CN207098872U - Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position - Google Patents
Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position Download PDFInfo
- Publication number
- CN207098872U CN207098872U CN201720572967.6U CN201720572967U CN207098872U CN 207098872 U CN207098872 U CN 207098872U CN 201720572967 U CN201720572967 U CN 201720572967U CN 207098872 U CN207098872 U CN 207098872U
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- magnet
- hall
- hall switch
- motor
- magnet ring
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Abstract
The utility model discloses the external rotor permanent magnet synchronous machine that a kind of integrated magnetic coder and Hall switch determine position, including stator axis, fore bearing, stator pressing ring, stator, permanent magnet, rotor, bearing afterwards, permanent magnetism briquetting, multipair pole magnet ring, magnet ring holding tray, encoder nacelle, magnetic coder and its peripheral circuit, Hall switch and its peripheral circuit, Hall magnet, control board, multi-pole magnet-ring magnetizing direction is axial charging, the multipair pole magnet ring center of circle overlaps with the center of circle of axle, magnetic coder is placed on control panel, magnet ring holding tray overlaps with the center of circle of permanent magnetism briquetting, permanent magnetism briquetting, multipair pole magnet ring, magnet ring holding tray, rotor, axle concentric, stator is flume structure, angle of bevel is 15 °.Integrated magnetic coder and Hall switch of the present utility model determine that the external rotor permanent magnet synchronous machine of position is compact-sized, positioning precision is high, position sensor occupies little space, not by greasy dirt and vibration interference.
Description
Technical field
It the utility model is related to technical field of motors, and in particular to a kind of integrated magnetic coder and Hall switch determine position
External rotor permanent magnet synchronous machine.
Background technology
The mode that external rotor permanent magnet synchronous machine obtains position typically uses high-resolution position sensor, for example rotates
Transformer, absolute optical encoder or incremental photoelectric encoder, the performance of these sensors is easily by high temperature, tide
The influence of the adverse circumstances such as wet, greasy dirt, and photoelectric encoder is frangible easily affected by vibrations.Rotary transformer size compared with
Greatly, so as to increase motor volume, the stability of motor operation is influenceed.
Utility model content
The defects of for prior art, the purpose of this utility model are the provision of a kind of integrated magnetic coder and Hall and opened
Close the external rotor permanent magnet synchronous machine for determining position, it is intended to solve rotary transformer, absolute optical encoder or incremental
Photoelectric encoder performance is easily influenceed by adverse circumstances such as high temperature, humidity, greasy dirts, and photoelectric encoder it is frangible easily by
To the influence of vibration, rotary transformer size is larger, so as to increase motor volume, the problem of influenceing the stability of motor operation；
External rotor permanent magnet synchronous machine provided by the utility model has positional precision high, and occupancy installing space is small, shock resistance, antivibration
The advantages of dynamic, oil rub resistance.
The utility model provides a kind of integrated magnetic coder and Hall switch and determines the synchronous electricity of the external rotor permanent magnet of position
Machine, including：The static module of motor rotary module, motor and the connection for connecting motor rotary module and the static module of motor
Part；Motor rotary module includes：Rotor and sensor rotation module；Wherein, rotor includes：The machine of interconnection
Shell and permanent magnet；The sensor rotation module includes：Permanent magnetism briquetting, magnet ring holding tray, Hall magnet and multipair pole magnet ring, institute
State and be fixedly connected on the outside of permanent magnetism briquetting with the casing, is fixedly connected on the inside of the permanent magnetism briquetting with the magnet ring holding tray, institute
Magnet ring holding tray is stated with the casing synchronous rotary；The Hall magnet and described multipair is fixed with the magnet ring holding tray
Pole magnet ring so that the Hall magnet and the multipair pole magnet ring are with rotor synchronous rotary；The static module bag of motor
Include：Motor stator and the static module of sensor；The motor stator includes：The stator and axle being mutually permanently connected, described fixed
Winding is provided with son；The static module of sensor includes：Encoder nacelle and control board, the encoder nacelle and
The axle is fixedly connected, and the control board, which is placed in the encoder nacelle and fixed with the encoder nacelle, to be connected
Connect；The control board is used to DC inverter into three-phase alternating current and supplying stator winding so that motor normal work.
