EP2106235B1 - Support mechanism for a dish rack - Google Patents

Description

The invention relates to a dish rack for a dishwasher having a plurality of wheels, which are engageable with basket guide rails of a dishwasher, such that a first, running on an upper side of a basket guide rail impeller is a supporting role that a second, on the bottom the basket guide rail running impeller is a guide roller which limits an occurring when pulling the crockery basket in the direction of gravity rotational movement of the crockery basket, and that at least one securing element is provided which limits an occurring when the crockery basket against the direction of gravity rotational movement of the crockery basket, wherein the support roller , the guide roller and the at least one securing element are combined to form a carrier mechanism comprising two holding plates which can be fastened on opposite sides of the dish rack.

Such a dish rack for a dishwasher is for example from the publications EP 1 508 293 A1 and WO 02/087408 A1 known. The respective crockery basket has on two opposite sides a plurality of impellers which are constantly in engagement with two arranged in a dishwasher dishwasher washing basket guide rails and allow Bebeziehungsweise unloading the crockery basket to extend or insert the crockery basket. For this purpose, the dish rack on each said side each have a common holding plate on which the plurality of wheels is provided for this purpose.

Furthermore, a dish rack for a dishwasher from the document DE 101 20 577 A1 known. This crockery basket has a basket support plate, which is arranged on a side wall of the crockery basket formed from horizontally and vertically extending basket struts and which is provided with three rollers located on the side facing the washing compartment. These casters move on pulling out of the crockery basket on a basket guide rail, which is located near a Spülbehälterwand. In this case, two wheels of an upper running surface of the basket guide rail and an impeller of a lower running surface of the basket guide rail assigned. The structural design and the attachment of the dish basket affect the time required for the production and thus the costs.

Furthermore, from the publications US 3,982,802 and US 3,744,646 each a dish rack for a dishwasher known, which is arranged on basket guide rails extendable inside a dishwasher. In this case, a running on the top of the basket guide rail carrying roller is provided on each side of the respective dish rack. In order to limit a tilting movement in the direction of gravity, which occurs when the crockery basket is pulled out, a guide roller running on the underside of the basket guide rail is provided as well as separate securing elements which also limit a tilting movement against the direction of gravity.

It is therefore an object of the invention to provide an improved dish rack, which has a simple structure and can be mounted faster.

This object according to the invention is achieved in that at least one locking element designed as a projection is arranged on the retaining plate, which is designed such that the projection can be brought into engagement with the upper running surface of the cage guide rail, and that the at least one securing element is at a predetermined distance the upper tread of the basket guide rail is arranged when the crockery basket is hung with the holding plate in the basket guide rail.

The first feature causes, in a support mechanism according to the invention on the holding plate at the location of a predetermined guide position instead of an impeller arranged with the running surface of the basket guide rail engageable projection. Such a projection, for example, having the shape of a slider, can completely take over the function of an impeller or a roller, wherein such a support mechanism manages in comparison to conventional support mechanisms with fewer components. As a result, in particular when assembling the support mechanism, time can be saved, resulting in a more cost-effective production results.

Furthermore, the second feature causes the projection to be arranged at a predetermined distance from the upper running surface of the basket guide rail when the crockery basket is hung with the holding plate in the basket guide rail. This ensures that no unnecessary frictional forces are generated by the projection or slider during actuation of the crockery basket, that is to say when the crockery basket is pulled in or out of or into the washing compartment of the dishwasher.

Generally, the crockery basket according to the invention allows the waiver of at least one impeller on one side of the dish rack and thus a simplification of production. In this case, the wheels are arranged on the dish rack in such a way that, due to the weight distribution of the dish rack, essentially only one centrally arranged pair of wheels is in contact with the basket guide rails when the dish rack is pulled out or pushed in. The respectively arranged on both sides securing elements, however, are essentially only in contact with the basket guide rails when the crockery basket is in a fully inserted or pulled out position or tilted in a pull or push in such a way that the securing elements or wheels contact the basket guide rail in contact ,

Preferably, it is provided that at least two wheels and at least one securing element are provided on two opposite sides of the dish rack. The securing elements form a pair of securing elements and two wheels a first pair of wheels, which runs on top of a basket guide rail, while two other wheels form a second pair of wheels that is located below the bottom of a basket guide rail.

In a preferred embodiment, it is therefore provided that the two wheels and the at least one securing element are arranged forming a triangle on each side of the dish rack, wherein it may be the triangle to a right-angled triangle.

Furthermore, it is preferably provided that the wheels and the at least one securing element are attached directly to the dish rack. The can Impellers and securing elements to be arranged adjustable in height on the dish rack.

In a preferred embodiment, it is further provided that the wheels and the at least one securing element are releasably secured directly to the dish rack. For this purpose, suitable clip elements can be used.

A structurally simple support mechanism for a dish rack for receiving items to be washed for a dishwasher has two attachable to opposite sides of the dish rack holding plates, which can be fixedly mounted fixed. In this case, the holding plates can be designed such that they can be attached and detached without tools on a dish rack. Each of the holding plates has, as a further feature, that a plurality of impellers are respectively arranged on the holding plate at-in each case predetermined-guide positions. In this case, the running wheels can be brought into contact with running surfaces of a rail, wherein the rail is preferably arranged close to a housing of the dishwasher in order to enable a holder and an extract of the crockery basket from the dishwasher.

On the holding plate, a first, a second, a third and a fourth guide position are provided. The first and second guide positions are associated with an upper tread of the rail and the third and fourth guide positions are associated with a lower tread of the rail. The first and the third guide position in the extension direction of the dish rack in front and the second and the fourth guide position in the extension direction of the dish rack assigned to the rear. In this case, the projection on the second guide position of the holding plate and a respective roller at the first and the third guide position are provided. An inventive support mechanism is thus characterized by the fact that only two wheels are required, while the function of a third impeller is taken over by the projection formed as a slider. This makes it possible to insert a crockery basket, which is provided with a support mechanism according to the invention, in the usual way from a washing compartment of the dishwasher and pull out. The projection ensures that acting on the crockery basket, especially in improper use, forces the rollers of the support mechanism of the Can replace the rail. Thus, the secure connection of the dish rack on the support mechanism is ensured with the basket guide rail.

The projection and the retaining plate may be integrally formed of the same material. It is also conceivable to form the projection as a separate component and to connect positively to the retaining plate. The integral and integral design of the projection and retaining plate, however, has the advantage that a particularly simple production is possible and the assembly of separate components is eliminated.

In contrast, it is provided that the projection rests on the upper running surface of the basket guide rail when the crockery basket is hung with the holding plate in the basket guide rail and a force against the direction of gravity acts on a front portion in the extension direction on the crockery basket. The projection thus assumes, as already explained, the function of the securing element, so that the crockery basket can not be inadvertently detached from the basket guide rail.

It is expedient if the projection on an end facing away from the carrier plate has a curvature approximating that of the rail in order to effect the greatest possible overlap with the basket guide rail. In particular, the projection has a complementary shape to the cross-sectional shape of the basket guide rail. This gives a maximum backup function.

In a further embodiment, fastening means for stationary, releasable attachment to the dish rack are formed on the holding plate. About the fastening means, the holding plate can be attached to horizontally and / or vertically extending basket struts, which form the side wall of the dish rack. In particular, it is provided that the fastening means are designed as latching connection to a latching on at least one, in particular horizontally extending, wire strut of the dish rack. Conveniently, the fastening means are integrally formed integrally with the retaining plate.

It can be provided that the axes of the wheels, which are also referred to as a rivet by experts, are formed integrally and integrally with the retaining plate.

If the holding plate, as is provided according to a further embodiment, formed from a sprayable plastic, so the support mechanism in addition to the holding plate only the number of wheels, preferably two, on. Thus, a minimum number of parts for the provision of the support mechanism is necessary, whereby the production and manufacture greatly simplified.

In order to avoid detachment of the wheels from the axles, the axles on a side facing away from the retaining plate on a circumferential bead to secure the wheels. In order to enable the wheels to be mounted on the axles, the axles have an axially extending recess extending over the diameter of the axles, such as a groove.

Fig. 1

eine perspektivische Darstellung eines bekannten Geschirrkorbs für eine Geschirrspülmaschine;

Fig. 2

eine perspektivische Darstellung eines ersten Ausführungsbeispiels eines Trägermechanismus eines erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine;

Fig. 3

eine perspektivische Darstellung eines zweiten Ausführungsbeispiels eines Trägermechanismus eines erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine, der an einem Rahmen zur Aufnahme eines Spülguteinsatzes befestigt ist;

Fig. 4

eine Seitenansicht des an dem Rahmen befestigten Trägermechanismus des erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine;

Fig. 5

eine perspektivische Ansicht von hinten des an dem Rahmen befestigten Trägermechanismus des erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine;

Fig. 6

eine Seitenansicht des an dem Rahmen befestigten Trägermechanismus des erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine;

Fig. 7

eine Seitenansicht des Trägermechanismus des erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine ohne Laufräder; und

Fig. 8

eine perspektivische Darstellung des in einer Schiene eingehängten Trägermechanismus des erfindungsgemäßen Geschirrkorbs für eine Geschirrspülmaschine, der an dem Rahmen zur Aufnahme eines Spülguteinsatzes befestigt ist.

The invention will be described in more detail with reference to FIGS. Show it:

Fig. 1

a perspective view of a known dish rack for a dishwasher;

Fig. 2

a perspective view of a first embodiment of a support mechanism of a dishwasher basket according to the invention for a dishwasher;

Fig. 3

a perspective view of a second embodiment of a support mechanism of a dishwasher basket according to the invention for a dishwasher, which is attached to a frame for receiving a Spülguteinsatzes;

Fig. 4

a side view of the attached to the frame support mechanism of the dishwasher basket according to the invention for a dishwasher;

Fig. 5

a perspective view from the rear of the frame mounted on the support mechanism of the dishwasher basket according to the invention for a dishwasher;

Fig. 6

a side view of the attached to the frame support mechanism of the dishwasher basket according to the invention for a dishwasher;

Fig. 7

a side view of the support mechanism of the dishwasher basket according to the invention for a dishwasher without wheels; and

Fig. 8

a perspective view of the hinged in a rail support mechanism of the dishwasher basket according to the invention for a dishwasher, which is attached to the frame for receiving a Spülguteinsatzes.

It will be on the Fig. 1 and 2 Referenced.

Is shown in Fig. 1 a dish rack 1 for a dishwasher (not shown), which has in its interior a receiving space 2 for dishes to be cleaned. On two opposite side surfaces at pairs corresponding to a first pair of wheels, formed from the wheels 15, arranged, which serve as support wheels and in an assembled state with respective an upper side of a basket guide rail (not shown) are engaged. A second pair of wheels, formed from the wheels 16, is arranged below the first wheels 15 such that the wheels 16 are in contact with a respective underside of a basket guide rail and serve as guide wheels. At about the same height as the first wheels 15 are arranged on securing elements 17, which (like the first wheels 15) with an upper side of a basket guide rail (not shown) cooperate and prevent unwanted separation of a basket guide rail (not shown).

Both the first wheels 15, and the combined to a support mechanism 46 second wheels 16 and the securing elements 17 are releasably secured to the dish rack 1 with clip elements.

Fig. 2 shows a support mechanism 46 with a holding plate 10, which is formed in the present embodiment of a substantially triangular base body, which is made for example of a suitable plastic. At the respective corners of the holding plate, a first impeller 15, a second impeller 16 and a securing element 17 are arranged. In this case, the holding plate 10 can be attached to a dish rack 1, for example detachably by means of clip elements 3, 4.

It will be on the Fig. 3 to 8 Referenced.

