ES2327577T3 - WASHING CONTAINER WITH LASTRE WEIGHT FOR A WASHING MACHINE. - Google Patents

Abstract

The washing solution tub (1) for a drum-type washing machine has a ballast weight (11) which includes an elongated opening at least on the outer side ends and in the region of the apex (27). In the operating position of the washing solution tub, the openings (16a) on the outer side ends of the ballast weight are orientated horizontally, and the opening (16b) in the region of the apex is orientated vertically. A cavity between each spigot formed on the tub wall (6) and the respective opening enables positioning of the ballast weight on the tub wall.

Description

Wash container with ballast weight for one washing machine

The invention relates to a container of washing for a drum washing machine, with at least a weight of  ballast fixed by bolted joint, made as a segment annul and press on support areas on the wall of the container, being shaped for the union screwed into the vessel wall at least three elongated blocks, which penetrate respective corresponding oblong openings in the weight of ballast, the studs being oriented in the longitudinal direction of the corresponding opening.

One such washing vessel is known by the DE 102 15 254 A1. In this wash bowl are fastened on the front wall fasteners and bumps or dowels. Fixing elements and bumps penetrate the corresponding recesses or openings in the ballast weight, leaning the ballast weight on the front wall and narrowly covering the recesses the lateral edge of the fastening elements that stand out. From the outer side the weight, by means of the corresponding openings, with the help of means of union with the washing container. In this type of fixation it is not However, it is necessary that the contour of the openings in the weight be perform with great precision and with a high observation of the measures, so that the trailed connection is achieved between opening and bulge and the weight does not board or vibrate with respect to the vessel wall during operation.

From document DE 42 38 686 C1 a known washing container in which the front walls are configured bumps or studs, which penetrate openings in ballast weight. The bumps are equipped with respective axial holes, in which a screw is screwed, which with its screw head presses the ballast weight against the support area As a support area they are formed around the nerve bumps around. The opening in the ballast weight It is covered with a spring saucer, which after screwing the screw provides a prestressing force on the weight of ballast. In a plastic washing container it cannot be avoided in the support area a relaxation, so that the prestressing force yield progressively. When it comes to heavy or large weights imbalances, the ballast weight can be loosened and at worst The cases let go.

From EP 0 798 412 A2 the fixing a ballast weight to a washing vessel by expansion plugs In this regard, the ballast weight has a conical passage opening, which beads over a spike in the wash container wall. In the hollow block is inserted in turn a cone-shaped or wedge-shaped piece that presses the walls of the block out against the inside perimeter of the opening of ballast weight step. By expanding the walls, which they are then adapted to the conical passage opening, the weight is fixed of ballast to the vessel wall.

The invention thus has the basic task of putting available a plastic washing container with a fixing Simple and improved for at least one ballast weight.

Within the framework of the invention the task is solved with the features of claim 1. Advantageous improved configurations and refinements of the invention result from the following subordinate claims.

For this, it is proposed according to the invention that between each block and the corresponding opening is, at least for zones, a hollow space, with which it is possible to position the weight of ballast on the vessel wall. This way you can scroll laterally within a limited range the ballast weight before the fixing with respect to the wall of the container, with what of simple way manufacturing tolerances are compensated. This way tolerances quite large for weight can be admitted of ballast and openings. This is especially advantageous when these are concrete ballast weights or a metal foundry, since then the exact observation of the measures of the openings in terms of position would not be realizable or only with a high cost

The ballast weight is performed here as annular segment, in which at least at the outer ends respective openings are planned and in the area of the top is provided an opening for fixing to the wall of the container. To compensate for tolerances, horizontally oriented oblong openings at the outer lateral ends and the opening in the top area, vertically. The indications of address refer to the service position of the recipient of Washing in the washing machine. In this way each taco reaches the planned opening, still slight displacements of the ballast weight before final fixing of the screws. To the respect the longitudinal sides of the studs on the corresponding interior wall of the opening, which is achieved a distribution of forces and surface pressure is reduced. By combining horizontal orientations and verticals of oblong studs and openings, is provided a good fixed seat with compensation of tolerances at the same time. This configuration is especially advantageous when the weight of Ballast is fixed to the front face of the wash container.

In an advantageous execution, it is housed in the hollow space between the block and the opening an elastic element, ring-shaped or going around, which fills at least by areas the hollow space In this way, lasting and secure support is achieved. of the ballast weight, thereby avoiding possible movements relative between the weight of ballast and the wall of the container washed.

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In an advantageous improvement, fill the elastic element the hollow space along the long sides of the oblong opening in the ballast weight. Since in the area of the short sides of the opening there are still spaces gaps, some of the element's material can expand there elastic. For fixing it is no longer necessary the great force of prestressing that is provided by screwing firmly, so that the vessel wall does not look heavily charged in the area of support for. This increases the duration and avoids possible cracks due to stresses or loads that are too high.

