WO2017174794A1

WO2017174794A1 - Sliding and lifting mechanism for an item of furniture or domestic appliance and item of furniture or domestic appliance having such a sliding and lifting mechanism

Info

Publication number: WO2017174794A1
Application number: PCT/EP2017/058425
Authority: WO
Inventors: Daniel Rehage; Rüdiger Brinkman; Jana WROBEL; David Kruger; Arnold GURR; Benjamin BEXTERMÖLLER
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2016-04-08
Filing date: 2017-04-07
Publication date: 2017-10-12
Also published as: EP3439528A1; DE102017107541A1; CN108882828B; DE102017107544A1; CN108882828A; WO2017174793A1; EP3439528B1

Abstract

The invention relates to a sliding and lifting mechanism of a shelf of an item of furniture or domestic appliance, having a pull-out guide (6) having a carcass rail (61) and a running rail (63), and a lifting device, which is arranged on the running rail and bears the shelf. The sliding and lifting mechanism is characterized by the fact that a locking lever (6) is pivotably mounted on the running rail (63) and, when the shelf is raised, in a locking position blocks the movement of the running rail (63) with respect to the carcass rail (61), wherein, when the pull-out guide (6) is retracted completely, the locking lever (7) is moved into a rest position, in which, viewed in the retraction direction, the locking lever does not project above the running rail (63) or above the shelf. The invention further relates to an item of furniture or to a household appliance having such a sliding and lifting mechanism.

Description

Sliding and lifting mechanism for a furniture or household appliance and furniture or household appliance with such a sliding and

lifting mechanism

The invention relates to a sliding and lifting mechanism of a shelf of a piece of furniture or household appliance, comprising a pullout guide with a carcass rail and a running rail, and a lifting device which is arranged on the running rail and carries the tray. The invention further relates to a piece of furniture or a household appliance with a shelf, which may be designed, for example, as a drawer, as a wire basket or as a shelf, which is guided over such a sliding and lifting mechanism. Such a sliding and lifting mechanism with a scissors mechanism as a lifting device is known from JP 2006 204 591 A. The sliding and lifting mechanism is there for lifting a dish rack of a dishwasher. The basket is arranged on a scissors mechanism and can be pulled out together with this in a trough-like extract from the body of the dishwasher. When pulled out trough-like extract the basket can be lifted on a handle, the scissor mechanism extends. In the raised situation, loading or unloading of the crockery basket can take place in an upright position of the user which relieves the back muscles and the spinal column. Due to the trough-like extension of the dish basket, however, occupies the entire interior of the dishwasher in the inserted state and can not, as is the case with a majority of commercially available dishwashers, used together with a second, above arranged crockery basket.

From the document DE 10 2012 107 993 A1 discloses a sliding and pivoting mechanism for a shelf of a piece of furniture or household appliance is known in which the tray, such as a dish rack, is guided by pullout guides. The pullout guides are arranged on a pivoting mechanism, which allow pivoting of the pullout guides together with the tray upwards. In this case, a lock is provided which prevents a not fully extended shelf can be swung up, which could lead to a collision within the piece of furniture or household appliance, for example, with a further, above arranged crockery basket. In the sliding and lifting mechanism of JP 2006 204 591 A can be used to save space instead of the trough-like extract an extract with the help of laterally arranged guide rails. In the case, the sliding and lifting mechanism can also be used if further shelves or fixed shelves are arranged in the body of the furniture or household appliance, but which preclude insertion of the pullout guide when the lifting device is extended. It is therefore an object of the present invention, a sliding and

To provide lifting mechanism of the type mentioned, in which a retraction of the pullout guide is prevented when the lifting device is extended. It is another object of the present invention to provide a furniture or household appliance with such a sliding and lifting mechanism.

This object is achieved by a sliding and lifting mechanism or a furniture or household appliance with the respective features of the independent claims. Advantageous embodiments and further developments can be found in the respective dependent claims.

An inventive sliding and lifting mechanism of the type mentioned has a pivotally mounted on the running rail locking lever, which blocks a raised movement in a locking position movement of the running rail relative to the carcass rail, wherein the locking lever is moved in a full retraction of the pullout guide in a rest position in which he does not protrude in the retraction direction over the running rail or on the tray. About the pivotally mounted locking lever is a coupling of the tray or connected to the tray lifting device with the pullout guide such that the movement of the running rail is locked relative to the carcass rail and so the pullout guide can not be inserted when the tray is raised. By rest position is achieved that a complete retraction of the pullout guide is not hindered by a in the retraction, ie to the rear over the running rail and thus on the pullout guide or on the tray protruding locking lever, depending on which of said elements in fully retracted Position of the pullout guide is positioned further back (seen in the retraction direction). The blocking of the running rail relative to the carcass rail preferably takes place directly on the carcass rail, as a result of which a desired locking of the insertion movement with raised storage can be realized without requiring changes to the body of the furniture or of the household appliance. Alternatively, a blocking can take place with respect to a stationary part of the body, preferably with respect to a component of the body, which does not have to be specially configured for this purpose and is already present as standard, for example a side wall of the body. Of course, it is of course also possible to provide or mount a special element on the carcass which is used to lock the movement of the running rail relative to the carcass rail via the locking lever.

