CN111306041A - Pressure spring connection structure and compressor - Google Patents
Pressure spring connection structure and compressor Download PDFInfo
- Publication number
- CN111306041A CN111306041A CN202010090778.1A CN202010090778A CN111306041A CN 111306041 A CN111306041 A CN 111306041A CN 202010090778 A CN202010090778 A CN 202010090778A CN 111306041 A CN111306041 A CN 111306041A
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- China
- Prior art keywords
- pressure spring
- compressor
- connection structure
- welding
- spring connection
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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- 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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
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- 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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
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- 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compressor (AREA)
Abstract
The invention discloses a pressure spring connecting structure and a compressor, wherein the pressure spring connecting structure comprises a shell, and a supporting platform is arranged on the inner surface of the shell; the compressor core is arranged in the shell; the pressure spring is supported between the shell and the compressor core, the upper end of the pressure spring is connected with the compressor core, and the lower end of the pressure spring is welded with the supporting platform. The compressor comprises the pressure spring connecting structure, and the lower end of the pressure spring is welded with the supporting platform on the inner surface of the shell, so that the connection is firm and reliable, and the phenomenon of spring release can not occur when the compressor is subjected to severe vibration, is placed in a lateral lying mode or is placed in an inverted mode. The casing also no longer needs to be provided with a pressure spring support column with enough height, the structure is simpler, the number of parts is less, the operation is more convenient, and the cost is lower.
Description
Technical Field
The invention is used in the field of compressors, and particularly relates to a pressure spring connecting structure and a compressor.
Background
Referring to fig. 1, the conventional compressor has a lower case, a compressor core 10 and an upper case, and the compressor core 10 is coupled to the case by a compression spring 11 having certain elasticity. The connection among the lower shell, the pressure spring 11 and the compressor core 10 of the traditional compressor is realized by the gravity action of the core, namely, the core presses on the pressure spring by the gravity and then presses on the lower shell part. Two ends of the pressure spring can be in loose fit with the machine core and the lower shell part at the same time and are easy to separate; one end of the stator component can be fixed on the lower end face of the stator component by a stator screw to form tight fit, and the other end of the stator component is loosely fitted and can be easily separated. When the compressor is subjected to severe vibration, is placed on the side or is placed upside down, the machine core is easily separated from the pressure spring and the lower shell part, and the machine core is called as a spring releasing part. After the core is unsprung, the stator component is in direct contact with the shell, which causes high noise of the compressor and leakage of electricity of the compressor, and can cause safety problems.
In order to prevent the spring of the core from falling off, a common countermeasure of the conventional compressor is that a limiting structure needs to be arranged between the core and the upper shell, and a pressure spring support 13 needs to be arranged between the pressure spring 11 and the lower shell 12. The compression spring support 13 needs to have a height high enough to prevent the compression spring 11 from falling off under the impact force. The structural design has the advantages of multiple parts, complex process and high cost, and can not completely avoid the phenomenon that the machine core is disengaged from the spring, particularly the disengagement between the pressure spring and the pressure spring support.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a pressure spring connecting structure and a compressor, which have the advantages of no spring release risk, simpler structure, fewer parts, firm and reliable connection, more convenient operation and lower cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
in a first aspect, a pressure spring connection structure includes
The inner surface of the shell is provided with a supporting platform;
the compressor core is arranged in the shell;
the pressure spring is supported between the shell and the compressor core, the upper end of the pressure spring is connected with the compressor core, and the lower end of the pressure spring is welded with the supporting platform.
With reference to the first aspect, in certain implementations of the first aspect, the pressure spring includes a welding portion and a supporting portion, the supporting portion and the welding portion are formed by winding an elastic material, the elastic material is spirally wound in a height direction to form the supporting portion, and the elastic material is wound on a plane where a lower end face of the supporting portion is located to form the welding portion.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the welding portion includes an arc-shaped structure wound toward an inside or an outside of the support portion.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the arc-shaped structure and the supporting portion have a gap in an axis projection direction, and the gap is greater than or equal to 1 mm.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the arc-shaped structure is in a shape of a circular arc, an involute, or a vortex.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the number of windings of the weld is 1 or more.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a lower end surface of the welding portion is provided with a first welding plane.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a second welding plane is disposed on a lower end face of the pressure spring, a boss is disposed on the support platform, and the pressure spring is sleeved on the boss and is welded to the boss in an attached manner.