Further, the control board includes：Encoder and Hall switch, the encoder are used for reaction magnetic ring
Produce rotor-position A square-wave signals and B square-wave signals；The Hall switch is used to sense the Hall magnet generation rotor-position
Zero signal.
Further, connection member includes：Bearing and fore bearing afterwards, the rear bearing are used to connect the casing and institute
State axle；The fore bearing is used to connect the axle and the permanent magnetism briquetting.
Further, stator is flume structure, and angle of bevel is 15 °.
Further, Hall magnet is placed in magnet ring holding tray, and Hall switch is placed in control board, Hall
The magnetizing direction of magnet is along motor axial direction, and Hall magnet is placed on the position of face Hall switch, whenever Hall magnet is gone to
The underface of Hall switch, Hall switch output high level, when Hall magnet exports low electricity away from Hall switch, Hall switch
Flat, the output signal of Hall switch is connected to single-chip microcomputer, whenever single-chip microcomputer receives the rising edge signal of Hall switch, shows Hall magnetic
Body is rotated to the underface of Hall switch, using this position as motor position signal origin.
Further, magnetic coder produces the A square-wave signals of 90 ° of mutual deviation and B square-wave signals, multi-pole magnet-ring rotate a circle
The square-wave signal in 3520 cycles is produced, single-chip microcomputer reads the zero point that the position of Hall switch trailing edge rotates as motor, single
The number of piece machine register start recording a-signal and B signal, at the time of each single-chip microcomputer reads 3520 a-signals and B signal,
Motor rotates to zero point again, while single-chip microcomputer reads Hall switch trailing edge and then will deposit the single-chip microcomputer of a-signal and B signal
Register is reset, and the register counts from zero again, and so on；By reading a-signal or B letters in a Machine cycle
Number number determine the absolute position of motor, can be obtained by the number that Hall switch low level trailing edge is read in a period of time
To the rotating speed of motor.Motor turns clockwise, 90 ° of the advanced B signal of a-signal, motor rotate counterclockwise, then the advanced a-signal of B signal
90 °, by reading A, the lead lag relationship of B signal determine the steering of motor.
By the contemplated above technical scheme of the utility model, compared with prior art, due to using Hall magnet, suddenly
Your sensor, Hall magnet ring and magnetic coder obtain the mode of rotor-position so that the motor rotor position of acquisition is more accurate, phase
Rotor-position is obtained by infrared ray than photoelectric encoder, thus photoelectric encoder is frangible and is easily disliked by humidity, greasy dirt etc.
The influence of bad environment, the contemplated scheme of the utility model patent obtain motor rotor position by magnetic field, thus not by tide
The adverse circumstances such as wet, greasy dirt influence, and firm in structure, and reliability is high；Compared to rotary transformer, the utility model patent uses
Scheme small volume.It is in light weight, magnetic coder and Hall magnet can be integrated in external rotor permanent magnet synchronous machine so that outer
Rotor structure is more compact, and reliability is higher, and to sum up, external rotor permanent magnet synchronous machine provided by the utility model has positional precision
Height, it is small to take installing space, the advantages of shock resistance, anti-vibration, oil rub resistance.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is multipair pole magnet ring schematic diagram of the present utility model；
Fig. 3 is that multipair pole magnet ring of the present utility model is placed on the schematic diagram that magnet ring places ring.
