EP2992782A1 - Slide assembly - Google Patents

Abstract

A pullout guide comprises rails (1, 2) lying one after the other in sequence, and round rolling elements (4, 5) of circular cross-section each arranged between the two rails and adapted to roll on them, thereby forming a roller Allow displacement of one (2) of the two adjacent rails along the other rail (1). In order to reduce or eliminate the radial play, at least one (4) of the rolling bodies has a diameter of its cross section which is greater than the diameter of the cross section of the remaining rolling bodies (5), that larger diameter rolling body (4) between them two adjacent rails (1, 2) is biased and the other rolling elements (5) are instead installed with play (Fig. 2).

Description

The invention relates to a drawer slide with rails according to the preamble of claim 1.

Such a drawer guide is used to pull out of the housing of a device or from the body of a piece of furniture whose pull-out parts. In the case of the furniture, such a pull-out part can be, for example, a drawer or a storage level. In the devices, since these can be especially household appliances such as refrigerators or ovens, these pull-out parts in the case of refrigerators, for example, from Wännchen or Abstellebenen or in the case of ovens baking trays or baking trays.

There are basically two embodiments of pullout guides known: those without intermediate rails and those with at least one intermediate rail. The intermediate rails serve to extend the extension length.

In the first embodiment, the pullout guide comprises a guide rail and a track rail, wherein bearing means are provided between these two rails, which allow a displacement of the track rail along the guide rail. The guide rail can be attached to the housing of the device or to the body of the piece of furniture. The track can be attached to a pull-out part of the device or the piece of furniture. However, it is also possible that the running rail is releasably connected to the pull-out part of the device or the piece of furniture, as in the case of a baking tray.

In the second embodiment, the drawer slide, in addition to the guide rail and the track rail, may also include at least one intermediate rail disposed between the guide rail and the track rail. The bearing means, which allow a mutual displacement between adjacent rails are provided between the guide rail and the intermediate rail and between the intermediate rail and the running rail, so that both a displacement of the intermediate rail along the guide rail and a displacement of the running rail along the intermediate rail is possible.

If the pullout guide has a plurality of intermediate rails, then the above-mentioned bearing means would each be provided between two adjacent intermediate rails, so that one of them is displaceable along the other.

As bearing means, it is preferable to use round rolling elements in cross-section, such as e.g. Spheres, wheels, cylinders and generally rollers, even those which do not have a rectangular longitudinal section. The use of balls is very common. These rolling elements roll on respective raceways provided on the rails, and they are generally caged.

Pull-out guides, especially telescopic slide guides with at least one intermediate rail, inherently have a radial play. This radial clearance is created by a play between the rolling elements, in particular the balls, and the rolling element raceways, in particular the ball raceways, which are provided on the guide rail, the running rail and the possibly existing intermediate rails. The degree of freedom resulting from the radial clearance allows the rolling elements, in particular the balls, to move somewhat transversely to the respective raceway. The running rail and possibly existing or existing intermediate rails can thereby tilt transversely to the respective track. The pull-out rails, ie the running rail and the intermediate rail or the intermediate rails, thereby feel "wobbly" and "imprecise". Since the pull-out rails are mounted one above the other, it may happen that not all rails tilt in the same way. As a result, the front caps, which may be located on the rails, are crooked, pointing in particular in different directions. As a result, a disturbing visual impression is generated.

But if this radial play did not exist, then each cage with its contained balls would no longer be displaceable along the rails or it would only be displaceable by attaching a large force, since the resistance offered by the friction would be considerable.

However, the cage must be displaceable, since it is necessary to bring it together with its rolling elements, in particular with the balls in the correct position. If one were to attach a large force, there would also be the danger that the cage (s) and / or the rolling elements, in particular the balls, would thereby be damaged.

In addition, should the cage shift slightly over the correct position over time and during use, it would not be easy to bring it into its correct position and thus the rails would not be able to reach their final positions. The respective rail could then no longer be fully extended or not fully retracted.

From the WO 2014/016141 A1 a pull-out guide is known in which at least one first rolling element has a larger diameter than at least one second rolling element, wherein the modulus of elasticity of the first, larger rolling element is smaller than the modulus of elasticity of the second rolling element with the smaller diameter.

The US 3,488,097 A . DE 10 2010 042 180 A1 and AT 8 732 U1 show more pullout guides.

The object of the invention is to propose an improved pullout guide, the on the one hand reduces or eliminates the radial clearance and on the other hand, however, allows a displacement of the Wälzkörperkäfige.

