EP0104475A2 - Laundry washing machine of the top-charging type provided with a counterweight - Google Patents

Laundry washing machine of the top-charging type provided with a counterweight Download PDF

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Publication number
EP0104475A2
EP0104475A2 EP83108538A EP83108538A EP0104475A2 EP 0104475 A2 EP0104475 A2 EP 0104475A2 EP 83108538 A EP83108538 A EP 83108538A EP 83108538 A EP83108538 A EP 83108538A EP 0104475 A2 EP0104475 A2 EP 0104475A2
Authority
EP
European Patent Office
Prior art keywords
counterweight
tub
opening
washing machine
drum
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
EP83108538A
Other languages
German (de)
French (fr)
Other versions
EP0104475A3 (en
EP0104475B1 (en
Inventor
Olindo Regazzo
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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=11238907&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0104475(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT83108538T priority Critical patent/ATE31434T1/en
Publication of EP0104475A2 publication Critical patent/EP0104475A2/en
Publication of EP0104475A3 publication Critical patent/EP0104475A3/en
Application granted granted Critical
Publication of EP0104475B1 publication Critical patent/EP0104475B1/en
Expired legal-status Critical Current

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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
    • 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
    • D06F37/20—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

Definitions

  • the present invention relates to a laundry washing machine of the top-charging type, particularly for domestic use, provided with a counterweight for the dynamic equilibration of the tub-drum assembly of the machine.
  • laundry washing machines of the top-charging type are at present being constructed to have the smallest possible dimensions so as to permit them to be installed in limited spaces.
  • the efficient dynamic equilibration of the tub-drum assembly of laundry washing machines of this type requires the employ of at least one counterweight formed of a material having a high specific weight.
  • This material may be contained in a suitably formed container or may itself be formed to a compact block.
  • the counterweight is generally attached to the outer periphery of the tub at a lower or lateral portion thereof. This manner of mounting the counterweight requires it to be considerably heavy and thus to have relatively great dimensions, so that the accommodation of the counterwieght in a washing machine of reduced dimensions offers considerable difficulties.
  • a laundry washing machine of the top-charging type particularly for domestic use, comprising a tub suspended in a frame of the machine, a drum rotatably mounted in said tub and provided with two spring-biased peripheral doors adapted to partially overlap one another in the closed position, and at least one counterweight of a material having a high specific weight for the dynamic equilibration of the tub-drum assembly, said tub being provided with a top opening giving access to said drum.
  • a laundry washing machine of the above specified type is characterized in that said counterweight is formed with at least one central through-opening and is mounted on the top portion of said tub, so that said through-opening coincides with said access opening and with a charging port formed in the frame of the machine, flexible means being provided for connection to the respective peripheral borders of said counterweight and said charging port.
  • a laundry washing machine of the top-charging type comprising a washing tub 3 suspended within an outer frame 4 by means of a not shown system of upper springs and lower shock absorbers, and a drum 5 rotatably mounted within tub 3 and provided with a peripheral opening 6 adapted to be closed by spring-biased door flaps 7, only one of which is shown in fig. 1, adapted to overlap one another in the closed position.
  • a through-opening 8 Formed in the upper portion of tub 3 is a through-opening 8 giving access to drum 5 for introducing and discharging the laundry into and out of drum 5, respectively.
  • a counterweight 9 formed of a material having a high specific weight, such as cement, baryte or the like, which may be contained within a suitably shaped container or be formed as a compact block of the selected material.
  • Counterweight 9 is formed with at least one central through-opening 10 and with a channel-shaped outer peripheral rim 11 for purposes to be described later.
  • counterweight 9 For mounting counterweight 9 in the laundry washing machine, it is located on the top portion of tub 3 in such a position that its through-opening 10 coincides with a charging port 12 formed in the frame of the machine thereabove, and with.the access opening 8 of the tub. In this position the counterweight is subsequently affixed to the tub of the machine by means of bolts 13 and nuts 14 or equivalent fastener elements.
  • Charging port 12 is surrounded by a frame structure 15 acting as a charging funnel and having a free edge 16 partially projecting into the interior of the machine.
  • a bellows-shaped flexible element 17 Connected between the free edge portion 16 of frame structure 15 and channel-shaped outer peripheral rim 11 of counterweight 9 is a bellows-shaped flexible element 17 for permitting the laundry to be safely introduced into and withdrawn from drum 5.
  • a profiled rigid clamping element 19 is slipped onto the contacting edge portions.
  • the other free edge portion 20 of flexible element 17 is introduced into the channel-shaped edge 11 of counterweight 9 and retained therein by means of an expansible annular member 21.
  • the flexible element 17 may have a different shape and be connected between the charging port and the counterweight in a different manner without thereby leaving the scope of the invention.
  • counterweight 9 is formed with to opposing lateral edge portions 22 partially projecting into opening 10 for being engaged by a hooks 23 provided on the door flaps of the drum, should the latter be rotated with its door flaps accidentally open.
  • the described location of the counterweight on top of the tub of the washing machine results in an upwards displacement of the center of gravity of the tub-drum assembly and thus in a shorter lever arm of the center of gravity with respect to the suspension points of the assembly within the frame of the machine.
  • the dynamic equilibration of the said assembly is achieved by employign a counterweight of the same Material as abobe specified, although of reduced weight, so that the counterweight may be designed with reduced dimensions and formed of a reduced amount of material.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Centrifugal Separators (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

