US20150216303A1

US20150216303A1 - Pull-out guide, domestic appliance and item of furniture having a pull-out guide, and retrofit kit

Info

Publication number: US20150216303A1
Application number: US14/424,281
Authority: US
Inventors: Daniel Rehage; Alexander Hemminger; Daniel Reidt; Christian Koldewey
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2012-08-30
Filing date: 2013-08-16
Publication date: 2015-08-06
Also published as: WO2014032998A2; KR20150048215A; EP2890935B1; DE102013102846B4; CN104736935B; EP2890935A2; DE102013102846A1; WO2014032998A3; CN104736935A

Abstract

The invention relates to a pull-out guide, in particular for an item of furniture or a domestic appliance, having a stationary guide element and at least one running rail, wherein at least one roller body cage having a plurality of roller bodies is arranged between the guide element and the running rail. The pull-out guide is distinguished in that the guide element is formed by at least one wire. The invention also relates to an item of furniture or domestic appliance which has a pull-out guide of this kind, and to a retrofit kit for an item of furniture or domestic appliance in order to retrofit said item of furniture or domestic appliance with a pull-out guide of this kind.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a U.S. nationalization under 35 U.S.C. §371 of International Application No. PCT/EP2013/067189, filed Aug. 16, 2013, which claims priority to German Application No. 10 2012 108068.2, filed Aug. 30, 2012, and German Application No. 10 2013 102846.2, filed Mar. 20, 2013. The disclosures set forth in the foregoing applications are incorporated herein by reference in their entireties.
The disclosure relates to a pullout guide for an item of furniture or a domestic appliance having a stationary guide element and at least one slide rail, wherein a roller body cage having a plurality of roller bodies is arranged between the guide element and the slide rail. The disclosure furthermore relates to an item of furniture or domestic appliance which has such a pullout guide, and an add-on kit for an item of furniture or household appliance, to retroactively equip this item of furniture or domestic appliance with such a pullout guide.
Pullout guides for items of furniture or domestic appliances typically have a guide rail as a stationary guide element, on or in which a slide rail is guided so it is movable, mounted by roller bodies, which are arranged in a roller body cage. Profiles made of profiled sheet-metal have established themselves as guide rails or slide rails in this case. In this case, multiple slide rails, which are in turn guided in relation to one another, can be provided, to achieve a greater displacement distance of the pullout guide (so-called full pullouts). For example, three-part pullout guides having two slide rails are known, of which the slide rail guided directly on the stationary guide rail is also referred to as the middle rail.
Such pullout guides are also used, in a temperature-resistant embodiment, in domestic appliances, for example, baking ovens, to be able to conveniently pull cooked material carriers out of the cooking chamber of the cooking appliance. A pullout guide suitable for this purpose is known, for example, from document DE 10 2004 061 889 A1. The stationary guide rail is provided in this case with holding angles, which can be fastened on inner side walls of the cooking chamber of a cooking appliance, for example, via screws. However, the mounting of the pullout guide is complex and requires special fastening capabilities inside the cooking chamber.
Side rails are typically fixed in cooking chambers, for example, of baking ovens, on the inner side walls thereof, which are welded from rod-type wire material and provide the insertion capabilities for cooked material carriers.
So as not to have to provide additional mounting capabilities for pullout guides in addition to the fastening for such side rails, fastening pullout guides on the side rails is known. Document DE 20 2008 010 188 U1 discloses a pullout guide, in which a stationary guide rail is provided with quick fastening elements, which can be fixed in a clamping or latching manner on sections of the side rail, for example. A similar pullout guide is known from document WO 2011/147805 A1, in which a stationary guide rail is implemented as a hollow profile, which is pushed at least sectionally over a horizontal rod of the side rail. In this manner, the side rail stabilizes the guide rail, whereby it can be produced from particularly thin-walled material. The guide rail can be fixed in a clamping or latching manner on the rod of the side rail and optionally fixed by additional holding elements on the rod. The reduced material use in the guide rail is advantageous with regard to the production costs. A lesser material usage in the guide rail is also desirable from an energetic aspect, since the power consumption of the cooking appliance is reduced if less mass has to be heated to the operating temperature.
Furthermore, so-called wire roller bearings are known, for example, from document DE 34 36 406 A1. These are used for guiding a carriage along an arbitrary curved path. The path is predefined in this case by an appropriately formed wire bed, into which wires are inserted, which are used as running wires for roller bodies arranged in the carriage. Such a guide is not suitable as a pullout guide, on the one hand, and is very material intensive because of the wire bed, on the other hand.
The present disclosure is directed to a pullout guide with low material usage, which can be used in items of furniture or domestic appliance, in particular cooking appliances. The pullout guide is to be able to be added in a simple manner, in particular in cooking appliances which have the typical side rails. The present disclosure is also directed to an add-on kit, with which an item of furniture or domestic appliance can be supplemented with a pullout guide in a simple manner by a user and as much as possible without tools.
A pullout guide according to the disclosure of the type mentioned at the outset is a guide element is formed by at least one wire. In this manner, a pullout guide having a cost-effective and easily producible guide element may be implemented. Such a pullout guide can additionally be added easily to a domestic appliance or an item of furniture. This applies in particular to cooking appliances, since these typically already provide a wire suitable as a guide element as part of its side rail as a standard feature.
Domestic appliances in the meaning of this document are, for example, baking ovens, stoves, refrigerators and/or freezers, dishwashers, steam cooking devices, microwave ovens, washing machines, laundry dryers, food warmers, or grilling devices.
