WO2018224264A1 - Washer-dryer counterweight connection - Google Patents

Washer-dryer counterweight connection Download PDF

Info

Publication number
WO2018224264A1
WO2018224264A1 PCT/EP2018/062733 EP2018062733W WO2018224264A1 WO 2018224264 A1 WO2018224264 A1 WO 2018224264A1 EP 2018062733 W EP2018062733 W EP 2018062733W WO 2018224264 A1 WO2018224264 A1 WO 2018224264A1
Authority
WO
WIPO (PCT)
Prior art keywords
tub
counterweight
boss
fixing piece
plastic
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.)
Ceased
Application number
PCT/EP2018/062733
Other languages
French (fr)
Inventor
Sercan CILINGIR
Orhan Daioglu
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 WO2018224264A1 publication Critical patent/WO2018224264A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • D06F37/265—Counterweights mounted to the tub; Mountings 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
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding

Definitions

  • the present invention relates to fastening a counterweight on a tub used in a washer-dryer.
  • a tensile force is applied on plastic by the screw connections formed on the plastic material, or the plastic extension is widened by being forced from within by the screw, thereby enabling the counterweight to stay fixed on the tub.
  • loads form in tensioning direction around the holes engaging the plastic extensions of the concrete counterweight, and this leads to formation of fissures on the concrete.
  • Size changes in the mounting bore of the counterweight and deformations on the plastic extensions likely to occur in time, decrease the value of the force fixing the counterweight.
  • the counterweight begins coming loose, increases its movement amplitude by making room for itself on the plastic extensions in time, and causes the operating noise to increase.
  • a screw's own pre-tension is utilized to provide a pre-tensioned connection so as to inhibit the counterweight from coming loose, or the desired pre-tension is provided by a spring washer.
  • EP 1 426 477 discloses a snap-fit connection between a counterweight and tub used in a washing machine.
  • the international patent application no. WO 2007 129 353 (A1) relates to a system for fixing to a tub, a counterweight used in a washing machine.
  • the aim of the present invention is to realize a washer-dryer in which a counterweight is enabled to be fastened elastically and without space on a tub, and is prevented from untighten and coming loose in time.
  • plastic fixing pieces are placed in the niches provided on the counterweight in order to fix the counterweight-tub connection.
  • the fixing pieces are fixed to the ends of the bosses in the niches by vibration welding or by using one of the plastic welding methods such as spin, ultrasonic, laser, infrared, or hot plate welding, thereby enabling the counterweight to be permanently fastened on the tub.
  • At least one plastic welding protrusion is disposed at the region where the fixing piece joins the boss, reinforcing the welding connection.
  • centering protrusions are provided in the niche on the counterweight, enabling seating the fixing piece in the niche concentrically with the boss.
  • a screw orifice is provided in the fixing piece and in the boss, enabling reinforcing the fixing piece-boss connection by means of a screw.
  • Figure 1 is a schematic view of the washer-dryer of the invention, on which a counterweight is fastened.
  • Figure 2 is a detail sectional view of the counterweight-tub connection.
  • Figure 3 is a detail sectional view of the counterweight-tub connection in an embodiment of the invention.
  • Figure 4 is a view of the detail A of Figure 3.
  • Figure 5 is a detail sectional view of the counterweight-tub connection in another embodiment of the invention.
  • Figure 6 is a view of the detail B of Figure 5.
  • the washer-dryer (1) comprises a drum (12) in which laundry is placed, a tub (2) made of plastic material, in which the drum (12) moves, at least one counterweight (3) preferably made of concrete material, helping damping the forces acting during operation by increasing the inertia of the tub (2), one or more bosses (4) provided on the front wall of the tub (2), produced integrally with the tub (2) by plastic injection, enabling mounting the counterweight (3) to the tub (2), at least one mounting bore (5) provided on the counterweight (3), through which the boss (4) passes, and at least one niche (6) opened on the counterweight (3) in alignment with the boss (4), joining with the mounting bore (5) and wider than the mounting bore (5).
  • the washer-dryer (1) of the invention comprises at least one fixing piece (7) made of plastic material, seated in the niche (6), fixed ton the end of the boss (4) extending from the mounting bore (5) to the niche (6) by plastic welding, and enabling the counterweight (3) to be permanently fastened on the tub (2).
  • the bosses (4) on the tub (2) are inserted in the mounting bores (5) provided on the counterweight (3) and the counterweight (3) is seated on the tub (2).
  • Each one of the bosses (4) extends from the mounting bore (5) towards the niche (6) by plugging into the counterweight (3).
  • the plastic fixing piece (7) is seated to the niche (6), and is also fastened on the end of the boss (4) such that it cannot be removed unless damaged.
  • the counterweight (3) is fastened on the tub (2) without space and elastically, preventing the counterweight (3) from coming loose on the tub (2) in time and thus causing noise.
  • the washer-dryer (1) comprises at least one plastic welding protrusion (8) provided at the connection region of the fixing piece (7) and the boss (4), extending from the fixing piece (7) into the boss (4) and/or from the boss (4) into the fixing piece (7), and reinforcing the plastic welding connection between the fixing piece (7) and the boss (4) by increasing the surface area of the connection region ( Figures 3, and 4).
  • the washer-dryer (1) comprises at least one centering protrusion (9) provided in the niche (6) on the counterweight (3) on the resting surface of the fixing piece (7), enabling the fixing piece (7) to be seated in the niche (6) concentrically with the boss (4) ( Figure 5, and 6).
  • the washer-dryer (1) comprises at least one screw orifice (11) provided in the fixing piece (7) and in the boss (4), enabling reinforcing the fixing piece (7) - boss (4) connection and therefore the counterweight (3) - tub (2) connection by means of a screw (10) as an additional reinforcement to the plastic welding fixing the fixing piece (7) to the boss (4) ( Figures 3 to 6).
  • the fixing piece (7) is fastened on the boss (4) on the tub, (2) by using one of the plastic welding methods such as spin, ultrasonic, hot plate, laser, infrared or vibration welding.
  • the fixing piece (7) is produced integrally with the tub (2) in the same plastic injection mold, is separated from the tub (2) by being broken after plastic injection, and is fastened on the boss (4) by plastic welding method after the counterweight (3) is mounted to the tub (2).
  • the fixing piece (7) is fastened on the bosses (4) provided on the tub (2) by over injection.
  • the fixing piece (7) is produced by injecting plastic material into the niche (6) on the counterweight (3), and is also fastened at the end of the boss (4) extending into the niche (6).
  • the plastic fixing piece (7) enables the counterweight (3) to be fastened on the tub (2) without space and by an elastic connection method.
  • the counterweight (3) is prevented from untighten in time and the washer-dryer (1) is prevented from operating loudly.

Landscapes

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

Abstract

The present invention relates to a washer-dryer (1) comprising a drum (12) in which laundry is placed, a tub (2) made of plastic material, in which the drum (12) moves, at least one counterweight (3) preferably made of concrete material, one or more bosses (4) provided on the tub (2), produced integrally with the tub (2) by plastic injection, enabling mounting the counterweight (3) to the tub (2), at least one mounting bore (5) provided on the counterweight (3), through which the boss (4) passes, and a niche (6) opened on the counterweight (3) in alignment with the boss (4), joined to the mounting bore (5) and wider than the mounting bore (5). At least one fixing piece (7) made of plastic is fixed to the end of the boss (4) by plastic welding and extends from the mounting bore (5) to the niche (6). This enables the counterweight (3) to be permanently fastened to the tub (2).

Description

WASHER-DRYER COUNTERWEIGHT CONNECTION
The present invention relates to fastening a counterweight on a tub used in a washer-dryer.
In washing machines, it is known to use concrete counterweights fastened on a plastic tub to stabilize the loads occurring during operation. In general, an upper counterweight is placed on the upper portion, and a front counterweight is placed on the front portion of the plastic tub, and, if required, an additional counterweight is fastened on a third region other than the upper and the front portions of the tub. The counterweight is screwed after being mounted on the plastic extensions called the “bosses” provided generally on the tub. In mass production, apparatuses applying torque to the screw and systems controlling screwing torques are used in the process of fastening the counterweight. In general, a tensile force is applied on plastic by the screw connections formed on the plastic material, or the plastic extension is widened by being forced from within by the screw, thereby enabling the counterweight to stay fixed on the tub. In case of fixing performed by widening the plastic extensions, loads form in tensioning direction around the holes engaging the plastic extensions of the concrete counterweight, and this leads to formation of fissures on the concrete. Size changes in the mounting bore of the counterweight and deformations on the plastic extensions likely to occur in time, decrease the value of the force fixing the counterweight. In such a case, the counterweight begins coming loose, increases its movement amplitude by making room for itself on the plastic extensions in time, and causes the operating noise to increase. In the state of the art, a screw's own pre-tension is utilized to provide a pre-tensioned connection so as to inhibit the counterweight from coming loose, or the desired pre-tension is provided by a spring washer.
The international patent application no. WO 2014 007 764 (A1) discloses joining a coupling member placed in the counterweight used in a washing machine, with the tub.
The European patent application no. EP 1 426 477 (A2) discloses a snap-fit connection between a counterweight and tub used in a washing machine.
The international patent application no. WO 2007 129 353 (A1) relates to a system for fixing to a tub, a counterweight used in a washing machine.
The aim of the present invention is to realize a washer-dryer in which a counterweight is enabled to be fastened elastically and without space on a tub, and is prevented from untighten and coming loose in time.
In the washer-dryer realized to achieve the aim of the present invention, after mounting the counterweight on the bosses provided on the plastic tub, plastic fixing pieces are placed in the niches provided on the counterweight in order to fix the counterweight-tub connection. The fixing pieces are fixed to the ends of the bosses in the niches by vibration welding or by using one of the plastic welding methods such as spin, ultrasonic, laser, infrared, or hot plate welding, thereby enabling the counterweight to be permanently fastened on the tub.
In an embodiment of the invention, at least one plastic welding protrusion is disposed at the region where the fixing piece joins the boss, reinforcing the welding connection.
In another embodiment of the invention, centering protrusions are provided in the niche on the counterweight, enabling seating the fixing piece in the niche concentrically with the boss.
In another embodiment of the invention, a screw orifice is provided in the fixing piece and in the boss, enabling reinforcing the fixing piece-boss connection by means of a screw.
The washer-dryer realized to achieve the aims of the present invention is illustrated in the accompanying drawings, wherein:
Figure 1 is a schematic view of the washer-dryer of the invention, on which a counterweight is fastened.
Figure 2 is a detail sectional view of the counterweight-tub connection.
Figure 3 is a detail sectional view of the counterweight-tub connection in an embodiment of the invention.
Figure 4 is a view of the detail A of Figure 3.
Figure 5 is a detail sectional view of the counterweight-tub connection in another embodiment of the invention.
Figure 6 is a view of the detail B of Figure 5.
The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.
  1. Washer-dryer
  2. Tub
  3. Counterweight
  4. Boss
  5. Mounting bore
  6. Niche
  7. Fixing piece
  8. Plastic welding protrusion
  9. Centering protrusion
  10. Screw
  11. Screw orifice
  12. Drum
The washer-dryer (1) comprises a drum (12) in which laundry is placed, a tub (2) made of plastic material, in which the drum (12) moves, at least one counterweight (3) preferably made of concrete material, helping damping the forces acting during operation by increasing the inertia of the tub (2), one or more bosses (4) provided on the front wall of the tub (2), produced integrally with the tub (2) by plastic injection, enabling mounting the counterweight (3) to the tub (2), at least one mounting bore (5) provided on the counterweight (3), through which the boss (4) passes, and at least one niche (6) opened on the counterweight (3) in alignment with the boss (4), joining with the mounting bore (5) and wider than the mounting bore (5).
The washer-dryer (1) of the invention comprises at least one fixing piece (7) made of plastic material, seated in the niche (6), fixed ton the end of the boss (4) extending from the mounting bore (5) to the niche (6) by plastic welding, and enabling the counterweight (3) to be permanently fastened on the tub (2).
While fastening the concrete counterweight (3) on the tub (2), the bosses (4) on the tub (2) are inserted in the mounting bores (5) provided on the counterweight (3) and the counterweight (3) is seated on the tub (2). Each one of the bosses (4) extends from the mounting bore (5) towards the niche (6) by plugging into the counterweight (3). The plastic fixing piece (7) is seated to the niche (6), and is also fastened on the end of the boss (4) such that it cannot be removed unless damaged. The counterweight (3) is fastened on the tub (2) without space and elastically, preventing the counterweight (3) from coming loose on the tub (2) in time and thus causing noise.
In an embodiment of the invention, the washer-dryer (1) comprises at least one plastic welding protrusion (8) provided at the connection region of the fixing piece (7) and the boss (4), extending from the fixing piece (7) into the boss (4) and/or from the boss (4) into the fixing piece (7), and reinforcing the plastic welding connection between the fixing piece (7) and the boss (4) by increasing the surface area of the connection region (Figures 3, and 4).
In another embodiment of the invention, the washer-dryer (1) comprises at least one centering protrusion (9) provided in the niche (6) on the counterweight (3) on the resting surface of the fixing piece (7), enabling the fixing piece (7) to be seated in the niche (6) concentrically with the boss (4) (Figure 5, and 6).
In another embodiment of the invention, the washer-dryer (1) comprises at least one screw orifice (11) provided in the fixing piece (7) and in the boss (4), enabling reinforcing the fixing piece (7) - boss (4) connection and therefore the counterweight (3) - tub (2) connection by means of a screw (10) as an additional reinforcement to the plastic welding fixing the fixing piece (7) to the boss (4) (Figures 3 to 6).
After mounting the counterweight (3), the fixing piece (7) is fastened on the boss (4) on the tub, (2) by using one of the plastic welding methods such as spin, ultrasonic, hot plate, laser, infrared or vibration welding.
In another embodiment of the invention, the fixing piece (7) is produced integrally with the tub (2) in the same plastic injection mold, is separated from the tub (2) by being broken after plastic injection, and is fastened on the boss (4) by plastic welding method after the counterweight (3) is mounted to the tub (2).
In another embodiment of the invention, the fixing piece (7) is fastened on the bosses (4) provided on the tub (2) by over injection. The fixing piece (7) is produced by injecting plastic material into the niche (6) on the counterweight (3), and is also fastened at the end of the boss (4) extending into the niche (6).
The plastic fixing piece (7) enables the counterweight (3) to be fastened on the tub (2) without space and by an elastic connection method. The counterweight (3) is prevented from untighten in time and the washer-dryer (1) is prevented from operating loudly.

Claims (7)

  1. A washer-dryer (1) comprising a drum (12) in which laundry is placed, a tub (2) made of plastic material, in which the drum (12) moves, at least one counterweight (3), one or more bosses (4) provided on the tub (2), produced integrally with the tub (2) by plastic injection, enabling mounting the counterweight (3) to the tub (2), at least one mounting bore (5) provided on the counterweight (3), through which the boss (4) passes, and at least one niche (6) opened on the counterweight (3) in alignment with the boss (4), joining with the mounting bore (5), characterized by at least one fixing piece (7) made of plastic material, seated in the niche (6), fixed by plastic welding on the end of the boss (4) extending from the mounting bore (5) to the niche (6), and enabling the counterweight (3) to be permanently fastened on the tub (2).
  2. A washer-dryer (1) according to claim 1, characterized by, at least one plastic welding protrusion (8) provided on the connection region of the fixing piece (7) and the boss (4), extending from the fixing piece (7) into the boss (4) and/or from the boss (4) into the fixing piece (7), and reinforcing the plastic welding connection between the fixing piece (7) and the boss (4).
  3. A washer-dryer (1) according to claim 1, characterized by at least one centering protrusion (9) provided in the niche (6) on the counterweight (3) on the resting surface of the fixing piece (7), enabling the fixing piece (7) to be seated in the niche (6) concentrically with the boss (4).
  4. A washer-dryer (1) according to any one of the claims 1 to 3, characterized by at least one screw orifice (11) provided in the fixing piece (7) and in the boss (4), enabling reinforcing the fixing piece (7) - boss (4) connection by means of a screw (10).
  5. A washer-dryer (1) according to any one of the claims 1 to 3, characterized by the fixing piece (7) fastened on the boss (4) on the tub (2) by vibration welding or by using one of the plastic welding methods such as spin, ultrasonic, laser, infrared or hot plate welding.
  6. A washer-dryer (1) according to any one of the claims 1 to 3, characterized by the fixing piece (7) produced integrally with the tub (2) in the same plastic injection mold, separated from the tub (2) by being broken after plastic injection, and fastened on the boss (4) by plastic welding after the counterweight (3) is mounted to the tub (2).
  7. A washer-dryer (1) according to any one of the claims 1 to 3, characterized by the fixing piece (7) produced by over injection on the bosses (4) on the tub (2).
PCT/EP2018/062733 2017-06-06 2018-05-16 Washer-dryer counterweight connection Ceased WO2018224264A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201708309 2017-06-06
TRA2017/08309 2017-06-06

Publications (1)

Publication Number Publication Date
WO2018224264A1 true WO2018224264A1 (en) 2018-12-13

Family

ID=62186462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/062733 Ceased WO2018224264A1 (en) 2017-06-06 2018-05-16 Washer-dryer counterweight connection

Country Status (1)

Country Link
WO (1) WO2018224264A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1426477A2 (en) 2002-11-06 2004-06-09 BSH Bosch und Siemens Hausgeräte GmbH Frontal closure for plastic tub for a domestic washing machine
DE102006010788A1 (en) * 2006-03-08 2007-09-13 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance with liquor container, e.g. washing machine, has the liquor container fixed to ballast weight by welding together plastics regions, including projections to be shape-fitted to flat regions
WO2007129353A1 (en) 2006-05-04 2007-11-15 Meccanica Generale S.R.L. System used to fix concrete counterweights on the outside of tanks for washers, washer/dryer combos and similar appliances.
WO2009118220A1 (en) * 2008-03-27 2009-10-01 Meccanica Generale S.R.L. Anchoring system of counterweights for washers and washer/dryer combos
EP2551397A2 (en) * 2011-07-25 2013-01-30 Samsung Electronics Co., Ltd. A washing machine having enhanced coupling structure of a weight balance and assembly method of the same
WO2014007764A1 (en) 2012-07-03 2014-01-09 Armeton D.O.O. Washing machine tub and inertia counterweight assembly
DE102014224761B3 (en) * 2014-12-03 2016-03-31 BSH Hausgeräte GmbH Laundry care device with a fastening element

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1426477A2 (en) 2002-11-06 2004-06-09 BSH Bosch und Siemens Hausgeräte GmbH Frontal closure for plastic tub for a domestic washing machine
DE102006010788A1 (en) * 2006-03-08 2007-09-13 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance with liquor container, e.g. washing machine, has the liquor container fixed to ballast weight by welding together plastics regions, including projections to be shape-fitted to flat regions
WO2007129353A1 (en) 2006-05-04 2007-11-15 Meccanica Generale S.R.L. System used to fix concrete counterweights on the outside of tanks for washers, washer/dryer combos and similar appliances.
WO2009118220A1 (en) * 2008-03-27 2009-10-01 Meccanica Generale S.R.L. Anchoring system of counterweights for washers and washer/dryer combos
EP2551397A2 (en) * 2011-07-25 2013-01-30 Samsung Electronics Co., Ltd. A washing machine having enhanced coupling structure of a weight balance and assembly method of the same
WO2014007764A1 (en) 2012-07-03 2014-01-09 Armeton D.O.O. Washing machine tub and inertia counterweight assembly
DE102014224761B3 (en) * 2014-12-03 2016-03-31 BSH Hausgeräte GmbH Laundry care device with a fastening element

Similar Documents

Publication Publication Date Title
EP2260137B1 (en) Anchoring system of counterweights for washers and washer/dryer combos
AU2007261845A1 (en) Stator of motor and washing machine having the same
US20090229317A1 (en) Domestic Appliance Having A Detergent Solution Container
CN107354696B (en) Laundry drying appliance with heat pump and corresponding drive
US20170045078A1 (en) Balance weight connection screw
WO2018224264A1 (en) Washer-dryer counterweight connection
KR20200134895A (en) Washing machine
CN101553969A (en) Stator of electric motor and washing machine having the same
WO2006064429A1 (en) A washer / dryer
WO2012062674A1 (en) Balance weight connection screw
CN212601348U (en) Packaging and fixing device for drum washing machine and drum washing machine
KR20060120918A (en) Damper pin installation structure of drum washing machine
KR200397571Y1 (en) Balance-weight for drum washer
EP3963129B1 (en) A laundry washer or washer/dryer comprising a shock absorber
KR101278158B1 (en) Washing machine
EP3947802B1 (en) A washing machine comprising a flow regulating lifter
EP3261508A1 (en) Household appliance with an improved top cover assembling
KR101050098B1 (en) Balance weight coupling structure of tub for drum washing machine
KR101377939B1 (en) Washer
WO2025048745A1 (en) A laundry washer or laundry washer/dryer comprising a shock absorber bracket
CN112538736B (en) Installation structure and clothing processing equipment
KR101737957B1 (en) Extension construction apparatus of apartment house
KR20060036741A (en) Tub fixing structure of drum washing machine
KR101716173B1 (en) Laundry treating apparatus
HK1190763A1 (en) Packing spacer for washing machines with preset collapsible portion

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18725199

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18725199

Country of ref document: EP

Kind code of ref document: A1