CN208585075U - One kind being coaxially integrated electric drive vehicle bridge - Google Patents
One kind being coaxially integrated electric drive vehicle bridge Download PDFInfo
- Publication number
- CN208585075U CN208585075U CN201821131117.3U CN201821131117U CN208585075U CN 208585075 U CN208585075 U CN 208585075U CN 201821131117 U CN201821131117 U CN 201821131117U CN 208585075 U CN208585075 U CN 208585075U
- Authority
- CN
- China
- Prior art keywords
- assembly
- motor
- deceleration mechanism
- differential
- wheel hub
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The utility model discloses one kind to be coaxially integrated electric drive vehicle bridge, including deceleration mechanism assembly, motor assembly, electric machine controller, right brake assembly and left brake assembly, the side of motor assembly is provided with electric machine controller, the side of motor assembly and electric machine controller is provided with deceleration mechanism assembly, the both ends of deceleration mechanism assembly are connected separately with left brake assembly and right brake assembly, motor axis center, transmission output shaft center and wheel hub axis center are conllinear, entire drive system center of gravity and the bigoted very little in axle center, radial inclined square can be effectively reduced, enhance system structure reliability；System altitude is integrated, substantially reduces arrangement occupied space, more regular, more abundant space is provided for battery arrangement, effectively improves vehicle performance；System altitude is integrated, saves some mechanical component and a large amount of electrical fittings, while effectively reducing unsprung mass, substantially increases electrical reliability and effectively reduces system cost.
Description
Technical field
The utility model relates to a kind of vehicle bridge, and in particular to one kind is coaxially integrated electric drive vehicle bridge.
Background technique
With the development of new-energy automobile market, electro-motive vehicle kind is more and more wider, and market is to mating traditional technology
Promotion demand is also more more and more urgent.Existing electric drive axle product mainly uses two kinds of structure types: one is power drive mechanisms
It is rigidly coupled with vehicle bridge, motor and transmission main shaft are parallel with hub spindle.Its drawback is that drive system center of gravity and hub spindle support
Center-biased is excessive, forms the great inclined square to vehicle bridge, very big to structural strength and service life negative effect, and influences logical
Cross performance.Another kind is using independent suspension system, and dynamical system is independently arranged, transmits power by two semiaxis.Its drawback
It is that structure is complicated, at high cost, bearing capacity is limited, can not promote effective charge material coefficient of discharge, thereby reduce battery utilization efficiency.
Utility model content
The utility model provides one kind and is coaxially integrated electric drive vehicle bridge, solves the problems in background technique.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
The utility model one kind is coaxially integrated electric drive vehicle bridge, including deceleration mechanism assembly, motor assembly, motor control
Device, right brake assembly and left brake assembly, the side of the motor assembly are provided with electric machine controller, the motor assembly
The side of electric machine controller is provided with deceleration mechanism assembly, side bung of the deceleration mechanism assembly far from motor assembly is left
Wheel hub pipe beam connects left brake assembly, and side of the motor assembly far from deceleration mechanism assembly is connected by right wheel hub pipe beam
Right brake assembly；The motor assembly includes rotor and motor housing, and the rotor is hollow shaft, the motor
Through there is right wheel hub axle, the right wheel hub axle is connected with revolver hub axle, institute close to the side of deceleration mechanism assembly for the inside of rotor
It states motor housing and the side of deceleration mechanism assembly is provided with end housing among motor, the motor housing is far from deceleration mechanism
The side of assembly is provided with motor tail end cover, be equipped between end housing and motor tail end cover among the motor motor stator and
Rotor, be respectively arranged on the inside of the bearing block of end housing and motor tail end cover among the motor No.1 electricity secret seal and
Be respectively arranged on the outside of No. two electricity secret seals, the No.1 electricity secret seal and No. two electricity secret seals No.1 motor bearings and
No. two motor bearings；The structure of the deceleration mechanism assembly is double parallel axis single speed than structure, and the deceleration mechanism assembly includes
Driving gear and deceleration mechanism shell, the driving gear are fixedly connected with rotor by spline, and the driving gear
It is meshed with deceleration mechanism two axis driven tooth, the driving gear transmits power to differential by two shaft gear axis of deceleration mechanism
Device assembly, the two sides of the differential assembly are respectively arranged with No.1 differential bearing and No. two differential bearings, and the No.1
Differential bearing is set in the outside of revolver hub axle, and No. two differential bearings are set in the outside of right wheel hub axle, described to subtract
Go out shaft end on the outside of fast mechanism shell and motor tail end cover and is provided with No.1 sealing ring and No. two sealing rings, the deceleration mechanism shell
Be internally provided with two shaft gear axis of deceleration mechanism, and the two shaft gear axis of deceleration mechanism is arranged through two axis driven tooths, described
The both ends of two shaft gear axis are respectively arranged with two axle bearing of No.1 deceleration mechanism and No. two deceleration mechanism axle bearings.