The term furniture also comprises, for example, apparatuses for laboratories, workshops, production plants, shops, vehicles, motor homes, travel trailers, ships, or yachts.
The guide element implemented as a wire can have any geometry which can be created by processes in nearly endless longitudinal extension. The wire can also be embodied as hollow in the meaning of a pipe or a tube. The external design can be described by a polygon. All oval or round shapes are also to be comprised.
Drawers, containers for refrigerated material, tabular pullouts, cooked material carriers such as baking sheets, grills, or dripping pans are mentioned as examples of pullout elements which are displaceably mounted using the guide system according to the disclosure.
In one embodiment of the pullout guide, the wire has a bent-over end section on at least one end. The bent-over end section represents a suitable fastening means, using with which the wire and, therefore, the pullout guide can be fixed on the item of furniture or appliance.
In a further embodiment of the pullout guide, the wire has, at least in a section in which it is in contact with the roller bodies, a continuously identical profile, in particular having a round, elliptical, rectangular, in particular square or diamond-shaped, or oval cross section. The continuously identical profile is advantageous for the implementation of runways for the roller bodies. Wires are available as semifinished products, for example, in the mentioned cross sections. They can thus be used as guide elements without further shaping method steps.
In a further embodiment of the pullout guide, the wire is self-supporting. This further minimizes the material usage.
In a further embodiment of the pullout guide, the slide rail has a C-shaped profile having a slotted opening. The bent-over end sections of the wire may lead through the slotted opening of the slide rail, whereby twisting of the slide rail around the wire is restricted. In this manner, the pullout guide can absorb a torque even in the case of a round cross section of the wire, without twisting around the axis of the pullout direction occurring.
In a further embodiment of the pullout guide, the slide rail has openings or outwardly embossed spherical caps, into which at least some of the roller bodies can be pressed, to be able to lead the bent-over end sections of the wire or the wire between at least two opposing roller bodies. Roller body pockets may be provided in the roller body cage in this case, in which the roller bodies are held in two different positions. Thus, parking positions for the roller bodies are provided, into which the roller bodies can be moved to be able to push the slide rail having inserted roller body cage onto the wire for mounting.
In a further embodiment of the pullout guide, auxiliary roller bodies, which are spaced apart from the roller bodies, and which press with their running surface against the wire and which can be moved out beyond the at least one bent-over end section of the wire, are provided in the roller body cage in a top front region and/or in a bottom rear region. The auxiliary roller bodies can absorb weight forces applied by a load, for example, a cooked material carrier on the slide rails and thus minimize tipping over of the front end of the slide rail. In addition, they do not restrict the pullout distance, since in contrast to the roller bodies they can be moved out beyond the bent-over end section of the wire.
Roller bodies and auxiliary roller bodies can be formed by various geometric shapes, for example, they can have a cylindrical design, a bulbous design, or a spherical design. They can also be embodied as rolls having a mounting. Suitable axles for the mounting are also conceivable.
In a further embodiment of the pullout guide, a rider which is fixable on the wire is provided, which is used as a stop for the roller body cage. The rider may be implemented as a corner stop, which is fixable at the transition to the bent-over end section. The roller bodies can thus be prevented from running off the bent-over end section, which can be linked to self-locking of the pullout guide by locking roller bodies.
In a further embodiment of the pullout guide, it is implemented as a full pullout or overextension pullout and has a further slide rail, which is mounted so it is movable on the slide rail via further roller bodies. A greater travel distance is thus achieved.
In a further embodiment of the pullout guide, two parallel and spaced-apart wires can advantageously be used as the guide element, whereby a higher carrying capacity of the pullout guide can be achieved. For example, the roller body cage is then implemented in two parts having an outer roller body cage and an inner roller body cage, wherein the inner roller body cage carries inner roller bodies which run between the two parallel and spaced-apart wires. The two parallel adjacent wires are prevented from being pressed together by the inner roller body cage, whereby the carrying capacity of the pullout guide is further increased.
If two wires lying in parallel are used as the guide element, in particular a one-piece embodiment of the ball cage is conceivable. The wires are located oriented in relation to one another so that they come into contact or nearly come into contact in the region of their longitudinal extension.
In addition to latching, further joining methods are also conceivable for the two roller body segments, they can be fixed on one another in an integrally-joined, formfitting, or friction-locked manner.
In a further embodiment of the pullout guide, the wire is part of a side rail of a cooking appliance. A pullout guide can thus be implemented in a cooking appliance, in which wire present in any case is used as a guide element. The solution is particularly cost-effective and material-saving.
In a further embodiment of the pullout guide, the wire having its bent-over end sections is implemented so that it is fixable in boreholes which are introduced into a furniture body. The bent-over end sections preferably have a spacing from one another in this case which corresponds to a spacing of rows of holes in the furniture body. Using a U-shaped bent wire implemented in a matching manner, a pullout guide is thus provided which is producible cost-effectively and in a material-saving manner and which can be inserted in an extremely simple manner into such items of furniture which are provided with rows of holes, for example, for receiving shelf boards, drawers, etc.
A household appliance, an item of furniture, and an add-on kit may include such a pullout guide.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 a and b show a first embodiment of a pullout guide inserted into a baking oven;

