CN107407033A - Household appliance for washing laundry with specially constructed seals - Google Patents

Abstract

The invention relates to a household appliance (I) for caring for laundry, having a housing (4) and a lye container (6) arranged therein and having an annular sealing ring (1) which is arranged on the housing (4) and the lye container (6), wherein the sealing ring (1) has a sealing lip (19) which rests on a door (16) which extends in the closed state through an annular opening which is delimited by the sealing ring (1) and is arranged on a base body (23) of the sealing ring (1), wherein the sealing lip (19) has an anti-snagging structure (24) for the laundry in a length section of a lower encircling length half (25) of its annular shape in the encircling direction.

Description

Household appliance for washing laundry with specially constructed seals

technical field

The invention relates to a household appliance for cleaning laundry, which has a housing, a lye container arranged in the housing, and an annular sealing ring, which is arranged between the housing and the lye On a liquid container, wherein the sealing ring has a sealing lip which bears against a door extending through an annular hole delimited by the sealing ring in the closed state.

Background technique

Such a configuration is known, for example, from DE 10 2010 062 590 A1. There, washing should be prevented from becoming trapped between the lip seal and the outer surface of the door in that the lip seal has a first section directed radially inwards, the second section being connected to the first section. The second section extends substantially in the axial direction of the sealing ring and towards the second end of the second section.

In addition to being caught by the laundry, it can also happen that the entrained laundry is then twisted when the drum rotates and thus at least partially wraps around the sealing lip of the sealing ring. As a result, the sealing lip can be damaged and even partially torn during further rotation.

Contents of the invention

The object of the present invention is to provide a household appliance for cleaning laundry in which damage to the sealing lip by trapped laundry can be avoided.

This object is solved by a domestic appliance according to the features of claim 1 .

A household appliance for washing laundry according to the invention comprises a housing and a lye container arranged in the housing. Furthermore, the domestic appliance includes an annular sealing ring, which is arranged on the housing and the lye container. The sealing ring has a sealing lip. The sealing lip bears against the door which extends through the annular opening delimited by the sealing ring in the closed state.

The basic idea of the invention is that the sealing lip has an anti-snag structure for the laundry in the length portion of the lower half of the circumferential length in the circumferential direction of its annular shape. This means that the sealing lip is designed specifically in its configuration in such a way that the sealing lip is designed specifically in the circumferential direction of the annular shape of the sealing lip over its entire defined length, so that either The entrapment of twisted laundry is avoided or damage and in particular tearing is avoided at least when the length of the sealing lip is caught by the laundry. Since jamming can occur when the door is closed when the drum is filled with laundry, it is precisely in this particular length that the protective measures for avoiding the above-mentioned problems are mainly taken. This means that a sealing lip is formed that is not rotationally symmetrical in the circumferential direction. An important improvement with regard to the above-mentioned problems is achieved by the configuration described.

The sealing lip is arranged in particular in one piece on the base body of the sealing ring.

It is preferably provided that the anti-snag structure is formed on a length section which is between 10° and 140°, in particular between 60° and 140°, in particular It extends over an angular section between 90° and 140°, in particular between 110° and 130°. It is precisely this angled area that can be particularly advantageously configured with an anti-snag structure, since it is precisely in this angled area that the laundry can protrude when filling the washing drum and thus become jammed when the door is subsequently closed, due to this Clamping can then lead, in particular during subsequent rotations of the drum, to a corresponding twisting of the laundry and to possible snagging of the sealing lip, and the resulting damage to the sealing lip is avoided.

Preferably, the anti-snag structure is formed symmetrically with respect to a vertical axis of the sealing ring extending through the center of the annular sealing ring, in particular with an angular section of at most 60° on both sides of the vertical axis. structure.

It is preferably provided that the anti-scratch structure has a thickening of the sealing lip relative to the configuration of the sealing lip outside the anti-snag structure and is thus formed at least partially as a thickening, in particular entirely Constructed as a thickened section. This configuration achieves a substantial reinforcement of the sealing lip, which can then also withstand significantly greater forces, in particular tensile or torsional forces.