As a kind of optimal technical scheme of the utility model, the No.1 differential bearing is mounted on deceleration mechanism shell
Body.
As a kind of optimal technical scheme of the utility model, No. two retarder bearings are mounted on differential mechanism jackshaft
It holds on seat.
As a kind of optimal technical scheme of the utility model, the motor assembly, the output shaft of deceleration mechanism assembly, a left side
Hub spindle and the transmission shaft of right wheel hub axle, right brake assembly and left brake assembly coaxial line arrangement.
As a kind of optimal technical scheme of the utility model, the diameter of the through-hole inside the rotor is greater than right wheel
The outer diameter of hub axle.
The utility model beneficial effect achieved is: motor axis center, transmission output shaft center and wheel hub axis center
Collinearly, entire drive system center of gravity and the bigoted very little in axle center can effectively reduce radial inclined square, enhance system structure reliability；System
It unites highly integrated, substantially reduces arrangement occupied space, more regular, more abundant space is provided for battery arrangement, is effectively improved
Vehicle performance；System altitude is integrated, saves some mechanical component and a large amount of electrical fittings, effectively reduces the same of unsprung mass
When, it substantially increases electrical reliability and effectively reduces system cost.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is that the utility model one kind is coaxially integrated electric drive vehicle bridge shape stereoscopic schematic diagram；
Fig. 2 is a kind of horizontal cross-sectional schematic diagram for being coaxially integrated electric drive vehicle bridge of the utility model；
Fig. 3 is a kind of cross-sectional view for being coaxially integrated electric drive vehicle bridge of the utility model；
Fig. 4 is a kind of structure chart for the differential mechanism middle bearing bracket for being coaxially integrated electric drive vehicle bridge of the utility model；
In figure: 1, revolver hub axle；2, left wheel hub Guan Liang；3, deceleration mechanism assembly；3.1, deceleration mechanism outer housing；3.2, one
Number two axle bearing of deceleration mechanism；3.3, two shaft gear axis of deceleration mechanism；3.4, two axis driven tooth of deceleration mechanism；3.5, No. two decelerations
Two axle bearing of mechanism；3.6, No.1 differential bearing；3.7 differential assembly；3.8, No. two differential bearings；3.9, driving tooth
Wheel；4, motor assembly；4.1, end housing among motor；4.2, motor stator；4.3, rotor；4.4, No.1 motor bearings；
4.5, No.1 electricity secret seal；4.6, motor housing；4.7, No. two electricity secret seals；4.8, No. two motor bearings；4.9, motor
Tail end cover；5, electric machine controller assembly；6, right wheel hub Guan Liang；7, right wheel hub axle；8, right brake assembly；9, No.1 sealing ring；
10, No. two sealing rings；11, left brake assembly；12, differential mechanism middle bearing bracket.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment: as shown in Figs 1-4, the utility model one kind is coaxially integrated electric drive vehicle bridge, including deceleration mechanism assembly
3, motor assembly 4, electric machine controller 5, right brake assembly 8 and left brake assembly 11, the side of motor assembly 4 are provided with electricity
The side of machine controller 5, motor assembly 4 and electric machine controller 5 is provided with deceleration mechanism assembly 3, and deceleration mechanism assembly 3 is far from electricity
The side bung left wheel hub pipe beam 2 of machine assembly 4 connects left brake assembly 11, motor assembly 4 far from deceleration mechanism assembly 3 one
Side connects right brake assembly 8 by right wheel hub pipe beam 6, right brake assembly 8, left brake assembly 11, left wheel hub pipe beam 2,
Right wheel hub pipe beam 6, motor assembly 4 and deceleration mechanism assembly 3 etc. are serially arranged along bridge axle, central axis is conllinear, electric machine controller 5
The angle space then formed using two aixs cylinder outlets of deceleration mechanism assembly 3 and motor assembly 4, it is compact to connect with electric machine casing
It connects；Motor assembly 4 include rotor 4.3 and motor housing 4.6, rotor 4.3 be hollow shaft, rotor 4.3 it is interior
Through there is right wheel hub axle 7, right wheel hub axle 7 is connected with revolver hub axle 1, motor housing 4.6 close to the side of deceleration mechanism assembly 3 in portion
