CN109327087A - A kind of split type internal rotor Capstan rotor - Google Patents

A kind of split type internal rotor Capstan rotor Download PDF

Info

Publication number
CN109327087A
CN109327087A CN201811178617.7A CN201811178617A CN109327087A CN 109327087 A CN109327087 A CN 109327087A CN 201811178617 A CN201811178617 A CN 201811178617A CN 109327087 A CN109327087 A CN 109327087A
Authority
CN
China
Prior art keywords
magnetic patch
magnetic
pole
rotor
yoke
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
Application number
CN201811178617.7A
Other languages
Chinese (zh)
Inventor
黄晓亮
王志强
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.)
NINGBO XINDA ELEVATOR FITTING WORKS
Original Assignee
NINGBO XINDA ELEVATOR FITTING WORKS
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 NINGBO XINDA ELEVATOR FITTING WORKS filed Critical NINGBO XINDA ELEVATOR FITTING WORKS
Priority to CN201811178617.7A priority Critical patent/CN109327087A/en
Publication of CN109327087A publication Critical patent/CN109327087A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/272Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278Surface mounted magnets; Inset magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

Abstract

The invention discloses a kind of split type internal rotor Capstan rotors, which is characterized in that including rotor field spider and magnetic yoke;Magnetic yoke covers on the rotor field spider, and the outer wall of the magnetic yoke is provided with multiple magnetic patch groups along magnetic yoke axial arranging, and the magnetic patch group includes multiple magnetic patch being circumferentially arranged along magnetic yoke;Magnetic patch includes the pole S magnetic patch and the pole N magnetic patch, and the pole S magnetic patch and the pole N magnetic patch in each magnetic patch group are interspersed.Magnetic yoke is seperated with rotor field spider in the present invention, facilitates the maintenance of internal rotor Capstan rotor, and the magnetic patch dislocation to offset in adjacent magnetic yoke group, and the slot ripples and cogging torque of magneto are reduced with this;The position of the magnetic yoke can be limited by the cooperation of restriction protrusion on briquetting and rotor field spider, in addition, the briquetting be it is detachable, facilitate the maintenance and replacement of magnetic yoke.