Particularly preferably, the thickening can only be formed at the end of the sealing lip. This means that the sealing lip has a non-constant thickness in its course from the end facing the main body of the sealing ring to the opposite end. In particular, the thickness of the sealing lip is smaller in the region of the end facing the main body of the sealing ring than in the region of the opposite end. In this embodiment, the sealing force produced by the sealing lip can be adapted particularly well, wherein at the same time damage to the sealing lip is avoided by the partial thickening.

In particular, the anti-snag structure is integrated into the sealing lip, so that it can be produced simply in terms of production technology. In particular, the integrated configuration also reduces the number of components and achieves an always identical positional arrangement of the anti-snag structure on the sealing ring.

It is preferably provided that the aforementioned thickenings forming the anti-snag structure are trapezoidal when viewed in the circumferential direction. This configuration also achieves an uninterrupted transition between the thickening caused by the anti-snag structure and the region of the sealing lip that is formed without the anti-snag structure, thereby also achieving the tightness of the entire sealing ring. And precisely also the tightness at the transition from the anti-snag structure to the other area of the sealing ring.

It is preferably provided that the thickening is hollow-free and thus also solid. The aforementioned advantages are particularly advantageous in this embodiment of the anti-snag structure.

In the configuration according to the first alternative, local thickening of the sealing lip in defined critical areas achieves a higher torsional strength and avoids entrapment by twisted laundry or at least in contrast to this avoids damage. rigidity.

It is preferably provided that the anti-snag structure is embodied as a protrusion, in particular completely as a protrusion, in a section perpendicular to the circumferential direction. A different choice among the configurations described also leads to an increased stability of the sealing lip and to withstanding the corresponding forces caused by the washing.

Preferably, the protrusion has a wave shape. The continuous, in particular corner-free, shape can again significantly reduce the catching of laundry on the projections and also increase the mechanical stability of the snag prevention structure.

It is preferably provided that the specifically shaped crest of the anti-snag structure is directed towards the door. As a result, the contact surface between laundry that may be trapped between the door and the anti-scratch structure is reduced, so that the possibility of the sealing lip becoming caught in the area of the anti-snag structure is also reduced and twisting is reduced.

It is preferably provided that the projection, which at least partially forms the anti-snag structure, is hollow. This means that, in particular, the mountain-shaped formation, which represents the undulating course of the bulge, can be said to be due to the inverted or fan-shaped shaped configuration of the sealing lip, the mountain-shaped formation is also in addition to the convex-shaped contour course. The top preferably has the same cross-sectional thickness over the entire length of the undulation. On the one hand, this configuration saves material and, on the other hand, achieves high stability.

It is preferably provided that the anti-snag structure has at least partially a sealing lip which can be pivoted in a defined manner, which is arranged in particular integrally on the main body of the sealing ring and can be pivoted relative to the main body. The base body has a receiving recess, into which the sealing lip is arranged to engage in a defined manner in the inverted state. The at least partially sunken arrangement of the relatively movable sealing lip can then also at least significantly reduce the gripping and catching of the sealing lip by twisted laundry in the closed state of the door. Due to the embedded or submerged arrangement of the inverted sealing lip, it is possible to prevent the sealing lip from being wrapped around by the twisted laundry.

Preferably, the sealing lip is arranged such that the sealing lip can be automatically at least partially swiveled into the receiving recess of the base body by closing the door.

In all embodiments, in addition to increasing the rigidity of the sealing lip to prevent it from being caught by washing, it is also combined with low opening and closing forces to maintain the tightness of the structure. It is also advantageous if the specifically designed sealing lip has sufficient spring allowance in order to compensate for device tolerances and to make an acceptably low contribution to the opening or closing force.

By locally shortening the sealing lip in defined critical regions, in addition to increasing the torsional strength, a smaller active surface for snagging by twisted laundry is achieved. The reduced tolerance allowance in the vertical direction can be compensated by better guiding of the door if necessary.

