EP1467014A1 - Innere Behälter für eine Waschmaschine - Google Patents
Innere Behälter für eine Waschmaschine Download PDFInfo
- Publication number
- EP1467014A1 EP1467014A1 EP03425227A EP03425227A EP1467014A1 EP 1467014 A1 EP1467014 A1 EP 1467014A1 EP 03425227 A EP03425227 A EP 03425227A EP 03425227 A EP03425227 A EP 03425227A EP 1467014 A1 EP1467014 A1 EP 1467014A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inner tub
- flap
- portions
- damper
- rotation
- 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
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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
Definitions
- the present invention relates to an inner containment tub or drum for a top-loading clothes washing machine.
- the inner containment tub is supported rotatably about an essentially horizontal axis and is loaded from the top through an access door in the side wall of the inner containment tub.
- the access door usually consists of two flaps hinged to two opposite edges of a loading aperture in the side wall of the inner tub.
- the flaps of the door comprise, at their free edges, which are the edges not hinged to the inner tub and which can be engaged together, catch means capable of keeping the door closed while the electrical appliance is in operation.
- torsion springs which exert a powerful pressure on the flaps tending to open them. This pressure means that, when the catch connection is released by hand pressure, the door springs open, sometimes violently. This springing open of the flaps of the door not only represents a risk of injury to the fingers of the user but is also very noisy and objectionable.
- the object of the present invention is therefore to provide an inner tub for a clothes washing machine, tumble dryer or washer-dryer having characteristics such as to obviate the problems of the prior art.
- an inner tub for a clothes washing machine, washer-dryer or tumble dryer comprising
- Figure 1 is a plan view of an inner tub according to the invention.
- Figure 2 is a plan view of a detail of an inner tub according to the invention.
- Figure 3 is a side view of the detail shown in Figure 2;
- Figure 4 is a plan view of a detail of an embodiment of the invention.
- Figure 5 is a side view of the detail shown in Figure 4.
- Figure 6 is a cross section taken on the line marked VI-VI in Figure 5;
- FIGS 7, 8 and 9 are cross sections through details of the inner tub in other embodiments of the invention.
- an inner tub for a clothes washing machine of the type mentioned above is indicated as a whole by the reference 1.
- the inner tub 1 comprises a door 2 with at least one, and preferably two flaps 3, 3' connected rotatably, by one or more hinges 4, to edges 5, 5' of a loading aperture 6 in the side wall 7 of the inner tub 1.
- the edges 5, 5' of the loading aperture 6 are preferably opposite each other and essentially parallel to the axis of rotation r of the inner tub 1.
- the flaps 3, 3' of the door 2 are provided, on their free edges 8, 8' remote from the hinges 4, with releasable catch means 9, 10, 11, 12 capable of keeping the door 2 closed while the clothes washing machine is in operation.
- a first flap 3 comprises one or more hooks 9 in the vicinity of its free edge 8, and a second flap 3' defines one or more apertures 10 capable of receiving the hooks 9 when the door 2 is closed and having hook-receiving edges 11 for engaging the said hooks 9 and thus preventing the flaps 3, 3' from opening. It is preferable for the apertures 10, that is the hook-receiving edges 11, similarly to be in the vicinity of the free edge 8 of the second flap 3'.
- the releasable catch means also comprise a release button 12 connected to one of the flaps 3, 3' and preferably provided with a stop edge 13 that abuts against the free edge 8, 8' of the other flap 3, 3' to prevent the flaps 3, 3' moving towards each other and so rotating inwards into the inner tub 1.
- the inner tub 1 also comprises elastic means, particularly torsion springs 14, which exert an opening pressure on the flaps 3, 3' in such a way that the flaps 3, 3' spring open, exposing the loading aperture 6, when the releasable catch means 9, 10, 11, 12 of the flaps 3, 3' are released by actuating the button 12.
- elastic means particularly torsion springs 14, which exert an opening pressure on the flaps 3, 3' in such a way that the flaps 3, 3' spring open, exposing the loading aperture 6, when the releasable catch means 9, 10, 11, 12 of the flaps 3, 3' are released by actuating the button 12.
- the torsion springs 14 influence the flaps 3, 3' in a known manner, such as to elastically resist any movement of the flaps 3, 3' inwards into the inner tub 1.
- the inner tub 1 also comprises at least one, and preferably two dampers 15 capable of slowing the movement of the flaps 3, 3' during their opening.
- the said dampers 15 comprise two portions 16, 17 whose relative movement is damped and which are connected, one to the inner tub 1, and the other to the respective flap 3, 3', with the interposition of at least one mechanism 18, 19 producing a drive ratio ( ⁇ A / ⁇ C ) > 1, in such a way that the relative velocity ⁇ A between the two portions 16, 17 is greater than the relative velocity ⁇ C between the respective flap 3, 3' and the inner tub 1.