In a pullout guide of the type mentioned, this object is achieved by the features of the characterizing part of claim 1.

According to the invention, it is provided that, with reference to each pair of adjacent rails, at least one of the rolling elements, each arranged between them, has a diameter of its cross section which is larger than the diameter of the cross section of the remaining rolling elements, each between the same two adjacent rails are arranged. The enlarged diameter is selected such that said at least one larger diameter rolling element is biased, in particular slightly biased, between the two adjacent rails between which it is disposed, and the remaining rolling elements are each disposed between the same two adjacent rails are instead built in with gameplay.

Due to the larger diameter rolling element, which is biased between the rails and therefore has no play, the remaining rolling elements have a game, in particular a slight game, so that they can be easily moved and / or can roll without obstruction. The preloaded rolling element can no longer move transversely to the raceway, so that a mutual tilting of the rails is prevented. However, since only with respect to each pair of adjacent rails only one rolling element is installed biased when moving the respective cage, only the resistance of the rolling element with the enlarged diameter must be overcome, so that the radial clearance is removed by the inventive solution, on the other hand, a smooth sliding the cage is possible, which in turn allows a smooth movement of a rail along the other rail.

Due to the features of claim 2, an embodiment is claimed with only two rails, ie without intermediate rails, conveniently as

Provides rolling elements balls. It is further provided according to the invention that at least one ball of the balls arranged according to one or more rows of balls between the two rails has a larger diameter than the diameter of the remaining balls which are arranged between the two rails. The enlarged diameter is chosen so that it is at least one ball between the two rails is biased, in particular slightly biased, and the remaining balls, which are arranged between the two rails, are instead installed with play. This allows a smooth movement of the running rail along the guide rail, in which case the ball with the enlarged diameter does not allow the running rail tilts relative to the guide rail.

By the features of claim 3, an embodiment is claimed, which in addition to the guide rail and the running rail has an intermediate rail and conveniently provides as rolling elements balls. It is further provided according to the invention that at least one ball arranged according to one or more rows of balls between the guide rail and the intermediate rail balls and at least one ball of each arranged between the intermediate rail and the running rail balls have a larger diameter than the diameter of the other balls, respectively are arranged between the same two rails. The enlarged diameter is selected so that each of these at least two balls is biased between the two rails of the pair of adjacent rails between which it is disposed and the remaining balls arranged between the same two rails are instead installed with play ,

It is advantageous if, as claimed in claim 4, the diameter of the at least one larger diameter ball by 0.05 to 0.1 mm larger than the diameter of the other balls. These values are particularly suitable for drawer slides intended for household electrical appliances. For such pullout guides diameter of the balls are common, which are in the range of 3 to 5 mm. For example, for balls with a diameter of 4 mm, the above-mentioned diameter increase would be a percentage value of 1.2% to 2.5 % to the said diameter of 4 mm.

These percentages are generally applicable as claimed in claim 5, thus also for spheres whose diameter is not in the particular og. Range of 3 to 5 mm.

It is advantageous if the rolling elements have the same deformability. In this way it can be ensured that the one or more rolling elements with the larger diameter, which are biased against the other rolling elements are not compressed by a load. This makes it possible to ensure that even with a given load, in particular in the usual load or the rolling elements loaded with the larger diameter and remain biased and remain the other rolling elements with play. The deformability of the rolling elements can be understood as their modulus of elasticity.

The rolling elements are preferably made of metal. It is advantageous if all rolling elements are made of the same metal.

According to a further advantageous development, the rails have a high bending stiffness in the vertical direction. The bending stiffness is in particular so high that the rails are not deformed by a predetermined load, in particular by the usual load or only deformed such that even with a load or the rolling elements loaded and biased with the larger diameter and the other rolling elements stay installed with game.

According to a further advantageous development, as claimed in claim 8, the rows of balls, each arranged between the two rails of each pair of pairs of adjacent rails, are arranged in Y-arrangement. In this case, it is advantageous if, as claimed in claim 7, the at least one larger diameter ball is arranged in the middle ball row.

However, it is also possible that the rows of balls, each arranged between the two rails of each pair of the pairs of adjacent rails, are arranged in an X-arrangement, as claimed in claim 8.

