09-22 | Electric emergency cuts off actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587992.8U CN204099690U (en) | 2014-09-22 | 2014-09-22 | Electric emergency cuts off actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099690U true CN204099690U (en) | 2015-01-14 |
Family
ID=52268120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420587992.8U Expired - Fee Related CN204099690U (en) | 2014-09-22 | 2014-09-22 | Electric emergency cuts off actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508693A (en) * | 2014-09-22 | 2016-04-20 | 北京佳和康华科技有限公司 | Electric emergent cutting-off actuation mechanism |
-
2014
- 2014-09-22 CN CN201420587992.8U patent/CN204099690U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508693A (en) * | 2014-09-22 | 2016-04-20 | 北京佳和康华科技有限公司 | Electric emergent cutting-off actuation mechanism |
| CN105508693B (en) * | 2014-09-22 | 2020-04-10 | 北京佳和康华科技有限公司 | Electric emergency cut-off actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20200922 |