WO2006064860A1 - Moteur avec une structure a double isolation et appareil electrique utilisant le meme moteur - Google Patents

Moteur avec une structure a double isolation et appareil electrique utilisant le meme moteur Download PDF

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Publication number
WO2006064860A1
WO2006064860A1 PCT/JP2005/022993 JP2005022993W WO2006064860A1 WO 2006064860 A1 WO2006064860 A1 WO 2006064860A1 JP 2005022993 W JP2005022993 W JP 2005022993W WO 2006064860 A1 WO2006064860 A1 WO 2006064860A1
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WO
WIPO (PCT)
Prior art keywords
motor
core
rotary shaft
iron
rotor
Prior art date
Application number
PCT/JP2005/022993
Other languages
English (en)
Inventor
Yasuo Nanbu
Takanori Amaya
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to CN2005800390302A priority Critical patent/CN101057383B/zh
Priority to JP2007516706A priority patent/JP2008519577A/ja
Publication of WO2006064860A1 publication Critical patent/WO2006064860A1/fr

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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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Definitions

  • the present invention relates to a motor having a double -insulation structure and used as a driving source in electrical apparatuses, which basically use water, such as a washing machine, a dish washer/dryer, and a kitchen garbage processor.
  • Washing machines, pumps of dish washers/dryers, and kitchen garbage processors employ motors as their driving sources.
  • An output shaft of those motors works or possibly works in the water, so that a reliable double insulation or grounding insulation is needed to those motors.
  • motors such as toroidal-winding motors have been difficult to employ the grounding insulation, so that they have been obliged to employ the double insulation, i.e. windings are insulated from a stator iron-core by resin as basic insulation, then the iron-core is insulated from a rotary shaft as additional insulation.
  • This conventional double insulation is disclosed in, e.g. Japanese Patent Unexamined Publication No. 2003 - 23742.
  • Fig. 1OA shows a sectional view illustrating a structure of this conventional motor
  • Fig. 1OB shows an enlarged view illustrating an area around the rotary shaft of the motor shown in Fig. 1OA.
  • Winding 104 is wound on stator iron-core 102 insulated by resin 103, thereby forming stator 101.
  • Rotary shaft 113 is provided with grooves smaller than an outer diameter of an output section of shaft 113 at around a section where rotor iron-core 112 is to be fixed, and the grooves are filled with insulating resin 117 to be flush with the outer surface of shaft 113.
  • Rotary shaft 113 is press-fitted into the inside of rotor iron-core 112, the inside is provided with aluminum die cast.
  • Rotor 111 is rotatably supported by bearing 105.
  • Rotary shaft 113a is provided with insulating resin 117a at around a section where a rotor iron-core is fixed to shaft 113a, meanwhile shaft 113a is straight and does not have grooves. Shaft 113a is press-fitted into the inside of rotor iron-core 112. The aluminum die cast is buried inside iron-core 112.
  • Fig. 12 shows a structure of a tooling die for manufacturing the rotary shaft shown in Fig. 1OB.
  • Rotary shaft 123 is set between upper die 121 and lower die 122, and resin is poured from gate 124 for completing the molding.
  • Fig. 13 shows a structure of a tooling die for manufacturing the rotary shaft shown in Fig. HB.
  • Rotary shaft 133 is set between upper die 131 and lower die 132, and resin is poured from gate 134 for completing the molding.
  • a motor of the present invention comprises the following elements: a stator having a stator iron-core and a winding insulated from the iron-core; and a rotor having a rotary shaft and a rotor iron-core of which inside is equipped with a resin insulator, and the rotor iron-core being coupled to the rotary shaft via the resin insulator.
  • the foregoing structure allows achieving a motor with double insulation in an extremely simple construction, so that an inexpensive and reliable motor is obtainable.
  • Fig. 1 shows a sectional view illustrating a structure of a motor in accordance with a first embodiment of the present invention.
  • Fig. 2 shows an enlarged view of an essential part of the motor.