Description

A kind of split type internal rotor Capstan rotor
Technical field
The present invention relates to traction machine technical field more particularly to a kind of split type internal rotor Capstan rotors.
Background technique
Since durface mounted permanent magnet synchronous motor is easily manufactured and advantage of lower cost, present internal rotor gearless permanent-magnet is same Traction machine is walked, mostly uses the scheme that magnetic patch is pasted onto rotor outer surface greatly.While in order to improve the electromagnetic performance of magneto, Rotor magnetic patch can be arranged in a manner of oblique pole or wrong pole, but since rare earth permanent magnet magnetic patch is often processed into wire cutting Type, oblique pole magnetic patch process more difficult, higher cost.And for wrong pole arrangement, because magnetic patch segmentation is staggeredly arranged, very Difficulty can place the magnetic slot of magnetic patch in the processing of rotor field spider surface, and prior art is usually the smooth cylindrical in rotor field spider The hole of multiple groups is beaten on face, each magnetic patch is separated and fix with strip made of non-magnet material, due to mutual between magnetic patch Attracting and repels, magnetic patch is not easy to discharge and paste uniformly, and manufacturing cost is higher, and magnetic pole imbalance will will affect electromagnetic performance, The problems such as also making traction machine generate noise and vibration when serious.
The problem of based on above-mentioned Capstan rotor, there is an urgent need to seek effective scheme to solve the above problems.
Summary of the invention
For the above-mentioned deficiency of the prior art, technical problem to be solved by the present invention lies in proposed a kind of easy for installation And batch production can be easy, be easy maintenance, a kind of split type internal rotor Capstan rotor that manufacturing cost is low and noise is small.
The technical solution used to solve the technical problems of the present invention is that a kind of split type internal rotor Capstan rotor, feature It is, comprising:
Rotor field spider;
Magnetic yoke;For its set on the rotor field spider, the outer wall of the magnetic yoke is provided with multiple magnetic along magnetic yoke axial arranging Block group, the magnetic patch group include multiple magnetic patch being circumferentially arranged along magnetic yoke;Magnetic patch includes the pole S magnetic patch and the pole N magnetic patch, each magnetic patch The pole S magnetic patch and the pole N magnetic patch in group are interspersed;The pole S magnetic patch and the pole S magnetic patch are default close to offseting and having in adjacent magnetic patch group Dislocation radian;The pole N magnetic patch and the pole N magnetic patch are close to offseting and have preset dislocation radian in adjacent magnetic patch group.
Preferably, multiple magnetic patch groups in magnetic yoke successively misplace clockwise or counterclockwise from left to right along magnetic yoke axial direction Default radian.
Preferably, the radian of each magnetic patch dislocation is equal in adjacent magnetic patch group.
Preferably, the magnetic patch in each magnetic patch group is uniformly distributed, and the pole the S magnetic patch in each magnetic patch group and the pole N magnetic patch Quantity is equal, and the pole the S magnetic patch and the pole N magnetic patch in each magnetic patch group distribute alternately.
Preferably, the outer wall of the magnetic yoke is provided with multiple magnetic slots, and each magnetic slot is for one in the fixed magnetic patch group A magnetic patch.
Preferably, the magnetic yoke is provided with the first keyway, and the rotor field spider is equipped with to be distinguished with the first keyway in magnetic yoke Corresponding multiple second keyways are provided with the key that can be protruded into the first keyway and then the fixed magnetic in multiple second keyways Yoke.
Preferably, the rotor field spider includes hollow body and multiple dowels, and multiple dowels are circumferentially arranged along hollow body In the outer wall of the hollow body.
Preferably, the right end of all dowels has restriction protrusion, and the left end of all dowels is arranged There is dismountable briquetting, multiple magnetic yokes are limited between restriction protrusion and briquetting.
Preferably, the left end of the dowel is equipped at least two bolts hole and bolt corresponding with number of bolt hole, institute Bolt is stated across the briquetting and is protruded into the bolt hole.
It preferably, further include across rotor field spider and the shaft that is fixedly linked with rotor field spider.
Magnetic yoke is seperated with rotor field spider in the present invention, facilitates the maintenance of internal rotor Capstan rotor, and in adjacent magnetic yoke group Offset magnetic patch dislocation, the slot ripples and cogging torque of magneto are reduced with this;Pass through the limit on briquetting and rotor field spider Position protrusions match can limit the position of the magnetic yoke, in addition, the briquetting be it is detachable, facilitate the maintenance and more of magnetic yoke It changes.
Detailed description of the invention
Fig. 1 is the schematic perspective view of split type internal rotor Capstan rotor in embodiment;
Fig. 2 is the front view of split type internal rotor Capstan rotor in embodiment;
Fig. 3 is the schematic perspective view of the rotor field spider of split type internal rotor Capstan rotor in embodiment.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described, However, the present invention is not limited to these examples.
Fig. 1-Fig. 3 is please referred to, the invention discloses a kind of split type internal rotor Capstan rotors, in order to facilitate rotor field spider 100 and magnetic yoke 200 installation;The Capstan rotor be it is split type, the Capstan rotor includes rotor field spider 100 and magnetic Yoke 200,200 sets of magnetic yoke on the rotor field spider 100.
The outer wall of the magnetic yoke 200 is provided with multiple magnetic patch groups along 200 axial arranging of magnetic yoke, and the magnetic patch group includes more A magnetic patch 210 being circumferentially arranged along magnetic yoke 200;Multiple magnetic patch 210 are to form a circle to form magnetic patch group.
Magnetic patch 210 includes the pole S magnetic patch 211 and the pole N magnetic patch 212, the pole S magnetic patch 211 and the pole N magnetic patch in each magnetic patch group 212 are interspersed.
