CN112228205A - Silicon oil clutch with fan capable of automatically adjusting speed - Google Patents
Silicon oil clutch with fan capable of automatically adjusting speed Download PDFInfo
- Publication number
- CN112228205A CN112228205A CN202011221388.XA CN202011221388A CN112228205A CN 112228205 A CN112228205 A CN 112228205A CN 202011221388 A CN202011221388 A CN 202011221388A CN 112228205 A CN112228205 A CN 112228205A
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- CN
- China
- Prior art keywords
- fan
- clutch
- end cover
- shell
- rear end
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/042—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using fluid couplings
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a silicone oil clutch with a fan capable of automatically adjusting speed, which comprises a clutch main body, a solenoid, a control valve rod and a fan structure, wherein a front end cover and a rear end cover in the clutch main body are connected through clamping, a separating disc is arranged in the front end cover, a plurality of connecting holes are formed in a connecting seat, a shaft core is arranged in a shell, a permanent magnet and a rotating speed sensor are arranged in the shell, a wire body is connected above the shell, the other end of the wire body is connected with a wire pipe, a connecting rod is arranged between the wire pipe and the shell, a fan seat of the fan structure is arranged on the right side of the rear end cover through a fixing bolt, and fan blades are arranged on. But this silicon oil clutch of automatic speed regulation of fan, fan structure pass through fan seat fixed mounting on rear end cap right side, follow the rotation when the clutch main part rotates, cool down the engine on right side, fan stall when the clutch main part does not rotate, reduce consumption and noise.
Description
Technical Field
The invention relates to the technical field of silicone oil clutches, in particular to a silicone oil clutch with a fan capable of automatically adjusting speed.
Background
The silicone oil clutch is a device which takes silicone oil as a medium and utilizes the high viscosity characteristic of the silicone oil to transmit torque, the silicone oil clutch senses the temperature of air through a temperature sensor so as to control the separation and the connection of the silicone oil clutch, when the temperature of the air is low, the silicone oil does not flow, the fan clutch is in a separation state, the clutch shell does not rotate along with the driving plate, the clutch shell only rotates under the friction action of a bearing, namely, a fan fixed with the clutch shell rotates along with the driving plate. When the air temperature is high, the silicon oil enters between the driving plate and the driven plate, the fan clutch is connected due to the viscosity of the silicon oil, the clutch shell rotates together with the driving plate, namely, the fan fixed with the clutch shell rotates, and therefore the function of adjusting the temperature of the engine is achieved.
In the existing silicone oil clutch, the temperature change of an engine is generally sensed through a bimetallic temperature sensing unit, and then a metal sheet is deformed to open an oil hole so that silicone oil enters a working cavity, but the temperature sensing is not accurate enough, and the metal sheet responds to the temperature change to have a longer process, so that the fan blades cannot be rotated in time or the fan stops rotating.
Disclosure of Invention
The invention aims to provide a silicone oil clutch with a fan capable of automatically adjusting speed, and aims to solve the problems that the temperature change of an engine is generally sensed by a bimetallic temperature sensing unit in the existing silicone oil clutch proposed in the background technology, and then a metal sheet is deformed to open an oil hole to enable silicone oil to enter a working cavity, but the temperature sensing is not accurate enough, and the metal sheet has a longer process in response to the temperature change, so that fan blades cannot be rotated in time or the rotation of the fan is stopped.
In order to achieve the purpose, the invention provides the following technical scheme: a silicone oil clutch with a fan capable of automatically regulating speed comprises a clutch main body, a solenoid, a control valve rod and a fan structure,
the clutch comprises a clutch main body, wherein the clutch main body comprises a front end cover, a rear end cover, a working cavity, a fixing bolt, a connecting seat, connecting holes, connecting grooves, a driving disc, a separating disc, oil holes and an oil return pipe;
the clutch comprises a solenoid, wherein the solenoid comprises a connecting ring, a shaft core, a bearing, a coil, an annular circuit breaker, a shell cover plate, a permanent magnet, a rotating speed sensor, a line body, a shell, a line pipe, a connecting rod and a temperature sensor, the solenoid is installed on the left side of a clutch main body through the connecting ring, the shaft core is installed inside the shell, the bearing is arranged outside the right end of the shaft core, the coil is installed outside the middle of the shaft core, the annular circuit breaker is installed at the left end of the shaft core, the shell cover plate is arranged at the left end of the annular circuit breaker, the permanent magnet and the rotating speed sensor are arranged in the shell, the line body is connected above the shell, the line pipe is connected to;
the control valve rod comprises an iron sheet, an elastic sheet and a valve rod mounting hole, the control valve rod is mounted on the left side of the separating disc in the clutch main body, and the iron sheet of the control valve rod is fixedly connected with the elastic sheet in a riveting mode;
the fan structure comprises a fan seat and fan blades, wherein the fan seat of the fan structure is installed on the right side of the rear end cover through fixing bolts, and the fan blades are arranged on the fan seat.
