EP3092333B1 - A drum with improved mechanical strength and the production method thereof - Google Patents

A drum with improved mechanical strength and the production method thereof Download PDF

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Publication number
EP3092333B1
EP3092333B1 EP14790640.8A EP14790640A EP3092333B1 EP 3092333 B1 EP3092333 B1 EP 3092333B1 EP 14790640 A EP14790640 A EP 14790640A EP 3092333 B1 EP3092333 B1 EP 3092333B1
Authority
EP
European Patent Office
Prior art keywords
drum
flange
sheet metal
fold
circular
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.)
Not-in-force
Application number
EP14790640.8A
Other languages
German (de)
French (fr)
Other versions
EP3092333A1 (en
Inventor
Uguray KALOGLU
Irfan Celik
Mecid FILIZ
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
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP3092333A1 publication Critical patent/EP3092333A1/en
Application granted granted Critical
Publication of EP3092333B1 publication Critical patent/EP3092333B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • B21D51/2661—Sealing or closing means therefor
    • 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.
  • 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.
  • the aim of the present invention is the realization of a drum, the mechanical strength of which is improved, and the production method thereof.
  • the drum realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a cylindrical body produced from a sheet metal, a circular cover mounted to the rear side of the body, a circular fold enabling the rear edge of the body to be joined with the cover, a drum spider having more than one spider arm providing the rotation of the drum, and a circular flange that surrounds the rear side of the body and enables the spider arms that are fixed onto the flange and extending from the body towards the fold to be connected to the body.
  • the drum of the present invention comprises a strengthening strip that is formed by bending the edge of the sheet metal forming the flange towards the front or rear surface of the sheet metal as much as the width of the flange before the seaming process wherein the fold is formed, that is an extension of the sheet metal, that extends backwards from the fold and at least partially covers the flange.
  • a strengthening strip that is formed by bending the edge of the sheet metal forming the flange towards the front or rear surface of the sheet metal as much as the width of the flange before the seaming process wherein the fold is formed, that is an extension of the sheet metal, that extends backwards from the fold and at least partially covers the flange.
  • the drum is used in laundry washing machines.
  • the drum is used in laundry washing-drying machines.
  • the drum (1) comprises a cylindrical body (2) produced from a rectangular sheet metal (A), a circular cover (3) mounted to the rear side of the body (2), a circular fold (4) enabling the rear edge of the body (2) to be joined with the cover (3), a drum spider (6) having more than one spider arm (5) that enables the movement of the electric motor and the transmission elements to be transferred to the body (2), and a circular flange (7) that surrounds the rear side of the body (2) and enables the spider arms (5) extending from the body (2) towards the fold (4) to be connected to the body (2).
  • the drum (1) of the present invention comprises a strengthening strip (8) that is formed by bending the edge (K) of the sheet metal (A) forming the flange (7) towards the front or rear surface of the sheet metal (A) almost as much as the width of the flange (7) before the seaming process wherein the fold (4) is formed, that extends from the fold (4) towards the body (2) and that overlaps with the flange (7).
  • the flange (7) is prevented from being deformed by the spider arms (5) that are fixed onto the flange (7) and enable the movement received from the motor to the body (2).
  • the strengthening strip (8) is circular and surrounds the flange (7). Accordingly, the thickness of the body (2) is increased at each point along the flange (7).
  • more than one strengthening strip (8) extends over the flange (7) at the regions where the spider arms (5) are connected to the flange (7).
  • 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 strengthening strip (8) and the cover (3) that are disposed in an overlapped manner while forming the flange (7), strengthen the drum (1) along the flange (7) whereto they are connected.
  • the strengthening strip (8) that is positioned almost parallel to the sheet metal (A) with one or more than one layer, the thickness of the flange (7) is increased.
  • the flange (7) is prevented from being deformed by the spider arms (5) that are fixed onto the flange (7) and enable the movement received from the motor to the body (2).

Landscapes

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

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 rectangular sheet metal is bent into a cylinder and the peripheries 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 cover, whereon the laundry loading opening is located, and a rear cover. Spider arms, that transfer energy generated by the electric motor to the drum and thus enable the drum to rotate, are connected onto the circular line where the sheet metal and the rear cover are joined. Due to the rotational movement of the drum, forces act in the radial and axial directions onto the joint where the spider arms are connected with the sheet metal and the rear cover. Due to the acting forces, the drum is deformed in the course of time, risking the detachment of the spider arms from the drum.
  • In the state of the art 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.
  • The aim of the present invention is the realization of a drum, the mechanical strength of which is improved, and the production method thereof.
  • The drum realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a cylindrical body produced from a sheet metal, a circular cover mounted to the rear side of the body, a circular fold enabling the rear edge of the body to be joined with the cover, a drum spider having more than one spider arm providing the rotation of the drum, and a circular flange that surrounds the rear side of the body and enables the spider arms that are fixed onto the flange and extending from the body towards the fold to be connected to the body. The drum of the present invention comprises a strengthening strip that is formed by bending the edge of the sheet metal forming the flange towards the front or rear surface of the sheet metal as much as the width of the flange before the seaming process wherein the fold is formed, that is an extension of the sheet metal, that extends backwards from the fold and at least partially covers the flange. Thus, the mechanical strength of the drum is improved around the flange where the thickness of the sheet metal is increased by means of the strengthening strip.
  • In an embodiment of the present invention, the drum is used in laundry washing machines.
  • In another embodiment of the present invention, the drum is used in laundry washing-drying machines.
  • 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 schematic view of a sheet metal.
    Figure 3 -
    is the schematic view of the drum spider and the flange.
    Figure 4 -
    is the schematic view of the drum fold region.
  • The elements illustrated in the figures are numbered as follows:
    1. 1. Drum
    2. 2. Body
    3. 3. Cover
    4. 4. Fold
    5. 5. Spider arm
    6. 6. Drum spider
    7. 7. Flange
    8. 8. Strengthening strip
  • The drum (1) comprises a cylindrical body (2) produced from a rectangular sheet metal (A), a circular cover (3) mounted to the rear side of the body (2), a circular fold (4) enabling the rear edge of the body (2) to be joined with the cover (3), a drum spider (6) having more than one spider arm (5) that enables the movement of the electric motor and the transmission elements to be transferred to the body (2), and a circular flange (7) that surrounds the rear side of the body (2) and enables the spider arms (5) extending from the body (2) towards the fold (4) to be connected to the body (2).
  • The drum (1) of the present invention comprises a strengthening strip (8) that is formed by bending the edge (K) of the sheet metal (A) forming the flange (7) towards the front or rear surface of the sheet metal (A) almost as much as the width of the flange (7) before the seaming process wherein the fold (4) is formed, that extends from the fold (4) towards the body (2) and that overlaps with the flange (7). Thus, the flange (7) is prevented from being deformed by the spider arms (5) that are fixed onto the flange (7) and enable the movement received from the motor to the body (2).
  • In an embodiment of the present invention, the strengthening strip (8) is circular and surrounds the flange (7). Accordingly, the thickness of the body (2) is increased at each point along the flange (7).
  • In an embodiment of the present invention, more than one strengthening strip (8) extends over the flange (7) at the regions where the spider arms (5) are connected to the flange (7).
  • The production method of the drum (1) consists of the following steps:
    • bending a long edge of a rectangular sheet metal (A) with which the body (2) is produced, as much as the width of the flange (7),
    • rendering the body (2) cylindrical,
    • joining the body (2) with the cover (3),
    • forming the fold (4) so that the strengthening strip (8) extends over the flange (7).
  • 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 present invention, the strengthening strip (8) and the cover (3), that are disposed in an overlapped manner while forming the flange (7), strengthen the drum (1) along the flange (7) whereto they are connected. By means of the strengthening strip (8) that is positioned almost parallel to the sheet metal (A) with one or more than one layer, the thickness of the flange (7) is increased. Thus, the flange (7) is prevented from being deformed by the spider arms (5) that are fixed onto the flange (7) and enable the movement received from the motor to the body (2).

Claims (6)

  1. A drum (1) comprising a cylindrical body (2) produced from a rectangular sheet metal (A), a circular cover (3) mounted to the rear side of the body (2), a circular fold (4) enabling the rear edge of the body (2) to be joined with the cover (3), a drum spider (6) having more than one spider arm (5) that enables the movement of an electric motor and of transmission elements to be transferred to the body (2), and a circular flange (7) that surrounds the rear side of the body (2) and enables the spider arms (5) that are fixed onto the flange and extending from the body (2) towards the fold (4) to be connected to the body (2), characterized by a strengthening strip (8) that is formed by bending the edge (K) of the sheet metal (A) forming the flange (7) towards the front or rear surface of the sheet metal (A) almost as much as the width of the flange (7), that extends from the fold (4) towards the body (2) and that overlaps with the flange (7).
  2. A drum (1) as in Claim 1, characterized by the strengthening strip (8) being circular and surrounding the flange (7).
  3. A drum (1) as in Claim 1, characterized by more than one strengthening strip (8) that extends over the flange (7) at the regions where the spider arms (5) are connected to the flange (7).
  4. A production method for a drum (1) as in Claim 1, comprising the steps of:
    - bending a long edge of a rectangular sheet metal (A) with which the body (2) is produced, as much as the width of the flange (7),
    - rendering the body (2) cylindrical,
    - joining the body (2) with the cover (3),
    - forming the fold (4) so that the strengthening strip (8) extends over the flange (7).
  5. A laundry washing machine characterized by a drum (1) as in any one of the above claims.
  6. A laundry washing-drying machine characterized by a drum (1) as in any one of Claims 1 to 4.
EP14790640.8A 2013-12-30 2014-10-30 A drum with improved mechanical strength and the production method thereof Not-in-force EP3092333B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201315490 2013-12-30
PCT/EP2014/073346 WO2015101432A1 (en) 2013-12-30 2014-10-30 A drum with improved mechanical strength and the production method thereof

Publications (2)

Publication Number Publication Date
EP3092333A1 EP3092333A1 (en) 2016-11-16
EP3092333B1 true EP3092333B1 (en) 2018-12-05

Family

ID=51842543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14790640.8A Not-in-force EP3092333B1 (en) 2013-12-30 2014-10-30 A drum with improved mechanical strength and the production method thereof

Country Status (2)

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EP (1) EP3092333B1 (en)
WO (1) WO2015101432A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110735287A (en) * 2019-10-18 2020-01-31 格力电器(成都)有限公司 kinds of washing machine inner barrel and washing machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2214104B1 (en) 2002-07-03 2005-12-16 Bsh Electrodomesticos España, S.A. WASHER DRUM.
TR201101157A2 (en) * 2011-02-08 2012-08-22 Bsh Ev Aletleri̇ San. Ve Ti̇c. A.Ş. A drum-type front-loading washing machine
DE102011101664A1 (en) * 2011-05-16 2013-05-16 Welser Profile Austria Gmbh Method for inwardly/outwardly everting end of e.g. rectangular pipe, involves re-generating bulge by removing mold sleeve from pipe after calibration process, and supporting pipe end by mandrel, where shape of mandrel corresponds to contour
RU2569596C1 (en) * 2011-09-27 2015-11-27 Арчелык Аноним Ширкети Drum and method of its manufacturing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3092333A1 (en) 2016-11-16
WO2015101432A1 (en) 2015-07-09

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