WO2009095303A1 - Lifter for a washing machine - Google Patents

Lifter for a washing machine Download PDF

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Publication number
WO2009095303A1
WO2009095303A1 PCT/EP2009/050361 EP2009050361W WO2009095303A1 WO 2009095303 A1 WO2009095303 A1 WO 2009095303A1 EP 2009050361 W EP2009050361 W EP 2009050361W WO 2009095303 A1 WO2009095303 A1 WO 2009095303A1
Authority
WO
WIPO (PCT)
Prior art keywords
lifter
round bar
drum
rectangular region
lateral surfaces
Prior art date
Application number
PCT/EP2009/050361
Other languages
French (fr)
Inventor
Ferudun Arabaci
Gültekin Türe
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2009095303A1 publication Critical patent/WO2009095303A1/en

Links

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
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

  • the present invention relates to a lifter comprising a rectangular region for leaning against an internal surface of a laundry drum; at least one fastening element disposed on said rectangular region to fasten said lifter to the drum; lateral surfaces raised upward by a first angle from said rectangular region; front surfaces raised upward by a second angle from the rectangular region, so that said lateral surfaces and front surfaces combine at a predetermined upper line so as to yield an essentially triangular pyramid formation.
  • a drum of a washing machine is embodied by combining folded sheet metal end to end so as to obtain an annular structure.
  • Such sheet metal has perforated structures, these perforations providing liquid transfer into the drum from a tub wherein the drum is disposed.
  • a lifter is disposed for supporting a stable attachment there between. Another lifter may be disposed distant from these connecting edges.
  • the principal purpose of a lifter is to lift laundry placed into the drum from a bottom region of the drum and to let it fall down again after having been lifted somewhat, for agitating the laundry to effect a rubbing and squeezing action to remove dirt and stain.
  • a lifter may be placed on the seam formed by the connecting edges to mask the seam from direct viewing.
  • a lifter generally resembles the form of a triangular pyramid extending along a combining surface. This structure avoids the deformation of the drum surface at the end of a certain period of use that may arise from the weight of laundry put into the drum.
  • the present invention relates to a washing machine lifter, eliminating aforesaid problems and bringing new advantages to the relevant technical field.
  • the main objective of the present invention is to provide a lifter, which will allow the laundry within the drum to rotate more freely, and will increase the washing efficiency at the same time.
  • the present invention provides a lifter comprising a rectangular region for leaning against an internal surface of a laundry drum; at least one fastening element disposed on said rectangular region to fasten said lifter to the drum; lateral surfaces raised upward by a first angle from said rectangular region; front surfaces raised upward by a second angle from the rectangular region, so that said lateral surfaces and front surfaces combine at a predetermined upper line so as to yield an essentially triangular pyramid formation.
  • a rotatable round bar is attached to said lifter at said upper line to contact laundry passing along said lifter.
  • the lifter according to the invention includes a rotatable bar which ensures that laundry passing along said lifter as mounted to a laundry drum containing laundry and being rotated may move smoothly and with a substantially reduced friction along the lifter. This is accomplished by rotating the bar upon passing the laundry, thus avoiding friction at the upper line of the lifter.
  • said mutual front surfaces comprise two slots, one each formed at the tip section of one of two mutual surfaces so that said round bar is placed into said slots.