FIGS. 2 a, b, c and 3 a, b, c show various detail views of the pullout guide of the first embodiment;

FIG. 4 shows an alternative embodiment of the pullout guide of the first embodiment in a sectional view;

FIGS. 5 a, b show a further alternative embodiment of the pullout guide of the first embodiment in various views;

FIGS. 6 a, b, c and 7 a, b, c show a second embodiment of a pullout guide in various views;

FIGS. 8 a, b show an alternative embodiment of the pullout guide of the first or second embodiment in various views;

FIGS. 9 a, b show a third embodiment of a pullout guide in various views;

FIGS. 10 a, b and 11 a, b show a fourth embodiment of a pullout guide inserted into a baking oven;

FIG. 12 shows a schematic view of a roller body cage of the pullout guide of FIGS. 10 and 11, placed on a side rail of a baking ovens;

FIGS. 13 a, b, c show various views of the roller body cage from FIG. 12;

FIGS. 14 a, b, c show various views of an alternative embodiment of a roller body cage of the fourth embodiment of a pullout guide;

FIGS. 15 a, b show a fifth embodiment of a pullout guide inserted into a baking oven;

FIG. 16 shows a detailed sectional view of the pullout guide of the fifth embodiment;

FIG. 17 a, b show a sixth embodiment of a pullout guide inserted into a baking oven;

FIG. 18 shows a detailed sectional view of the pullout guide of the sixth embodiment;

FIGS. 19 and 20 respectively show a sectional view of a seventh and eighth embodiment of a pullout guide;

FIGS. 21 a, b, c show a ninth embodiment of a pullout guide inserted into a baking oven;

FIG. 22 shows a roller body cage of the ninth embodiment in a perspective detail view;

FIGS. 23 a to d show an outer cage of a roller body cage of the ninth embodiment in various views;

FIGS. 24 a to d show an inner cage of a roller body cage of the ninth embodiment in various views; and

FIGS. 25 a, b, c show a tenth embodiment of a pullout guide inserted into a furniture body.

FIGS. 1 a and 1 b show a baking oven 1 having open door 2 in a perspective schematic view, which gives a view into a cooking chamber 3 of the baking oven 1. The baking oven 1 is selected as an example of a household appliance. The pullout guide according to the disclosure described hereafter can also be used in another household appliance, for example, a steam cooker or a microwave oven.