In a convenient execution, the bushing by an elastomeric or rubber material, which has a hardness in the range of 40 to 80 ShoreA. With this hardness it is achieved by a side a limited deformability, which provides sufficient friction resistance in the support area. On the other hand, the material is hard enough for stable fixing, to that in particular during the operation of the washing machine relative movements between the weight of ballast and vessel wall.

In another advantageous constructive form, it is formed on a front wall of the washing vessel at least a fixing tab, in which the fixing block extends moving away from the plane of the front wall. Here the fixing regardless of the wall conditions of the container. In particular, the locking tab can be made with a greater thickness of the material, to be able to better resist the loads

To provide better driving elastic bushing in the fixing area, is arranged in a convenient execution around the opening, of which at less there is one, in the ballast weight, a recess around, in which a neck of the elastic element that goes around is supported, being arranged between the screw and neck a washer, which presses the neck over the recess.

In an advantageous improvement, it has the washer to accommodate the screw in the central area an opening oblong, which extends in the longitudinal direction towards the opening in ballast weight. This way you can screw the screw in a fixed predetermined position on the wall of the container, the position in the washer not being fixed, with that tolerance compensation is possible or a change of position of the ballast weight in the direction longitudinal of this opening.

An exemplary embodiment of the invention is describe more in detail based on the following figures, showing about it:

Figure 1: a scheme of a machine drum washer;

Figure 2: the wash container in a front perspective view;

Figure 3: a detail of the fixation of the ballast weight;

Figure 4: a detail of the fixation of the ballast weight in an exploded view;

Figures 5a, 5b: a detail of the fixation of the ballast weight in a sectional representation and

Figures 6, 7: other forms of execution in a detailed representation in section.

In figure 1 a schematic drawing is drawn washing machine 8 with a washing container 1 in one view lateral sectioned. The washing container 1 is composed of less by a cylindrical shell 2 surrounding the drum 3. The cylindrical shell 2 is closed by at least one bottom wall 6th posterior. A cube 4 is integrated in the bottom wall 6a, which houses the drive shaft 5 for the drum 3 driven by a motor 12. The front front wall 6 is provided with an opening of load 7, which can be closed by a door 9. To the envelope 2 and / or to the front wall 6, ballast weights 10 are fixed, eleven.

Figure 2 shows the container of 1 wash in a perspective view from the front. The weights of ballast 11 are arranged on the outer side on the front wall previous 6, being configured as arc as circular segment ring and following on the outer side approximately the evolution of envelope 2 and leaving free by the inner side the loading opening 7. Weights 11 are fixedly screwed to the front wall 6, the fixing to fixing tabs 14, formed in the wall front 6 and / or wrapper 2. For screws are provided oblong openings 16, 16a, 16b, being oriented, referring to the washing machine position in service, openings essentially horizontal exteriors 16, 16a and the opening 16b of the top area, vertical. This configuration allows a Tolerance compensation very good.

Figure 3 outlines the setting of the weight of 11 ballast in detail. On the front wall 6 or on the tongue 14 is formed a spike 15 (not shown), which rises from the plane of the tongue 14. The ballast weight 11 has a opening 16, into which the block 15 enters from the side of the wall. With the help of screw 13 and a washer placed under 21, press the ballast weight 11 against the wall of the container 6 or the tongue 14. The opening 16 and the washer 21 placed on top they are configured oblong, providing the oblong opening 26 in washer 21 a compensation of tolerances for fixing of the screw.

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Figure 4 schematically depicts the fixing area in an exploded view. On the wall front 6 or in the plane of the tongue 14 is formed a block 15. This block 15 is shaped oblong or oval and extends essentially in the direction in which the corresponding one runs opening 16 in the weight of ballast 11. On the block 15 beads an elastic element 19 with an annular shape, not resting flush the short sides of the oblong block 15. Alternatively you can the elastic element 19 is previously housed in the opening 16 in the ballast weight 11, holding on to the neck 23 that goes around (figure 4a) in ballast weight. Then you insert ballast weight 11 equipped with elastic elements on the block 15. The ballast weight 11 is arranged on the wall front 6 such that the block 15 with the elastic element 19 penetrates into the oblong opening 16. In this regard the long sides of the inner wall 28 of the opening 16 flush and / or under pressure on the elastic element 19, the short sides forming an interstitium or they only rest loosely on the elastic element 19 or form a gap 18 (figure 5a) between the elastic element 19 and the block 15. In this way a positioning or fixation is achieved in the direction C, a displacement in the direction being possible longitudinal L of the opening 16. On the side of the ballast weight 11 opposite the front wall 6, it is inserted, inserting the washer 21, the screw 13 through the opening 16 of the ballast weight 11 in the opening 31 and screw in the nut (not shown).