Described is a laundry washing machine of the top-charging tyle, particularly for domestic use, comprising a tub-drum assembly resiliently suspended within a frame, and a counterweight for the dynamic equilibration of the tub-drum assembly. According to the invention, the counterweight is mounted on the top portion of the tub and formed with a central through-opening registering with a charging port in the frame of the machine and an access opening of the tub, a flexible element being connected between said charging port and said central through-opening. The described location of the counterweight permits the weight and dimensions thereof to be considerably reduced as compared to known constructions.

Description

  • The present invention relates to a laundry washing machine of the top-charging type, particularly for domestic use, provided with a counterweight for the dynamic equilibration of the tub-drum assembly of the machine.
  • As generally known, laundry washing machines of the top-charging type are at present being constructed to have the smallest possible dimensions so as to permit them to be installed in limited spaces.
  • The efficient dynamic equilibration of the tub-drum assembly of laundry washing machines of this type requires the employ of at least one counterweight formed of a material having a high specific weight. This material may be contained in a suitably formed container or may itself be formed to a compact block. The counterweight is generally attached to the outer periphery of the tub at a lower or lateral portion thereof. This manner of mounting the counterweight requires it to be considerably heavy and thus to have relatively great dimensions, so that the accommodation of the counterwieght in a washing machine of reduced dimensions offers considerable difficulties.
  • It is therefore an object of the present invention to eliminate this disadvantage by providing a counterweight of the described type which is mounted on the top portion of the tub of the machine adjacent the access opening thereof.
  • The location of the counterweight in this position results in an upwards displacement of the center of gravity of the tub-drum assembly, whereby the lever arm of the center of gravity with respect to the suspension points of the tub-drum assembly within the frame of the machine is correspondingly shortened.
  • This permits a counterweight of reduced weight and dimensions as compared to hitherto employed counterweights to be employed for ensuring an efficient dynamic equilibration of the tub-drum assembly.
  • As a result, there is considerably more space available in the washing machine for mounting the counterweight itself or for installing the various electrical and mechanical components of the machine.
  • In addition,the formation of the counterweight requires a smaller amount of material, with the attendant economical advantages.
  • These and other objects are attained according to the invention by a laundry washing machine of the top-charging type, particularly for domestic use, comprising a tub suspended in a frame of the machine, a drum rotatably mounted in said tub and provided with two spring-biased peripheral doors adapted to partially overlap one another in the closed position, and at least one counterweight of a material having a high specific weight for the dynamic equilibration of the tub-drum assembly, said tub being provided with a top opening giving access to said drum.
  • In accordance with the invention, a laundry washing machine of the above specified type is characterized in that said counterweight is formed with at least one central through-opening and is mounted on the top portion of said tub, so that said through-opening coincides with said access opening and with a charging port formed in the frame of the machine, flexible means being provided for connection to the respective peripheral borders of said counterweight and said charging port.
  • The characteristics of the invention will become more evident from the following description, given by way of a nonlimiting example with reference to the accompanying drawings, wherein:
    • fig. 1 shows a partially sectioned elevational view of a top portion of a laundry washing machine of the top-charging type provided with a counterweight according to the invention, and
    • fig. 2 shows a perspective view of the counterweight according to the invention as applied to the tub-drum assembly of a laundry washing machine of the top-charging type.
  • Shown in figs. 1 and 2 of the drawings is a laundry washing machine of the top-charging type, comprising a washing tub 3 suspended within an outer frame 4 by means of a not shown system of upper springs and lower shock absorbers, and a drum 5 rotatably mounted within tub 3 and provided with a peripheral opening 6 adapted to be closed by spring-biased door flaps 7, only one of which is shown in fig. 1, adapted to overlap one another in the closed position.
  • Formed in the upper portion of tub 3 is a through-opening 8 giving access to drum 5 for introducing and discharging the laundry into and out of drum 5, respectively.
  • For ensuring an efficient dynamic equilibration of the tub-drum assembly 3-5, there is in addition provided a counterweight 9 formed of a material having a high specific weight, such as cement, baryte or the like, which may be contained within a suitably shaped container or be formed as a compact block of the selected material.
  • Counterweight 9 is formed with at least one central through-opening 10 and with a channel-shaped outer peripheral rim 11 for purposes to be described later.
  • For mounting counterweight 9 in the laundry washing machine, it is located on the top portion of tub 3 in such a position that its through-opening 10 coincides with a charging port 12 formed in the frame of the machine thereabove, and with.the access opening 8 of the tub. In this position the counterweight is subsequently affixed to the tub of the machine by means of bolts 13 and nuts 14 or equivalent fastener elements.
  • Charging port 12 is surrounded by a frame structure 15 acting as a charging funnel and having a free edge 16 partially projecting into the interior of the machine.
  • Connected between the free edge portion 16 of frame structure 15 and channel-shaped outer peripheral rim 11 of counterweight 9 is a bellows-shaped flexible element 17 for permitting the laundry to be safely introduced into and withdrawn from drum 5. For connecting flexible element 17 to frame structure 15, the free egde portions 16 and 18, respectively, cf the frame structure and the flexible element brought into contact with each other, whereupon a profiled rigid clamping element 19 is slipped onto the contacting edge portions.
  • The other free edge portion 20 of flexible element 17 is introduced into the channel-shaped edge 11 of counterweight 9 and retained therein by means of an expansible annular member 21.
  • The flexible element 17 may have a different shape and be connected between the charging port and the counterweight in a different manner without thereby leaving the scope of the invention.
  • As shown particularly in fig. 1, counterweight 9 is formed with to opposing lateral edge portions 22 partially projecting into opening 10 for being engaged by a hooks 23 provided on the door flaps of the drum, should the latter be rotated with its door flaps accidentally open.
  • The described location of the counterweight on top of the tub of the washing machine results in an upwards displacement of the center of gravity of the tub-drum assembly and thus in a shorter lever arm of the center of gravity with respect to the suspension points of the assembly within the frame of the machine.
  • As a result, the dynamic equilibration of the said assembly is achieved by employign a counterweight of the same Material as abobe specified, although of reduced weight, so that the counterweight may be designed with reduced dimensions and formed of a reduced amount of material.
  • As the dimensions of the counterweight are thus reduced, its accommodation within the frame of the machine as well as that of the other components thereof is greatly facilitated.

Claims (2)

1. A laundry washing machine of the top-charging type, particularly for domestic use, comprising a tub suspended in the frame of the machine, a drum rotatably mounted in said tub and provided with two spring-biased peripheral doors adapted to be partially superimposed on one another in the closed position, and at least one counterweight of a material having a high specific weight for ensuring the dynamic equilibration of the tub-drum assembly, said tub being provided with a top opening giving access to said drum, characterized in that said counterweight (9) is formed with at least one central through-opening (10) and is mounted on the top portion of said tub (3) so that said through-opening (10) coincides with said access opening (8) and with a charging port (12) formed in the frame of the machine, flexible means (17) being provided for connection to the respective peripheral borders of said counterweight (9) and said charging port (12).
2. A laundry washing machine according to claim 1, characterized in that said counterweight (9) is formed with at least two opposing lateral edge portions (22) partially projecting into said access opening (10) an cooperating with corresponding hooks (23) affixed to said doors of said drum.
EP83108538A 1982-09-28 1983-08-30 Laundry washing machine of the top-charging type provided with a counterweight Expired EP0104475B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83108538T ATE31434T1 (en) 1982-09-28 1983-08-30 TOP LOADING BALANCED LAUNDRY WASHING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN1982U34037U IT8234037U1 (en) 1982-09-28 1982-09-28 TOP-LOADING WASHING MACHINE WITH COUNTERWEIGHT
IT3403782U 1982-09-28

Publications (3)

Publication Number Publication Date
EP0104475A2 true EP0104475A2 (en) 1984-04-04
EP0104475A3 EP0104475A3 (en) 1985-11-21
EP0104475B1 EP0104475B1 (en) 1987-12-16

Family

ID=11238907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108538A Expired EP0104475B1 (en) 1982-09-28 1983-08-30 Laundry washing machine of the top-charging type provided with a counterweight

Country Status (5)

Country Link
EP (1) EP0104475B1 (en)
AT (1) ATE31434T1 (en)
DE (1) DE3374951D1 (en)
ES (1) ES274111Y (en)
IT (1) IT8234037U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604454A1 (en) * 1986-09-26 1988-04-01 Ciapem LAUNDRY WASHING MACHINE WITH TANK-BODY LINER
DE102006036133B3 (en) * 2006-08-01 2007-09-06 Miele & Cie. Kg Case loading washing machine or top loading horizontal axis washing machine has drum, and reinforcing medium formed as separate part is provided for hardening of opening area around filler opening

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7225565U (en) 1977-03-24 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Jacket loadable drum washing machine
FR1033252A (en) 1951-02-28 1953-07-09 Washing machine
FR2218419B1 (en) * 1973-02-19 1976-09-10 Amiens Const Electro Mec
FR2218418B1 (en) * 1973-02-19 1977-07-22 Amiens Const Electro Mec
DE2507849A1 (en) 1975-02-24 1976-09-02 Blomberg Werke Kg Washing machine with spring-mounted tub - with simple space-saving inertia mass for vibrating unit
FR2318261A1 (en) * 1975-07-17 1977-02-11 Amiens Const Elect Mec WASHING MACHINE DRUM DOOR CLOSURE SAFETY DEVICE
DE2633603C2 (en) * 1976-07-27 1981-11-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Front loadable drum washing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604454A1 (en) * 1986-09-26 1988-04-01 Ciapem LAUNDRY WASHING MACHINE WITH TANK-BODY LINER
EP0266239A1 (en) * 1986-09-26 1988-05-04 Ciapem Washing machine with a sleeve connecting the tub to the housing
DE102006036133B3 (en) * 2006-08-01 2007-09-06 Miele & Cie. Kg Case loading washing machine or top loading horizontal axis washing machine has drum, and reinforcing medium formed as separate part is provided for hardening of opening area around filler opening
EP1908875A1 (en) * 2006-08-01 2008-04-09 Miele & Cie. KG Front or top loading washing machine

Also Published As

Publication number Publication date
EP0104475A3 (en) 1985-11-21
ES274111Y (en) 1985-04-01
IT8234037U1 (en) 1984-03-28
ATE31434T1 (en) 1988-01-15
IT8234037V0 (en) 1982-09-28
EP0104475B1 (en) 1987-12-16
DE3374951D1 (en) 1988-01-28
ES274111U (en) 1984-10-01

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