CN112081855A - Viscous damper and using method thereof - Google Patents
Viscous damper and using method thereof Download PDFInfo
- Publication number
- CN112081855A CN112081855A CN202010770418.6A CN202010770418A CN112081855A CN 112081855 A CN112081855 A CN 112081855A CN 202010770418 A CN202010770418 A CN 202010770418A CN 112081855 A CN112081855 A CN 112081855A
- Authority
- CN
- China
- Prior art keywords
- generator
- energy
- viscous damper
- storage unit
- energy storage
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 230000033001 locomotion Effects 0.000 claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims abstract description 23
- 238000013016 damping Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000010248 power generation Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a viscous damper, comprising: a sealed housing, within which a damping medium is filled; the axial movement part passes through the shell along the axial sealing mode. The first end of the axial moving part extends out of the shell, the second end of the axial moving part extends out of the sleeve, and the first end and the second end are both used for connecting a vibration source. Wherein an energy generation unit, an energy storage unit and a monitoring unit are arranged in the sleeve, the energy generation unit is configured to generate energy by utilizing the movement of the axial moving part and selectively transmit the energy to the monitoring unit or the energy storage unit.
Description
Technical Field
The invention relates to a viscous damper and a use method thereof.
Background
The viscous damper is an energy dissipation and shock absorption device, has the characteristics of strong energy dissipation capacity, large stroke and the like, and is widely applied to the field of structural shock absorption of bridges, buildings, large-scale steel structures and the like.
The viscous damper has the basic working principle that damping media are extruded to flow through small holes in a piston at high speed, energy loss is generated in the flowing process, external kinetic energy is converted into heat energy of the damping media, and therefore damage of large loads such as earthquakes and strong wind to a structure is relieved. In practical life application, the running condition and the stress state of the damper need to be monitored perfectly, so that corresponding sensors can be additionally arranged on some intelligent dampers to monitor the stress and the running state of the damper, and the intelligent dampers need to be powered. For the intelligent viscous damper products, municipal power supply or private network power supply is generally adopted at present, and solar power supply is also adopted in remote areas, but the outdoor operation environment of engineering facilities such as bridges provided with dampers is severe. Especially under extreme working conditions such as earthquake, strong storm and rain, the above power supply measures are difficult to ensure stable and safe power supply, and the risk of power failure of the damper monitoring system is caused, so that the monitoring effect of the intelligent viscous damper can not be realized.
Disclosure of Invention
In view of the above technical problems, the present invention is directed to provide a viscous damper, which can convert mechanical energy of damper motion into electrical energy while achieving the function of the conventional viscous damper, so as to achieve self-powering of the viscous damper. Like this, can avoid viscous damper unstable risk of supplying power under abominable operational environment, simultaneously, after being turned into the electric energy with some load that the attenuator received, can improve viscous damper's bearing scope.
According to a first aspect of the present invention, there is provided a viscous damper comprising: a sealed housing, within which a damping medium is filled; a sleeve connected to one end of the housing; and the axial moving piece passes through the shell in an axial sealing mode, a first end of the axial moving piece extends out of the shell, a second end of the axial moving piece extends out of the sleeve, and the first end and the second end are both used for being connected with a vibration source.
Wherein an energy generation unit, an energy storage unit and a monitoring unit are arranged in the sleeve, the energy generation unit is configured to generate energy by utilizing the movement of the axial moving part and selectively transmit the energy to the monitoring unit or the energy storage unit.
In a preferred embodiment, the energy generation unit comprises a generator capable of generating electricity using the movement of the axial moving member.
In a preferred embodiment, a controller is provided within the sleeve, the controller being connected to the generator, the energy storage unit and the monitoring unit.
In a preferred embodiment, the controller is configured to cause energy to be transferred from the generator to the monitoring unit and the energy storage unit simultaneously when the amount of power generated by the generator exceeds a threshold.
In a preferred embodiment, the controller is configured to cause energy to be transferred from the generator and the energy storage unit to the monitoring unit when the amount of power generated by the generator is below the threshold.
In a preferred embodiment, the controller is configured to idle the generator after the amount of power generated by the generator exceeds a threshold and the energy storage unit is fully charged with energy.
In a preferred embodiment, the energy generation unit includes a motion conversion mechanism capable of converting an axial motion of the axial moving member into a rotational motion, and a transmission mechanism transmitting the rotational motion of the motion conversion mechanism to the generator.
In a preferred embodiment, the motion conversion mechanism includes a drive nut coupled to the second end of the axially movable member, and a drive screw disposed parallel to the axially movable member and engaged with the drive nut.
The transmission mechanism comprises a transmission gear mounted on the transmission lead screw and a gearbox engaged with the transmission gear and the generator.
In a preferred embodiment, the monitoring unit comprises a displacement sensor, a force sensor and a data wireless transmitting terminal.
