US20130139557A1 - Washing Machine Drive System - Google Patents

Washing Machine Drive System Download PDF

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Publication number
US20130139557A1
US20130139557A1 US13/817,167 US201213817167A US2013139557A1 US 20130139557 A1 US20130139557 A1 US 20130139557A1 US 201213817167 A US201213817167 A US 201213817167A US 2013139557 A1 US2013139557 A1 US 2013139557A1
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US
United States
Prior art keywords
sleeve
brake
shaft
clutch
spring holder
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.)
Abandoned
Application number
US13/817,167
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English (en)
Inventor
Chang Chen
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.)
CHANGZHQU MASTER MACHINERY Co Ltd
Original Assignee
CHANGZHQU MASTER MACHINERY 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 CHANGZHQU MASTER MACHINERY Co Ltd filed Critical CHANGZHQU MASTER MACHINERY Co Ltd
Assigned to CHANGZHQU MASTER MACHINERY CO., LTD reassignment CHANGZHQU MASTER MACHINERY CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, CHANG
Publication of US20130139557A1 publication Critical patent/US20130139557A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F13/00—Washing machines having receptacles, stationary for washing purposes, with agitators therein contacting the articles being washed 
    • D06F13/02—Washing machines having receptacles, stationary for washing purposes, with agitators therein contacting the articles being washed  wherein the agitator has an oscillatory rotary motion only
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively

Definitions

  • the present invention generally relates to drive mechanisms for washing machine and, more particularly, to top-loading washer drive systems.
  • a top-loading washer usually has a washing cycle and a spin cycle.
  • the agitator rotates back and forth to achieve washing operation; while during the spin cycle, both the agitator and the basket rotate at a high speed to spin water out of the washing items.
  • the agitator's back and forth rotation operation is realized by changing the rotating directions of a drive motor controlled by a controller.
  • such operation may require frequent starting and back-and-forth rotating of the drive motor, which generally leads to a much shorter serving life for the drive motor.
  • the structure of the drive mechanism can be complex and often need coordination between clutch and brake modules.
  • the clutch often includes a ratchet wheel, a pawl and a clutch lever, and the braking module is usually provided separately. This may result in a bulky and complex structure that may be inconvenient for installation and maintenance.
  • the brake module is provided separately, it may be easy to cause coordinating issues between braking and driving operations. Sometimes the braking operation and the driving operation are performed at the same time or the braking operation is performed after the driving operation stops for a while, which may be undesired during operation.
  • the present invention provides a top-loading washer drive system with simple structures and reliable performances.
  • the technical solution of the present invention provides a top-loading washer drive system which includes a mounting plate connecting to the body of the washer, a driving pulley, a main shaft assembly fastened to the washer agitator, a sleeve shaft assembly fastened to the washer basket, a clutch, and a brake module.
  • the lower part of main shaft assembly is connecting to the driving pulley.
  • the sleeve shaft assembly and main shaft assembly are coaxially arranged and can rotate with respect to each other.
  • the lower end of the sleeve shaft assembly is connected with the driving pulley through the clutch.
  • the main shaft assembly includes an input shaft at one end and an output shaft at the other end.
  • a planetary gear module and an oscillating drive output module are configured between the input shaft and the output shaft.
  • the braking module includes a cone-shaped brake unit and a braking control unit.
  • the cone-shaped brake unit includes a cone flange fastened to the mounting plate, a brake pad lining at the inner wall of the cone flange, and a cone-shaped brake disk matching the shape of inner wall of the cone flange.
  • the brake disk is fitted to slide along the sleeve shaft and at least two brake springs are coupled to the lower part of the brake disk.
  • the lower ends of the brake springs are coupled to a brake spring holding assembly.
  • the brake disk engages the brake pad under the effect of the brake springs.
  • the brake spring holder assembly is rotated along the sleeve shaft.
  • the brake spring holder assembly includes a brake spring holder cover and a brake spring holder.
  • the brake spring holder cover and the brake spring holder are coaxially arranged and rotate with respect to each other.
  • the brake spring holder cover is fastened to the lower ends of the braking springs.
  • the brake spring holder is provided with two clutch slots and two nut slots.
  • the two clutch slots are positioned in opposite and the two nut slots are also positioned in opposite.
  • the clutch slots and the nut slots are arranged alternately with each other.
  • the clutch slots are rectangular slots.
  • the nut slots are fan-shaped slots and may have a corresponding arch angle ⁇ between approximately 90 to 150 degrees.
  • the brake spring holder cover is in a ring shape and the inner radius of brake spring holder cover matches the largest opening in brake spring holder.
  • the outer edge of the brake spring holder cover extends downwards and is coaxially placed with respect to the outer cylindrical surface of brake spring holder.
  • the brake spring holder cover and the brake spring holder are coaxially arranged and rotate with respect to each other, which is realized by placing a plurality of steel balls between the brake spring holder cover and the brake spring holder.
  • a steel ball holder is placed between the brake spring holder cover and the brake spring holder.
  • the steel ball holder is in a ring shape and a plurality of holes is evenly spaced out around the ring shape. Each through-hole holds a corresponding steel ball.
  • the braking control unit a ball-screw set including a nut sleeve, a screw sleeve and a plurality of bearing balls.
  • the nut sleeve is fastened to the braking disk and is positioned above the brake spring holder. It is fitted to slide along the sleeve shaft.
  • the nut sleeve includes two inserting teeth positioned in opposite at the lower end of the nut sleeve. When the nut sleeve slides down, the two inserting teeth fit into the two nut slots of the brake spring holder, and may rotate a certain distance in the nut slots.
  • the screw sleeve is in a cylindrical ring shape and rotationally mounted around and coaxially arranged with a sleeve shaft assembly.
  • the lower end of the screw sleeve is coupled to the clutch.
  • the plurality of bearing balls are provided between the screw sleeve and the nut sleeve.
  • a bearing ball holder is placed between the nut sleeve and the screw sleeve.
  • the bearing ball holder has a plurality of position-restriction holes to accommodate respective bearing balls.
  • the bearing ball holder has a total of 3 to 12 position-restriction holes helically distributed within a circle of the thread.
  • the nut sleeve is fastened to the braking disk through a ring gear of nut sleeve.
  • the sleeve shaft assembly has outer gears matching the ring gear of nut sleeve.
  • the described clutch is a clutch with helical spring wound with square-cross-section wire. It includes a coupler, a clutch sleeve, and a clutch square-wire spring.
  • the coupler and the clutch sleeve are concentric and have a same outer diameter that matches with the inner diameter of the square-wire spring.
  • the coupler and the clutch sleeve are also coaxially and parallel arranged with respect to each other.
  • the clutch sleeve may have clutch inserting teeth at the upper end of the clutch sleeve. The clutch inserting teeth may be inserted into the corresponding clutch slot of the brake spring holder.
  • the coupler is fastened to the pulley.
  • the bearing ball holder has a total of 4 position-restriction holes, helically distributed within a circle of the thread.
  • the planetary gear module includes a gear box cover, a gear box casing, a planetary ring gear mounted on the gear box casing.
  • a planet gear holder positioned inside the planetary ring gear, and at least two planet gears are configured inside the planet gear holder.
  • the planet gears are rotationally coupled to the oscillating drive output module.
  • the lower end of the input shaft is securely fastened to the pulley, and the upper end of the input shaft is coupled to the planet gear holder via a spline.
  • the sleeve shaft assembly includes an input sleeve shaft and an output sleeve shaft. The upper end of the input sleeve shaft is fastened to the gear box casing; and the lower end of the output sleeve shaft is fastened to the gear box cover.
  • the oscillating drive output module includes an eccentric shaft, an eccentric shaft limit ring, a slider, a rack gear, and an output pinion gear.
  • the rack gear is generally a frame of a rectangular shape, a plurality of rack teeth is provided at an inner side of the frame of the rack gear, and a left-right oriented sliding track is located at the lower part of the frame.
  • the rack gear can move back and forth with the gear box and located on top of the planet gears.
  • the slider is in a rectangular shape, with a through hole at the middle, and the slider can slide left and right along the sliding tracks under the rack gear.
  • the eccentric shaft is configured to have a plurality of connection holes corresponding to the multiple planet gears and a shaft matched with the through hole of the slider, and the connection holes are rotationally coupled with the planet gears, and the shaft is rotationally coupled with the through hole of the slider.
  • the eccentric shaft limit ring limits the position of the eccentric shaft.
  • the output gear is a sector pinion gear meshing with the rack gear. The top end of output gear is also coupled to output shaft via the spline.
  • the input sleeve shaft is concentrically arranged with the input shaft and is rotationally mounted around the input shaft.
  • the output sleeve shaft is also concentrically arranged with the output shaft and is rotationally mounted around the output shaft.
  • Ball bearings are provided on the upper end and the lower end of the input shaft, and on the upper end and the lower end of the output shaft.
  • the ball bearings are oil bearings.
  • seals are provided at the lower end of the input shaft and the upper end of the output shaft.
  • the present invention includes the features such as the square-wire spring clutch, the cone-shaped brake, the planetary gear with a rack gear, and the sector shaped output gear outputting positive and negative torque, which has simple structures, reliable driving power transmission, precise braking, less space required, easy installation and maintenance, and a longer service life, exhibiting a higher level of novelty and creativity.
  • FIG. 1 illustrates a structural cross-section view according to the present invention
  • FIG. 2 illustrates an exploded view according to the present invention
  • FIG. 3 illustrates an elevation view of an exemplary clutch and brake module according to the present invention
  • FIG. 4 illustrates an exploded view of a brake spring holder assembly according to the present invention
  • FIG. 5 illustrates an exemplary brake spring holder according to the present invention
  • FIG. 6 illustrates an exemplary braking control unit according to the present invention
  • FIG. 7 illustrates certain surface of an exemplary sleeve shaft according to the present invention
  • FIG. 8 illustrates an exploded view of an exemplary clutch according to the present invention
  • FIG. 9 illustrates an exemplary planetary gear module and oscillating drive output module according to the present invention.
  • FIG. 10 illustrates certain parts of the planetary gear module according to the present invention
  • FIG. 11 illustrates an exploded view of the exemplary oscillating drive output module according to the present invention.
  • the present invention includes a mounting plate 100 connecting to the body of the washer, a driving pulley 200 , a main shaft assembly 300 , a sleeve shaft assembly 400 , a clutch 500 , and a brake module 600 .
  • the lower part of main shaft assembly 300 is connecting to the driving pulley 200 .
  • the sleeve shaft assembly 400 and main shaft assembly 300 are coaxially arranged and can rotate with respect to each other.
  • the lower end of the sleeve shaft assembly 400 is connected with driving pulley 200 through the clutch 500 .
  • the main shaft assembly 300 includes an input shaft 301 and an output shaft 302 .
  • a planetary gear module 330 and an oscillating drive output module 340 are configured between the input shaft 301 and the output shaft 302 .
  • the braking module 600 includes a cone-shaped brake unit 610 and a braking control unit 620 .
  • the brake unit 610 includes a cone flange 611 fastened to the mounting plate 100 , a brake pad 612 lining at the inner wall of the cone flange 611 , and a cone-shaped brake disk 613 matching the shape of inner wall of the cone flange 611 .
  • the brake disk 613 is fitted to slide along the sleeve shaft 400 and eight brake springs 614 are coupled to the lower end of the brake disk 613 .
  • the lower ends of the brake springs 614 are coupled to a brake spring holding assembly 615 .
  • the brake disk 613 engages the brake pad 612 under the effect of the brake springs 614 , and the brake spring holder assembly 615 is rotationally configured along the sleeve shaft 400 .
  • the brake spring holder assembly ( 615 ) includes a brake spring holder cover 615 a and a brake spring holder 615 b .
  • the brake spring holder cover 615 a and the brake spring holder 615 b are coaxially arranged and can rotate with respect to each other.
  • the brake spring holder cover 615 a is fastened to the lower ends of the braking springs 614 .
  • the brake spring holder cover 615 a is in a ring shape and the inner radius of brake spring holder cover 615 a matches the largest opening (e.g., the slot) in brake spring holder 615 b .
  • the outer edge 615 a - 1 of the brake spring holder cover 615 a extends downwards and is concentrically placed with respect to the outer cylindrical surface of brake spring holder 615 b .
  • a plurality of steel balls 615 c are placed between the brake spring holder cover 615 a and the brake spring holder 615 b and are held together by steel ball holder 615 d .
  • the steel ball holder 615 d is in a ring shape, with a plurality of through holes 615 d - 1 evenly spaced out around the ring shape. Each through-hole 615 d - 1 holds a corresponding steel ball 615 c.
  • the brake spring holder 615 b is provided with two clutch slots 615 b - 1 and two nut slots 615 b - 2 .
  • the two clutch slots 615 b - 1 are positioned in opposite; the two nut slots 615 b - 2 are also positioned in opposite; and the clutch slots 615 b - 1 and the nut slots 615 b - 2 are arranged alternately with each other.
  • the clutch slots 615 b - 1 are rectangular slots, and the nut slots 615 b - 2 are fan-shaped or sector-shaped slots and have a corresponding arch angle ⁇ between approximately 90 to 150 degrees.
  • the braking control unit 620 includes a nut sleeve 621 , a screw sleeve 622 , and a plurality of bearing ball 623 .
  • the nut sleeve 621 is fastened to the braking disk 613 and is positioned above the brake spring holder 615 b . It is fitted to slide along the sleeve shaft 400 .
  • the nut sleeve 621 also includes inserting teeth 621 - 1 positioned at the lower end of the nut sleeve 621 .
  • the inserting teeth 621 - 1 can fit into the corresponding nut slots 615 b - 2 of the brake spring holder 615 b and can rotate a certain distance in the nut slots 615 b - 2 .
  • the screw sleeve 622 is in a cylindrical ring shape and rotationally mounted around and coaxially arranged with a sleeve shaft assembly 400 .
  • the lower end of the screw sleeve 622 is coupled to the clutch 500 .
  • a plurality of bearing balls 623 are provided between the screw sleeve 622 and the nut sleeve 621 .
  • the bearing ball holder 624 is placed between the nut sleeve 621 and the screw sleeve 622 .
  • the bearing ball holder 624 has a plurality of position-restriction holes to accommodate respective bearing balls 623 .
  • the bearing ball holder 624 has a total of 3 to 12 holes helically distributed within a circle of the thread.
  • the nut sleeve 621 is fastened to the braking disk ( 613 ) through a ring gear of nut sleeve 616 .
  • the ring gear of nut sleeve 616 on the surface of sleeve shaft assembly 400 is configured to have outer gears 403 matching the ring gear of nut sleeve 616 .
  • the clutch 500 is a clutch with helical spring wound with square-cross-section wire, and it includes a coupler 501 , a clutch sleeve 502 , and a clutch square-wire spring 503 .
  • the coupler 501 and the clutch sleeve 502 are concentric and have a same outer diameter that matches with the inner diameter of the clutch spring 503 .
  • the coupler 501 and the clutch sleeve 502 are also coaxially and parallel arranged with respect to each other.
  • the clutch sleeve 502 is configured above the coupler 501 and below the brake spring holder 615 b and coupled to the screw sleeve 622 .
  • the clutch sleeve 502 has clutch inserting teeth 502 - 1 at the upper end of the clutch sleeve 502 .
  • the clutch inserting teeth 502 - 1 may be inserted into the corresponding clutch slots 615 b - 1 of the brake spring holder 615 b to fix position.
  • the coupler 501 is fastened to the pulley 200 .
  • the planetary gear module 330 includes a gear box cover 331 , a gear box casing 332 , a planetary ring gear 333 mounted on the gear box casing 332 , a planet gear holder 334 positioned inside the planetary ring gear 333 , and at least two planet gears 335 inside the planet gear holder 334 .
  • the planet gears 335 are rotationally coupled to the oscillating drive output module 340 .
  • the lower end of the input shaft 301 is securely fastened to the pulley 200 , and the upper end of the input shaft 301 is coupled to the planet gear holder 334 by a spline.
  • the sleeve shaft assembly 400 includes an input sleeve shaft 401 and an output sleeve shaft 402 .
  • the upper end of the input sleeve shaft 401 is fastened to the gear box casing 332
  • the lower end of the output sleeve shaft 402 is fastened to the gear box cover 331 .
  • the input sleeve shaft 401 is concentrically arranged with the input shaft 301 and is rotationally mounted around the input shaft 301 .
  • the output sleeve shaft 402 is also concentrically arranged with the output shaft 302 and is rotationally mounted around the output shaft 302 .
  • the ball bearings 701 are provided on the upper end and the lower end of the input shaft 301 , and on the upper end and the lower end of the output shaft 302 ; the ball bearings 701 are all oil bearing. Seals 702 are provided at the lower end of the input shaft 301 and the upper end of the output shaft 302 .
  • the oscillating drive output module 340 includes an eccentric shaft 341 , an eccentric shaft limit ring 342 , a slider 343 , a rack gear 344 , and an output pinion gear 345 .
  • the rack gear 344 is generally a frame of a rectangular shape, and a plurality of rack teeth 344 - 1 is provided at an inner side of the frame of the rack gear 344 .
  • the slider 343 is in a rectangular shape, with a through-hole 343 - 1 at the middle, and the slider 343 can slide left and right along the sliding tracks 344 - 2 under the rack gear 344 .
  • the eccentric shaft 341 is configured to have a plurality of connection holes 341 - 1 corresponding to the multiple planet gears 335 and a shaft 341 - 2 matched with connection holes 341 - 1 on top of the eccentric shaft 341 .
  • the connection holes 341 - 1 are coupled with respective gear shafts of the planet gears 335
  • shaft 341 - 2 is coupled with the through hole 343 - 1 of the slider 343 .
  • the eccentric shaft limit ring 342 limits the position of the eccentric shaft 341 .
  • the output gear 345 is a sector pinion gear meshing with the rack gear 344 and the top end of output gear 345 is also coupled to output shaft 302 via a spline.
  • the rotation unwinds the clutch square-wire spring 503 and the driving pulley 200 only drives the input shaft 301 to rotate in the same clock-wise rotation.
  • the input shaft 301 then transmits the driving force to the planetary gear module 330 and the oscillating drive output module 340 , which causes the agitator rotating back and forth to complete the washing cycle. Because the sleeve shaft assembly 400 is not rotating under the control of the brake module 600 , the basket of washer 10 remains still.
  • the clutch spring 503 of the clutch 500 may wrap tightly and cause the brake control unit 620 to move downward so that the brake disk 613 is pulled down and disengages with the brake pad 612 .
  • the inserting teeth 621 - 1 of the screw sleeve 621 are inserted into the corresponding nut slots 615 b - 2 at the brake spring holder 615 b , and rotate for a certain distance to avoid the shear stress of the brake springs 614 and to ensure that the brake disk 613 disengages with the brake pad 612 .
  • the driving pulley 200 drives both the input shaft 301 and the input sleeve shaft 401 to rotate at the same speed.
  • the input sleeve shaft 401 drives the gear box casing 332 and the gear box cover 331 of the planetary gear module 330 , and then drives the output shaft 302 and the output sleeve shaft 402 to rotate at the same high speed to complete the spin cycle.
  • the driving power for the driving pulley 200 stops, the clutch spring 503 is no longer in the wrap-around state.
  • the brake control unit 620 automatically resumes its original positions, the brake disk 613 moves upward and resumes the braking position.
  • the sleeve shaft 400 and the basket will come to a rapid stop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Retarders (AREA)
US13/817,167 2011-01-30 2012-01-06 Washing Machine Drive System Abandoned US20130139557A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201110033697.9 2011-01-30
CN201110033697.9A CN102619070B (zh) 2011-01-30 2011-01-30 一种搅拌式洗衣机传动总成
PCT/CN2012/000024 WO2012100638A1 (zh) 2011-01-30 2012-01-06 一种搅拌式洗衣机传动总成

Publications (1)

Publication Number Publication Date
US20130139557A1 true US20130139557A1 (en) 2013-06-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US13/817,167 Abandoned US20130139557A1 (en) 2011-01-30 2012-01-06 Washing Machine Drive System

Country Status (3)

Country Link
US (1) US20130139557A1 (zh)
CN (1) CN102619070B (zh)
WO (1) WO2012100638A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10107380B2 (en) 2015-06-15 2018-10-23 Regal Beloit America, Inc. Drive assembly, cover and associated kit
CN108866948A (zh) * 2018-05-29 2018-11-23 无锡小天鹅股份有限公司 用于滚筒洗衣机的制动器以及滚筒洗衣机
US10364524B2 (en) * 2016-04-08 2019-07-30 Whirlpool Corporation Laundry treating appliance with helical clutch
KR102065597B1 (ko) * 2018-07-26 2020-01-13 엘지전자 주식회사 세탁기
US11332872B2 (en) * 2015-12-01 2022-05-17 Qingdao Haier Washing Machine Co., Ltd Drum washing machine

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CN104631047B (zh) * 2013-11-14 2018-08-07 青岛海尔洗衣机有限公司 一种洗衣机减速离合器及洗衣机
CN104790176B (zh) * 2014-01-22 2018-10-12 青岛海尔洗衣机有限公司 洗衣机减速离合器及洗衣机
CN105734900B (zh) * 2014-12-12 2023-09-15 青岛海尔洗衣机有限公司 一种洗衣机减速离合器及洗衣机
CN105072732B (zh) * 2015-08-12 2017-01-11 广东美的厨房电器制造有限公司 搅拌组件和微波炉
CN106637826B (zh) * 2015-10-29 2024-04-19 宁国聚隆减速器有限公司 一种洗衣机减速离合驱动装置
CN105839351B (zh) * 2016-05-23 2017-11-21 奇精机械股份有限公司 一种洗衣机离合器
CN108866947B (zh) * 2018-05-29 2023-08-22 无锡小天鹅电器有限公司 用于滚筒洗衣机的制动器以及滚筒洗衣机
CN111197241B (zh) * 2018-10-31 2022-06-07 无锡小天鹅电器有限公司 用于滚筒洗衣机的制动器以及滚筒洗衣机
CN111570252B (zh) * 2020-05-21 2021-11-16 安徽省太和县天宇筛网有限公司 一种多层筛网结构

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10107380B2 (en) 2015-06-15 2018-10-23 Regal Beloit America, Inc. Drive assembly, cover and associated kit
US11332872B2 (en) * 2015-12-01 2022-05-17 Qingdao Haier Washing Machine Co., Ltd Drum washing machine
US10364524B2 (en) * 2016-04-08 2019-07-30 Whirlpool Corporation Laundry treating appliance with helical clutch
CN108866948A (zh) * 2018-05-29 2018-11-23 无锡小天鹅股份有限公司 用于滚筒洗衣机的制动器以及滚筒洗衣机
KR102065597B1 (ko) * 2018-07-26 2020-01-13 엘지전자 주식회사 세탁기
US11085141B2 (en) 2018-07-26 2021-08-10 Lg Electronics Inc. Washing machine
US11746459B2 (en) 2018-07-26 2023-09-05 Lg Electronics Inc. Washing machine

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CN102619070B (zh) 2016-02-03
WO2012100638A1 (zh) 2012-08-02
CN102619070A (zh) 2012-08-01

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