The pole S magnetic patch 211 and the pole S magnetic patch 211 are close to offseting and have preset dislocation radian in adjacent magnetic patch group;Adjacent magnetic The pole N magnetic patch 212 and the pole N magnetic patch 212 are close to offseting and have preset dislocation radian in block group.The pole S magnetic patch 211 and the pole S magnetic patch Mutual position is mutually reinforced between 211 and then offseting.
In this embodiment, the pole S magnetic patch 211 and the pole N magnetic patch 212 it is equal in magnitude, shape is consistent;211 He of the pole S magnetic patch The pole N magnetic patch 212 is cuboid;The pole S magnetic patch 211 be magnetic patch 210 the pole S along magnetic yoke 200 radial direction outward;Institute State the pole S magnetic patch 211 be magnetic patch 210 the pole N along magnetic patch 210 radial direction outwardly;The pole N magnetic patch 212 is the N of magnetic patch 210 Pole along magnetic yoke 200 radial direction outwardly, the pole N magnetic patch 212 be magnetic patch 210 the pole S along magnetic patch 210 radial direction court It is interior.
Multiple magnetic patch groups in magnetic yoke 200 successively misplace clockwise or counterclockwise from left to right along 200 axial direction of magnetic yoke Default radian.Specifically, in adjacent magnetic patch group, two magnetic patch 210 to offset misplace, that is to say, that the magnetic patch 210 to offset It is staggered, the pole S magnetic patch 211 and the pole S magnetic patch 211 are staggered (the two is not aligned) in adjacent magnetic patch group, the pole the N magnetic in magnetic patch group Block 212 and the pole N magnetic patch 212 are staggered (the two is not aligned), and the tooth that adjacent magnetic patch group dislocation can play reduction magneto is humorous The effect of wave and cogging torque.
The radian that each magnetic patch 210 misplaces in adjacent magnetic patch group is equal, specifically, each magnetic patch in adjacent magnetic patch group 210 dislocation arc length be equal to length of the magnetic patch 210 in 200 circumferential direction of magnetic yoke subtract two offset magnetic patch 210 overlapping length. The arc length that each magnetic patch 210 misplaces in adjacent magnetic patch group is equal to radian divided by the length of 200 radius of magnetic yoke.It in this way can be to avoid magnetic It is extremely uneven to influence electromagnetic performance.
Magnetic patch 210 in each magnetic patch group is uniformly distributed, and the pole the S magnetic patch 211 in each magnetic patch group and the pole N magnetic patch 212 Quantity it is equal, the pole S magnetic patch 211 and the pole N magnetic patch 212 in each magnetic patch group distribute alternately;It is each also for improving in this way The uniformity of magnetic pole in magnetic patch 210.In this embodiment, the quantity of the magnetic patch 210 in each magnetic patch group is equal.
The outer wall of the magnetic yoke 200 is provided with multiple magnetic slots, and each magnetic slot is for a magnetic in the fixed magnetic patch group Block 210, specifically, the shape of magnetic patch 210 described in the shape adaptation by magnetic slot.
The magnetic yoke 200 is provided with the first keyway 220, and the rotor field spider 100 is equipped with and the first keyway in magnetic yoke 200 220 corresponding multiple second keyways 130 are provided with the key that can be protruded into the first keyway 220 in multiple second keyways 130 And then the fixed magnetic yoke 200.Specifically, the magnetic yoke 200 is fixedly linked with the rotor field spider 100, for convenience of magnetic yoke 200 and rotor field spider 100 installation, the second keyway 130 is offered on rotor field spider 100, the magnetic yoke 200 is provided with and institute Corresponding first keyway 220 of the second keyway 130 is stated, the magnetic yoke 200 is connected by key with the rotor field spider 100, wherein key It protrudes into the first keyway 220 and the second keyway 130.
The rotor field spider 100 includes hollow body 110 and multiple dowels 120, and multiple dowels 120 are along hollow body 110 It is circumferentially arranged the outer wall in the hollow body 110.In this embodiment, the hollow body 110 and multiple dowels 120 are linked to be One, second keyway 130 are arranged on the dowel 120, and 200 sets of the magnetic yoke is in the hollow body 110, and described the Two keyways 130 are corresponding with first keyway 220, and the outer wall of the hollow body 110 is bonded with the inner wall of the dowel 120 and connects Touching.
The right end of all dowels 120 has restriction protrusion 121, and the left end of all dowels 120 is set It is equipped with dismountable briquetting 122, the magnetic yoke 200 is limited between restriction protrusion 121 and briquetting 122;Specifically, described Dismountable briquetting 122 is detachable, by 200 sets of the magnetic yoke on the rotor field spider 100, is resisted by the briquetting 122 The magnetic yoke 200, briquetting 122 is for fixing the magnetic yoke 200.
The left end of the dowel 120 is equipped at least two bolts, 123 hole and bolt corresponding with 123 hole number of bolt 123, the bolt 123 passes through the briquetting 122 and protrudes into 123 hole of bolt;In this embodiment, briquetting 122 is logical It crosses bolt 123 to connect with the dowel 120, loosers a bolt 123, remove briquetting 122,200 sets of magnetic yoke in the rotor field spider On 100, briquetting 122 is pressed in the magnetic yoke 200, can be tightened by bolt 123 and briquetting 122 is pressed in magnetic yoke 200, in turn Magnetic yoke 200 is fixed on rotor field spider 100.
It further include across rotor field spider 100 and the shaft that is fixedly linked with rotor field spider 100.
Compared with prior art, which is split type to the internal rotor Capstan rotor, and Magnetic yoke 200 in internal rotor Capstan rotor is detachably connected with the rotor field spider 100, especially by rotor field spider 100 Restriction protrusion 121 and the cooperation of briquetting 122 limit the position of the magnetic yoke 200.Split type internal rotor Capstan rotor, wherein Magnetic yoke 200 is easily worked, and magnetic yoke 200 is hollow cylinder, and the magnetic slot in the magnetic yoke 200 can be processed by milling machine;Magnetic yoke 200 shape and structure facilitates fixation, in addition, magnetic yoke 200 goes wrong, also facilitates maintenance, briquetting 122 is dismantled, by the magnetic Yoke 200 is removed from the rotor field spider 100, and the intact magnetic yoke 200 is being covered on the rotor field spider 100.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims (10)

1. a kind of split type internal rotor Capstan rotor characterized by comprising
Rotor field spider;
Magnetic yoke;For its set on the rotor field spider, the outer wall of the magnetic yoke is provided with multiple magnetic patch groups along magnetic yoke axial arranging, The magnetic patch group includes multiple magnetic patch being circumferentially arranged along magnetic yoke;Magnetic patch includes the pole S magnetic patch and the pole N magnetic patch, in each magnetic patch group The pole S magnetic patch and the pole N magnetic patch be interspersed;The pole S magnetic patch and the pole S magnetic patch are close to offseting and have preset mistake in adjacent magnetic patch group Position radian;The pole N magnetic patch and the pole N magnetic patch are close to offseting and have preset dislocation radian in adjacent magnetic patch group.
2. a kind of split type internal rotor Capstan rotor according to claim 1, it is characterised in that: multiple magnetic in magnetic yoke Block group successively misplaces clockwise or counterclockwise from left to right along magnetic yoke axial direction and presets radian.
3. a kind of split type internal rotor Capstan rotor according to claim 2, it is characterised in that: each in adjacent magnetic patch group The radian of a magnetic patch dislocation is equal.
4. a kind of split type internal rotor Capstan rotor according to claim 3, it is characterised in that: in each magnetic patch group Magnetic patch is uniformly distributed, and the pole the S magnetic patch in each magnetic patch group is equal with the quantity of the pole N magnetic patch, the pole the S magnetic patch in each magnetic patch group It distributes alternately with the pole N magnetic patch.
5. a kind of split type internal rotor Capstan rotor according to claim 4, it is characterised in that: the outer wall of the magnetic yoke Multiple magnetic slots are provided with, each magnetic slot is for a magnetic patch in the fixed magnetic patch group.
6. a kind of split type internal rotor Capstan rotor according to claim 1, it is characterised in that: the magnetic yoke is provided with First keyway, the rotor field spider are equipped with multiple second keyways corresponding with the first keyway in magnetic yoke, multiple second keys The key that can be protruded into the first keyway and then the fixed magnetic yoke are provided in slot.
7. a kind of split type internal rotor Capstan rotor according to claim 1, it is characterised in that: the rotor field spider packet Hollow body and multiple dowels are included, multiple dowels are circumferentially arranged the outer wall in the hollow body along hollow body.
8. a kind of split type internal rotor Capstan rotor according to claim 7, it is characterised in that: all connections The right end of muscle has restriction protrusion, and the left end of all dowels is provided with dismountable briquetting, and the magnetic yoke is limited Between restriction protrusion and briquetting.
9. a kind of split type internal rotor Capstan rotor according to claim 8, it is characterised in that: a left side for the dowel End is equipped at least two bolts hole and bolt corresponding with number of bolt hole, and the bolt passes through the briquetting and protrudes into the spiral shell In keyhole.
10. a kind of split type internal rotor Capstan rotor according to claim 1, it is characterised in that: further include across turn Submounts and the shaft being fixedly linked with rotor field spider.
CN201811178617.7A 2018-10-10 2018-10-10 A kind of split type internal rotor Capstan rotor Pending CN109327087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811178617.7A CN109327087A (en) 2018-10-10 2018-10-10 A kind of split type internal rotor Capstan rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811178617.7A CN109327087A (en) 2018-10-10 2018-10-10 A kind of split type internal rotor Capstan rotor

