CN202508732U - Synchronous gear-free traction machine for elevator - Google Patents
Synchronous gear-free traction machine for elevator Download PDFInfo
- Publication number
- CN202508732U CN202508732U CN2011205398089U CN201120539808U CN202508732U CN 202508732 U CN202508732 U CN 202508732U CN 2011205398089 U CN2011205398089 U CN 2011205398089U CN 201120539808 U CN201120539808 U CN 201120539808U CN 202508732 U CN202508732 U CN 202508732U
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- magnetic resistance
- elevator
- rotating shaft
- iii
- resistance groove
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a synchronous gear-free traction machine for an elevator, and belongs to the technical field of elevator driving. According to the technical scheme, the synchronous gear-free traction machine comprises traction wheels (1), a base (4), brake disks (5), a brake (6) and a driving host machine of the synchronous gear-free traction machine for the elevator, wherein the driving host machine is a synchronous reluctance motor (2); the synchronous reluctance motor (2) and the traction wheels (1) are coaxially arranged on the same rotating shaft (3); the traction wheels (1) are fixedly arranged at the torque output end of the synchronous reluctance motor (2); and the rotating shaft (3) is fixed on the base (4) through bearings (31 and 32). The synchronous reluctance motor is creatively applied to the field of elevator driving; the synchronous gear-free traction machine for the elevator has the advantages of low speed, large torque, low starting current, small torque fluctuation, stable rotating speed and the like, can frequently rotate clockwise and anticlockwise and is simple in structure and process, small in size, light in weight and low in cost.
Description
Technical field
The utility model relates to a kind of elevator and uses synchnorous gearless dragging machine, belongs to the actuation techniques field of elevator.
Background technology
Towing machine is the actuator of elevator, and it is installed in the machine room, on the building top layer, is the drag device of elevator generally, and its rope sheave is through rope traction car and counterweight.
As the core component of elevator, the towing machine technology has been passed through worm and gear transmission towing machine, planetary wheel and helical wheel transmission towing machine, three development phase of permanent magnetism synchronization gear wheel free transmission towing machine.Worm and gear transmission towing machine, driving efficiency is lower, has only about 70%.Planetary wheel and helical wheel transmission towing machine, driving efficiency can reach 90%, but requires the Gear Processing precision high, and cost is also than higher, and these two kinds of towing machine products are not used in China widely, are eliminated gradually.
The anodontia towing machine of permanent-magnet synchronous mainly is made up of permasyn morot, traction sheave and brake system.It adopts high performance permanent magnetic materials and special electric machine structure, has low speed, big torque characteristics.Therefore, elevator industry widespread use at home and abroad.But permanent-magnet synchnorous gearless dragging machine adopts rare-earth permanent magnet material.If towing machine design or improper use; Permanent magnet or under the armature reaction effect that big rush current produces, or might produce the irreversible demagnetization phenomenon when violent mechanical shock when excessive temperature; The permanent-magnet synchnorous gearless dragging machine performance is reduced significantly, even can not use.In addition, rare earth material belongs to national scarce resource, and the prices of raw and semifnished materials are high, cause the permanent magnet price very high, and then make the permanent-magnet synchnorous gearless dragging machine price exceed the geared machine of Asynchronous Motor Driving far away.These shortcomings have all greatly restricted the application of permanent-magnet synchnorous gearless dragging machine; Along with China to the concentrated control of rare earth material and the consumption gradually of rare earth material.Permanent magnet applications is more and more lower in the possibility of civilian industry.Therefore, under the situation that guarantees present permanent-magnet synchnorous gearless dragging machine feature performance benefit, it is necessary to study novel gearless machine without permanent-magnet material.
Through the retrieval Chinese patent; Publication number is CN1738152A, the name patent of invention that is called " the bonded axial overlapping sheet synchronous reluctance machine of magnet steel additive excitation " and publication number is that CN101039059A, name are called that the patent of invention of " synchronous magnetic resistance motor that has the rotor topology of novelty " is corresponding has described two kinds of different synchronization reluctance motors; But foregoing is different fully with the technical scheme of the utility model; Especially above-mentioned two kinds of technical schemes just to the application of electrical motor or motor, do not disclose synchronous magnetic resistance motor and are applied to any technology contents in the elevator traction machine.