In a preferred embodiment, the energy storage unit is a battery, and a rectifier is provided between the battery and the controller.
According to a second aspect of the present invention, there is provided a method of using a viscous damper, wherein:
when the power generation capacity of the generator exceeds a threshold value, enabling energy to be transmitted from the generator to the monitoring unit and the energy storage unit simultaneously;
when the power generation by the generator is below the threshold, causing energy to be transferred from the generator and the energy storage unit to the monitoring unit; and
and when the power generation amount of the generator exceeds a threshold value and the energy storage unit is fully charged with energy, idling the generator.
Drawings
The invention will now be described with reference to the accompanying drawings.
Fig. 1 shows a schematic view of a viscous damper according to the present invention.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
Fig. 1 shows a viscous damper 100 according to an embodiment of the invention. As shown in fig. 1, the viscous damper 100 includes a damper body 10, and the body 10 is a hollow rectangular housing defining an inner cavity 20 therein, and the inner cavity 20 is filled with a damping medium. A piston rod 21 is disposed in the inner chamber 20. A sleeve 30 is connected to one end (i.e., the right end in fig. 1) of the body 10.
Both a first end (left end in fig. 1) 22 and a second end (right end in fig. 1) 23 of the piston rod 21 extend axially out of the body 10. In particular, as shown in fig. 1, both the first end 22 and the second end 23 of the piston rod 21 are configured in the form of earrings for connection to a vibration source, such as a bridge or the like. The second end 23 of the piston rod 21 protrudes out of the sleeve 30. In this way, the piston rod 21 is axially movable along the body 10 and the sleeve 30 by an external force (i.e. a vibration force from a vibration source).
A piston 25 with a small hole is provided on the rod body of the piston rod 21 inside the body 10, and the piston 25 divides the inner cavity of the body 10 into a left chamber 24 and a right chamber 26. When the piston rod 21 moves in the axial direction, the damping medium flows through the small holes in the piston 24 at a high speed, and thus flows between the left chamber 23 and the right chamber 25, achieving a damping effect.
As shown in fig. 1, an energy generating unit 40 is provided in the sleeve 30. The energy generating unit 40 comprises a drive nut 42 arranged on the second end 23 of the piston rod 21 and a drive screw 44 arranged parallel to the piston rod 21 and engaging the drive nut 42. Preferably, the two ends of the drive screw 44 are fixed to the inner wall of the sleeve 30 by a bearing connection, so that the rotation of the drive screw 44 is facilitated. The drive nut 42 is fixed to the second end 23 of the piston rod 21 and is axially movable with the piston rod 21. The drive screw 44 is engaged with the drive nut 42 and can be rotated by the drive nut 42. In a preferred embodiment, a ball screw arrangement is provided between the drive nut 42 and the drive screw 44.
In addition, the energy generation unit 40 further includes a transmission gear 46 provided at an end (right end in fig. 1) of the transmission screw 44 remote from the body 10. The transmission gear 46 is also engaged with the transmission lead screw 44 and can be driven by the transmission lead screw 44 to rotate. Also, the power generation unit 40 further includes a transmission case 50 disposed below the transmission gear 46, and a generator 55 disposed below the transmission case 50. Similarly, the gearbox 50 is engaged with the transmission gear 46, and the generator 55 is engaged with the gearbox 50. With this arrangement of the power generation unit 40, the axial movement of the piston rod 22 is finally converted into a rotational movement of the generator 55, and power generation is realized.
As shown in fig. 1, a battery 60 connected to the generator 55 is also provided in the sleeve 30. In a preferred embodiment, a rectifier 65 is also connected between the battery 60 and the generator 55. When the generator 55 generates electricity, the generated ac power can be converted into dc power by the rectifier 65 and then stored in the battery 60.
In this embodiment, a monitoring unit 70 is also provided within the sleeve 30. The monitoring unit 70 includes various sensors such as a displacement sensor 28 and a force sensor 29. These sensors may be located at appropriate locations within the sleeve 30 to provide real-time monitoring of the operating conditions of the damper 100 to ensure proper operation of the damper 100. And, the monitoring unit 70 further includes a data wireless transmitting terminal 75. The data wireless transmitting terminal 75 is connected with the sensors, and can output signals transmitted by the sensors in the form of digital signals, so that data acquisition is facilitated.
Finally, a controller 80 is provided within the sleeve 30. The controller 80 is connected to both the energy storage unit 60 and the energy generation unit 40 for regulating the energy of the entire viscous damper 100.
The operation of the viscous damper 100 according to the present invention is briefly described as follows.