A side rail 10 is attached to side walls of the baking oven 1 in the cooking chamber 3. The side rail 10 has two vertically arranged pillars 13, which are connected to one another via horizontally aligned wires 11. According to the disclosure, the wires 11 are used as guide elements for the pullout guide. The wires 11 have bent-over end sections 12 on their ends, which are typically connected via a welded bond to the pillars 13. Wire in a thickness between 4 mm and 8 mm is typically used as the material of the side rail 10. In this embodiment, cooked material carriers, for example, baking sheets, may be laid directly on the horizontally extending wires 11. As is visible in the upper region of the cooking chamber 3 in FIGS. 1 a and 1 b, in this case the horizontally extending wires 11 can be arranged closely adjacent in pairs, wherein the cooked material carrier is pushed between the two closely adjacent wires 11 to prevent tipping over as it is pulled out.
In the first embodiment shown in FIG. 1, a slide rail 20, which has an upwardly protruding contact pin 21 and is closed on its front end with a stopper 22, which also provides an upwardly pointing contact tab, is placed on one of the horizontally extending wires 11. A cooked material carrier can now be laid between the contact pin 21 and the tab of the stopper 22 on the guide rail 20, so that the cooked material carrier can be pulled out with lower friction and without the risk of tipping over. Contact pins and stoppers can also be erected from or embossed in the slide rail.
In FIG. 1 a, the slide rail 20 of the pullout guide is shown in a pushed-in position, while in contrast FIG. 1 b shows the slide rail 20 in a pulled-out position. As an example, only one of the wires 11 of the side rail 10 is provided with a slide rail 20 and thus used as a guide element. However, further or all of the horizontal wires 11 of the guide rail 10 can be provided with slide rails 20. Showing the extended slide rail on the opposite side wall was also omitted for reasons of illustration.
FIGS. 2 and 3 illustrate details of the pullout guide of the first embodiment according to FIG. 1 in various views. In all figures of this application and in all embodiments described herein, identical reference signs identify identical or identically acting elements.
FIG. 2 a shows the pullout guide of the first embodiment in a perspective exploded view. The side rail 10 is shown here without the baking oven 1, to enable a perspective view from the rear side of the side rail 10, i.e., from the sides facing toward the inner wall of the cooking chamber 3. It is apparent from the illustration that the slide rail 20 is implemented as a C-shaped profile hollow rail, produced from profiled sheet-metal material, for example.
A roller body cage 30, which is shown in an enlargement in FIG. 2 b, is inserted between the horizontal wire 11 of the side rail 10, which is used as a guide element, and the slide rail 20. The roller body cage 30, which is manufactured in one piece from a temperature-resistant plastic or metal, for example, has a plurality of roller body pockets 31, in which roller bodies 32, balls here, for example, steel balls, are inserted. In the present case, sixteen roller bodies 32 are provided, which are arranged in four rows extending along the displacement direction and in four planes aligned perpendicularly to the displacement direction. The sixteen roller bodies 32 are grouped in each case in two closely adjacent planes at each end of the roller body cage 30. It is obvious that another number of roller bodies 32 and/or another arrangement of the roller bodies 32 in relation to one another is possible. The roller body cage 30 is implemented as a C-shaped profile in a similar manner to the slide rail 20.
In FIG. 3 a, in the same manner as in FIG. 2 a, the pullout guide is shown in an assembled state. To put the slide rail 20 on the guide element 11, firstly the roller body cage 30 is inserted into the slide rail 20. This is performed with the stopper 22 removed, which is subsequently inserted, for example, in a latching manner, into the guide rail 20. In the region of the contact pin 21, the guide rail 20 has embossed areas, which prevent the roller body cage 30 from slipping out.
FIG. 3 c shows the pullout guide in an assembled state in a sectional view. It is recognizable in the sectional view that adjacent roller bodies 32, which press against the guide element, on the one hand, and against the slide rail 20, on the other hand, have a free spacing X from one another between their surfaces, which is less than the diameter Y of the wire 11 because of the geometry. Therefore, the slide rail 20 having inserted roller body cage 30 cannot readily be pushed onto the wire 11—the space between the two roller bodies 32 is not sufficient to push the roller body cage over the bent-over end sections 12 of the wire 11.
To nonetheless enable the slide rail 20, into which the roller body cage 30 is inserted, to be put on, the slide rail 20 has openings 23 in this embodiment, which are arranged in the region of the front end of the slide rail 20 and which are positioned so that the eight roller bodies 32 facing toward the inner wall of the baking oven 1 are at least partially movable into these openings 23. This degree of freedom of the roller bodies 32 enables the roller bodies 32 to be moved away from one another in pairs, in the case of a position of the roller body cage 30 in the region of the openings 23, that the slide rail 20 having the roller body cage 30 can be guided over the front bent-over end section 12 of the wire 11. The openings 23 can be implemented in this case so that the roller bodies 32 cannot pass completely through them. This can be achieved by a corresponding diameter of the openings 23 in relation to the diameter of the roller bodies 32. It is also possible to implement the openings 23 as conical having a diameter which enlarges toward the inside. In a further alternative embodiment, instead of openings 23, spherical caps 24 are implemented in the slide rail 20, for example, embossed, as shown in FIG. 4. It is also possible to put the slide rail 20 laterally onto the wire 11.
In FIG. 2 c, the roller body cage 30 is shown similarly to FIG. 2 b in an enlargement, wherein the roller bodies 32 are not inserted in FIG. 2 c. FIG. 2 c shows that the roller body pockets 31, which are located on the side facing toward the inner wall of the baking oven 1, into which those roller bodies 32 are thus inserted, which are moved into the openings 23 or the spherical caps 24 of the slide rail 20, are provided with a web 33, which divides the roller body pockets 31 into two regions, in which the roller bodies 32 can be positioned and in which they are held. To put on the slide rail 20 having the inserted roller body cage 30, the corresponding roller bodies 32 are each held in the outer position in the roller body pockets 31. If the roller body cage 30 is subsequently moved in relation to the slide rail 20, for example, during movement of the slide rail 20 in relation to the side rail 10, the corresponding roller bodies 32 are pressed via the web 33 into the inner, normal position inside the roller body pockets 31.
A grip tab 34 is arranged on the roller body 32, which protrudes in the direction of the inner wall of the baking oven 1 out of the slide rail 20. After the slide rail 20 is put on, the roller body cage 30 can be pushed toward the rear end, i.e., in the direction of the contact pin 21, via this grip tab. In normal operation, the roller body cage 30 should be located between the middle and the rear end of the guide wire 11 when the slide rail 20 is retracted into the cooking chamber 3. When the slide rail 20 is pulled out, the roller body cage 30 then accordingly moves forward with the slide rail 20, wherein it only covers half of the running distance of the slide rail 20, however. During the usage of the slide rail 20, the roller body cage 30 as a result normally no longer reaches the region of the openings 23 or spherical caps 24. If this nonetheless occurs, for example, because of increased friction between the roller bodies 32 and the wire 11, for example, caused by soiling of the wire 11, during a next pullout operation of the slide rail 20, the correct positioning of the roller body cage 30 in relation to the slide rail 20 is established again, since the roller body cage 30 cannot move further than up to the front end of the wire 11 and the slide rail 20 is then moved into the extended position while sliding over the roller bodies 32. During the next pushing-in operation, the correct positioning of roller body cage 30 and slide rail 20 in relation to one another has resulted again.
In the illustrated embodiment, a movement of the roller body cage 30 beyond the front end of the wire 11 is limited in that the roller bodies 32 facing toward the front and the inner wall of the cooking chamber 3 run against the bent-over end sections 12 of the wire 11. In this case, depending on the friction properties of the roller bodies 32 on the wire 11 and the slide rail 20, self-locking of the movement of the slide rail 20 can occur under certain circumstances. To prevent this, a rider can be fixed on the wire 11, against which the roller body cage 30 stops. Such a rider is shown in the top view in FIG. 5 a and in detail in FIG. 5 b. The rider is embodied as a corner stop 40 and can be formed from two halves which latch with one another, for example, made of temperature-resistant plastic or of metal. The two halves are laid around the wire 11 or the bent-over end section 12 in the region of the bend and latched with one another. The corner stop 40 can be manufactured from a sliding material and is additionally used for the perpendicular positioning of the slide rail 20. The corner stop 40 is then used as a twist lock for the slide rail 20.
In the embodiments without corner stop 40, the profile of the slide rail 20 comes into contact on at least one bent-over end section 12 in the event of tilting/rotation about the longitudinal axis. In this case, the bent-over end section 20 is used as a tilt protection or twist lock for the slide rail 20. It is also conceivable to connect the contact pins 21 of the left and right pullout guides via a synchronization rod and thus provide a twist lock for both pullout guides.
FIGS. 6 and 7 show a second embodiment of a pullout guide in different views. As in the first embodiment, a side rail 10 of the baking oven is shown separately outside the baking oven. A horizontal wire 11 of the side rail 10 is again used as a guide element for the pullout guide.
In contrast to the first embodiment, in the second embodiment case no openings 23 or spherical caps 24 are implemented in the slide rail 20, into which at least some of the roller bodies 32 plunge in a “park position”, to put the slide rail 20 having inserted roller body cage 30 onto the wire 11. Rather, notwithstanding this, firstly the roller body 30 is clipped onto the wire 11. For this purpose, the roller body cage 30 is manufactured from an elastic material, so that its C-shaped profile can accordingly bend open wide.
FIG. 6 a shows the individual components of the pullout guide in the unassembled state, FIG. 6 b shows the roller body cage 30 clipped onto the wire 11 of the side rail 10. FIG. 6 c shows this once again in an enlarged view. FIG. 7 a shows the guide rail in the assembled state, wherein FIG. 7 b shows the region of the roller body cage 30 enlarged once again and a sectional view through the pullout guide in the region of the roller body cage 30 is shown in FIG. 7 c.
After the roller body cage 30 is put on the wire 11, the slide rail 20, with removed stopper 22, is pushed over the roller body cage 30 along the direction of the wire 11. The slide rail 20 can then be closed again at the end using the stopper 22.
Twisting of the roller body 30 in the slide rail 20 is already prevented by the geometry of the slide rail 20. As also in the first embodiment, it has a C-shaped profile, which is essentially based on a square basic shape having rounded corners. The rounded corners form the runway for the roller bodies 32 of the roller body cage 30. In addition, the roller body cage 30 is reinforced with a projection 35 on the rear side, i.e., opposite to the opening. This projection 35 is implemented so that it moves in the slotted opening of the slide rail 20 and thus additionally prevents twisting of the roller body cage 30 within the slide rail 20.
An alternative embodiment of the front stop for the cooked material carrier is shown in FIG. 8 a in the top view and in FIG. 8 b in a detail view. In this alternative embodiment, which can be implemented, for example, in the pullout guide according to the first and second embodiments, instead of the stopper 22 in the front region of the slide rail 20, a contact pin 25 is provided, which is inserted from above into a corresponding hole on the top side of the slide rail 20. In contrast to the rear contact pin 21, this front contact pin 25 is embodied as a plug, which protrudes with a section 26 into the interior of the slide rail 20 and thus prevents the roller body cage 30 from being able to move forward out of the slide rail 20, on the one hand, and prevents the slide rail 20 from being able to move beyond the bent-over section 12 of the wire 11 to the rear into the cooking chamber, on the other hand. An erected tab is also conceivable as an alternative to the section 26.
