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
• • 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
  • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis

Definitions

• the invention relates to an articulation device for articulating a friction damper on a washing unit or on a machine frame of a washing machine with a spin cycle.
• the invention has for its object to provide a linkage device for linking a friction damper of a washing machine, which ensures the simplest possible assembly and at the same time absorbs the forces occurring as effectively as possible.
• the object is solved by the features of claim 1.
• the essence of the invention is to snap a support body onto the pin which is received in an eye of the friction damper, so that a better axial fixation of the eye along the pin is ensured.
• FIG. 1 shows a drum washing machine in a schematic representation in a northern view with friction dampers and associated articulation devices according to a first embodiment: exemplary embodiment
• FIG. 4 shows a perspective view of the washing unit according to FIG. 1,
• FIG. 5 is a perspective view of the articulation device according to FIG. 1,
• FIG. 6 shows a perspective view of the support body according to FIG. 1 belonging to the articulation device
• FIG. 7 a representation corresponding to FIG. 2 of an articulation device according to a second exemplary embodiment
• Fig. 9 is a Fig. 4 corresponding representation of a linkage device according to a second embodiment
• Fig. 10 is a Fig. 6 corresponding representation of a linkage device according to a second embodiment.
• a linkage device is described below with reference to FIGS. 1 to 6.
• a drum washing machine 1 has a vibration-capable washing unit 2 with a corresponding housing 3, in which a washing drum (not shown in detail) is rotatably mounted.
• the vibrating washing unit 2 is suspended from a washing machine housing 5 supported on a machine frame 4 formed by a base frame by means of helical tension springs 6.
• the tension springs 6 are on the one hand attached to eyelets 7 which are fastened in the upper area of the washing unit 2. On the other hand, they are hung on eyelets 8, on the side walls
• friction dampers 10 are also arranged, which are known, for example, from EP 0 336 176 B1 (corresponds to US 4,934,493).
• Each friction damper 10 has a housing 11.
• the housing 11 consists essentially of a cylindrical tube 12 which is closed at one end by means of a base 13.
• a joint bushing designated as an eye 14, is attached, by means of which the friction damper
• the respective friction damper 10 also has a plunger 18, which likewise carries an articulated sleeve designed as an eye 19 at its outer end.
• the plunger 18 and the housing 11 have a common central longitudinal axis 20 which runs perpendicular to the pivot axis 16.
• the plunger 18 is displaceably displaceable in the housing 11 by friction linings 22 fastened to the inside end 21 of the housing 11.
• the eye 19 of the plunger 18 is attached to the machine frame 4 via a linkage device 23 such that the friction damper 10 can be pivoted about a pivot axis 24 relative to the machine frame 4, which runs parallel to the drum axis of rotation 17.
• the articulation device 23 is described in more detail below.
• This has a carrier plate 25, to which, in the region of one end of the plate 25, there is connected a carrier wall 26 which is formed in one piece with the carrier plate 25 and which projects essentially perpendicularly from the carrier plate 25.
• a cylindrical pin 28 which is formed in one piece with the support wall 26 and has a pin longitudinal axis 29 which coincides with the pivot axis 24.
• the axis 29 runs essentially parallel to the carrier plate 25.
• the free end 30 of the pin 28 is essentially flush with the associated free end 31 of the carrier plate 25. This is not absolutely necessary.
• the pin 28 is hollow and has a cross-shaped support structure 32 which defines four longitudinal channels 33.
• the locking lugs 34 In the area of two channels 33 located opposite one another, in the area of the end 30 there are two radially outwardly projecting locking lugs 34 which are connected to corresponding xiblen locking webs 35 are provided.
• the locking lugs 34 have contact surfaces 36 facing the support wall 26 and inclined surfaces 37 facing the free end of the pin 28.
• the locking lug 34 can be pivoted elastically inwards by a force acting in the direction of the axis 29.
• the part shown in Fig. 5 is made as an injection molded part made of plastic and formed in one piece.
• a support body 38 shown in FIG. 6 can be snapped onto the pin 28. This has a recess 39, the diameter of which is slightly larger than the outer diameter of the pin 28.
• the support body 38 has a flat contact surface 40 on the side facing the support wall 26.
• the radial width of the support body 38 is essentially chosen so that the ring 38 projects as far in the radial direction over the pin 28 as the upper part of the support wall 26 relative to the pin 28, namely by a width B.
• a radially projecting support web 41 which merges into a base 42.
• the base 42 has outwardly projecting wedge-shaped bevels 43.
• the carrier plate 25 there is a negative recess 44 corresponding to the base 42 with corresponding oblique recesses 45 which cooperate with the bevels 43 to form a tongue and groove connection.
• a pin 46 is provided, on which a transversely extending bolt 47, which projects in both directions with respect to the pin 46, is provided.
• the distance between the underside of the carrier plate 25 and the top of the bolt 47 is slightly larger than the thickness of the base plate of the machine frame 4.
• an elongated hole recess 48 is provided corresponding to the contour of the bolt 47 and the pin 46, through which the pin 46 can be inserted and Can be locked by 90 ° in the plane in the manner of a bayonet twist lock.
• the bayonet twist lock is self-locking.
• the bolt 47 is pushed through the associated recess 48 in the machine frame 4 and rotated by 90 ° in the plane, so that the articulation device 23 assumes the position shown in FIG. 2.
• the locking lugs 34 are pressed inwards and, after the eye 19 has been completely pushed open, project outwards again.
• the articulation device 23 can be used universally and only requires a corresponding recess 48 in the machine frame 4 on the part of the manufacturer of the washing machine 1.
• the friction damper 11 can be attached without tools.
• the forces exerted on the articulation device by the plunger 18 are optimally transmitted to the machine frame 4.
• the articulation device 15 has essentially the same structure as the articulation device 23.
• the support plate 25 is formed by the housing 3 of the washing unit 2, from which a base-like support wall 53 projects outwards.
• the pin 54 is provided, which has the same structure as the pin 28.
• the associated support body 55 has the identical shape as the support body 38.
• a base 56 is below the free end of the pin 54 with a recess 57 is provided, which corresponds to the shape of the recess 44.
• the eye 14 is pushed onto the pin 54 and then the support body 55 is snapped onto the pin 54, the support body 55 being connected to the base 56 via a corresponding tongue and groove connection.
• the difference to the articulation device 23 is that the support wall 53 and the base 56 are molded onto the housing 3. Otherwise, the structure and mode of operation are identical. Due to the one-piece construction of pin 28, support plate 25, pin 46 and bolt 47, the noise behavior is very favorable. The connection between the machine frame 4 and the carrier plate 25 is very stable. Overall, the attachment is inexpensive and easy to assemble and disassemble.
• the friction damper 10 can be easily installed in the washing machine 1. During assembly, it will often be the case that the friction damper 10 is already connected to the articulation device 23 by the manufacturer of the friction damper 10. The manufacturer of the washing machine thus only needs to screw the damper 10 together with the articulation device 23 into the corresponding recess 48.
• FIGS. 7 to 10 A second exemplary embodiment of the invention is described below with reference to FIGS. 7 to 10. Structurally identical parts are given the same reference numerals as in the first embodiment. example, to the description of which reference is hereby made. Structurally different, but functionally similar parts are given the same reference numerals followed by a.
• the central difference from the first exemplary embodiment is that the support body 38a shown in FIG. 10 is only ring-shaped and has no support web 41. Accordingly, no recess 44 needs to be provided in the carrier plate 25.
• the function of the support bodies 38a and 55a is further such that they fix the eyes 19 and 14 and support the collar 51. Only the free end of the pins 28 and 54 is not supported with respect to the carrier plate 25. If the material of the articulation device is selected appropriately and the forces exerted by vibrations of the washing unit 2 are not too great, this is sufficient.
• the articulation devices described in the two preceding exemplary embodiments can also be combined with one another.
• the linkage device 23 can thus be fastened in a corresponding recess in the outer wall of the washing unit 2.
• the articulation device 15 can be formed in one piece on the base plate of the machine frame 4. The same applies to the use of the support bodies 38, 38a, 55, 55a. These can be combined with the previously described articulation devices.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
• Vibration Dampers (AREA)
• Fluid-Damping Devices (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34745137

Family Applications (1)

Country Status (5)

Cited By (3)

Families Citing this family (2)

Citations (5)

• 2004
  • 2004-01-27 DE DE102004003924A patent/DE102004003924A1/de not_active Withdrawn
  • 2004-12-02 EP EP04821174A patent/EP1709233B1/de not_active Not-in-force
  • 2004-12-02 CN CNB2004800410513A patent/CN100529238C/zh not_active Expired - Fee Related
  • 2004-12-02 DE DE502004007411T patent/DE502004007411D1/de active Active
  • 2004-12-02 WO PCT/EP2004/013696 patent/WO2005071156A1/de active IP Right Grant
  • 2004-12-02 AT AT04821174T patent/ATE398698T1/de not_active IP Right Cessation

Patent Citations (5)

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