When the damper 100 receives a load from a vibration source, the piston rod 21 is moved in the axial direction by an external force. At this time, the driving nut 42 disposed on the piston rod 21 is moved together by the piston rod 21. This movement of the drive nut 42 causes the drive screw 44 to rotate as the drive nut 42 engages the drive screw 44. Similarly, the drive screw 44 is engaged with the drive gear 46 at the right end thereof, the drive gear 46 is engaged with the gear box 50, and the gear box 50 is engaged with the generator 55. Thus, the transmission screw 44 drives the transmission gear 46 to rotate, the transmission gear 46 drives the transmission gear 50 to rotate, and the transmission gear 50 drives the rotor of the generator 55 to rotate, so as to realize the power generation of the generator 55.
Ideally, the generator 55 is connected to the wireless data transmitting terminal 75 and various sensors to provide power to the wireless data transmitting terminal 75 and the sensors. The sensor transmits the operation parameters of the damper 100 to the wireless transmitting terminal 75 in the form of electric signals, and the wireless transmitting terminal 75 converts the electric signals into digital signals to be output, so that the operation data of the damper 100 can be monitored and collected conveniently.
However, in the actual operation process, the external load applied to the damper 100 is unstable, which results in unstable movement speed of the piston rod 21, and thus unstable electric power generated by the generator 55. Therefore, a controller 80 is provided within the sleeve 30, the controller 80 connecting both the generator 55 and the monitoring unit 70. When the amount of power generated by the generator 55 is large, for example, exceeds a predetermined threshold, the controller 80 supplies the power to the wireless transmitting terminal 75 of the monitoring unit 70 and the sensor connected thereto, and simultaneously converts the remaining power into dc power through the rectifier 65 and stores the dc power in the storage battery 60. When the amount of power generated by the generator 55 is small, for example below a predetermined threshold, the controller 80 coordinates discharging the battery 60 to maintain proper operation of the overall viscous damper 100. When the battery 60 is fully charged, the controller 80 controls the generator 55 to idle and discharge the battery 60 in coordination, thereby preventing the battery 60 from being overloaded. It is easily understood that the threshold value can be easily determined by those skilled in the art according to the specific situation of the power consumption of the monitoring unit 70.
The viscous damper 100 provided by the invention can convert mechanical energy of damper motion into electric energy while realizing the function of the traditional viscous damper, thereby realizing self-power supply of the viscous damper. Like this, can avoid viscous damper unstable risk of supplying power under abominable operational environment, simultaneously, after being turned into the electric energy with some load that the attenuator received, can improve viscous damper's bearing scope.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present 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 modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A viscous damper comprising:
a sealed housing (10) filled with a damping medium;
a sleeve (30) attached to one end of the housing; and
an axially movable member (21) passing axially through said housing in sealed relation, said axially movable member having a first end extending out of said housing and a second end extending out of said sleeve, said first and second ends being adapted for connection to a vibration source;
wherein an energy generating unit (40), an energy storage unit (60) and a monitoring unit (70) are provided within the sleeve, the energy generating unit being configured to generate energy from movement of the axially moving member and selectively transmit energy to at least one of the monitoring unit and the energy storage unit.
2. Viscous damper according to claim 1, characterized in that the energy generating unit comprises a generator (55) capable of generating electricity by means of the movement of the axial moving member.
3. The viscous damper of claim 2, wherein a controller (80) is disposed within the sleeve, the controller being connected to the generator, the energy storage unit, and the monitoring unit.
4. The viscous damper of claim 3, wherein the controller is configured to cause energy to be transferred from the generator to the monitoring unit and energy storage unit simultaneously when the amount of power generated by the generator exceeds a threshold.
5. The viscous damper of claim 3 or 4, wherein the controller is configured to transfer energy from the generator and the energy storage unit to the monitoring unit when the amount of power generated by the generator is below the threshold.
6. The viscous damper of any of claims 3 to 5, wherein the controller is configured to idle the generator after the power generation of the generator exceeds a threshold and the energy storage unit is fully charged with energy.
7. The viscous damper according to any one of claims 1 to 6, wherein the energy generation unit comprises a motion conversion mechanism capable of converting an axial motion of the axial moving member into a rotational motion, and a transmission mechanism transmitting the rotational motion of the motion conversion mechanism to the generator.
8. The viscous damper of claim 7, wherein the motion conversion mechanism comprises a drive nut (42) connected to the second end of the axial motion member, and a drive screw (44) disposed parallel to the axial motion member and engaged with the drive nut,
the drive mechanism includes a drive gear (46) mounted on the drive screw, and a gearbox (50) engaged with both the drive gear and the generator.
9. Viscous damper according to any of claims 1 to 8, characterized in that the monitoring unit comprises a displacement sensor (28), a force sensor (29) and a wireless data transmission terminal (75).
10. Viscous damper according to any of claims 3 to 9, characterized in that the energy storage unit is a battery (62), between which a rectifier (65) is provided and a controller.