  • said round bar has a structural form that complements the lateral surfaces so as to provide an adequate projection from the combining points of lateral surfaces, and comprises two pins, one each provided at one of two mutual ends to enter into the slot in the front surface.
  • said round bar is not single- piece, but is composed of a plurality of parts. Even more preferred, such parts may be rotatable independently of one another.
  • the surface structure of said round bar comprises recessions and/or projections.
  • the surface structure of said round bar has a grooved formation.
  • Figure 1 gives a perspective view of a drum.
  • Figure 2 gives a perspective view from below of a lifter disposed in the drum.
  • Figure 3 gives a front cross-sectional view of the lifter.
  • FIG. 1 illustrates a drum (1 ) into which laundry is placed in a washing machine.
  • three folded metal sheets (1.1 ) are used for making up the surface of the drum (1 ). Both ends of each such sheet metal are provided with elements to provide the connection with the next sheet metal, as well as with three slots into which the fastening elements of the lifter (1.2) are introduced.
  • the surfaces of these sheet metals have a bored or perforated structure. Water inlet is provided into the drum (1 ) by means of these orifices. Once the sheet metals are joined end to end, they yield a circle, and are mounted on a frame of which the middle is open from the front.
  • a lengthwise- extending lifter (1.2) is disposed at the combining point (1.2.2.1 ) of the folded metal sheets (1 -1 )- This structure provides a better attachment between the folded metal sheets (1.1 ) and thus improves their strength against the internal forces caused by external influences.
  • Figure 2 illustrates said lifter (1.2) from below.
  • the lower surface of the lifter (1.2) is embodied in the form of a rectangular surface (1.2.3).
  • the edge structure of this surface is curved.
  • a lateral surface (1.2.2) extends upwards from the longer edge of the rectangular surface (1.2.3), and similarly a front surface (1.2.1 ) extends upwards from the shorter edges of said rectangular surface (1.2.3).
  • Said lateral surface (1.2.2) and front surface (1.2.1 ) combine at an upper point, so as to yield a triangular pyramid-like structure.
  • Three fastening elements (1.2.3.1 ) are provided along the longer edge of the rectangular surface (1.2.3). These fastening element (1.2.3.1 ) extend sufficiently downward from said longer edges and then produce an outward projection.
  • 6 supporting ribs (1.2.4) are disposed in the interior of the lifter (1.2) for supporting both the lateral surfaces (1.2.2) and said fastening element (1.2.3.1 ). Said supporting ribs (1.2.4) avoid any damages to occur on the lateral surfaces (1.2.2) and fastening element (1.2.3.1 ), when a pressure is exerted against the lifter (1.2) during operation.
  • Figure 3 gives a front cross-sectional view of the lifter (1.2).
  • said fastening elements (1.2.3.1 ) are disposed inwardly to some distance from the lower surface edge of the lateral surfaces (1.2.2) with a predetermined angle.
  • the round bar (1.2.5) is positioned at the upper section of the lifter (1.2) and between two lateral surfaces (1.2.2).
  • the round bar (1.2.5) has a form that enables itself to complement the curved structure of the upper part of said lateral surfaces (1.2.2) at the upper part of the lifter (1.2).
  • the tip parts of the round bar (1.2.5) are provided with one each pin (1.2.5.1 ) formed so as to engage into the slots provided on the front surface (1.2.1 ).
  • the surface structure of the round bar support (1.2.5) is straight. If the laundry within the drum (1 ) hits said lifter (1.2) as the drum (1 ) is rotated, it is hereby ensured that the laundry carries on the rotational movement by means of this round bar support (1.2.5). Thus the laundry is rotated relatively more and is cleaned better.

Landscapes

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

Abstract

A lifter (1.2) comprises a rectangular region (1.2.3) for leaning against an internal surface of a laundry drum (1); at least one fastening element (1.2.3.1) disposed on said rectangular region (1.2.3) to fasten said lifter (1.2) to the drum (1); lateral surfaces (1.2.2) raised upward by a first angle from said rectangular region (1.2.3); front surfaces (1.2.1) raised upward by a second angle from the rectangular region (1.2.3), so that said lateral surfaces (1.2.2) and front surfaces (1.2.1) combine at a predetermined upper line so as to yield an essentially triangular pyramid formation. A rotatable round bar (1.2.5) is attached to said lifter (1.2) at said upper line to contact laundry passing along said lifter (1.2).

Description

LIFTER FOR A WASHING MACHINE
The present invention relates to a lifter comprising a rectangular region for leaning against an internal surface of a laundry drum; at least one fastening element disposed on said rectangular region to fasten said lifter to the drum; lateral surfaces raised upward by a first angle from said rectangular region; front surfaces raised upward by a second angle from the rectangular region, so that said lateral surfaces and front surfaces combine at a predetermined upper line so as to yield an essentially triangular pyramid formation.
A drum of a washing machine is embodied by combining folded sheet metal end to end so as to obtain an annular structure. Such sheet metal has perforated structures, these perforations providing liquid transfer into the drum from a tub wherein the drum is disposed. Additionally, on an inner side of the drum and at the connecting edges of such folded sheet metals, a lifter is disposed for supporting a stable attachment there between. Another lifter may be disposed distant from these connecting edges. The principal purpose of a lifter is to lift laundry placed into the drum from a bottom region of the drum and to let it fall down again after having been lifted somewhat, for agitating the laundry to effect a rubbing and squeezing action to remove dirt and stain. As desired, a lifter may be placed on the seam formed by the connecting edges to mask the seam from direct viewing.
With respect to the prior art, a lifter generally resembles the form of a triangular pyramid extending along a combining surface. This structure avoids the deformation of the drum surface at the end of a certain period of use that may arise from the weight of laundry put into the drum.
This embodiment, however, requires to being improved. One of the requirements is that, even if the current machines have a sufficient washing efficiency, the form of the current lifter may still partially avoid the laundry's movement within the drum. More specifically, the more the laundry is rotated within the drum, the more it contacts with the perforated surface of the drum so that a more efficient cleaning and washing is provided. In brief, a novelty is necessitated in the relevant technical field, which would overcome the aforesaid problem.
The present invention relates to a washing machine lifter, eliminating aforesaid problems and bringing new advantages to the relevant technical field.
The main objective of the present invention is to provide a lifter, which will allow the laundry within the drum to rotate more freely, and will increase the washing efficiency at the same time.
According to the objectives mentioned above and to emerge from the following detailed description, the present invention provides a lifter comprising a rectangular region for leaning against an internal surface of a laundry drum; at least one fastening element disposed on said rectangular region to fasten said lifter to the drum; lateral surfaces raised upward by a first angle from said rectangular region; front surfaces raised upward by a second angle from the rectangular region, so that said lateral surfaces and front surfaces combine at a predetermined upper line so as to yield an essentially triangular pyramid formation. A rotatable round bar is attached to said lifter at said upper line to contact laundry passing along said lifter.
Accordingly, the lifter according to the invention includes a rotatable bar which ensures that laundry passing along said lifter as mounted to a laundry drum containing laundry and being rotated may move smoothly and with a substantially reduced friction along the lifter. This is accomplished by rotating the bar upon passing the laundry, thus avoiding friction at the upper line of the lifter.
In a preferred embodiment of the present invention, said mutual front surfaces comprise two slots, one each formed at the tip section of one of two mutual surfaces so that said round bar is placed into said slots.
In another preferred embodiment of the present invention, said round bar has a structural form that complements the lateral surfaces so as to provide an adequate projection from the combining points of lateral surfaces, and comprises two pins, one each provided at one of two mutual ends to enter into the slot in the front surface. Yet in another preferred embodiment of the present invention, said round bar is not single- piece, but is composed of a plurality of parts. Even more preferred, such parts may be rotatable independently of one another.
Still in another preferred embodiment of the present invention, the surface structure of said round bar comprises recessions and/or projections.
Still in a further preferred embodiment of the present invention, the surface structure of said round bar has a grooved formation.
Structural and characteristic features and all advantages of the present invention shall be made clear by means of annexed figures described here below and a detailed description written by making references to said figures; therefore the present invention must be evaluated by taking said figures and the detailed description into consideration.
Brief Description of Figures:
Figure 1 gives a perspective view of a drum.
Figure 2 gives a perspective view from below of a lifter disposed in the drum.
Figure 3 gives a front cross-sectional view of the lifter.
Reference Numerals
1 Drum
1.1 Folded metal sheet
1.2 Lifter
1.2 .1 Front surface
1.2 .2 Lateral surface
1.2 .2. 1 Combining point
1.2 .3 Rectangular surface
1.2 .3. 1 Fastening element
1.2 .4 Supporting rib
1.2 .5 Round bar
1.2 .5. 1 Pin In the following detailed description, the subject novelty shall be described illustratively by means of examples as illustrated in the annexed figures, which serve only to make clear the present invention without imposing any restrictions thereon. Accordingly, it has been assumed here that the present invention is applied to a washing machine in the following detailed description. The present invention, however, can similarly be applied to any household or industrial machine comprising a drum, such as a drying machine.
Figure 1 illustrates a drum (1 ) into which laundry is placed in a washing machine. Here, three folded metal sheets (1.1 ) are used for making up the surface of the drum (1 ). Both ends of each such sheet metal are provided with elements to provide the connection with the next sheet metal, as well as with three slots into which the fastening elements of the lifter (1.2) are introduced. The surfaces of these sheet metals have a bored or perforated structure. Water inlet is provided into the drum (1 ) by means of these orifices. Once the sheet metals are joined end to end, they yield a circle, and are mounted on a frame of which the middle is open from the front. In the interior of the drum (1 ), a lengthwise- extending lifter (1.2) is disposed at the combining point (1.2.2.1 ) of the folded metal sheets (1 -1 )- This structure provides a better attachment between the folded metal sheets (1.1 ) and thus improves their strength against the internal forces caused by external influences.
Figure 2 illustrates said lifter (1.2) from below. Here, the lower surface of the lifter (1.2) is embodied in the form of a rectangular surface (1.2.3). The edge structure of this surface is curved. A lateral surface (1.2.2) extends upwards from the longer edge of the rectangular surface (1.2.3), and similarly a front surface (1.2.1 ) extends upwards from the shorter edges of said rectangular surface (1.2.3). Said lateral surface (1.2.2) and front surface (1.2.1 ) combine at an upper point, so as to yield a triangular pyramid-like structure. Three fastening elements (1.2.3.1 ) are provided along the longer edge of the rectangular surface (1.2.3). These fastening element (1.2.3.1 ) extend sufficiently downward from said longer edges and then produce an outward projection. Additionally, 6 supporting ribs (1.2.4) are disposed in the interior of the lifter (1.2) for supporting both the lateral surfaces (1.2.2) and said fastening element (1.2.3.1 ). Said supporting ribs (1.2.4) avoid any damages to occur on the lateral surfaces (1.2.2) and fastening element (1.2.3.1 ), when a pressure is exerted against the lifter (1.2) during operation.
Figure 3 gives a front cross-sectional view of the lifter (1.2). Here, said fastening elements (1.2.3.1 ) are disposed inwardly to some distance from the lower surface edge of the lateral surfaces (1.2.2) with a predetermined angle. The round bar (1.2.5) is positioned at the upper section of the lifter (1.2) and between two lateral surfaces (1.2.2). As can be seen from the figure as well, the round bar (1.2.5) has a form that enables itself to complement the curved structure of the upper part of said lateral surfaces (1.2.2) at the upper part of the lifter (1.2). The tip parts of the round bar (1.2.5) are provided with one each pin (1.2.5.1 ) formed so as to engage into the slots provided on the front surface (1.2.1 ). The surface structure of the round bar support (1.2.5) is straight. If the laundry within the drum (1 ) hits said lifter (1.2) as the drum (1 ) is rotated, it is hereby ensured that the laundry carries on the rotational movement by means of this round bar support (1.2.5). Thus the laundry is rotated relatively more and is cleaned better.
The protection scope of the present invention is set forth in the annexed Claims and is not to be restricted to the illustrative disclosures given above, under the detailed description. It is because a person skilled in the relevant art can obviously produce similar embodiments under the light of the foregoing disclosures, without departing from the main principles of the present invention.

Claims

1. A lifter (1.2) comprising a rectangular region (1.2.3) for leaning against an internal surface of a laundry drum (1 ); at least one fastening element (1.2.3.1 ) disposed on said rectangular region (1.2.3) to fasten said lifter (1.2) to the drum (1 ); lateral surfaces (1.2.2) raised upward by a first angle from said rectangular region (1.2.3); front surfaces (1.2.1 ) raised upward by a second angle from the rectangular region (1.2.3), so that said lateral surfaces (1.2.2) and front surfaces (1.2.1 ) combine at a predetermined upper line so as to yield an essentially triangular pyramid formation, characterized in that a rotatable round bar (1.2.5) is attached to said lifter (1.2) at said upper line to contact laundry passing along said lifter (1.2).
2. The lifter (1.2) according to claim 1 , characterized in that a mutual front surfaces
(1.2.1 ) comprise two slots, one each formed at the tip section of one of two mutual surfaces, and said round bar support (1.2.5) is placed into said slots.
3. The lifter (1.2) according to any of the preceding claims, characterized in that the round bar support (1.2.5) has a structural form that complements the lateral surfaces
(1.2.2) so as to provide an adequate projection from the combining point (1.2.2.1 ) of lateral surfaces (1.2.2), and comprises two pins (1.2.5.1 ), one each provided at one of two mutual ends to enter into the slot in said front surface (1.2.1 ).
4. The lifter (1.2) according to any of the preceding claims, characterized in that said round bar (1.2.5) is composed of a plurality of parts.
5. The lifter (1.2) according to any of the preceding claims, characterized in that a surface structure of the round bar (1.2.5) comprises recessions and/or projections.
6. The lifter (1.2) according to Claim 5, characterized in that said surface structure of the round bar (1.2.5) has a grooved formation.
PCT/EP2009/050361 2008-01-29 2009-01-14 Lifter for a washing machine WO2009095303A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2008/00580 2008-01-29
TR2008/00580A TR200800580A2 (en) 2008-01-29 2008-01-29 A drum curtain for the washing machine.

Publications (1)

Publication Number Publication Date
WO2009095303A1 true WO2009095303A1 (en) 2009-08-06

Family

ID=40473537

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/050361 WO2009095303A1 (en) 2008-01-29 2009-01-14 Lifter for a washing machine

Country Status (2)

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TR (1) TR200800580A2 (en)
WO (1) WO2009095303A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2586900A1 (en) * 2011-09-29 2013-05-01 Samsung Electronics Co., Ltd. Lifter and washing machine having the same
CN104278474A (en) * 2013-07-04 2015-01-14 东部大宇电子株式会社 Drum-type washing machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161219A (en) * 1966-08-31 1969-08-13 Philips Electronic Associated Improvements in or relating to Domestic Washing Machines.
JPH09215894A (en) * 1996-02-15 1997-08-19 Matsushita Electric Ind Co Ltd Washing machine
EP1502982A2 (en) * 2003-07-28 2005-02-02 Lg Electronics Inc. Washing machine
US20070017259A1 (en) * 2005-06-30 2007-01-25 Cho Han K Drum type washer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1161219A (en) * 1966-08-31 1969-08-13 Philips Electronic Associated Improvements in or relating to Domestic Washing Machines.
JPH09215894A (en) * 1996-02-15 1997-08-19 Matsushita Electric Ind Co Ltd Washing machine
EP1502982A2 (en) * 2003-07-28 2005-02-02 Lg Electronics Inc. Washing machine
US20070017259A1 (en) * 2005-06-30 2007-01-25 Cho Han K Drum type washer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2586900A1 (en) * 2011-09-29 2013-05-01 Samsung Electronics Co., Ltd. Lifter and washing machine having the same
CN104278474A (en) * 2013-07-04 2015-01-14 东部大宇电子株式会社 Drum-type washing machine

Also Published As

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