The Fig. 3 to 7 show in various representations a support mechanism 46 for a dish rack for receiving items to be washed for a dishwasher, in particular for a domestic dishwasher. Shown is in each case a holding plate 10 of the support mechanism 46, which is arranged on a wire frame 40. The support mechanism 46 according to the invention in this case comprises two retaining plates 10 fastened on opposite sides of the wire frame 40, each of which is mirror-inverted, but otherwise identical. For this reason, the following description is limited to the illustration and explanation of only one retaining plate.

The invention will be explained with reference to an embodiment of an extendable from the dishwasher crockery basket for lying receiving cutlery, wherein the cutlery basket, not shown in the figures described below is inserted into the wire frame 40. However, the carrier mechanism 46 according to the invention can also be used in conventional upper dish racks. The wire frame 40 comprises for holding the cutlery basket a circumferential wire strut 41, the opposite portions are connected by holding struts 42 and 43. Furthermore, the wire frame 40 comprises a support strut 44, which serves in connection with the portion of the encircling wire strut 41, to which it is attached, for fastening the holding plate 10 (see Fig. 3 ).

For attachment of the holding plate 10 has these integrally and integrally formed with the retaining plate latching hooks 18, 19, 20, 21, 22 (see FIGS. 5 to 7 ). The latching hooks 20 to 22 in conjunction with a wall portion of the holding plate 10 a receiving opening for producing a positive connection with a parallel to the wire strut 41 extending portion of the support strut 44 (see Fig. 3 and 6 ). The latching hooks 18, 19 are, as in particular from Fig. 7 Particularly clearly shows, designed such that the ends are facing each other, so that a positive and non-positive connection with the circumferential wire strut 41 can be produced. It allows a tool-less manufacturable attachment to a wire strut 41st

The different configuration of the locking strut 44 connected to the locking hooks 20 to 22 and connected to the rotating wire strut 41 latching hooks 18 and 19 allows a particularly simple attachment and attachment of the holding plate 10 at the wire frame 40. Like out Fig. 6 As can be seen clearly, the lower latching hooks 20 to 22 can first be brought into engagement with the support strut 44. By a pivoting movement of the holding plate 10 in the direction of the circumferential wire strut 41, the latching hooks 18 and 19 can be connected to this detent. The latching hooks 20 to 22 are thus only positively connected to the support strut 44, while the latching hooks 18 and 19 have a frictional connection to the wire strut 41. In order to avoid a displacement in the vertical direction of the holding plate 10 on the wire frame 40, a contact surface 23 (see FIG Fig. 5 ), which bears against a vertically extending portion 45 of the support strut 44.

The holding plate 10 has a first guide position 11, a second guide position 12, a third guide position 13 and a fourth guide position 14 (see FIG Fig. 3 and 4 ). The first and second guide positions 11, 12 are an upper tread one in the FIGS. 3 to 7 Not shown basket guide rail, a so-called basket guide rail assigned. The third and fourth guide positions 13, 14 are associated with a lower running surface of the basket guide rail. While in conventional support mechanisms of the prior art at least three guide positions, more precisely the first, second and fourth guide position 11, 12, 14, wheels are arranged, the support mechanism 46 according to the invention only at the first guide position 11 and the fourth guide position 14 wheels 15th , 16 on. At the second guide position 12, however, a projection 17, which is also referred to as a slider, is arranged.

Each of the wheels 15, 16 is disposed on an axle 24 and 27, respectively. The axes 24, 27 are integrally and integrally formed with the holding plate 10, which is particularly good Fig. 7 evident. The holding plate 10, the latching hooks 18 to 22 and the axes 24 and 27 can be made for example of a sprayable plastic. In order to facilitate the application of the wheels 15, 16 on the axes 24, 27, the axes 24, 27 each have a groove 26, 29, which allow a deformation, in particular a compression, the axes 24, 27, so that the wheels can be pushed over the molded beads 25, 28 at the ends. The beads 25, 28 are used after attaching the wheels 15, 16 on the axes 24, 27 to prevent accidental detachment of the wheels of the axes 24, 27. in the As a result, the carrier mechanism 46 according to the invention consists of the holding plate 10 and the two wheels 15, 16.

