EP2186438A2 - Furniture pull-out guide - Google Patents

Abstract

The guide (1) has a guide rail (2) fixed at a wall of a furniture body. A displaceable rail (3) is held at the guide rail by multiple rolling elements (5) e.g. balls. A retainer (4) engaged with the guide rail has multiple recesses in which the rolling elements are arranged, and multiple lubricant chambers for storing lubricant. The lubricant chambers are arranged in a longitudinal direction of the retainer between the recesses. Multiple guide vanes (6) are arranged in the lubricant chambers. An independent claim is also included for a method for distribution of lubricant to a furniture pull-out guide.

Description

The present invention relates to a furniture drawer slide according to the preamble of claim 1 and a method for distributing a lubricant to roller-mounted furniture drawer slides according to the preamble of claim 11.

In the known from the prior art and currently used furniture drawer guides an introduced lubricant is distributed by the rolling elements on the tracks of the pull-out rails and displaced the excess portion of the lubricant from the rolling elements. Depending on the structure of the lubricant, the excess portion is distributed uncontrollably and is thus used profitably only to a small extent. As a result, either the lubrication fails prematurely or else a greater amount, more than necessary, of lubricant is introduced into the pullout guides. However, such an excess of lubricant in the drawer guides can adversely affect the start-up and running properties. In addition, in the displaced lubricant, which is unused on the tracks of the rails, dirt accumulate, so that the running properties of the pullout guide are thereby additionally deteriorated. Another disadvantage is that the excess lubricant can leak over time from the pullout guides, resulting in Restrictions on the applicability of such a system can lead in particular to high hygiene requirements.

Object of the present invention is therefore to provide a furniture pullout guide, which eliminates the above-mentioned disadvantages and in the total less lubricant must be used to achieve adequate lubrication of the pullout guide.

This object is achieved by a furniture pullout guide with the features of claim 1 and by a method for distributing a lubricant to roller-mounted furniture pullout guides with the features of claim 11.

Advantageous developments are the subject of the dependent claims.

According to the invention, the cage has a plurality of lubricant chambers for storing a lubricant. This makes it possible that the introduced into the furniture drawer guide lubricant can collect at defined locations in the furniture drawer guide and can distribute from there again on the tracks of the furniture drawer slide. In addition, this allows a lower use of lubricant, which has a cost-reducing effect both during assembly and during operation.

According to one embodiment of the invention, the lubricant chambers guide vanes with a scraper edge aligned transversely to the direction of movement of the pullout guide and protruding from the surface of the cage at least one of the rails. Through this guide vanes is made possible that the displaced lubricant is collected on the one hand in the Schmierstofflcamznern and on the other hand, the lubricating point to be lubricated is fed again. Another advantage is that the continuous reintroduction of the displaced lubricant, this is durchgewalkt and thus longer maintains its lubricating properties.

According to a further embodiment of the invention, the guide blades protrude on both sides out of the surface of the cage. This makes it possible Apply the excess lubricant of the track of a rail on the opposite track of the second rail.

According to a further embodiment of the invention, a plurality of parallel-extending lubricant chambers are arranged transversely to the longitudinal direction of the cage in the longitudinal direction of the cage. In the region of these column-shaped, parallel lubricant chambers, in one embodiment the cage has a smaller wall thickness than in the remaining regions of the cage. This makes it possible that when the movable rail stop at an end point of the cage is preferably slightly deformed in this area of the smaller wall thickness, bringing the lubricant located in the lubricant chambers in contact with the raceways.

According to a further embodiment of the invention, one of the rails in the vicinity of a rail end at least one end stop, which is adapted to engage in at least one curved guide groove on an end face of the cage. This makes it possible that the stop of the movable rail at an end point of the cage is tilted transversely to its direction of travel by an angle α and thereby ensures a distribution of existing in the lubricant chambers and adjacent to the tracks lubricant on the tracks of the rails.

