EP2761074B1 - A drum and the production method thereof - Google Patents

A drum and the production method thereof Download PDF

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Publication number
EP2761074B1
EP2761074B1 EP12766028.0A EP12766028A EP2761074B1 EP 2761074 B1 EP2761074 B1 EP 2761074B1 EP 12766028 A EP12766028 A EP 12766028A EP 2761074 B1 EP2761074 B1 EP 2761074B1
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EP
European Patent Office
Prior art keywords
drum
lids
peripheries
circular
connecting line
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.)
Active
Application number
EP12766028.0A
Other languages
German (de)
French (fr)
Other versions
EP2761074A1 (en
Inventor
Bekir Emre KARAGOZLU
Gursu ARIKAN
Sabih Hizal
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
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Arcelik AS
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Publication date
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Publication of EP2761074A1 publication Critical patent/EP2761074A1/en
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Publication of EP2761074B1 publication Critical patent/EP2761074B1/en
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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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis

Definitions

  • the present invention relates to a drum that is suitable for using in laundry washing or washing-drying machines, and the production method thereof.
  • the peripheries of the lids are bent and brought to a position parallel to the peripheries of the cylindrical body and then the seam is formed by bending the connected peripheries of the lids and the cylindrical body at the outer side of the drum. Since the seam areas are outside the drum, the seam areas cannot contact and damage the laundry.
  • a circumferential connecting line is inevitably located along the connecting peripheries of the lid and the body, and furthermore, burr formations are observed along this connecting line due to the metal materials being inserted into each other. Laundry can get stuck at the lid - body connecting line located at the inner side of the drum, and furthermore, laundry is torn during washing or spin-drying by getting caught on the burrs formed on this line.
  • a washing machine drum which comprises a cylindrical body shell and circular front and rear lids, the peripheries of which are connected to the cylindrical shell by means of a seam, and wherein the strength of the said seam is increased against centrifugal forces by being circumferentially stamped.
  • a washer/dryer which has a cylindrical body, circular lids and a drum wherein the body and the lids are connected by means of a seam formed by bending the overlapping edges of the body and the lids.
  • the aim of the present invention is the realization of a drum which is prevented from damaging the laundry placed therein, and the production method thereof.
  • the drum realized in order to attain the aim of the present invention is defined in claim1, the production method is defined in claim 4.
  • the drum is composed of a cylindrical body and two circular lids mounted to the front and rear sides of the body.
  • the body and the lids are connected by means of the seams formed by circumferentially bending and folding outwards the overlapping peripheries of the body and the lids.
  • a circumferential connecting line is located wherein the lid and body peripheries contact each other.
  • the narrow gap in front of the connecting line is covered by a circular set circumferentially extending from the periphery of the drum towards the inside thereof, and the laundry is prevented from getting stuck in the gap in front of the connecting line and being damaged by getting caught on the metal burrs formed there.
  • the set around the drum is shaped as an impression that is formed by inwardly denting the cylindrical outer surface of the drum body by circumferentially applying pressure from the outer side by means of a pressure apparatus.
  • the drum of the present invention is suitable for using in laundry washing or washing-drying machines.
  • the laundry placed in the drum does not get stuck in the narrow gap in front of the connecting line during the rotation of the drum by means of the set and the laundry is prevented from being damaged by getting caught on the metal burrs in this area.
  • the drum (1) comprises a cylindrical body (2), two circular lids (3, 103) mounted to the front and rear sides of the body (2), two circular seams (4) which are produced by circumferentially bending and folding outwards the overlapping peripheries of the body (2) and the lids (3, 103), and two circumferential connecting lines (5) which are located behind the seam (4) and wherein the body (2) and lid (3, 103) peripheries bending outwards contact each other ( Figure 2 ).
  • the drum (1) of the present invention comprises a circular set (6) which is located on the body (2) and extends into the inner area surrounded by the body (2), in the radial direction and circumferentially covers the connecting line (5) ( Figure 3 , Figure 4 , Figure 6 ).
  • the seam (4) is formed by bending and folding the overlapping peripheries of the lid (3, 103) and body (2) such that the peripheries remain at the outer side of the drum (1).
  • a gap (G) is formed between the body (2) and the lid (3, 103) that narrows towards the seam (4).
  • the laundry is prevented from getting stuck in this gap (G) and being torn by means of the set (6) of the present invention.
  • the set (6) circumferentially covers the connecting line (5) in the inner area of the drum (1) and provides that the laundry does not enter the gap (G).
  • the set (6) is shaped as an impression which is formed by denting a strip ring-shaped narrow portion (having a width between 3 and 10 millimeters) of the body (2) near the seam (4) towards the inner area of the body (2) by circumferentially applying pressure from the outer side by means of a pressure apparatus (A) such as a steel roller or disc ( Figure 5) ( Figure 6 ).
  • A a pressure apparatus
  • the impression-shaped set (6) covers the connecting line (5) and circumferentially extends to the inner area of the drum (1).
  • the set (6) furthermore, covers the metal burrs, formed on the connecting line (5) during production while the shape of impression is formed, by crushing them and thus, prevents the laundry from getting stuck in the gap (G) forming the connecting line (5) and also from getting caught on the metal burrs being formed in the gap (G) during production.
  • the cylindrical body (2) produced from a rectangle-shaped metal sheet as in the state of the art is connected with the circular front and rear lids (3, 103). After the peripheries of the front and rear lids (3, 103) and the peripheries of the body (2) overlap, the seams (4) are formed. Afterwards, the seam (4) is smoothed by the pressure apparatus (A) and meanwhile, the portion of the body (2) near the seam (4) area is crushed and hence, the set (6) that circumferentially extends into the drum (1) is formed. In addition to smoothing the seam (4), the pressure apparatus (A) also has the function of forming the set (6) of the present invention.
  • the production method of the drum (1) consists of the following steps:
  • the drum (1) is used in laundry washing machines.
  • the drum (1) is used in laundry washing-drying machines.
  • the laundry placed in the drum (1) does not get stuck in the narrow gap (G) in front of the connecting line (5), wherein the body (2) and the lids (3, 103) are connected, during the rotation of the drum (1).
  • the set (6) furthermore, covers the metal burrs on the connecting line (5) by crushing them and hence, the laundry is prevented from being torn.

Description

  • The present invention relates to a drum that is suitable for using in laundry washing or washing-drying machines, and the production method thereof.
  • In laundry washing or washing-drying machines, laundry is loaded into a drum, the drum is rotated by means of an electric motor and washing, spin-drying and drying processes are realized. In the state of the art, for the production of the drum, a rectangle-shaped sheet metal is bent into a cylinder and the edges that face one another are joined and thus, the hollow cylindrical body of the drum is formed. The front and rear sides of the cylindrical body are covered by a circular front lid, whereon the laundry intake opening is located, and a rear lid. The peripheries of the front and rear lids are connected with the cylindrical body by means of a seam. The peripheries of the lids are bent and brought to a position parallel to the peripheries of the cylindrical body and then the seam is formed by bending the connected peripheries of the lids and the cylindrical body at the outer side of the drum. Since the seam areas are outside the drum, the seam areas cannot contact and damage the laundry. At the inner side of the said seam areas of the drum peripheries located on the outside, a circumferential connecting line is inevitably located along the connecting peripheries of the lid and the body, and furthermore, burr formations are observed along this connecting line due to the metal materials being inserted into each other. Laundry can get stuck at the lid - body connecting line located at the inner side of the drum, and furthermore, laundry is torn during washing or spin-drying by getting caught on the burrs formed on this line.
  • In the European Patent No. EP1520067 , a washing machine drum is explained which comprises a cylindrical body shell and circular front and rear lids, the peripheries of which are connected to the cylindrical shell by means of a seam, and wherein the strength of the said seam is increased against centrifugal forces by being circumferentially stamped.
  • In the European Patent Application No. EP1922444 , a washer/dryer is explained which has a cylindrical body, circular lids and a drum wherein the body and the lids are connected by means of a seam formed by bending the overlapping edges of the body and the lids.
  • The aim of the present invention is the realization of a drum which is prevented from damaging the laundry placed therein, and the production method thereof.
  • The drum realized in order to attain the aim of the present invention is defined in claim1, the production method is defined in claim 4. The drum is composed of a cylindrical body and two circular lids mounted to the front and rear sides of the body. In the production of the drum, the body and the lids are connected by means of the seams formed by circumferentially bending and folding outwards the overlapping peripheries of the body and the lids. At the rear portion of the seam, a circumferential connecting line is located wherein the lid and body peripheries contact each other. The narrow gap in front of the connecting line is covered by a circular set circumferentially extending from the periphery of the drum towards the inside thereof, and the laundry is prevented from getting stuck in the gap in front of the connecting line and being damaged by getting caught on the metal burrs formed there.
  • In an embodiment of the present invention, the set around the drum is shaped as an impression that is formed by inwardly denting the cylindrical outer surface of the drum body by circumferentially applying pressure from the outer side by means of a pressure apparatus.
  • While producing the drum, first the cylindrical body and the circular lids are connected, the connecting line and the seams are formed and while smoothing the seams by means of a pressure apparatus, sets are formed at the same time.
  • The drum of the present invention is suitable for using in laundry washing or washing-drying machines.
  • The laundry placed in the drum does not get stuck in the narrow gap in front of the connecting line during the rotation of the drum by means of the set and the laundry is prevented from being damaged by getting caught on the metal burrs in this area.
  • The drum realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
    • Figure 1 - is the exploded view of a drum.
    • Figure 2 - is the perspective view of a drum wherein the body and the lids are connected.
    • Figure 3 - is the sideways schematic view of a drum.
    • Figure 4 - is the cross-sectional view of detail D in Figure 3.
    • Figure 5 - is the schematic view of the drum seam area before being shaped by a pressure apparatus.
    • Figure 6 - is the schematic view of the drum seam area after being shaped by a pressure apparatus.
  • The elements illustrated in the figures are numbered as follows:
    1. 1. Drum
    2. 2. Body
    3. 3. 103 - Lid
    4. 4. Seam
    5. 5. Connecting line
    6. 6. Set
  • The drum (1) comprises a cylindrical body (2), two circular lids (3, 103) mounted to the front and rear sides of the body (2), two circular seams (4) which are produced by circumferentially bending and folding outwards the overlapping peripheries of the body (2) and the lids (3, 103), and two circumferential connecting lines (5) which are located behind the seam (4) and wherein the body (2) and lid (3, 103) peripheries bending outwards contact each other (Figure 2).
  • The drum (1) of the present invention comprises a circular set (6) which is located on the body (2) and extends into the inner area surrounded by the body (2), in the radial direction and circumferentially covers the connecting line (5) (Figure 3, Figure 4, Figure 6).
  • While connecting the lid (3, 103) with the body (2), the seam (4) is formed by bending and folding the overlapping peripheries of the lid (3, 103) and body (2) such that the peripheries remain at the outer side of the drum (1). In front of the connecting line (5), due to the peripheries of the lids (3, 103) and body (2) being bent outwards, a gap (G) is formed between the body (2) and the lid (3, 103) that narrows towards the seam (4). The laundry is prevented from getting stuck in this gap (G) and being torn by means of the set (6) of the present invention. The set (6) circumferentially covers the connecting line (5) in the inner area of the drum (1) and provides that the laundry does not enter the gap (G).
  • In an embodiment of the present invention, the set (6) is shaped as an impression which is formed by denting a strip ring-shaped narrow portion (having a width between 3 and 10 millimeters) of the body (2) near the seam (4) towards the inner area of the body (2) by circumferentially applying pressure from the outer side by means of a pressure apparatus (A) such as a steel roller or disc (Figure 5) (Figure 6). The impression-shaped set (6) covers the connecting line (5) and circumferentially extends to the inner area of the drum (1). The set (6), furthermore, covers the metal burrs, formed on the connecting line (5) during production while the shape of impression is formed, by crushing them and thus, prevents the laundry from getting stuck in the gap (G) forming the connecting line (5) and also from getting caught on the metal burrs being formed in the gap (G) during production.
  • While producing the drum (1), the cylindrical body (2) produced from a rectangle-shaped metal sheet as in the state of the art is connected with the circular front and rear lids (3, 103). After the peripheries of the front and rear lids (3, 103) and the peripheries of the body (2) overlap, the seams (4) are formed. Afterwards, the seam (4) is smoothed by the pressure apparatus (A) and meanwhile, the portion of the body (2) near the seam (4) area is crushed and hence, the set (6) that circumferentially extends into the drum (1) is formed. In addition to smoothing the seam (4), the pressure apparatus (A) also has the function of forming the set (6) of the present invention. An additional production step is not required to form the set (6), since in the production step, wherein the seam (4) is smoothed, the set (6) is formed in the meantime. By a simple modification performed on the apparatus (A) that is used to smooth the seam (4), the apparatus (A) gains the feature of forming the set (6) and performing this modification does not bring additional costs.
  • The production method of the drum (1) consists of the following steps:
    • connecting the body (2) and the lids (3, 103),
    • forming the seam (4),
    • smoothing the seam (4) by means of the pressure apparatus (A) and forming the set (6) simultaneously (Figure 5, Figure 6).
  • In an embodiment of the present invention, the drum (1) is used in laundry washing machines.
  • In another embodiment of the present invention, the drum (1) is used in laundry washing-drying machines.
  • By means of the set (6), the laundry placed in the drum (1) does not get stuck in the narrow gap (G) in front of the connecting line (5), wherein the body (2) and the lids (3, 103) are connected, during the rotation of the drum (1). The set (6), furthermore, covers the metal burrs on the connecting line (5) by crushing them and hence, the laundry is prevented from being torn.
  • It is to be understood that the present invention is not limited by the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims (5)