In an advantageous embodiment of the sliding and lifting mechanism, the locking lever on a lever arm on a stop surface, with which it is in the locking position in engagement with the carcass rail. Preferably, the stop surface in the direction of the lever arm and is located in the locking position at a forward in the extension direction edge of the

Carcass rail on. By arranging the abutment surface in the direction of the lever arm, the locking lever can be designed to save material and yet transmit large forces in the locking position. The use of a forward facing edge of the carcass rail, which abuts the stop surface in the locked position, also allows implementation of the locking mechanism without additional material. Advantageously, an existing front edge of the carcass rail can be used as a contact surface for the abutment surface of the locking lever.

In a further advantageous embodiment of the sliding and lifting mechanism of the locking lever is mounted on a locking rocker on the running rail, wherein the locking rocker pivotally mounted to the running rail and the locking lever is pivotally mounted to the rocker. In this embodiment, which can be used both in a drawer slide with as well as a drawer slide without middle rail, prevents the locking lever, regardless of a central rail, a movement of the running rail relative to

Cabinet member.

In a further advantageous embodiment of the sliding and lifting mechanism, a ramp is provided in order to swing up the locking lever during the complete retraction of the pullout guide. The ramp is in particular Positionally positioned to the household appliance, for example, by being arranged on the carcass rail of the pullout guide. When the tray is completely retracted into the body, the locking lever, for example, runs onto the ramp with a laterally projecting pin and is thus pivoted up into the rest position. It does not protrude beyond the pullout guide or the shelf to the rear of the carcass, so that the shelf can be inserted to a rear boundary of the interior of the carcass.

In an alternative embodiment, the locking lever is guided linearly displaceable, so as not to protrude beyond the running rail or the tray at the full retraction. He can then push the complete retraction of the shelf into the barrier rocker or through them, so as not to hinder this complete retraction. The locking lever may be displaceably mounted, for example, on the above-mentioned locking rocker.

In a further advantageous embodiment of the sliding and lifting mechanism, the tray and / or the lifting device is in engagement with the locking lever at least in the lowered position of the tray or the lifting device. This engagement is a coupling between storage or lifting device and the locking lever, so that a locking of the rails then takes place when the tray or the lifting device is raised. It can be provided, for example, that the locking lever by gravity and / or spring force at least in an extended position of the pullout automatically assumes the locking position when the locking lever is not engaged with the lifting device and / or the tray. This can preferably be achieved by an element is arranged on the tray or the lifting device, which acts on the lever arm at least in the extended position of the pullout guide and moves it out of the locking position of the lifting device. In this case, the element can contact the locking lever directly or else indirectly via, for example, the blocking rocker whose movement is transmitted to the locking lever.

In a further advantageous embodiment of the sliding and lifting mechanism, the lifting device is at least one scissors mechanism with scissor levers, wherein preferably each a scissors mechanism is arranged on two opposite sides of the tray.

In a further advantageous embodiment of the sliding and lifting mechanism, the lifting device is in an at least partially retracted position the pullout guide blocked. Preferably, for this purpose, a pawl on the pullout guide is arranged, which blocks in the at least partially retracted position of the pullout guide formed on the lifting device and / or the tray or arranged element against a lifting movement, for example, overlaps. The blocking prevents the lifting device can be raised before the drawer guide is fully extended. The locking hook can be arranged for example on a separate pawl, which is pivoted depending on the extended position of the pullout guide to release the tray or the lifting device. Alternatively, the locking hook can also be arranged on the blocking rocker.

An inventive furniture or household appliance with a shelf has a previously described sliding and lifting mechanism for storage. Advantageously, the sliding and lifting mechanism can be used in a dishwasher as a household appliance, wherein the tray is a crockery basket of the dishwasher.

The invention will be explained in more detail by means of embodiments with the aid of figures. The figures show:

Figure 1 is an overall isometric view of a dishwasher with a dish rack unit with sliding and lifting mechanism. Figure 2a is an isometric view of the sliding and lifting mechanism in the retracted sliding position and lowered lifting position of the wire basket.

2b shows a detail of Figure 2a in a detail view. an isometric view of a sliding and Hubmechanis mechanism in extended sliding and extended stroke position of the wire basket;

4a, b is a side and isometric detail view of a part of the

Sliding and lifting mechanism in a teilengefahrenen sliding position of the wire basket; Fig. 5a, b is a side and isometric detail view of a portion of the sliding and lifting mechanism in an intermediate position;

Fig. 6a, b is a side and isometric view in detail of a part of

Sliding and lifting mechanism with slightly raised

Wire basket; various side and isometric detail views of a portion of the sliding and lifting mechanism with further raised wire basket; an isometric view of another example of a sliding and lifting mechanism in extended Schiebestel development and lowered stroke position of a wire basket; a detail view of Fig. 8a; an isometric view of the sliding and lifting mechanism according to Figures 8a and 8b with slightly raised wire basket. a detail view of Fig. 9a; a side or isometric view in detail of a portion of the sliding and lifting mechanism according to Figures 8a and 8b; various side and isometric detail views of a portion of the sliding and lifting mechanism according to Figures 8a and 8b; 12a-c different side and isometric detail views of a

Part of a sliding and lifting mechanism in a development according to the invention; and

13a-c different side and isometric detail views of a

Part of a sliding and lifting mechanism in a further development of the invention.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. are used unless otherwise stated. Finally, to the selected in the respective figures exemplary representation and position of the sliding and lifting mechanism or the tray.