Wherein, 1 is rear bearing, and 2 be casing, and 3 be permanent magnet, and 4 be stator, and 5 be permanent magnetism briquetting, and 6 be magnet ring holding tray, 7
It is Hall switch for Hall magnet, 8,9 be encoder nacelle, and 10 be control board, and 11 be magnetic coder, and 12 be multipair pole magnetic
Ring, 13 be fore bearing, and 14 be axle, and 15 be stator pressing ring.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Integrated magnetic coder and Hall switch provided by the utility model determine the external rotor permanent magnet synchronous machine bag of position
Include：Fixed by casing, set of permanent magnets into rotor, permanent magnetism briquetting, magnet ring holding tray, multipair pole magnet ring and rotor, by stator,
Encoder nacelle, control board, magnetic coder, Hall switch, Hall magnet, axle, the stator pressing ring composition static module of motor,
The motor rotary module and the connection member of static module being made up of rear bearing, fore bearing, wherein, multipair pole magnet ring is fixed on magnetic
In ring holding tray, magnet ring holding tray coordinates with permanent magnetism briquetting screw thread to be fixed, and permanent magnetism briquetting and casing screw thread coordinate fixation, and motor turns
Son rotation drives multipair pole magnet ring rotation；Magnetic coder and Hall switch are placed in control board, and control board is fixed
In encoder nacelle, encoder nacelle coordinates with axle thread fixes, and axle and stator stationary are motionless；Multipair pole magnet ring fills for axial direction
Magnetic, multipair pole magnet ring follow axle along the circumferential direction to rotate, and magnetic coder transfixion, the lower surface of magnetic coder is apart from multipair pole
The upper surface 0.5mm of magnet ring, magnetic coder sense multipair pole magnet ring NS alternatings, produce A square-wave signals and the B side of 90 ° of mutual deviation
Ripple signal, multi-pole magnet-ring, which rotates a circle, can produce the square-wave signal in 3520 cycles, and corresponding electromechanics is rotated by 360 °；Pass through
Single-chip microcomputer reads A square-wave signals or the quantity of B square-wave signals determines the mechanical angle that motor rotates.
Hall magnet is placed in magnet ring holding tray, and Hall switch is placed in control board, and Hall magnet magnetizes
Direction is along motor axial direction, and Hall magnet is placed on the position of face Hall switch, whenever Hall magnet goes to Hall switch
Underface, Hall switch output high level, when Hall magnet is away from Hall switch, Hall switch output low level, Hall switch
Output signal be connected to single-chip microcomputer, whenever single-chip microcomputer receives the rising edge signal of Hall switch, show that Hall magnet is rotated to suddenly
The underface of your switch, using this position as motor position signal origin.
Magnetic coder produces the A square-wave signals and B square-wave signals of 90 ° of mutual deviation, and multi-pole magnet-ring, which rotates a circle, to be produced
The square-wave signal in 3520 cycles, single-chip microcomputer read the zero point that the position of Hall switch trailing edge rotates as motor, single-chip microcomputer
The number of register start recording a-signal and B signal, at the time of each single-chip microcomputer reads 3520 a-signals and B signal, motor
Rotate again to zero point, while single-chip microcomputer reads Hall switch trailing edge and then deposits the single-chip microcomputer for depositing a-signal and B signal
Device is reset, and the register counts from zero again, and so on.By reading a-signal or B signal in a Machine cycle
Number determines the absolute position of motor, and electricity can be obtained by the number that Hall switch low level trailing edge is read in a period of time
The rotating speed of machine.Motor turns clockwise, 90 ° of the advanced B signal of a-signal, motor rotate counterclockwise, then 90 ° of the advanced a-signal of B signal,
By reading A, the lead lag relationship of B signal determine the steering of motor.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is tightly explaining
The utility model, it is not used to limit the utility model.In addition, institute in each embodiment of the utility model disclosed below
As long as the technical characteristic being related to does not form conflict can and is mutually combined before each other.
