EP1964959A2 - Verbindungsmechanismus für ein Gegengewicht - Google Patents

Verbindungsmechanismus für ein Gegengewicht Download PDF

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Publication number
EP1964959A2
EP1964959A2 EP07120220A EP07120220A EP1964959A2 EP 1964959 A2 EP1964959 A2 EP 1964959A2 EP 07120220 A EP07120220 A EP 07120220A EP 07120220 A EP07120220 A EP 07120220A EP 1964959 A2 EP1964959 A2 EP 1964959A2
Authority
EP
European Patent Office
Prior art keywords
connection
balance weight
slot
tub
hole
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
EP07120220A
Other languages
English (en)
French (fr)
Other versions
EP1964959A3 (de
EP1964959B1 (de
Inventor
Yetkin Telci
Hasan Dereli
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret 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=38189486&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1964959(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP1964959A2 publication Critical patent/EP1964959A2/de
Publication of EP1964959A3 publication Critical patent/EP1964959A3/de
Application granted granted Critical
Publication of EP1964959B1 publication Critical patent/EP1964959B1/de
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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 strengthening the manner of connecting the balance weight to the tub in washing machines.
  • washing drum in washing machines exerts different dynamic loads on machine components during the washing and spinning phases, and especially that the centrifugal forces generated at high-speed spinning phases cause machine components to vibrate and to failures based on such vibrations.
  • high noise levels produced during the machine's operation do disturb the user.
  • the present invention relates to strengthening the assembly of the balance weight exposed to various dynamic loads to the tub, by making use of various numbers of expanding-type and fixed-type connection slots together in washing machines.
  • this invention it has been envisaged to use expanding-type and fixed-type connection slots together on the same tub and balance weight in order to reduce the slacking problems of connections in high-spin washing machines.
  • the balance weights are exposed to various dynamic loads at working periods with different speeds in time.
  • the use of fixed-type and expanding-type connection slots within the same construction in the connection of balance weight and tub provides resistance against dynamic loads.
  • the balance weights are exposed to variable dynamic loads which are axial (coincide with or parallel to the drum's axis of rotation) and radial (perpendicular to the drum's axis of rotation) with respect to the drum.
  • Such forces increase as the machine's spin rate is raised.
  • Special connection types are developed for this reason. Expanding-type slots have the feature of becoming radially-expanded to a certain degree, when screw-like fixation means are introduced into themselves. This expansion creates a throughout force on the lateral surfaces of the connection slot, the inner surfaces of holes in the balance weight, so that the slot's radial movement with respect to the hole is restricted. In this connection method, however, the resistance against axial forces is relatively lower.
  • connection manner formed against axial forces corresponds to the type of connection that is called the "fixed" type.
  • a screw introduced into a slot fixes the balance weight and tub on the axial direction.
  • the fixed-type connection slot provides a relatively smaller resistance against radial loads.
  • both expanding-type and fixed-type connection slots are employed in connection points of the tub and balance weights to increase the resistance against both radial and axial loads.
  • Washing machines are exposed to several dynamic loads, with respect to both the operation principle and construction.
  • Balance weights are assembled to the tub for maintaining the machine's balance during operation.
  • balance weights become exposed to radial (or lateral) and axial loads on the connection points with tubs in long term, due to dynamic loads created during operation.
  • the aim of the present invention is to provide a reliable and sound connection and to avoid any such loosening problems of such connections in long term for high-spin washing machines. For this reason, it is hereby aimed to make use of expanding-type and fixed-type connection slots together in connection points of the tub and balance weights, in order to increase the resistance against both radial and axial loads in washing machines.
  • FIG 1 is a general view of the interior of a washing machine.
  • the tub (20) and balance weight (30) connection system according to the present invention is shown in an assembled form and in a disassembled form in figures 1 and 8 , respectively.
  • the washing drum rotating within the tub in high spin rates exerts dynamic loads on the tub in varying directions and magnitudes. So the tub must be properly fixed in order to prevent these loads from causing excessive vibration and noise in the machine. Therefore, it becomes necessary to support the tub by means of various balance weights. In this case, however, the connection manner of the tub and balance weights becomes crucial.
  • it is aimed to embody the connection system between the tub (20) and balance weight (30) so as to resist against both radial and axial loads.
  • FIG 2 is a front view of the tub.
  • the fixed-type connection slots (21) and the expanding-type connection slots (24) are provided on the front side of the tub (or at the section where the balance weights are to be fastened). Both types of connections slots have cylindrical bodies in the form of a projection extending outwardly. There is provided a hole coincident with the central axis of this cylindrical form and screw-like fixation means are introduced into such hole.
  • a front view of an exemplary balance weight (30) is given.
  • a set of connection holes (31) and another set of connection holes (34) are provided on the balance weight (30) so as to coincide with the fixed-type connection slots (21) and the expanding-type connection slots (24), respectively.
  • each fixed-type connection slot (21) and each expanding-type connection slot (24) become introduced into respective connection holes (31 and 34).
  • Figures 4 and 5 are cross-sectional views of the expanding-type connection slot (24) prior to and after assembly, respectively.
  • the expanding-type connection slot (24) has a cylindrical form extending out of the tub (20), whereas a screw-like fixation means (26) is introduced into a hole (28) that is coincident with the central axis of this cylindrical formation.
  • On this connection slot (24) is provided at least one cleavage (27) (illustrated in Figure 9 ) which starts from the said connection hole (28) and extends up to the exterior of the slot.
  • the diameter of connection means (26) employed in the expanding-type connection slot (24) is somewhat larger than the diameter of the said hole (28).
  • connection slot (24) while the connection means (26) is assembled to this hole (28), the cleavage (27) on the slot (24) allows the latter (24) to expand laterally (i.e. to enlarge its outer diameter). Because of this expansion, the external surface of the slot (24) leans against the internal surface of the connection hole (34) of the balance weight, in which it (24) exists. Thus, the connection slot (24) on the tub becomes centered with the connection hole (34) on the balance weight. In this connection manner, the lateral (or radial) movement of the slot (24) within the hole (34) is avoided. Thanks to this feature, the loads arising from the drum's rotation are prevented from moving the tub on the lateral direction.
  • connection type is not resistant against the loads exerted on the axial direction (on the direction of the slot's central axis).
  • the spacer (25) shown in figures 4 and 5 avoids the tub's (20) axial movement to a certain degree with respect to the balance weight (30) by becoming tightened on the slot's (24) outer surface, on the surface it settles on the balance weight (30), it does not provide a tight connection in this direction. For this reason, another type of connection becomes necessary for providing axial resistance for the tub's (20) connection with the balance weight (30).
  • FIGs 6 and 7 are cross-sectional views of the fixed-type connection slot (21) prior to and after assembly, respectively.
  • the fixed-type connection slot (21) has a cylindrical form extending out of the tub (20), whereas a screw-like fixation means (23) is introduced into a hole (29) that is coincident with the central axis of this cylindrical formation.
  • This connection slot (21) is embodied so that no expansion or enlargement can occur. For this reason, once the connection means (23) are attached to the hole (20) on the slot (21) (illustrated in Figure 7 ), they avoid the axial movement rather than the lateral movement- of the slot (21) with respect to the connection hole (31).
  • connection means (23) exerts an axial force to the balance weight (30) by pulling the slot (21) towards itself. Thanks to this feature, the loads arising from the drum's rotation are prevented from moving the tub (20) on the axial direction with respect to the balance weight (30).
  • a spacer (22) can also be used in this connection manner so as to become tightened between the connection element (23) and the balance weight (30).
  • lateral and axial movements of the tub (20) with respect to the balance weight are avoided during the drum's rotation, by using at least one fixed-type connection slot (21), together with at least one expanding-type connection slot (24) on the tub (20).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Rotary Pumps (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP07120220A 2007-02-27 2007-11-08 Verbindungsmechanismus für ein Gegengewicht Revoked EP1964959B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2007/01223U TR200701223U (tr) 2007-02-27 2007-02-27 Denge ağırlığı bağlantısı.

Publications (3)

Publication Number Publication Date
EP1964959A2 true EP1964959A2 (de) 2008-09-03
EP1964959A3 EP1964959A3 (de) 2008-09-17
EP1964959B1 EP1964959B1 (de) 2010-07-28

Family

ID=38189486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120220A Revoked EP1964959B1 (de) 2007-02-27 2007-11-08 Verbindungsmechanismus für ein Gegengewicht

Country Status (4)

Country Link
EP (1) EP1964959B1 (de)
AT (1) ATE475738T1 (de)
DE (1) DE602007008049D1 (de)
TR (1) TR200701223U (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103103722A (zh) * 2011-10-21 2013-05-15 日立空调·家用电器株式会社 滚筒式洗衣机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201611761A2 (tr) 2016-08-20 2016-12-21 Met Ileri Teknoloji Sistemleri Muehendislik Imalat Ithalat Ve Ihracat Ticaret Ltd Sirketi Çamaşır Makinesi Denge Ağırlıklarını Kazan Gövdesine Sabitleyen Değişken Ölçülü Aparat

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346622A (en) 1999-01-25 2000-08-16 Electrolux Zanussi Elettrodome Clothes washing machine with counterbalanced tub

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69730070T2 (de) * 1996-03-21 2005-01-20 BSH Bosch und Siemens Hausgeräte GmbH Verbindungsvorrichtung für das Gegengewicht einer Waschmaschine
DE10215254A1 (de) * 2002-04-07 2003-10-16 Wirthwein Ag Ballastgewicht für Waschmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346622A (en) 1999-01-25 2000-08-16 Electrolux Zanussi Elettrodome Clothes washing machine with counterbalanced tub

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103103722A (zh) * 2011-10-21 2013-05-15 日立空调·家用电器株式会社 滚筒式洗衣机
CN103103722B (zh) * 2011-10-21 2016-02-03 日立空调·家用电器株式会社 滚筒式洗衣机

Also Published As

Publication number Publication date
DE602007008049D1 (de) 2010-09-09
ATE475738T1 (de) 2010-08-15
EP1964959A3 (de) 2008-09-17
TR200701223U (tr) 2007-05-21
EP1964959B1 (de) 2010-07-28

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