The side of deceleration mechanism assembly 3 is provided with end housing 4.1 among motor, motor housing 4.6 is far from deceleration mechanism assembly 3
Side is provided with motor tail end cover 4.9, is equipped with motor stator 4.2 between end housing 4.1 and motor tail end cover 4.9 among motor
With rotor 4.3, No.1 motor is respectively arranged on the inside of the bearing block of motor centre end housing 4.1 and motor tail end cover 4.9
Sealing ring 4.5 and No. two electricity secret seals 4.7, by motor internal insulation at separate space, No.1 electricity secret seal 4.5 and No. two
No.1 motor bearings 4.4 and No. two motor bearings 4.8 are respectively arranged on the outside of electricity secret seal 4.7；The knot of deceleration mechanism assembly 3
Structure is double parallel axis single speed than structure, and deceleration mechanism assembly 3 includes driving gear 3.9 and deceleration mechanism shell 3.1, driving gear
3.9 are fixedly connected with rotor 4.3 by spline, and driving gear 3.9 is meshed with deceleration mechanism two axis driven tooth 3.4,
Driving gear 3.9 transmits power to differential assembly 3.7 by two shaft gear axis 3.3 of deceleration mechanism, and two pairs of gear pairs can be real
Now speed ratio adjusts twice, and the two sides of differential assembly 3.7 are respectively arranged with No.1 differential bearing 3.6 and No. two differential bearings
3.8, and the No.1 differential bearing 3.6 is set in the outside of revolver hub axle 1, No. two differential bearings 3.8 are set in right wheel hub
Go out shaft end on the outside of the outside of axis 7, deceleration mechanism shell 3.1 and motor tail end cover 4.9 and is provided with No.1 sealing ring 9 and No. two sealings
Circle 10,3 inner cavity of deceleration mechanism assembly is completely cut off for separate space, and deceleration mechanism shell 3.1 is internally provided with deceleration mechanism two
Shaft gear axis 3.3, and the two shaft gear axis 3.3 of deceleration mechanism is arranged through two axis driven tooths 3.4, the two of two shaft gear axis 3.3
End is respectively arranged with two axle bearing 3.2 of No.1 deceleration mechanism and No. two deceleration mechanism axle bearings 3.5, and Fig. 2, Fig. 3 illustrate this example
The drive mechanism of utilization, driving gear 3.9 by spline and 4.3 axis connection of rotor, two shaft gear axis 3.3 of deceleration mechanism with
Central axis Parallel offset, driving gear 3.9 are engaged with two axis driven tooth 3.4 of deceleration mechanism, and two shaft gear axis 3.3 of deceleration mechanism is simultaneously
Subtract gear mesh by master and transmits power to differential assembly 3.7；3.7 outside No.1 differential bearing 3.6 of differential assembly peace
On deceleration mechanism outer housing 3.1, No. two differential bearings 3.8 by motor side are mounted on differential mechanism middle bearing bracket 12
On, differential mechanism middle bearing bracket 12 is imperfect rotary flange structure, shown in Fig. 4, in driving gear 3.9 and two axis of deceleration mechanism
3.4 site of engagement vacancy of driven tooth goes out space, is compromises structural strength, the non-uniformly distributed mounting hole of Flange Plane, with motor intermediate ends
Shell connection, and designing has a positioning pin to guarantee that axis can be effectively mounted in installation accuracy, 12 structure of differential mechanism middle bearing bracket
It holds, and two rotary parts of driving tooth and differential mechanism is isolated, avoid movement interference；Outside 5 shell of electric machine controller assembly and motor
The design of 4.6 binding face of shell has cable-through hole, and by crossing line set connection, crossing line set and the shell at both ends has sealing structure, so that electric
Machine inner cavity is connected to controller inner cavity, but is isolated with external environment, and the electrical connection of controller and motor passed through line set threading,
The strong and weak wirning harness connecting with drive system only needs set of insert.
No.1 differential bearing 3.6 is mounted on deceleration mechanism outer housing 3.1.
No. two retarder bearings 3.8 are mounted on differential mechanism middle bearing bracket 12.
Motor assembly 4, the output shaft of deceleration mechanism assembly 3, revolver hub axle 1 and right wheel hub axle 7 transmission shaft, right brake
Assembly 8 and 11 coaxial line of left brake assembly arrangement, so that power input and the power output after deceleration torque increase are positioned at identical
Axis.
