EP0604262B1 - Schwingungsdämpfer eines Laugenbehälters einer Waschmaschine - Google Patents

Schwingungsdämpfer eines Laugenbehälters einer Waschmaschine Download PDF

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Publication number
EP0604262B1
EP0604262B1 EP19930402958 EP93402958A EP0604262B1 EP 0604262 B1 EP0604262 B1 EP 0604262B1 EP 19930402958 EP19930402958 EP 19930402958 EP 93402958 A EP93402958 A EP 93402958A EP 0604262 B1 EP0604262 B1 EP 0604262B1
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EP
European Patent Office
Prior art keywords
plate
articulation
pads
machine
fixed
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.)
Expired - Lifetime
Application number
EP19930402958
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English (en)
French (fr)
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EP0604262A1 (de
Inventor
Hervé Pont
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.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
Original Assignee
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Publication date
Application filed by Compagnie Industrielle dAppareils Menagers SA CIAPEM filed Critical Compagnie Industrielle dAppareils Menagers SA CIAPEM
Publication of EP0604262A1 publication Critical patent/EP0604262A1/de
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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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations

Definitions

  • the present invention relates to a device for damping vibrations of a tank in a washing machine and / or drying the laundry, as well as a machine equipped with at least one of these devices.
  • a washing machine includes a drum containing the laundry, immersed in a tank and a drum drive device (or basket) rotating in this tank.
  • a drum drive device or basket rotating in this tank.
  • the mass of irregularly distributed laundry forms an imbalance which causes strong vibrations of the assembly.
  • the tank - basket - drive device assembly is mounted mobile, suspended or placed (or both at the same time) on the machine structure .
  • the first is to use one or more tube shock absorbers.
  • These comprise a piston constituted by a cylindrical friction pad sliding in a smooth tube whose walls are greased.
  • the linear friction force is given by the clamping pressure between the wiper and the tube.
  • This piston is stretched between the body and the tank by means of silentblocs or rubber sleeves giving the shock absorber a certain degree of freedom, the tubes tilting in the direction of friction.
  • this control of the dampings is really effective only in the plane perpendicular to the axis of rotation of the drum, this type of dampers not making it possible to absorb the displacement of the tank in the plane parallel to this axis of rotation. .
  • shock absorbers minimizes the space required between the tank and the body, the connections made of rubber silentblocs do not allow their own damping and the assembly is relatively cost.
  • the pistons age badly, the fat they contain flows to the bottom of the tube, they degrade and lose their characteristics.
  • a third solution consists in using shock absorbers with thin plates and guided shoes.
  • the plate is fixed to the tank and the pads are mounted on a rigid wire which is U-shaped, the base of which is enclosed in a rubber tunnel fixed to the base of the washing machine. Most of the friction is achieved by the shoe guided on the plate. The depreciation thus produced is far too rigid and is only carried out in one plane. On the other hand, the friction by rotation of the rigid wire fitted into the rubber tunnel secured to the base of the machine is poorly controlled.
  • the deflections of the tank are damped in all directions and the friction force in the plane of the plate is a function of the materials used for the pads and the force of tightening applied by the spring wire.
  • the cost price of such a device is lower than that of hydraulic shock absorbers or tubes.
  • a French patent application FR-A-2 374 457 discloses a damping device for a washing machine having more than one degree of freedom.