FIG. 9 shows a third embodiment of a pullout guide. FIG. 9 a shows a slide rail 20 having inserted roller body cage 30 before the mounting on a wire 11 of a side rail 10 in the top view. FIG. 9 b shows a detail view in the region of the front bent-over end section 12 of the wire 11. In this embodiment, the slide rail 20 or the roller body cage 30 is not modified to mount the slide rail or the roller body cage 30 on the wire 11. Rather, the front bent-over end section 12 of the wire 11 is provided with notches 14 here, which enable the slide rail 20 having the roller body cage 30 to be put on. This embodiment is preferably used in conjunction with a rider, for example, a corner stop 40 as shown in FIG. 5, to prevent unintentional pulling of the slide rail 20 out beyond the end of the wire 11.
FIGS. 10 to 14 show a fourth embodiment of a pullout guide. FIG. 10 a shows, in a similar manner as FIG. 3 a, the pullout guide in an assembled state put onto a side rail 10, which is shown here without the baking oven 1 from the rear side of the side rail 10, i.e., with viewing direction into the cooking chamber 3. FIG. 10 b shows a portion in the region of the roller body 30 in detail. FIG. 11 shows the pullout guide in the same manner as FIG. 10, but in another pulled-out position.
As in the embodiment shown in FIG. 3, the roller body cage 30 has a grip tab 34 protruding out of the slide rail 20 in the direction of the inner wall of the baking oven 1 here. The pullout rail 20 itself is shown in FIG. 10 a without contact pin 21 or contact stopper 22. It is obvious that such contact elements can be provided as in the above-described embodiments.
The roller body cage 30 of the fourth embodiment is implemented similarly to the roller body cage 30 of the first embodiment in a middle region. As is apparent in the detail enlargements in FIGS. 10 b and 11 b, a further auxiliary roller body 37, in the form of a roller here, is provided on the top front (viewed in the pullout direction) and spaced apart from the roller bodies 32.
FIG. 12 shows the roller body cage 30 put onto the side rail 10 without the pullout rail 20. As is well visible in FIG. 12, the roller body cage 30 has a boom 36 on its front top end, in the front end of which the auxiliary roller body 37 is arranged. Similarly thereto, a further boom 36, which also carries an auxiliary roller body 37, is arranged on the bottom rear end of the roller body cage 30. The profile of the roller body cage 30, which is C-shaped in the middle region, is reduced to a web in the region of the boom 36.
When the corresponding auxiliary roller body 37 is located in the region of the wire 11 of the side rail 10, the auxiliary roller body 37 presses against this wire from above or below. In contrast to the roller bodies 32, however, the auxiliary roller body 37 can move out beyond the bent-over end section 12 of the side rail. This is shown, for example, in the perspective illustration in FIG. 10 b. As long as the front auxiliary roller body 37 is located in the region of the wire 11, it absorbs the weight forces applied by the cooked material carrier on the slide rail 20 and thus minimizes tipping over of the front end of the slide rail 20. When the front auxiliary roller body 37 is moved out beyond the bent-over end section 12 of the wire 11 as the pullout device is pulled out further, the rear auxiliary roller body 37 still presses against the bottom side of the wire 11 and counteracts twisting of the roller body cage 30 on the wire 11. Horizontal guiding of the slide rail 20 of the pullout guide is also thus assisted.
FIG. 13 shows the roller body cage 30 of this embodiment once again in various views. FIG. 13 a shows the roller body cage 30 in a perspective view diagonally from above, FIG. 13 b shows a side view, and FIG. 13 c shows a top view of the roller body cage 30.
In the same manner as in FIG. 13, an alternative embodiment of a roller body cage 30 of the fourth embodiment of the pullout guide is shown in FIG. 14. Like the roller body cage 30 shown in FIGS. 10 to 13, the roller body cage 30 shown in FIG. 14 also has auxiliary roller bodies 37 spaced apart from the roller bodies 32. In contrast to the previously shown embodiment, the profile of the roller body cage 30 is not reduced here to a web in the region of the boom 36, but rather is also embodied as C-shaped, as in the middle region.
FIG. 15 shows in partial FIGS. 15 a and 15 b, in a similar manner to FIG. 1, a further embodiment of a pullout guide inserted into a baking oven 1, wherein wires 11 of a side rail 10 of the baking oven 1 are used as guide elements. FIG. 16 shows the pullout guide in a sectional view.
In contrast to the previously shown embodiments, in this embodiment two adjacent wires 11 are used as the guide element. Furthermore, the pullout guide is implemented as a so-called full pullout, having three elements or rails which move in relation to one another. For this purpose, a further slide rail 50 is provided, which is mounted so it is movable on the slide rail 20, which in turn—as usual—moves on the stationary guide element, i.e., the wires 11 of the side rail 10, mounted via roller bodies 32 of the roller body cage 30. The cooked material carrier is accordingly laid on the further slide rail 50. For this purpose, contact pins 51 are provided in the front and rear regions, the function of which is similar to the contact pins 21 or 25 or the stopper 22 of the first embodiment.
It is apparent in the sectional view of FIG. 16 that the slide rail 20 has the cross section of a double S, wherein runways are implemented in the top part of the slide rail 20, in which further roller bodies 52 are positioned, via which the further slide rail 50 is mounted so it is movable on the slide rail 20. Roller body cages are provided both for the roller bodies 32 and also for the roller bodies 52, independently of one another. These are not shown for reasons of comprehensibility in FIG. 16.
A further embodiment of a full pullout or overextension pullout having a slide rail 20 and a further slide rail 50 is indicated in FIGS. 17 and 18 in the same manner as in FIGS. 15 and 16. In contrast to the embodiment of FIGS. 15 and 16, in the present case only one wire 11 is required for the pullout guide. In this pullout guide, as is shown well in FIG. 13 in a sectional view, the slide rail 20 is implemented in principle as in the first embodiments of FIGS. 1 to 14. Additionally, runways for the further roller bodies 52 are again embossed on the top side and the bottom side of the slide rail 20. The further slide rail 50, which is embodied as U-shaped here and which essentially completely encloses the slide rail 20, is guided via these runways.
Two further embodiments of a pullout guide are indicated in FIGS. 19 and 20 in the form of sectional views, similarly to FIGS. 16 and 18. These pullout guides are again implemented, like the examples in FIGS. 1 to 14, as simple pullout guides having only one slide rail 20. In both cases, however, similarly as in the embodiment of FIGS. 15 and 16, two adjacent wires 11 of the side rail 10 are used for the guide. This type of guide has the advantage of higher carrying capacity of the pullout guide, for example, if cooked material carriers having a high mass are to be able to be loaded.
A further such embodiment of a pullout guide implemented as a single pullout, in which two adjacent wires 11 of the side rail 10 are used for the guide, is shown in FIGS. 21 to 24.
In the present embodiment, the roller body cage 30 is embodied in two parts, having an outer roller body cage 30 a and an inner roller body cage 30 i.
In the overview illustration of FIG. 21 a and in the detail enlargement of FIG. 21 b, the pullout guide is shown fixed in the assembled state on a side rail 10 of a baking oven 1. The side rail 10 is shown from its rear side, so that a view into the C-shaped slide rail 20 is provided. The slide rail 20 is provided in the opening direction with a closure element (not shown). Furthermore, a rear delimitation element (not shown) is provided on the slide rail 20 on the side facing toward the rear wall of the body. Cooked material carriers can be received between the front closure element and the rear delimitation element. The closure element and the delimitation element can be embodied, for example, as the contact pins 21 or the contact stopper 22 of the above-described embodiments.
As the frontal view of FIG. 21 c shows, the outer roller body cage is constructed as essentially C-shaped and has outer roller bodies 32 a, which are arranged on the top side of the upper of the two wires 11 or the bottom side of the lower of the two wires 11. An inner roller body cage 30 i is fixed by a latching plug-in connection on the outer roller body cage 30 a. The inner roller body cage 30 i has four inner roller bodies 32 i arranged in two rows in each case here, which are predominantly embodied as truncated cone rolls. Both the axes of the inner roller body rolls and also the running surfaces in the contact point with the wire 11 are inclined in relation to a horizontal alignment. It is also conceivable to reverse the roller body arrangement.
The pullout guide is mounted by snapping the unit made of the slide rail 20 and the roller body cage 30 a onto the wires extending in parallel of the side rail 10. In this case, the elasticity of the wires 11 extending in parallel is utilized. Due to the short-term yielding of the wires 11, the roller body cage 30 a can enclose the two wires. The unit made of slide rail 20, roller body cage 30 a, and roller bodies 32 a is put onto the wires 11 transversely to the pullout direction of the pullout guide to be installed. The unit made of slide rail 20 and roller body cage 30 a already contains the roller bodies 32 a. The inner ball cage 30 i is thus inserted from the inner side of the baking oven rail 10 and latched with the outer roller body cage 30 a by latching means 38. The roller body cage 30 thus put onto the side rail 10 and joined together is shown once again in detail in a perspective view in FIG. 22. During the usage of the assembled pullout guide, such bending of the wires 11 toward one another is prevented by the inserted inner roller body cage 30 i.
Details of the outer roller body cage 30 a are shown once again in FIG. 23 in various partial images a to d and details of the inner roller body cage 30 i are shown once again in FIG. 24, also in partial images a to d. In this case, in each case the partial image a shows a perspective view, the partial image b shows a side view in the direction of the longitudinal extension of the pullout guide, the partial image c shows a side view transversely to the viewing direction shown in the partial image b, and the partial image d shows a horizontal projection from above or below of the respective outer or inner roller body cage 30 a, 30 i. In these figures, the latch means 38 used for connecting inner and outer roller body cages 30 i, 30 a can be seen well.
A pullout guide according to the disclosure for use in a furniture body 4 is shown in three partial images in FIG. 25. The body of a chest of drawers is indicated here as an example as the furniture body 4. It has two parallel side parts 5, which are each provided on their inner side with a row of holes 6. Such furniture bodies are known, wherein either holding pins for shelf boards are inserted into the holes of the rows of holes 6 or pullout guides are screwed on via holding angles.
FIG. 25 a shows an example of three pullout guides according to the disclosure inserted into the furniture body 4, of which slide rails 20 are visible in this illustration. The pullout guides are shown in a pulled-out state in FIG. 25 b. In this illustration, the guide elements are visible, on which the slide rails 20 are mounted so they are movable with the aid of one or more roller body cages (not visible in this illustration) and using multiple roller bodies.
The guide elements are U-shaped curved brackets made of wire 7, which are inserted into the holes of the rows of holes 6. This is shown in detail in an enlarged illustration of the furniture body 4 in FIG. 25 c. A pullout guide having such a bracket made of wire 7 having bent-over end sections 8 is shown in the upper region of the figure, before it is inserted into the rows of holes 6. The pullout guide in the lower region of the figure is already inserted with the bent-over end sections 8 into an opening of the row of holes 6 in each case. With respect to the embodiments of the slide rail 20, and of the roller body cage (not visible here), reference is made to the above-described embodiments. Due to the use of a bracket made of wire 7, which is to be produced in a material-saving and cost-effective manner, as a guide element of the pullout guide, such a pullout guide can be used cost-effectively, on the one hand, and very easily and so it can be added without tools, on the other hand, in a furniture body 4 having rows of holes 6. Corresponding fastening means known from the prior art can be provided on the slide rail 20 for fixing the slide rail 20 on movable furniture parts, for example, drawers.
It is to be noted that the full pullouts or overextension pullouts shown above in the embodiments of FIGS. 15 to 18 can also be implemented inside a furniture body by using one or two adjacent wire brackets 7. The single pullout guides shown above in FIGS. 19 to 24, in which two parallel wires are used as the stationary guide element, are also implemented accordingly by two brackets made of wire 7 in a furniture body 4.
All illustrated variants of the guide system according to the disclosure are also removable again and mountable again, for example, in another plane. Mounting or removal of the guide system is reversible.

Claims

1. A pullout guide, in particular for an item of furniture or a household appliance, having a stationary guide element and at least one slide rail, wherein at least one roller body cage having a plurality of roller bodies is arranged between the guide element and the slide rail, wherein the guide element is formed by at least one wire.

2. The pullout guide according to claim 1, wherein the wire has a bent-over end section on at least one end.

3. The pullout guide according to claim 1, wherein the wire, at least in a section in which it is in contact with the roller bodies, has a continuously identical profile, in particular having a round, elliptical, rectangular, in particular square or diamond-shaped, or oval cross section.

4. The pullout guide according to claim 1, wherein the wire is self-supporting.

5. The pullout guide according to claim 1, wherein the slide rail has a C-shaped profile having a slotted opening.

6. The pullout guide according to claim 5, wherein bent-over end sections of the wire lead through the slotted opening of the slide rail, whereby twisting of the slide rail around the wire is restricted.

7. The pullout guide according to claim 2, wherein the slide rail has openings or outwardly embossed spherical caps, into which at least some of the roller bodies can be pressed, to be able to guide the bent-over end sections of the wire or the wire between at least two opposing roller bodies.

8. The pullout guide according to claim 7, wherein the roller body cage, for at least the roller bodies which can be moved into the openings or the outwardly embossed spherical caps, has roller body pockets, in which the roller bodies are held in two different positions.

9. The pullout guide according to claim 8, wherein the roller body pocket has a bottleneck formed by a web, through which the roller body must pass to move from one into the other of the two different positions.

10. The pullout guide according to claim 2, wherein, in the roller body cage, in a top front region and/or in a bottom rear region, auxiliary roller bodies are provided spaced apart from the roller bodies, which press with their running surface against the wire and are movable beyond the at least one bent-over end section of the wire.

11. The pullout guide according to claim 10, wherein the auxiliary roller bodies are cylindrical rollers.

12. The pullout guide according to claim 1, wherein a rider which can be fixed on the wire is provided, which is used as a stop for the roller body cage.

13. The pullout guide according to claim 12, wherein the rider is implemented as a corner stop that can be fixed at the transition to the bent-over end section.

14. The pullout guide according to claim 1, implemented as a full pullout or overextension pullout and having a further slide rail, which is mounted via further roller bodies so it is movable on the slide rail.

15. The pullout guide according to claim 1, wherein two parallel and spaced-apart wires are used as the guide element.

16. The pullout guide according to claim 15, wherein the roller body cage is implemented in two parts having an outer roller body cage and an inner roller body cage, wherein the inner roller body cage carries inner roller bodies, which run between the two parallel and spaced-apart wires.

17. The pullout guide according to claim 1, wherein the wire is part of a side rail of a cooking appliance.

18. The pullout guide according to claim 2, wherein the wire can be fixed with the bent-over end sections in boreholes which are introduced into a furniture body.

19. The pullout guide according to claim 18, wherein the bent-over end sections have a spacing from one another which corresponds to a spacing of rows of holes in the furniture body.

20. (canceled)

21. An item of furniture or domestic appliance, wherein the item of furniture or domestic appliance has a pullout guide according to claim 1.