EP3031970A1 - Toplader-Trommel für Waschmaschinen - Google Patents

Toplader-Trommel für Waschmaschinen Download PDF

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Publication number
EP3031970A1
EP3031970A1 EP14197248.9A EP14197248A EP3031970A1 EP 3031970 A1 EP3031970 A1 EP 3031970A1 EP 14197248 A EP14197248 A EP 14197248A EP 3031970 A1 EP3031970 A1 EP 3031970A1
Authority
EP
European Patent Office
Prior art keywords
drum
lateral wall
segment
articulated
closing device
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
EP14197248.9A
Other languages
English (en)
French (fr)
Other versions
EP3031970B1 (de
Inventor
Vedobrato Chatterjee
Deepak Gupta
Sachin Goverdhanrao Nilawar
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP14197248.9A priority Critical patent/EP3031970B1/de
Publication of EP3031970A1 publication Critical patent/EP3031970A1/de
Application granted granted Critical
Publication of EP3031970B1 publication Critical patent/EP3031970B1/de
Active 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/10—Doors; Securing 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 for laundry appliances, i.e. appliances for the washing and/or drying of laundry, of the top-loading type.
  • the present invention is related to a top-loading drum for laundry appliances which is provided with an increased opening window for accessing the internal volume of the drum and with a closing device for closing said opening window which is highly reliable, and quick and easy to actuate.
  • laundry appliances normally have a spin drum rotatably mounted inside the casing of the appliance, and have two main possible configurations: front loading, in which the drum is accessible through a porthole positioned on the front of the casing, and top loading, in which the drum is accessible through the top of the casing.
  • the drum has a substantially cylindrical lateral wall and rotates around an horizontal axis of rotation.
  • the drum is normally provided with an opening window located on the lateral wall thereof.
  • a pair of lids are normally hinged on opposite sides of the window, said lids opening outwardly to allow the loading/unloading of clothes into/from the internal volume of the drum.
  • a first drawback of know-type solutions is the relatively limited opening space available for loading/unloading of clothes.
  • the opening window positioned on the lateral wall of the drum normally has relatively limited dimensions, due to the need of limiting the size and encumbrance of the door assembly (e.g. lids) which is used to close the window.
  • the use two lids hinged on opposite sides of the opening window requires the use of both hands of the user for opening/closing them, making uncomfortable for the user the overall operation of opening/closing the lids and loading/unloading clothes, as his/her hands are at least partially occupied by the clothes to be loaded/unloaded.
  • the present invention relates to a top loading drum for laundry appliances having a substantially cylindrical lateral wall that defines an internal volume of said drum, an opening positioned on said lateral wall for accessing said internal volume, and a closing device for closing said opening and movable between a closed position and an open position;
  • the closing device comprises a first, sliding, portion which is slidingly coupled to said lateral wall and is slidingly movable on said lateral wall between said closed position and said open position;
  • the closing device further comprises a second, articulated, portion which has a first end with a first terminal hinged connection on said lateral wall and a second end with a second terminal hinged connection on said first, sliding, portion, said second, articulated, portion having a plurality of segments and being provided with at least one intermediate hinged connection between two subsequent segments of said plurality of segments.
  • the use of a closing device having a sliding portion and an articulated, foldable, portion allows increasing the opening space for accessing the drum, maintaining at the same time a relatively simple and easy-to-operate structure.
  • the closing device can be actuated (i.e. open/closed) even with one hand by the user.
  • the construction of the closing device with a sliding portion and a hinged, articulated, portion is optimal for load distribution to the drum body.
  • the load distribution from the door assembly (i.e. the closing device) to the drum body is more or less uniform and spread out on the drum surface.
  • the second, articulated, portion of the closing device follows the profile of the lateral wall of the drum when the closing device is in the closed position and is folded in the internal volume of the drum when the closing device is in the open position.
  • the objective of maximum opening dimension is therefore achieved with comparatively minimum penetration of the door assembly into the drum.
  • the articulated portion is closely adjacent to the lateral wall of the drum, while when the closing device is in the open position the articulated portion is confined in a limited portion on the upper side of the drum interior, with negligible loss of available internal volume for clothes.
  • the segments of the articulated portion of the closing device are preferably curved segments which have substantially the same curvature radius of the cylindrical lateral wall of drum.
  • the number of segments forming the articulated portion of the closing device can be chosen according to the design needs. A minimum of two segments is normally required, with a first segment hinged on the lateral wall of the drum, a second segment hinged on the sliding portion and an intermediate hinged connection positioned between said first segment and said second segment. In this way, the closing device comprises a sliding element and two foldable, hinged elements. A higher number of segments forming the articulated portion of the closing device is normally preferred.
  • the articulated portion of the closing device preferably comprises a first segment hinged on the lateral wall of the drum, a second segment hinged on the sliding portion and a third segment positioned between said first and second segment and hinged on said first and second segment.
  • the closing device comprises a sliding element and three foldable, hinged elements.
  • the angle between two subsequent segments of the second articulated portion as measured form the interior of said drum is greater than 180°, and more preferably said angle is greater than 270 °.
  • angles between the first end of the articulated, portion and the lateral wall of the drum and between the second end of the articulated portion and the sliding portion as measured form the interior of said drum are lower than 180 °, and preferably lower than 90 °.
  • the articulated portion is folded as much as possible inside the drum, thereby minimizing the occupied volume inside the drum.
  • the above angles are measured with reference to the tangents to the segments in correspondence of the connection points.