As shown in figure 1, a kind of integrated magnetic coder and Hall switch determine that the external rotor permanent magnet synchronous machine of position includes：
The static module of motor rotary module, motor and the connection member for connecting motor rotary module and the static module of motor；
Motor rotary module includes：Rotor and sensor rotation module；Wherein, rotor includes：Casing 2 and forever
Magnet 3, both lean on gluing company.Sensor rotation module includes：Permanent magnetism briquetting 5, magnet ring holding tray 6, Hall magnet 7 and multipair pole
Magnet ring 12, the outside of permanent magnetism briquetting 5 and the screw thread of casing 2, which coordinate, to be fixed, and inner side and the cooperation of the screw thread of magnet ring holding tray 6 are fixed, and are played solid
Determining permanent magnet prevents permanent magnet axial float, and plays the connection member of casing 2 and magnet ring holding tray 6 so that magnet ring is placed
Disk 6 is with the synchronous rotary of casing 2.Hall magnet 7 and multipair pole magnet ring 12 are fixed with by glue so that Hall magnetic in magnet ring holding tray 6
Body 7 and multipair pole magnet ring 12 are with rotor synchronous rotary.
The static module of motor includes：Motor stator and the static module of sensor；Wherein, motor stator includes：Stator 4 and axle
14, stator 4 and axle 14 are fixed by 502 glue, there is winding on stator, and the rotor composition of stator winding electrifying and useful magnet is forever
Magnetic-synchro motor.The static module of sensor includes：Encoder nacelle 9 and control board 10, encoder nacelle 9 and axle thread are matched somebody with somebody
Close and fix, control board 10 is placed in encoder nacelle 9, is coordinated with the screw thread of encoder nacelle 9 and is fixed.Control board 10
DC inverter is supplied into stator winding into three-phase alternating current so that motor normal work, be provided with volume in control board 10
Code device 11 and Hall switch 8, encoder 11 and Hall switch 8 are welded in control board 10, and encoder 11 is used for sensing magnetic
Ring produces rotor-position A square-wave signals and B square-wave signals, and Hall switch 8 senses Hall magnet 7 and produces rotor-position zero point letter
Number.
Connection member includes：Bearing 1 and fore bearing 13 afterwards, rear bearing 1 are used for connecting casing 2 and axle 14, and fore bearing 13 is used
Come connecting shaft 14 and permanent magnetism briquetting 5.
As shown in Fig. 2 be multipair pole magnet ring schematic diagram, the magnetizing direction of multipair pole magnet ring 12 is axial charging, black region
Domain represents N poles, and white portion represents S poles, and magnet ring is uniformly divided into 22 N poles and 22 S poles, is divided into equivalent to rotor
Each scope in 44 position ranges is divided into 80 parts by 44 position ranges, magnetic coder again, produces A square-wave signals and B
Square-wave signal, so, turn a Machine cycle equivalent to rotor, magnetic coder senses 3520 A square-wave signals and B square waves letter
Number.
In the utility model embodiment, as shown in figure 3, multipair pole magnet ring 12 and Hall magnet 7 be with rotor synchronous rotary,
Magnetic coder transfixion, apart from the upper surface 0.5mm of multipair pole magnet ring, magnetic coder senses more for the lower surface of magnetic coder
Pole magnet ring NS is replaced, produces the A square-wave signals and B square-wave signals of 90 ° of mutual deviation, multi-pole magnet-ring, which rotates a circle, can produce 3520
The square-wave signal in individual cycle, corresponding electromechanics are rotated by 360 °；A square-wave signals or B square-wave signals are read by single-chip microcomputer
Quantity determines the position that rotor rotates.
Hall magnet is placed in magnet ring holding tray, and Hall switch is placed in control board, and Hall magnet magnetizes
Direction is along motor axial direction, and Hall magnet is placed on the position of face Hall switch, whenever Hall magnet proceeds to Hall switch
Underface, Hall switch output high level, when Hall magnet is away from Hall sensor, Hall sensor output low level, suddenly
You are connected to single-chip microcomputer at the output signal of switch, whenever single-chip microcomputer receives the rising edge signal of Hall sensor, show Hall magnet
Rotation is to the underface of Hall switch, using this position as motor position signal origin.
Magnetic coder produces the A square-wave signals and B square-wave signals of 90 ° of mutual deviation, and multi-pole magnet-ring, which rotates a circle, to be produced
The square-wave signal in 3520 cycles, single-chip microcomputer read the zero point that the position of infrared type Hall switch trailing edge rotates as motor,
The number of single-chip microcomputer register start recording a-signal and B signal, each single-chip microcomputer read 3520 a-signals and B signal when
Carve, motor rotates to zero point again, while single-chip microcomputer reads infrared type Hall switch trailing edge and then will deposit a-signal and B letters
Number single-chip microcomputer register reset, the register counts from zero again, and so on.By reading in a Machine cycle
The number of a-signal or B signal determines the absolute position of motor, by being read in a period of time under infrared type Hall switch low level
The number on drop edge can obtain the rotating speed of motor.Motor turns clockwise, 90 ° of the advanced B signal of a-signal, motor rotate counterclockwise,
Then 90 ° of the advanced a-signal of B signal, by reading A, the lead lag relationship of B signal determine the steering of motor.
Compared to traditional photoelectric encoder and rotary transformer, the utility model proposes integrated magnetic coder and Hall open
Close and determine that the mode of position make it that electric machine structure is more compact, because by the way of magnetic field induction, compared to photoelectric encoder, magnetic is compiled
Code device will not be influenceed by mal-conditions such as greasy dirt, vibrations, improve the stability of motor operation.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
To limit the utility model, any modification of all made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position, it is characterised in that including：
The static module of motor rotary module, motor and the connection member for connecting motor rotary module and the static module of motor；
The motor rotary module includes：Rotor and sensor rotation module；Wherein, rotor includes：It is connected with each other
Casing (2) and permanent magnet (3)；The sensor rotation module includes：Permanent magnetism briquetting (5), magnet ring holding tray (6), Hall magnetic
Body (7) and multipair pole magnet ring (12), permanent magnetism briquetting (5) outside are fixedly connected with the casing (2), the permanent magnetism briquetting
(5) inner side is fixedly connected with the magnet ring holding tray (6), and the magnet ring holding tray (6) is with the casing (2) synchronous rotary；
The Hall magnet (7) and the multipair pole magnet ring (12) are fixed with the magnet ring holding tray (6) so that the Hall magnet
(7) and the multipair pole magnet ring (12) is with rotor synchronous rotary；
The static module of motor includes：Motor stator and the static module of sensor；The motor stator includes：The company of interfixing
The stator (4) and axle (14) connect, winding is provided with the stator (4)；The static module of sensor includes：Encoder cabin
Body (9) and control board (10), the encoder nacelle (9) are fixedly connected with the axle (14), the control board
(10) it is placed in the encoder nacelle (9) and is fixedly connected with the encoder nacelle (9)；The control board (10)
For into three-phase alternating current and DC inverter to be supplied into stator winding so that motor normal work.
2. external rotor permanent magnet synchronous machine as claimed in claim 1, it is characterised in that the control board (10) includes：
Encoder (11) and Hall switch (8), the encoder (11) are used for reaction magnetic ring and produce rotor-position A square-wave signals and B side
Ripple signal；The Hall switch (8) is used to sense Hall magnet (7) the generation rotor-position zero signal.
3. external rotor permanent magnet synchronous machine as claimed in claim 1 or 2, it is characterised in that the connection member includes：Rear axle
(1) and fore bearing (13) are held, the rear bearing (1) is used to connect the casing (2) and the axle (14)；The fore bearing (13)
For connecting the axle (14) and the permanent magnetism briquetting (5).
4. external rotor permanent magnet synchronous machine as claimed in claim 1 or 2, it is characterised in that the stator (4) is skewed slot knot
Structure, angle of bevel are 15 °.