• Fig. 1 schematisch einen Querschnitt einer ersten Ausführungsform der erfindungsgemäßen Auszugsführung mit einer Führungsschiene, einer Laufschiene und Wälzkörpern, die gemäß zwei Wälzkörperreihen angeordnet sind;
• Fig. 2 schematisch einen Längsschnitt durch die Auszugsführung nach Fig.1;
• Fig. 3 schematisch einen Querschnitt eines ersten Beispiels einer zweiten Ausführungsform der erfindungsgemäßen Auszugsführung, mit einer Führungsschiene, einer Zwischenschiene, einer Laufschiene und Wälzkörpern die gemäß Wälzkörperreihen angeordnet sind, die ihrerseits in einer Y-Anordnung angeordnet sind;
• Fig. 4 schematisch einen Längsschnitt durch die Auszugsführung nach Fig. 3;
• Fig. 5 schematisch einen Querschnitt eines zweiten Beispiels einer zweiten Ausführungsform der erfindungsgemäßen Auszugsführung mit einer Führungsschiene, einer Laufschiene, einer Zwischenschiene und Wälzkörpern, die gemäß Wälzkörperreihen angeordnet sind, die ihrerseits in einer X-Anordnung angeordnet sind und
• Fig. 6 schematisch einen Längsschnitt durch die Auszugsführung nach Fig.5.

Further advantages and features of the invention will emerge more clearly from the following description of exemplary embodiments of the drawer slide according to the invention, which are explained purely by way of example, but not in a restrictive manner, on the basis of the enclosed drawings. In the drawings show:

• Fig. 1 schematically a cross section of a first embodiment of the pull-out guide according to the invention with a guide rail, a running rail and rolling elements, which are arranged according to two rows of rolling elements;
• Fig. 2 schematically a longitudinal section through the pullout guide after Fig.1 ;
• Fig. 3 schematically shows a cross section of a first example of a second embodiment of the pull-out guide according to the invention, with a guide rail, an intermediate rail, a running rail and rolling elements are arranged according to Wälzkörperreihen, which in turn are arranged in a Y-arrangement;
• Fig. 4 schematically a longitudinal section through the pullout guide after Fig. 3 ;
• Fig. 5 schematically a cross section of a second example of a second embodiment of the drawer slide according to the invention with a guide rail, a running rail, an intermediate rail and rolling elements, which are arranged according to rows of rolling elements, which in turn are arranged in an X-arrangement and
• Fig. 6 schematically a longitudinal section through the pullout guide after Figure 5 ,

In the figures, exemplary embodiments of two embodiments of a pull-out guide according to the invention are shown.

Such a drawer guide has known rails 1.2; 1,2,3, which are in a row one close to the other, and in cross-section round rolling elements 4,5 on. These rolling elements 4, 5 are each between the two rails of each pair of adjacent rails 1, 2; 1.3; 3.2 arranged and suitable for this 1,2; 1.3; 3; 2 to roll, so that they 4.5 a shift of a 2; 3; 2 of these respective two rails 1,2; 1,3,3,2 along the other 1; 1; 3 of them 1,2; 1.3; 3.2 allow.

It is inventively provided that referring to each pair of adjacent rails 1,2; 1.3, 3.2 at least one 4 of the rolling elements 4.5 each between these 1.2; 1, 3, 3, 2 are arranged to have a diameter of its cross section which is greater than the diameter of the cross section of the remaining rolling bodies 4, 5 which are each between the same two adjacent rails 1, 2; 1,3, 3,2 are arranged, that said at least one rolling element 4 with the larger diameter between the two adjacent rails 1,2; 1.3, 3.2 between which it is arranged 4 is biased and the remaining rolling elements 5, each between the same two adjacent rails 1.2; 1.3, 3.2 are arranged instead with game built-in

In the Figures 1 and 2 is an embodiment of a first embodiment of a above features according to the invention comprising pullout guide shown. The drawer slide shown in these figures has a fixed to a fixed part of a piece of furniture or a household electrical appliance guide rail 1 and a fixed or detachably connectable to a pull-out part of the piece of furniture or the household electrical appliance running rail 2. In the Figures 1 and 2 are the household electrical appliance or furniture not drawn.

In this embodiment, the rolling elements 4, 5 are arranged between the rails 1, 2 and are formed from balls which are arranged according to one or more rows of balls 6 in respective cages. In the Figures 1 and 2 but the cages are not drawn. According to the invention, at least one ball 4 arranged between the guide rail 1 and the track rail 2 balls 4.5 a diameter on the larger than the diameter of the other between the two rails 1.2 arranged balls 5, that these at least one larger diameter ball 4 between the two rails 1,2 is biased and the remaining balls 5 which are arranged between the two rails 1,2 are instead installed with play.