11. Use of a viscous damper according to any of claims 3 to 10, wherein:
when the power generation capacity of the generator exceeds a threshold value, enabling energy to be transmitted from the generator to the monitoring unit and the energy storage unit simultaneously;
when the power generation by the generator is below the threshold, causing energy to be transferred from the generator and the energy storage unit to the monitoring unit; and
and when the power generation amount of the generator exceeds a threshold value and the energy storage unit is fully charged with energy, idling the generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770418.6A CN112081855A (en) | 2020-08-04 | 2020-08-04 | Viscous damper and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770418.6A CN112081855A (en) | 2020-08-04 | 2020-08-04 | Viscous damper and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081855A true CN112081855A (en) | 2020-12-15 |
Family
ID=73736060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010770418.6A Pending CN112081855A (en) | 2020-08-04 | 2020-08-04 | Viscous damper and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081855A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1862697A1 (en) * | 2006-05-30 | 2007-12-05 | The Technical University of Denmark (DTU) | Torsional vibration damper |
| CN102418765A (en) * | 2011-11-03 | 2012-04-18 | 重庆大学 | Self-perception, self-power supply and adaptive control magnetorheological vibration damping system |
| CN104632546A (en) * | 2014-12-05 | 2015-05-20 | 上海电机学院 | Wireless sensor energy supply device on fan blade |
| CN207176484U (en) * | 2017-09-07 | 2018-04-03 | 湖南科技大学 | A kind of electromagnetic rotating inertia mass damper |
| CN108061121A (en) * | 2018-01-08 | 2018-05-22 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
| CN207879951U (en) * | 2018-01-08 | 2018-09-18 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
-
2020
- 2020-08-04 CN CN202010770418.6A patent/CN112081855A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1862697A1 (en) * | 2006-05-30 | 2007-12-05 | The Technical University of Denmark (DTU) | Torsional vibration damper |
| CN102418765A (en) * | 2011-11-03 | 2012-04-18 | 重庆大学 | Self-perception, self-power supply and adaptive control magnetorheological vibration damping system |
| CN104632546A (en) * | 2014-12-05 | 2015-05-20 | 上海电机学院 | Wireless sensor energy supply device on fan blade |
| CN207176484U (en) * | 2017-09-07 | 2018-04-03 | 湖南科技大学 | A kind of electromagnetic rotating inertia mass damper |
| CN108061121A (en) * | 2018-01-08 | 2018-05-22 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
| CN207879951U (en) * | 2018-01-08 | 2018-09-18 | 华中科技大学 | A kind of tuning inertia mass electromagnetic damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102968127B (en) | A kind of linear drive apparatus and for the control of solar energy tracking and using method | |
| CN102410150B (en) | Mechanically-coupled mini-type hybrid wind power generating system capable of storing energy in form of compressed air | |
| CN102966336B (en) | Wind power direct-driven oil pumper | |
| CN113062486B (en) | Tuned viscous inertial mass damper with electromagnetic damping | |
| CN101642908A (en) | Passive force/moment feedback driver of man-machine interface device for controlling remote-control operation robot | |
| CN115163723B (en) | Magneto-rheological variable damping vibration attenuation energy consumption device | |
| CN108361150B (en) | Yaw control device, execution device, yaw system and yaw method | |
| CN201808064U (en) | Single degree of freedom rotating device | |
| CN112081855A (en) | Viscous damper and using method thereof | |
| CN114046223A (en) | Self-protection offshore wind power system with telescopic blades and working method thereof | |
| CN109066555B (en) | Wind vibration suppression control system for transmission line conductor | |
| CN217469693U (en) | Electric valve and alternating current asynchronous motor thereof | |
| CN210157027U (en) | Automatic change retarder of control | |
| CN112324843A (en) | Damper, shock absorber, vehicle, wave power generation device and system | |
| CN102777526B (en) | Seal type viscoelastic damper suitable for on-orbit application of spacecraft | |
| CN104454375B (en) | A kind of compressed-air energy storage wind generator system of double-rotor machine coupling | |
| CN219732377U (en) | Variable-rate STF damper based on ball screw transmission | |
| CN111304973A (en) | Composite vibration damper | |
| CN219570390U (en) | Leakage protection device of centrifugal fan | |
| KR200212985Y1 (en) | Compressed air generating device of wind power system | |
| CN219918310U (en) | Anti-leakage protection device for wire end | |
| CN110985303B (en) | High-rise building fire safety power supply unit | |
| CN109268620A (en) | A kind of pipe robot based on marmem joule thermal drivers | |
| CN212305013U (en) | Energy storage conversion power generation facility | |
| CN218717755U (en) | Multidirectional installation and debugging structure of forced draught blower sensor |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201215 |
|
| RJ01 | Rejection of invention patent application after publication |