CN109075634A - Rotating electric machine - Google Patents
Rotating electric machine Download PDFInfo
- Publication number
- CN109075634A CN109075634A CN201780029537.2A CN201780029537A CN109075634A CN 109075634 A CN109075634 A CN 109075634A CN 201780029537 A CN201780029537 A CN 201780029537A CN 109075634 A CN109075634 A CN 109075634A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- insertion part
- magnet
- rotor
- rotor core
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of rotating electric machine, it will be formed in the permanent magnet reception hole of rotor core using insertion part and the permanent magnet being inserted be fixed together, it can prevent insertion part from flowing out to the outside of rotor core permanent magnet reception hole, and by reducing the thermal resistance from magnet to rotor core, the temperature for being able to suppress permanent magnet rises.The present invention is the rotating electric machine for including rotor and stator, wherein the rotor includes: rotary shaft；Permanent magnet；It is formed with the rotor core of the incorporating section for storing the permanent magnet；The insertion part of the shear surface of the inner face side in affixed face and the incorporating section with the permanent magnetism side, is used to for the permanent magnet being fixed on the incorporating section, and the permanent magnet is contacted in the one side of the not affixed insertion part with the rotor core.
Description
Technical field
The present invention relates to a kind of rotating electric machines that permanent magnet is fixed on to rotor core using insertion part.
Background technique
In the rotating electric machine being made of rotor and stator, stator includes the stator core and winding for being formed with multiple slots
The coil of tooth between being set to slot.
Rotor includes the rotor core for being laminated with multilayer electromagnetic steel plate, the permanent magnet with magnetic force and is made of rotary shaft
Axis.In addition, the magnet for being embedded with multiple permanent magnets in the iron core for being formed with permanent magnet reception hole buries in the type of above-mentioned rotor
It is well-known to enter formula rotor.
Magnetic field is generated by making electric current circulate in above-mentioned coil.Magnetic field based on generation, between rotor and stator
The stream of magnetic flux is formed, so that rotor obtains rotary force.
In above-mentioned magnet flush type rotor, the multiple permanent magnet reception holes for being formed in rotor core are sized to
Greater than the outer dimension of permanent magnet, using cement in the gap for being filled in permanent magnet and permanent magnet reception hole etc. by permanent magnet
Reception hole is fixed together with permanent magnet.In addition, as the fixing means that permanent magnet and permanent magnet reception hole are fixed together,
Other than cement is set, it is also known that fill above-mentioned gap in the gap of permanent magnet and permanent magnet reception hole with moulding resin
Permanent magnet fixing means.Hereinafter, will be used to the component that permanent magnet and permanent magnet reception hole are fixed together being known as insertion part.
It is widely known that since the permanent magnet when rotating electric machine operates will be as the condition of high temperature, above-mentioned insertion section
The thermosetting resin etc. of superior for heat resistance can be used in part.
Permanent magnet is fixed to the permanent magnet reception hole of rotor core in the insertion part using above-mentioned thermosetting resin etc.
The step of in, by above-mentioned permanent magnet, above-mentioned thermosetting resin etc. be inserted into or be filled into the permanent magnet reception hole of rotor core
Later, it is allowed to fix by heating above-mentioned thermosetting resin etc..
The property of above-mentioned thermosetting resin is that when heated, viscosity reduces at a certain defined temperature.Therefore, viscosity
Reduced thermosetting resin passes through the gap between multilayer laminated electromagnetic steel plate in radiation direction, the external outflow to rotor.
As a result, the above-mentioned thermosetting resin for flowing out to rotor exterior solidifies in the state of being attached to rotor appearance.
Due to the thermosetting resin fixation and rotor that appearance becomes larger, in rotating electric machine operating be arranged in rotor
Neighbouring component interference is shut down due to breakage.
In patent document 1, a kind of method is disclosed, will be applied directly in advance forever as the cement of insertion part
On magnet (hereinafter referred to as coating magnet), after the insertion of above-mentioned coating magnet is formed in the permanent magnet reception hole of rotor core, lead to
Cross make to be applied to magnet insertion part solidification come fixed permanent magnet.
On the other hand, in patent document 2, a kind of method is proposed, the resin molded body as insertion part is made
Coating layer is formed in the periphery of permanent magnet in a manner of at least having the sectional area bigger than the sectional area of permanent magnet reception hole, is inciting somebody to action
When the magnet is inserted into the permanent magnet reception hole of rotor core, inserted while being pruned by the open edge of permanent magnet reception hole
Enter, so that permanent magnet be made all to contact with permanent magnet reception hole to be fixed.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2003-199303 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2006-174537 bulletin
Summary of the invention
Technical problems to be solved by the inivention
According to the rotor of patent document 1, above-mentioned coating magnet insertion be formed in rotor core permanent magnet reception hole it
Afterwards, due to the cement cures as insertion part, permanent magnet and rotor core reception hole can be fixed together.So
And due to there is the cement as insertion part in the permanent magnet reception hole internal curing for being formed in rotor core
A possibility that it is flowed out by the gap between multilayer laminated electromagnetic steel plate to the outside of rotor in radiation direction.As a result,
Become larger in rotor appearance since coating is fixed, above-mentioned rotor is done when rotating electric machine is operated with the component being set near rotor
It relates to, is shut down due to breakage.
On the other hand, according to the rotor of patent document 2, the magnet with insertion part is in the permanent magnet for being inserted into rotor core
It when reception hole, is inserted into while being pruned by the open edge of permanent magnet reception hole, therefore flows out to and turn there is no insertion part
A possibility that outside of son.But the coating layer due to being formed with the resin formation as insertion part in permanent magnet whole face, because
This thermal resistance from permanent magnet to rotor core becomes larger, and the permanent magnet as heater becomes temperature and is easy the structure risen.
The purpose of the present invention is to provide a kind of structures of rotor, in permanent magnet submerged formula rotor, can utilize and insert
Enter component and will be formed in multiple permanent magnet reception holes of rotor core and be fixed together with permanent magnet, insertion part will not flow out
Rotor core exterior surface, and by reducing the thermal resistance from magnet to rotor core, the temperature for being able to suppress permanent magnet rises.
For solving the technical solution of technical problem
In order to solve the above-mentioned technical problem, rotating electric machine of the invention includes rotor and stator, in the rotating electric machine, institute
Stating rotor includes: rotary shaft；Permanent magnet；It is formed with the rotor core of the incorporating section for storing the permanent magnet；With it is described forever
The insertion part of the shear surface of the inner face side in the affixed face and incorporating section of magnet side, is used to for the permanent magnet being fixed on
The one side of the incorporating section, the not affixed insertion part of the permanent magnet is contacted with the rotor core.
In addition, including the rotating electric machine of rotor and stator, wherein the rotor includes: rotary shaft；Permanent magnet；It is formed with
For storing the rotor core of the incorporating section of the permanent magnet；The affixed face of inner face side with the incorporating section and the permanent magnet
The insertion part of the shear surface of side is used to the permanent magnet being fixed on the incorporating section, and the rotor core is not affixed
The one side of the insertion part is contacted with the permanent magnet.
Invention effect
In accordance with the invention it is possible to prevent insertion part from flowing out to the outside of rotor core permanent magnet reception hole, and pass through
The thermal resistance from magnet to rotor core is reduced, the temperature for being able to suppress permanent magnet rises.
Detailed description of the invention
Fig. 1 is the radial direction sectional view of rotor.
Fig. 2A is the perspective view of rotor core.
Fig. 2 B is the top view of rotor core.
Fig. 3 A is the perspective view for being connected with insertion part on one side in permanent magnet of embodiment 1.
Fig. 3 B is the top view for being connected with insertion part on one side in permanent magnet of embodiment 1.
Fig. 4 is the figure the step of magnet with insertion part is inserted into rotor core for indicating embodiment 1.
Fig. 5 is the figure the step of magnet with insertion part is inserted into rotor core for indicating embodiment 1.
Fig. 6 A is that the magnet reception hole peripheral side in rotor core of embodiment 2 is connected with the perspective view of insertion part.
Fig. 6 B is that the magnet reception hole peripheral side in rotor core of embodiment 2 is connected with the top view of insertion part.
Fig. 7 A is that the magnet reception hole inner circumferential side in rotor core of embodiment 2 is connected with the perspective view of insertion part.
Fig. 7 B is that the magnet reception hole inner circumferential side in rotor core of embodiment 2 is connected with the top view of insertion part.
Fig. 8 is the figure that permanent magnet insertion is had to the step of rotor core of insertion part for indicating embodiment 2.
Fig. 9 is the figure that permanent magnet insertion is had to the step of rotor core of insertion part for indicating embodiment 2.
Specific embodiment
Firstly, illustrating the summary of the rotor of rotating electric machine of the invention using Fig. 1, Fig. 2A and Fig. 2 B.
Fig. 1 is to cut the sectional view of the major part of rotating electric machine in radial direction.As shown here, rotating electric machine includes
Rotor 1 and the stator 2 for being set to its periphery.Rotor 1 has perforation in the magnet reception hole 11 of the rotor core 10 of stacking
Permanent magnet 20 passes through the fixed structure of insertion part 30, and is provided in the center of rotor core 10 insertion rotary shaft 50
Axis hole 5.In addition, permanent magnet 20 is fixed on rotor core 10 by insertion part 30, but to reliability is further increased,
The push plate for preventing permanent magnet 20 from dispersing to the axial end portion of rotor core 10 can be configured.
On the other hand, stator 2 includes the stator core for being formed with multiple slots and the line wound on the tooth being set between slot
Circle is outer rotor in rotor by the configuration of stator 2 in rotor exterior in the case where rotor is internal rotor (inner rotor)
In the case where (outer rotor), stator 2 is configured in internal rotor.Using because of caused by circulating current in the coil
Magnetic flux caused by the permanent magnet 20 of magnetic flux and rotor 1 forms rotating excitation field, so that rotor 1 is generated rotary force, by being installed on axis
The output shaft in hole 5 transfers power to outside rotating electric machine.At this point, because of caused by circulating current in the coil magnetic flux with forever
Magnet 20 interlinks, so that the eddy-current loss generated causes permanent magnet 20 to become the condition of high temperature.
Fig. 2A is the perspective view of rotor core 10, and Fig. 2 B is the top view of rotor core 10.Rotor core 10 will be by that will form
The stacked steel plate for having the steel plate of the magnet reception hole 11 for storing stamping forming permanent magnet 20 to stack is constituted, for example,
Steel plate can also be made of electromagnetic steel plate or amorphous steel plate.In addition, as shown here, by the radius side of magnet reception hole 11
To size be set as B.
Embodiment 1
Illustrate the rotor of embodiment 1 using Fig. 3 A, Fig. 3 B, Fig. 4, Fig. 5.Wherein, Fig. 3 A be permanent magnet 20 one side it is solid
It is connected to the perspective view of insertion part 30, Fig. 3 B is its top view.Hereinafter, the portion that insertion part 30 will be connected in permanent magnet 20
Part is known as the magnet 40 for having insertion part.In addition, Fig. 4 makes to indicate that will be connected with having for insertion part 30 in inner circumferential side face inserts
The perspective view for the step of entering the insertion magnet reception hole 11 of magnet 40 of component, Fig. 5 is to indicate that insertion will be connected in circumferential lateral surface
The perspective view for the step of magnet 40 with insertion part of component 30 is inserted into magnet reception hole 11.
In the present embodiment, the permanent magnet 20 being accommodated in magnet reception hole 11 is rare-earth permanent magnet, or neodymium
The magnet of the types such as system, the sintered magnet of samarium system or ferrimagnet.In addition, whether there is or not the surface treatments of permanent magnet 20 all may be used
With.In addition, since permanent magnet 20 becomes the condition of high temperature, being accordingly used in the insertion section of fixed permanent magnet 20 when rotating electric machine operates
The material that part 30 needs for superior for heat resistance.It is therefore preferable that using 100 degree of heat resisting temperature or more of thermosetting resin etc..
In the present embodiment, it as shown in Fig. 3 A, Fig. 3 B, before being inserted into magnet reception hole 11, is applied on permanent magnet 20
Insertion part 30 simultaneously makes its solidification.Different from the cured patent document 1 of insertion part is made after such insertion as a result, insertion part is not
The outside of rotor 1 can be flowed out to.The face for applying insertion part 30 is the inner circumferential side of permanent magnet 20 in Fig. 4, permanent magnet 20 in Fig. 5
Inner circumferential side.Alternatively, it is also possible to which shaped insertion part 30 to be fixed in any surface of permanent magnet 20.According to Fig. 4's
Structure, permanent magnet 20 are contacted in peripheral side with rotor core 10, and the heat of permanent magnet 20 can be transmitted to rotor core well
10 outer peripheral surface, therefore cooled down by the outer peripheral surface to rotor core 10, it also can be cooled effectively permanent magnet 20, it can
Improve the efficiency of rotating electric machine.In addition, according to the structure of Fig. 5, in the outer peripheral surface for being easy the permanent magnet 20 by centrifugal forces affect
The insertion part 30 of setting is used as guard block, therefore 20 breakage of permanent magnet can be prevented etc..
In addition, the component that insertion part 30 is shaved when being insertion magnet reception hole 11, therefore the hardness of insertion part 30
It must be set to the hardness lower than rotor core 10.For example, the hardness of insertion part 30 is preferably below durometer hardness HDA90.
In addition, in order to which permanent magnet 20 is fixed in magnet reception hole 11 by insertion part 30, such as Fig. 2A, Fig. 2 B, figure
Shown in 3A, Fig. 3 B, when the size of the thickness direction of permanent magnet 20 is set as A, by the thickness side of the magnet 40 with insertion part
To size be set as C when, the relationship of the size B of they and magnet reception hole 11 needs to meet A < B < C.
Illustrate for be inserted into the magnet 40 with insertion part for being set as such size using the perspective view of Fig. 4, Fig. 5
The step of magnet reception hole 11.
As shown in (a) of Fig. 4 or Fig. 5, (b), when by be set as described above above-mentioned size with insertion part
Magnet 40 be inserted into magnet reception hole 11 when, insertion part 30 is cut to be equivalent to by the opening portion edge 12 of magnet reception hole 11
The size of C-B forms shear surface, and the size B of the size of the magnet 40 with insertion part and magnet reception hole 11 is substantially
It is equal.Rotor core 10 forms burr by punch forming, therefore in pressing direction.In addition, by by magnet reception hole 11
Pressing direction is set as the direction opposite with the direction of insertion of magnet, due in the formation of the opening portion edge 12 of magnet reception hole 11
Burr, therefore can easily prune insertion part 30.
On the other hand, the insertion part side, that is, magnet face opposite with having the magnet 40 of insertion part, in insertion with slotting
When entering the magnet 40 of component, contacted with the magnet of rotor core 10 storage internal surface of hole.
As noted previously, as being inserted into while making magnet face and the inner surface of the magnet reception hole of rotor core 10 contacts
Magnet reception hole, therefore be only shaved by the insertion part 30 that the opening portion edge 12 of the magnet reception hole is pruned unwanted
Amount.Therefore, as shown in (c) of Fig. 4 or Fig. 5, the magnet 40 with insertion part is fixed to rotor core 10.Also, not
The face of affixed insertion part 30, permanent magnet 20 are contacted with rotor core 10, so as to reduce from permanent magnet 20 to rotor core
10 thermal resistance, therefore the temperature for being able to suppress permanent magnet 20 rises.
As described above, according to the rotating electric machine of the present embodiment, it can prevent insertion part from flowing out to permanent magnet
The outside of reception hole, and by reducing the thermal resistance from magnet to rotor core, the temperature for being able to suppress permanent magnet rises.
Embodiment 2
Illustrate the rotating electric machine of embodiment 2 using Fig. 6 to Fig. 9.For the description thereof will be omitted with the duplicate content of embodiment 1.
In addition, Fig. 6 is to be connected with the perspective view (Fig. 6 A) and top view of insertion part 130 in the peripheral side wall surface of magnet reception hole 111
(Fig. 6 B), Fig. 7 be magnet reception hole 111 inner circumferential side wall surface be connected with insertion part 130 perspective view (Fig. 7 A) and overlook
Scheme (Fig. 7 B).Hereinafter, the component for being connected with insertion part 130 in the side wall of magnet reception hole 111 is known as having insertion part
Magnet reception hole 110.
Before permanent magnet 20 is inserted into magnet reception hole 111, insertion part is applied in the side wall of magnet reception hole 111
130 and make its solidification.It is magnet reception hole 111 in Figure 13 in the face of the side wall coating insertion part 130 of magnet reception hole 111
Inner circumferential side wall surface, in Figure 14 be magnet reception hole 111 peripheral side wall surface.Alternatively, it is also possible to by shaped insertion
Component 130 is fixed in any side wall of magnet reception hole 111.In addition, insertion part 130 can by insertion permanent magnet 20 by
It prunes, therefore the hardness of insertion part 130 must be set to the hardness lower than permanent magnet 20.For example, it is preferable to which durometer hardness is
HDA90 or less.
In addition, in order to which permanent magnet 20 is fixed in magnet reception hole 111 using insertion part 130, such as Figure 11 or Figure 12
It is shown, when the size of the thickness direction of magnet reception hole 111 is set as D, by the ruler of the magnet reception hole 110 with insertion part
Very little when being set as E, the relationship of the size A of the thickness direction of they and permanent magnet 20 needs to meet E < A < D.
Fig. 8, Fig. 9 are the figures for indicating the step of permanent magnet 20 is inserted into the magnet reception hole 110 for having insertion part.
When permanent magnet 20 to be inserted into the magnet reception hole 110 with insertion part for being set as above-mentioned size as described above
When, insertion part 130 is cut by permanent magnet edge 21 to form shear surface with the comparable size of A-E, and has insertion part
The size of magnet reception hole 110 become roughly equal with the size A of permanent magnet 20.
On the other hand, the opposing face in the face affixed with the insertion part of the magnet reception hole 110 with insertion part is being inserted
It is contacted when entering permanent magnet 20 with permanent magnet 20.