In the FIGS. 3 and 4 a first embodiment of a second embodiment of a above features according to the invention comprising pullout guide is shown. The second embodiment differs from the first embodiment described above due to the presence of an intermediate rail. Namely, the embodiment shown in these figures includes, in addition to a guide rail 1 and a track rail 2 which correspond to those previously described with reference to the first embodiment, an intermediate rail 3 disposed between the guide rail 1 and the track rail 2. Also in FIGS FIGS. 3 and 4 the furniture and the household electrical appliance are not drawn.

In this embodiment, the rolling elements 4, 5 are arranged between the guide rail 1 and the intermediate rail 3 and between the intermediate rail 3 and the running rail 2, and they are formed of balls which, as seen in FIG FIG. 3 shows, each housed according to three rows of balls 6 in respective ball cages 7. Each row of balls 6 has a plurality of balls.

The three rows of balls 6 are located at the corners of an imaginary triangle, and in the present application this particular arrangement will be referred to briefly as a Y arrangement.

The running rail 2 has a substantially rectangular cross-section. It surrounds the respective ball cage 7. Referring to the FIG. 3 The left vertical side wall is substantially vertical. It merges at its upper end with a radius in the upper horizontal side wall, which corresponds substantially to the radius of the balls of the upper left row of balls 6. Between the right vertical side wall and the upper horizontal side wall of the running rail 2, a corresponding radius for the balls of the upper right ball row 6 is present. The lower horizontal side wall of the track 2 joins the right vertical side wall to form a much smaller radius. In the region of the left end of the lower horizontal side wall, a running surface for the balls of the upper middle row of balls 6 is provided on the inside thereof.

The running rail 2 has a high bending stiffness in the vertical direction. Essential for this high bending stiffness are the vertical side walls.

The intermediate rail 3 engages in the interior of the running rail 2. For this purpose, a guide member is provided on the intermediate rail 3, the longitudinal grooves for the balls of the rows of balls 6, which are arranged between these rails 2.3. The longitudinal grooves form tracks for these rows of balls 6. The rows of balls 6 are, as already mentioned, in cross section according to the Fig. 3 apparent Y-arrangement arranged.

The guide rail 1 is configured substantially the same as the running rail 2, so that reference can be made to the description of the running rail 2 for their design. The intermediate rail 3 engages in the interior of the guide rail 1 in a manner corresponding to the manner described with reference to the running rail 2.

The running rail 2 may be attached to the movable part of a household electric appliance, in particular an oven, in particular in the region of the right, inner vertical side wall. The displacement of the running rail 2 can be limited by a stop pin provided at one end. At the other end of the track 2, a cover may be provided which may be formed by a bent sheet metal tab (not shown in the drawing). On the running rail 2, a baking sheet or the like can be placed.

According to the invention, at least one 4 of the balls 4, 5 respectively arranged between the guide rail 1 and the intermediate rail 3 and at least one 4 of the balls 4, 5 respectively arranged between the intermediate rail 3 and the running rail 2 have a diameter which is greater than the diameter the remaining balls 5 each between the same two adjacent rails 1.3; 3,2 are arranged, that each of these at least two balls 4 with the larger diameter between the two rails of the pair of adjacent rails 1,3, 3,2 between which it is arranged 4 is biased and the remaining balls 5 which between each of the same two adjacent rails 1.3, 3.2 are arranged instead are built with play.

These features are in the FIGS. 3 and 4 shown. How out Fig. 3 each one row of balls 6 lie on one side of the intermediate rail 3 and two rows of balls 6 on the other side thereof. 3

From the longitudinal section according to Fig. 4 It can be seen that, referring to the pair of adjacent rails 1,3, at least one ball 4 of the balls of the rows of balls 6 which are arranged between the guide rail 1 and the intermediate rail 3, has a diameter which is greater than the diameter of the remaining balls 5 the are each arranged between the two adjacent rails 1.3. As a result, the at least one ball 4 is biased with the larger diameter between these two adjacent rails 1.3, ie it is installed without play. The remaining balls 5, which are respectively arranged between said two adjacent rails 1,3, are instead installed with play.

In the figures, the enlargement of the diameter of the at least one ball 4 has been somewhat exaggerated. In reality, increasing the diameter of the at least one ball 4 causes extremely low elastic deformation of the rail material on which the ball 4 moves when one rail is displaced relative to another rail. Like from the 3 and 4 it can be seen that the at least one ball with the larger diameter is expediently arranged in the middle row of balls 6.

The same applies to the ball rows 6 arranged between the running rail 2 and the intermediate rail 3. From the cross section according to FIG Fig. 4 namely, it can be seen that, referring to the pair of adjacent rails 3, 2, at least one ball 4 of the balls of the ball rows 6 arranged between the intermediate rail 3 and the running rail 2 has a diameter which is larger than the diameter of the remaining balls 5, which are each arranged between the two adjacent rails 3.2. Also in this case, the at least one larger diameter ball 4 is biased between the two adjacent rails 3, 2. The remaining balls 5, which are each arranged between the two adjacent rails 3, 2, are instead installed with play.

In the FIGS. 5 and 6 a second embodiment of the second embodiment of the pull-out guide according to the invention is shown. Also this drawer guide comprises a fastened to a fixed part of a piece of furniture or a household electrical appliance guide rail 1, one fixed to a movable part of the furniture or household electrical appliance or detachably connectable track rail 2 and arranged between the guide rail 1 and the track rail 2 intermediate rail 3. In the FIGS. 5 and 6 are the furniture or household electrical appliance not drawn.

The differences of this embodiment with respect to the previously with reference to the FIGS. 3 and 4 described embodiment consist in the embodiment of the rails 1,2 and 3 and in the arrangement of the balls 4,5. In the case of this embodiment, the rows of balls 6 are arranged at the corners of an imaginary quadrangle or rectangle, and in the present application, this particular arrangement will be referred to briefly as an X-arrangement. In the figures, the cages are not drawn, within which the rows of balls 6 are arranged.

It is apparent from the figures that at least one ball 4 of the balls 4,5 of the rows of balls 6 between the guide rail 1 and the intermediate rail 3 are arranged has a diameter which is larger than the diameter of the remaining balls 5, which are each arranged between these two adjacent rails 1.3 and that at least one ball 4 of the balls 4.5 of the rows of balls 6 between the intermediate rail and the running rail 2 are arranged have a diameter which is larger than the diameter of the remaining balls 5, which are each arranged between these two adjacent rails 3, 2. The enlarged diameter is selected such that each of these at least two larger diameter balls 4 is biased between the two adjacent rails 1,3 and 3,2 respectively, and the remaining balls 5 are respectively biased between the rails of these two pairs of adjacent rails 1, 3; 3.2 are arranged instead are built with game.

With reference to both embodiments which have been described in order to achieve the technical effect according to the invention for a pair of adjacent rails, it is fundamentally possible to provide an arbitrary rolling body of the respective rolling bodies provided between the rails of this pair of rails with a larger diameter.

In the case of the first embodiment, those in the Figures 1 and 2 is shown and having an arrangement of the balls according to two rows of balls, therefore, the at least one ball 4 with the larger diameter of the lower or upper row of balls 6 belong.

Also in the case of the second embodiment of the second embodiment, that in the FIGS. 5 and 6 2 and having two X-arrays of balls, the at least one larger-diameter ball 4 of any row of balls 6 may belong to both the two adjacent rails 1,3 and the two adjacent rails 3,2.

Sometimes it is advantageous to select a particular ball 4 instead, as in the case of the first embodiment of the second embodiment, that in the FIGS. 3 and 4 is shown and has two Y-arrangements of the balls, which is advantageous in that the at least one ball 4 with the larger diameter with respect to the two adjacent rails 1.3 of the lower middle ball row 6 belongs and with respect to the two adjacent rails 3.1 of the upper middle row of balls 6, since there is a greater elastic deformation possibility the rails is present.

Still referring to both of the described embodiments, the effect of the present invention is achieved by providing a single larger diameter rolling element of each larger diameter between the two rails of a pair of adjacent rails, as shown in the figures. The provision of two, three, four or more of such rolling elements is conceivable and possible according to the invention, for example, to further increase safety against tilting of one rail with respect to another rail, but this would also increase resistance to displacement bring.