Preferably, the split disc is provided with an oil hole.
Preferably, a closed working cavity is formed between the front end cover and the rear end cover, an oil return pipe is arranged below the working cavity, and a one-way valve is arranged in the oil return pipe.
Preferably, the left end of the connecting seat penetrates through the rear end cover to be connected with the driving disc, and the right end of the connecting seat is connected with the engine through the connecting hole and the connecting groove.
Preferably, the shaft core penetrates through the shell and is connected with the connecting ring.
Preferably, the annular circuit breaker rotates synchronously with the shaft core, the connecting ring, the front end cover, the rear end cover and the fan structure.
Preferably, the gear of the ring breaker cuts the magnetic field of the permanent magnet.
Preferably, the solenoid is connected with the control assembly through a wire body.
Preferably, valve rod mounting holes are formed in the iron sheet and one end of the elastic sheet, the control valve rod is fixed in the front end cover through the valve rod mounting holes, and the other end of the elastic sheet is matched with the oil hole of the separating disc.
Compared with the prior art, the invention has the beneficial effects that: the silicone oil clutch of the fan can automatically regulate the speed,
(1) the solenoid is arranged at the left end of the clutch main body through the connecting ring, when the clutch main body does not work, the solenoid is in a low level state, namely a power-off state, no electric power exists in a coil in the solenoid, namely a magnetic field cannot be generated, and when the magnetic force does not act, the elastic sheet on the control valve rod normally covers the oil hole to prevent silicon oil from entering the working cavity;
(2) the clutch comprises a clutch body, a clutch main body, a driving plate, a rear end cover, a connecting ring, a control assembly, a temperature sensor, a control assembly and a clutch cover, wherein the temperature sensor is arranged above a shell of a solenoid and used for detecting the ambient temperature, when the temperature is too high, a signal is sent to the control assembly, the control assembly is used for electrifying the solenoid, the coil works to generate magnetic force, the magnetic force is transmitted to an iron sheet of a control valve rod through the shaft core and the connecting ring, the iron sheet sucks the joint part of an elastic sheet and an oil hole, so that silicon oil enters a working cavity, a torque is generated between the silicon oil and the driving plate;
(3) the oil return pipe is arranged below the working cavity, after the silicone oil enters the working cavity, the clutch main body starts to rotate, the silicone oil is thrown to two ends of the working cavity under the action of centrifugal force, and the silicone oil returns to the left end of the separating disc through the oil return pipe and enters the working cavity through the oil hole again to reciprocate in a circulating manner, so that the loss of the silicone oil is reduced;
(4) the solenoid is arranged at the left end of the clutch shell, so that enough space is provided for the connection between the connecting seat and the engine, and the installation space of the device is reduced;
(5) be provided with the fan structure, the fan structure passes through fan seat fixed mounting on rear end cap right side, follows the rotation when the clutch main part rotates, cools down to the engine on right side, and fan stall reduces consumption and noise when the clutch main part does not rotate.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
figure 2 is a schematic view of the solenoid, annular circuit breaker and wire body configuration of the present invention;
FIG. 3 is a schematic view of the front end cover, the split plate and the oil hole configuration of the present invention;
FIG. 4 is a schematic view of the split disk and control valve stem configuration of the present invention;
FIG. 5 is a schematic perspective view of a control valve stem according to the present invention;
FIG. 6 is a schematic front view of the present invention.