With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the boss has a height that is greater than 2 times the diameter of the compression spring wire.
In a second aspect, a compressor includes the compressed spring connection structure according to any one of the implementations of the first aspect.
One of the above technical solutions has at least one of the following advantages or beneficial effects: because the lower end of the pressure spring is welded with the supporting platform on the inner surface of the shell, the connection is firm and reliable, and the phenomenon of spring release can not occur when the compressor is violently vibrated, laid on the side or placed upside down. The casing also no longer needs to be provided with a pressure spring support column with enough height, the structure is simpler, the number of parts is less, the operation is more convenient, and the cost is lower.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a conventional compressor cartridge coupling structure;
fig. 2 is a schematic structural view of a movement connecting structure according to an embodiment of the present invention;
fig. 3 is a structural schematic view showing that the arc-shaped structure of the pressure spring is wound toward the outside of the supporting portion in the embodiment shown in fig. 2;
fig. 4 is a schematic view of a first welding plane of the compression spring in the embodiment of fig. 2;
fig. 5 is a structural schematic view showing that the arc-shaped structure of the pressure spring is wound toward the inside of the supporting portion in the embodiment shown in fig. 2;
fig. 6 is a schematic structural view of a movement coupling structure according to another embodiment of the present invention;
fig. 7 is a schematic view of the structure of the pressure spring of the embodiment shown in fig. 6.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
The embodiment of the invention provides a compressor, which can be but not limited to a scroll compressor, a reciprocating compressor and other types of compressors, and the embodiment of the invention is described by taking the reciprocating compressor as an example, the reciprocating compressor comprises a shell 2 and a compressor movement, the compressor movement comprises a cylinder seat, a cylinder head assembly and a driving assembly, and the compressor movement is arranged in the shell 2 and is supported by a pressure spring 3 to form a pressure spring connecting structure. The casing 2 comprises an upper casing and a lower casing 21, the casing 2 is provided with an air suction pipe and an exhaust pipe, and when the reciprocating compressor works, working media are continuously sucked by the air suction pipe and are exhausted by the exhaust pipe after being compressed. The cylinder head assembly is arranged on the cylinder seat, the driving assembly comprises a motor, a crankshaft, a connecting rod and a piston, the motor comprises a stator component and a rotor component, the motor drives the crankshaft to rotate through the rotor component during operation, the eccentric part of the crankshaft drives the connecting rod to move, the connecting rod drives the piston to reciprocate in a cylinder hole of the cylinder seat, and during the operation, the working medium is controlled to enter and exit through the cylinder head assembly, so that the compression of a refrigerant is realized.
Specifically, referring to fig. 2, a pressure spring connection structure includes a casing 2, a compressor core and a pressure spring 3, and a supporting platform 22 is disposed on an inner surface of the casing 2 and used for welding the pressure spring 3. The compressor core is arranged in the shell 2, one or more pressure springs 3 are arranged, the pressure springs 3 are supported between the shell 2 and the compressor core, the upper ends of the pressure springs 3 are connected with the compressor core, and the lower ends of the pressure springs 3 are welded with the supporting platform 22.
Compared with the prior art shown in the figure 1, because the lower end of the pressure spring 3 is welded with the supporting platform 22 on the inner surface of the shell 2, the connection is firm and reliable, and therefore, when the compressor is subjected to severe vibration, is placed on the side or is placed upside down, the spring falling phenomenon cannot occur. The casing 2 is not required to be provided with a pressure spring 3 strut which is high enough, the structure is simpler, the number of parts is less, the operation is more convenient, and the cost is lower.
It is to be understood that the shape of the pressure spring 3 is not limited to a cylindrical shape, but may be a conical shape or a tapered shape.
In some embodiments, referring to fig. 2 to 5, the compression spring 3 includes a welding portion 31 and a supporting portion 32, and the supporting portion 32 and the welding portion 31 are formed by winding a piece of elastic material, which may be spring steel or the like. The elastic material is spirally wound along the height direction to form a supporting part 32, and the supporting part 32 has certain elasticity and is used for supporting the weight of the compressor movement and playing roles in vibration reduction and noise reduction. The elastic material is wound on the plane of the end face of the lower end of the supporting part 32 to form a welding part 31, and the welding part 31 can increase the contact area of the welding points of the supporting platform 22 and the pressure spring 3 and increase the welding strength. This embodiment need not additionally to set up welded structure outside pressure spring 3, directly utilizes elastic material such as spring steel and pressure spring 3 integrated into one piece, and the structure is simpler, and the part still less, the operation of being more convenient for, the cost is lower.
Referring to fig. 3 and 5, the welding portion 31 includes an arc structure wound on the inner side or the outer side of the supporting portion 32, the arc structure is located on the same plane, the arc structure is arc-shaped or involute-shaped or vortex-shaped, and the arc structure can increase the contact area of the welding points of the supporting platform 22 and the pressure spring 3 and increase the welding strength.
Referring to fig. 3 to 5, the number of winding turns of the welding portion 31 is more than 1 turn, so as to ensure that the pressure spring 3 can form continuous welding points along the circumferential direction, and further ensure that the spring-off phenomenon cannot occur when the compressor is subjected to severe vibration, is placed in a side-lying manner or is placed in an inverted manner.
Referring to FIGS. 3 to 5, the arc-shaped structure has a clearance of 1mm or more from the support portion 32 in the axial projection direction, so as to facilitate the welding operation.
In some embodiments, in order to increase the contact area of the welding spot and improve the welding strength, referring to fig. 4, the end face of the welding portion 31 of the pressure spring 3 is ground flat, that is, the lower end face of the welding portion 31 is provided with a first welding plane 33, and during welding, the first welding plane 33 is in face-to-face matching fit with the supporting platform 22, so that the welding strength is improved.
In some embodiments, referring to fig. 6 and 7, in this embodiment, the compression spring 3 has no special welding portion 31, the lower end surface of the compression spring 3 is provided with a second welding plane 34, the supporting platform 22 is provided with a boss 23, the boss 23 and the lower shell 21 are integrally formed or connected into a whole, the boss 23 and the compression spring 3 are in a copying design, the compression spring 3 is sleeved on the boss 23 and is in fit welding with the boss 23, after assembly, the boss 23 is fit with the compression spring 3, and then the inner surface contact points are welded to form a fixed connection, on one hand, the horizontal displacement of the compression spring 3 is limited by the protrusion of the boss 23 in the height direction, on the other hand, the length and the area of a welding point with the compression spring 3 are increased by the boss 23, and.
In order to ensure the welding stability of the pressure spring 3 and the boss 23, referring to fig. 6, the height of the boss 23 is more than 2 times of the diameter of the pressure spring 3, that is, the lower end of the pressure spring 3 has at least two circles of pressure spring 3 wires sleeved with the boss 23 and welded and fixed.
Wherein, the upper end of the pressure spring 3 can be connected with one or more structures of the compressor movement, such as a stator component, a cylinder seat and the like.
The technical scheme of the invention abandons the structural form that the components of the pressure spring 3 and the lower shell 21 in the traditional compressor are in loose fit, so that the phenomenon of spring release can not occur when the compressor is in severe vibration, is placed in a side-lying manner or is placed in an inverted manner.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. The utility model provides a pressure spring connection structure which characterized in that: comprises that
The inner surface of the shell is provided with a supporting platform;
the compressor core is arranged in the shell;
the pressure spring is supported between the shell and the compressor core, the upper end of the pressure spring is connected with the compressor core, and the lower end of the pressure spring is welded with the supporting platform.
2. The pressure spring connection structure according to claim 1, wherein: the pressure spring includes welding part and supporting part, the supporting part with the welding part is by an elastic material coiling shaping, elastic material winds along direction of height spiral and forms the supporting part, elastic material is in the winding forms on the plane at supporting part lower extreme terminal surface place the welding part.
3. The pressure spring connection structure according to claim 2, wherein: the welding part includes an arc-shaped structure wound to the inside or the outside of the supporting part.
4. The pressure spring connection structure according to claim 3, wherein: the arc-shaped structure and the supporting part have a gap in the axial projection direction, and the gap is larger than or equal to 1 mm.
5. The pressure spring connection structure according to claim 3, wherein: the arc-shaped structure is arc-shaped, involute-shaped or vortex-shaped.
6. The pressure spring connection structure according to claim 2, wherein: the number of winding turns of the welding part is more than 1 turn.
7. A pressure spring connection structure according to any one of claims 2 to 6, wherein: the lower end face of the welding part is provided with a first welding plane.
8. The pressure spring connection structure according to claim 1, wherein: the lower terminal surface of pressure spring is equipped with the second welding plane, the last boss that is equipped with of supporting platform, the pressure spring cover is in on the boss, and with the boss laminating welding.
9. The pressure spring connection structure according to claim 8, wherein: the height of the boss is more than 2 times of the diameter of the compression spring wire.
10. A compressor, characterized by: the compression spring connection structure comprises the compression spring connection structure of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010090778.1A CN111306041A (en) | 2020-02-13 | 2020-02-13 | Pressure spring connection structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010090778.1A CN111306041A (en) | 2020-02-13 | 2020-02-13 | Pressure spring connection structure and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111306041A true CN111306041A (en) | 2020-06-19 |
Family
ID=71144956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010090778.1A Pending CN111306041A (en) | 2020-02-13 | 2020-02-13 | Pressure spring connection structure and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111306041A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2000383A (en) * | 1982-10-07 | 1984-04-12 | Henry, H.H. | Mounting a coil spring to a plate |
| JP2001317458A (en) * | 2000-05-11 | 2001-11-16 | Sanyo Electric Co Ltd | Hermetic motor-driven compressor |
| WO2001098658A2 (en) * | 2000-06-20 | 2001-12-27 | Empresa Brasileira De Compressores S.A. - Embraco | Suspension system for a reciprocating hermetic compressor |
| KR20020045078A (en) * | 2000-12-07 | 2002-06-19 | 구자홍 | A hermetic compressor |
| KR20040017917A (en) * | 2002-08-22 | 2004-03-02 | 엘지전자 주식회사 | Preventive apparatus for vibration of compressor |
| CN1566652A (en) * | 2003-06-25 | 2005-01-19 | 乐金电子(天津)电器有限公司 | Lower vessel of hermetic compressor and its manufacturing method |
| CN1856669A (en) * | 2003-09-22 | 2006-11-01 | Lg电子株式会社 | Supporting spring and compressor having the same |
| CN201413340Y (en) * | 2009-05-26 | 2010-02-24 | 昆山市华涛电子有限公司 | Switching spring for testing circuit board |
| CN108252899A (en) * | 2018-04-04 | 2018-07-06 | 黄石东贝电器股份有限公司 | A kind of compressor position limiting structure |
-
2020
- 2020-02-13 CN CN202010090778.1A patent/CN111306041A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2000383A (en) * | 1982-10-07 | 1984-04-12 | Henry, H.H. | Mounting a coil spring to a plate |
| JP2001317458A (en) * | 2000-05-11 | 2001-11-16 | Sanyo Electric Co Ltd | Hermetic motor-driven compressor |
| WO2001098658A2 (en) * | 2000-06-20 | 2001-12-27 | Empresa Brasileira De Compressores S.A. - Embraco | Suspension system for a reciprocating hermetic compressor |
| KR20020045078A (en) * | 2000-12-07 | 2002-06-19 | 구자홍 | A hermetic compressor |
| KR20040017917A (en) * | 2002-08-22 | 2004-03-02 | 엘지전자 주식회사 | Preventive apparatus for vibration of compressor |
| CN1566652A (en) * | 2003-06-25 | 2005-01-19 | 乐金电子(天津)电器有限公司 | Lower vessel of hermetic compressor and its manufacturing method |
| CN1856669A (en) * | 2003-09-22 | 2006-11-01 | Lg电子株式会社 | Supporting spring and compressor having the same |
| CN201413340Y (en) * | 2009-05-26 | 2010-02-24 | 昆山市华涛电子有限公司 | Switching spring for testing circuit board |
| CN108252899A (en) * | 2018-04-04 | 2018-07-06 | 黄石东贝电器股份有限公司 | A kind of compressor position limiting structure |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |
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| RJ01 | Rejection of invention patent application after publication |