CN107345520A - Compressor and its wiring mechanism - Google Patents
Compressor and its wiring mechanism Download PDFInfo
- Publication number
- CN107345520A CN107345520A CN201610294633.7A CN201610294633A CN107345520A CN 107345520 A CN107345520 A CN 107345520A CN 201610294633 A CN201610294633 A CN 201610294633A CN 107345520 A CN107345520 A CN 107345520A
- Authority
- CN
- China
- Prior art keywords
- wiring mechanism
- compressor
- stitch
- convex portion
- housing
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Abstract
The present invention, which provides a kind of compressor and the wiring mechanism for compressor, wiring mechanism, to be included：Housing, including：Body；At least one through hole, set on the body；Convex portion, set on the body, positioned at the edge of the through hole；At least one stitch, through the through hole；Gluing portion, between the body of the stitch and the housing, and fill the through hole.Compressor and its wiring mechanism provided by the invention, it can reduce the fraction defective caused by wiring mechanism vitreum ruptures, improve the reliability of compressor, and save compressor inner space.
Description
Technical field
The present invention relates to compressor field, more particularly to compressor and its wiring mechanism.
Background technology
The motor generally use direct current of existing compressor is driven.The stator lead-out wire of motor needs
It is connected with wiring mechanism on motor casing to be powered to motor.As shown in figure 1, the electricity of compressor 100
Machine unit 120 is connected by a bent axle with compression unit 110 to drive the compression unit of compression unit 110
Part.The cap of compressor case 140 is provided with wiring mechanism 130.Wiring mechanism 130 has frame,
And three stitch by triangle disposition arrangement are provided with frame.Wiring mechanism 130 is by electric motor units 120
Electrically connected with power outlet, its particular by wiring mechanism 130 stitch 131 and power outlet
Binding post connect and power to electric motor units 120.
Due to needing that compressor 100 is sealed, therefore, in stitch 131 and wiring mechanism 130
Frame needs to be attached by vitreum.But vitreum category fragile article, if vitreum is by external force
The then easy fragmentation of situations such as shock, causes whole compressor 100 to scrap.As can be seen here, in the prior art,
The housing of stitch 131 and wiring mechanism 130 is connected using vitreum, and compressor 100 is sealed,
The reliability of compressor can be reduced.
The content of the invention
The defects of present invention is in order to overcome above-mentioned prior art to exist, there is provided a kind of compressor and its patching machine
Structure, it can improve the reliability of compressor.
The present invention provides a kind of wiring mechanism for compressor, and wiring mechanism includes：Housing, housing bag
Include：Body；At least one through hole, set on the body；Convex portion, set on the body,
Positioned at the edge of the through hole；At least one stitch, through the through hole；Gluing portion, positioned at the pin
Between the body of pin and the housing, and fill the through hole.
Preferably, the convex portion is set around the through hole.
Preferably, the plane where extending perpendicularly to the body of the convex portion.
Preferably, the bearing of trend of the convex portion is less than 90 degree with plane angulation where the body.
Preferably, the gluing portion is resin material.
Preferably, when the wiring mechanism includes multiple stitch, the multiple stitch is according to " product " word
Type, " one " font or "L" shaped arrangement.
According to a further aspect of the invention, a kind of compressor is also provided, including：Casing；Compression unit,
In the casing；Electric motor units, in the casing, and drive the compression unit；As above
Described wiring mechanism, on the casing.
Preferably, the wiring mechanism electrically connects with the electric motor units, one end connection institute of the stitch
State electric motor units, the other end connection power outlet of the stitch.
Preferably, the convex portion connects one end of the electric motor units or the convex portion towards the stitch
One end of the power outlet is connected towards the stitch.
Preferably, the housing of the wiring mechanism is integrally formed with the casing.
Preferably, the housing of the wiring mechanism is the wiring frame being connected with the casing.
Preferably, the gluing portion has curved surfaces towards one end of the motor section.
Preferably, the wiring mechanism is located on the upper shell cover, lower cover or side wall of compressor.
Preferably, the sensor of the stitch connection sensing compressor parameter of the wiring mechanism.
Compressor and its wiring mechanism provided by the invention, it can be reduced because wiring mechanism vitreum ruptures
Caused by fraction defective, improve the reliability of compressor, and save compressor inner space.Compared to existing
There is technology, the present invention has following advantage：
1) gluing portion is set between the body of stitch and wiring mechanism housing, for stitch with above-mentioned body
Connection can effectively act as connecting, fix, seal, insulating and pressure-resistant function, and gluing portion by
External impacts are non-friable, and then improve the reliability of compressor；
2) it is adjusted by docking the hull shape of line mechanism and then the formation work of wiring mechanism housing
The fill process in skill and gluing portion is more easy；
3) be adjusted by docking the hull shape of line mechanism so the structure of wiring mechanism housing more
For stabilization.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature of the invention and excellent
Point will be apparent.
Fig. 1 shows a kind of schematic diagram of compressor.
Fig. 2 shows the schematic diagram of wiring mechanism according to embodiments of the present invention.
Fig. 3 shows the schematic diagram of wiring mechanism according to another embodiment of the present invention.
Fig. 4 shows the schematic diagram at another visual angle of the wiring mechanism shown in Fig. 3.
Fig. 5 shows the schematic diagram of the wiring mechanism according to further embodiment of this invention.
Fig. 6 shows the schematic diagram of wiring mechanism according to yet another embodiment of the invention.
Fig. 7 shows the schematic diagram at another visual angle of the wiring mechanism shown in Fig. 6.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein；Conversely, there is provided this
A little embodiments cause the present invention fully and completely, and the design of example embodiment will be passed on comprehensively
To those skilled in the art.Identical reference represents same or similar structure in figure, thus
Repetition thereof will be omitted.
The defects of in order to improve prior art, the invention provides a kind of compressor and its wiring mechanism.This
The compressor that invention provides is referred to Fig. 1, compressor 100 include casing 140, compression unit 110,
Electric motor units 120 and wiring mechanism 130.Casing 140 can include housing and cap.Wiring mechanism
130 can be arranged on the housing or cap of casing 140.
Compression unit 110 is located in casing 140.Compression unit 110 is preferably rotator type compression unit,
It is compressed by the rotation of eccentric wheel to the gas in cylinder.Compression unit 110 can also use
Other kinds of compress mode, such as piston type or vortex.Fig. 1 is only to schematically show compression
Unit 110, the present invention are not intended to limit the concrete structure of compression unit 110, and those skilled in the art can be with
The implementation of more compression units 110 is realized, will not be described here.
Electric motor units 120 are located in casing 140.Specifically, electric motor units 120 by a bent axle with
Compression unit 110 connects and then drives the compression member of compression unit 110.Electric motor units 120 include turning
Son and stator.Stator is fixed on casing 140, and is connected and then can be powered with stator lead-out wire.Turn
Son is interference fitted on the inside of stator, and with bent axle.After stator is powered, rotor rotates, and with dynamic crankshaft
Rotate.In the present embodiment, wiring mechanism 130 electrically connects with electric motor units 120.Pass through wiring mechanism
130 and its multiple stitch 131 by stator and external power source lead-out wire, to provide electricity to electric motor units 120
Source.In some change case, wiring mechanism 130 can be applied to electric current and sensor (forceful electric power and light current).
In other words, wiring mechanism 130 can also be connected to carry out thermometric, pressure measurement, measuring acceleration to compressor
Deng sensor.Compared in prior art, wiring mechanism is only used for connecting electric motor units, and of the invention connects
Line mechanism application is bigger.
The various embodiments of wiring mechanism provided by the invention are referred to Fig. 2 to Fig. 7.
Referring first to Fig. 2, Fig. 2 shows showing according to the wiring mechanism 200 of an embodiment of the present invention
It is intended to.Wiring mechanism 200 includes housing 210, stitch 220 and gluing portion 230.Stitch 220 and housing
210 are connected by gluing portion 230.The housing 210 of wiring mechanism 200 alternatively with compressor case one
It is body formed.In some change case, the housing 210 of wiring mechanism 200 can also be independently of compressor
Casing but the frame being connected with compressor case.The production method of the housing 210 of wiring mechanism 200
Depending on the real needs of compressor.For example, the housing 210 of wiring mechanism 200 and compressor case one
When body formed, it is possible to reduce the making step of the housing 210 of wiring mechanism 200 is fabricated separately；Patching machine
When the housing 210 of structure 200 is molded respectively with compressor case, the housing 210 and pressure of wiring mechanism 200
The connection of contracting machine casing can be more flexible.
Particularly with when housing 210 and the compressor case of wiring mechanism 200 are integrally formed, without setting
Put the frame of wiring mechanism 200, it is only necessary to piercing and flanging and connect on compressor case by gluing portion 230
Stitch 220 and compressor case are connect to realize the structure of wiring mechanism 200.Meanwhile and due to gluing portion
The characteristic of 230 coating solidifications so that the structure fabrication of so wiring mechanism 200 is more convenient, and by
Frame need not be set in it, the position of wiring mechanism 200 is set can be more flexible.
Specifically, the housing 210 of wiring mechanism 200 includes body 211, is arranged on body 211
Through hole 212 and convex portion 213.Wherein, through hole 212 passes through for stitch 220.Through hole 212 it is interior
Footpath is preferably more than the external diameter of stitch 220.Convex portion 213 is arranged on body 211, and is located at through hole 212
Edge.Convex portion 213 alternatively, is set around through hole 212.
Specifically, the electric motor units of one end A connection compressors of stitch 220, stitch 220 it is another
Hold B connection power outlets.In the present embodiment, convex portion 213 connects power supply towards stitch 220 and drawn
One end B extensions of line.Because convex portion 213 is towards the extension of B ends, therefore, wiring mechanism 200 takes more
Few compressor inner space.Meanwhile in the present embodiment, bearing of trend and the body 211 of convex portion 213
Place plane angulation C is 90 degree.
Through hole 212 is filled between stitch 220 and housing 210 in gluing portion 230.Gluing portion 230
Alternatively, it is high temperature resistant, the resin of refrigerant machine freeze-resistant machine oil.Gluing portion 230 is for stitch 220
Connection with above-mentioned body 211 can effectively act as connecting, fix, seal, insulating and pressure-resistant work(
Can, and gluing portion 230 is non-friable by external impacts, and then improve the reliability of compressor.Further
Ground, in the present embodiment, the lower end in gluing portion 230 have curved surfaces.For example, gluing portion 230
Lower end has downwardly projecting curved surfaces.When pressure of the wiring mechanism 200 by outside, gluing portion
The surface area of 230 lower ends is relative to be increased, and then reduces the pressure at gluing portion 230.In other words, due to
The lifting surface area increase of the lower end of gluing portion 230, therefore, the pressure at gluing portion 230 reduces so that connects
The structure of line mechanism 200 is more stable.
For the housing 210 of the wiring mechanism 200 of embodiment illustrated in fig. 2, due to convex portion 213 need not be considered
Bearing of trend it is vertical with the place plane of body 211, the making technology for housing 210 of being more convenient for.Meanwhile
Because convex portion 213 makes through hole 212 for cylindrical shape, therefore, the dosing technology in gluing portion 230 is also more just
It is prompt.
Wiring according to another embodiment of the present invention is shown referring next to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4
The schematic diagram of mechanism 300.The structure of wiring mechanism 300 is similar with the wiring mechanism 200 shown in Fig. 2,
Unlike the wiring mechanism 200 shown in Fig. 2, convex portion 313 connects compressor towards stitch 320
One end A extensions of electric motor units.In the present embodiment, the electric motor units of convex portion 313 towards compressor
One end A, it can be born more in multi-compressor towards other end B, wiring mechanism 300 compared to convex portion 313
The outside pressure in portion.Further, referring to Fig. 4, in the present embodiment, convex portion 313 is around stitch 320.
Similar with the embodiment shown in Fig. 2, the wiring mechanism 300 shown in Fig. 3 also allows for housing 310
Making technology and the dosing technology in gluing portion 330.
Then, referring to Fig. 5, Fig. 5 is shown according to the wiring mechanism 400 of further embodiment of this invention
Schematic diagram.The structure of wiring mechanism 400 is similar with the wiring mechanism 200 shown in Fig. 2, shown in Fig. 2
Wiring mechanism 200 unlike, formed by the bearing of trend of convex portion 413 and the place plane of body 411
Angle D is less than 90 degree.When angle D is less than 90 degree, the stress that can improve wiring mechanism 400 (has
Inclined component).The flush of the one end of gluing portion 430 and the one end of housing 410, the other end are curved
Surface, without departing from the end of convex portion 413.
In the embodiment shown in fig. 5, due to the bearing of trend and the place plane of body 411 of convex portion 413
Angulation D is less than 90 degree, and the surface area that body 411 is provided with the side of convex portion 413 is bigger, by
After the increase of power area, the pressure born diminishes, and therefore, the pressure that wiring mechanism 400 can bear is more
Greatly, the structure of wiring mechanism 400 is more stable.But consider to need the bearing of trend for making convex portion 413 and this
The place plane angulation D of body 411 is less than 90 degree.
Patching machine according to yet another embodiment of the invention is shown referring again to Fig. 6 and Fig. 7, Fig. 6 and Fig. 7
The schematic diagram of structure 500.The structure of wiring mechanism 500 is similar with the wiring mechanism 400 shown in Fig. 5, with
Unlike wiring mechanism 400 shown in Fig. 4, convex portion 513 connects the electricity of compressor towards stitch 520
One end A extensions of machine unit.Further, referring to Fig. 7, in the present embodiment, convex portion 513 is surround
Stitch 520.It is similar with the embodiment shown in Fig. 5, the shell of Fig. 6 and the wiring mechanism 500 shown in Fig. 7
The structure of body 510 is more stable.
Fig. 2 to Fig. 7 diagrammatically only shows multiple embodiments of wiring mechanism provided by the invention, this
Art personnel can realize more change case according to foregoing description.For example, the change of stitch geometry,
The change of shape of through holes, these change case are all within the scope of the present invention, will not be described here.
Although the compressor shown in Fig. 1 only includes a wiring mechanism, and three are included on the wiring mechanism
The stitch of individual " product " font arrangement, these stitch are connected to motor, but those skilled in the art should
When noting, wiring mechanism provided by the invention does not limit quantity, arrangement and the function of stitch.
For example, wiring mechanism can only include a stitch, multiple pins that quantity is different from three can also be included
Pin；When wiring mechanism includes multiple stitch, these stitch except according to " product " font arrange in addition to,
It can also be arranged according to " one " font or "L" shaped；Except that can be the interface for connecting motor,
The stitch of wiring mechanism can also be the interface for connecting sensor.In addition, compressor provided by the invention
Do not limit the quantity of wiring mechanism and the position of wiring mechanism is set.For example, can be according to practical application
Type of compressor and other special requirements, in compressor other positions (such as upper shell cover, lower cover
Or side wall etc.) one or more wiring mechanism is set.The structure of so compressor is more flexible, and
And when setting multiple convex portions towards the wiring mechanism of extension outside compressor, it will not also increase in compressor
The use in the space in portion.
Compared with prior art, the present invention has following advantage：
1) gluing portion is set between the body of stitch and wiring mechanism housing, for stitch and above-mentioned body
Connection can effectively act as connecting, fix, seal, insulating and pressure-resistant function, and gluing portion by
External impacts are non-friable, and then improve the reliability of compressor；
2) it is adjusted by docking the hull shape of line mechanism and then the formation work of wiring mechanism housing
The fill process in skill and gluing portion is more easy；
3) be adjusted by docking the hull shape of line mechanism so the structure of wiring mechanism housing more
For stabilization.
The illustrative embodiments of the present invention are particularly shown and described above.It is it should be understood that of the invention
Disclosed embodiment is not limited to, on the contrary, it is intended to cover included in scope
Interior various modifications and equivalent replacement.
Claims (15)
- A kind of 1. wiring mechanism for compressor, it is characterised in that including：Housing, including：Body；At least one through hole, set on the body；Convex portion, set on the body, positioned at the edge of the through hole；At least one stitch, through the through hole；Gluing portion, between the body of the stitch and the housing, and fill the through hole.
- 2. wiring mechanism as claimed in claim 1, it is characterised in that the convex portion is around the through hole Set.
- 3. wiring mechanism as claimed in claim 1 or 2, it is characterised in that the extension side of the convex portion To perpendicular to plane where the body.
- 4. wiring mechanism as claimed in claim 1 or 2, it is characterised in that the extension side of the convex portion It is less than 90 degree to plane angulation where the body.
- 5. wiring mechanism as claimed in claim 1 or 2, it is characterised in that the gluing portion is resin Material.
- 6. wiring mechanism as claimed in claim 1 or 2, it is characterised in that the wiring mechanism includes Multiple stitch.
- 7. wiring mechanism as claimed in claim 6, it is characterised in that the multiple stitch is according to " product " Font, " one " font or "L" shaped arrangement.
- A kind of 8. compressor, it is characterised in that including：Casing；Compression unit, in the casing；Electric motor units,In the casing, and drive the compression unit；At least one wiring mechanism as described in any one of claim 1 to 7, on the casing.
- 9. compressor as claimed in claim 8, it is characterised in that the wiring mechanism and the motor Unit electrically connects, and one end of the stitch connects the electric motor units, the other end connection electricity of the stitch Source terminal.
- 10. compressor as claimed in claim 9, it is characterised in that the convex portion is towards the stitch The one end or the convex portion for connecting the electric motor units connect the power outlet towards the stitch One end.
- 11. the compressor as described in any one of claim 8 to 10, it is characterised in that the patching machine The housing of structure is integrally formed with the casing.
- 12. the compressor as described in any one of claim 8 to 10, it is characterised in that the patching machine The housing of structure is the wiring frame being connected with the casing.
- 13. the compressor as described in any one of claim 8 to 10, it is characterised in that the gluing portion There are curved surfaces towards one end of the electric motor units.
- 14. compressor as claimed in claim 8, it is characterised in that the wiring mechanism is positioned at compression In the upper shell cover of machine, lower cover or side wall.
- 15. compressor as claimed in claim 8, it is characterised in that the stitch of the wiring mechanism connects Connect the sensor of sensing compressor parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294633.7A CN107345520A (en) | 2016-05-06 | 2016-05-06 | Compressor and its wiring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294633.7A CN107345520A (en) | 2016-05-06 | 2016-05-06 | Compressor and its wiring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107345520A true CN107345520A (en) | 2017-11-14 |
Family
ID=60254227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294633.7A Pending CN107345520A (en) | 2016-05-06 | 2016-05-06 | Compressor and its wiring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107345520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852864A (en) * | 2019-04-25 | 2020-10-30 | 株式会社丰田自动织机 | Electric compressor and method for assembling electric compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257162A (en) * | 1998-12-15 | 2000-06-21 | 松下电器产业株式会社 | Close type compressor |
| CN2750075Y (en) * | 2003-10-30 | 2006-01-04 | 松下电器产业株式会社 | Hermetic electric compressor |
| CN1888425A (en) * | 2005-06-29 | 2007-01-03 | 科普兰公司 | Terminal cluster block |
| CN102678558A (en) * | 2011-03-08 | 2012-09-19 | 株式会社丰田自动织机 | Electric compressor |
| CN104603460A (en) * | 2012-10-30 | 2015-05-06 | 松下知识产权经营株式会社 | Electric compressor |
| CN205744450U (en) * | 2016-05-06 | 2016-11-30 | 上海日立电器有限公司 | Compressor and wiring mechanism thereof |
-
2016
- 2016-05-06 CN CN201610294633.7A patent/CN107345520A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257162A (en) * | 1998-12-15 | 2000-06-21 | 松下电器产业株式会社 | Close type compressor |
| CN2750075Y (en) * | 2003-10-30 | 2006-01-04 | 松下电器产业株式会社 | Hermetic electric compressor |
| CN1888425A (en) * | 2005-06-29 | 2007-01-03 | 科普兰公司 | Terminal cluster block |
| CN102678558A (en) * | 2011-03-08 | 2012-09-19 | 株式会社丰田自动织机 | Electric compressor |
| CN104603460A (en) * | 2012-10-30 | 2015-05-06 | 松下知识产权经营株式会社 | Electric compressor |
| CN205744450U (en) * | 2016-05-06 | 2016-11-30 | 上海日立电器有限公司 | Compressor and wiring mechanism thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852864A (en) * | 2019-04-25 | 2020-10-30 | 株式会社丰田自动织机 | Electric compressor and method for assembling electric compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
|
| CB02 | Change of applicant information | ||
| 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: 20171114 |
|
| RJ01 | Rejection of invention patent application after publication |