  • the device according to the present invention overcomes the drawbacks of the solutions proposed so far.
  • the vibration damping device according to the invention is produced as described by claim 1.
  • the forces on the plates can be directed in all directions and the various friction forces can be dosed independently, this makes it possible to significantly reduce the horizontal components of the forces at the foot of the washing machine.
  • the reduction of vibrations of the whole machine allows a gain in acoustic comfort for the user.
  • the cost price is lower than the device of the tube shock absorbers of the first solution mentioned and its reliability higher.
  • FIG. 1 an example of a possible embodiment of a device according to the invention
  • a damping means consists of a spring element, here a spring wire not shown in shape of U, the base of which is fixed to the movable element, that is to say the tank, and the two ends of the arms of which are each articulated on friction shoes, not shown.
  • These pads are pressed on either side of the plate 6 by the clamping force of the spring wire
  • These pads are guided on the plate 6 thanks, for example, to the flange 7 formed by the folding down on one of the faces of the plate 6 which delimits a corridor in which the shoe will slide. Only one shoe can be guided, the elastic rigidity of the spring wire guiding the other shoe. This linear depreciation constitutes the first degree of freedom of depreciation achieved by the invention.
  • each of the pads on the plate is provided in its center with a cavity welcoming the ends of the spring wire and allowing it to pivot in this cavity.
  • the ends of the spring wire exert pressure on each of the pads through these joints.
  • the plate 6 is secured to the stationary part of the machine,
  • the plate 6 is fixed to a spherical part 31 rotating around a first axis 32 and around a second axis not shown, for example, perpendicular to the previous one and to the plane of Figure 1.
  • the spherical part is placed between two jaws 33,34 fixed for example on a base 35 fixed to the fixed or mobile part of the machine.
  • a rod 36 passes through the jaws 33, 34 and the spherical part 31 along the first axis 32.
  • the rod 36 is locked at a first end against a first jaw 33 by means of a crimping washer for example.
  • a spring system 37 is placed for example between a washer fixed to the latter and the second jaw 34 so that the two jaws 33, 34 clamp the spherical part 31.
  • a material 38 with a given coefficient of friction is placed between the jaws 33, 34 and the spherical part 31.
  • Conical openings 39 are made in the spherical part 31 around the rod 36 from the axis of symmetry of the plate 6 so as to allow rotation of the spherical part 31 around the second axis not shown.
  • the plate 6 can therefore rotate around the two aforementioned axes with a friction force, these two rotations constituting the two degrees of damping in rotation.
  • Figure 1 shows a possibility of articulation with at least two degrees of freedom, but it is obvious that a device according to the invention using any other articulation of this type does not depart from the scope of the present invention.
  • the damping element is here a plate, but any other type of damper such as, for example, pistons, plates with non-guided pads, friction tubes or springs, can be used in combination with a joint has at least two degrees of freedom without departing from the scope of the present invention.
  • the damping device according to the invention can be mounted on the machine so that its damping means is fixed on the mobile part of the machine and its articulation on the stationary part or vice versa.
  • the present invention applies to washing machines to be introduced from the top or front but can be extended to all machines undergoing vibrations due to the rotational movements of an irregularly distributed mass thereby having a so-called yaw movement and requiring a device for damping these vibrations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Centrifugal Separators (AREA)