It is preferably provided that the anti-scratch structure and the region of the sealing lip which does not have the anti-snag structure is formed uninterruptedly and is therefore uninterrupted and continuous as viewed over a certain longer length in the circumferential direction. the transition section. As a result, the tightness of the entire sealing ring remains particularly high. A continuous transition means, for example, in the case of a thickened sealing lip, a continuously changing and thus smooth or kink-free thickness change in the transition region between the anti-scratch structure and the region of the sealing lip without the anti-snag structure.

Further features of the invention emerge from the claims, the figures and the description of the figures. Features and feature combinations mentioned above in the description as well as features and feature combinations described below in the description of the drawings and/or shown individually in the drawings can be used not only in the respectively specified combination but also in the They are used in another combination or alone without departing from the scope of the present invention. Therefore, the following embodiments are also considered to be included and disclosed by the present invention, which embodiments are not explicitly shown and described in the drawings, but are known from the described embodiments through individual feature combinations and can produce .

Description of drawings

Embodiments of the present invention will be described in detail below according to schematic diagrams. In the attached picture:

Figure 1 shows a longitudinal section view of a partial area of an embodiment of a household appliance for washing laundry according to the present invention;

Figure 2 shows a simplified axial view of an embodiment of the sealing ring of the household appliance according to Figure 1;

Figure 3 shows an enlarged view of an embodiment of a sealing lip;

Figure 4 shows a perspective cross-sectional view of an additional embodiment of the sealing lip; and

Figure 5 shows a simplified cross-sectional view of a further embodiment of the sealing lip in two different positions.

In the figures, identical or functionally identical elements are provided with the same reference symbols.

detailed description

FIG. 1 shows a domestic appliance 1 which is designed to care for laundry and which can be, for example, a washing machine or a clothes dryer. The domestic appliance 1 comprises a substantially hollow-cylindrical and annular sealing ring 1 which radially surrounds an insertion and removal opening 2 . The insertion and removal opening 2 is thus an annular hole through which the laundry can be accessed. In the direction of a horizontally oriented axis A, about which the drum in which the laundry can be placed can rotate, the sealing ring 1 is fastened with a first end 3 to the housing wall of the front part of the housing of the domestic appliance 1 4 and is fixed on the lye container 6 with the second end 5. For this purpose, the front housing wall 4 has a bead 7 which is surrounded by a first surrounding flange 8 . In the area adjoining the bead, the sealing ring 1 has a cylindrical course and finally merges into the bellows 9 . However, this is to be understood as merely exemplary, and the sealing ring 1 can also be designed differently for this.

The exemplary bellows 9 is such that the sealing ring 1 is designed so flexibly that it can compensate for the lye container 6 that occurs during the washing process or during the dehydration process in the case of a large amount of laundry relative to each other. Movement of the housing wall 4 at the front. Furthermore, a second flange 11 is provided on the second end 5 of the sealing ring 1 , by means of which the sealing ring 1 is fastened to the surrounding edges 10 and 12 of the lye container 6 .

Arranged inside the lye container 6 is a washing drum 13 that rotates during the washing or dehydration process, which during the dehydration process assumes the function of a dehydration drum and is arranged to be filled from the front through the annular opening. A sealing web 14 extending in the longitudinal direction and thus in the direction of the axis A of the arrangement starts from the second flange 11 and extends from there to the rolled-up edge 15 of the washing drum 13 .

The household appliance 1 shown in FIG. 1 also has a door 16 configured in the form of a round window, which (not shown in detail) is pivotably hinged on one side to the front housing wall 4 via a hinge, And it can be locked on its opposite side relative to the front housing wall 4 . The door 16 is preferably partially made of transparent glass. In this case, the door 16 has a frusto-conical outer shell 17 and a circular base 18 .

As can be seen in FIG. 1 , the sealing lip 19 is formed on the first end of the sealing ring 9 . The sealing lip 19 extends here substantially from the first flange 8 in the radial direction inwards and, when the door 16 is closed, bears sealingly against the outer periphery of the door 16 with a particularly planar annular contact 20 . Face 21.