The holding plate 10 is arranged on the wire frame 40 in the insertion direction behind. Accordingly, the impeller 15 disposed at the guide position 11 is the upper front impeller of the support mechanism 46. The impeller 16 disposed at the fourth guide position 14 is the rear lower impeller. The formed as a projection securing element 17 is assigned to the second guide position 12 of the upper tread of the basket guide rail 32. The projection 17 is arranged on the holding plate such that it has a predetermined distance from the upper running surface of the basket guide rail 32 when the dish rack with the holding plate 10 is suspended in the basket guide rail 32. The spacing of the projection 17 from the basket guide rail 32 is in Fig. 8 to recognize, in which the support mechanism 46 of the invention attached to the basket guide rail 32, is shown. The Fig. 8 shows the situation in which the wire frame is inserted for holding the cutlery basket in a washing container, not shown, of the dishwasher. The spacing of the projection 17 from the basket guide rail 32 ensures that the projection does not rest on the upper running surface during a relative movement to the basket guide rail 32 and causes friction. On the other hand, however, the projection 17, with a force acting upward on the crockery basket in the direction of gravity, prevents the holding plate 10 with the crockery basket from reaching an undesired position in which detachment of the support mechanism 46 from the rail is possible. The projection 17 thus assumes the function of a securing element.

The holding plate 10 has, as it is made Fig. 4 well, struts 30 in the manner of a framework, so that between these open areas 31 are formed. In contrast to a full-surface design of the holding plate 10, such a configuration is less susceptible to dirt. In addition, less material is needed for the production.

The invention provides a support mechanism 46 for the crockery basket of a dishwasher, in particular for a cutlery drawer, which provides a holding plate with molded-on axes for wheels and clip connections to the Attachment to basket struts of a wire frame includes. The wheels can be clipped onto the axles. In contrast to conventional carrier mechanisms 46, the carrier mechanism 46 according to the invention requires only two rollers. A rear, upper roller is replaced by a cheaper slider, which is also preferably integrally molded on the support plate. Due to the weight distribution of the slider is only briefly, in case of improper use of the dish rack needed. This does not interfere with normal operation with the running characteristics of the support mechanism 46 relative to a rail. Due to the small number of components of the support mechanism 46 according to the invention a simpler installation is possible. Fewer manufacturing and assembly tools are needed. Due to the small number of parts, a higher accuracy is achieved because there are no tolerance chains or dependencies.

LIST OF REFERENCE NUMBERS

1 dish rack 2 accommodation space 3 clip member 4 clip member 10 Retaining plate 11 First leadership position 12 Second leadership position 13 Third leadership position 14 Fourth leadership position 15 Wheel 16 Wheel 17 fuse element 18 latch hook 19 latch hook 20 latch hook 21 latch hook 22 latch hook 23 Contact surface against a lateral displacement 24 axis 25 bead 26 groove 27 axis 28 bead 29 groove 30 brace 31 Open area 32 rail 40 wire frame 41 Circulating wire strut 42 holding strut 43 holding strut 44 support strut 45 Vertical section of the strut 46 support mechanism

Claims (18)

