EP0725179B1 - Improvement in the unbalance preventing arrangement of the drum of a clothes washing machine - Google Patents
Improvement in the unbalance preventing arrangement of the drum of a clothes washing machine Download PDFInfo
- Publication number
- EP0725179B1 EP0725179B1 EP96100061A EP96100061A EP0725179B1 EP 0725179 B1 EP0725179 B1 EP 0725179B1 EP 96100061 A EP96100061 A EP 96100061A EP 96100061 A EP96100061 A EP 96100061A EP 0725179 B1 EP0725179 B1 EP 0725179B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- washing machine
- hollow bodies
- clothes washing
- machine according
- 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.)
- Expired - Lifetime
Links
- 238000005406 washing Methods 0.000 title claims description 16
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 230000001464 adherent effect Effects 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
- D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
Definitions
- the present invention refers to a clothes washing machine, in particular of the household type, provided with a washload holding drum that has an improved dynamic balancing arrangement.
- the rotatable drum includes a generally cylindrical outer wall, a first disk and a second disk.
- the first disk is provided for forming a first end wall of the drum and includes a balancing means including a plurality of concentric annular chambers.
- the second disk is provided for forming a second end wall of the drum, opposite to the first end wall, and includes balancing means with a plurality of concentric annular chambers.
- the present invention substantially consists in providing a plurality of annular hollow bodies having different diameters and containing a respective plurality of movable balancing weights, in subdividing said plurality of hollow bodies into two distinct assemblies, and in applying the hollow bodies of each such assembly against a respective base of the cylinder formed by the drum, the hollow bodies of each such assembly being therefore substantially coplanar with each other and coaxial with the axis of the drum.
- a washload holding drum made preferably of metal and of a generally per sè known type, which substantially consists of a rigid structure formed by a cylindrical peripheral mantle 1 and two bases 2 and 3, one of which carries the spider member and the related shaft 4, while the other one forms the loading opening 5.
- each one of such bases a respective assembly 6, 7 is applied, which is formed by a corresponding plurality of distinct hollow bodies 8, such as this is shown in Figure 1.
- a second improvement as illustrated in Figures 6 and 7, relies on the fact that the hollow bodies comprised in at least one of said assemblies are provided by joining together two substantially symmetrical parts 9, 10, each one of which is formed by a plurality of co-planar, concentric circular grooves 11 that are open toward the same side in an orthogonal direction with respect to the co-planarity plane.
- Such grooves are appropriately and partially filled with movable balancing masses whose weight, size, shape and distribution can be freely selected by anyone skilled in the art in accordance with the desired results and the acceptable extent of trade-offs.
- said two complementary parts 9, 10 are joined together to form a single member.
- the hollow bodies of said assemblies are contiguous, in the sense that the outer periphery of the inner annular hollow body substantially coincides with the inner periphery of the adjoining outer annular hollow body.
- said hollow bodies are separated from each other by a single common intermediate wall.
- each one of said brackets is applied on to the outer cylindrical surface of the drum with a parallel orientation with respect to the axis thereof, while their respective gripping members 16 are caused to engage, thanks to their claw-like configuration, against corresponding pairs of frontally opposing sectors that are respectively arranged on the outer edges 18 of said assemblies 6, 7.
- said brackets form the mutual clamping members of said assemblies, while not actually engaging the drum in any structural manner, so as to avoid passing on to it the stresses deriving from the attachment of said assemblies and, therefore, putting any resulting mechanical load on to it.
- engaging elements 18 in view of boosting the stability of said brackets it is advantageous for engaging elements 18 to be provided which protrude from their intermediate zone and are capable of engaging the underlying surface of the drum without passing on any excessive or unbalanced strain to it.
- a manufacturability improvement is furthermore obtained if the parts making up each assembly are made in a single-piece or integral construction and are then joined, upon insertion of the movable balancing weights, using a specular assembly technique.
- a further optimization of the present invention refers to the possible integration of the inner parts of said assemblies 6, 7 with the drum which they are associated with.
- Such an integration enables considerable advantages of a constructional and economic nature to be obtained and consists in making, using readily available techniques, both the drum and the inner parts of said assemblies formed by the related hollow bodies in a single-piece or integral construction.
