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EP2362922A1 - A horizontal axis washing machine with recess in the tub to accomodate drum seam - Google Patents

A horizontal axis washing machine with recess in the tub to accomodate drum seam

Info

Publication number
EP2362922A1
EP2362922A1 EP09756708A EP09756708A EP2362922A1 EP 2362922 A1 EP2362922 A1 EP 2362922A1 EP 09756708 A EP09756708 A EP 09756708A EP 09756708 A EP09756708 A EP 09756708A EP 2362922 A1 EP2362922 A1 EP 2362922A1
Authority
EP
European Patent Office
Prior art keywords
tub
drum
seam
washing machine
housing
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.)
Granted
Application number
EP09756708A
Other languages
German (de)
French (fr)
Other versions
EP2362922B1 (en
Inventor
Hale Ozkan
Ibrahim Yildirim
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.)
Arcelik AS
Original Assignee
Arcelik AS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41467096&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2362922(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL09756708T priority Critical patent/PL2362922T3/en
Publication of EP2362922A1 publication Critical patent/EP2362922A1/en
Application granted granted Critical
Publication of EP2362922B1 publication Critical patent/EP2362922B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • D06F37/26—Casings; Tubs

Definitions

  • the present invention relates to a horizontal axis washing machine having a drying function.
  • the drum is beared by the tub with the roller bearings assembled on the rear wall of the tub. Accordingly, the magnitude of the relative movements between the tub and the drum is at a minimum in the center of the bearing. The amount of the movement increases as moved away from the center. And consequently, the distance of the support arms disposed on the rear wall of the drum nearest to the tub is configured to increase as moved away from the center depending on the bending motion of the drum.
  • the region that contains the seam joining the front and rear lids of the drum and the drum body is the region that is subjected to the maximum amount of translatory motion resulting from the bending of the drum which, as a rotating part, is most subjected to the bending moment. Accordingly, particularly in washing machines wherein a plastic tub is used, the seam contacts with and scrapes the rear wall of the tub. Therefore, the distance remaining between the tub and the drum should be adjusted properly.
  • the object of the present invention is to design a washing/drying machine comprising a drum wherein the usable volume is increased by decreasing the space between itself and the tub.
  • the washing machine realized to fulfill the object of the present invention, explicated in the first claim and the respective claims thereof, comprises a housing formed on the tub walls, coinciding with the seam along the line on the rear wall of the tub.
  • the housing forms a recess on the surface of the tub walls facing the drum.
  • the housing extends along a preferably circular line on the front and rear wall.
  • the depth of the drum is increased by protecting the distance between the seam and the tub and without changing the size and shape of the seam.
  • the dimensions of the drum are increased by keeping the dimensions of the tub the same.
  • the housing is disposed on the rear wall of the tub, at the level of the seam, where the distance between the drum and the tub rear wall is the most. In this case, the contact of the seam with the tub rear wall is prevented even in conditions wherein the drum is in the most translated positions due to unbalanced load or similar reasons.
  • FIG. 1 is the perspective view of a washing machine.
  • Figure 2 - is the cross-sectional view of the drum and the tub in the state of the art.
  • Figure 3 - is the cross-sectional view of a drum and a tub.
  • Figure 4 - is the partial rear view of the tub.
  • Figure 5 - is the partial view of the tub from another angle.
  • the washing machine (1) of the present invention has a horizontal axis and comprises a cylindrical tub (2) having a front wall (60), a rear wall (6) and a side wall and a drum (3) assembled into the said tub (2) ( Figure 1).
  • the drum (3) comprises:
  • the washing machine (1) comprises a housing (5), disposed on the front and/or the rear wall (6, 60), that extends at the level of the seam (4), along the line wherein the walls (6, 60) and the side wall join.
  • the housing (5) preferably extends all around on the walls (6, 60).
  • the housing (5) is disposed at the position where the seam (4) can reach on the tub (2) at the excessive displacements of the drum (3) in the horizontal plane ( Figure 3).
  • the housing (5) is disposed opposite the seam (4) and in the same horizontal direction as the seam (4) on the portion of the walls (6, 60) whereto the seam (4) corresponds and forms a recess on the surface of the tub (2) walls (6, 60) facing the drum (3) ( Figure 4 and Figure 5).
  • the housing (5) is sized such that it prevents the seam (4) from entering into the housing (5) and impact with the walls (6, 60) even in the excessive displacements of the drum (3) on the tub (2) in the horizontal plane.
  • the depth of the drum (3) is increased, by protecting the distance between the seam (4) and the tub (2), without changing the length of the seam (4) formed outside the body (7) and towards the tub (2). Consequently, even if the depth of the housing (5) is not too large, a considerably wide cylindrical volume is gained behind the drum (3). This volume can be utilized for increasing the volume of the drum (3) if the dimensions of the tub (2) are kept the same.
  • the drum (3) is beared by the tub (2) at the center of the tub (2) rear wall (6). Accordingly, the movements of the tub (2) and the drum (3) are at minimum in this section where the drum (3) is beared by the tub (2). The amount of movement of the tub (2) and the drum (3) increases as moved away from this section in the radial direction. Therefore, the distance of the drum (3) rear wall nearest the tub (2) from the tub (2) rear wall (6) is adjusted to increase as moved away from the center, depending on the bending motion of the drum (3). The distance of the drum (3) farthest away from the tub (2) rear wall (6) is the section wherein the seam (4) is contained on the drum (3).
  • the housing (5) is disposed on the rear wall (6) of the tub (2), precisely aligned with the said seam (4), and the contact of the seam (4) with the rear wall (6) of the tub (2) is prevented even in conditions wherein the drum (3) is in the most translated position due to unbalanced load or similar reasons.
  • the tub (2) is preferably produced of a plastic material.
  • the tub (2) is produced of metal.
  • the housing (5) is shaped as a protuberance and is formed on the walls (6, 60) by the deep drawing method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The washing machine (1) of the present invention comprises a tub (2) and a drum (3) assembled into this tub (2) having a cylindrical body (7), two circular lids (8, 80) mounted to the body (7) such that the front and rear surfaces are formed and a seam (4) formed along a circular line by bending the side by side edges of the body (7) and the lids (8, 80), in the form of a protrusion extending towards the tub (2) on the exterior surface of the body (7), and outside the volume formed by the lids (8, 80) and the body (7). The tub (2) furthermore comprises a recess (5) to accomodate the protrusion from the body (7).

Description

D riotion A HORIZONTAL AXIS WASHING MACHINE WITH RECESS IN THE TUB
P TO ACCOMODATE DRUM SEAM
[0001] The present invention relates to a horizontal axis washing machine having a drying function.
[0002] As is known, in washing machines having a drying function, the laundry to be washed and/or dried are loaded in a perforated drum. The said drum is rotated by being driven with a motor whereby the processes such as washing, drying and spinning are performed.
[0003] In state of the art, in order to produce these drums (T), a quadrangular shaped metal plate is bent cylindrically and the overlapping edges are folded along a line parallel to the rotational axis and clamped together thereby forming the body (G). Thereafter, the circular metal plates forming the front and rear lids (P) are joined with the body (G). The front and rear lids (P) and the overlapping edges of the body (G) are bent and folded like a hook thereby forming a circular seam (S). The seam (S) is a circular protrusion and extends towards the tub (K) on the exterior surface of the body (G). On the other hand, the drum (T) oscillates and vibrates while rotating inside the tub (K). Therefore, a distance has to be left between the drum (T) and the tub (K). Due to the said seam (S) the distance is further increased. This condition also prevents increasing the volume of the drum (T) (Figure 2).
[0004] In washing machines wherein a plastic tub is used, the distance between the drum and the tub is more, due to the resiliency of the plastic material, than the applications wherein the tub is made of metal.
[0005] The drum is beared by the tub with the roller bearings assembled on the rear wall of the tub. Accordingly, the magnitude of the relative movements between the tub and the drum is at a minimum in the center of the bearing. The amount of the movement increases as moved away from the center. And consequently, the distance of the support arms disposed on the rear wall of the drum nearest to the tub is configured to increase as moved away from the center depending on the bending motion of the drum.
[0006] The region that contains the seam joining the front and rear lids of the drum and the drum body is the region that is subjected to the maximum amount of translatory motion resulting from the bending of the drum which, as a rotating part, is most subjected to the bending moment. Accordingly, particularly in washing machines wherein a plastic tub is used, the seam contacts with and scrapes the rear wall of the tub. Therefore, the distance remaining between the tub and the drum should be adjusted properly.
[0007] In the state of the art International Patent Application no WO2007023453, the explanation is given whereby the volume of the drum can be increased without changing the volume of the tub by leaving a lesser amount of distance between the drum and the tub by bending the seam extending towards the tub.
[0008] The object of the present invention is to design a washing/drying machine comprising a drum wherein the usable volume is increased by decreasing the space between itself and the tub.
[0009] The washing machine realized to fulfill the object of the present invention, explicated in the first claim and the respective claims thereof, comprises a housing formed on the tub walls, coinciding with the seam along the line on the rear wall of the tub. The housing forms a recess on the surface of the tub walls facing the drum. The housing extends along a preferably circular line on the front and rear wall.
[0010] Accordingly, the depth of the drum is increased by protecting the distance between the seam and the tub and without changing the size and shape of the seam. In other words, the dimensions of the drum are increased by keeping the dimensions of the tub the same.
[0011] In an embodiment of the present invention, the housing is disposed on the rear wall of the tub, at the level of the seam, where the distance between the drum and the tub rear wall is the most. In this case, the contact of the seam with the tub rear wall is prevented even in conditions wherein the drum is in the most translated positions due to unbalanced load or similar reasons.
[0012] By means of the present invention, it is possible to leave a lesser amount of space between the drum and the tub, enabling to increase the drum volume without changing the length of the seam.
[0013] A washing machine designed to fulfill the object of the present invention is illustrated in the attached figures, where: [0014] Figure 1 - is the perspective view of a washing machine. [0015] Figure 2 - is the cross-sectional view of the drum and the tub in the state of the art.
[0016] Figure 3 - is the cross-sectional view of a drum and a tub. [0017] Figure 4 - is the partial rear view of the tub. [0018] Figure 5 - is the partial view of the tub from another angle. [0019] The elements illustrated in the figures are numbered as follows:
1. Washing machine
2. Tub
3. Drum
4. Seam
5. Housing
6. , 60. Wall
7. Body
8. , 80. Lid
[0020] The washing machine (1) of the present invention has a horizontal axis and comprises a cylindrical tub (2) having a front wall (60), a rear wall (6) and a side wall and a drum (3) assembled into the said tub (2) (Figure 1).
[0021] The drum (3) comprises:
- a cylindrical body (7),
- two circular lids (8, 80) mounted to the body (7) such that the front and rear surfaces are formed and
- at least one seam (4) formed along a circular line by bending the side by side edges of the body (7) and the lids (8, 80), in the form of a protrusion on the exterior surface of the body (7), extending towards the tub (2) and outside the volume formed by the lids (8, 80) and the body (7).
[0022] The washing machine (1) comprises a housing (5), disposed on the front and/or the rear wall (6, 60), that extends at the level of the seam (4), along the line wherein the walls (6, 60) and the side wall join. The housing (5) preferably extends all around on the walls (6, 60). The housing (5) is disposed at the position where the seam (4) can reach on the tub (2) at the excessive displacements of the drum (3) in the horizontal plane (Figure 3).
[0023] The housing (5) is disposed opposite the seam (4) and in the same horizontal direction as the seam (4) on the portion of the walls (6, 60) whereto the seam (4) corresponds and forms a recess on the surface of the tub (2) walls (6, 60) facing the drum (3) (Figure 4 and Figure 5).
[0024] The housing (5) is sized such that it prevents the seam (4) from entering into the housing (5) and impact with the walls (6, 60) even in the excessive displacements of the drum (3) on the tub (2) in the horizontal plane.
[0025] By means of the housing (5) formed on the tub (2), explicated in the embodiment of the present invention, the depth of the drum (3) is increased, by protecting the distance between the seam (4) and the tub (2), without changing the length of the seam (4) formed outside the body (7) and towards the tub (2). Consequently, even if the depth of the housing (5) is not too large, a considerably wide cylindrical volume is gained behind the drum (3). This volume can be utilized for increasing the volume of the drum (3) if the dimensions of the tub (2) are kept the same.
[0026] The drum (3) is beared by the tub (2) at the center of the tub (2) rear wall (6). Accordingly, the movements of the tub (2) and the drum (3) are at minimum in this section where the drum (3) is beared by the tub (2). The amount of movement of the tub (2) and the drum (3) increases as moved away from this section in the radial direction. Therefore, the distance of the drum (3) rear wall nearest the tub (2) from the tub (2) rear wall (6) is adjusted to increase as moved away from the center, depending on the bending motion of the drum (3). The distance of the drum (3) farthest away from the tub (2) rear wall (6) is the section wherein the seam (4) is contained on the drum (3). The housing (5) is disposed on the rear wall (6) of the tub (2), precisely aligned with the said seam (4), and the contact of the seam (4) with the rear wall (6) of the tub (2) is prevented even in conditions wherein the drum (3) is in the most translated position due to unbalanced load or similar reasons.
[0027] In the preferred embodiment of the present invention, the tub (2) is preferably produced of a plastic material.
[0028] In another embodiment of the present invention, the tub (2) is produced of metal. In this embodiment, the housing (5) is shaped as a protuberance and is formed on the walls (6, 60) by the deep drawing method.
[0029] By means of the washing machine (1) of the present invention, it is possible to increase the drum (3) volume without changing the length of the seam (4).
[0030] It is to be understood that the present invention is not limited to the embodiments disclosed above and an expert in the technique can easily introduce different embodiments. These different embodiments should also be considered within the scope of the protection postulated by the claims of the present invention.

Claims

Claims
1. A horizontal axis washing machine (1) that comprises a cylindrical tub (2) having a front (60), a rear (6) and a side wall and a drum (3) assembled into the said tub (2) having
- a cylindrical body (7),
- two circular lids (8, 80) mounted to the body (7) such that the front and rear surfaces are formed and
- a seam (4) formed along a circular line by bending the side by side edges of the body (7) and the lids (8, 80), in the form of a protrusion extending towards the tub (2) on the exterior surface of the body (7) and outside the volume formed by the lids (8, 80) and the body (7).
- and characterized by a housing (5) disposed on the front and/or the rear wall (6, 60), that extends at the level of the seam (4), along the line wherein the walls (6, 60) and the side wall join.
2. A washing machine (1) as in Claim 1 , characterized by a housing (5) that extends all around on the walls (6, 60).
3. A washing machine (1) as in Claim 1 or 2, characterized by a housing (5) disposed on the tub (2) rear wall (6), at the level of the seam (4). and at the point wherein the drum (3) is farthest away from the tub (2) rear wall (6).
4. A washing machine (1) as in any one of the above Claims, characterized by a housing (5) disposed at the position whereto the seam (4) can reach on the tub (2) at the excessive displacements of the drum (3) in the horizontal plane.
5. A washing machine (1) as in any one of the above Claims, characterized by a tub (2) that is produced of plastic material.
EP09756708A 2008-11-13 2009-11-12 A horizontal axis washing machine with recess in the tub to accomodate drum seam Revoked EP2362922B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09756708T PL2362922T3 (en) 2008-11-13 2009-11-12 A horizontal axis washing machine with recess in the tub to accomodate drum seam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200808649 2008-11-13
PCT/EP2009/065040 WO2010055085A1 (en) 2008-11-13 2009-11-12 A horizontal axis washing machine with recess in the tub to accomodate drum seam

Publications (2)

Publication Number Publication Date
EP2362922A1 true EP2362922A1 (en) 2011-09-07
EP2362922B1 EP2362922B1 (en) 2012-07-11

Family

ID=41467096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09756708A Revoked EP2362922B1 (en) 2008-11-13 2009-11-12 A horizontal axis washing machine with recess in the tub to accomodate drum seam

Country Status (5)

Country Link
EP (1) EP2362922B1 (en)
CN (1) CN102216512B (en)
ES (1) ES2390851T3 (en)
PL (1) PL2362922T3 (en)
WO (1) WO2010055085A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101871271B1 (en) * 2011-12-09 2018-06-27 엘지전자 주식회사 Washing machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936017U (en) * 1965-08-31 1966-04-07 Constructa Werke G M B H WASHING MACHINE DRUM.
KR100657465B1 (en) * 2004-05-15 2006-12-13 엘지전자 주식회사 How to make a drum in the washing machine
WO2007023453A1 (en) * 2005-08-22 2007-03-01 Arcelik Anonim Sirketi A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids
DE102006007066A1 (en) * 2006-02-15 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Washing laundry drum

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010055085A1 *

Also Published As

Publication number Publication date
WO2010055085A1 (en) 2010-05-20
CN102216512B (en) 2013-02-27
CN102216512A (en) 2011-10-12
PL2362922T3 (en) 2012-12-31
EP2362922B1 (en) 2012-07-11
ES2390851T3 (en) 2012-11-19

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