The diameter of through-hole inside rotor 4.3 is greater than the outer diameter of right wheel hub axle 7, which can turn from motor
Sub 4.3 sides pass inwardly through, and connect with differential mechanism one end, and be freely rotated.
Working principle: after driving intention information is passed over by the harness connecting with electric machine controller 5, electric machine controller
5 commutation inversion forceful electric power signals, control motor assembly 4 rotate；Rotor 4.3 by driving gear 3.9, two axis of deceleration mechanism from
Moving gear 3.4, two shaft gear axis 3.3 of deceleration mechanism transfer power to differential assembly 3.7, and realize deceleration torque increase；With difference
Revolver hub axle 1, the right wheel hub axle 7 of the fast connection of device assembly 3.7 transfer power to wheel, to realize vehicle driving；Right wheel hub
Axis 7 passes through among rotor 4.3, so that it is conllinear to realize that power outputs and inputs axis, the advantages of realizing this patent.
This kind of one kind is coaxially integrated electric drive vehicle bridge, and motor axis center, transmission output shaft center and wheel hub axis center are total
Line, entire drive system center of gravity and the bigoted very little in axle center can effectively reduce radial inclined square, enhance system structure reliability；System
It is highly integrated, arrangement occupied space is substantially reduced, more regular, more abundant space is provided for battery arrangement, is effectively improved whole
Vehicle performance；System altitude is integrated, saves some mechanical component and a large amount of electrical fittings, effectively reduces the same of unsprung mass
When, it substantially increases electrical reliability and effectively reduces system cost.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (5)
1. one kind is coaxially integrated electric drive vehicle bridge, including deceleration mechanism assembly (3), motor assembly (4), electric machine controller (5), the right side
Brake assembly (8) and left brake assembly (11), which is characterized in that the side of the motor assembly (4) is provided with motor control
The side of device (5) processed, the motor assembly (4) and electric machine controller (5) is provided with deceleration mechanism assembly (3), the speed reducer
Side bung left wheel hub Guan Liang (2) connection left brake assembly (11) of the structure assembly (3) far from motor assembly (4), the motor
Assembly (4) passes through the right brake assembly (8) of right wheel hub Guan Liang (6) connection far from the side of deceleration mechanism assembly (3)；The motor
Assembly (4) includes rotor (4.3) and motor housing (4.6), and the rotor (4.3) is hollow shaft, and the motor turns
Through having right wheel hub axle (7), the right wheel hub axle (7) is connected with close to the side of deceleration mechanism assembly (3) for the inside of sub (4.3)
Revolver hub axle (1), the motor housing (4.6) are provided with end housing among motor close to the side of deceleration mechanism assembly (3)
(4.1), the motor housing (4.6) is provided with motor tail end cover (4.9), the electricity far from the side of deceleration mechanism assembly (3)
Motor stator (4.2) and rotor (4.3) are installed between end housing (4.1) and motor tail end cover (4.9) among machine, it is described
No.1 electricity secret seal (4.5) are respectively arranged on the inside of the bearing block of end housing (4.1) and motor tail end cover (4.9) among motor
With No. two electricity secret seals (4.7), set respectively on the outside of the No.1 electricity secret seal (4.5) and No. two electricity secret seals (4.7)
It is equipped with No.1 motor bearings (4.4) and No. two motor bearings (4.8)；The structure of the deceleration mechanism assembly (3) is double parallel axis
Single speed includes driving gear (3.9) and deceleration mechanism shell (3.1), the driving tooth than structure, the deceleration mechanism assembly (3)
Wheel (3.9) is fixedly connected with rotor (4.3) by spline, and the driving gear (3.9) and deceleration mechanism two axis are driven
Tooth (3.4) is meshed, and the driving gear (3.9) transmits power to differential mechanism by two shaft gear axis (3.3) of deceleration mechanism
The two sides of assembly (3.7), the differential assembly (3.7) are respectively arranged with No.1 differential bearing (3.6) and No. two differential mechanisms
Bearing (3.8), and the No.1 differential bearing (3.6) is set in the outside of revolver hub axle (1), No. two differential bearings
(3.8) it is set in the outside of right wheel hub axle (7), goes out shaft end on the outside of the deceleration mechanism shell (3.1) and motor tail end cover (4.9)
It is provided with No.1 sealing ring (9) and No. two sealing rings (10), the deceleration mechanism shell (3.1) is internally provided with deceleration mechanism
Two shaft gear axis (3.3), and the two shaft gear axis (3.3) of deceleration mechanism is arranged through two axis driven tooths (3.4), the two axis tooth
The both ends of wheel shaft (3.3) are respectively arranged with two axle bearing (3.2) of No.1 deceleration mechanism and No. two deceleration mechanism axle bearings (3.5).