- such an improvement is implemented through the use of an appropriate plastic material that is adapted to be processed for making both the drum and said assemblies, thereby further giving the opportunity of avoiding the presence and the assembly of the afore cited brackets, with resulting considerable advantages in terms of costs and constructional simplification.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Centrifugal Separators (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1995PN000006U IT238832Y1 (it) | 1995-02-01 | 1995-02-01 | Lavabiancheria con cesto antisbilanciamento perfezionato |
ITPN950006U | 1995-02-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0725179A1 EP0725179A1 (en) | 1996-08-07 |
EP0725179B1 true EP0725179B1 (en) | 2000-07-05 |
Family
ID=11394984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96100061A Expired - Lifetime EP0725179B1 (en) | 1995-02-01 | 1996-01-04 | Improvement in the unbalance preventing arrangement of the drum of a clothes washing machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0725179B1 (it) |
JP (1) | JPH08252391A (it) |
CA (1) | CA2168385A1 (it) |
DE (1) | DE69609090T2 (it) |
ES (1) | ES2150023T3 (it) |
IT (1) | IT238832Y1 (it) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7827834B2 (en) | 2005-09-30 | 2010-11-09 | Lg Electronics Inc. | Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same |
US7841220B2 (en) | 2005-09-30 | 2010-11-30 | Lg Electronics Inc. | Drum-type washing machine |
US7930910B2 (en) | 2002-12-27 | 2011-04-26 | Lg Electronics Inc. | Drum type washing machine |
US8087267B2 (en) | 2002-12-27 | 2012-01-03 | Lg Electronics Inc. | Drum type washing machine |
USRE43625E1 (en) | 2006-03-29 | 2012-09-04 | Lg Electronics Inc. | Drum type washing machine |
US8429938B2 (en) | 2004-07-20 | 2013-04-30 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69608876T3 (de) † | 1995-12-28 | 2006-05-24 | Samsung Electronics Co., Ltd., Suwon | Trommelmaschine mit Auswuchtvorrichtungen |
JPH1119384A (ja) * | 1997-06-26 | 1999-01-26 | Samsung Electron Co Ltd | ドラム式洗濯機用バランサー内にボールを供給するための装置 |
MY129598A (en) * | 1997-06-26 | 2007-04-30 | Samsung Electronics Co Ltd | Manufacturing methods and apparatus for removing residual water from a ball balancer of a drum washing machine. |
KR100587307B1 (ko) * | 2004-06-09 | 2006-06-08 | 엘지전자 주식회사 | 드럼세탁기 및 드럼세탁기의 드럼 |
EP2354293B1 (en) * | 2006-06-01 | 2017-11-01 | Samsung Electronics Co., Ltd. | Washing machine having balancer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1213067A (fr) * | 1957-11-08 | 1960-03-29 | Frame | Machine à laver |
DE1912481U (de) * | 1961-07-24 | 1965-03-18 | Siemens Elektrogeraete Gmbh | Einrichtung zum schleudern von wasche mit elastischer aufhaengung des trommelaggregats. |
JPS5351671A (en) * | 1976-10-20 | 1978-05-11 | Hitachi Ltd | Drum type washing machine |
GB1598399A (en) * | 1977-06-02 | 1981-09-16 | Hitachi Ltd | Drum type automatic electric washing machine |
US5345792A (en) * | 1992-12-28 | 1994-09-13 | Whirlpool Corporation | Balancer for an automatic washer |
ITPN940005A1 (it) * | 1994-01-28 | 1995-07-28 | Zanussi Elettrodomestici | Lavabiancheria con dispositivo perfezionato di bilanciamento dinamico |
-
1995
- 1995-02-01 IT IT1995PN000006U patent/IT238832Y1/it active IP Right Grant
-
1996
- 1996-01-04 ES ES96100061T patent/ES2150023T3/es not_active Expired - Lifetime
- 1996-01-04 EP EP96100061A patent/EP0725179B1/en not_active Expired - Lifetime
- 1996-01-04 DE DE69609090T patent/DE69609090T2/de not_active Expired - Fee Related
- 1996-01-30 CA CA002168385A patent/CA2168385A1/en not_active Abandoned
- 1996-02-01 JP JP8016885A patent/JPH08252391A/ja active Pending
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8387421B2 (en) | 2002-12-27 | 2013-03-05 | Lg Electronics Inc. | Drum-type washing machine |
US7930910B2 (en) | 2002-12-27 | 2011-04-26 | Lg Electronics Inc. | Drum type washing machine |
US8336339B2 (en) | 2002-12-27 | 2012-12-25 | Lg Electronics Inc. | Drum type washing machine |
US8087267B2 (en) | 2002-12-27 | 2012-01-03 | Lg Electronics Inc. | Drum type washing machine |
US8156770B2 (en) | 2002-12-27 | 2012-04-17 | Lg Electronics, Inc. | Drum type washing machine |
US8322170B2 (en) | 2002-12-27 | 2012-12-04 | Lg Electronics Inc. | Drum-type washing machine |
US8887537B2 (en) | 2002-12-27 | 2014-11-18 | Lg Electronics Inc. | Drum-type washing machine |
US8671719B2 (en) | 2002-12-27 | 2014-03-18 | Lg Electronics Inc. | Drum type washing machine |
US8336340B2 (en) | 2002-12-27 | 2012-12-25 | Lg Electronics Inc. | Drum-type washing machine |
US8302434B2 (en) | 2002-12-27 | 2012-11-06 | Lg Electronics Inc. | Drum-type washing machine |
US8646292B2 (en) | 2002-12-27 | 2014-02-11 | Lg Electronics Inc. | Drum type washing machine |
US8616027B2 (en) | 2002-12-27 | 2013-12-31 | Lg Electronics Inc. | Drum type washing machine |
US8646293B2 (en) | 2002-12-27 | 2014-02-11 | Lg Electronics Inc. | Drum type washing machine |
US8341983B2 (en) | 2002-12-27 | 2013-01-01 | Lg Electronics Inc. | Drum-type washing machine |
US8726702B2 (en) | 2004-07-20 | 2014-05-20 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8783072B2 (en) | 2004-07-20 | 2014-07-22 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8429938B2 (en) | 2004-07-20 | 2013-04-30 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8434334B2 (en) | 2004-07-20 | 2013-05-07 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8677787B2 (en) | 2004-07-20 | 2014-03-25 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8931312B2 (en) | 2004-07-20 | 2015-01-13 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8800326B2 (en) | 2004-07-20 | 2014-08-12 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8887538B2 (en) | 2004-07-20 | 2014-11-18 | Lg Electronics Inc. | Drum-type washing machine and bearing housing structure thereof |
US8671718B2 (en) | 2005-09-30 | 2014-03-18 | Lg Electronics Inc. | Drum-type washing machine |
US7827834B2 (en) | 2005-09-30 | 2010-11-09 | Lg Electronics Inc. | Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same |
US8234890B2 (en) | 2005-09-30 | 2012-08-07 | Lg Electronics Inc. | Drum-type washing machine |
US8225628B2 (en) | 2005-09-30 | 2012-07-24 | Lg Electronics Inc. | Drum-type washing machine |
US8220294B2 (en) | 2005-09-30 | 2012-07-17 | Lg Electronics Inc. | Drum-type washing machine |
US7841220B2 (en) | 2005-09-30 | 2010-11-30 | Lg Electronics Inc. | Drum-type washing machine |
USRE44795E1 (en) | 2006-03-29 | 2014-03-11 | Lg Electronics Inc. | Drum type washing machine |
USRE44674E1 (en) | 2006-03-29 | 2013-12-31 | Lg Electronics Inc. | Drum type washing machine |
USRE44511E1 (en) | 2006-03-29 | 2013-10-01 | Lg Electronics Inc. | Drum type washing machine |
USRE44028E1 (en) | 2006-03-29 | 2013-02-26 | Lg Electronics Inc. | Drum type washing machine |
USRE43625E1 (en) | 2006-03-29 | 2012-09-04 | Lg Electronics Inc. | Drum type washing machine |
Also Published As
Publication number | Publication date |
---|---|
ITPN950006V0 (it) | 1995-02-01 |
JPH08252391A (ja) | 1996-10-01 |
DE69609090D1 (de) | 2000-08-10 |
DE69609090T2 (de) | 2001-03-15 |
EP0725179A1 (en) | 1996-08-07 |
ES2150023T3 (es) | 2000-11-16 |
CA2168385A1 (en) | 1996-08-02 |
ITPN950006U1 (it) | 1996-08-01 |
IT238832Y1 (it) | 2000-11-15 |
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