CN112757846A - Tire pressure maintaining and adjusting system based on air suspension system - Google Patents
Tire pressure maintaining and adjusting system based on air suspension system Download PDFInfo
- Publication number
- CN112757846A CN112757846A CN202110052661.9A CN202110052661A CN112757846A CN 112757846 A CN112757846 A CN 112757846A CN 202110052661 A CN202110052661 A CN 202110052661A CN 112757846 A CN112757846 A CN 112757846A
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- Prior art keywords
- air
- tire
- valve
- switch
- switch valve
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- 239000000725 suspension Substances 0.000 title claims abstract description 32
- 230000003584 silencer Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 210000003437 trachea Anatomy 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/10—Arrangement of tyre-inflating pumps mounted on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a tire pressure maintaining and adjusting system based on an air suspension system, which consists of a silencer, a filter, an air pump, a one-way valve, a pipeline, a wire harness, a power supply, a controller, a two-position two-way exhaust valve, a two-position three-way exhaust valve switch, a plurality of pressure sensors, a wheel speed sensor, a plurality of two-position two-way switch valves, an air storage tank, a plurality of air springs, a tire, a throttle valve and an adjustable throttle valve. The invention is provided with five switch valves, the compressor is used for charging and discharging air, when the tire pressure is inconsistent or the wheel speed has deviation, the controller can control the air pump to be switched on and off, and the corresponding tire is charged to maintain the tire pressure; because the tire pressure influences the tire rigidity, the tire rigidity directly influences the comfortableness, the safety and the operation stability of the whole vehicle, and the whole vehicle is ensured to have better driving performance by combining calibration and an air suspension.
Description
Technical Field
The invention belongs to the technical field of tire pressure monitoring, and particularly relates to a novel suspension system for tire pressure maintenance and tire pressure regulation, which is combined with an air suspension system.
Background
The tire gas can reveal gradually in the use of car, need regularly go 4s shop and correct the tire pressure. The monitoring of tire pressure is very necessary, the deviation can be caused by the inconsistency of the tire pressure of left and right tires, and accidents can be caused by high-speed running. In addition, the temperature can influence the tire pressure, and the tire is easy to burst in summer. Tire pressure affects tire stiffness and ground contact, and therefore affects ride comfort and handling stability. The current tire can not automatically adjust the tire pressure and can not adjust the safety, the comfort and the operation stability. At present, the tire pressure monitoring device mainly alarms when the tire pressure is insufficient in the market, and can be inflated only when in maintenance.
Disclosure of Invention
The invention provides a tire pressure maintaining and adjusting system based on an air suspension system, which aims to solve the problem that the conventional tire cannot automatically adjust pressure. The tire pressure maintaining and regulating system can monitor the tire pressure in real time, and maintain the tire pressure to be stable when the tire pressure is insufficient, too high or the left and right tire pressures are unbalanced; with driving mode and regulating switch combination, the switch of different driving modes or different gears can guarantee to reach suitable tire pressure parameter and then guarantee travelling comfort and operating stability.
The purpose of the invention is realized by the following technical scheme:
a tire pressure maintaining and adjusting system based on an air suspension system mainly comprises a silencer 1, a filter 2, an air pump 3, a one-way valve 4, a power supply 5, a controller 6, an exhaust valve 7, an exhaust valve switch 8, a pressure sensor 9, a wheel speed sensor 10, a switch valve I11, a switch valve II 17, a switch valve III 18, a switch valve IV 19, an air storage tank 12, an air spring I13, a tire 14, a throttle valve 15, an adjustable throttle valve 16 and an air spring II 20;
the power supply 5 is respectively connected with the controller 6 and the compressor of the air suspension, and the controller 6 can control whether the power supply 5 supplies power to the compressor; the controller 6 is respectively electrically connected with the switch valve I11, the switch valve II 17, the switch valve III 18, the switch valve IV 19 and the adjustable throttle valve 16, and can be used for opening the switch valve I11, the switch valve II 17, the switch valve III 18, the switch valve IV 19 and the adjustable throttle valve 16 when the tire pressure of the tire 14 is too high, so that the air pressure of the tire 14 is stably reduced; the controller 6 is electrically connected with the pressure sensor 9 and the wheel speed sensor 10 and can receive signals of the pressure sensor 9 and signals of the wheel speed sensor 10;
the silencer 1 is connected with the pressure sensor 9 through a filter 2, an air pump 3, a one-way valve 4 and a throttle valve 15 through an air pipe; the muffler 1 is connected with one end of an exhaust valve 7 through a filter 2 by an air pipe, and the other end of the exhaust valve 7 is connected with a throttle valve 15 by the air pipe; the exhaust valve 7 is connected with an exhaust valve switch 8 through an air pipe, the exhaust valve switch 8 is connected with a switch valve I11 through an air pipe, and the switch valve I11 is connected with a tire 14 through an air pipe;
the air spring I13 is connected with the air storage tank 12 through an air pipe through a switch valve II 17 and a switch valve III 18; the air spring II 20 is connected with the pressure sensor 9 through an air pipe through a switch valve 4;
the wheel speed sensor 10 and the pressure sensor 9 are arranged in a tire 14, the pressure sensor 9 is fixed on a tire air tap, receives a pressure signal through radio frequency and is used for monitoring the air pressure of the tire 14, and the wheel speed sensor 10 receives a vehicle speed signal through a CAN bus; the air storage tank 12 and the air pump 3 can quickly supplement air to maintain the tire pressure when the air pressure of the tire 14 is insufficient.