5. external rotor permanent magnet synchronous machine as claimed in claim 1 or 2, it is characterised in that Hall magnet (7) is placed on magnet ring
In holding tray (6), Hall switch (8) is placed in control board (10), and the magnetizing direction of Hall magnet (7) is along motor shaft
To Hall magnet (7) is placed on the position of face Hall switch (8), whenever Hall magnet (7) goes to Hall switch (8)
Underface, Hall switch (8) output high level, when Hall magnet (7) exports low electricity away from Hall switch (8), Hall switch (8)
Flat, the output signal of Hall switch (8) is connected to single-chip microcomputer, whenever single-chip microcomputer receives the rising edge signal of Hall switch (8), shows
Hall magnet (7) is rotated to the underface of Hall switch (8), using this position as motor position signal origin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572967.6U CN207098872U (en) | 2017-05-22 | 2017-05-22 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572967.6U CN207098872U (en) | 2017-05-22 | 2017-05-22 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098872U true CN207098872U (en) | 2018-03-13 |
Family
ID=61551492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720572967.6U Expired - Fee Related CN207098872U (en) | 2017-05-22 | 2017-05-22 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
Country Status (1)
| Country | Link |
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| CN (1) | CN207098872U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026539A (en) * | 2017-05-22 | 2017-08-08 | 华中科技大学 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
| CN108599470A (en) * | 2018-06-04 | 2018-09-28 | 彭希南 | A kind of open permanent-magnet brushless DC electric machine movement |
| CN108667226A (en) * | 2018-06-04 | 2018-10-16 | 彭希南 | A kind of flat three-phase permanent brshless DC motor movement |
| CN110932615A (en) * | 2018-08-30 | 2020-03-27 | 广东威灵电机制造有限公司 | Method and device for determining angle position of rotor of permanent magnet synchronous motor and motor |
| WO2020088052A1 (en) * | 2018-11-01 | 2020-05-07 | 贝兹维仪器(苏州)有限公司 | Electromagnetic drive motor and rotary steering drilling tool |
| FR3128072A1 (en) * | 2021-10-07 | 2023-04-14 | Safran Electronics & Defense | Rotating electric machine, force feedback stick and associated aircraft |
-
2017
- 2017-05-22 CN CN201720572967.6U patent/CN207098872U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026539A (en) * | 2017-05-22 | 2017-08-08 | 华中科技大学 | Integrated magnetic coder and Hall switch determine the external rotor permanent magnet synchronous machine of position |
| CN107026539B (en) * | 2017-05-22 | 2024-04-19 | 华中科技大学 | Outer rotor permanent magnet synchronous motor with position determined by integrating magnetic encoder and Hall switch |
| CN108599470A (en) * | 2018-06-04 | 2018-09-28 | 彭希南 | A kind of open permanent-magnet brushless DC electric machine movement |
| CN108667226A (en) * | 2018-06-04 | 2018-10-16 | 彭希南 | A kind of flat three-phase permanent brshless DC motor movement |
| CN108667226B (en) * | 2018-06-04 | 2020-02-14 | 彭希南 | Flat three-phase permanent magnet brushless direct current motor core |
| CN108599470B (en) * | 2018-06-04 | 2020-02-14 | 彭希南 | Open permanent magnet brushless direct current motor core |
| CN110932615A (en) * | 2018-08-30 | 2020-03-27 | 广东威灵电机制造有限公司 | Method and device for determining angle position of rotor of permanent magnet synchronous motor and motor |
| CN110932615B (en) * | 2018-08-30 | 2021-06-29 | 广东威灵电机制造有限公司 | Method and device for determining angle position of rotor of permanent magnet synchronous motor and motor |
| WO2020088052A1 (en) * | 2018-11-01 | 2020-05-07 | 贝兹维仪器(苏州)有限公司 | Electromagnetic drive motor and rotary steering drilling tool |
| FR3128072A1 (en) * | 2021-10-07 | 2023-04-14 | Safran Electronics & Defense | Rotating electric machine, force feedback stick and associated aircraft |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |