Sliding-swivel mechanism of a shelf of a piece of furniture or household appliance and furniture or household appliance

Abstract

Sliding-swivel mechanism of a shelf (9) of a piece of furniture or household appliance for extending and raising the shelf (9) from a body (2) of the furniture or household appliance, comprising: - at least two pivot arms (41, 42) of a pivot mechanism (4) rotatably fixed to at least one of the side walls (21) of the body (2) with a first end parallel to the plane of the side walls (21) and arranged parallel to each other; - wherein a guide rail (31) of a sliding mechanism (3) is pivotably fixed at each second end of the pivot arms (41, 42) parallel to the plane of the side walls (21) such that the guide rail (31) can be pivoted from a lower position inside the body (2) to a raised, upper position at least partially outside the body (2); - at least one linearly displaceable running rail (32) in the guide rail (31) to which the shelf (9) is attached; - a lifting and lowering mechanism (4) supporting the raising and lowering of the pivot mechanism (4);A lever unit (5) pivotably fixed on the guide rail (32) parallel to the plane of the side walls (21), wherein at least one coupling element of a first coupling unit (7) is arranged on the lever unit (5) such that the coupling element can be coupled to a corresponding element of the first coupling unit (7) on at least one of the pivot arms (41, 42) by moving the guide rail (32) into a predetermined pivot position, characterized in that at least one coupling element of a second coupling unit (8) is arranged on the guide rail (32) or the support (9) such that the coupling element can be coupled to a corresponding element of the second coupling unit (8) on at least one of the pivot arms (41, 42) by moving the guide rail (32) into a predetermined pivot position.

Description

The present invention relates to a sliding-swivel mechanism for a shelf of a piece of furniture or household appliance according to the preamble of claim 1, as well as to a piece of furniture or household appliance. Such sliding-swivel mechanisms are used, for example, in dishwashers to raise and lower a lower shelf, in particular a dish basket, in order to enable the loading and unloading of the shelf in an upright position of the user, relieving the back muscles and spine. A sliding-swivel mechanism of this type is known, for example, from DE 10 2014 114 285 A1 or DE 10 2014 213 986 A1. The sliding-swivel mechanisms described therein essentially comprise a drawer slide and a swivel mechanism with two pivot levers, which, with the aid of a tension spring, assists in raising and lowering the tray. The user operates the sliding-swivel mechanism via a lever unit that assists in raising and lowering the mechanism. This lever unit already enables easier, less strenuous raising and lowering of the shelf. The object of the present invention is to further develop the sliding-swivel mechanism in such a way that the actuating forces required are reduced even further. This problem is solved by a sliding-swivel mechanism of a shelf of a piece of furniture or household appliance with the features of claim 1. The problem is further solved by a piece of furniture with the features of claim 17 and a household appliance with the features of claim 18. The sliding-swivel mechanism according to the invention has at least two pivot arms of a swivel mechanism which are rotatably fixed to at least one of the side walls of the body with a first end parallel to the plane of the side walls and are arranged parallel to each other. At each of the second ends of the swivel arms, a guide rail of a sliding mechanism is pivotably fixed parallel to the plane of the side walls in such a way that the guide rail can be pivoted from a lower position inside the body to a raised, upper position at least partially outside the body. A running rail is linearly movable relative to the guide rail. The shelf is attached to the running rail. The sliding-swivel mechanism also features a lever unit that supports raising and lowering the swivel mechanism and is pivotably fixed on the running rail parallel to the plane of the side walls. At least one coupling element of a first coupling unit is arranged on the lever unit in such a way that the coupling element can be coupled to at least one of the pivot arms by moving the guide rail into a predetermined pivot position with a corresponding element of the first coupling unit corresponding to the coupling element. Furthermore, at least one coupling element of a second coupling unit is arranged on the running rail or the shelf in such a way that the coupling element can be coupled to at least one of the swivel arms by moving the running rail into a predetermined pivot position with a corresponding element of the second coupling unit. With such a lever unit integrated into the sliding-swivel mechanism, it is possible to easily couple the lever unit with at least one swivel lever by simply pushing the guide rail and the corresponding lever unit into the swivel or lifting position. The second coupling unit enables even more precise control of the lifting and lowering process. This solution also further reduces the required actuation forces for lifting the tray, as the first coupling unit allows for an individual adjustment of the ratio of lifting distance to actuation distance for the application. Advantageous embodiments are the subject of the dependent claims. According to an advantageous embodiment, the coupling element of the first coupling unit is designed as a sliding or rolling element, preferably as a sliding bolt or as a roller, which can be guided in a corresponding element designed as a cam guide on at least one of the pivot arms, in particular integrally formed. The design of the coupling unit components as sliding or rolling elements and cam guides enables simple coupling of the respective components without the need for a complex coupling mechanism. The coupling and decoupling can be carried out without an additional actuating element or a special unlocking movement, thus enabling a smooth coupling or decoupling process. According to a further embodiment, the coupling element of the second coupling unit is designed as a sliding or rolling element, preferably as a sliding bolt or as a roller, which can be guided in a corresponding element, designed as a cam guide, arranged on at least one of the pivot arms, and preferably integrally formed with it. Alternatively, the cam guide can also be formed in a separate element that is arranged on one of the pivot arms. According to a particular embodiment, the cam guides of the first coupling unit and the second coupling unit are arranged on at least one of the swivel arms, in particular molded onto them. This makes it possible to design one of the swivel arms relatively simply and to design only the other swivel arm with cam guides. According to an alternative embodiment, the cam guide of the first coupling unit is arranged on a first of the swivel arms and the cam guide of the second coupling unit is arranged on a second of the swivel arms, in particular molded on. According to another embodiment, the coupling element of the first coupling unit is designed as a cam guide in which a correspondence element designed as a roller, arranged on at least one of the pivot arms, can be guided for controlling the sequence of the pivoting movement of the lever unit. According to a preferred embodiment, the lever unit itself has at least one lever arm pivotably fixed at a first end on the guide rail parallel to the plane of the side walls, to which the coupling element or the correspondence element of the first coupling unit is attached. At least one of the swivel arms, the extension guide, the first coupling unit, and / or the lever unit are designed in such a way as to ensure controlled operation of the lever unit. In particular, this prevents the tray from being lifted too early and the lever unit from moving too far beyond the tray's end positions. Advantageously, at least one of the swivel arms, the extension guide, the first coupling unit and / or the lever unit have corresponding stop or guide areas. In particular, corresponding guide areas are provided on the lever unit and on at least one of the swivel arms, preventing the storage tray from swiveling upwards too early. Alternatively, a corresponding element can interact with a guide area instead of a guide area. According to a further preferred embodiment, a linkage chain is pivotably attached to an end of the lever arm near a lever arm bracket, and the corresponding element of the first coupling unit, designed as a roller, is rotatably attached to the end of the linkage chain furthest from the lever arm. Using such a connecting link between the actuating lever and the cam guide, it is possible to decouple the position and path of the actuating lever and the cam guide from each other. This allows the path and position of the actuating lever to be determined first when designing the cam guide's shape, and then a suitable position for the cam guide to be determined. After the positions of the cam guide and actuating lever have been determined, the linkage chain still provides sufficient degrees of freedom in the kinematics of the sliding-swivel mechanism to couple the actuating lever to the cam guide via the linkage chain, which operates according to the toggle lever or rocker arm principle. In particular, by incorporating the articulated chain between the lever arm and the corresponding element of the coupling unit, the movement of the actuating lever can be designed in such a way that the handle attached to one end of the lever arm is positioned in the raised state of the lower shelf so that a cutlery tray located above the upper shelf can still be pulled out when the lower shelf is raised. The articulated chain preferably has at least two chain links that are rotatably coupled to each other. According to a further development of this embodiment, the coupling element of the second coupling unit is designed as a sliding or rolling element rotatably arranged on at least one of the pivot arms, which can be guided in a correspondence element designed as a cam guide and arranged, in particular integrally formed, on the lever arm bracket of the lever arm. According to a preferred embodiment, at least one section of the cam track of the first and second coupling unit is designed with an entry area. This allows the roller to be easily coupled into the cam guide. According to another preferred embodiment, at least one section of the cam track of the second coupling unit is semi-circular, which ensures precise control of the sequence when raising and lowering the storage unit. According to another preferred embodiment, a section of the cam track of the first coupling unit is designed as a dead center section. This allows the tray to be easily secured in a raised upper end position by pivoting the lever unit beyond its dead center, particularly without the need for a locking mechanism for the sliding-swivel mechanism in this position. This means that a secure upper end position of the tray is achieved without an additional locking element, and this position can be exited again without an additional release element. According to another preferred embodiment, a section of the cam track of the first coupling unit has a gradient optimized for the actuating force profile. This allows, in particular, the lifting of the tray with a virtually constant effort from the user. The furniture and the household appliance according to the invention are characterized by a sliding-swivel mechanism as described above. The following are further explained in detail with reference to the accompanying drawings. These show: Fig. 1 a perspective view of a first embodiment of a sliding-swivel mechanism installed in a household appliance designed as a dishwasher, in the position of the lower shelf retracted into the usable space; Fig. 2 a side view of the sliding-swivel mechanism with the shelf attached to it in the position shown in Fig. 1; Fig. 3 a side view of the sliding-swivel mechanism on the left in Fig. 1 with the shelf omitted, in the position shown in Fig. 1; Figs. 4, 5 to 6 corresponding to Figs. 1, 2 to 3, the household appliance and the sliding-swivel mechanism after the lower shelf has been moved out of the housing and before the sliding-swivel mechanism has been lifted; Figs. 7 and 8 corresponding to Figs. 5 and 6.6 corresponding illustrations of the sliding-swivel mechanism according to a slightly modified embodiment, Figs. 9 and 10 corresponding illustrations to Figs. 4 and 6 in the slightly raised position of the lower shelf, Figs. 11 and 12 corresponding illustrations to Figs. 9 and 10 in the fully raised position of the lower shelf, Fig. 13 a perspective exploded view of the sliding-swivel mechanism according to the embodiment shown in Fig. 12, Figs. 14, 15 to 16 corresponding views to Figs. 1, 2 to 3 of an alternative embodiment in which two cam guides are arranged on one of the swivel arms, Figs. 17 and 18 corresponding illustrations to Figs. 14 and 16 after the lower shelf has been moved out of the body before the sliding-swivel mechanism has been raised, Figs. 19 and 18 20. Illustrations corresponding to Figs. 17 and 18 in the slightly raised position of the lower shelf, Fig.21 u. Figure 22 shows representations of the sliding-swivel mechanism corresponding to Figures 19 and 20 in the fully raised position of the lower shelf; Figure 23 shows a perspective exploded view of the sliding-swivel mechanism shown in Figures 14, 15, 16, 17, 18, 19, 20, and 21 to 22; Figures 24, 25 to 26 show views corresponding to Figures 1 and 2 to 3 of a further embodiment of a sliding-swivel mechanism according to the invention with the lower shelf fully retracted; Figures 27 and 28 show representations corresponding to Figures 24 and 26 after the lower shelf has been moved out of the body before the sliding-swivel mechanism has been raised; Figures 29 and 30 show a representation corresponding to Figures 1 and 2 to 3. Figures 27 and 28 show corresponding perspective views in the slightly raised position of the lower shelf; Figures 31 and 32 show views of the household appliance corresponding to Figures 29 and 30.of the sliding-swivel mechanism in the fully raised position of the lower shelf, Fig. 33 a perspective exploded view of the sliding-swivel mechanism according to Fig. 24 , Fig. 25 , Fig. 26 , Fig. 27 , Fig. 28 , Fig. 29 , Fig. 30 , Fig. 31 to Fig. 32 . Figs. 34, 35 to 36 show views corresponding to Figs. 1, 2 to 3 of a further embodiment of a sliding-swivel mechanism according to the invention with the lower shelf fully retracted; Figs. 37 and 38 show views corresponding to Figs. 34 and 36 after the lower shelf has been moved out of the body before the sliding-swivel mechanism has been raised; Figs. 39 and 40 show a perspective view corresponding to Figs. 37 and 38 in the slightly raised position of the lower shelf; Figs. 41 and 42 show views corresponding to Figs. 39 and 40 of the household appliance or the sliding-swivel mechanism in the fully raised position of the lower shelf.Figures 43 and 44 show views of the household appliance and the sliding-swivel mechanism, respectively, corresponding to Figures 39 and 40, in the fully raised position of the lower shelf with an additional third shelf. Figure 45 shows a perspective exploded view of the sliding-swivel mechanism according to Figures 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 to 44. In the following figure descriptions, terms such as top, bottom, left, right, front, back, etc., refer exclusively to the exemplary representation and position of the sliding-swivel mechanism, storage tray, swivel arms, lever unit, extension guide, and the like as chosen in the respective figures. These terms are not to be understood as restrictive; that is, these references may change due to different working positions, mirror-symmetrical design, or similar factors. Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 to 13 show a first embodiment of a sliding-swivel mechanism according to the invention, with which a lower shelf 9, here in the form of a dish basket, can be lifted from the interior or usable space 22 of a household appliance designed here as a dishwasher 1 from a lower position into a loading and unloading position that is pulled out of the usable space and pivoted upwards. Figures 14, 15, 16, 17, 18, 19, 20, 21, 22 to 23 show an alternative second embodiment of such a sliding-swivel mechanism, in which a first pivot lever 41 and a second pivot lever 42 in a lowered starting position are not aligned vertically, as in the variant according to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 to 13, but are inclined forward at an angle of approximately 20°. This angled orientation of the pivot levers 41, 42 offers an advantage over the first version in that it allows for a greater extension in the lower position without the shelf 9 protruding too far forward in the upper end position. This improves access to the shelf 9 in the lower extended position, without the distance between the shelf 9 and the body 2 in the fully raised position differing from the position in the first version. Additionally, the angled orientation allows taller objects to be placed in the shelf without colliding with the lever unit 5, thanks to the modified pivot path. A center rail between the guide rail 31 and the running rail 32 is conceivable, but not necessary. An additional center rail can increase the stability and extension range of the drawer slide. Figures 24, 25, 26, 27, 28, 29, 30, 31, 32 to 33 show a third embodiment of a sliding-swivel mechanism according to the invention. Figures 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44 to 45 show a fourth embodiment of a sliding-swivel mechanism according to the invention. All variants share the basic structure of the extension guide 3 with a guide rail 31 and a running rail 32 which can be moved linearly in this guide rail, to which the lower shelf 9 is attached. As shown, for example, in Fig. 1, Fig. 14, Fig. 24 and Fig. 34, in the usable space 22 of the household appliance designed here as a dishwasher 1, in addition to the lower shelf 9, an upper shelf 10 is arranged above it, which can be pulled out of the usable space 22 of the body 2 of the dishwasher 1 via a further extension guide (not shown here). The same arrangement is also conceivable for one shelf 9 or two shelves 9, 10, arranged in a piece of furniture or another household appliance, for example a cooking appliance, such as an oven or the like, or a refrigerator. As further shown in Fig. 1, Fig. 14, Fig. 24 and Fig. 34, a sliding-swivel mechanism is preferably arranged on each of the side walls 21 of the furniture or household appliance in order to adequately support a shelf 9 such as the dish basket shown here. In principle, it would also be conceivable to arrange only a sliding-swivel mechanism in the usable space of the furniture or household appliance, for example to fix a board-like shelf or the like with a comparatively lower load-bearing capacity. All variants also share the basic design of the pivoting mechanism 4. As shown in Figs. 2, 15, 25 and 35, the pivoting mechanism 4 comprises two pivot arms 41, 42, each rotatably fixed to a side wall 21 with a first end parallel to the plane of the side walls 21 and arranged parallel to and spaced apart from each other. The pivot arms 41, 42 are rotatably fixed to a side wall bracket 43 via respective pivot joints 412, 422. The guide rail 31 of a respective extension guide 3 is fixed at the respective second ends of the swivel arms 41, 42 via swivel joints 411, 421. The second pivot arm 42 is preferably connected to the side wall bracket 43 via a force storage device 6, for example in the form of a coil spring or gas spring, such that pivoting the second pivot arm 42 assists the raising and / or lowering of the pivoting mechanism 4 by the force storage device 6. Additionally or alternatively, the force storage device 6 can also include a damper. Furthermore, all versions of the sliding-swivel mechanism feature a lever unit 5 which supports raising and lowering the swivel mechanism 4 and which is pivotably fixed on the running rail 32 parallel to the plane of the side walls 21. At least one coupling element of a first coupling unit 7 is arranged on the lever unit 5 such that the coupling element can be coupled to at least one of the pivot arms 41, 42 by moving the guide rail 32 into a predetermined pivot position with a corresponding element of the first coupling unit 7. All of the embodiment variants further feature a second coupling unit 8, wherein at least one coupling element of this second coupling unit 8 is arranged on the guide rail 32 or the shelf 9 such that the coupling element can be coupled to at least one of the pivot arms 41, 42 by moving the guide rail 32 into a predetermined pivot position with a corresponding element of the second coupling unit 8 corresponding to the coupling element. In the embodiments shown here, each of the coupling units 7, 8 preferably has a roller 71, 81 and a cam guide 72, 82 in which the respective roller 71, 81 can be guided. The main task of the scenery control system 82 is to prevent uncontrolled rail movement during the swiveling process. The cam guide 72 can advantageously be designed such that it has at least one sliding surface, in particular a raised surface, for guiding the lever arm 51 during the extension movement, so that rubbing of the lever arm 51 on the cam guide 72 or on the pivot arms 41, 42 is prevented. Alternatively, the at least one sliding surface 423 can also be arranged on one of the pivot arms 41, 42, as shown by way of example in Fig. 26 and Fig. 33. In the first three embodiments, as can be seen in Figs. 2, 15 and 25, the roller 81 of the second coupling unit 8 is attached to the guide rail 32. The roller 81 is preferably attached in a rearward area of ​​the guide rail 32 (in the extension direction x) to a roller bracket 35 that projects upwards towards the side wall bracket 43. All versions have in common a lever arm bracket 34 arranged on the running rail 32, on which the lever arm 51 is rotatably fixed. In the front area, the lever arm bracket has a stop 341 against which the lever arm 51 abuts in its lower position, thus preventing the lever arm 51 from lowering too far. For this purpose, a corresponding projection or offset is preferably provided on the lever arm 51. In all versions, the design of the cam 72 with an upper dead center ensures that the lever arm 51 cannot pivot further towards the body in the raised end position. This prevents a collision between the lever unit 5 and the body. Details of the first embodiment are described below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. 13. In the first embodiment shown in Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 to 13, the coupling element of the first coupling unit 7 is designed as a roller 71, which is attached in a rear area in the extension direction x of a lever arm 51 of the lever unit 5, as can be seen in Figs. 2 and 3. A front end of the lever unit 5 is designed as an operating handle 52. Preferably, the operating handle 52 connects the lever arms 51 of the respective sliding-swivel mechanism arranged on both sides of the storage tray 9. In this embodiment, the lever arm 51 has an angled edge 55 in its upper region to increase stability. The upper edge 55 of the lever arm 51, together with a stop 413 arranged on the first pivot arm 41, forms a guide area, which prevents the storage tray 9 from pivoting upwards during the extension movement. Accordingly, the cam guide 72 of the first coupling unit 7 is formed on the first swivel arm 41 of the swivel mechanism 4 in a correspondingly wide section of the first swivel arm 41. It is also conceivable to design the cam track 72 as a separate component and attach it to the swivel arm 41. To enable the roller 71 to glide past the second swivel arm 42 during the extension movement of the lower shelf 9 from the usable space 22 of the body 2, the second swivel arm 42 has a groove 424 in an area of ​​the swivel arm 42 corresponding to the mounting height of the roller 71, so that the lever arm 51 can pass the second swivel arm 42 without colliding with it. The predetermined pivot position, in which the coupling element and the correspondence element of the first coupling unit 7 come into operative contact with each other, is shortly before reaching the position shown in Fig. 4, Fig. 5 to Fig. 6, in which the shelf 9 is moved out of the usable space 22 of the body 2 into a position in which the shelf 9 can be lifted using the pivot mechanism 4. As shown particularly in Fig. 6, in this position the roller 71 of the first coupling unit 7 is engaged in the cam guide 72 of the first coupling unit 7. Simultaneously, the roller 81 of the second coupling unit 8 is engaged in the cam guide 82 of the cam guide 82 of the second coupling unit 8, which is integrally formed here on the second lever arm 42. To facilitate easy insertion of the rollers 71, 81 into the cam guides 72, 82, the cam guides 72, 82 preferably each have an entry area 73, 83, which may be rounded or funnel-shaped at its end face. Shortly before the fully extended position of the storage tray 9 is reached, the entry area 73 secures the lever arm 51 against premature upward pivoting. The inlet areas 73, 83 can be of different lengths depending on the requirements. In particular, Fig. 3 shows a second coupling unit 8 with a relatively short inlet area 83, while in an alternative sub-variant, shown in Fig. 8, the inlet area 83 is somewhat longer, allowing the shelf 9 to be extended somewhat further from the usable space 22 of the body 2 in the extension direction x. Due to the special design of the cam track 82 with a relatively long inlet area 83, the shelf 9 is moved against the extension direction x during the upward swiveling. This allows good access to the lower shelf 9 in the lower extended position of the sliding swivel mechanism, without the shelf 9 protruding over a door 23 of the dishwasher 1 during the swiveling upwards. While the cam guide 82 of the second coupling unit 8 has a semicircular section adjoining the inlet area 83 (in all four versions), the cam guide 72 of the first coupling unit 7 in the first version is shaped such that a section extending essentially vertically downwards extends from the horizontally running inlet area 73, at the end of which a dead-point section angled at right angles to this extends. The track 82 can also be designed as a straight line or as a free-form curve, allowing the travel path of the guide rail 32 to be controlled as needed during the upward pivoting process. In a circular track configuration, the guide rail is only fixed to one of the two pivot levers 41, 42. This dead-point section serves to hold the tray 9 in its upper raised end position shown in Fig. 11 and Fig. 12 without force, so that the tray 9 remains in this position without further operation by a user. The shape of the cam guide 72 is primarily designed to achieve an optimal actuating force profile. The actuating force during the pivoting process can be optimized by selectively modifying the shape of the cam guide 72 to suit the application and the available pivoting range. Figures 9 and 10 show the dishwasher and the swivel mechanism 4 in the slightly raised position, in which the roller 71 of the first coupling unit 7 has already entered the next section from the inlet area 73, while the roller 81 of the second coupling unit 8 is positioned at the transition to the semicircular section. Details of the second embodiment are described below with reference to Figs. 14, 15, 16, 17, 18, 19, 20, 21, 22 to 23. In contrast to the variant shown in Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 to 13, in the variant shown in Figs. 14, 15, 16, 17, 18, 19, 20, 21, 22 to 23, the cam guide 82 of the second coupling unit 8 is integrally formed on the same pivot arm 41 as the cam guide 72 of the first coupling unit 7. In this variant as well, the edge 55 of the lever arm 51 and the stop 413 on the first swivel arm 41 form a safeguard against premature lifting of the lever arm 51 during the extension of the shelf 9. Furthermore, in the lowered position of the shelf 9, as shown in Figs. 14, 15 to 16, the swivel arms 41, 42 are not vertically aligned, but are arranged inclined at an angle of 1° to 60°, preferably 10° to 30° in the extension direction, which makes it possible to extend the shelf 9 further out of the usable space 22 of the body 2 of the dishwasher than with a vertical arrangement of the swivel arms 41, 42. Figures 17 and 18 also show the fully extended, though not raised, position of the storage tray 9 and the sliding-swivel mechanism, in which the roller 71 of the first coupling unit 7 is engaged in the entry area 73 of the cam guide 72, and correspondingly, the roller 81 of the second coupling unit 8 is also engaged in the entry area 83 of the second cam guide 82. In this embodiment, the cam guide 72 is designed as a curve with a changing radius. Figures 19 and 20 show the second embodiment of this sliding-swivel mechanism in the slightly raised position of the shelf 9, in which the rollers 71, 81 are retracted into the curved area of ​​the cam guide 72 of the first coupling unit 7 and the semicircular area of ​​the cam guide 82 of the second coupling unit 8. Fig. 21 and Fig. 22 show the raised end position of the sliding swivel mechanism, in which the rollers 71, 81 have reached the rear end of the respective cam guide 72, 82. In this version as well, the cam guide 72 is shaped in such a way that in the raised end position the shelf 9 remains in a secure position without additional locking and is only lowered again by actuating the lever unit 5. By designing the cam track 72 as a curve with a changing curve radius, it is possible to achieve a smooth transition into the dead center area, which is advantageous compared to the first design variant. By individually designing the backdrop 72 near the dead center area, the path between the dead center and the safe end position can be easily adjusted. Fig. 23 shows the sliding-swivel mechanism again in a perspective exploded view. Details of the third embodiment are described below with reference to Figs. 24, 25, 26, 27, 28, 29, 30, 31, 32 to 33. In the third embodiment of the sliding-swivel mechanism shown in Figs. 24, 25, 26, 27, 28, 29, 30, 31, 32 to 33, the cam guide 72 of the first coupling unit 7 is not integrally formed on one of the pivot arms 41, 42, but rather on the rear end of the lever arm 51. In this embodiment, the cam guide 72 constitutes the coupling element. Accordingly, the rear end of this lever arm 51 is shaped with a larger surface area. The roller 71, designed here as a correspondence element, is in this case attached to the first swivel arm 41. This results in the coupling of the coupling element, designed here as a cam guide 72 and arranged on the lever arm 51, with the corresponding element designed as a roller 71 and arranged on the first pivot arm 41, only in the position of the shelf 9, which is extended from the usable space 22 of the body 2 as shown in Fig. 27 and Fig. 28. Here too, the scenery guidance 72 of the first coupling unit 7 is formed with an entry area 73 and a curve adjoining this. After reaching the extended position of the lower shelf before it is lifted, the rollers 71, 81 of the coupling units 7, 8 have also entered the entry area 73, 83 and, during the subsequent lifting, as shown in Fig. 29 and Fig. 30, are moved further into the respective curved areas of the cam guides 72, 82 until the lever arm 51 is almost vertical in the lifted end position and the rollers 71, 81 have reached the rear end of the cam guides 72, 82. In this version as well, the cam guide 72 is shaped in such a way that in the raised end position the shelf 9 remains in a secure position without additional locking and is only lowered again by actuating the lever unit 5. Fig. 33 shows another perspective exploded view of the sliding-swivel mechanisms of this design variant. In this third version variant, the roller 71 has the additional function of preventing the lever arm 51 from pivoting upwards too early during the extension of the shelf 9, by having the edge 55 of the lever arm 51 run as a guide surface under the roller 71. Figures 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44 to 45 show a fourth embodiment of a sliding-swivel mechanism according to the invention. In contrast to the previous embodiments of the sliding-swivel mechanism according to the invention, in the embodiment shown in Figs. 34-45 the roller of the first coupling unit is not directly attached to the end of the lever arm 51 furthest from the handle part 52, but to an end of a linkage chain pivotably connected to the lever arm 51 that is spaced apart from the end of the lever arm 51. In the embodiment shown here, the articulated chain consists of two chain links 53, 54, each preferably designed as an angled link with suitably shaped bends. It is also conceivable to link more than two such chain links together to form an articulated chain. The roller 71 of the first coupling unit 7 is rotatably attached to the free end of the second chain link 54, which is spaced apart from the first chain link 53, as shown, for example, in Fig. 35, Fig. 36 or Fig. 45. As shown in Figs. 36, 38, 40, 42 and 45, in this embodiment the cam guide 72 of the first coupling unit 7 is also formed or attached to the first pivot arm 41 of the pivoting mechanism 4 in a correspondingly wide section of the first pivot arm 41. Here too, the threading of the roller 71 of the first coupling unit 7 into the cam guide 72 takes place when the storage tray 9 is moved out of the retracted position shown in Fig. 34 into the extended, but not yet raised position shown in Fig. 37. At the same time, the roller 81 of the second coupling unit 8 is also guided into the entry area 83 of the cam guide 82 of the second coupling unit 8 during this movement. In this embodiment, the coupling element of the second coupling unit 8 is designed as a sliding or rolling element 81 rotatably arranged on the first swivel arm 41. This sliding or rolling element 81 can be guided in a correspondence element designed as a cam guide 82, arranged on the lever arm bracket 34 of the lever arm 51, in particular integrally formed or attached. The articulated chain with the interconnected chain links 53, 54 shown here operates according to the toggle lever or rocker arm principle. In the position shown in Figs. 41, 42, 43 to 44, in which the lower shelf 6 is moved into its raised end position, the arrangement of the roller 71 of the first coupling unit 7 at the end of the articulated chain, here at the free end of the second chain link 54, allows the handle part 52 to be moved in the fully raised position far enough towards the top of the raised lower shelf that a third shelf 11, optionally arranged in the dishwasher 1 or another household appliance or piece of furniture in the uppermost area of ​​the usable space 22, which is designed, for example, as a cutlery basket, can still be moved out of the usable space 22 when the lower shelf 6 is raised, i.e., above the handle part 52 in a horizontal direction. Reference symbol list 1 Dishwasher 2 Carcass 21 Side panel 22 Usable area 23 Door 3 Drawer guide 31 Guide rail 32 Running rail 34 Lever arm bracket 341 Stop 35 Roller bracket 4 Swivel mechanism 41 First swivel lever 411 Swivel joint 412 Swivel joint 413 Stop 42 Second swivel lever 421 Swivel joint 422 Swivel joint 423 Sliding surface 424 Groove 43 Side panel bracket 5 Lever unit 51 Lever arm 52 Handle part 53 First chain link 54 Second chain link 55 Edge 6 Power storage unit 7 First coupling unit 71 Roller 72 Cam guide 73 Infeed area 8 Second coupling unit 81 Roller 82 Cam guide 83 Infeed area 9 Shelf 10 Shelf 11 Shelf x Drawer direction

Claims

Sliding-swivel mechanism of a shelf (9) of a piece of furniture or household appliance for extending and raising the shelf (9) from a body (2) of the furniture or household appliance, comprising: - at least two pivot arms (41, 42) of a pivot mechanism (4) rotatably fixed to at least one of the side walls (21) of the body (2) with a first end parallel to the plane of the side walls (21) and arranged parallel to each other; - wherein a guide rail (31) of a sliding mechanism (3) is pivotably fixed at each second end of the pivot arms (41, 42) parallel to the plane of the side walls (21) such that the guide rail (31) can be pivoted from a lower position inside the body (2) to a raised, upper position at least partially outside the body (2); - at least one linearly displaceable running rail (32) in the guide rail (31) to which the shelf (9) is attached; - a lifting and lowering mechanism (4) supporting the raising and lowering of the pivot mechanism (4);A lever unit (5) pivotably fixed on the guide rail (32) parallel to the plane of the side walls (21), wherein at least one coupling element of a first coupling unit (7) is arranged on the lever unit (5) such that the coupling element can be coupled to a corresponding element of the first coupling unit (7) on at least one of the pivot arms (41, 42) by moving the guide rail (32) into a predetermined pivot position, characterized in that at least one coupling element of a second coupling unit (8) is arranged on the guide rail (32) or the support (9) such that the coupling element can be coupled to a corresponding element of the second coupling unit (8) on at least one of the pivot arms (41, 42) by moving the guide rail (32) into a predetermined pivot position. Sliding-swivel mechanism according to claim 1, characterized in that the coupling element of the first coupling unit (7) is designed as a sliding or rolling element (71) which can be guided in a correspondence element designed as a cam guide (72) on at least one of the swivel arms (41, 42), in particular integrally formed. Sliding swivel mechanism according to one of the preceding claims, characterized in that the coupling element of the second coupling unit (8) is designed as a sliding or rolling element (81) which can be guided in a correspondence element designed as a cam guide (82) on at least one of the swivel arms (41, 42), in particular integrally formed. Sliding swivel mechanism according to claims 2 and 3, characterized in that the cam guides (72, 82) of the first coupling unit (7) and the second coupling unit (8) are arranged on at least one of the swivel arms (41, 42), in particular are integrally formed. Sliding swivel mechanism according to claims 2 and 3, characterized in that the cam guide (72) of the first coupling unit (7) is arranged on a first of the swivel arms (41, 42) and the cam guide (82) of the second coupling unit (8) is arranged on a second of the swivel arms (42, 41), in particular is integrally formed. Sliding swivel mechanism according to claim 1 or 3, characterized in that the coupling element of the first coupling unit (7) is designed as a cam guide (72) in which a correspondence element designed as a roller (71) is guided for controlling the sequence of the swiveling movement of the lever unit (5). Sliding swivel mechanism according to one of the preceding claims, characterized in that the lever unit (5) has at least one lever arm (51) pivotably fixed at a first end on the guide rail (32) parallel to the plane of the side walls (21), to which the coupling element or the correspondence element of the first coupling unit (7) is attached. Sliding swivel mechanism according to one of claims 1 to 6, characterized in that a link chain is pivotably attached to an end of the lever arm (51) near a lever arm bracket (34) of the lever arm (51), at the end of which the corresponding element of the first coupling unit (7) designed as a roller (71) is rotatably attached. Sliding swivel mechanism according to claim 8, characterized in that the articulated chain has at least two chain links (53, 54) that are rotatably coupled to each other. Sliding swivel mechanism according to one of claims 1 to 2 and 8 to 9, characterized in that the coupling element of the second coupling unit (8) is designed as a sliding or rolling element (81) rotatably arranged on at least one of the swivel arms (41, 42), which can be guided in a correspondence element designed as a cam guide (82) arranged on the lever arm bracket (34) of the lever arm (51), in particular integrally formed. Sliding swivel mechanism according to one of the preceding claims, characterized in that at least a partial section of the cam guide (72, 82) of the first or second coupling unit (7, 8) is designed with an entry area (73, 83). Sliding swivel mechanism according to one of the preceding claims, characterized in that at least a partial section of the cam guide (72, 82) of the first (7) or second coupling unit (8) is semicircular. Sliding swivel mechanism according to one of the preceding claims, characterized in that at least a partial section of the cam guide (72, 82) of the first (7) or second coupling unit (8) is designed as a curve with a changing curve radius. Sliding swivel mechanism according to one of the preceding claims, characterized in that a partial section of the cam guide (72) of the first coupling unit (7) is designed as a dead center section. Sliding swivel mechanism according to one of the preceding claims, characterized in that at least a partial section of the cam guide (72) of the first coupling unit (7) has a slope adapted to an optimal actuating force profile. Sliding swivel mechanism according to one of the preceding claims, characterized in that a safeguard against lifting the lever unit (5) before the tray (9) is fully extended and / or that a safeguard against excessive swiveling of the lever unit (5) during the swiveling up and / or down is provided. Furniture comprising a furniture body (2) and at least one shelf (9) fixed in the furniture body (2) by means of a sliding-swivel mechanism, with which the shelf (9) can be extended and lifted out of the furniture body (2), characterized in that the sliding-swivel mechanism is designed according to one or more of the preceding claims. Household appliance, in particular dishwasher (1) or cooking appliance or cooling appliance, with at least one shelf (9) fixed to the inside of a usable space (23), in particular washing space or cooking space or cooling space, by means of a sliding-swivel mechanism, with which the shelf (9) can be pulled out and lifted from the usable space, characterized in that the sliding-swivel mechanism is designed according to one or more of the preceding claims 1 to 16.

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