In figure 5a it is schematically represented the ballast weight 11 set in a sectional representation detailed along the B-B cutting line (figure 3). Tightening screw 13, which is screwed into a nut 20 on the opposite side of the tongue 14, the weight of ballast 11 against the support area 17 on the wall of the container 6 or well on the tongue 14. From the plane of the tongue 14 the block 15, which is inserted into the opening 16 of the ballast weight 11. The elastic bushing 19 rests on the hollow space 18 in the interior wall 28 of the opening 16, filling the hollow space 18 between the block 15 and the inner wall 28 of the opening 16 only partially through the bushing 19. On the front side of the cap 19 is formed a neck 23 that goes around, which it is oriented radially outwards and that rests on a recess 24 that goes around the ballast weight 11. When tightening the screw 13, the flat area 22 of ring 19 is slightly crushed and press the neck 23 that goes around over the ballast weight 11 or good about the rebate 24. Through the possibility of recovery from neck 23, the ballast weight 11 is pressed with a force limited against the support area 17 on the wall of the container 6 or tongue 14, which achieves a reliable fixed seat and Durable ballast weight 11.

Figure 5b shows the ballast weight 11 in a schematic representation in section along the line of A-A cut (figure 3). Then the hollow space 18 between the pin 15 and the inner wall 28 of the opening 16 is almost completely full, leaning or compressing inside from the hollow space 18 the flat area 22 of the ring 19 both on the block 15 as well as inside wall 28 of opening 16.

Figure 6 shows an execution of the bushing 19, in which on the front face facing the wall of the container 6 is formed another neck 25 that goes around, oriented outward, which is between the ballast weight 11 and the wall of the container 6 and that provides support 17 for the weight of ballast 11. This neck 25 causes, when interspersed, a high frictional resistance between ballast weight 11 and the container wall 6, thereby avoiding lateral movements relative weight of ballast 11. Due to the high resistance of neck friction 25, further improves the fixed seat, not having to be pressed so firmly against the surface of front wall support 6 or tongue 14. This way you very widely avoids the relaxation behavior in the plastic in the area of the fixing or of the support 17. With this provides reliable fixation for all situations of operation that occur throughout the life of the washing machine 8 (figure 1).

Figure 7 shows another execution, in which the nut 20 includes angled segments 30 towards tongue 14, the which are partially introduced through openings 29 in the tongue 14. The free end of these segments 30 forms the 17 support for ballast weight 11. With this type of fixing you can Tighten screw 13 very firmly, since the weight of ballast 11 with its support area 17 it is no longer pressed on the plastic of the container wall 6 or tongue 14 and therefore cannot Press into the plastic.

Claims (7)

1. Washing container (1) for one machine drum washer (8), with at least one ballast weight (11) fixed by screw connection (13), made as an annular segment and which is pressed on support surfaces (17) in the wall of the container (6), being shaped for the screw connection (13) on the wall of the container (6) at least three oblong blocks (15), that penetrate respective oblong openings (16)  in the ballast weight (10, 11), the studs (15) being oriented in the longitudinal direction of the corresponding opening (16, 16a, 16b), characterized in that the weight of ballast (11), at least at the outer, lateral ends and in the area of the top (27) includes respective oblong openings (16, 16a, 16b) for fixing on the wall of the container (2, 6) and because in the operating position of the washing container (1) the openings (16, 16a) at the outer lateral ends of the ballast weight (11) are oriented horizontally and the opening (16b) in the top area (27) is oriented vertically and because in each case between the block (15) and the opening (16) there is a hollow space (18), at least by areas, so that it is possible to position the ballast weight (11) on the wall of the container (6). 2. Washing container (1) according to one of the claims 1, characterized in that in the hollow space (18) between the block (15) and the opening (16) an elastic element (19) is housed, with an annular shape, which fills, at least by areas, the hollow space (18). 3. Washing container (1) according to claim 2, characterized in that the elastic element (19) fills the hollow space (18) along the long sides of the oblong opening (16) in the ballast weight (11). 4. Washing container (1) according to claim 2 or 3, characterized in that the elastic element (19) is composed of an elastomeric or rubber material, which has a hardness in the range of 40 to 80 ShoreA. 5. Washing container (1) according to claim 1, characterized in that at least one block (15) is formed in a fixing tab (14) in the washing container (1), and extends away from the plane of the wall of the container (6), the wall of the container being a front wall of the washing container (1). 6. Washing container (1) according to claim 1, characterized in that the opening (16) in the ballast weight (11), of which there is at least one, has a step (24) around, on which a neck (23) of the elastic element (19) rests, which a washer (21) that presses the neck (23) onto the step (24) is arranged between the screw (13) and the neck (23). 7. Washing container (1) according to claim 1, characterized in that the washer (21) to accommodate the screw (13) has an oblong opening in the central area (26), which extends in the longitudinal direction of the opening (16) in the ballast weight (11).