EP0131985B1 - Device for closing the loading aperture of a washing machine - Google Patents

Device for closing the loading aperture of a washing machine Download PDF

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Publication number
EP0131985B1
EP0131985B1 EP84200890A EP84200890A EP0131985B1 EP 0131985 B1 EP0131985 B1 EP 0131985B1 EP 84200890 A EP84200890 A EP 84200890A EP 84200890 A EP84200890 A EP 84200890A EP 0131985 B1 EP0131985 B1 EP 0131985B1
Authority
EP
European Patent Office
Prior art keywords
door
tub
loading
aperture
lever
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
Application number
EP84200890A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0131985A1 (en
Inventor
Silvano Maretti
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0131985A1 publication Critical patent/EP0131985A1/en
Application granted granted Critical
Publication of EP0131985B1 publication Critical patent/EP0131985B1/en
Expired legal-status Critical Current

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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
    • D06F37/26—Casings; Tubs
    • D06F37/28—Doors; Security means therefor

Definitions

  • This invention relates to a device for closing the loading and unloading aperture of a front-loading washing machine, particularly for domestic use, in which a stationary structure elastically supports, in a damping manner, a tub containing a driven rotatable drum, and in which the tub and drum have aligned apertures for loading and unloading the laundry.
  • the drum In known washing machines, the drum is cantilever-supported by the tub, so that because of load eccentricity considerable transverse deformations occur at the very high centrifuging speeds currently used.
  • USA patent 2,105,248 describes a washing machine in which the drum lateral aperture can be closed by a plate idly supported by a swivelling arm hinged to the outer washing machine casing, which here acts as the tub.
  • This plate is elastically applied against the contour of the aperture by a spring disposed in a door which closes the aperture of the outer casing and can be locked in situ by a handwheel.
  • this device requires various manoeuvres for introducing and extracting the laundry into and from the drum, and in addition transfers the oscillations and jolting movements directly to the outer casing of the washing machine and thus to the floor.
  • the machine in question is unsuitable for operating at centrifuging speeds of 1000 r.p.m. or more.
  • a further example is contained in USA patent 2,650,490, in which a washing machine comprising the features of the preamble of claim 1 has a plate which is supported idly by a swivelling cross-member hinged and constrainable to the forward wall of the tub and which is inserted into the loading aperture of the drum.
  • This device has a series of drawbacks, including the fact that it does not ensure perfect closure of the loading aperture.
  • the improved device of the invention ensures perfect door closure even under the most difficult operating conditions, prevents the transmission of jolts and oscillations to the washing machine outer structure, offers a further support point for the drum, and enables the door to be opened by the user without force, by simple and natural movements.
  • the improved device which is characterized essentially in that the tub loading and unloading aperture is closable by a door which is hinged to said tub and can be coupled to this latter by insertion engagement under the action of a lever supported by the arm, said rotatable door supporting an idly mounted disc element which is inserted into the loading and unloading aperture of the drum so as to oppose transverse movements of this latter which exceed given limits.
  • the front-loading washing machine 1 comprises an outer stationary load-bearing structure covered by a housing 2. On its front it comprises an opening 3 closed by a cover 4 which can turn about a lower horizontal axis.
  • the tub In a position corresponding with the opening 3, the tub comprises an aperture 6 surrounded by an elastic seal ring 7 fixed to the tub.
  • the tub rotatably supports in its interior in the conventional cantilever manner a perforated drum 9 provided with a circular aperture 8 aligned with said aperture 6.
  • the laundry is loaded into and unloaded from the drum through the opening 3, the aperture 6, and the aperture 8.
  • the aperture 6 of the tub 5 can be closed by a door 10 rotatably supported by an arm 11 which will be described in detail hereinafter.
  • the door in question rotatably supports a sheet metal disc element 12 having a substantially cylindrical contour 13 of diameter slightly less than the diameter of the circular aperture 8.
  • the disc element 12 is arranged for insertion into the aperture 8, and peripherally comprises a turned-over rim 14, of which the end is applied against the contour of said aperture 8.
  • the sheet metal element 12 is made rigid in any known manner with a plate 15 of lesser diameter but greater rigidity, which is rigid with a pin 16 rotatably mounted in a bearing 17.
  • the bearing is mounted in the hub 18 of the door 10.
  • the disc in question comprises a series of pins 24 fixed in a circular arrangement parallel to the axis of rotation of the element 12 and each having a radial projection 25 which is disposed slackly in an annular channel 26 obtained by fixing to the door 10 a sheet metal ring 27 of Z cross-section.
  • the gasket 7 cooperates with the conical part of the contour 23 of the disc 22 to create an effective peripheral seal towards the outside, while the internal seal is provided by the elastic edge of the annular gasket 21, which for this purpose adheres to the inner contour of the disc 22.
  • This special coupling arrangement between the disc 22 and door 10 is to reduce the tangential sliding between the disc and gasket 7 when closing and opening the door, and thus to increase the gasket life.
  • the door 10 is rotatably supported by an arm 11 hinged to the front wall 30 of the tub 5 so that it can be swivelled horizontally about the hinges 80.
  • the support for the door 10 can be provided by means of a pin 31 fixed to said door, a bearing 32 mounted on the pin 31, and a hub 33 fixed to the arm 11.
  • a lever 35 is pivoted at 34 on the arm 11 and comprises a raised part 36 (to be gripped by the hand) followed by a sunken end 96 which is disposed below a guide plate 37 fixed to the outer wall of the door 10.
  • the lever 35 is rigid with a short arm 38 which terminates in a transverse pin 39.
  • the pin penetrates into an axial slot 40 in a bar 41, and acts as a stop for one end of a compression spring 42 mounted on said bar.
  • the other end of the spring 42 rests against a fork 43 rigid with the bar 41.
  • the fork is hinged to an appendix of a pawl 44, which is hinged at 45 to the arm 11.
  • a locking peg 46 rigid with the door 10 is arranged to cooperate with said pawl.
  • the door 10 Distributed along its periphery, the door 10 comprises a set of three equidistant projections 47 of limited angular and axial extension and which are wedge-shaped over a certain portion (see Figure 7). Axially and angularly spaced apart from the projections 47, the door comprises three radical projections 90 of wedge-shaped outer surface.
  • the tub 5 On its front side, and extending completely around its aperture 6 but spaced-apart from the corresponding wall 30, the tub 5 supports a ring 50 which surrounds the door 10 and is shaped in such a manner as to comprise a set of three equidistant radial projections 52, and a set of three wedge-shaped radial projections 91 which are equidistant from each other and from said projections 52. Between the projections 52 and 91 there are recesses 92 and 93 which enable the door 10 to be moved against the aperture 6 of the tub 5, i.e. in correspondance with the annular interspace or channel 70 existing between the ring 50 and the front wall 30 of the tub 5 (see Figures 1A and 7).
  • the arm 11 is in its outwardly rotated position so that the door 10 and the other members carried by said door allow free access to the drum 9, which can thus be loaded with laundry.
  • the user rotates the arm 11 about the vertical hinges 80 so that the disc element 12 becomes inserted into the aperture 8 of the drum 9, and the door 10 into the aperture 6 of the tub, to assume the position shown in Figures 1 and 2.
  • the user grips the lever 35 along the raised portion 36, and rotates it in the direction of the arrow F of Figure 2. During its initial stages, said rotation causes increased compression of the spring 42. Then (see Figure 3) when the end 96 of the lever 35 engages the end 81 of the plate 37, the door 10 is dragged into rotation, and its projections 47 move along the channel 70, and the pin 46 reaches the longer side of the pawl 44.
  • the projections 47 of the door 10 become wedged in the channel 70 behind the radial projections 51 of the ring 50, the wedge-shaped projections 90,91 engage with each other, and the pin 46 (see Figure 4) causes rotation of the pawl 44, which imprisons said pin between its arms, and stops when the two projections 90 and 91 touch each other.
  • the door 10 thus becomes axially and radially locked in its closed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP84200890A 1983-06-22 1984-06-20 Device for closing the loading aperture of a washing machine Expired EP0131985B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21736/83A IT1163570B (it) 1983-06-22 1983-06-22 Dispositivo a portello per macchine lavabiancheria, particolarmente per uso domestico
IT2173683 1983-06-22