  • Figs. 3A and 3B schematically show manufacturing steps of the motor in accordance with the first embodiment of the present invention.
  • Figs. 4A - 41 schematically show creeping distances of the motors in accordance with the first embodiment of the present invention.
  • Fig. 5 shows a sectional view illustrating a step of assembling a rotor of a motor in accordance with a second embodiment of the present invention.
  • Figs. 6A and 6B show sectional views illustrating an assembling of a rotor of a motor in accordance with a third embodiment of the present invention.
  • Figs. 7A and 7B show sectional views illustrating an assembling of a rotor of a motor in accordance with a fourth embodiment of the present invention.
  • Fig. 8 shows a sectional view illustrating a structure of an electrical apparatus (washing machine) in accordance with a fifth embodiment of the present invention.
  • Fig. 9 shows a sectional view illustrating a structure of an electrical apparatus (dish washer) in accordance with the fifth embodiment of the present invention.
  • Fig. 1OA shows a sectional view illustrating a structure of a conventional motor.
  • Fig. 1OB shows an enlarged view illustrating an essential section of the conventional motor shown in Fig. 1OA.
  • Fig. HA shows a sectional view illustrating a structure of another conventional motor.
  • Fig. HB shows an enlarged view illustrating an essential section of the conventional motor shown in Fig. HA.
  • Figs. 12 and 13 schematically show a tooling die for manufacturing the conventional motor.
  • Embodiments of the present invention are demonstrated hereinafter with reference to the accompanying drawings.
  • Embodiment 1 Fig. 1 shows a sectional view illustrating a structure of a motor in accordance with the first embodiment of the present invention.
  • Fig. 2 shows an enlarged view of a rotor of the motor shown in Fig. 1.
  • Stator 11 is formed of stator iron-core 12 and winding 14 wound on iron-core 12 yet insulated by resin 13 from iron-core 12.
  • Rotor 21 is formed of rotor iron-core 22, and aluminum die cast is buried inside iron-core 22 for forming a conductive bar (not shown) as a secondary conductor.
  • Iron-core 22 has resin insulator 27 on its inside, and iron-core 22 is coupled to rotary shaft 23 via resin insulator 27.
  • Stator 11 includes bearing 15 which rotatably supports rotary shaft 23.
  • Winding 14 of stator 11 generates rotary magnetic field, which acts on the secondary conductor made of aluminum die cast inside rotor 21, thereby producing electromagnetic induction, which then gives specified torque to rotor 21 for rotating.
  • the foregoing motor is thus defined as an induction motor.
  • winding 14 is insulated from stator iron-core 12 by resin 13, namely, the motor is provided with basic insulation.
  • rotor iron-core 22 is insulated from rotary shaft 23 by resin insulator 27, so that double insulation is achieved.
  • Resin insulator 27 can be made of thermoplastic resin (PBT, PET, PP, PE), or thermosetting resin (unsaturated polyester resin). The thermosetting resin is preferable to the thermoplastic resin because it has better mechanical strength and a higher heatproof temperature.
  • Thickness "h” of resin insulator 27 shown in Fig. 2 is at least 0.4 mm, which complies with the safety standards such as Electrical Appliance Safety Law in Japan. And higher limit of the thickness "h” can be determined suitable for practical use.
  • an inner diameter of rotor iron-core 22 is ⁇ 10
  • rotary shaft 23 is a straight shaft having ⁇ 8. This structure keeps the cost of shaft 23 down, and the thickness "h" of resin insulator 27 becomes lmm.
  • Steps "j" are thus disposed at both the ends of the inside of iron-core 22.
  • resin insulator 27 is molded in the inside of the rotor, steps "j" can be eliminated for making the inside straight.
  • Figs. 3A and 3B show a method of manufacturing the foregoing rotor.
  • rotor iron-core 22 is held by upper die 41, lower die 42 and center core
  • a creeping distance between iron-core 22 and shaft 23 is a critical item from the viewpoint of safety.
  • the creeping distance is expressed by dimension 29 in Fig. 2.
  • Electrical Appliance Safety Law stipulates that a motor to be mounted to an apparatus driven by 200V needs at least 2mm creeping distance. And higher limit of the dimension 29 can be determined suitable for practical use.
  • Figs. 4A — 41 specifically illustrate how to find this creeping distance.
  • Resin insulator 27 either projects along the rotary shaft from an end face of rotor iron-core 22 or does not project. Resin insulator 27 is provided with a recess or a protrusion in the shaft direction for increasing the creeping distance.
  • Fig. 4A shows a case where resin insulator 27a projects along the rotary shaft from an end face of iron-core 22a, and the creeping distance is expressed with reference mark 29a.
  • Fig. 4B shows a case where resin insulator 27b projects along the rotary shaft from an end face of iron-core 22b, and on top of that, resin insulator 27b includes a protrusion, so that the creeping distance is expressed with 29b.
  • Fig. 4C shows a case where resin insulator 27c projects along the rotary shaft from an end face of iron-core 22c, and on top of that, resin insulator 27c includes a recess, so that the creeping distance is expressed with 29c.
  • Fig. 4A shows a case where resin insulator 27a projects along the rotary shaft from an end face of iron-core 22a, and the creeping distance is expressed with reference mark 29a.
  • Fig. 4B shows a case where resin insulator 27b projects along the rotary shaft from an end face
  • resin insulator 27d projects along the rotary shaft from an end face of iron-core 22d, and on top of that, resin insulator 27d includes protrusions and recesses, so that the creeping distance is expressed with 29d.
  • Fig. 4E shows a case where resin insulator 27e does not project along the rotary shaft from an end face of ironxore 22e, so that the creeping distance is expressed with 29e.
  • the step section needs a greater height in order to keep a necessary creeping distance.
  • Fig. 4F shows a case where resin insulator 27f does not project along the rotary shaft from an end face of iron-core 22f, and insulator 27f includes a protrusion, so that the creeping distance is expressed with 29f.
  • Fig. 4G shows a case where resin insulator 27g does not project along the rotary shaft from an end face of iron-core 22g, and insulator 27g includes a recess, so that the creeping distance is expressed with 29g.
  • Fig. 4H shows a case where resin insulator 27h does not project along the rotary shaft from an end face of iron-core 22h, and insulator 27h includes protrusions as well as recesses, so that the creeping distance is expressed with 29h.
  • Fig. 41 shows a case where resin insulator 27i does not project along the rotary shaft from an end face of iron-core 22i, so that the creeping distance is expressed with 29i. In this case, a chamfered section needs a greater dimension in order to keep a necessary creeping distance.
  • Fig. 5 shows a sectional view illustrating a step of assembling a rotor in accordance with the second embodiment.
  • Rotor iron-core 22 is provided with aluminum die cast at the inside, and resin insulator 27 is disposed further inside iron-core 22.
  • Rotary shaft 24 has knurled section 24a at a joint with insulator 27. Knurled section 24a is formed by pillar filing or double-cut filing.
  • Rotary shaft 24 is press-fitted into resin insulator 27, so that shaft 24 is tightly held by insulator 27. As a result, rotary shaft 24 is prevented from spinning loosely or slipping off.
  • FIGs. 6A and 6B individually illustrate a step of putting a rotor iron-core and a rotary shaft together in accordance with the third embodiment.
  • straight rotary shaft 23 and rotor iron-core 22 which is provided with aluminum die cast are set in a tooling die, then insulating resin is poured thereto, so that resin insulator 28a is formed.
  • rotary shaft 25 includes knurled section 25a which is formed by, e.g. pillar filing or double-cut filing.
  • Iron-core 22 provided with aluminum die cast and rotary shaft 25 are set in a tooling die, then insulating resin is poured thereto, so that resin insulator 28b is formed.
  • Rotor iron-core 22 is integrated to rotary shaft 23 or 25 with insulating resin, so that the iron-core is insulated from the rotary shaft and yet they are put together rigidly. On top of that, the step of press-fitting the rotary shaft into the resin insulator can be eliminated, although this step is needed in the first and the second embodiments.
  • Figs. 7A and 7B show sectional views of rotors in accordance with the fourth embodiment of the present invention. Those rotors are used in a synchronous induction motor, which is a special version of the motor. This motor is equipped with interior permanent magnets.
  • Fig. 7A shows a step of burying flat permanent magnets into plural slots
  • Fig. 7B shows a step of burying arc-shaped permanent magnets into plural slots 34 of rotor iron-core 33. Before or after the plural permanent magnets are buried in slots 34, resin insulator 27 is formed, so that the rotor iron-core is positively insulated from the rotary shaft.
  • the permanent magnets to be buried can be neodymiu ⁇ riron-boron magnets, or ferrite magnets (sintered or plastic magnet).
  • the rotary shaft can undergo the knurling process as discussed in the second embodiment for strengthening the adhesion of the shaft to the resin insulator.
  • the rotary shaft and the rotor iron-core can be integrally formed as discussed in the third embodiment for eliminating a step onward.
  • FIG. 8 shows a sectional view illustrating a structure of a washing machine employing a motor of the present invention.
  • wash and dryer basket 61 (hereinafter referred to as basket 61) is surrounded by water tub 63, and has pulsator (agitating wing) 62 at its bottom.
  • Water tub 63 is mounted with clutch 65 at its bottom.
  • Driving motor 64 is coupled to clutch 65 via a belt, so that rotating force of motor 64 is conveyed to basket 61 or pulsator 62 via clutch 65.
  • Clutch 65 is switched in order to convey the rotating force of motor 64 to pulsator 62 in washing, or to basket 61 in drying.
  • Water tub 63 is supported by outer frame 66 via suspension 67 so that vibration can be damped.
  • Liquid balancer 68 enclosing liquid is fixed to an upper section of basket 61.
  • Water tub 63 is covered with water guard 69 at its top and is equipped with discharging hose-pipe 71 at its bottom.
  • Hose-pipe 71 is equipped with pump motor 70 at its some midpoint. Pump motor 70 works in discharging so that drainage can be done smooth.
  • the water produced in the rinsing step and the spin-drying step is discharged through hose-pipe 71 by pump motor 70.
  • Fig. 9 shows a sectional view illustrating a structure of a dish washer employing a motor of the present invention.
  • washing unit 81 opens in front (left side in Fig. 9) and includes washing tub 82 therein.
  • Tub 82 opens upward and can be pulled out from washing unit 81 toward the front generally in the horizontal direction.
  • dish-basket 84 is disposed for accommodating tableware 83.
  • Tub 82 can be pulled out from the washing unit 81 to the front along rails provided between unit 81 and tub 82.
  • wash pump 86 sprays the wash water through nozzles 87 for washing tableware 83.
  • Wash pump 86 is driven by pump motor 80.
  • Water feed valve 88 feeds the running water to washing tub 82, and a discharge pump (not shown) discharges the wash water to the outside of tub 82.
  • Temperature sensor 89 is formed of a thermistor and mounted on a bottom face of tub 82 for sensing a temperature of the wash water in tub 82. Controller 90 receives a signal from sensor 89 for sensing the temperature of the wash water, and controls the temperature of the wash water as well as a temperature in the spin-drying step.
  • inner lid 91 is disposed inside washing unit 81 and yet rigidly mounted to unit 81, and covers the opening of tub 82 when tub 82 is housed in washing unit 81.
  • Seal-packing 92 is further disposed for sealing up the opening of tub 82.
  • Controller 90 controls the operations of heater 85, wash pump 86, water feed valve 88, and the discharge pump for the dish washer to wash, rinse, and dry tableware 83.
  • the wash water attaches to the inside face of lid 91, so that a pull of tub 82 toward the front drops the wash water attaching to lid 91 on the bottom face of washing unit 81, then the dropped water possibly splashes on pump motor 80, which thus needs to be waterproof.
  • the double insulation motor of the present invention as pump motor 80 is good for this application because of its excellent waterproof feature.
  • the motor also can provide a more positive grounding structure. As a resu.lt, the dish washer of the present invention becomes more reliable.
  • the motor of the present invention includes a stator having a stator iron-core and a winding insulated from the iron-core, and a rotor having a rotary shaft and a rotor iron-core.
  • the rotor iron-core is provided with resin insulator at its inside, and the rotor iron-core is coupled to the rotary shaft via the resin insulator.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

Moteur comprenant un stator ayant un noyau de fer de stator et un enroulement isolé du noyau de fer de stator, et un rotor ayant un arbre rotatif et un noyau de fer de rotor. Le noyau de fer de rotor est équipé d’un isolateur en résine à l’intérieur, et couplé à l’arbre rotatif par l’intermédiaire de l’isolateur en résine.
PCT/JP2005/022993 2004-12-15 2005-12-08 Moteur avec une structure a double isolation et appareil electrique utilisant le meme moteur WO2006064860A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2005800390302A CN101057383B (zh) 2004-12-15 2005-12-08 具双重绝缘构造的马达及搭载有该马达的电子装置
JP2007516706A JP2008519577A (ja) 2004-12-15 2005-12-08 二重絶縁構造を有するモータ及びそのモータを搭載した電気機器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004362631 2004-12-15
JP2004-362631 2004-12-15

Publications (1)

Publication Number Publication Date
WO2006064860A1 true WO2006064860A1 (fr) 2006-06-22

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PCT/JP2005/022993 WO2006064860A1 (fr) 2004-12-15 2005-12-08 Moteur avec une structure a double isolation et appareil electrique utilisant le meme moteur

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JP (1) JP2008519577A (fr)
CN (1) CN101057383B (fr)
TW (1) TWI382634B (fr)
WO (1) WO2006064860A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000599A1 (fr) * 2007-06-27 2008-12-31 Robert Bosch Gmbh Rotor pour un moteur électrique et machine-outil électrique avec un moteur électrique et un rotor
US8581466B2 (en) 2010-08-27 2013-11-12 Hamilton Sundstrand Corporation Knurled multiple conductor windings
EP3179609A1 (fr) * 2015-12-11 2017-06-14 Whirlpool Corporation Rotor à composants multiples pour moteur électrique d'un appareil
US9698648B2 (en) 2012-06-14 2017-07-04 Panasonic Intellectual Property Management Co., Ltd. Motor
US9782054B2 (en) 2015-01-13 2017-10-10 Haier Us Appliance Solutions, Inc. Pump assemblies and fluid circulation systems for dishwasher appliances
WO2018036760A1 (fr) * 2016-08-25 2018-03-01 Continental Automotive Gmbh Rotor en court-circuit pour une machine asynchrone
WO2018041504A1 (fr) * 2016-09-02 2018-03-08 Continental Automotive Gmbh Rotor pour machine électrique
DE102017115229A1 (de) * 2017-07-07 2019-01-10 Thyssenkrupp Ag Verfahren zur Herstellung eines Rotors für einen Elektromotor und mit diesem Verfahren hergestellter Rotor
US10693336B2 (en) 2017-06-02 2020-06-23 Whirlpool Corporation Winding configuration electric motor
US10704180B2 (en) 2016-09-22 2020-07-07 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance
US12031260B2 (en) 2022-09-09 2024-07-09 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance

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KR101224700B1 (ko) * 2009-10-09 2013-01-21 도요타지도샤가부시키가이샤 로터 및 그 제조 방법
EP2597189A1 (fr) * 2010-07-21 2013-05-29 Panasonic Corporation Moteur sans balais destiné à un lave-linge et lave-linge à tambour équipé de ce dernier
JP2012065499A (ja) * 2010-09-17 2012-03-29 Nissan Motor Co Ltd 車両用モータ
CN102290888A (zh) * 2011-08-03 2011-12-21 戴绍国 四极直流永磁电机的电枢转子铁芯及其制备工艺
CN104412490B (zh) * 2012-06-18 2017-02-22 松下知识产权经营株式会社 电动机
CN103001430A (zh) * 2012-10-29 2013-03-27 无锡金阳电机有限公司 单相电机
CN104467215B (zh) * 2014-11-19 2017-08-29 佛山市威灵洗涤电机制造有限公司 电机
CN105827042B (zh) * 2015-01-05 2018-12-04 江苏汇创机电科技股份有限公司 鼠笼式转子与电机轴的固定方法及结构
JP7101584B2 (ja) * 2018-10-05 2022-07-15 株式会社マキタ 電動園芸工具

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WO2009000599A1 (fr) * 2007-06-27 2008-12-31 Robert Bosch Gmbh Rotor pour un moteur électrique et machine-outil électrique avec un moteur électrique et un rotor
US8581466B2 (en) 2010-08-27 2013-11-12 Hamilton Sundstrand Corporation Knurled multiple conductor windings
US9698648B2 (en) 2012-06-14 2017-07-04 Panasonic Intellectual Property Management Co., Ltd. Motor
US9782054B2 (en) 2015-01-13 2017-10-10 Haier Us Appliance Solutions, Inc. Pump assemblies and fluid circulation systems for dishwasher appliances
US10897167B2 (en) 2015-12-11 2021-01-19 Whirlpool Corporation Multi-component rotor for an electric motor of an appliance
EP3179609A1 (fr) * 2015-12-11 2017-06-14 Whirlpool Corporation Rotor à composants multiples pour moteur électrique d'un appareil
US11909265B2 (en) 2015-12-11 2024-02-20 Whirlpool Corporation Multi-component rotor for an electric motor of an appliance
US11641138B2 (en) 2015-12-11 2023-05-02 Whirlpool Corporation Multi-component rotor for an electric motor of an appliance
US11374448B2 (en) 2015-12-11 2022-06-28 Whirlpool Corporation Multi-component rotor for an electric motor of an appliance
US10326323B2 (en) 2015-12-11 2019-06-18 Whirlpool Corporation Multi-component rotor for an electric motor of an appliance
WO2018036760A1 (fr) * 2016-08-25 2018-03-01 Continental Automotive Gmbh Rotor en court-circuit pour une machine asynchrone
US11114924B2 (en) 2016-08-25 2021-09-07 Vitesco Technologies GmbH Squirrel-cage rotor for an asynchronous machine
US11303174B2 (en) 2016-09-02 2022-04-12 Vitesco Technologies GmbH Rotor for an electric machine
WO2018041504A1 (fr) * 2016-09-02 2018-03-08 Continental Automotive Gmbh Rotor pour machine électrique
US10704180B2 (en) 2016-09-22 2020-07-07 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance
US11473231B2 (en) 2016-09-22 2022-10-18 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance
US10693336B2 (en) 2017-06-02 2020-06-23 Whirlpool Corporation Winding configuration electric motor
US11482901B2 (en) 2017-06-02 2022-10-25 Whirlpool Corporation Winding configuration electric motor
DE102017115229B4 (de) * 2017-07-07 2019-11-28 Thyssenkrupp Ag Verfahren zur Herstellung eines Rotors für einen Elektromotor und mit diesem Verfahren hergestellter Rotor
WO2019008068A1 (fr) * 2017-07-07 2019-01-10 Thyssenkrupp Ag Procédé de réalisation d'un rotor destiné à un moteur électrique et rotor produit grâce à ce procédé
DE102017115229A1 (de) * 2017-07-07 2019-01-10 Thyssenkrupp Ag Verfahren zur Herstellung eines Rotors für einen Elektromotor und mit diesem Verfahren hergestellter Rotor
US12031260B2 (en) 2022-09-09 2024-07-09 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance

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TW200629691A (en) 2006-08-16
JP2008519577A (ja) 2008-06-05
CN101057383B (zh) 2010-09-29
CN101057383A (zh) 2007-10-17
TWI382634B (zh) 2013-01-11

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