The utility model content
The purpose of the utility model is for solving the above-mentioned defective of permanent-magnet synchnorous gearless dragging machine, and a kind of simple in structure, function admirable, cost is low, reliability is high synchronous reluctance gearless machine are provided.The technical scheme of the utility model is:
elevator is used synchnorous gearless dragging machine; Comprise traction sheave 1, pedestal 4, brake disc 5, drg 6 and elevator driving host with synchnorous gearless dragging machine; Wherein, Said driving host is a synchronous magnetic resistance motor 2; Said synchronous magnetic resistance motor 2 and said traction sheave 1 coaxial being installed in the rotating shaft 3, said traction sheave 1 fixed and arranged is at the moment of torsion mouth of said synchronous magnetic resistance motor 2, and said rotating shaft 3 is fixed on the pedestal 4 through bearing 31,32.
Further; Said synchronous magnetic resistance motor 2 comprises stator core 20, stator winding 21, rotating shaft 3 and is enclosed within the rotor core 24 in the rotating shaft 3; Wherein, said rotor core 24 has plural magnetic pole 22 on radial section, has plural magnetic resistance groove in each magnetic pole 22I, II, III, IV, V, VI
, said magnetic resistance grooveI, II, III, IV, V, VI
Be horizontally arranged in the magnetic pole 22 said magnetic resistance groove from inside to outsideI, II, III, IV, V, VI
Axially connect rotor core 21.
Further, said rotor core 24 laminates fastening forming vertically by the discoid rotor punching that can select number, and said magnetic pole 22 is distributed on the every rotor punching, said magnetic resistance grooveI, II, III, IV, V, VI
Be horizontally arranged in this magnetic pole 22 said magnetic resistance groove from inside to outsideI, II, III, IV, V, VI
Position on every rotor punching is all identical to guarantee that the magnetic resistance fluted shaft is to connecting this rotor core 24.
said magnetic pole 22 is six, and being centrosymmetric around rotating shaft 3 is distributed on said rotor core 24 radial sections.
Six described magnetic resistance grooves are arranged in each said magnetic pole 22, and radial array does from inside to outsideI, II, III, IV, V, VI
Said magnetic resistance grooveI, II, III, IV, V, VI
Be both wings roughly U-shaped, the ship shape or arc of symmetry, near the depth of the magnetic resistance groove of said rotating shaft 3 greater than its outside magnetic resistance groove.
Said magnetic resistance grooveI, II, III, IV, V, VI
The cell body radial width unequal, near the cell body radial width of the magnetic resistance groove of said rotating shaft 3 greater than its outside magnetic resistance groove.
Have stator slot 25 on
said stator core 20 inner peripheral surfaces, said stator slot 25 is a flume structure, and stator winding 21 is arranged in this stator slot 25.
said stator winding 21 is double-deck lap wound short distance winding.
The utility model compared with prior art has the following advantages:
It is synchronous magnetic resistance motor that the utility model drives main body, has characteristics such as low speed high torque, little, the frequent rotating operation of starting current, can cancel reduction gear apparatus.
The motor rotor of the utility model does not have excitation winding, and copper loss only results from the stator winding side.Loss is low, and efficient is high, and temperature rise is low.
The utility model structure and technology are simple, and firm reliable, volume is little, in light weight, cost is low.
The utility model host computer control performance is good, torque fluctuation is little, and rotating speed is steady.
The towing machine vibration of the utility model is little, noise is low.
Description of drawings
Fig. 1 is the structural representation of synchnorous gearless dragging machine in the utility model;
Fig. 2 is the longitudinal section view of synchnorous gearless dragging machine inter-sync reluctance motor;
Fig. 3 is the structural representation of synchronous magnetic resistance motor internal rotor iron core radial section (or rotor punching).
Shown in the figure: 1: traction sheave, 2: synchronous magnetic resistance motor, 20: stator core, 21: stator winding, 22: magnetic pole, 23: rivet, 24: rotor core, 25: stator slot, 3: rotating shaft, 31-32: bearing, 4: pedestal, 5: brake disc, 51: fastener, 6: drg, I-VI: the magnetic resistance groove.
The specific embodiment
Understand for the purpose, technical scheme and the useful technique effect that make the utility model are more clear, the technology contents and the specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.Should be understood that the specific embodiment of describing in this specification sheets only is in order to explain the utility model, is not in order to limit the specific embodiment of the utility model.