FIGS. 1 to 7 c show a first example of a sliding and lifting mechanism with a scissors mechanism in various working positions and different views. In all figures, like reference numerals designate the same or equivalent elements.

Shown is a dishwasher 1 as an example of a household appliance, in which the sliding and lifting mechanism is used for moving or lifting a crockery basket. It is noted that the sliding and lifting mechanism according to the application is also used in other household appliances, e.g. Cooking appliances or refrigerators, or even in a piece of furniture can be used. In this sense, the crockery basket, which can be moved or raised over the sliding and lifting mechanism, as an example of a shelf to understand. Other examples of a shelf are food carriers, containers, wire baskets in furniture or drawers or other extracts that can be moved out of a carcass and raised. FIG. 1 shows the dishwasher 1 in an overall isometric view with a body 2 and an opened appliance door 3. The body 2 has side walls 21, on the inner side of which run rails for guiding two crockery basket units 4, 5 are arranged. The upper crockery basket unit 4 in this case has a shelf in the form of a wire basket 41 as a crockery basket, which can be pulled out of the interior of the carcass 2 in a known manner in a horizontal direction in order to be able to empty or remove crockery.

The lower dish rack unit 5 is equipped with a sliding and lifting mechanism. It comprises a shelf in the form of a wire basket 51 as a dish rack, which is also horizontally movable and can be pulled out of the body 2. For this purpose, a pull-out guide 6 is arranged on each side of the dish rack unit 5, which is mounted on the side walls 21, so that the wire basket 51 can be moved horizontally with the door open 3 from the body 2.

In addition to the possibility of extending the wire basket 51 horizontally out of the body 2, a lifting device is provided in order to lift the wire basket 51 in the extended position and thus to be able to load and unload dishes more conveniently and back-friendly. In the example shown the lifting device is formed by a respective laterally arranged scissor mechanism, the scissor lever 53, 54 on each side 52 of the wire basket 51 has.

For the sake of clarity, in Fig. 1 and also in Figs. 2 and 3 of the lifting device only the scissor mechanism on one of the sides 52 of

Wire basket 51 shown. For static reasons, it makes sense to provide on each of the two sides 52 a synchronously moved scissors.

In order to be able to lift the wire basket 51 upwards with the least possible expenditure of force, the scissors mechanism is connected to a lever linkage, which in the present case comprises a toggle lever 55 and a pivoting lever 56. At the end of the pivot lever 56, a bow handle 57 is attached with one of its two ends. The other, here in the free end of the bow handle 57 is coupled to a corresponding pivot lever on the other side of the wire basket 51, which, as mentioned, is not shown here.

When pivoting the bow-shaped handle 57, the pivoting lever 56, which is rotatably mounted on the side 52, presses on the toggle lever 55 on one of the scissor levers, in this case on the first scissors-type lever 53, whereby the wire basket 51 is lifted and the scissors are extended. In a fully extended position of the scissors mechanism, the toggle lever 55 and the pivot lever 56 form a knee joint at their junction so that the wire basket 51 is securely locked in the upper position. In FIGS. 2 a and 3, the crockery basket unit 5 with the scissors mechanism and the pull-out guide 6 is shown separately in each case in an isometric view from the body 2 of the dishwasher 1. FIG. 2 a shows the wire basket 51 in the lowered and retracted position, while FIG. 3 shows the wire basket 51 in the extended and partially raised position. Fig. 2b shows a detail of Fig. 2a in a detailed view.

In these figures, it can be seen that the pullout guide 6 is a so-called full extension comprising three mutually movable rails, one

Carcass rail 61, a middle rail 62 and a running rail 63. Installed in the dishwasher 1, the carcass rail 61 is mounted in the body 2 of the dishwasher 1, for example screwed to the side wall 21. With the running rail 63 of the wire basket 51 is connected via the Scherenwerk. For this purpose, a pivot bearing 631 is arranged on a tab 635 at the rear end of the running rail 63 seen in the extension direction in which one end of the first scissor lever 53 is rotatably mounted. The opposite end of the first scissor lever 53 is slidably and rotatably mounted on the side 52 of the wire basket 51 in a linear guide 521. The other, second scissors lever 54 is the other hand wire basket side in a pivot bearing 522 pivotally mounted but relative to the wire basket 51 stationary. The opposite end of the second scissor lever 54 has a roller 541, with which this end of the second scissor lever 54 can be moved on the top of the running rail 63. When the wire basket 51 is lowered (FIG. 2a), the roller 541 is located substantially at the front end of the running rail 63; when lifting the wire basket 51, the roller 541 moves toward the pivot bearing 631.