Publications (2)

Publication Number Publication Date
EP0131985A1 EP0131985A1 (en) 1985-01-23
EP0131985B1 true EP0131985B1 (en) 1987-11-04

Family

ID=11186143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200890A Expired EP0131985B1 (en) 1983-06-22 1984-06-20 Device for closing the loading aperture of a washing machine

Country Status (3)

Country Link
EP (1) EP0131985B1 (it)
DE (1) DE3467197D1 (it)
IT (1) IT1163570B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW342495B (en) 1996-07-22 1998-10-11 Matsushita Electric Ind Co Ltd Master information carrier, method of producing the same, and method for recording master information signal on magnetic recording medium
JP3361740B2 (ja) 1998-03-23 2003-01-07 松下電器産業株式会社 マスター情報磁気記録装置及び磁気記録媒体の製造方法
JP3344651B2 (ja) 1998-10-29 2002-11-11 松下電器産業株式会社 マスター情報担体を用いた磁気記録媒体の製造方法
EP1367169B1 (en) * 2002-05-29 2010-02-24 CANDY S.p.A. Improved door for washing machines and/or dryers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765207A (en) * 1928-03-13 1930-06-17 Coffee John Moses Latching means for the covers of laundry apparatus
US2105248A (en) * 1935-09-11 1938-01-11 American Laundry Mach Co Closure construction for washing machines
US2650490A (en) * 1948-03-11 1953-09-01 Easy Washing Machine Corp Door construction for tumbler type washing machines

Also Published As

Publication number Publication date
IT1163570B (it) 1987-04-08
DE3467197D1 (en) 1987-12-10
IT8321736A1 (it) 1984-12-22
EP0131985A1 (en) 1985-01-23
IT8321736A0 (it) 1983-06-22

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