- the damper 15 is a rotary damper
- the relative movement between the two portions 16, 17 is a rotary movement
- the two portions 16, 17 are connected in rotation, one to the inner tub 1, and the other to the flap 3, 3', with the said ratio drive mechanism 18, 19 interposed between them, in such a way that the relative angular velocity ⁇ A between the two portions 16, 17 is greater than the relative angular velocity ⁇ C between the flap 3, 3' and the inner tub 1.
- the damper 15 comprises a fixed portion 16 connected so as to be integral in rotation with the inner tub 1, and a rotatable portion 17 connected in rotation, by the ratio drive mechanism 18, 19, to the flap 3, 3'.
- the drive wheel 19 is essentially in the form of a sector of a circle corresponding to the maximum angle of rotation of the flap 3, 3' relative to the inner tub 1.
- the drive wheel 19 is advantageously connected coaxially to a pin 20 integral with the flap 3, 3', which forms, together with the appropriate seats 21 connected to the side wall 7 of the inner tub 1, the abovementioned hinges 4.
- the pin 20 is formed by complete or partial circular bending of the edge of the flap 3, 3' itself, defining an internal cavity 22 which extends effectively along the full length of the pin 20.
- the torsion springs 14 comprise a torsion bar 23, housed inside the cavity 22 of the pin 20 and provided with two transverse ends 24, one resting against the inner tub 1, preferably against its side wall 7, and the other against the flap 3, 3' (Fig. 2).
- the damper 15 is fixed to the inner tub 1, preferably to its side wall 7, at a distance from the axis of rotation 20 of the flap 3, 3'.
- the damper 15 comprises a housing 16 that forms the abovementioned fixed portion 16 and defines internally an essentially cylindrical cavity which receives, in such a way that it can rotate, a spindle 17 that forms the abovementioned rotatable portion 17.
- the driven wheel 18 which meshes with the drive wheel 19 is connected coaxially to the spindle 17.
- the said slowing means comprise a film of silicone.
- the stop edge 13 of the button 12 disengages the free edge 8 of the flap 3', allowing the free edges 8, 8' of the flaps 3, 3' to move towards each other to the point at which the hooks 9 of the first flap 3 come free of the hook-receiving edges 11 of the second flap 3', and the latter is then pushed, by the torsion springs 14, into the open position.
- the gear pair 18, 19 transmits the rotational movement of the flap 3, 3' to the rotatable portion, that is the spindle 17, of the damper 15, multiplying it in such a way that the relative angular velocity ⁇ A between the spindle 17 and the housing 16 of the damper is greater than the relative angular velocity ⁇ C between the respective flap 3, 3' and the inner tub 1. Consequently the spindle 17 rotates through a greater angle than the angle of rotation of the flap 3, 3', dissipating a greater amount of kinetic energy for the same size of damper and torsion springs 14. Consequently the movement of the flap 3, 3' is slowed down considerably.
- the inner tub according to the invention has numerous advantages.
- the arrangement of the damper 15 at a distance from the axis of rotation 20 of the flaps 3, 3', and hence at a distance from the hinges 4, allows the dampers 15 to be fitted to existing inner tubs without necessitating major modifications of their structure.
- the arrangement of the torsion bars in the internal cavities 22 of the pins 20 allows them to be positioned in the region of the ratio drive mechanism and near the damper without interference between them.
- the fixed portion 16 out of the two portions 16, 17 of the damper 15 is connected so as to be integral in rotation with the flap 3, 3' and the rotatable portion 17 out of the said two portions is connected in rotation, by the said ratio drive mechanism 18, 19, to the inner tub 1, which is the reverse of the kinematic flow path of the embodiment described earlier.
- the damper 15 is fixed to the side wall 7 of the inner tub 1 at the end of the pin 20 of the flap 3, 3', in such a way that the drive wheel 19 can be connected directly to the end of the pin 20 without major modifications to the inner tub 1 and to the flaps 3, 3'.
- the torsion bar 23 is inserted into the pin 20 at the same end thereof, in which one transverse end 24 thereof bears against the side wall 7 of the inner tub and the other against the flap 3, 3' approximately halfway along the pin 20.
- the drive wheel 19 is preferably in the form of a sector of a circle so as to not to project, when the flap 3, 3' is closed, into the inner tub 1 ( Figure 3).
- dampers 15 and 15' there are two dampers 15 and 15' whose rotatable portions 17 are connected to a single driven wheel 18.
- the dampers 15, 15' and the ratio drive mechanism, i.e. the drive wheel 19 and driven wheel 18, are preferably arranged approximately halfway along the pin 20 and therefore centrally with respect to the width of the side wall 7 and with respect to the width of the flaps 3, 3'.
- FIGS 6 to 9 show further advantageous examples of dampers that can be used in the present invention.