Further, the switch valve I11, the switch valve II 17, the switch valve III 18 and the switch valve IV 19 are all of two-position two-way structures.
Further, the exhaust valve 7 is of a two-position two-way structure.
Further, the exhaust valve switch 8 is a two-position three-way structure.
Further, the number of the switching valves I11 is four.
Further, the number of the switching valves IV 19 is three.
Further, the air storage tank 12 and the compressor are used to provide an air source.
Further, when the air pressure of the air tank 12 is lower than 1000Kpa, the air pump 3 is used for air inflation.
Compared with the prior art, the invention has the beneficial effects that:
the invention does not need to install an independent air supply system, five switching valves are added on the basis of the air suspension, the compressor of the air suspension is directly utilized for inflation and deflation, when the tire pressure is inconsistent or the wheel speed has deviation, the controller can control the air pump to be opened and closed to inflate and maintain the tire pressure for the corresponding tire, and specifically, once the tire pressure monitoring sensor detects that the tire pressure is insufficient, the controller can send a command to switch on the power supply of the compressor and open the distribution valve to inflate the tire; because the tire pressure influences the tire rigidity, the tire rigidity directly influences the comfortableness, the safety and the operation stability of the whole vehicle, and the whole vehicle is ensured to have better driving performance by combining calibration and an air suspension.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an air path diagram of a tire pressure maintaining and regulating system based on an air suspension system of the present invention.
In the figure, 1, a silencer 2, a filter 3, an air pump 4, a one-way valve 5, a power supply 6, a controller 7, an exhaust valve 8, an exhaust valve switch 9, a pressure sensor 10, a wheel speed sensor 11, a switch valve I12, an air storage tank 13, an air spring I14, a tire 15, a throttle valve 16, an adjustable throttle valve 17, a switch valve II 18, a switch valve III 19, a switch valve IV 20, an air spring II 21 and a drying agent are arranged.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the tire pressure maintaining and adjusting system based on the air suspension system of the present invention mainly comprises a muffler 1, a filter 2, an air pump 3, a check valve 4, a power supply 5 (not shown), a controller 6, an exhaust valve 7, an exhaust valve switch 8, a pressure sensor 9, a wheel speed sensor 10, a switch valve i 11, a switch valve ii 17, a switch valve iii 18, a switch valve iv 19, an air tank 12, an air spring i 13, a tire 14, a throttle valve 15, an adjustable throttle valve 16, and an air spring ii 20.
The power supply 5 is connected to the controller 6 and to the compressor of the air suspension, respectively. Wherein, the compressor is provided with a relay switch connected with the controller, and the controller 6 controls the on-off of the relay to determine that the battery supplies power to the compressor.
The controller 6 is in control connection with the switch valve I11, the switch valve II 17, the switch valve III 18, the switch valve IV 19 and the adjustable throttle valve 16, and can be used for opening the switch valve I11, the switch valve II 17, the switch valve III 18, the switch valve IV 19 and the adjustable throttle valve 16 when the tire pressure of the tire 14 is too high, so that the air pressure of the tire is stably reduced, and the controller 6 is electrically connected with the pressure sensor 9 and the wheel speed sensor 10 and can be used for receiving the pressure of the pressure sensor 9 and the signal of the wheel speed sensor 10; the wheel speed sensor 10 (sensor in ESP system) receives a vehicle speed signal through a CAN bus; the pressure sensor 9 receives a pressure signal via radio frequency.
The silencer 1 is connected with the pressure sensor 9 through a filter 2, an air pump 3, a one-way valve 4 and a throttle valve 15 through an air pipe;
the muffler 1 is connected with one end of an exhaust valve 7 through a filter 2 by an air pipe, and the other end of the exhaust valve 7 is connected with a throttle valve 15 by the air pipe;
A wheel speed sensor 10 and a pressure sensor 9 are arranged in the tire 14, and the pressure sensor 9 is fixed on a tire air tap and used for monitoring the air pressure of the tire 14.