In the figure: 1. the clutch comprises a clutch main body, 11, a front end cover, 12, a rear end cover, 13, a working cavity, 14, a fixing bolt, 15, a connecting seat, 16, a connecting hole, 17, a connecting groove, 18, a driving disc, 19, a separating disc, 110, an oil hole, 111, an oil return pipe, 2, a solenoid, 21, a connecting ring, 22, a shaft core, 23, a bearing, 24, a coil, 25, an annular breaker, 26, a shell cover plate, 27, a permanent magnet, 28, a rotating speed sensor, 29, a wire body, 210, a shell, 211, a wire pipe, 212, a connecting rod, 213, a temperature sensor, 3, a control valve rod, 31, an iron sheet, 32, a spring sheet, 33, a valve rod mounting hole, 4, a fan structure, 41, a fan seat, 42 and fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a silicone oil clutch with a fan capable of automatically adjusting speed is disclosed, as shown in figure 1, figure 3 and figure 4, a clutch main body 1 comprises a front end cover 11, a rear end cover 12, a working cavity 13, a fixing bolt 14, a connecting seat 15, a connecting hole 16, a connecting groove 17, a driving disc 18, a separating disc 19, an oil hole 110 and an oil return pipe 111, the front end cover 11 and the rear end cover 12 in the clutch main body 1 are connected through clamping, a closed working cavity 13 is formed between the front end cover 11 and the rear end cover 12, the oil return pipe 111 is arranged below the working cavity 13, a one-way valve is arranged in the oil return pipe 111, silicone oil can conveniently flow back to the left side of the separating disc 19 to prevent the clutch main body 1 from continuously rotating, the separating disc 19 is arranged in the front end cover 11, the oil hole 110 is arranged on the separating disc 19, silicone oil can conveniently enter the working cavity 113 through the oil hole 110, the driving disc 18, connecting seat 15 is provided with a plurality of connecting holes 16, connecting groove 17 is formed in connecting seat 15, the left end of connecting seat 15 penetrates through rear end cover 12 and is connected with driving disc 18, and the right end of connecting seat 15 is connected with the engine through connecting holes 16 and connecting groove 17, so that clutch body 1 is conveniently connected with the engine.
As shown in fig. 1, 2, 5 and 6, the solenoid 2 includes a connection ring 21, a shaft core 22, a bearing 23, a coil 24, a ring-shaped circuit breaker 25, a housing cover plate 26, a permanent magnet 27, a rotation speed sensor 28, a wire body 29, a housing 210, a wire tube 211, a connection rod 212 and a temperature sensor 213, the solenoid 2 is installed on the left side of the clutch main body 1 through the connection ring 21, the shaft core 22 is installed inside the housing 210, the shaft core 22 penetrates through the housing 210 and is connected with the connection ring 21, which is beneficial for installation of the solenoid 2, the bearing 23 is installed outside the right end of the shaft core 22, the coil 24 is installed outside the middle of the shaft core 22, the ring-shaped circuit breaker 25 is installed at the left end of the shaft core 22, the ring-shaped circuit breaker 25 rotates synchronously with the shaft core 22, the connection ring 21, the front cover 11, the rear cover 12 and the fan structure 4, which is convenient for, a permanent magnet 27 and a rotation speed sensor 28 are arranged in a shell 210, a gear of an annular circuit breaker 25 cuts a magnetic field of the permanent magnet 27 to facilitate transmission of magnetic force, a line body 29 is connected above the shell 210, a solenoid 2 is connected with a control assembly through the line body 29 to facilitate control of starting and stopping in the solenoid 2 through the control assembly, the other end of the line body 29 is connected with a line tube 211, a connecting rod 212 is arranged between the line tube 211 and the shell 210, a temperature sensor 213 is arranged above the shell 210, a control valve rod 3 comprises an iron sheet 31, an elastic sheet 32 and a valve rod mounting hole 33, the control valve rod 3 is arranged at the left side of a separating disc 19 in a clutch main body 1, the iron sheet 31 and one end of the elastic sheet 32 are both provided with the valve rod mounting hole 33, the control valve rod 3 is fixed in a front end cover 11 through the valve rod mounting hole 33, the other end of the elastic sheet 32 is, make the silicon oil loss in the device reduce, riveting fixed connection between iron sheet 31 of control valve rod 3 and shell fragment 32, fan structure 4 includes fan seat 41 and flabellum 42, and fan seat 41 of fan structure 4 passes through fixing bolt 14 to be installed on rear end cap 12 right side, and is equipped with flabellum 42 on fan seat 41.