On the middle rail 62, a locking lever 7 is pivotally mounted about a horizontal axis in a pivot bearing 621. The locking lever 7 prevents that when the wire basket 51 is raised, the running rail 63 or the middle rail 62 can be moved relative to the carcass rail 61.

Further, a pawl 8 is arranged on the running rail 63, which prevents not fully extended pullout guide 6 that the wire basket 51 can be raised via the Scherenwerk. The lock is shown in the detail drawing of Fig. 2b. The pawl 8 is C-shaped ausgebil det, with an upstanding leg forms a pawl 81. The pawl 8 is pivotally mounted on a side opposite the pawl 81 and engages in the pivot position shown a latch 51 2, which is arranged or formed on the wire basket 51. By engaging the bolt 51 2 lifting of the wire basket 51 is prevented.

The design and function of the locking lever 7 and the pawl 8 will be explained in more detail below in connection with FIGS. 4a to 7c. In FIGS. 4a, 5a, 6a and 7a, a detail of the dishwashing basket unit 5 in the region of the blocking lever 7 is shown in a side view in different positions of the wire basket 51. Figures 4b, 5b, 6b and 7b each show a comparable section in the corresponding position of the wire basket 51 in an isometric oblique view. Fig. 7c additionally shows the Position according to FIGS. 7a and 7b in an isometric oblique view with a view to the side of the pullout guide 6 not visible in FIGS. 7a and 7b.

In the partially extended position of the extension guide 6 shown in FIGS. 4 a and 4 b, lifting of the wire basket 51 is initially prevented by the pawl 8, which engages with the locking hook 81 via the bolt 512. The pawl 8 is C-shaped, wherein the pawl 81 forms one of the legs. In the illustration of Figures 5a and 5b, the pullout guide 6 is then fully extended and the wire basket 51 is still (or again) in the lowered position.

The locking lever 7 is in this example, a two-sided lever with a He- arm 71 which points in the direction of the body and a further lever arm 73, which points in the extension direction to the front. The lever arm 71 has an end section 72, on which a stop surface 721 extending substantially perpendicular to the longitudinal extent of the lever arm 71 is formed. At the bottom of the end portion 72, a run-on slope 722 is formed. In retracted or partially retracted state of the pullout guide 6 (see Fig. 2b), the run-on slope 722 runs on a surface of the carcass rail 61, so that the lever arm 71 is slightly raised relative to a horizontal position and the further lever arm 73 is slightly lowered relative to the horizontal position. In this case, the end section 72 can have an inwardly protruding section in the lower region of the run-on slope 722, with which it engages under the middle rail 62 (see also FIG. 4b). This section forms the actual abutment surface 721 of the lever arm 71st In the pull-out position shown in FIGS. 5a and 5b, the run-on slope 722 has left the support surface of the carcass rail 61 so that the end section 72 is no longer guided by the carcass rail 61.

At the opposite further lever arm 73, a further end portion 74 is formed, which provides a forward in the extension direction forward further stop surface 741. At the top of the further end portion 74, a further run-on slope 742 is formed.

In the illustrated pivot position of the blocking lever 7, the tab 635 arranged on the running rail 63, which holds the pivot bearing 631 for the shearing carries behind the further run-on slope 742 to the position shown in Figs. 5a and 5b slide past, since the further run-on slope 742 is formed only in the outer, the viewer in Fig. 5a facing portion of the other end portion 74.

The further abutment surface 741 ends below the tab 635 of the track 63 so that in the illustrated position, the tab 635 is not completely applied to the stop surface 741. In the region of the pivot bearing 621 of the locking lever 7 a not visible in these figures spring is arranged, which exerts a counterclockwise acting torque on the locking lever 7. When completely or partially retracted pullout guide 6 resting on the carcass rail 61 run-on slope 722 prevents rotation of the locking lever 7 from the unlocked position into a locking position. In the position of the pullout guide 6 in FIGS. 5a and 5b, the starting bevel 722 and the carcass rail 61 are no longer in contact with one another. A rotation of the locking lever in the locked position still does not take place because the wire basket 51, a wire finger 51 1 is formed, which presses from above on the further run-on slope 742. In the position shown in Fig. 5a, the tab 635 is already in engagement with the further stop surface 741, but there is still no locking of the pullout guide 6 instead. In this way it is achieved that despite fully extended pullout guide 6 of the locking lever 7 is still in the unlocked position, so starting from the position of Fig. 5a and 5b, a reinsertion of the pullout guide 6 is possible.

The pawl 81 opposite other leg of the C-shaped pawl 8 forms a release lever 82, with which the pawl 8 runs in the position shown in Figs. 5a and 5b on a lever arm 73 formed on the further and upwardly projecting activator 75.

The geometry of the pawl 8 and the activator 75 are selected so that in the unlocked position of the locking lever 7, the pawl 8 is slightly pivoted counterclockwise, so that the visible in Figs. 5a and 5b gap between the pawl 81 and the Bar 51 2 forms. This gap gives the wire basket 51 a (initially small) freedom of movement upwards. Thus, in the position of FIGS. 5a and 5b, it is possible to initially lift the wire basket 51 at least slightly by movement of the bow-shaped handle 57. The position of Fig. 5a and 5b, hereinafter also called intermediate position, thus allowing both a re-insertion of the wire basket 51, as well as a lifting of the wire basket 51st The horizontal as well as the vertical movement are thus unlocked.

FIGS. 6a and 6b show the sequence of movements which results when the bow handle 57 is raised from the position shown in FIGS. 5a and 5b. By raising or pivoting the bow handle 57, the scissors is extended and the wire basket 51 is first raised slightly. With the wire basket 51 and the wire finger 51 1, which has pressed in the intermediate position of Fig. 5a and 5b on the further run-on slope 742 of the locking lever 7 also rises. By lifting the wire finger 51 1 now pivots the locking lever 7 Federkraftbeaufschlagt counterclockwise and lowers accordingly with the end portion 72 from. By this lowering the stop surface 721 is now in front of the head of the carcass rail 61, whereby insertion of the middle rail 62 relative to the carcass rail 61 is prevented.

At the same time raises the further lever arm 73 and with it the activator 75, whereby the pawl 8 further pivots back counterclockwise and the pawl 81 completely releases the latch 51 2. A further lifting of the wire basket 51 is now possible, as this is also shown in Figs. 7a-c. With the raising of the further lever arm 73, the further abutment surface 741 lifts so far that the tab 635, on which the pivot bearing 631 is formed and which is arranged on the running rail 63, abuts against this further abutment surface 741 with a larger area, whereby a movement of the track rail 63 relative to the center rail 62 is also blocked. A raised wire basket 51 can thus no longer be retracted into the body 2 of the dishwasher 1.

In the illustration of FIG. 7c, it can be clearly seen that the pawl 8 is fastened to the pivot bearing 631 in this example. In this way, both the first scissors lever 53 and the pawl 8 are mounted on only one tab 635, which is mounted on the running rail 63. Furthermore, in the illustration of FIG. 7c, it can be clearly seen that the further run-on slope 742 is laterally offset relative to the lug 635 on the running rail 63, so that the lug 635 of the running rail 63 can pass laterally at the further run-on slope 742. The bolt 51 2 is in the example shown, a separate element which is mounted on the wire basket 51, for example, is clipped. It is alternatively conceivable to form a wire element of the wire basket 51 so that it forms the latch 512. After lowering the wire basket 51 into the intermediate position according to FIGS. 5a and 5b, the pull-out guide 6 can then be retracted again. The locking lever 7 acts in addition as a sequential control for the order of retraction of middle or running rail 62, 63. By the geometry of the locking lever 7, the locking of the middle rail 62 relative to the carcass rail 61 is first lifted with a drained wire basket 51. If the middle rail 62 then moves into the carcass rail 61, the locking lever 7 tilts slightly further clockwise due to the run-on slope 722 until the locking of the running rail 63 with respect to the middle rail 62 is canceled by the lowering of the further lever arm 73 and the pullout guide 6 then with the same relative movements between the carcass and middle rail 61, 62 and middle and running rail 62, 63 continues to retract. A second example of a dish rack unit with sliding and lifting mechanism 5 is shown in FIGS. 8a to 11c. The arrangement shown can, for example, as well as the dish rack unit of the first example in a dishwasher 1, as shown in Fig. 1, are installed. Like reference numerals in this example denote the same or equivalent elements as in the first example.

The crockery basket unit 5 comprises a pullout guide 6, which in turn is designed as a full extension with a carcass rail 61, middle rail 62 and running rail 63. The corresponding rails are arranged on both sides of a wire basket 51, which in turn is coupled to the respective running rail 63 via a scissor mechanism as a lifting mechanism.

Fig. 8a shows the pullout guide 6 in a fully extended position and the scissor lift in a fully lowered position. FIG. 8b shows a detail from FIG. 8a in a detail drawing. In Fig. 9a, in contrast to Fig. 8a of the wire basket 51 is slightly raised at also fully extended pullout guide. 9b again shows a section from FIG. 9a in detail. In the first example of Figs. 1-7c, the individual rails 61-63 of the pullout guide 6 are arranged substantially one above the other and the scissors is in the same vertical plane as the respective pullout guide 6. In the example of Figures 8a-1 1 c are the individual rails 61 -63 of the pullout guide 6 are each arranged side by side. The Scherenwerk is located in a vertical plane which is arranged between the pullout guide 6 and the side 52 of the wire basket 51.

Because of this situation, the attachment of the scissor mechanism, which in turn comprises crossed scissors levers 53 and 54 on each side of the wire basket 51, differs on the respective running rail 63. It can be seen in FIGS. 8a and 9a that, for example, the front one is in the extension direction End of the second scissor lever 54 is guided with a bolt 542 in a guide slot 632, which is formed in the running rail 63. The opposite end of the second scissor lever 54 is as in the first example in one

Swivel bearing 522 mounted on the side 52 of the wire basket 51 is mounted. The first scissor lever 53 is correspondingly slidably and rotatably mounted on the wire basket 51 at its front end as seen in the extension direction in a linear guide 521, whereas the rear end in the extension direction is rotatably mounted on the running rail 63 in a rotary guide (not visible here).

For raising the wire basket 51, a bow handle 57 is again provided, which is connected on both sides with the respective end of a pivot lever 56. The pivot lever 56 is pivotable in the present example on the

Pivot bearing 522 of the second scissor lever 54 mounted. The pivot lever 56 is coupled via a driving lever 58 with the first scissor lever 53. This cam lever 58 assumes a similar function as the toggle lever 55 in the first example. When pivoting the pivot lever 56 of the wire basket 51 is raised and the follower lever 58 moves over a top dead center, so that the wire basket 51 is locked in an upper position.

As in the first example of FIGS. 1 -7c, a blocking lever 7 is also provided in this example, which blocks the pullout guide 6 in the extended position when the wire basket 51 is lifted when the pullout guide 6 is pulled out. The locking lever 7 is in this example a one-sided lever, which is mounted in a pivot bearing 92 about a horizontal and perpendicular to the extension direction axis on a locking rocker 9 (see Fig. 8b, 8b).

In FIGS. 10a and 10b, details from the area of the blocking rocker 9 are shown. 1 0a shows a side view of a part of the pullout guide 6 with the hinged first scissors lever 53 and the locking rocker 9 in one Side view with a view of the inside of the pullout guide 6. Fig. 10b shows a similar section in an isometric oblique view.

The locking rocker 9 is in turn pivotally mounted in a pivot bearing 633 about a horizontal axis, wherein the pivot bearing 633 is mounted on a tab 634 which is fixed to the running rail 63, in this case in the region of the pivot bearing 631 for the first scissors lever 53. The tab 634 is guided vertically upwards, so that the pivot bearing 633 of the locking rocker 9 is positioned above the rails 61-63. The tab 634 is also arranged so as not to hinder movement of the rails 61-63 relative to one another. At the top of the locking rocker 9, a pawl 91 is arranged. The locking rocker 9 and the pawl 91 cooperate with a bolt 523 which is fixed to the wire basket 51, in the example shown on a plate-shaped element, which also carries the pivot bearing 522 of the second scissors lever 54.

As can be seen in FIGS. 8a and 8b, with the wire basket 51 lowered, the bolt 523 is positioned in the mouth-shaped opening of the pawl 91 and presses on the upper side of the blocking rocker 9, which is thus brought into a substantially horizontal position. The pivoting range of the locking lever 7 relative to the locking rocker 9 is structurally adjusted so that in a horizontal orientation of the locking rocker 9, the locking lever 7 is also substantially aligned horizontally. The abutment surface 721 of the locking lever 7 is raised so far that retraction of the rails 62, 63 is possible in this position, without the abutment surface 721 striking an edge of the body rail 61.

If the wire basket 51 is raised in the extended position of the pullout guide 6, the blocking rocker 9 tilts due to its weight distribution and / or due to an optional torsion spring, which may be arranged in the region of the rotary bearing 631, in the in Figs. 9a and 9b and also Fig. 10a and 10b shown position in which her seen in the extension direction rear end is lowered. In this pivotal position of the locking rocker 9, the locking lever 7 sets with its free end on the top of the middle rail 62 and thus in front of the front edge of the carcass rail 61st In this locking position of the locking lever 7 blocks the insertion of the running rail 63 relative to the carcass rail 61st The pivoting range of the locking rocker 9, which is necessary in order to release the bolt 523 from the mouth-shaped opening of the pawl 91, is greater than the pivoting angle, which the Sperrhe- at 7, until it rests on top of the middle rail 62. For this reason, the pivot bearing 92 is provided between the locking rocker 9 and the locking lever 7. If the wire basket 51 is lowered again, it slides past the locking hook 91 and pushes the locking rocker 9 again into the horizontal position shown in FIGS. 8a and 8b. With the locking rocker 9 also pivots the locking lever 7 in the horizontal position and lifts the blocking between the running rail 63 and the trunk rail 61. Accordingly, the wire basket 51 can be retracted in the lowered position.

In Fig. 1 1 a-1 1 c is reproduced in various detail representations of the area of the locking rocker 9 at least partially retracted pullout guide 6. FIG. 11a shows a side view, with a detail of this side view being enlarged in FIG. 11b. Finally, FIG. 11c shows an isometric oblique view.

When retracting the pullout guide slides the horizontal locking rocker 9 with its bottom over the upper longitudinal edge of the

Carcass rail 61. The pivot bearing 633 is positioned so that a

Pivoting from the horizontal orientation of the locking rocker 9 is blocked when retracted pullout guide 6 through the carcass rail 61. The bolt 523 on the wire basket 51 is thus caught in the mouth of the pawl 91; a movement of the bolt 523 and thus the wire basket 51 upwards is not possible.

Fig. 1 1 b shows the area of the pivot bearing 92 for the locking lever 7 in detail. The locking lever 7 is mounted in a recess of the locking rocker 9, by which the pivoting range of the locking lever 7 is determined relative to the locking rocker 9. As can be seen in FIGS. 8a and 8b, when the wire basket 51 has been lowered and the corresponding orientation of the blocking rocker 9 has been ensured, it must be ensured that the locking lever 7 is pivoted so far that the abutment surface 721 no longer rests against the body rail 61. This can in principle be achieved by a correspondingly configured lower edge of the recess in the blocking rocker 9. In the illustrated embodiment (see Fig. 1 1 b), an adjusting screw 76 is arranged in the form of a threaded pin in the locking lever 7, with the orientation of the locking lever 7 can be adjusted with lowered wire basket 51. FIGS. 1 2a-1 2c show a modification according to the invention of the second example of a sliding and lifting mechanism. In the figures, the area of the blocking rocker 9 with the locking lever 7 in various almost retracted or fully retracted positions of the pullout guide 6 is shown in various detailed representations. FIGS. 1 2a and 1 2b are side views, viewed from the outside, of the pullout guide 6 and the wire basket 51, respectively, whereas FIG. 1c is an isometric oblique view in which an inner side of the pullout guide 6 is visible. Depending on the design of an interior of the body 2 of the dishwasher 1, in which the crockery basket unit 5 enters, the rearwardly projecting locking lever 7 in the second example of the sliding and lifting mechanism can hinder optimal space utilization of the interior through the wire basket 51. This problem is solved by the modification of the second example according to the invention shown in FIGS. 1 2a-12c. In this case, a ramp 61 1 is arranged on the rear area of the carcass rail 61 seen in the entry direction. This is positioned on the carcass rail 61, in particular on the outside of the carcass rail 61, so that it does not stand in the way of a complete retraction of the crockery basket unit 5. Alternatively, such a ramp can also be arranged or formed on the carcass.

At the free end of the locking lever 7, a pin 723 is inserted, which protrudes so far outward that it runs when inserting the dish rack unit 5 on the inclined surface of the ramp 61 1 (see Fig. 1 2a). In the course of further insertion of the dish rack unit 5 follows the pin 723 of the slope of the ramp 61 1, whereby the locking lever 7 pivots about the pivot bearing 92 of the locking rocker 9 (Fig. 1 2b). As shown in Fig. 1 2c, in which the dish rack unit 5 is shown in the fully retracted position, the locking lever 7 is placed almost vertically in a rest position. He thus does not protrude in this rest position or at least not significantly beyond the rear end of the carcass rail 61 and the dish rack unit 5 and is not a complete insertion of the dish rack unit 5 in the way. The positioning of the pivot bearing 92 and the design of the ramp 61 1 are chosen so that the locking lever 7 is not completely vertical and is not moved above a top dead center of the pivotal movement, so that when re-extending the dish rack unit 5, the locking lever 7 is not in the set up Position remains, but the slope of the ramp 61 1 follows and when extending again the substantially horizontal position, which is also shown in Figure 1 2a occupies.

FIGS. 1 3a-1c show a further example according to the invention of a sliding and lifting mechanism in the area of the blocking rocker 9, with which, as in the example of FIGS. 1a-1c, a complete retraction of the dishwashing unit 5 into the interior of the body 2 is shown is reached.

With regard to its basic construction, the sliding and lifting mechanism is designed analogously to the previous examples. In particular, in this case, the locking rocker 9 is pivotally mounted on the dish rack unit 5 to prevent a lifting of the wire basket 51 with a pawl 91 which engages a pin 523 on the wire basket 51 when the crockery basket unit 5 is not fully extended from the body 2. The bolt 523 is formed in this example by a flared tab.

In contrast to the previous examples, the locking lever 7 is not pivotally mounted on the locking rocker 9, but guided linearly displaceable in a guide 93 in the locking rocker 9. At its rear end, the locking lever 7 again has a head area with stop surface 721. At its opposite end an upwardly projecting tab 77 is arranged on the locking lever 7. With the lying between the head portion and the tab 77 portion of the locking lever 7 is guided by the guide 93 linearly displaceable. The tab 77 prevents, on the one hand, that the locking lever 7 can be moved out of the guide 93 in the direction of its head region. On the other hand, between a formed on the locking rocker 9 spring bearing 94 and the tab 77, a spring 95 is arranged, which pulls the tab 77 on the locking rocker 9 and thus biases the locking lever 7 federkraftbeaufschlagt in the insertion direction. As with the embodiments previously shown, the locking lever 7 prevents the dish rack unit 5 from being retractable when the wire basket 51 is raised.

If, on the other hand, the dishwashing basket unit 5 is completely retracted, the blocking lever 7 with its abutment surface 721 strikes, for example, against an inner wall of the body 2 (see Fig. 1 3a). The dishwashing basket unit 5 can nevertheless be retracted further by the guide 93 and the spring 95 by the blocking rocker 9 moving along the blocking lever 7 (cf., Fig. 1 3b) until it has its head region where the stopper surface 721 is located. completely or almost completely in a rest position in the locking rocker 9 a has gone (see Fig. 13c). It is achieved that the locking lever 7 is not the furthest to the rear outstanding part of the dish rack unit 5 and thus obstructs the complete retraction of the tray, so here the wire basket 51. When re-extending the dish rack unit 5 is due to the tension of the spring 95 of the locking lever 7 in turn extended from the locking rocker 9.

reference numeral

1 dishwasher 2 carcass

21 sidewall

3 appliance door 4 crockery basket unit

41 wire basket

5 Crockery basket unit with sliding and lifting mechanism

51 wire basket

51 1 wire finger

512 bars

52 page

521 linear guide

522 pivot bearing (for the second scissor lever 54)

523 bolts

53 first scissor lever

54 second scissor lever

541 roller

542 bolts

55 toggle

56 pivot lever

57 bow handle

58 Drive lever 6 Pull-out guide

61 Carcass rail

61 1 ramp

62 middle rail

621 pivot bearing (for the locking lever 7)

63 Running track

631 pivot bearing (for the first scissor lever 53)

632 guide slot

633 pivot bearing

634 tab Tab locking lever

lever arm

end

stop surface

starting slope

pen

another lever arm

further end section

further stop surface

further start-up slope

activator

adjustment

Latch pawl

ratchet

Release lever Locking rocker

ratchet

Swivel bearing (for the locking lever 7) guide

spring mounting

feather

Claims

claims

1 . Sliding and lifting mechanism of a shelf of a piece of furniture or household appliance, comprising a pullout guide (6) with a carcass rail (61) and a running rail (63), and a lifting device which is arranged on the running rail (63) and carries the tray, characterized in that a locking lever (7) is pivotably mounted on the running rail (63) which, when the tray is raised in a locking position, blocks a movement of the running rail (63) relative to the carcass rail (61), wherein the locking lever (7) engages completely when retracting Pull-out guide (6) is moved to a rest position in which it does not protrude in the retraction direction over the running rail (63) or on the rear end of the tray.

2. Sliding and lifting mechanism according to claim 1, wherein the locking lever (7) on a lever arm (71) has a stop surface (721), with which it is in the locking position in engagement with the carcass rail (61).

3. Sliding and lifting mechanism according to claim 2, wherein the abutment surface (721) in the direction of the lever arm (71) and in the locking position bears against a forwardly pointing in the extension direction edge of the carcass rail (61).

4. Sliding and lifting mechanism according to one of claims 1 to 3, wherein the pull-out guide (6) has a central rail (62) arranged between the carcass rail (61) and the running rail (63).

5. Sliding and lifting mechanism according to one of claims 1 to 4, wherein a ramp (61 1) is provided to hochzuschwenken the locking lever (7) in the complete retraction of the pullout guide (6).

6. Sliding and lifting mechanism according to one of claims 1 to 4, wherein the locking lever (7) is linearly displaceable in order not to protrude beyond the running rail (63) in the full retraction.

7. Sliding and lifting mechanism according to one of claims 1 to 6, wherein the locking lever (7) is a one-sided lever which is mounted on a locking rocker (9) on the running rail (63), wherein the locking rocker (9). is pivotally mounted to the running rail (63) and the locking lever (7) is pivotally mounted to the locking rocker (9).

8. sliding and lifting mechanism according to claim 6 and 7, wherein the

Locking lever (7) on the locking rocker (9) is guided linearly displaceable.

9. Sliding and lifting mechanism according to one of claims 1 to 8, wherein at least in the lowered position of the tray, the lifting device and / or the tray is in engagement with the locking lever (7).

10. Sliding and lifting mechanism according to claim 9, wherein by weight and / or spring force at least at an extended position of the pullout guide (6) of the locking lever (7) automatically assumes the locking position when the locking lever (7) is not engaged with the lifting device and / or the tray is.

1 1. Sliding and lifting mechanism according to one of claims 1 to 10, wherein on the tray or on the lifting device, an element is arranged, which acts at least in the extended position of the pullout guide (6) on the locking lever (7) and moves it from the locked position ,

12. Sliding and lifting mechanism according to one of claims 1 to 1 1, wherein in an at least partially retracted position of the pullout guide (6), the lifting device is blocked.

13. Sliding and lifting mechanism according to claim 12, wherein a pawl (81, 91) on the pullout guide (6) is arranged, which in the at least partially retracted position of the pullout guide formed on the lifting device and / or the tray element or arranged locks for a stroke movement.

14. Sliding and lifting mechanism according to one of claims 1 to 13, wherein the lifting device is at least one Scherenwerk with scissor levers (53, 54).

15. Furniture or household appliance with a shelf and a sliding and

Lifting mechanism according to one of claims 1 to 14.

16. Household appliance according to claim 15, wherein the household appliance is a dishwasher (1) with a crockery basket (5) as a shelf.