  • the closing device comprises elastic means, e.g. torsion springs, which are positioned in correspondence of one or more of said terminal hinged connections and/or intermediate hinged connections.
  • elastic means e.g. torsion springs
  • the elastic means positioned at appropriate hinged connections of the closing device actuate an automatic opening action of the door assembly, with an automatic collapsing movement of the articulated portion inside the drum and an automatic sliding movement of the sliding portion on the wall of the drum. It is worth noting that such operation can be carried out with one hand only and with little or no effort by the user.
  • a top loading drum for laundry appliances has a substantially cylindrical lateral wall 2 that defines an internal volume 3 of the drum 1 into which clothes are loaded for washing and/or drying purposes. Mounting of the drum 1 into the casing of the appliance, as well as its movement and functioning, can be made according to conventional practice and will not be described in details.
  • the drum 1 is provided with an opening 4 which is positioned on said lateral wall 2 for accessing the internal volume 3 and for loading/unloading clothes into/from it.
  • a closing device 5 for closing the opening 4 is also provided, said closing device 5 being movable between a closed position and an open position.
  • door assembly will also be used as an alternative to the term “closing device”.
  • the closing device 5 comprises a first, sliding, portion 6 which is slidingly coupled to the lateral wall 2 of the drum 1.
  • the sliding portion 6 is slidingly movable on said lateral wall 2 between the closed position and the open position. In the attached figure, the sliding portion 6 slides counterclockwise during opening and clockwise when closing.
  • the closing device 5 further comprises a second articulated portion 7 which has a first end 71 with a first terminal hinged connection 81 on the lateral wall 2 of the drum 1, and a second end 72 with a second terminal hinged connection 82 on the first sliding portion 6.
  • the second, articulated, portion 7 has a plurality of segments and is provided with at least one intermediate hinged connection between two subsequent segments of said plurality of segments.
  • the second articulated portion 7 comprises three segments 91, 92, 93.
  • the first segment 91 has a first end 71 with a first terminal hinged connection 81 on the lateral wall 2 of the drum 1;
  • the second segment 92 has a second end 72 with a second terminal hinged connection 82 on the first, sliding, portion 6;
  • the third segment 93 is positioned between said first 91 and second 92 segment, and is connected to said first 91 and second 92 segment through, respectively, a first intermediate hinged connection 83 and a second intermediate hinged connection 84.
  • the second articulated portion 7 comprises only two segments 91 and 92.
  • the first segment 91 has a first end 71 with a first terminal hinged connection 81 on the lateral wall 2 of the drum 1;
  • the second segment 92 has a second end 72 with a second terminal hinged connection 82 on the first, sliding, portion 6;
  • an intermediate hinged connection 85 is positioned between a second end 73 of said first segment 91 and a first end 74 of said second segment 92.
  • the closing device according to the solution of figures 6 is more simple and easier to manufacture with respect to the previously described one; however the volume taken by the articulated portion 7 inside the drum 1 when the device is in the open position is larger than in the previous case.
  • the second articulated portion 7 follows the profile of the lateral wall 2 when the door assembly 5 is in the closed position (see figure 1 ), i.e. the segments 91, 92 and 93 are closely adjacent and parallel to the lateral wall 2 of the drum 1.
  • the situation is the same for the embodiment of figures 6 in which, when in the closed position, the segments 91 and 92 are closely adjacent and parallel to the lateral wall 2 of the drum 1.
  • the various segments 91-93 forming the second articulated portion 7 are preferably curved segments having substantially the same curvature radius of the cylindrical lateral wall 2 of the drum 1, so that no internal space of the drum 1 is occupied by them when the door assembly 5 is in the closed position.
  • the opening action of the door assembly 5 can be conveniently started by a "reverse" movement of the sliding portion 6 in the closing direction, i.e. clockwise in the attached figures.
  • the segments 91, 92 and 93 of the second articulated portion 7 are moved away from the lateral wall 2 and are projected inside the internal volume 3 of the drum 1.
  • the opening action of the door assembly 5 is continued by moving the sliding portion 6 in the opening direction, i.e. counterclockwise in the attached figures.
  • the second articulated portion 7 progressively "collapses", while the segments 91, 92 and 93 are folding on each other.
  • the door assembly 5 is completely open, i.e. the first sliding portion 6 is completely moved away from the opening 4 of the lateral wall 2 and the second articulated portion 7 is folded inside the internal volume 3 of the drum 1.
  • the number and length of the segments forming the second articulated portion 7 of the closing device 5 can be chosen according to the needs. In general, a higher number of relatively short segments brings about less internal volume taken when the second articulated portion 7 is folded inside the drum 1, as it can be seen by comparing the embodiments of figure 5 and figure 6 .
  • segment 91 in the embodiment of figures 1-5 , in the totally open position of figure 5 , the segment 91 is closely folded on segment 93 and the segment 92 is also closely folded on segment 93; then segment 91 is closely folded also on the lateral wall 2 of the drum 1, while segment 92 is closely folded on the first sliding portion 6.
  • the closing device 5 comprises elastic means which are positioned in correspondence of one or more of the terminal hinged connections 81, 82 and/or intermediate hinged connections 83, 84, 85.
  • Torsion springs are preferably used as elastic means, but other equivalent means can be used.
  • the elastic means e.g. torsion springs
  • the elastic means are positioned in correspondence of said first terminal hinged connection 71 and of said second intermediate hinged connection 84.
  • the action of the springs will prompt the folding action of the segments 91, 92 and 93 on each other and towards the lateral wall 2 of the drum 1, without the need of any manual action by the user.
  • top loading drum thus conceived, all falling within the scope of the present invention.
  • materials used and the contingent dimensions and shapes can be any, according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP14197248.9A 2014-12-10 2014-12-10 Toplader-Trommel für Wäschepflegegeräte Active EP3031970B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14197248.9A EP3031970B1 (de) 2014-12-10 2014-12-10 Toplader-Trommel für Wäschepflegegeräte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14197248.9A EP3031970B1 (de) 2014-12-10 2014-12-10 Toplader-Trommel für Wäschepflegegeräte

Publications (2)

Publication Number Publication Date
EP3031970A1 true EP3031970A1 (de) 2016-06-15
EP3031970B1 EP3031970B1 (de) 2017-04-19

Family

ID=52023304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14197248.9A Active EP3031970B1 (de) 2014-12-10 2014-12-10 Toplader-Trommel für Wäschepflegegeräte

Country Status (1)

Country Link
EP (1) EP3031970B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849342A (en) * 1929-05-27 1932-03-15 Justin T Flint Washer
US2556490A (en) * 1945-08-27 1951-06-12 Avco Mfg Corp Washing by intermittent high and low speed rotation
DE2061639A1 (de) * 1970-12-04 1972-06-08 Siemens Elektrogeraete Gmbh Trommelwaschmaschine mit einer von der Mantelseite beschickbaren Wäschetrommel
US3965704A (en) * 1973-08-29 1976-06-29 Em. D'hooge N.V. Drum for washer-extractor machines
DE4426900A1 (de) * 1993-08-11 1995-02-16 Miele & Cie Mantelbeschickbare Trommelwaschmaschine
EP1548170A1 (de) * 2003-12-22 2005-06-29 Brandt Industries Trommeltür für Waschmaschine und/oder Trockner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849342A (en) * 1929-05-27 1932-03-15 Justin T Flint Washer
US2556490A (en) * 1945-08-27 1951-06-12 Avco Mfg Corp Washing by intermittent high and low speed rotation
DE2061639A1 (de) * 1970-12-04 1972-06-08 Siemens Elektrogeraete Gmbh Trommelwaschmaschine mit einer von der Mantelseite beschickbaren Wäschetrommel
US3965704A (en) * 1973-08-29 1976-06-29 Em. D'hooge N.V. Drum for washer-extractor machines
DE4426900A1 (de) * 1993-08-11 1995-02-16 Miele & Cie Mantelbeschickbare Trommelwaschmaschine
EP1548170A1 (de) * 2003-12-22 2005-06-29 Brandt Industries Trommeltür für Waschmaschine und/oder Trockner

Also Published As

Publication number Publication date
EP3031970B1 (de) 2017-04-19

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