WO2007124805A1

WO2007124805A1 - Draining filter access apparatus for a top-loading washing machine

Info

Publication number: WO2007124805A1
Application number: PCT/EP2007/001777
Authority: WO
Inventors: Stéphane Zownir
Original assignee: Electrolux Home Products Corp NV
Current assignee: Electrolux Home Products Corp NV
Priority date: 2006-04-27
Filing date: 2007-03-01
Publication date: 2007-11-08
Anticipated expiration: 2008-10-27
Also published as: RU2008146785A; RU2423564C2; ES2313491T3; EP1849910A1; EP2016219A1; DE602006003313D1; ATE412079T1; EP1849910B1; PL1849910T3

Abstract

This draining filter access apparatus (10) is enclosed in the drum lifter diametrically opposite to the loading door of it. It is principally constituted by a body (11) constituting the lifter base, having an opening (111) intended to line up with an opening of same shape and same dimensions preliminary realized in the body (11) of the drum (1) and a lid (12) articulated towards the body (11) constituting the lifter locking on the body (11) by simple ratchet mechanism.

Description

DRAINING FILTER ACCESS APPARATUS FOR A TOP-LOADING WASHING MACHINE

The invention concerns a draining filter access apparatus for a top-loading rotating drum washing machine.

It is known to have, on the washing machine water outlet circuit irrespective of its loading method, between the bottom of the tub and the drain pump, a filtering means to retain all undesirable. elements likely to damage or block the pump, which manage to pass through the holes located on the periphery of the drum, so as to allow the wash or rinse water to flow freely, or that would have been negligently introduced into the tub with the wash items when loading the drum and that would fall to the bottom of the tub by passing between the drum and the tub.

The most common of these filtering means consists of a cylindrical box laid out along the axis of the drain pump, which is attached to the base of the machine. This box with the filter, connected to the draining well by piping, is accessible through a quick-remove plug that allows the filter to be removed and cleaned, the said plug being hidden by a gate located, depending on the case, on the front or back of the machine frame.

On some machines, the drain pump is attached to the tub in the extension of a draining well where the protection filter is placed. However, contrary to the assembly mentioned above, in order to remove and clean the filter, this assembly requires access through the inside of the drum after placing it in the loading position, so an arm can be penetrated inside. A lifter for the washing drivetrain and the gate mass compensation is then diametrically opposite the drum access opening, virtually plumb with the basket where the filter is mounted. Therefore, it was deemed practical to arrange the access grid to the strainer under a lifter attachment surface, which is hollowed out and consequently open at its ends. But it is understood that to access the access grid to the strainer in order to dismantle and clean the filter, the lifter that hides it has to be removed first, which requires removing the screws that connect the said lifter to the drum and removing it from the drum, at the risk of forgetting to reinstall it or fastening it improperly, with the risks that this presents in case the machine is reused in these conditions, especially during the spin drying cycle. Moreover, this dismantling and reassembling operation constitutes a difficult operation for the housewife who uses the machine, who most often does not have suitable tools, hence there is a serious risk of defective reassembly.

The English patent GB 725 123 shows a laundry machine comprising a cylindrical clothes receiving drum having axially extending lifters with generally angular cross- section with the apexes directed inward, the headers being embossed to receive and locate the said lifters. The sides and apex of one or more of the lifters are cut away to provide an access opening through the lifter apex to the space between the lifter side walls, an opening being provided in the cylindrical wall located between the sides of the lifter and registering with the lifter opening and a removable cover being provided of generally angular cross section telescoped over the lifter, said cover having sides straddling the side walls of the lifter and the sides and apex of the cover conforming to the sides and apex of the lifter. This removal cover is secured and located on the lifter by screw.

We understand that, by this means, it is possible to access with the hand at the base of the tub to take off the matter accumulated in it and to do slide it toward the machine advent in order to effect the withdraw. It is not however a means to access to a draining well equipped of a filter to protect a draining pump, in order to pull out the filter for cleaning contrary the other apparatus of the anterior art evoked above.

The purpose of the present invention is to provide a solution for the disadvantage of the draining filter access apparatus affixed directly under bottom of the tub. This invention, as characterized in the claims, solves the problem consisting to create a draining filter access apparatus with which the filter access be executed without taking off nor tools and without risk of further incidents.

The advantages obtained through this invention consist principally in that the access apparatus incorporated with the opposed lifter to the drum access door takes one's seat directly above the draining filter basket that it leaves entirely and that it allows an easy manual access to the filter basket which can be like this removed and replaced easily. Moreover, this apparatus makes moreover directly incorporated to the washing machine at the time of its making.

Other characteristics and advantages will appear in the following description of a method of making the apparatus according to the invention, given as a non-limiting example with regard to the appended drawings where:

- figure 1 shows a front view of the closed apparatus,

- figure 2 shows a right side view of the closed apparatus,

- figure 3 shows a top view of the closed apparatus,

- figure 4 shows a front view of the apparatus in an open position,

- figure 5 shows a below view of the apparatus in an open position, - figure 6 shows a back view of the apparatus in an open position,

- figure 7 shows a partial view, in perspective, of a washing machine drum equipped with an apparatus according to the invention in open position.

The figures represent a draining filter access apparatus on a top-loading washing machine, integrated in one of the lifters equipping the washing machine drum 1, diametrically opposite to the drum 1 access door ; the said apparatus 10 including a body 11 equipped with an opening 111 normally closed by a lid 12 reproducing the exterior shape of a lifter interlocked to the body 11 by two studs aligned according to an axis XX'. The lid 12 being closed and normally stopped with a ratchet mechanism obtained via a flexible locking hook 14, interdependent with the body 11 , located at the end of the opening 111 opposite to the articulation of the lid 12, whose beak 141 ratchets on the lower edge of a small window 121 , forming a stop catch, made in the wall of a cavity 122 created in the free end of the lid 12 and open on the top to allow the said lid 12 to be released by removing the beak 141 of the flexible hook 14 under the action of a finger, accompanied by an action with the hand intended to bring the lid 12 to the opening stop corresponding more or less to its vertical position. The opening 111 of the body 11 is lined at its base by a collar 112 to be fitted into a passageway of a corresponding shape and dimensions made in the drum 1, against the wall of which the apparatus 10 is attached by four screws entering the openings 101 to 104 provided for this purpose in the base of the body 11, as it is the case for the other 5 lifters. Subject to a certain angular discrepancy of approximately 15° of the drum 1 towards its normal resting position, towards the back of the machine, the opening 111 of the access apparatus 10 lines up with the sump 20 of the draining circuit, where a basket 21 containing the filter one wants to clean is placed. Therefore, one just has to remove this basket 21 by passing it through the opening 111 of the access apparatus 10 10.

In examining now, in more detail, figures 1 to 7, one notices : on figures 1 , 3 and 7, the access cavity 122 to the beak 141 of the locking hook 14 engaged on the edge of the small window 121 , showing on figures 3 to 7, and on figure 2, the XX' position of the 15 articulation axis of the lid 12.

One will also notice, by comparing figures 4 and 6, that a certain incline of approximately 15°, towards the top and back, has been given to the inside front 123 of the lid 12 to facilitate passing a hand, as well as removing and reinstalling the filter 0 basket 21 , which therefore can be done without tools and without any other operation other than releasing and opening the lid 12 of the body 11, by simply pressing with one's finger on the beak 141 of the locking hook 14 of the lid 12 accompanied by a slight tension from the hand to obtain the complete release of the opening 111 of the body 11 from the apparatus 10 by hinging of the said lid 12, then, after cleaning and 5 filter basket 21 putting back to release the lid 12, to obtain itself closing by ratching.

The apparatus according to the invention is principally destined to equip the top loading washing machine but nothing to set itself in other laundering domains there the same problems exist under reserves of minors adaptations obvious for a man skilled 0 in the art.

Claims

1. Draining filter access apparatus for a top-loading rotating drum washing machine, enclosed in the drum lifter diametrically opposite to the loading door of it, characterized in that it is principally constituted by a body (11) constituting the lifter base, having an opening (111) intended to line up with an opening of same shape and same dimensions preliminary realized in the body (11) of the drum (1) and a lid (12) articulated towards the body (11) constituting the lifter locking on the body (11) by simple ratchet mechanism.

2. Access apparatus according to claim 1 , characterized in that the ratchet of the lid (12) on the body (11) of apparatus (10) is obtained by a flexible locking hook (14) interlocked to the body (11) situated in its opening (111) and a stop catch realized in the lid (12).

3. Access apparatus according to claim 2, characterized in that the stop catch realized in the lid (12) is constituted of the lower edge of a small window (121) realized in the wall of a cavity (122) created in the free end of the lid (12) and open on the top, offering a sufficient space to permit the insertion of a finger extremity to obtain the release of the flexible hook (14) beak (141) by simple pressure on it.

4. Access apparatus according to claim 1 , characterized in that the opening (111) of the body (11) is lined by a collar (112) with shape and exterior dimensions corresponding to these of the opening realized in the drum (1) wall.

5. Access apparatus according to claim 1 , characterized in that the inside front (123) of the lid (12) is raised of approximately 15° towards the back.