The sealing lip 19 is arranged in one piece on a base body 23 of the sealing ring 1 and extends with a portion 22 into said base body.

FIG. 2 shows the sealing ring 1 schematically in the viewing direction along the axis A. As shown in FIG. It can be seen here that the annular configuration of the sealing ring 1 is configured such that, viewed in the vertical direction and thus in the y-direction of the domestic appliance 1, the lower circumferential length of the entire circumferential part of the sealing ring 1 An anti-snag structure 24 integrated into the sealing lip 19 is formed in the half 25 . Anti-snag structure 24 is formed at least over a length portion of half-circumference length 25 , which is thus formed over a lower 180° of the entire 360° of sealing ring 1 . In the exemplary embodiment, it is provided that the anti-snag structure 24 is formed on a length portion of the lower encircling length half 25 which is bounded over an angular section between 110° and 130°, in particular 120°. . In particular, the anti-snag structure 24 is formed symmetrically with respect to the vertical axis of the sealing ring 1 , wherein the vertical axis runs through the center of the annular shape of the sealing ring 1 . The anti-snag structure 24 is formed on each side of the vertical axis over an angular section of 60°. The sealing ring 1 is designed to be rotationally asymmetrical in the circumferential direction about the axis A. As shown in FIG.

An exemplary embodiment of the sealing lip 19 in the lower circumferential length half 25 is shown in a perspective section in FIG. 3 . It can be seen here that the sealing lip 19 is designed to be in mechanical contact with the outer peripheral surface 21 with a side surface 19 a having the contact portion 20 shown in FIG. 1 . On the side 19 b opposite to this side, in the embodiment shown, a local thickening 26 is formed, which is formed trapezoidally in the circumferential direction about the axis A. FIG. The thickening 26 is thus formed over an angular section of 120°.

FIG. 4 shows a further exemplary embodiment of the sealing lip 19 in the region of the anti-snag structure 24 in a further perspective section. Here, in contrast to the configuration according to FIG. 3 , it is provided that the anti-snag structure 24 is convex in a sectional view perpendicular to the circumferential direction about the axis A (the circumferential direction is thus perpendicular to the section) and according to FIG. 4 The illustration in shows a wave shape in cross-section. Due to this embodiment, local thickenings can also be formed, wherein the crests 27 rest against the outer peripheral surface 21 .

FIG. 5 shows a schematic sectional view of a sealing lip 19 , which is also arranged in one piece here on the base body 23 of the sealing ring 1 and can be pivoted in a defined manner relative to said base body, as indicated by the arrows. as shown. Adjacent to the sealing lip 19 , the base body 23 has a receiving recess 28 into which, according to the lower view in FIG. 5 , the sealing lip 19 can be swiveled in a defined manner and thus at least partially sunk or embedded in The receiving recess is arranged in the recess. Proceeding from the upper illustration in FIG. 5 , in which the door 16 is not yet closed, the sealing lip 19 is then automatically at least partially pivoted and accordingly pivoted into the receiving recess 28 when the door 16 is closed. The fully turned-in sealing lip 19 is shown in the lower part of FIG. 5 . If at this time when the door 16 is closed, laundry remains between the door 16 and the sealing lip 19 in the area of the anti-snag structure 24, and the laundry is thus easily caught, the sealing lip 19 can also continue to be turned into the receiving recess. into section 28. The laundry possibly caught between the door 16 and the sealing ring 1 can then also not get caught and thus not damage the sealing lip 19 when the washing drum 13 rotates and the laundry is then twisted, because at the sealing lip 19 When flipped in, the side face 19a of the sealing lip 19 forming the contact 20 can no longer be caught by the twisted laundry. Furthermore, the laundry can be drawn into the drum interior via the turned-in sealing lip 19 . After the laundry has been drawn into the drum interior, for example by drum rotation, the sealing lip 19 is at least partially turned out of the receiving recess 28 by its restoring force, and the side face 19 a can again form the contact 20 with the door 16 , In order to provide the sealing effect of the sealing lip 19.