As shown in Figure 1; The elevator synchnorous gearless dragging machine of the utility model comprises driving host, traction sheave 1, brake disc 5, drg 6, position detector, pedestal 4; Wherein, The driving host of this elevator gearless machine is a synchronous magnetic resistance motor 2, and in the elevator drive field, still not with the precedent of synchronous magnetic resistance motor as the towing machine driving host.Synchronous magnetic resistance motor 2 and traction sheave 1 coaxial being installed in the rotating shaft 3; Rotating shaft 3 is simultaneously as the rotor shaft of synchronous magnetic resistance motor 2, and rotor core 24 is sleeved in the rotating shaft, and stator core 20 is in the periphery of rotor core 24; Traction sheave 1 fixed and arranged is at the moment of torsion mouth of rotating shaft 3; Rotating shaft 3 utilizes bearing 31,32 to be fixed on the pedestal 4 of towing machine, and brake disc 5 utilizes fastener 51 to be fixed on the traction sheave 1, and drg 6 control brake dishes 5 are to brake towing machine.Thus; Traction sheave 1 and synchronous magnetic resistance motor 2 synchronized operations; Synchronous magnetic resistance motor 2 produces Motor torque, and rotating shaft 3 drives the operation of lift car again through traction sheave 1 output torque through the friction of traction sheave and steel rope; Can set different kinematic velocitys with range ability according to elevator car position, let elevator according to setting starting, quickening operation, constant-speed operation and braking isovel smoothness run.Driving governor adopts the operation of frequency control way control synchronous magnetic resistance motor, regulates motor output torque and rotating speed, can cancel reduction gear apparatus thus.When the elevator needs are out of service, then check brake disc 5 by drg 6, brake disc 5 passes to traction sheave 1 with power, stops towing machine to be rotated further, thereby keeps the car transfixion.
Be illustrated in figure 2 as the structural representation of driving host synchronous magnetic resistance motor 2 in the utility model towing machine; Wherein, Be positioned at the rotating shaft 3 at center and be enclosed within the rotor core 24 in the rotating shaft 3; This rotor core 24 has the magnetic pole 22 that can select number on radial section, the applicant is provided with six magnetic poles 22 in the utility model, roughly is centrosymmetric around rotating shaft 3.Like Fig. 3 is the longitudinal section view of these synchronous magnetic resistance motor 2 rotor iron cores 24, wherein, six magnetic poles 22 is arranged on rotor core 24 radial sections; Have the magnetic resistance groove that on rotor core is axial, connects more than two in each magnetic pole 22; These magnetic resistance grooves are transversely arranged from inside to outside, and in the present embodiment, the applicant selects the number of magnetic resistance groove also is set to six; Be respectively I, II, III, IV, V, VI from the inside to the outside, all magnetic resistance groove I-VI all axially connect rotor core 24.
For needs easy to process, rotor core 24 is to be combined by the rotor punching of selecting number, reaches rotor punching and laminates the formation rotor core 24 that tightens together, and is enclosed within then in the rotating shaft 3 and forms rotor.Using the number of rotor punching to look the user of service decides the requirement of rotor core; Between the rotor punching or the whole mode of welding or rivet of using of rotor punching fix; The applicant adopts rivet 23 modes to carry out the fastening rotor punching that makes to overlap together in the present embodiment; Carry out axially closely fixing to form rotor core 24, said rotor punching is that discoid high permeability material is processed, and selects to use silicon steel plate in the present embodiment; Shown in Figure 3 also is the structural representation of rotor punching; Six magnetic poles 22 are set on each sheet rotor punching, in magnetic pole 22 zones, use mould to go out six magnetic resistance groove I, II, III, IV, V, VI on each sheet rotor punching, magnetic resistance groove I, II, III, IV, V, VI are hollow on the rotor punching; The technological requirement of cooresponding magnetic resistance groove should be consistent on each sheet rotor punching; Should guarantee in the preferred implementation all has corresponding magnetic pole and magnetic resistance groove on each sheet rotor punching, and to require the position of cooresponding magnetic resistance groove on every rotor punching be identical, and shape is also roughly the same; Magnetic resistance groove I shape, size and position such as on the 1st to the N sheet rotor punching are consistent, and corresponding magnetic resistance groove I is axially to connect when can guarantee like this that rotor punching laminates into rotor core.The technological requirement of magnetic resistance groove II-VI also is like this.Magnetic resistance groove I, II, III, IV, V, VI can be linear grooves; Certainly, preferred magnetic resistance groove I-VI is roughly U-shaped, the ship shape or arc of symmetry of both wings, wherein; Near the depth of the magnetic resistance groove of rotating shaft 3 greater than magnetic resistance groove away from rotating shaft 3; Be in the depth zone near the magnetic resistance groove of rotating shaft 3 away from the magnetic resistance groove of rotating shaft 3, all magnetic resistance groove I-VI both wings summit all will be in the circumference of rotor core 24, and promptly the magnetic resistance groove can not be broken through rotor core 24; The technology difficulty of ability rotor core 24 is smaller like this, and fastness can be higher.
As shown in Figure 3, rotor punching is processed by the high magnetic conductance material silicon steel plate, and the zone between magnetic pole and the magnetic pole (d-axis q axle) just formed very high friendship axle inductance L
q, and in magnetic pole 22, magnetic resistance groove I-VI place is a hollow; Form the grooved hollow region of axial perforation on the whole at rotor punching, because the high magnetoresistive of air, then the grooved zone does not have the high permeance property of silicon steel plate; Form higher magnetic resistance district, thereby obtained lower d-axis inductance L
d, and before our key points in design that makes referrals to synchronous magnetic resistance motor just be to improve its salient pole than (being L
q/ L
d), just reached such purpose through such structural change.Through calculating; Each pole region is provided with six magnetic resistance groove I-VI; When obtaining high salient pole ratio, obtain bigger friendship, d-axis difference in inductance; But and do not mean that and to use the described technical scheme of present embodiment; Being arranged with similar problems such as what magnetic resistance grooves in the number of magnetic pole, each magnetic pole is a kind of selection of technical personnel in technological process, is arranged with the such structure design of plural magnetic resistance groove in plural magnetic pole, each magnetic pole and all belongs to the technical scheme that the utility model is protected.
In addition; As shown in Figure 2; In rotor periphery is stator core 20, the stator slot 25 (72 stator slots 25 are arranged shown in the figure) that the selection number is arranged arranged evenly on stator core 20 inner headed faces, and this stator slot 25 is a flume structure; Thereby can reduce the air gap flux density harmonic wave to a certain extent, reduce motor stray loss, additional torque, electric and magnetic oscillation and electromagnetic noise.Excitation coil is installed in the stator slot 25, and stator winding 21 adopts double-deck lap wound short distance winding, and groove is embedded in two coils that belong to different coil assembly; The pitch of two coils is shorter, further reduces the slot ripples of air gap flux density, reduces stray loss; Raise the efficiency, reduce temperature rise.
More than be the detailed explanation of center deployment with the utility model specific embodiment; The imbody of described optimal way or some characteristic; Be to be understood that for this specification sheets only be to describe the utility model through the mode that provides embodiment; In the variation of forming, existing on structure and some details of using, comprise the combination and the assembly of parts in the reality, these distortion and using all should belong in the scope that the utility model asks for protection.
Claims (9)
1.
elevator is used synchnorous gearless dragging machine; Comprise traction sheave (1), pedestal (4), brake disc (5), drg (6) and elevator driving host with synchnorous gearless dragging machine; It is characterized in that: said driving host is synchronous magnetic resistance motor (2); Said synchronous magnetic resistance motor (2) is installed in the rotating shaft (3) with said traction sheave (1) is coaxial; Said traction sheave (1) fixed and arranged is at the moment of torsion mouth of said synchronous magnetic resistance motor (2), and said rotating shaft (3) is fixed on the pedestal (4) through bearing (31,32).
2.
Elevator according to claim 1 is used synchnorous gearless dragging machine; It is characterized in that: said synchronous magnetic resistance motor (2) comprises stator core (20), stator winding (21), rotating shaft (3) and is enclosed within the rotor core (24) in the rotating shaft (3); Wherein, Said rotor core (24) has plural magnetic pole (22) on radial section, have in each magnetic pole (22) plural magnetic resistance groove (I, II, III, IV, V, VI
), said magnetic resistance groove (I, II, III, IV, V, VI
) be horizontally arranged in from inside to outside in the magnetic pole (22), said magnetic resistance groove (I, II, III, IV, V, VI
) axially connect rotor core (21).
3.
Elevator according to claim 2 is used synchnorous gearless dragging machine; It is characterized in that: said rotor core (24) laminates fastening forming vertically by the discoid rotor punching that can select number; Said magnetic pole (22) is distributed on the every rotor punching, said magnetic resistance groove (I, II, III, IV, V, VI
) be horizontally arranged in from inside to outside in this magnetic pole (22), said magnetic resistance groove (I, II, III, IV, V, VI
) position on every rotor punching is all identical to guarantee that the magnetic resistance fluted shaft is to connecting this rotor core (24).
4.
elevator according to claim 3 is used synchnorous gearless dragging machine, and it is characterized in that: said magnetic pole (22) is six, and being centrosymmetric around rotating shaft (3) is distributed on said rotor core (24) radial section.
5.