As an enlarged diameter of the balls 4, a diameter can be understood, the percentage of the diameter of the remaining balls 5 by 1.2% to 2.5% larger. For balls 5 with e.g. Diameter 4 mm, which is common for pullout guides used for household electrical appliances, this corresponds to an increase in diameter of the diameter of the balls 4 from 0.05 to 0.1 mm compared to the diameter of the remaining balls. 5

Claims (10)

Pullout guide with rails (1,2, 1,2,3) placed one after the other in sequence, and with rolling elements (4,5) round in cross section, each (4,5) between the two rails of each pair of adjacent rails (1,2, 1,3, 3,2) are arranged and suitable to roll on these (1,2, 1,3, 3,2), so that they (4,5) characterized a shift of one (2; 3; 2) of the two adjacent rails (1,2; 1,3; 3,2) along the other (1; 1; 3) of them (1,2; 1,3; 3,2) enable,
characterized,
in that, with respect to each pair of adjacent rails (1,2; 1,3; 3,2), at least one (4) of the rolling elements (4,5) is disposed between each of them (1,2; 1,3; 3,2). are arranged have a diameter of its cross section which is greater than the diameter of the cross section of the remaining rolling bodies (5), which are each arranged between the same two adjacent rails (1,2; 1,3; 3,2), that said at least a larger diameter rolling element (4) is biased between the two adjacent rails (1,2; 1,3; 3,2) between which it is arranged (4) and the remaining rolling elements (5) are each biased between the same two adjacent rails (1,2,3,3,2,2) are instead installed with play. Pull-out guide according to Claim 1, characterized in that the rails (1, 2) can be fastened to a fixed part of a piece of furniture or household electrical appliance guide rail (1) and a fixed rail (2) fixedly or detachably connectable to a movable part of the piece of furniture or household electrical appliance. in that the rolling elements (4, 5) are arranged between the guide rail (1) and the running rail (2) and consist of balls arranged in respective ball cages (7) according to one or more rows of balls (6) and that at least one (4) the balls (4, 5) arranged between the guide rail (1) and the running rail (2) have a diameter which is greater than the diameter of the remaining balls (5) arranged between the two rails (1, 2), said at least one larger diameter ball (4) is biased between the two rails (1, 2) and the others are disposed between the two rails (1, 2) eten balls (5) are instead installed with game. Pull-out guide according to Claim 1, characterized in that the rails (1, 2, 3) have a guide rail (1) which can be fastened to a stationary part of a piece of furniture or household electrical appliance, a running rail which can be fixedly or detachably connected to a movable part of the piece of furniture or household appliance ( 2) and between the guide rail (1) and the running rail (2) arranged intermediate rail (3) are that the rolling elements (4,5) between the guide rail (1) and the intermediate rail (3) and between the intermediate rail (3) and the running rail (2) are arranged and consist of balls which are arranged according to one or more rows of balls (6) in ball cages (7) and that at least one (4) of each between the guide rail (1) and the intermediate rail (3). arranged balls (4,5) and at least one (4) of each between the intermediate rail (3) and the running rail (2) arranged balls (4,5) have a diameter which is greater than the diameter of the remaining balls (5) which are respectively arranged between the same two adjacent rails (1,3; 3,2), that each of these at least two balls (4) with the larger diameter between the two rails of the pair of adjacent rails (1,3; 3,2) between which it is arranged (4) is biased and the remaining rolling bodies (5) each between the same two adjacent rails (1, 3, 3,2) are instead installed with play. Pull-out guide according to claim 2 or 3, characterized in that the diameter of said at least one ball (4) with the larger diameter by 0.05 to 0.1 mm larger than the diameter of the remaining balls (5). Pull-out guide according to claim 2 or 3, characterized in that the diameter of said at least one ball (4) with the larger diameter as a percentage of the diameter of the remaining balls (5) by 1.2 to 2.5% greater than the diameter of the other balls (5). Pull-out guide according to one of the preceding claims, characterized in that the rolling elements (4, 5) have the same deformability, in particular the same modulus of elasticity, wherein the rolling elements (4, 5) are preferably made of metal. Pull-out guide according to one of the preceding claims, characterized in that the rails have a high bending stiffness in the vertical direction. A pullout guide according to any one of the preceding claims, characterized in that the rows of balls (6) respectively disposed between the two rails of each pair of pairs of adjacent rails (1,3; 3,2) are arranged in Y-arrangement. Pull-out guide according to claim 8, characterized in that said at least one ball (4) with the larger diameter in the middle ball row (6) is arranged. A pullout guide according to any one of the preceding claims, characterized in that the rows of balls (6) respectively disposed between the two rails of each pair of pairs of adjacent rails (1,3; 3,2) are arranged in an X arrangement.

Images