The same applies correspondingly to the configurations according to FIGS. 3 and 4 . In particular, the anti-snag structure 24 can also be formed by a combination of a local thickening 26 of the sealing lip 19 and a receiving recess 28 formed in this region.

List of reference signs

I Household Appliances

1 sealing ring

2 Insert and remove opening

3 first end

4 housing wall

5 second end

6 lye container

7 hemming

8 First flange

9 Bellows

10 edges

11 Second flange

12 Second flange

13 washing drum

14 Seal

15 rolled edges

16 doors

17 shell

18 bottom

19 sealing lip

19a side

19b side

20 contact part

21 Outer surface

22 parts

23 substrate

24 Anti-trip structure

25 Lower wrap length half

26 thickened part

27 crests

28 Receiving recess

A axis

Claims (13)

1. a kind of home appliances (I) for being used to nurse washings, there is housing (4) and the alkali lye being arranged in the housing to hold for it Device (6) and the sealing ring (1) with annular, the sealing ring are arranged on the housing (4) and the alkali liquor container (6), Wherein, there is the sealing ring (1) sealing lip (19), the sealing lip to be passed through in abutting in one in off position by the sealing On the door (16) of the looping pit extension of circle (1) gauge and it is arranged on the matrix (23) of the sealing ring (1), its feature exists In the length thereof of the sealing lip (19) circular length half portion (25) in bottom on the circular direction of its annular shape In have for washings anti-structure of stumbling (24).

2. home appliances (I) according to claim 1, it is characterised in that anti-structure (24) construction of stumbling is following On length thereof, angle section of the length thereof between 10 ° and 140 °, particularly between 110 ° and 130 ° is constructed in institute In the circular length half portion (25) for stating bottom.

3. home appliances (I) according to claim 2, it is characterised in that described to prevent stumbling structure (24) on the sealing The vertical axis of the center extension of the sealing ring (1) through annular of circle (1) symmetrically constructs, particularly with the vertical axes The maximum 60 ° angle section construction of line both sides difference.

4. home appliances (I) according to any one of the preceding claims, it is characterised in that the anti-structure (24) of stumbling is The thickening part (26) of the sealing lip (19), the thickening part is with the sealing lip (19) in the anti-outside structure of structure (24) of stumbling Type is compared to thickening.

5. home appliances (I) according to claim 4, it is characterised in that in the ring of the annular shape of the sealing ring (1) Looked up around side, the thickening part (26) is respectively configured to the thickness being continuously reduced, particularly on opposed end It is configured to trapezoidal.

6. the home appliances (I) according to claim 4 or 5, it is characterised in that the thickening part (26) is at it from towards institute The end for stating the described matrix (23) of sealing ring (1) has different thickness into the trend of opposed end.

7. the home appliances (I) according to any one of claim 4 to 6, it is characterised in that the thickening part (24) is nothing Cavity.

8. home appliances (I) according to any one of claim 1 to 3, it is characterised in that the anti-structure (24) of stumbling exists Projection is configured in the section around direction of the annular shape of the sealing ring (1).

9. home appliances (I) according to claim 8, it is characterised in that the projection has waveform.

10. home appliances (I) according to claim 9 a, it is characterised in that crest (27) is towards the door (16).

11. the home appliances (I) according to any one of claim 8 to 10, it is characterised in that the projection is hollow 's.

12. home appliances (I) according to any one of claim 1 to 7, it is characterised in that the anti-structure (24) of stumbling It is the sealing lip (19) overturn with limiting, the sealing lip is arranged on the matrix (23) of the sealing ring (1) and can Overturn relative to described matrix, wherein, described matrix (23), which has, receives recess (28), and the sealing lip (19) is arranged as It is embedded into the state of upset in the reception recess.

13. home appliances (I) according to claim 12, it is characterised in that the sealing lip (19) is arranged so that institute Stating sealing lip can be automatically turned in the reception recess (28) at least in part by closing the door (16).