2. one kind according to claim 1 is coaxially integrated electric drive vehicle bridge, which is characterized in that the No.1 differential bearing
(3.6) it is mounted on deceleration mechanism outer housing (3.1).
3. one kind according to claim 1 is coaxially integrated electric drive vehicle bridge, which is characterized in that No. two retarder bearings
(3.8) it is mounted on differential mechanism middle bearing bracket (12).
4. one kind according to claim 1 is coaxially integrated electric drive vehicle bridge, which is characterized in that the motor assembly (4) subtracts
The output shaft of fast mechanism assembly (3), the transmission shaft of revolver hub axle (1) and right wheel hub axle (7), right brake assembly (8) and left system
Dynamic device assembly (11) coaxial line arrangement.
5. one kind according to claim 1 is coaxially integrated electric drive vehicle bridge, which is characterized in that the rotor (4.3)
The diameter of internal through-hole is greater than the outer diameter of right wheel hub axle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131117.3U CN208585075U (en) | 2018-07-12 | 2018-07-12 | One kind being coaxially integrated electric drive vehicle bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131117.3U CN208585075U (en) | 2018-07-12 | 2018-07-12 | One kind being coaxially integrated electric drive vehicle bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208585075U true CN208585075U (en) | 2019-03-08 |
Family
ID=65541510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821131117.3U Active CN208585075U (en) | 2018-07-12 | 2018-07-12 | One kind being coaxially integrated electric drive vehicle bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208585075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674160A (en) * | 2018-07-12 | 2018-10-19 | 上海欣原汽车技术开发有限公司 | One kind being coaxially integrated electric drive vehicle bridge |
| CN109878312A (en) * | 2019-04-22 | 2019-06-14 | 苏州同捷汽车科技发展有限公司 | A kind of integrated coaxial electric driver |
-
2018
- 2018-07-12 CN CN201821131117.3U patent/CN208585075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674160A (en) * | 2018-07-12 | 2018-10-19 | 上海欣原汽车技术开发有限公司 | One kind being coaxially integrated electric drive vehicle bridge |
| CN109878312A (en) * | 2019-04-22 | 2019-06-14 | 苏州同捷汽车科技发展有限公司 | A kind of integrated coaxial electric driver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107487175B (en) | Integrated hub motor driving unit | |
| CN106864251B (en) | Wheel motor drive device | |
| CN104377881A (en) | Integrated driving device for new energy vehicle | |
| CN102555773A (en) | Low-floor gate-type wheel-side motor rear axle for electric bus | |
| CN208585075U (en) | One kind being coaxially integrated electric drive vehicle bridge | |
| CN210502248U (en) | Low-speed large-torque electric wheel device and electric vehicle | |
| CN107323248A (en) | A kind of electric motor coach electronic wheel system of Dual-motors Driving | |
| CN103009977A (en) | Drive device for electric vehicle with direct drive motor | |
| CN203267779U (en) | Electricity-driven vehicle | |
| CN105751880A (en) | Direct-driving type driving device of electric vehicle | |
| CN209441178U (en) | A kind of Electric Motor Wheel assembly apparatus and automobile based on embedded deceleration mechanism | |
| CN108674160A (en) | One kind being coaxially integrated electric drive vehicle bridge | |
| CN209365877U (en) | A kind of coaxial bi-motor electricity drive driving axis | |
| CN107276307B (en) | Electromechanical integrated permanent magnet driving system | |
| CN209492375U (en) | Universal electric drive axle | |
| CN212012387U (en) | Compact planetary gear differential speed reduction motor | |
| CN209987734U (en) | Low-speed large-torque electric wheel device and electric automobile | |
| CN108128142A (en) | A kind of wheel hub rim structure, Electric Motor Wheel and vehicle for Electric Motor Wheel | |
| CN106849570A (en) | A kind of permanent magnetism double stators and double rotors high torque density wheel hub motor | |
| CN106655672A (en) | Permanent magnet double-stator-rotor high-torque-density hub motor device | |
| CN109130837A (en) | A kind of electronic wheel apparatus of low-speed big and automobile | |
| CN206542274U (en) | A kind of electric machine casing of new-energy automobile | |
| CN115580079A (en) | Three-stage planetary reduction hub motor driving device and automobile | |
| CN204794643U (en) | External rotor switch reluctance in -wheel motor | |
| CN204459009U (en) | A kind of main gearbox assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |