CN112217356B - Method for manufacturing fan stator structure - Google Patents

Method for manufacturing fan stator structure Download PDF

Info

Publication number
CN112217356B
CN112217356B CN202011024508.7A CN202011024508A CN112217356B CN 112217356 B CN112217356 B CN 112217356B CN 202011024508 A CN202011024508 A CN 202011024508A CN 112217356 B CN112217356 B CN 112217356B
Authority
CN
China
Prior art keywords
coil
fan
stator
manufacturing
coil conductive
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.)
Active
Application number
CN202011024508.7A
Other languages
Chinese (zh)
Other versions
CN112217356A (en
Inventor
卢彦志
陈信宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asia Vital Components Shenzhen Co Ltd
Original Assignee
Asia Vital Components Shenzhen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asia Vital Components Shenzhen Co Ltd filed Critical Asia Vital Components Shenzhen Co Ltd
Priority to CN202011024508.7A priority Critical patent/CN112217356B/en
Publication of CN112217356A publication Critical patent/CN112217356A/en
Application granted granted Critical
Publication of CN112217356B publication Critical patent/CN112217356B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435Wound windings
    • H02K15/0442Loop windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08Forming windings by laying conductors into or around core parts
    • H02K15/095Forming windings by laying conductors into or around core parts by laying conductors around salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/32Windings characterised by the shape, form or construction of the insulation
    • H02K3/34Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/52Fastening salient pole windings or connections thereto
    • H02K3/521Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention provides a manufacturing method of a fan stator structure, which comprises the following steps: providing a fan stator; providing a plurality of coil conductive fixing brackets arranged at one end of the fan stator; the invention can improve the defects that the head and the tail ends of the traditional fan stator coil can be wound only manually and welded with a circuit board to leak tin and the like.

Description

Method for manufacturing fan stator structure
Technical Field
The invention relates to a method for manufacturing a fan stator structure, in particular to a method for manufacturing a fan stator structure capable of improving the efficiency of winding coils on a fan stator, arranging wires at the head end and the tail end of the coils and combining and electrically connecting the coils and a circuit board.
Background
The most important part of the fan is that the stator set and the rotor set are mutually arranged and run by means of induction excitation, wherein the stator set 5 is formed by stacking a plurality of silicon steel sheets 51, arranging upper and lower insulating frames 52 and 53 at the upper and lower ends, winding a coil 54 on each pole, and finally welding the coil and a circuit board 55 to complete the manufacturing operation.
In the prior art, the winding of the coil 54 on the stator assembly 5 can be performed manually or by an automated machine, the winding operation is mainly performed by wrapping the head end 541 of the coil 54 around one of the poles for fixing (as shown in fig. 1 a), keeping the head end 541 as a free end and winding the free end in a twist shape (as shown in fig. 1 b), then performing the winding operation on each pole, and finally performing the wire arrangement operation on the head end 541 and the tail end 542 of the coil 54; however, in the prior art, the winding wire is only manually arranged by the twist-shaped winding wire, which is very labor-consuming and time-consuming, and the twist-shaped winding wire at the first and the last ends 541 and 542 of the winding coil 54 is different in diameter and length after the winding wire is arranged by different people, so that the length of the winding wire must be adjusted by a trimming procedure (see fig. 2a and 2 b).
Furthermore, when the first and the second ends 541, 542 of the coil 54 are inserted into and electrically connected with the circuit board 55, the coil 54 is fixed by soldering (as shown in fig. 2 c) manually, and since the first and the second ends 541, 542 are enlarged after winding, the corresponding opening 56 on the circuit board 55 must be enlarged, and when the opening is enlarged, the problem of tin leakage occurs, and the solder tin package 6 on the circuit board 55 corresponding to the soldered portion is enlarged a lot, and the first and the second ends 541, 542 of the coil 54 left after soldering is not beautiful enough, and the length is too long to cause short circuit, so that it is time-consuming to perform a cutting process, as shown in fig. 1a, 1b, 2a, 2b, 2c.
Although the stator of the conventional fan can be wound by a mechanical automatic machine during the winding operation, the final wire arrangement step after the winding operation is completed still needs to be manually performed, and thus, the production efficiency, the manufacturing cost and the yield are still not good.
Therefore, how to improve the existing defects and reduce the labor hour and the labor force, and further reduce the failure rate, is the first goal of the current business.
Disclosure of Invention
Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a fan stator structure which can save labor and reduce manufacturing time.
To achieve the above object, the present invention provides a method for manufacturing a stator structure of a fan, comprising the steps of:
providing a fan stator;
providing a plurality of coil conductive fixing brackets arranged at one end of the fan stator;
and winding the coil on the fan stator, and respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixed brackets to be combined with the coil conductive fixed brackets.
The manufacturing method of the fan stator structure comprises the following steps: the fan stator is provided with a silicon steel sheet group and a plurality of insulating frames, the silicon steel sheet group is formed by stacking a plurality of silicon steel sheets, the upper end and the lower end of the silicon steel sheet group are respectively provided with an insulating frame, and the coil conductive fixing support is arranged on the insulating frame at the lower end of the fan stator.
The manufacturing method of the fan stator structure comprises the following steps: in the following steps: after the coil is wound on the fan stator and the front section and the end section of the coil are respectively arranged on the plurality of coil conductive fixing brackets and combined with the plurality of coil conductive fixing brackets, the method also comprises the following steps: and welding the joint of the coil conductive fixing bracket and the coil.
The manufacturing method of the fan stator structure comprises the following steps: in the step: in the "welding the joint of the coil conductive fixing bracket and the coil", the welding is resistance welding or laser welding.
The manufacturing method of the fan stator structure comprises the following steps: in the following steps: after the coil is wound on the fan stator and the front section and the end section of the coil are respectively arranged on the plurality of coil conductive fixed brackets and combined with the coil conductive fixed brackets, the method also comprises the following steps: the coil conductive fixing bracket of the fan stator is fixed and electrically connected with a circuit board.
The manufacturing method of the fan stator structure comprises the following steps: the surface of the coil conductive fixing support is provided with a solder layer.
The manufacturing method of the fan stator structure comprises the following steps: in the following steps: the method comprises the following steps of fixing and electrically connecting a coil conductive fixing support of the fan stator with a circuit board: the coil conductive fixing bracket of the fan stator is fixed and electrically connected with a circuit board.
The manufacturing method of the fan stator structure comprises the following steps: the coil conductive fixing support is provided with an inserting end, a spanning groove and a fixed end, the inserting end and the fixed end are respectively arranged at two ends of the coil conductive fixing support, and the spanning groove is arranged at one side adjacent to the inserting end and is lower than the inserting end.
The manufacturing method of the fan stator structure can greatly reduce the manufacturing working hours and save the labor, thereby reducing the manufacturing cost and improving the production efficiency and the qualification rate.
Drawings
FIG. 1a is a schematic view of a conventional fan stator;
FIG. 1b is a schematic view of a conventional fan stator;
FIG. 2a is a schematic view of a conventional fan stator;
FIG. 2b is a schematic view of a conventional fan stator;
FIG. 2c is a schematic view of a conventional fan stator;
FIG. 3 is a flow chart illustrating the steps of a first embodiment of a method for manufacturing a stator structure of a fan in accordance with the present invention;
FIG. 4a is a perspective view of a stator structure of a fan according to a first embodiment of the method for manufacturing a stator structure of a fan according to the present invention;
FIG. 4b is a schematic view of the coil conductive fixing bracket of the first embodiment of the manufacturing method of the stator structure of the fan according to the present invention;
FIG. 5 is a flow chart of steps in a second embodiment of a method of manufacturing a fan stator structure in accordance with the present invention;
FIG. 6 is a perspective view of a stator structure of a fan in accordance with a second embodiment of the method for manufacturing a stator structure of a fan in accordance with the present invention;
FIG. 7 is a flow chart of steps in a method of manufacturing a fan stator structure according to a third embodiment of the present invention;
fig. 8 is a perspective view of a stator structure of a fan according to a third embodiment of the method for manufacturing a stator structure of a fan according to the present invention.
Description of reference numerals: a fan stator 1; a silicon steel sheet 11; an insulating frame 12; a coil conductive fixing bracket 2; a plug-in end 21; straddling the groove 22; a fixed end 23; a coil 3; a circuit board 4; a hole 41; a weld 42; an existing stator group 5; a silicon steel sheet 51; an upper insulating frame 52; a lower insulating frame 53; a coil 54; a circuit board 55; a hole 56; and a tin coating 6.
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
Referring to fig. 3, fig. 4a and fig. 4b, a flow chart of steps of a manufacturing method of a stator structure of a fan according to a first embodiment of the present invention, a perspective view of the stator structure of the fan, and a schematic view of a coil conductive fixing bracket are shown, wherein the manufacturing method of the stator structure of the fan includes the following steps:
s1: providing a fan stator;
providing a fan stator 1, wherein the fan stator 1 is provided with a silicon steel sheet group 11 and a plurality of insulating frames 12, the silicon steel sheet group 11 is formed by stacking a plurality of silicon steel sheets, and the plurality of insulating frames 12 are arranged at the upper end and the lower end of the plurality of silicon steel sheet groups 1;
s2: providing a plurality of coil conductive fixing brackets arranged at one end of the fan stator;
the utility model provides a plurality of electrically conductive fixed bolster 2 of coil, electrically conductive fixed bolster 2 of coil has one and pegs graft end 21 and one strides and establishes groove 22 and a stiff end 23, peg graft end 21 and this stiff end 23 branch locate the first and last both ends of electrically conductive fixed bolster 2 of this coil, should stride and establish groove 22 and set up the at least one side of neighbouring this peg graft end 21 to be less than this peg graft end 21, electrically conductive fixed bolster 2 of coil sets up in the insulator bracket 12 of this fan stator lower extreme through this peg graft end 21, and of course also can be through the integrative package of mode of penetrating with electrically conductive fixed bolster 2 of this coil and this insulator bracket 12 integrative package injection molding.
S3: and winding the coil on the fan stator, and respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixed brackets to be combined with the coil conductive fixed brackets.
The coil winding operation can be performed on the fan stator 1 through a manual or automatic winding machine, firstly, the front section of the coil 3 is fixed on the coil conductive fixing support 2 in a crossing mode, the winding operation is performed on each pole of the fan stator 1, after the winding operation is completed, the tail end of the coil 3 is arranged on the other coil conductive fixing support 2 in a crossing mode or hung mode, when the tail end of the coil 3 is combined with the coil conductive fixing support 2, the insulating layer outside the coil 3 is rubbed by the crossing grooves 22 of the coil conductive fixing support 2 to fall off, and the copper wire inside the coil 3 is directly exposed to ensure that the copper wire is electrically connected with the coil conductive fixing support 2.
The manufacturing method of the fan stator structure can improve the operation that the wire arrangement and the wire winding can be carried out only by a manual mode after the existing stator winding operation is finished, thereby greatly improving the manufacturing efficiency, reducing the use of labor hour and labor, further improving the qualified rate of the manufacturing process and reducing the manufacturing cost.
Referring to fig. 5 and 6, a flow chart and a processing schematic diagram of steps of a manufacturing method of a stator structure of a fan according to a second embodiment of the present invention are shown, wherein the manufacturing method of the stator structure of the fan includes the following steps:
s1: providing a fan stator;
s2: providing a plurality of coil conductive fixing brackets arranged at one end of the fan stator;
s3: winding the coil on the fan stator, and respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixed brackets to be combined with the coil conductive fixed brackets;
the content of this embodiment is partially the same as that of the first embodiment, and therefore will not be described herein again, but the difference between this embodiment and the first embodiment lies in the steps: the method comprises the following steps of winding a coil on the fan stator, and respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixed brackets to be combined with the coil conductive fixed brackets, and then further comprises the following steps:
s4: and welding the joint of the coil conductive fixing bracket and the coil.
Aiming at the part of the coil 3 which is arranged across or hung on the plurality of coil 3 conductive fixed brackets 2, the part is welded, the conductivity and the bonding strength of the coil 3 and the coil conductive fixed brackets 2 are increased by means of the welding operation, the welding operation is resistance or laser welding, the resistance welding generates heat after generating resistance by contacting the coil conductive fixed brackets 2, so that the coil 3 and the coil conductive fixed brackets 2 are fused, an insulating layer on the surface of the coil 3 is damaged, and the electric connection of the coil 3 and the coil conductive fixed brackets 2 is ensured.
Referring to fig. 7 and 8, a flow chart of steps and a perspective view of a stator structure of a fan according to a third embodiment of the present invention are shown, wherein the method for manufacturing the stator structure of the fan includes the following steps:
s1: providing a fan stator;
s2: providing a plurality of coil conductive fixing brackets arranged at one end of the fan stator;
s3: winding the coil on the fan stator, and respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixed brackets to be combined with the coil conductive fixed brackets;
the present embodiment is partially the same as the first embodiment, and therefore will not be described herein again, but the difference between the present embodiment and the first embodiment is in step S3: the method comprises the following steps of winding the coil of the fan stator, respectively arranging the front section and the tail section of the coil 3 on the plurality of coil conductive fixed brackets 2, and combining the front section and the tail section with the plurality of coil conductive fixed brackets 2, and then further comprises the following steps:
step S5: the coil conductive fixing bracket of the fan stator is fixed and electrically connected with a circuit board.
When the aforementioned step S3 is completed: the method comprises the steps of winding the coil of the fan stator, respectively arranging the front section and the tail section of the coil on the plurality of coil conductive fixing supports to be combined with the plurality of coil conductive fixing supports, further fixing and electrically connecting the fan stator 1 and a circuit board 4 to complete a complete fan stator 1, combining the circuit board 4 and the fan stator 1 through the coil conductive fixing supports 2, combining the fan stator 1 and the circuit board 4 mainly in two modes, correspondingly welding the fan stator 1 on circuit contacts on the surface of the circuit board 4 through the coil conductive fixing supports 2 to be electrically connected with the circuit board, adhering a solder layer on the surface or one end of the coil conductive fixing supports 2 in the welding mode, and melting the solder layer to electrically connect the coil conductive fixing supports 2 and the circuit board 4 after heating.
Another combination method is that the circuit board 4 and the part of the coil conductive fixing support 2 of the fan stator 1 to be correspondingly assembled are provided with holes 41, and the coil conductive fixing support 2 can be combined with the holes 41 in a tight fit manner, and the wall surface of the holes 41 is provided with a conductive layer, so that the coil conductive fixing support 2 and the circuit board 4 are electrically connected by virtue of the conductive layer, or the circuit board 4 is provided with welding points 42 around the holes 41, and the coil conductive fixing support 2 correspondingly penetrates through the circuit board 4 through the holes 41 and then electrically connects the coil conductive fixing support 2 and the circuit board in a tin spot welding manner.
The invention mainly aims to overcome the defects that complex procedures such as wire arrangement, trimming, circuit board welding and the like of a coil head and a tail section can only be manually performed after the winding work of the conventional fan stator is finished, the labor is consumed, the reject ratio is high and the like, and the manufacturing method of the fan stator structure can be used for further matching with other automatic equipment to finish the full-automatic production of the fan stator, so that the labor cost is saved, and the production efficiency and the processing qualified rate are improved.

Claims (6)

1. A method for manufacturing a stator structure of a fan is characterized by comprising the following steps:
providing a fan stator;
providing a plurality of coil conductive fixed brackets arranged at one end of the fan stator, wherein each coil conductive fixed bracket is provided with an inserting end, a spanning groove and a fixed end, the inserting end and the fixed end are respectively arranged at two ends of the coil conductive fixed bracket, and the spanning groove is arranged at one side adjacent to the inserting end and is lower than the inserting end;
and when the coil is combined, the insulating layer outside the coil is rubbed by the crossing grooves of the coil conductive fixing support to fall off, so that the copper wire inside the coil is directly exposed and electrically connected with the coil conductive fixing support.
2. The method of manufacturing a stator structure for a fan according to claim 1, wherein: the fan stator is provided with a silicon steel sheet group and a plurality of insulating frames, the silicon steel sheet group is formed by stacking a plurality of silicon steel sheets, the upper end and the lower end of the silicon steel sheet group are respectively provided with an insulating frame, and the coil conductive fixing support is arranged on the insulating frame at the lower end of the fan stator.
3. The method of manufacturing a stator structure for a fan according to claim 1, wherein: in the following steps: after the coil winding is carried out on the fan stator, and the front section and the tail section of the coil are respectively arranged on the plurality of coil conductive fixed brackets and combined with the coil conductive fixed brackets, the method also comprises the following steps: and welding the joint of the coil conductive fixing bracket and the coil.
4. A method of manufacturing a fan stator structure as claimed in claim 3, wherein: in the step: in the "welding the joint of the coil conductive fixing bracket and the coil", the welding is resistance welding or laser welding.
5. The method of manufacturing a stator structure for a fan according to claim 1, wherein: in the following steps: after the coil winding is carried out on the fan stator and the front section and the tail section of the coil are respectively arranged on the plurality of coil conductive fixing brackets and combined with the plurality of coil conductive fixing brackets, the method also comprises the following steps: the coil conductive fixing bracket of the fan stator is fixed and electrically connected with a circuit board.
6. The method of manufacturing a stator structure for a fan according to claim 1, wherein: the surface of the coil conductive fixing support is provided with a solder layer.
CN202011024508.7A 2020-09-25 2020-09-25 Method for manufacturing fan stator structure Active CN112217356B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011024508.7A CN112217356B (en) 2020-09-25 2020-09-25 Method for manufacturing fan stator structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011024508.7A CN112217356B (en) 2020-09-25 2020-09-25 Method for manufacturing fan stator structure

Publications (2)

Publication Number Publication Date
CN112217356A CN112217356A (en) 2021-01-12
CN112217356B true CN112217356B (en) 2022-12-02

Family

ID=74051162

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011024508.7A Active CN112217356B (en) 2020-09-25 2020-09-25 Method for manufacturing fan stator structure

Country Status (1)

Country Link
CN (1) CN112217356B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08126238A (en) * 1994-10-27 1996-05-17 Mitsumi Electric Co Ltd Outer rotor type two-phase brushless motor
CN1213210A (en) * 1997-09-29 1999-04-07 泽藤电机株式会社 Coil connecting structure in outer rotor-type multi-pole generator
CN1722567A (en) * 2004-07-16 2006-01-18 鸿富锦精密工业(深圳)有限公司 Motor stator
CN101479914A (en) * 2006-08-04 2009-07-08 依必安-派特穆尔芬根股份有限两合公司 Stator having a switch disc

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0759288A (en) * 1993-08-18 1995-03-03 Sankyo Seiki Mfg Co Ltd Stator of brushless motor
JP3800371B2 (en) * 1997-06-27 2006-07-26 株式会社安川電機 Rotating electric machine
JP5875886B2 (en) * 2012-02-08 2016-03-02 本田技研工業株式会社 Rotating electric machine stator
CN107171465B (en) * 2016-03-07 2020-09-08 德昌电机(深圳)有限公司 Stator and motor with same
JP2020088981A (en) * 2018-11-20 2020-06-04 日本電産株式会社 Stator unit, motor, and air blowing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08126238A (en) * 1994-10-27 1996-05-17 Mitsumi Electric Co Ltd Outer rotor type two-phase brushless motor
CN1213210A (en) * 1997-09-29 1999-04-07 泽藤电机株式会社 Coil connecting structure in outer rotor-type multi-pole generator
CN1722567A (en) * 2004-07-16 2006-01-18 鸿富锦精密工业(深圳)有限公司 Motor stator
CN101479914A (en) * 2006-08-04 2009-07-08 依必安-派特穆尔芬根股份有限两合公司 Stator having a switch disc

Also Published As

Publication number Publication date
CN112217356A (en) 2021-01-12

Similar Documents

Publication Publication Date Title
US6501206B2 (en) Stator of dynamo-electric machine and manufacturing method therefor
CN105322686B (en) A kind of connection structure and its method for winding of three-phase windings brushless electric machine lead-out wire
CN1027206C (en) Stator of rotating electric machine
CN106181202A (en) A kind of fine line diameter coil welding tooling and welding method
JP3908588B2 (en) Small motor rotor and method of manufacturing the same
CN112217356B (en) Method for manufacturing fan stator structure
JPH05300687A (en) Motor and manufacture thereof
CN201365145Y (en) Structure of motor stator
US11894735B2 (en) Manufacturing method of fan stator structure
JPH09261905A (en) Armature
TWI739609B (en) Manufacturing method of fan stator structure
CN213151732U (en) Fan stator structure
TWI750823B (en) Fan stator structure
KR20110038277A (en) A fabricatoion method of a inductor
CN213243766U (en) Connection structure of motor winding
CN112165186A (en) Fan stator structure
JP2000295821A (en) Disposition of pair lead wires, and method of joining ends thereof, and manufacture of winding of rotating machine using the same
CN220653053U (en) Aluminum wire motor stator
CN210327197U (en) Interior wound stator structure and motor with control panel
TWM604982U (en) Stator structure of fan
CN213243673U (en) EPS motor PCB board winding connection structure
CN1374735A (en) Rotor of small motor and its producing method
CN220553908U (en) Motor stator with circuit board
CN210016342U (en) Coil lead-out wire wiring structure
CN217157923U (en) Inductor capable of improving production efficiency

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant