US20130014546A1 - Drum-type washing machine - Google Patents

Drum-type washing machine Download PDF

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Publication number
US20130014546A1
US20130014546A1 US13/637,922 US201213637922A US2013014546A1 US 20130014546 A1 US20130014546 A1 US 20130014546A1 US 201213637922 A US201213637922 A US 201213637922A US 2013014546 A1 US2013014546 A1 US 2013014546A1
Authority
US
United States
Prior art keywords
outer case
water tank
door
drum
side plates
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
US13/637,922
Other languages
English (en)
Inventor
Shinichiro Kobayashi
Yutaka Inoue
Masahiro Itami
Hideaki Ushijima
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.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Assigned to PANASONIC CORPORATION reassignment PANASONIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITAMI, MASAHIRO, INOUE, YUTAKA, KOBAYASHI, SHINICHIRO, Ushijima, Hideaki
Publication of US20130014546A1 publication Critical patent/US20130014546A1/en
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PANASONIC CORPORATION
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY FILED APPLICATION NUMBERS 13/384239, 13/498734, 14/116681 AND 14/301144 PREVIOUSLY RECORDED ON REEL 034194 FRAME 0143. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: PANASONIC CORPORATION
Abandoned legal-status Critical Current

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12Casings; Tubs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4209Insulation arrangements, e.g. for sound damping or heat insulation
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/001Arrangements for transporting, moving, or setting washing machines; Protective arrangements for use during transport

Definitions

  • the present invention relates to a configuration of a side surface of an outer case of a drum-type washing machine.
  • FIG. 4 is a perspective view of an outer appearance of a conventional drum-type washing machine described in Patent Literature 1.
  • an outer case 41 of the drum-type washing machine is a substantially rectangular parallelepiped which is vertically elongated.
  • the outer case 41 includes an upper surface decorative cover 30 defining an upper surface of the outer case 41 , an operation panel 31 provided with a display screen and the like, the operation panel 31 defining a front surface upper part of the outer case 41 , a front surface decorative cover 33 provided with an openable and closable door 32 in a center, the front surface decorative cover 33 defining a front surface center part of the outer case 41 , a front surface lower part cover 34 defining a front surface lower part of the outer case 41 , and a leg base 35 provided with a leg portion 39 attached on the lower side, the leg base 35 defining a bottom surface of the outer case 41 .
  • Side plates 36 defining left and right surfaces of the outer case 41 are made of thin steel plates and have substantially rectangular shapes which are vertically elongated. The side plates 36 support the entire weight of the outer case 41 together with the leg base 35 .
  • grip portions 38 for carrying the drum-type washing machine and a concave portion 40 to which a caution seal or the like is attached are formed on the side plate 36 .
  • a plurality of concave portions 37 whose longitudinal directions are the horizontal direction are formed on the entire surface of the side plate 36 excluding the grip portions 38 and the concave portion 40 .
  • an area of the concave portions 37 that is, an area of a plastically deformed part is larger than an area of a part where no concave portion 37 are formed.
  • surface rigidity of the entire side plate 36 is improved.
  • a resonance frequency of the side plate 36 is increased so as to come away from a vibration frequency at the time of spin-drying.
  • vibration of the outer case 41 is reduced.
  • the concave portions 37 are formed so as to extend in the horizontal direction over the entire surface of the side plate 36 . This is because the side plate 36 has a substantially rectangular shape which is vertically elongated, and a large number of concave portions 37 can be formed if size P set as vertical width of the concave portions 37 is fixed. By such arrangement, a large number of concave portions 37 are formed, so that the surface rigidity is improved.
  • a drum-type washing machine Since a drum-type washing machine has a large water-saving effect, a demand of the drum-type washing machine is increased in recent years.
  • the drum-type washing machine is required to have an increased capacity.
  • a rotary drum 11 In order to increase the capacity, a rotary drum 11 is formed so as to be elongated along an axis of rotation of the rotary drum 11 (i.e., formed in such a manner that depth of the rotary drum 11 is large). In such a way, depth of the product itself is increased in accordance with an increase in washable capacity of clothing.
  • a rectangular shape in which size in the vertical direction and the lateral direction are close to each other, that is, a rectangular shape close to a regular square is increased in recent years as a shape of a side plate 8 .
  • the present invention is to solve the above conventional problems, and an object thereof is to provide a drum-type washing machine for reducing generation of vibration and an abnormal sound by having high rigidity not only in the up and down direction but also in the front and rear direction.
  • a drum-type washing machine of the present invention includes left and right side plates formed of steel plates, the side plates defining side surfaces of an outer case, a front cover provided with an openable and closable door, the front cover defining a front surface of the outer case, an upper cover defining an upper surface of the outer case, a water tank oscillatably arranged in the outer case, and a rotary drum axially supported in the water tank, wherein a plurality of concave portions are formed on the left and right side plates, and the concave portion closer to the front surface of the outer case as a door side has an arc shape with a larger curvature.
  • drum-type washing machine of the present invention With the drum-type washing machine of the present invention, high rigidity both in the up and down direction and in the front and rear direction is obtained, so that the generation of the vibration and the abnormal sound is reduced.
  • FIG. 1 is a perspective view of an outer appearance of a drum-type washing machine in an embodiment of the present invention
  • FIG. 2 is a vertically sectional view of the same drum-type washing machine along the line A-A of FIG. 1 ;
  • FIG. 3 is a plan view of the same drum-type washing machine when seen from the side;
  • FIG. 4 is a perspective view of an outer appearance of a conventional drum-type washing machine.
  • a drum-type washing machine of the present invention includes left and right side plates formed of steel plates, the side plates defining side surfaces of an outer case, a front cover provided with an openable and closable door, the front cover defining a front surface of the outer case, an upper cover defining an upper surface of the outer case, a water tank oscillatably arranged in the outer case, and a rotary drum axially supported in the water tank, wherein a plurality of concave portions are formed on the left and right side plates, and the concave portion closer to the front surface of the outer case as a door side has an arc shape with a larger curvature.
  • the concave portion arranged in a closest position to the front surface of the outer case as the door side has a substantially semicircular shape.
  • the drum-type washing machine of the first or second aspect of the invention further includes a suspension hanging down the water tank in the outer case, a damper for damping vibration of the water tank, and a door packing arranged between the water tank and the front cover on the door side, wherein the water tank is supported by the suspension, the damper, and the door packing.
  • FIG. 1 is a perspective view of an outer appearance of a drum-type washing machine in the embodiment of the present invention.
  • FIG. 2 is a vertically sectional view of the same drum-type washing machine along the line A-A of FIG. 1 .
  • FIG. 3 is a plan view of the same drum-type washing machine when seen from the side.
  • an outer case 1 is a substantially rectangular parallelepiped which is close to a cube.
  • the outer case 1 is provided with an upper surface decorative cover (upper cover) 2 defining an upper surface of the outer case 1 , an operation panel 3 provided with a display screen and the like, the operation panel 3 defining a front surface upper part of the outer case 1 , a front surface decorative cover (front cover) 5 provided with an openable and closable door 4 substantially in a center, the front cover 5 defining a front surface of the outer case 1 , a front surface lower part cover 6 defining a front surface lower part of the outer case 1 , and a leg portion 7 attached to a bottom surface of the outer case 1 .
  • the outer case 1 is further provided with left and right side plates 8 formed of thin steel plates and defining side surfaces of the outer case 1 .
  • the side plates 8 have substantially rectangular shapes which are close to a regular square. It should be noted that FIG. 1 only shows one of the side plates 8 .
  • the direction perpendicular to the front surface decorative cover 5 is defined as the “front and rear direction” (X direction shown in FIG. 1 )
  • the direction perpendicular to the side plates 8 is defined as the “left and right direction” (Y direction shown in FIG. 1 )
  • the direction perpendicular to the upper surface decorative cover 2 is defined as the “up and down direction” (Z direction shown in FIG. 1 ).
  • a plurality of concave portions 9 are formed on the side plate 8 .
  • the concave portion 9 which is closer to the front surface of the outer case 1 on the door 4 side has an arc shape with a larger curvature.
  • the concave portions 9 can be formed by pressing and drawing the steel plates to be the side plates 8 . By this drawing step, the concave portions 9 are plastically deformed. According to the drum-type washing machine in the present embodiment, surface rigidity of the side plates 8 of the thin steel plates is improved by utilizing the concave portions 9 formed on the side plates 8 .
  • Vibration and an abnormal sound of the side plates 8 at the time of a spin-drying operation are reduced, and further, an acoustic echo, vibration, and the like of the side plates 8 at the time of closing the door 4 with strong force are reduced.
  • a shape and the like of the concave portions 9 will be described later in detail.
  • the outer case 1 is provided with a rotary drum 11 driven and rotated by a motor 10 , and a water tank 12 oscillatably arranged in the outer case 1 .
  • the rotary drum 11 is axially supported in the water tank 12 in such a manner that the rotary drum 11 is rotatable about an axis of rotation parallel to the X direction.
  • suspensions 13 are attached between an upper part of the water tank 12 and the upper surface decorative cover 2 .
  • the suspensions 13 hang down the water tank 12 in the outer case 1 .
  • the water tank 12 is oscillatably suspended down and anti-vibration supported by the suspensions 13 in the outer case 1 .
  • dampers 14 are attached between a lower part of the water tank 12 and an outer case bottom plate 15 . The dampers 14 damping-support the water tank 12 so as to damp vibration of the water tank 12 .
  • a door packing 17 is arranged between the water tank 12 and the front surface decorative cover 5 .
  • the door packing 17 made from flexible material such as rubber is arranged so as to be brought into watertight contact with an indoor glass 16 when the door 4 is closed.
  • the rotary drum 11 is rotated at high speed.
  • clothing 18 as a laundry is moved in various directions in the rotary drum 11 .
  • impact is transmitted from the rotary drum 11 to the water tank 12 , and the water tank 12 is intricately moved and vibrated in the up and down direction, in the left and right direction, and in the front and rear direction.
  • the vibration of the water tank 12 is transmitted to the side plates 8 .
  • the vibration of the water tank 12 is transmitted from the suspensions 13 and the dampers 14 to the side plates 8 (not shown in FIG. 2 ) via the upper surface decorative cover 2 and the bottom plate 15 .
  • This vibration is mainly composed of a wave motion in the up and down direction.
  • the vibration of the water tank 12 is transmitted from the door packing 17 to the side plates 8 (not shown in FIG. 2 ) via the front surface decorative cover 5 .
  • This vibration is mainly composed of a wave motion in the front and rear direction.
  • rigidity of the side plates 8 is required to have surface rigidity corresponding to the vibration mainly in the up and down direction transmitted from the suspensions 13 and the dampers 14 to the side plates 8 via the upper surface decorative cover 2 and the bottom plate 15 , the vibration mainly in the front and rear direction transmitted from the door packing 17 to the side plates 8 via the front surface decorative cover 5 from the front side of the door 4 side, and the impact in the front and rear direction at the time of opening and closing the door.
  • the shape of the side plate 8 is a rectangular shape in which size in the vertical direction and the lateral direction are close to each other, that is, a shape close to a regular square
  • high surface rigidity not only in the up and down direction but also in the front and rear direction is required as the rigidity of the side plates 8 .
  • the concave portions 9 are provided in order to obtain such surface rigidity.
  • the concave portions 9 formed on the side plate 8 include a concave portion 9 a placed at the closest position to the front surface of the outer case 1 on the door 4 side and having a substantially semicircular shape, a concave portion 9 b arranged at the close position to the door 4 next to the concave portion 9 a and having a substantially arc shape with a large curvature, and concave portions 9 c, 9 d, 9 e each having a substantially arc shape with a curvature successively decreased from the concave portion 9 b toward the rear side.
  • the concave portions 9 b, 9 c, 9 d, 9 e have substantially arc shapes extending from an upper end toward a lower end in the up and down direction while curving from the front side to the rear side of the outer case 1 . It should be noted that the concave portions 9 are recessed from the outer side of the outer case 1 toward the inner side of the outer case 1 .
  • the curvatures of the concave portions 9 are set by a catenary curve (catenary).
  • the shape of the concave portion 9 a arranged at the closest position to the door 4 (on the most front side in the front and rear direction) is a substantially semicircular shape.
  • surface rigidity in the vicinity of a center part on the door 4 side of the side plate 8 is particularly improved.
  • the shape of the concave portion 9 a is a substantially semicircular shape in the present embodiment, the shape is not limited to a substantially semicircular shape but may be a substantially semielliptical shape, a substantially arc shape, or other shapes.
  • the “substantially semicircular shape” includes a semicircular shape
  • the “substantially arc shape” includes an arc shape.
  • the shape of the concave portion 9 e which is the most distant from the door 4 is a catenary curve of an arc shape with a small curvature close to a substantially vertical line. Ends B on the upper and lower sides and on the rear side of the concave portion 9 e are close to upper and lower corner portions 19 of the side plate 8 .
  • the surface rigidity of the side plate can be improved by setting depth of the concave portions 9 to 2.0 to 4.0 mm.
  • the depth of the concave portions 9 is not limited to the above depth but can be appropriately set in consideration with the thickness of the side plate 8 and other design matters.
  • centers in the up and down direction of the concave portions 9 a, 9 b, 9 c, 9 d, 9 e are favorably set on a center of the door 4 and on the axis of rotation of the rotary drum 11 .
  • the side plates 8 according to the present invention have the plurality of arc-shaped concave portions so as to correspond to the vibration mainly in the up and down direction transmitted from the suspensions 13 and the dampers 14 to the side plates 8 via the upper surface decorative cover 2 and the bottom plate 15 , and the vibration mainly in the front and rear direction transmitted from the door packing 17 to the side plates 8 via the front surface decorative cover 5 from the front side of the door 4 side.
  • a complicated plane shape is formed by the concave portions 9 when seen from the side, differently from a configuration that uniform concave portions extending in the vertical direction are formed and a configuration that uniform concave portions extending in the horizontal direction are formed. Therefore, high surface rigidity both in the up and down direction and in the front and rear direction is obtained by virtue of the side plates 8 .
  • the impact transmitted to the left and right side plates 8 via the door packing 17 and the front surface decorative cover 5 at the time of closing the door 4 with strong force from a released state is eased by virtue of the strong surface rigidity according to the substantially semicircular concave portion 9 a as well as at the time of the spin-drying operation. Therefore, the acoustic echo, the vibration, and the like of the entire side plates 8 are reduced.
  • the vibration of the outer case at the time of spin-drying and the abnormal sound at the time of opening and closing the door can be reduced by increasing the surface rigidity of the side plates 8 , in particular, the surface rigidity in the vicinity of the door 4 on the front surface. Therefore, the washing machine can be applied to other products accompanied by vibration and provided with an open/close door (such as a dehydrator and a clothes dryer).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US13/637,922 2011-02-16 2012-02-15 Drum-type washing machine Abandoned US20130014546A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011-030487 2011-02-16
JP2011030487A JP5659842B2 (ja) 2011-02-16 2011-02-16 ドラム式洗濯機
PCT/JP2012/000986 WO2012111323A1 (ja) 2011-02-16 2012-02-15 ドラム式洗濯機

Publications (1)

Publication Number Publication Date
US20130014546A1 true US20130014546A1 (en) 2013-01-17

Family

ID=46672267

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/637,922 Abandoned US20130014546A1 (en) 2011-02-16 2012-02-15 Drum-type washing machine

Country Status (6)

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US (1) US20130014546A1 (ja)
EP (1) EP2557221B1 (ja)
JP (1) JP5659842B2 (ja)
CN (1) CN102803599B (ja)
SI (1) SI2557221T1 (ja)
WO (1) WO2012111323A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD742602S1 (en) * 2013-09-02 2015-11-03 Samsung Electronics Co., Ltd. Washing machine
EP3561172A1 (en) * 2013-06-04 2019-10-30 LG Electronics Inc. -1- Laundry treating apparatus comprising a door
US11083296B2 (en) 2018-12-28 2021-08-10 Whirlpool Corporation Top attachment for a laundry appliance
USD959068S1 (en) * 2021-01-10 2022-07-26 Guangdong Weipu Electric Appliances Co., Ltd Clothes dryer
USD1017149S1 (en) * 2021-10-15 2024-03-05 Lg Electronics Inc. Electric drying machine for laundry purpose

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104420136A (zh) * 2013-08-21 2015-03-18 苏州三星电子有限公司 一种洗衣机及其箱体起筋结构
CN104695172A (zh) * 2013-12-10 2015-06-10 苏州三星电子有限公司 一种洗衣机及其壳体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060075791A1 (en) * 2004-10-07 2006-04-13 Lg Electronics Inc. Washing machine

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US5025A (en) * 1847-03-20 Horatio allen
KR100471122B1 (ko) * 2003-05-15 2005-03-10 엘지전자 주식회사 세탁기 댐퍼
US8056172B2 (en) * 2004-05-24 2011-11-15 Whirlpool Corporation Appliance panel with increased natural frequency
EP2163676A3 (en) * 2008-09-12 2011-12-07 Panasonic Corporation Drum type washing machine
JP5453761B2 (ja) * 2008-10-24 2014-03-26 Jfeスチール株式会社 機械用パネル部材
WO2010066653A1 (de) * 2008-12-12 2010-06-17 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einer geprägten wand
JP2011030487A (ja) 2009-07-31 2011-02-17 Nisshin Pharma Inc キノン類の製造方法
JP4865841B2 (ja) 2009-09-10 2012-02-01 パナソニック株式会社 ドラム式洗濯機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060075791A1 (en) * 2004-10-07 2006-04-13 Lg Electronics Inc. Washing machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3561172A1 (en) * 2013-06-04 2019-10-30 LG Electronics Inc. -1- Laundry treating apparatus comprising a door
US11339525B2 (en) 2013-06-04 2022-05-24 Lg Electronics Inc. Laundry treating apparatus
USD742602S1 (en) * 2013-09-02 2015-11-03 Samsung Electronics Co., Ltd. Washing machine
US11083296B2 (en) 2018-12-28 2021-08-10 Whirlpool Corporation Top attachment for a laundry appliance
US11647837B2 (en) 2018-12-28 2023-05-16 Whirlpool Corporation Top attachment for a laundry appliance
USD959068S1 (en) * 2021-01-10 2022-07-26 Guangdong Weipu Electric Appliances Co., Ltd Clothes dryer
USD1017149S1 (en) * 2021-10-15 2024-03-05 Lg Electronics Inc. Electric drying machine for laundry purpose

Also Published As

Publication number Publication date
SI2557221T1 (sl) 2016-05-31
EP2557221A1 (en) 2013-02-13
CN102803599A (zh) 2012-11-28
EP2557221B1 (en) 2016-02-10
CN102803599B (zh) 2015-03-11
JP2012165938A (ja) 2012-09-06
JP5659842B2 (ja) 2015-01-28
EP2557221A4 (en) 2014-01-15
WO2012111323A1 (ja) 2012-08-23

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Owner name: PANASONIC CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOBAYASHI, SHINICHIRO;INOUE, YUTAKA;ITAMI, MASAHIRO;AND OTHERS;SIGNING DATES FROM 20120906 TO 20120911;REEL/FRAME:029634/0745

AS Assignment

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PANASONIC CORPORATION;REEL/FRAME:034194/0143

Effective date: 20141110

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PANASONIC CORPORATION;REEL/FRAME:034194/0143

Effective date: 20141110

STCB Information on status: application discontinuation

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AS Assignment

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., JAPAN

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY FILED APPLICATION NUMBERS 13/384239, 13/498734, 14/116681 AND 14/301144 PREVIOUSLY RECORDED ON REEL 034194 FRAME 0143. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNOR:PANASONIC CORPORATION;REEL/FRAME:056788/0362

Effective date: 20141110