Elevator according to claim 3 is used synchnorous gearless dragging machine, it is characterized in that: in each said magnetic pole (22), have six described magnetic resistance grooves (I, II, III, IV, V, VI
), radial array from inside to outside.
6.
Use synchnorous gearless dragging machine according to claim 2,3 or 5 each described elevators, it is characterized in that: said magnetic resistance groove (I, II, III, IV, V, VI
) be roughly U-shaped, the ship shape or arc of symmetry of both wings, near the depth of the magnetic resistance groove of said rotating shaft (3) greater than its outside magnetic resistance groove.
7.
Elevator according to claim 6 is used synchnorous gearless dragging machine, it is characterized in that: said magnetic resistance groove (I, II, III, IV, V, VI
) the cell body radial width unequal, near the cell body radial width of the magnetic resistance groove of said rotating shaft (3) greater than its outside magnetic resistance groove.
8.
elevator according to claim 2 is used synchnorous gearless dragging machine; It is characterized in that: have stator slot (25) on said stator core (20) inner peripheral surface; Said stator slot (25) is a flume structure, and stator winding (21) is arranged in this stator slot (25).
9.
elevator according to claim 2 is used synchnorous gearless dragging machine, it is characterized in that: said stator winding (21) is double-deck lap wound short distance winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205398089U CN202508732U (en) | 2011-12-21 | 2011-12-21 | Synchronous gear-free traction machine for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205398089U CN202508732U (en) | 2011-12-21 | 2011-12-21 | Synchronous gear-free traction machine for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202508732U true CN202508732U (en) | 2012-10-31 |
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ID=47061230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205398089U Expired - Lifetime CN202508732U (en) | 2011-12-21 | 2011-12-21 | Synchronous gear-free traction machine for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202508732U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556809A (en) * | 2011-12-21 | 2012-07-11 | 浙江西子富沃德电机有限公司 | Synchronous gearless traction machine for elevator |
| CN103457429A (en) * | 2013-08-28 | 2013-12-18 | 日立电梯电机（广州）有限公司 | Inner rotor permanent magnet synchronous magnetic resistance type traction drive device |
| CN103663063A (en) * | 2012-09-07 | 2014-03-26 | 上海三菱电梯有限公司 | Gearless traction machine and installation and maintenance device thereof |
| CN103887921A (en) * | 2014-03-21 | 2014-06-25 | 浙江德清西传电气科技有限公司 | Motor with front-arranged brake |
| CN104386563A (en) * | 2014-11-18 | 2015-03-04 | 爱力维特驱动科技(苏州)有限公司 | Gearless traction machine with end cover |
| EP3067307A4 (en) * | 2013-11-07 | 2017-07-12 | Meidensha Corporation | Elevator hoist |
| CN110581626A (en) * | 2019-10-16 | 2019-12-17 | 南京理工大学 | Continuous vector control high-speed synchronous reluctance motor system |
-
2011
- 2011-12-21 CN CN2011205398089U patent/CN202508732U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556809A (en) * | 2011-12-21 | 2012-07-11 | 浙江西子富沃德电机有限公司 | Synchronous gearless traction machine for elevator |
| CN103663063A (en) * | 2012-09-07 | 2014-03-26 | 上海三菱电梯有限公司 | Gearless traction machine and installation and maintenance device thereof |
| CN103663063B (en) * | 2012-09-07 | 2016-01-27 | 上海三菱电梯有限公司 | The installation and maintenance device of gearless machine |
| CN103457429A (en) * | 2013-08-28 | 2013-12-18 | 日立电梯电机（广州）有限公司 | Inner rotor permanent magnet synchronous magnetic resistance type traction drive device |
| CN103457429B (en) * | 2013-08-28 | 2016-01-20 | 日立电梯电机（广州）有限公司 | Internal rotor permanent-magnetic synchronous reluctance formula traction drive unit |
| EP3067307A4 (en) * | 2013-11-07 | 2017-07-12 | Meidensha Corporation | Elevator hoist |
| CN103887921A (en) * | 2014-03-21 | 2014-06-25 | 浙江德清西传电气科技有限公司 | Motor with front-arranged brake |
| CN104386563A (en) * | 2014-11-18 | 2015-03-04 | 爱力维特驱动科技(苏州)有限公司 | Gearless traction machine with end cover |
| CN110581626A (en) * | 2019-10-16 | 2019-12-17 | 南京理工大学 | Continuous vector control high-speed synchronous reluctance motor system |
| CN110581626B (en) * | 2019-10-16 | 2022-06-10 | 南京理工大学 | Continuous vector control high-speed synchronous reluctance motor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
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| CX01 | Expiry of patent term |