The working principle is as follows: the model of the rotating speed sensor 28 is GSH900, the model of the temperature sensor 213 is PT-100, when the silicone oil clutch with the fan capable of automatically adjusting speed is used, firstly, the clutch body 1 is connected with an engine through a connecting hole 16 and a connecting groove 17 on a connecting seat 15 on the right side of a rear end cover 12, then, the fan seat 4 is fixed with a fixing bolt 14, the fan structure 4 is fixed on the rear end cover 12, then, a solenoid 2 is fixedly connected with the clutch body 1 through the threaded connection of a connecting ring 21 and a front end cover 11, then, the temperature sensor 213 in the upper part of a shell 210 of the solenoid 2 is started, the temperature sensor 213 senses the air temperature change, when the temperature of the engine is overhigh, the ambient temperature is increased, the temperature sensor 213 transmits a signal to a control assembly, the control assembly energizes the solenoid 2 through a wire body 29, a coil 24 works to generate magnetic force, the magnetic force is transmitted to the iron sheet 31 of the control valve rod 3 through the shaft core 22 and the connecting ring 21, the iron sheet 31 sucks up the joint of the elastic sheet 32 and the oil hole 110, so that the silicon oil enters the working cavity 13, torque is generated between the silicon oil and the driving disc 18, the clutch main body 1 and the driving plate 18 rotate together, and the fan blade 42 on the rear end cover 12 is driven to rotate, so as to cool the engine, the silicon oil in the working cavity 13 is thrown to two ends of the working cavity 13 under the action of centrifugal force while the clutch main body 1 rotates, the silicon oil returns to the left end of the separating disc 19 through the oil return pipe 111 and enters the working cavity 13 through the oil hole 110 again for cycle reciprocating, so that the loss of the silicon oil is reduced, when the temperature of the engine returns to normal, the temperature sensor 213 transmits a signal to the control assembly again, the control assembly disconnects the electric support in the solenoid 2, so that the magnetic field, and then the iron sheet 31 and the spring sheet 32 are not adsorbed any more, one end of the spring sheet 32 is continuously attached to the oil hole 110, so that the silicone oil is prevented from entering the working cavity 13 to cause the loss of the silicone oil, the residual silicone oil in the working cavity 13 is discharged through the oil return pipe 111, the line pipe 211 arranged in the solenoid 2 plays a role of protecting the line body 29, the connecting rod 212 plays a role of fixing the position between the line pipe 211 and the shell 210, and the shell cover plate 26 covers the electrical element inside the shell 210 to play a role of protecting the electrical element.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a but silicon oil clutch of fan automatic speed governing, includes clutch main part (1), solenoid (2), control valve rod (3) and fan structure (4), its characterized in that:
the clutch comprises a clutch main body (1), wherein the clutch main body (1) comprises a front end cover (11), a rear end cover (12), a working cavity (13), a fixing bolt (14), a connecting seat (15), connecting holes (16), connecting grooves (17), a driving disc (18), a separating disc (19), an oil hole (110) and an oil return pipe (111), the front end cover (11) and the rear end cover (12) in the clutch main body (1) are connected through clamping, the separating disc (19) is arranged in the front end cover (11), the driving disc (18) is arranged in the rear end cover (12), the connecting seat (15) is arranged on the right side of the rear end cover (12), the connecting seat (15) is provided with a plurality of connecting holes (16), and the connecting grooves (17) are formed in the connecting seat (15);
the electromagnetic clutch comprises a solenoid (2), wherein the solenoid (2) comprises a connecting ring (21), a shaft core (22), a bearing (23), a coil (24), an annular circuit breaker (25), a shell cover plate (26), a permanent magnet (27), a rotating speed sensor (28), a wire body (29), a shell (210), a wire pipe (211), a connecting rod (212) and a temperature sensor (213), the solenoid (2) is installed on the left side of a clutch main body (1) through the connecting ring (21), the shaft core (22) is installed inside the shell (210), the bearing (23) is arranged outside the right end of the shaft core (22), the coil (24) is installed outside the middle of the shaft core (22), the annular circuit breaker (25) is installed at the left end of the shaft core (22), the shell cover plate (26) is arranged at the left end of the annular circuit breaker (25), the permanent magnet (27) and the rotating speed, a wire body (29) is connected above the outer shell (210), the other end of the wire body (29) is connected with a wire tube (211), a connecting rod (212) is installed between the wire tube (211) and the outer shell (210), and a temperature sensor (213) is arranged above the outer shell (210);