Claims (10)

  1. Vibrations-Dämpfungsvorrichtung, die mit einer Seite am Bottich einer Waschmaschine und mit der anderen Seite an einem unbeweglichen Teil dieser Maschine befestigt ist und die mindestens drei Freiheitsgrade aufweist, wobei ein erstes, lineares Dämpfungsmittel eine Gleitschuh-Reibungsplatte (6) aufweist, die mit zweiten, in Drehrichtung wirkenden Dämpfungsmitteln zusammenwirkt, die ein Gelenk mit mindesten zwei Freiheitsgraden aufweisen, dadurch gekennzeichnet, daß das Gelenk mit mindestens zwei Freiheitsgraden aus einem kugelförmigen Bereich (31) besteht, der an der Platte (6) befestigt und zwischen zwei Backen (33, 34) eingeklemmt ist, wobei eine Stange (36) die Backen (33, 34) und den kugelförmigen Bereich (31) durchquert und eines der Enden der Stange (36) an einer ersten Backe (33) und das andere Ende über ein Federsystem an der zweiten Backe (34) befestigt ist, um das Einklemmen des kugelförmigen Bereichs (31) zu gewährleisten, daß ein Material (38) mit gegebenem Reibungskoeffizienten zwischen den beiden Backen (33, 34) und dem kugelförmigen Bereich (31) angeordnet ist, und daß der kugelförmige Bereich (31) um eine erste Achse (32) entlang der Stange (36) und um eine zweite Achse drehbar ist, wobei konische Öffnungen (39) im kugelförmigen Bereich (31 ausgebildet sind, um seine Drehung um diese zweite Achse zu ermöglichen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kräfte in Bezug auf die Dämpfungen in Drehrichtung geringer als die Kraft in Bezug auf die lineare Dämpfung sind.
  3. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kräfte in Bezug auf die Dämpfungen in Drehrichtung untereinander unterschiedlich sind.
  4. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das mit dem Gelenk mit mindestens zwei Freiheitsgraden zusammenwirkende Dämpfungsmittel ein U-förmiges Federelement aufweist, dessen Enden die Platte (6) über geführte Reibungsschuhe zwischen sich einklemmen.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Gleitschuhe auf der Platte (6) durch den Rand (7) dieser Platte geführt werden, der auf einer Seite der Platte (6) umgebogen ist.
  6. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Gleitschuhe auf einer ihrer Seiten und in ihrer Mitte einen Hohlraum aufweisen, der eine Schwenkbewegung dieser Gleitschuhe um die Enden des Federdrahts ermöglicht.
  7. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Dämpfungsmittel am beweglichen Teil und das Gelenk am unbeweglichen Teil der Maschine befestigt ist.
  8. Vorrichtung nach einem beliebigen der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Dämpfungsmittel am unbeweglichen Teil und das Gelenk am beweglichen Teil der Maschine befestigt ist.
  9. Waschmaschine, dadurch gekennzeichnet, daß sie mindestens eine Vibrations-Dämpfungsvorrichtung gemäß einem der vorhergehenden Ansprüche enthält.
  10. Waschmaschine nach Anspruch 9, dadurch gekennzeichnet, daß sie mehrere solcher Vibrations-Dämpfungsvorrichtungen besitzt, die in verschiedenen Richtungen wirksam sind.
EP19930402958 1992-12-22 1993-12-07 Schwingungsdämpfer eines Laugenbehälters einer Waschmaschine Expired - Lifetime EP0604262B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215485A FR2699561B1 (fr) 1992-12-22 1992-12-22 Amortisseur de vibrations d'une cuve de machine à laver.
FR9215485 1992-12-22

Publications (2)

Publication Number Publication Date
EP0604262A1 EP0604262A1 (de) 1994-06-29
EP0604262B1 true EP0604262B1 (de) 1997-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930402958 Expired - Lifetime EP0604262B1 (de) 1992-12-22 1993-12-07 Schwingungsdämpfer eines Laugenbehälters einer Waschmaschine

Country Status (4)

Country Link
EP (1) EP0604262B1 (de)
DE (1) DE69311521T2 (de)
ES (1) ES2105178T3 (de)
FR (1) FR2699561B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898913B1 (fr) * 2006-03-27 2008-05-23 Brandt Ind Sas Dispositif amortisseur pour une machine a laver et/ou secher le linge
ES2592571B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación
ES2592572B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación de vibraciones, aparato electrodoméstico y procedimiento de fabricación de dicho dispositivo
ES2592570B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación
CN108505286A (zh) * 2018-04-23 2018-09-07 佛山市旅行青蛙科技有限公司 一种洗衣机
CN108252019A (zh) * 2018-04-23 2018-07-06 佛山市旅行青蛙科技有限公司 一种手动洗衣机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2027928A1 (de) * 1969-01-08 1970-10-02 Candy Spa
GB1355178A (en) * 1970-03-02 1974-06-05 Hoover Ltd Washing and/or centrifugal extraction machines
FR2374457A1 (fr) * 1976-12-20 1978-07-13 Houdaille Lelaurain Sa Perfectionnements aux dispositifs dits de suspension et d'amortissements pour des machines a laver

Also Published As

Publication number Publication date
DE69311521D1 (de) 1997-07-17
FR2699561A1 (fr) 1994-06-24
EP0604262A1 (de) 1994-06-29
FR2699561B1 (fr) 1995-01-20
DE69311521T2 (de) 1997-10-02
ES2105178T3 (es) 1997-10-16

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