- Figure 6 shows for example an embodiment in which a ring or strip of foam rubber 25, for example of "Vulkolan” type, is wound around an elastic expansion band 32 connected to the spindle 17.
- This packet consisting of spindle 17, elastic band 32 and foam rubber 25, is inserted into the housing 16 in such a way that the foam rubber ring 25 is pushed elastically, by a predetermined force, against the inside surface of the housing 16.
- the damper is advantageously sealed by plates 33 with suitable seals 34.
- the slowing means of the damper 15 takes the form of a compressed layer of foam rubber 25.
- the compressed layer of foam rubber 25 is further coated or impregnated with lubricating grease.
- the slowing means of the damper 15 consist of a predetermined number of hollow rubber cylinders 26, in which each of the cylinders 26 is arranged between two plates 27, preferably circular and integral in rotation with the spindle 17.
- the damper can be calibrated by varying the number of rubber cylinders 26 and by their diameter and total length which determine the degree of radial and axial compression of the cylinders 26, once inserted into the housing 16 of the damper 15.
- the slowing means comprise a cam 31 integral with the spindle 17 and a hollow cylinder 28 of flexible material, for example rubber, connected integrally to the housing 16, for example by means of projections 29 that engage in corresponding grooves 30, in which the cam 31 is fitted with interference inside the hollow cylinder 28.
- the damper is a translational damper, in which the relative movement between the two portions (16, 17) is a translational movement.
- the ratio drive mechanism takes the form of friction, belt, chain and suchlike drives.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03425227A EP1467014B1 (de) | 2003-04-11 | 2003-04-11 | Innere Behälter für eine Waschmaschine |
ES03425227T ES2269959T3 (es) | 2003-04-11 | 2003-04-11 | Cuba interior para maquinas lavadoras de ropa. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03425227A EP1467014B1 (de) | 2003-04-11 | 2003-04-11 | Innere Behälter für eine Waschmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1467014A1 true EP1467014A1 (de) | 2004-10-13 |
EP1467014B1 EP1467014B1 (de) | 2006-08-16 |
Family
ID=32865117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03425227A Expired - Lifetime EP1467014B1 (de) | 2003-04-11 | 2003-04-11 | Innere Behälter für eine Waschmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1467014B1 (de) |
ES (1) | ES2269959T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1582618A1 (de) | 2004-04-02 | 2005-10-05 | CANDY S.p.A. | Von oben beladbare Waschmaschine |
US7257862B2 (en) * | 2003-06-26 | 2007-08-21 | Itw Industrial Components S.R.L. | Decelerating device for insertion between two relatively rotating members, in particular a drum and an oscillating door for loading the drum in a top-loaded washing machine |
US8246872B2 (en) | 2008-12-22 | 2012-08-21 | The Gates Corporation | Method for making composite article with expandable elastomer in compression |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515878C1 (de) * | 1995-04-29 | 1996-11-28 | Miele & Cie | Scharnier für den Gehäusedeckel einer mantelbeschickbaren Wäschebehandlungsmaschine |
FR2793265A1 (fr) * | 1999-05-04 | 2000-11-10 | Electrolux Zanussi Elettrodome | Lave-linge a chargement par le dessus |
FR2811009A1 (fr) * | 2000-07-03 | 2002-01-04 | Ciapem | Dispositif amortisseur d'ouverture, notamment pour machine a laver domestique |
-
2003
- 2003-04-11 ES ES03425227T patent/ES2269959T3/es not_active Expired - Lifetime
- 2003-04-11 EP EP03425227A patent/EP1467014B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515878C1 (de) * | 1995-04-29 | 1996-11-28 | Miele & Cie | Scharnier für den Gehäusedeckel einer mantelbeschickbaren Wäschebehandlungsmaschine |
FR2793265A1 (fr) * | 1999-05-04 | 2000-11-10 | Electrolux Zanussi Elettrodome | Lave-linge a chargement par le dessus |
FR2811009A1 (fr) * | 2000-07-03 | 2002-01-04 | Ciapem | Dispositif amortisseur d'ouverture, notamment pour machine a laver domestique |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7257862B2 (en) * | 2003-06-26 | 2007-08-21 | Itw Industrial Components S.R.L. | Decelerating device for insertion between two relatively rotating members, in particular a drum and an oscillating door for loading the drum in a top-loaded washing machine |
EP1582618A1 (de) | 2004-04-02 | 2005-10-05 | CANDY S.p.A. | Von oben beladbare Waschmaschine |
US8246872B2 (en) | 2008-12-22 | 2012-08-21 | The Gates Corporation | Method for making composite article with expandable elastomer in compression |
US9731438B2 (en) | 2008-12-22 | 2017-08-15 | Gates Corporation | Composite article with expandable elastomer in compression |
Also Published As
Publication number | Publication date |
---|---|
ES2269959T3 (es) | 2007-04-01 |
EP1467014B1 (de) | 2006-08-16 |
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