  1. A drum (1) comprising a cylindrical body (2), two circular lids (3, 103) having peripheries bent and brought to a position parallel to and contacting the peripheries of the cylindrical body (2) which are mounted to the front and rear sides of the body (2) by two circular seams (4) which are produced by circumferentially bending and folding outwards the overlapping peripheries of the body (2) and the lids (3, 103) so that a circumferential connecting line (5) between each lid (3, 103) and the cylindrical body (2) on the inside of the drum (1) and a narrow gap (G) in front of each connecting line (5) is formed characterized in that said narrow gaps (G) in front of the connecting lines (5) are covered each by a circular impression set (6) circumferentially extending from the periphery of the drum (1) towards the inside thereof.
  2. A laundry washing machine (1) characterized by a drum (1) as in Claim 1.
  3. A laundry washing-drying machine (1) characterized by a drum (1) as in Claim 1.
  4. A production method for a drum (1) according to Claim 1, comprising the steps of:
    - connecting the body (2) and the lids (3, 103),
    - forming one of the seams (4),
    - smoothing said one of the seams (4) by means of a pressure apparatus (A) and forming the respective set (6) simultaneously by means of the same pressure apparatus (A).
  5. A production method for a drum (1) according to Claim 4 characterized by denting the body (2) near a different one of the two circular seams (4, 104) towards the inner area by circumferentially applying pressure from the outer side by means of a pressure apparatus (A).
EP12766028.0A 2011-09-27 2012-09-14 A drum and the production method thereof Active EP2761074B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201109511 2011-09-27
PCT/EP2012/068159 WO2013045300A1 (en) 2011-09-27 2012-09-14 A drum and the production method thereof

Publications (2)

Publication Number Publication Date
EP2761074A1 EP2761074A1 (en) 2014-08-06
EP2761074B1 true EP2761074B1 (en) 2019-03-06

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EP12766028.0A Active EP2761074B1 (en) 2011-09-27 2012-09-14 A drum and the production method thereof

Country Status (5)

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EP (1) EP2761074B1 (en)
CN (1) CN103827381B (en)
RU (1) RU2569596C1 (en)
TR (1) TR201718191T3 (en)
WO (1) WO2013045300A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3092333B1 (en) * 2013-12-30 2018-12-05 Arçelik Anonim Sirketi A drum with improved mechanical strength and the production method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005603A1 (en) * 2002-07-03 2004-01-15 BSH Bosch und Siemens Hausgeräte GmbH Washing machine drum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1871983U (en) * 1963-02-18 1963-05-09 Heinrich Winkelmann SPIN DRUM, IN PARTICULAR FOR SPINTERS.
DE3914475A1 (en) * 1989-05-02 1990-11-08 Bosch Siemens Hausgeraete WASHING MACHINE DRUM
WO2005049909A1 (en) * 2003-11-20 2005-06-02 Arcelik Anonim Sirketi A drum with stiffening corrugations along the seam
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005603A1 (en) * 2002-07-03 2004-01-15 BSH Bosch und Siemens Hausgeräte GmbH Washing machine drum

Also Published As

Publication number Publication date
EP2761074A1 (en) 2014-08-06
TR201718191T3 (en) 2017-12-21
RU2569596C1 (en) 2015-11-27
CN103827381B (en) 2016-08-31
CN103827381A (en) 2014-05-28
WO2013045300A1 (en) 2013-04-04

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