the control valve rod (3) comprises an iron sheet (31), an elastic sheet (32) and a valve rod mounting hole (33), the control valve rod (3) is mounted on the left side of the separating disc (19) in the clutch main body (1), and the iron sheet (31) and the elastic sheet (32) of the control valve rod (3) are fixedly connected in a riveting mode;
fan structure (4), fan structure (4) are including fan seat (41) and flabellum (42), fan seat (41) of fan structure (4) are installed on rear end housing (12) right side through fixing bolt (14), and are equipped with flabellum (42) on fan seat (41).
2. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the split disc (19) is provided with an oil hole (110).
3. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: a closed working cavity (13) is formed between the front end cover (11) and the rear end cover (12), an oil return pipe (111) is arranged below the working cavity (13), and a one-way valve is arranged in the oil return pipe (111).
4. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the left end of the connecting seat (15) penetrates through the rear end cover (12) to be connected with the driving disc (18), and the right end of the connecting seat (15) is connected with the engine through a connecting hole (16) and a connecting groove (17).
5. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the shaft core (22) penetrates through the shell (210) and is connected with the connecting ring (21).
6. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the annular circuit breaker (25) rotates synchronously with the shaft core (22), the connecting ring (21), the front end cover (11), the rear end cover (12) and the fan structure (4).
7. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the gear of the annular breaker (25) cuts the magnetic field of the permanent magnet (27).
8. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: the solenoid (2) is connected with the control component through a wire body (29).
9. The silicone oil clutch with the fan capable of automatically regulating the speed as claimed in claim 1, is characterized in that: valve rod mounting hole (33) have all been seted up to the one end of iron sheet (31) and shell fragment (32), and control valve rod (3) pass through valve rod mounting hole (33) and fix in front end housing (11), the other end of shell fragment (32) cooperatees with oilhole (110) of separating dish (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221388.XA CN112228205A (en) | 2020-11-05 | 2020-11-05 | Silicon oil clutch with fan capable of automatically adjusting speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221388.XA CN112228205A (en) | 2020-11-05 | 2020-11-05 | Silicon oil clutch with fan capable of automatically adjusting speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112228205A true CN112228205A (en) | 2021-01-15 |
Family
ID=74122068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011221388.XA Withdrawn CN112228205A (en) | 2020-11-05 | 2020-11-05 | Silicon oil clutch with fan capable of automatically adjusting speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112228205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202882A (en) * | 2021-04-27 | 2021-08-03 | 东风马勒热***有限公司 | Heat dissipation type silicone oil clutch |
| CN115217860A (en) * | 2022-07-29 | 2022-10-21 | 苏州睿昕汽车配件有限公司 | Novel silicone oil clutch |
-
2020
- 2020-11-05 CN CN202011221388.XA patent/CN112228205A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202882A (en) * | 2021-04-27 | 2021-08-03 | 东风马勒热***有限公司 | Heat dissipation type silicone oil clutch |
| CN113202882B (en) * | 2021-04-27 | 2022-03-18 | 东风马勒热***有限公司 | Heat dissipation type silicone oil clutch |
| CN115217860A (en) * | 2022-07-29 | 2022-10-21 | 苏州睿昕汽车配件有限公司 | Novel silicone oil clutch |
| CN115217860B (en) * | 2022-07-29 | 2023-06-23 | 苏州睿昕汽车配件有限公司 | Silicon oil clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210115 |
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| WW01 | Invention patent application withdrawn after publication |