The air spring I13 is connected with the air storage tank 12 through an air pipe through a switch valve II 17 and a switch valve III 18;
and the air spring II 20 is connected with the pressure sensor 9 through an air pipe through a switch valve IV 19.
According to one embodiment of the invention, the switch valve I11, the switch valve II 17, the switch valve III 18 and the switch valve IV 19 are all of two-position two-way structures.
In one embodiment of the present invention, the exhaust valve 7 has a two-position two-way structure.
In an embodiment of the present invention, the exhaust valve switch 8 is a two-position three-way structure.
In one embodiment of the invention, the number of the switching valves I11 is four.
According to one embodiment of the invention, the number of the switching valves IV 19 is three. The tire pressure maintaining and regulating system based on the air suspension system can inflate the tire 14, regulate the tire pressure of the tire 14, and is comfortable to regulate and stable to operate. A compressor or an air storage tank 12 is used as an air source; the air pressure of the air storage tank 12 is preferentially used, and when the air pressure of the air storage tank 12 is lower than 1000Kpa, the air pump 3 is used for inflating; in combination with the entire vehicle driving mode, the comfort mode and sport mode correspond to low and high air pressure of the tires and manual adjustment of softer and harder states, respectively.
The invention mainly utilizes an air storage tank of an air suspension and a compression pump to maintain the tire pressure of the tire. Because the tire pressure of the tire is generally in the range of 230KPa to 270KPa, the pressure of the air storage tank 12 is generally above 1600KPa, and the pumping capacity of the air pump 3 is above 2000KPa, the air storage tank 12 and the air pump 3 can rapidly supplement air to maintain the tire pressure when the tire 14 is otherwise insufficient. When the tire pressure of the tire 14 is too high, the controller 6 opens the on-off valve and the adjustable throttle 16 to enable the air pressure of the tire 14 to be steadily reduced.
The inflation condition determination condition is satisfied:
1. the air suspension system has no fault;
2. no inflation of the air suspension;
3. the air suspension is not working;
4. the air suspension is not in lift mode;
5. the air suspension is not in load mode;
6. the door, the front cabin and the trunk are not opened;
7. ABS/ESP/TCS is not involved;
8. the tire pressure monitoring system or the wheel speed sensor sends an inflation request;
9. adjusting the driving mode of the whole vehicle;
when all the above conditions need to be met, the inflation can be carried out.
Determination of the charging conditions with the compressor or the air tank 12:
the tire 14 is inflated with the air tank 12 while the IG key mode is in the on or acc mode.
IG key is in start mode, the tire 14 is inflated with the air suspension compressor.
And (3) an inflation principle: for example, when the tire pressure on one side is insufficient, the air pump 3 or the air storage tank 12 starts to work, the corresponding switch valve is opened, and the adjustable throttle valve 16 adjusts the proper opening degree to start inflation until the air pressure reaches the set threshold value.
The air release principle is as follows: for example, when the air pressure of one wheel is too high, the on-off valve of the tire 14 is opened, the adjustable throttle valve 16 is opened to a proper opening degree, the exhaust valve 7 of the two-position three-way valve is opened, and the exhaust valve 8 of the two-position two-way valve is opened to exhaust until the tire 14 reaches the set air pressure.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A tire pressure maintaining and regulating system based on an air suspension system is characterized in that: the air pump mainly comprises a silencer (1), a filter (2), an air pump (3), a one-way valve (4), a power supply (5), a controller (6), an exhaust valve (7), an exhaust valve switch (8), a pressure sensor (9), a wheel speed sensor (10), a switch valve I (11), a switch valve II (17), a switch valve III (18), a switch valve IV (19), an air storage tank (12), an air spring I (13), a tire (14), a throttle valve (15), an adjustable throttle valve (16) and an air spring II (20);
the power supply (5) is respectively connected with the controller (6) and the compressor of the air suspension, and the controller (6) can control whether the power supply (5) supplies power to the compressor; the controller (6) is respectively electrically connected with the switch valve I (11), the switch valve II (17), the switch valve III (18), the switch valve IV (19) and the adjustable throttle valve (16), and can be used for opening the switch valve I (11), the switch valve II (17), the switch valve III (18), the switch valve IV (19) and the adjustable throttle valve (16) when the tire pressure of the tire (14) is too high, so that the air pressure of the tire (14) is stably reduced; the controller (6) is electrically connected with the pressure sensor (9) and the wheel speed sensor (10) and can receive signals of the pressure sensor (9) and the wheel speed sensor (10);
the silencer (1) is connected with the pressure sensor (9) through a filter (2), an air pump (3), a one-way valve (4) and a throttle valve (15) through an air pipe; the muffler (1) is connected with one end of an exhaust valve (7) through a filter (2) through an air pipe, and the other end of the exhaust valve (7) is connected with a throttle valve (15) through an air pipe; the exhaust valve (7) is connected with an exhaust valve switch (8) through an air pipe, the exhaust valve switch (8) is connected with a switch valve I (11) through the air pipe, and the switch valve I (11) is connected with a tire (14) through the air pipe;
the air spring I (13) is connected with the air storage tank (12) through an air pipe through a switch valve II (17) and a switch valve III (18); the air spring II (20) is connected with the pressure sensor (9) through an air pipe through a switch valve (4);
the wheel speed sensor (10) and the pressure sensor (9) are arranged in a tire (14), the pressure sensor (9) is fixed on the tire air tap, receives pressure signals through radio frequency and is used for monitoring the air pressure of the tire (14), and the wheel speed sensor (10) receives vehicle speed signals through a CAN bus; the air storage tank (12) and the air pump (3) can quickly supplement air to maintain the tire pressure when the air pressure of the tire (14) is insufficient.
2. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: and the switch valve I (11), the switch valve II (17), the switch valve III (18) and the switch valve IV (19) are of two-position two-way structures.
3. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: the exhaust valve (7) is of a two-position two-way structure.
4. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: the exhaust valve switch (8) is of a two-position three-way structure.
5. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: the number of the switch valves I (11) is four.
6. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: the number of the switch valves IV (19) is three.
7. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: the air storage tank (12) and the compressor are used for providing an air source.
8. The tire pressure maintaining and regulating system based on an air suspension system as claimed in claim 1, wherein: when the air pressure of the air storage tank (12) is lower than 1000Kpa, the air pump (3) is used for inflating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110052661.9A CN112757846A (en) | 2021-01-15 | 2021-01-15 | Tire pressure maintaining and adjusting system based on air suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110052661.9A CN112757846A (en) | 2021-01-15 | 2021-01-15 | Tire pressure maintaining and adjusting system based on air suspension system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112757846A true CN112757846A (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110052661.9A Pending CN112757846A (en) | 2021-01-15 | 2021-01-15 | Tire pressure maintaining and adjusting system based on air suspension system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112757846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588225A (en) * | 2021-05-18 | 2021-11-02 | 中国第一汽车股份有限公司 | Air compressor durability test method, system and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1243447A2 (en) * | 2001-03-24 | 2002-09-25 | Continental Aktiengesellschaft | Closed height control device for vehicles |
| US20030150509A1 (en) * | 2002-02-13 | 2003-08-14 | Alexander Stiller | Motor vehicle air spring system having a tire-fill connection |
| US20040262986A1 (en) * | 2003-05-20 | 2004-12-30 | Uwe Folchert | Air supply system for a motor vehicle |
| US20070044881A1 (en) * | 2005-08-25 | 2007-03-01 | Steyr-Daimler-Puch Spezialfahrzeug Gmbh | Dynamic tire-pressure control system |
| CN108883684A (en) * | 2016-03-30 | 2018-11-23 | 威伯科欧洲有限责任公司 | compressed air supply device |
| CN110573355A (en) * | 2017-04-28 | 2019-12-13 | 亨德里克森美国有限责任公司 | Load-based tire inflation system for heavy-duty vehicles |
| CN211764725U (en) * | 2020-03-12 | 2020-10-27 | 青岛黄海学院 | Automobile tire pressure monitoring and variable control system and automobile |
-
2021
- 2021-01-15 CN CN202110052661.9A patent/CN112757846A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1243447A2 (en) * | 2001-03-24 | 2002-09-25 | Continental Aktiengesellschaft | Closed height control device for vehicles |
| US20030150509A1 (en) * | 2002-02-13 | 2003-08-14 | Alexander Stiller | Motor vehicle air spring system having a tire-fill connection |
| US20040262986A1 (en) * | 2003-05-20 | 2004-12-30 | Uwe Folchert | Air supply system for a motor vehicle |
| US20070044881A1 (en) * | 2005-08-25 | 2007-03-01 | Steyr-Daimler-Puch Spezialfahrzeug Gmbh | Dynamic tire-pressure control system |
| CN108883684A (en) * | 2016-03-30 | 2018-11-23 | 威伯科欧洲有限责任公司 | compressed air supply device |
| CN110573355A (en) * | 2017-04-28 | 2019-12-13 | 亨德里克森美国有限责任公司 | Load-based tire inflation system for heavy-duty vehicles |
| CN211764725U (en) * | 2020-03-12 | 2020-10-27 | 青岛黄海学院 | Automobile tire pressure monitoring and variable control system and automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588225A (en) * | 2021-05-18 | 2021-11-02 | 中国第一汽车股份有限公司 | Air compressor durability test method, system and device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210507 |
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| RJ01 | Rejection of invention patent application after publication |