As described above, 20 one side of permanent magnet with do not have rotor core 10 insertion part 130 magnet reception hole in
Magnet reception hole 111 is inserted into wall contact on one side, therefore the insertion part 130 of the magnet reception hole eliminated by permanent magnet edge 21 is only
It is shaved unwanted amount.Therefore, permanent magnet 20 can be fixed in rotor core 10.Also, in not affixed insertion part
130 face, permanent magnet 20 are contacted with rotor core 10, so as to reduce the thermal resistance from permanent magnet 20 to rotor, therefore can
The temperature of permanent magnet 20 is inhibited to rise.
Description of symbols
1 ... rotor
2 ... stators
5 ... axis holes
10 ... rotor cores
11 ... magnet reception holes
12 ... opening portions edge
20 ... permanent magnets
21 ... permanent magnet edges
30 ... insertion parts
40 ... the magnet with insertion part
50 ... rotary shafts
110 ... the magnet reception hole with insertion part
111 ... magnet reception holes
130 ... insertion parts.
Claims (5)
1. a kind of rotating electric machine including rotor and stator, it is characterised in that:
The rotor includes:
Rotary shaft；
Permanent magnet；
It is formed with the rotor core of the incorporating section for storing the permanent magnet；With
The insertion part of the shear surface of the inner surface side in affixed face and the incorporating section with the permanent magnetism side, be used for by
The permanent magnet is fixed on the incorporating section,
The one side of the not affixed insertion part of the permanent magnet is contacted with the rotor core.
2. a kind of rotating electric machine including rotor and stator, it is characterised in that:
The rotor includes:
Rotary shaft；
Permanent magnet；
It is formed with the rotor core of the incorporating section for storing the permanent magnet；With
The insertion part of the shear surface in the affixed face of the inner surface side with the incorporating section and the permanent magnetism side, be used for by
The permanent magnet is fixed on the incorporating section,
The one side of the not affixed insertion part of the rotor core is contacted with the permanent magnet.
3. rotating electric machine as claimed in claim 1 or 2, it is characterised in that:
The insertion part is configured at the inner circumferential side of the permanent magnet.
4. rotating electric machine as claimed in claim 1 or 2, it is characterised in that:
The insertion part is configured at the circumferential lateral surface of the permanent magnet.
5. rotating electric machine as claimed in claim 1 or 2, it is characterised in that:
Thermal resistance between the permanent magnet and the rotor core is higher in the face for being provided with the insertion part and is being not provided with
The face of the insertion part is lower.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-114253 | 2016-06-08 | ||
| JP2016114253 | 2016-06-08 | ||
| PCT/JP2017/017996 WO2017212867A1 (en) | 2016-06-08 | 2017-05-12 | Rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109075634A true CN109075634A (en) | 2018-12-21 |
Family
ID=60578733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780029537.2A Pending CN109075634A (en) | 2016-06-08 | 2017-05-12 | Rotating electric machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6876692B2 (en) |
| CN (1) | CN109075634A (en) |
| WO (1) | WO2017212867A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022107632A1 (en) * | 2020-11-17 | 2022-05-27 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002058185A (en) * | 2001-06-22 | 2002-02-22 | Matsushita Electric Ind Co Ltd | Permanent magnet fixing method for buried permanent magnet motor |
| JP2003299280A (en) * | 2002-03-29 | 2003-10-17 | Honda Motor Co Ltd | Permanent magnet rotor |
| JP2010213516A (en) * | 2009-03-12 | 2010-09-24 | Nissan Motor Co Ltd | Permanent magnet type rotating machine and method for manufacturing permanent magnet for rotor |
-
2017
- 2017-05-12 JP JP2018522387A patent/JP6876692B2/en active Active
- 2017-05-12 WO PCT/JP2017/017996 patent/WO2017212867A1/en active Application Filing
- 2017-05-12 CN CN201780029537.2A patent/CN109075634A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002058185A (en) * | 2001-06-22 | 2002-02-22 | Matsushita Electric Ind Co Ltd | Permanent magnet fixing method for buried permanent magnet motor |
| JP2003299280A (en) * | 2002-03-29 | 2003-10-17 | Honda Motor Co Ltd | Permanent magnet rotor |
| JP2010213516A (en) * | 2009-03-12 | 2010-09-24 | Nissan Motor Co Ltd | Permanent magnet type rotating machine and method for manufacturing permanent magnet for rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2017212867A1 (en) | 2018-12-13 |
| JP6876692B2 (en) | 2021-05-26 |
| WO2017212867A1 (en) | 2017-12-14 |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |