EP2376700B1 - Appareil électro-ménager présentant une paroi dotée de parties en relief - Google Patents

Appareil électro-ménager présentant une paroi dotée de parties en relief Download PDF

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Publication number
EP2376700B1
EP2376700B1 EP09798905.7A EP09798905A EP2376700B1 EP 2376700 B1 EP2376700 B1 EP 2376700B1 EP 09798905 A EP09798905 A EP 09798905A EP 2376700 B1 EP2376700 B1 EP 2376700B1
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EP
European Patent Office
Prior art keywords
embossing
household appliance
embossings
viewed
side wall
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.)
Active
Application number
EP09798905.7A
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German (de)
English (en)
Other versions
EP2376700A1 (fr
Inventor
Andreas Bohm
Kemal Genc
Stefan Schmidt
Klaus Försterling
Johannes Geyer
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete 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.)
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Publication date
Priority claimed from DE102009027614A external-priority patent/DE102009027614A1/de
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2376700A1 publication Critical patent/EP2376700A1/fr
Application granted granted Critical
Publication of EP2376700B1 publication Critical patent/EP2376700B1/fr
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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4209—Insulation arrangements, e.g. for sound damping or heat insulation

Definitions

  • the invention relates to a domestic appliance with a cabinet-shaped housing, comprising a plurality of walls, at least one of which has an arrangement of embossments.
  • the household appliance described therein is a laundry apparatus having a side wall which has areas which are raised or sunken in relation to adjacent areas thereof, such adjacent areas being connected to one another via inclined areas.
  • the invention relates to a domestic appliance in the form of a laundry treatment appliance such as a washing machine, a tumble dryer or a washer-dryer, and also a household appliance in the form of a refrigerator, a dishwasher, a freezer, a cooker and the like.
  • a laundry treatment appliance such as a washing machine, a tumble dryer or a washer-dryer
  • a household appliance in the form of a refrigerator, a dishwasher, a freezer, a cooker and the like.
  • each side wall embossing is designed as crowns and curved relative to an interior of the household appliance to the outside.
  • each individual surface portion acts as a vibratable membrane with its own resonant frequency.
  • Several same Surface sections with the same resonant frequency lead to an amplification of the noise generated by the vibration exciter at just this frequency.
  • the invention is therefore based on the object to overcome the disadvantages of the prior art and to provide a cabinet-shaped household appliance with an improved housing.
  • the arrangement of embossings comprises a first embossment centered in plan view with respect to a center of the wall, one outside the first embossing and substantially concentric with said second embossing annular in plan view and at least one stripe-shaped third embossment disposed outside the second embossment, said embossments being formed by domes and said embossments being inwardly directed and said domes having fibers at their edges.
  • the embossments according to the present invention have a special feature: they are additionally curved.
  • the embossments are about three to four times as deep as the side wall is thick. However, it may also be provided deeper embossments that are five to six times as deep as the side wall is thick. Even shallow vaults, which are only about one and a half to two times as deep as the thickness of the side wall, are possible. In the case of arched embossments, this information refers in each case to the lowest point of the curvature.
  • the domestic appliance according to the invention is preferably a washing machine, a washer-dryer (i.e., a combination of a washing machine and dryer in a machine) or a tumble dryer.
  • the wall embossed according to the invention is also suitable for any further type of cabinet-shaped domestic appliance, e.g. for a refrigerator, a dishwasher, a freezer, a stove, a cooker hood and the like.
  • the side wall is made of a plastic-coated steel sheet having a thickness between 0.5 mm and 1.5 mm, in particular 0.88 mm, as conventionally used for producing a housing of a household appliance such as a washing machine.
  • DIN EN 10142 DX35D + Z Reference should be made to the relevant standard DIN EN 10142 DX35D + Z with regard to the choice of material.
  • side walls of the housing ie walls which a user sees only when he does not view the device perpendicular to a front side, which carries operating and display elements and the like, are provided with the embossings mentioned.
  • embossings according to the invention are namely not only functional, but also aesthetically effective and give the household appliance equipped with a special elegance and uniqueness.
  • the side walls which are generally rectangular, are provided with such embossments ,
  • the first embossment is annular in plan view and is preferably formed from two ovals. In the simplest case, these may be two circles, but it is preferred that the first stamp is not exactly circular but consists of two ovals, e.g. two ellipses is formed. In a preferred embodiment, the two ovals forming the first imprint are similar in a mathematical sense, i. they are of different sizes, but would be congruent if they were of equal size. This results in a ring with a constant width.
  • the first embossing is symmetrical, preferably rotationally symmetrical. However, it may also be point-symmetrical, or, in another embodiment, also axially symmetrical, in this case particularly preferably in two mutually perpendicular directions, axisymmetric.
  • the first embossment forms a ring in the plan view, and so is located within this ring unrecognized by the first embossment surface of the wall.
  • this surface is free of any further imprinting.
  • This thus unembossed surface is particularly important in a laundry care device of importance, since this houses in its interior a swinging, rotating drum, which requires a certain amount of leeway.
  • the unembossed surface preferably has a minimum size, wherein the diameter is at least one sixth of the width of the side wall, preferably at least one fifth, even more preferably one Quarter, and most preferably one third.
  • the unembossed surface can be even larger and account for up to half the width of the side wall.
  • the unembossed area in the center of the first embossment is preferably located exactly in the middle of the rectangle, but may also be slightly displaced, preferably either up or down, again based on a vertical rectangular side wall of a domestic appliance.
  • the second embossing has a similar shape in plan view as the first embossing, is also annular and externally arranged around the first embossment, so that between the first embossing and the second embossing another ring, preferably of unembossed surface, remains.
  • the second embossment is preferably delimited in plan view by two concentric ovals, which are preferably not similar, so that an annular element with varying width results.
  • the contour of the inner oval of the second stamp may follow (i.e., be similar to, in the mathematical sense) the shape of the outer ring of the first stamp.
  • the outer oval of the annular second embossment may be more elliptical, resulting in a ring of varying width.
  • this outer oval of the second embossment is a horizontal ellipse (or oval) whose horizontal diameter is greater than its vertical diameter. If the second oval is sized so that the embossing would go beyond the edge of the side surface, then this is preferably prevented by the ellipse being cut to the sides, so to speak flattened. This results in a ring having thickenings in the direction of the four corners of the rectangular side wall.
  • Such a shape is particularly advantageous in a domestic appliance which is subject to strong vibrations, such as a washing machine spinning at high speed.
  • a third coinage is available.
  • This is in plan view strip-shaped, preferably depending on the requirement of the case straight or arcuate, more preferably ring segment.
  • the third embossment has a sickle shape, in particular with rounded corners.
  • it is thus preferably formed from two arcs, the ends of which are connected to one another, so that an arcuate element results.
  • the two arcs can be two parallel circular arcs.
  • the third embossment in the plan view is formed from a segment of two intersecting, preferably non-similar, ovals, so that an arcuate element results which is wider in the middle than at the ends. This form can also be called "banana-shaped".
  • the third embossment Preferably, two of the third embossment are present, but there may be more, but it is preferred that these arcuate third embossments are arranged so that the available surface of the generally rectangular wall is utilized as well as possible.
  • the third imprints are preferably arranged symmetrically to the center of the wall.
  • embossings are generally preferred.
  • a cabinet-shaped household appliance which has an upright rectangular side wall, it is therefore preferable to provide each a first and a second embossing and two third embossments, the two third embossments are respectively arranged above and below and the round contour of the first and second Imprints follow.
  • a total of four third imprints can be arranged in the direction of the corners. This form is also advantageous against vibrations.
  • the imprints should make up about 40% of the total area of the wall. This is particularly advantageous in the particularly preferred embodiment described in the examples. In other arrangement and number of imprints, the ratio may also be slightly different, for example, too unembossed in the range of 30:70, 35:65, 40:60, 45:55, 50:50, 55:45, 60:40 and up to 65:35.
  • the bulges are each provided with a chamfer, which is advantageously at a steeper angle to the unembossed surface than the curvature itself. This facilitates the manufacturing process and leads to additional stability.
  • This bevel is also formed in non-curved imprints and their depth then corresponds to the embossing depth.
  • a domed tool is used as the stamp.
  • the kinks of the chamfer are provided with radii. This facilitates the flow of the material during the embossing process and prevents sharp edges from forming.
  • the camber preferably has a large radius, i. is only slightly arched. The chamfer results in a certain embossing depth even with weak curvature.
  • Fig. 1 shows in a slightly stylized perspective view of a washing machine 1 with a housing 2, wherein the housing walls 3, 4, 5, 6, 7, 8, comprising a front wall 3, a rear wall 4, not shown, a top 5, a bottom, not shown 6 and two side walls 7 and 8 (which has a side wall not shown).
  • the washing machine 1 has at its front and the local front wall 3, a control panel 13 and a door 14.
  • the side wall 7 shown in perspective reveals the embossments 9, 10 and 11 to be described in detail below.
  • first embossment 9 In the vicinity of the center of the rectangular side wall 7 is an inwardly curved, in plan view approximately annular first embossment 9 can be seen.
  • the first embossment 9 is formed from two concentric and mathematically similar ellipses, so that a ring of constant width results.
  • the ellipses are approximately circular.
  • a second embossment 10 is located around the annular first embossment 9.
  • the second embossment 10 is formed by a ring which is concentric with the first embossment 9 and whose inner oval is an oval similar to the first embossment 9.
  • the outer boundary of the second embossment 10 is a "lying" oval, but its "pointed” ends (or curves) are flattened so that the oval does not extend beyond the edge of the side wall 7.
  • Fig. 2 is the in Fig. 1 seen in perspective side wall 7, 8 again to see in plan view.
  • the reference numerals are the same as in FIG FIG. 1 because it is in the illustrated side wall 7, 8 to the same as in FIG. 1 is.
  • the shapes of the respective embossments 9, 10, 11 can be seen better.
  • Fig. 3 is a cross section through the center or center of in Fig. 2 shown side wall 7, 8 shown.
  • the section shown shows a cross section through the ring of the first embossment 9. Since this first embossment 9 is the same thickness at each point, it is unnecessary to specify at which point the cut takes place.
  • the cut is made in the direction from the center along a radius of the ellipse of the first stamp 9. It is thus the side wall panel 15 can be seen with the thickness d, which has a first embossment 9, which is curved inwards.
  • the total depth t of the first embossment 9 is about four times the thickness d of the sheet 15.
  • the sheet 15 in this case is about 0.88 mm thick, and the depth t of the embossment 9 is about 3.5 mm.
  • the shape of the curvature 17 with a chamfer 16 is clearly visible.
  • This shape is formed by two Abknickstellen 18 (from the outer edge of the first embossment 9) and 19 (between chamfer and curvature).
  • the sheet is bent at an angle, this angle is about 45 ° (relative to the plane of the side wall).
  • the angle between the two opposite sides of the chamfer is about 90 ° and is denoted by ⁇ .
  • the chamfer 16 has a straight surface.
  • the respective bending points 18 and 19 are designed with radii r1 and r2 in order to avoid sharp-edged kinks. In this example, radius r1 is 2.5 cm and radius r2 is 1.5 cm.
  • the chamfer 16 of the bulge 17 is only very narrow, in this case, its depth f is about 1.3 mm. It has been found that the use of such a chamfer 16 is not only advantageous in the production of the first embossments 9. Such chamfers 16 are therefore used not only in first embossments 9 but in all first, second and third embossments 9, 10, 11 shown and described herein.
  • the curvature 17 of the first embossment 9 has a very large radius r3, which may vary depending on the selected width and total depth of the first embossment 9.
  • This radius r3 can be calculated if it is assumed that the curvature 17 is a circle segment. However, this need not necessarily be the case, but the curvature 17 may also be made by segments of ellipses or other ovals; this depends on the particular tool and thus on the desired type of buckle 17.
  • the width of the first embossment 9, which can be seen here in cross section, is measured between the corresponding bending points 18 on the inside of the first embossment 9 and is marked with b.
  • the width b of the first embossment 9 is about 4 cm.
  • FIGS. 4 to 7 show further embodiments of a side wall 7, 8 with first 9, second 10 and third embossments 11 together with central unembossed surface 12 copies of the side wall 7, 8 according to FIG. 4 were prepared for comparison with a conventional side wall commercially used for a type of washing machine which, with the same material, instead of the embossments 9, 10 and 11 of the side wall 7, 8 according to FIG. 4 had six straight, mutually parallel, stripe-shaped embossing parallel to its longitudinal side.
  • Both side walls consisted of conventional rolled and plastic-coated sheet steel with a thickness of 0.88 mm in accordance with DIN EN 10142 DX53D + Z, 797 mm length, 529 mm width and each bent at right angles to the side wall of 20 mm or 23.5 mm depth.
  • a stiffness increased by about 100% (about 40 N / mm 2 instead of about 20 N / mm 2 ) and a 50% increase in the natural frequency.
  • the side wall g7, 8 according to FIG. 5 is therefore primarily intended not for a washing machine, but for a tumble dryer, which is characterized by a comparison with a washing machine significantly lower vibration load during operation.
  • the side walls 7, 8 according to FIGS. 6 and 7 are significantly narrower than those according to the Figures 2 . 4 and 5 and thus intended for small depth washing machines and dryers for use in confined spaces.
  • the first and second embossments 9 and 10 are made significantly oval.
  • a second embossment 10 in the form of two sheets 10 instead of an annular second embossing 10 as in all other corresponding figures, a second embossment 10 in the form of two sheets 10, rather corresponding to the third embossment 11 as the first embossment 9 to provide.
  • the invention taught herein makes possible a skin device having a sidewall which has superior stiffness and resonant frequency characteristics as compared to conventional sidewalls, and also provides a useful extension of aesthetics to aesthetically pleasing designs.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Finishing Walls (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (14)

  1. Appareil ménager (1) avec un bâti en forme d'armoire (2), comprenant une pluralité de parois (3, 4, 5, 6, 7, 8) dont au moins une présente une disposition d'estampages (9, 10, 11), dans lequel la disposition d'estampages (9, 10, 11) englobe un premier estampage (9) annulaire vu par le dessus et disposé de manière centrée par rapport à un centre de la paroi (3, 4, 5, 6, 7, 8), un deuxième estampage (10) annulaire vu par le dessus et disposé en dehors du premier estampage (9) de manière essentiellement concentrique par rapport à celui-ci et au moins un troisième estampage (11) en forme de rayures disposé en dehors du deuxième estampage (10), caractérisé en ce que les estampages (9, 10, 11) sont constitués par des bombements (17) et les estampages sont dirigés vers l'intérieur et les estampages (17) présentent des chanfreins (16) sur leurs bords.
  2. Appareil ménager (1) selon la revendication 1, caractérisé en ce que la paroi (3,4, 5, 6, 7, 8) présente avec la disposition des estampages (9, 10, 11) deux troisièmes estampages (11).
  3. Appareil ménager (1) selon la revendication 2, caractérisé en ce que les troisièmes estampages (11) sont, en ce qui concerne le centre, disposés de manière symétrique par rapport à un point.
  4. Appareil ménager (1) selon l'une des revendications 2 et 3, caractérisé en ce qu'un troisième estampage respectif (11) est disposé au-dessus et au-dessous du deuxième estampage (10).
  5. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que les parois (3, 4, 5, 6, 7, 8) comprennent une face avant (3), une face arrière (4), respectivement une face supérieure et une face inférieure (5, 6), ainsi que deux parois latérales rectangulaires (7, 8) et en ce qu'au moins une des parois latérales (7, 8) présente la disposition des estampages (9, 10, 11).
  6. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que le premier estampage (9) est, vu par le dessus, limité par deux ovales concentriques et semblables l'un à l'autre, de sorte qu'un élément annulaire de largeur constante se forme.
  7. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que le deuxième estampage (10) est, vu par le dessus, limité par deux ovales concentriques et dissemblables l'un de l'autre, de sorte qu'un élément annulaire de largeur variable se forme.
  8. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que le troisième estampage (11) est un estampage (11) essentiellement droit vu par le dessus.
  9. Appareil ménager selon l'une des revendications 1 à 7, caractérisé en ce que le troisième estampage (11) est, vu par le dessus, un estampage (11) en forme de segment de cercle disposé de manière essentiellement concentrique par rapport au deuxième estampage (10).
  10. Appareil ménager (1) selon la revendication 9, caractérisé en ce que le troisième estampage (11) est, vu par le dessus, constitué de deux arcs de cercle parallèles l'un à l'autre, dont les extrémités sont reliées, de sorte qu'un élément arqué (11) se forme.
  11. Appareil ménager (1) selon la revendication 9, caractérisé en ce que le troisième estampage (11) est, vu par le dessus, constitué d'un segment de deux ovales dissemblables qui se coupent l'un l'autre, de sorte qu'un élément arqué (11) plus large en un milieu qu'aux extrémités se forme.
  12. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que les estampages (9, 10, 11) représentent, vu par le dessus, ensemble environ 40% de la surface de la paroi (3, 4, 5, 6, 7, 8).
  13. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que le premier estampage (9) présente, à l'intérieur, une surface non estampée (12), dont le diamètre correspond environ à un tiers de la largeur de la paroi (3, 4, 5, 6, 7, 8).
  14. Appareil ménager (1) selon l'une des revendications précédentes, caractérisé en ce que les estampages (9, 10, 11) présentent respectivement une profondeur maximale d'environ le triple au quadruple de l'épaisseur de la paroi (3, 4, 5, 6, 7,8).
EP09798905.7A 2008-12-12 2009-12-07 Appareil électro-ménager présentant une paroi dotée de parties en relief Active EP2376700B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008054574 2008-12-12
DE102009027614A DE102009027614A1 (de) 2009-07-10 2009-07-10 Hausgerät mit einer geprägten Wand
PCT/EP2009/066467 WO2010066653A1 (fr) 2008-12-12 2009-12-07 Appareil électro-ménager présentant une paroi dotée de parties en relief

Publications (2)

Publication Number Publication Date
EP2376700A1 EP2376700A1 (fr) 2011-10-19
EP2376700B1 true EP2376700B1 (fr) 2016-05-25

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Country Status (7)

Country Link
US (1) US10156038B2 (fr)
EP (1) EP2376700B1 (fr)
CN (1) CN102245825B (fr)
EA (1) EA019023B1 (fr)
ES (1) ES2387960T3 (fr)
PL (1) PL2376700T3 (fr)
WO (1) WO2010066653A1 (fr)

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USD638592S1 (en) * 2009-12-18 2011-05-24 Lg Electronics Inc. Clothes dryer
USD642753S1 (en) * 2009-12-30 2011-08-02 Lg Electronics Inc. Washing machine

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US10156038B2 (en) 2018-12-18
WO2010066653A1 (fr) 2010-06-17
CN102245825B (zh) 2013-10-09
EA201170767A1 (ru) 2012-01-30
CN102245825A (zh) 2011-11-16
PL2376700T3 (pl) 2016-11-30
EP2376700A1 (fr) 2011-10-19
ES2387960T3 (es) 2016-11-17
ES2387960T1 (es) 2012-10-04
US20110227462A1 (en) 2011-09-22
EA019023B1 (ru) 2013-12-30

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