1. Dish rack (1) for a dishwasher, which dish rack has a plurality of jockey wheels (15, 16), which can be made to engage with rack guide rails (32) of a dishwasher in such a way that a first jockey wheel that bears on an upper face of a rack guide rail (32) is a support roller (15), that a second jockey wheel that bears on the lower face of the rack guide rail (32) is a guide roller (16), which limits a rotary movement of the dish rack (1) that occurs in the direction of gravity when the dish rack (1) is withdrawn, and that at least one securing element (17) is provided that limits a rotary movement of the dish rack (1) that occurs against the direction of gravity when the dish rack (1) is withdrawn, the support roller (15), the guide roller (16) and the at least one securing element (17) being combined to form a support mechanism (46) comprising two mounting plates (10) fixed on opposite sides of the dish rack (1),
   characterised in that
   at least one securing element (17) embodied as a projection is arranged on the mounting plate (10), which securing element (17) is embodied in such a way that the projection can be made to engage with the upper bearing surface of the rack guide rail (32), and in that at least one securing element (17) is arranged at a predetermined spacing from the upper bearing surface of the rack guide rail (32) when the dish rack (1) together with the mounting plate (10) is suspended on the rack guide rail (32).
2. Dish rack (1) according to claim 1,
   characterised in that
   at least two jockey wheels (15, 16) and at least one securing element (17) are provided on two opposite sides of the dish rack (1).
3. Dish rack (1) according to claim 1 or 2,
   characterised in that
   the two jockey wheels (15, 16) and the securing element (17) are arranged so as to form a triangle on each side of the dish rack (1).
4. Dish rack (1) according to one of the preceding claims,
   characterised in that
   the jockey wheels (15, 16) arranged on the mounting plate (10) and the securing element (17) are fixed to the dish rack (1).
5. Dish rack (1) according to one of the preceding claims,
   characterised in that
   the jockey wheels (15, 16) arranged on the mounting plate (10) and the securing element (17) are fixed to the dish rack (1) so as to be detachable.
6. Dish rack (1) according to one of the preceding claims,
   characterised in that
   a first, a second, a third, and a fourth guide position (11, 12, 13, 14) are provided on the mounting plate (10),

   - the first and the second guide positions (11, 12) being allocated to an upper bearing surface of the rack guide rail (32), and the third and fourth guide positions (13, 14) to a lower bearing surface of the rack guide rail (32),

   - the first and the third guide positions (11, 13) being allocated at the front in the direction of withdrawal of the disk rack (1), and the second and the fourth guide positions (12, 14) at the rear in the direction of withdrawal of the dish rack (1),

   - the projection (17) being provided at the second guide position (12) of the mounting plate (10) and one jockey wheel (15, 16) in each case at the first and the third guide positions (11, 13).
7. Dish rack (1) according to one of the preceding claims,
   characterised in that
   the securing element (17) and the mounting plate (10) are formed in a single piece.
8. Dish rack (1) according to one of the preceding claims,
   characterised in that
   the securing element (17) is embodied as a separate component and connected to the mounting plate (10) in a friction-locked manner.
9. Dish rack (1) according to one of the preceding claims,
   characterised in that
   the securing element (17) rests on the upper bearing surface of the rack guide rail (32) when the dish rack together with the mounting plate (10) is suspended on the rack guide rail (32), and a force acts against the direction of gravity on a, in the direction of withdrawal, front section of the disk rack (1).
10. Dish rack (1) according to one of the preceding claims,
    characterised in that
    the securing element (17) has a curvature approximating to the rack guide rail (32) in sections in order to bring about the greatest possible overlap with the rack guide rail (32).
11. Dish rack (1) according to one of the preceding claims,
    characterised in that
    fixing means (18, 19, 20, 21, 22) are embodied on the mounting plate (10) for the purpose of static, detachable fixing to the dish rack (1).
12. Dish rack (1) according to claim 11,
    characterised in that
    the fixing means (18, 19, 20, 21, 22) are embodied as latching connections for the purpose of latching on at least one, in particular horizontally oriented, wire strut (41, 44) of the dish rack (1).
13. Dish rack (1) according to claim 11 or 12,
    characterised in that
    the fixing means (18, 19, 20, 21, 22) are embodied in a single piece with the mounting plate (10).
14. Dish rack (1) according to one of the preceding claims
    characterised in that
    the mounting plate (10) is formed out of an injection-mouldable plastic.
15. Dish rack (1) according to one of the preceding claims,
    characterised in that
    axles (24, 27) of the jockey wheels (15, 16) are embodied in a single piece with the mounting plate (10).
16. Dish rack (1) according to claim 15,
    characterised in that
    the axles (24, 27) have a peripheral bead (25, 28) on an end facing away from the mounting plate (10) for the purpose of securing the jockey wheels (15, 16).
17. Dish rack (1) according to claim 15 or 16,
    characterised in that
    the axles (24, 27) have a recess (26, 29) that is oriented axially and extends over the diameter of the axles.
18. Dishwasher with at least one dish rack (1) according to one of the preceding claims.

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