Publications (1)

Publication Number Publication Date
CN109327087A true CN109327087A (en) 2019-02-12

Family

ID=65261673

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811178617.7A Pending CN109327087A (en) 2018-10-10 2018-10-10 A kind of split type internal rotor Capstan rotor

Country Status (1)

Country Link
CN (1) CN109327087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111600405A (en) * 2019-02-21 2020-08-28 北京金风科创风电设备有限公司 Magnetic pole module, rotor, assembly method of rotor and motor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1472873A (en) * 2002-07-29 2004-02-04 西北工业大学 Brushless rareearth persistant magnet DC motor
CN2899246Y (en) * 2006-04-27 2007-05-09 中山大洋电机股份有限公司 Rotor assembly structure of reversing electronic motor
CN203774914U (en) * 2014-02-10 2014-08-13 珠海格力节能环保制冷技术研究中心有限公司 Permanent-magnetic rotor
CN205753862U (en) * 2016-05-13 2016-11-30 杭州江河水电科技有限公司 A kind of novel radial direction wedging structure
CN107086720A (en) * 2017-04-18 2017-08-22 快意电梯股份有限公司 Internal rotor permanent-magnetic synchro traction machine
CN209016816U (en) * 2018-10-10 2019-06-21 宁波欣达电梯配件厂 A kind of split type internal rotor Capstan rotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1472873A (en) * 2002-07-29 2004-02-04 西北工业大学 Brushless rareearth persistant magnet DC motor
CN2899246Y (en) * 2006-04-27 2007-05-09 中山大洋电机股份有限公司 Rotor assembly structure of reversing electronic motor
CN203774914U (en) * 2014-02-10 2014-08-13 珠海格力节能环保制冷技术研究中心有限公司 Permanent-magnetic rotor
CN205753862U (en) * 2016-05-13 2016-11-30 杭州江河水电科技有限公司 A kind of novel radial direction wedging structure
CN107086720A (en) * 2017-04-18 2017-08-22 快意电梯股份有限公司 Internal rotor permanent-magnetic synchro traction machine
CN209016816U (en) * 2018-10-10 2019-06-21 宁波欣达电梯配件厂 A kind of split type internal rotor Capstan rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111600405A (en) * 2019-02-21 2020-08-28 北京金风科创风电设备有限公司 Magnetic pole module, rotor, assembly method of rotor and motor
CN111600405B (en) * 2019-02-21 2023-09-22 北京金风科创风电设备有限公司 Magnetic pole module, rotor, assembling method of rotor and motor

Similar Documents

Publication Publication Date Title
US8664822B2 (en) Bi-permanent magnets in synchronous machines
US7598645B2 (en) Stress distributing permanent magnet rotor geometry for electric machines
JP5677584B2 (en) Rotor, compressor and refrigeration air conditioner for embedded permanent magnet motor
US20060214533A1 (en) Permanent magnet rotary motor
JP2003018777A (en) Electric motor
CN209016816U (en) A kind of split type internal rotor Capstan rotor
US20130249342A1 (en) Cantilevered Rotor Magnet Support
CN102055251A (en) Permanent-magnet motor capable of effectively eliminating slot effect
US9979243B2 (en) Low cost injection molded buried permanent magnet motor for an electric power steering system
CN109327087A (en) A kind of split type internal rotor Capstan rotor
CN204304642U (en) Electric rotating machine
CN109327086A (en) A kind of internal rotor traction machine rotor
CN210120439U (en) Motor, compressor and refrigeration plant
CN113273057B (en) Interior permanent magnet electric machine with flux distribution gap
CN102664475A (en) Low-fluctuation built-in permanent magnet rotor for brushless motor
CN208955766U (en) A kind of internal rotor traction machine rotor
JP5959616B2 (en) Rotor, compressor and refrigeration air conditioner for embedded permanent magnet motor
US8878411B2 (en) High efficiency permanent magnet machine with separated tab pole rotor and stacked ceramic magnet sections
US9407115B2 (en) Shaft attachment means for high efficiency permanent magnet machine with separated tab pole rotor
CN107615619B (en) External rotor electric machine with SMC blocks interposed between permanent magnets
CN108880027B (en) Motor and motor rotor
CN201570919U (en) Permanent-magnet machine for effectively eliminating cogging effect
CN105576869B (en) A kind of surface inserting formula self-starting permasyn motor rotor
CN107834717A (en) Motor
CN111293803A (en) Rotor punching sheet, rotor, motor and die

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