In the method according to the invention, the excess of non-lubricating film lubricant displaced by the rolling elements during relative movement of the first rail to the second rail will accumulate in the lubricant chambers and subsequent relative movement of the rails of the lubricant accumulated in the lubricant chambers will rebuild a lubricating film on the raceways serve the rails. This ensures that despite the use of a smaller amount of lubricant this is stored and distributed efficiently in the pullout guide.

To achieve a full or over excerpt can be arranged between the guide rail and the running rail at least one aussverlängernde middle rail.

Figur 1

eine perspektivische Ansicht einer erfindungsgemäßen Möbelauszugsführung,

Figur 2

eine Seitenansicht der Möbelauszugsführung aus Figur 1,

Figur 3

eine Schnittansicht der Möbelauszugsführung durch eine mit III in Figur 2 bezeichnete Schnittebene,

Figur 4

eine perspektivische Ansicht eines Käfigs,

Figur 5

eine mit V bezeichnete perspektivische Einzelheit des in Figur 4 gezeigten Käfigs,

Figur 6

eine perspektivische Ansicht einer Ausführungsform eines Käfigs mit eingesetzten Wälzkörpern,

Figur 7

eine Seitenansicht des in Figur 6 gezeigten Käfigs,

Figur 8

eine Schnittansicht des in Figur 7 gezeigten Käfigs durch eine mit VIII bezeichnete Schnittebene,

Figur 9

eine Schnittansicht des in Figur 7 gezeigten Käfigs durch eine mit IX bezeichnete Schnittebene,

Figur 10

eine Draufsicht auf den in Figur 7 gezeigten Käfig auf eine Stirnseite des Käfigs,

Figur 11

eine perspektivische Ansicht einer erfindungsgemäßen Möbelauszugsführung mit teilweise aufgeschnittenem Käfig,

Figur 12

eine mit XII bezeichnete perspektivische Einzelheit der in Figur 11 gezeigten Möbelauszugsführung,

Figur 13

eine Querschnittsansicht zweier einander gegenüberliegenden Laufbahnen mit einer sich auf den Laufbahnen befindenden Schmierstoffraupe,

Figur 14

eine Querschnittsansicht der Laufbahnen mit durchlaufendem Wälzkörper und dabei erzeugten Schmierstoffverteilung,

Figur 15

eine perspektivische Ansicht einer weiteren Ausführungsform einer Möbelauszugsführung,

Figur 16

eine perspektivische Ansicht einer noch weiteren Ausführungsform der Auszugsführung,

Figur 17

eine perspektivische Einzelheit eines Endes der Möbelauszugsführung,

Figur 18

eine Querschnittsansicht der Möbelauszugsführung aus Figur 17 in einer in Figur 17 gezeigten Position des Käfigs,

Figur 19

eine perspektivische Ansicht der Möbelauszugsführung aus Figur 17 mit weiter zum Rand der Auszugsführung vorgeschobenem Käfig, und

Figur 20

eine Querschnittsansicht der in Figur 19 gezeigten Möbelauszugsführung bei einer in Figur 19 gezeigten Position des Käfigs.

The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings. Show it:

FIG. 1

a perspective view of a furniture drawer slide according to the invention,

FIG. 2

a side view of the furniture drawer guide FIG. 1 .

FIG. 3

a sectional view of the furniture drawer guide by a III in FIG. 2 designated cutting plane,

FIG. 4

a perspective view of a cage,

FIG. 5

a designated perspective V detail of in FIG. 4 shown cage,

FIG. 6

a perspective view of an embodiment of a cage with inserted rolling elements,

FIG. 7

a side view of the in FIG. 6 shown cage,

FIG. 8

a sectional view of the in FIG. 7 shown cage by a designated VIII section plane,

FIG. 9

a sectional view of the in FIG. 7 shown cage by a designated IX section plane,

FIG. 10

a top view of the in FIG. 7 shown cage on a front side of the cage,

FIG. 11

a perspective view of a furniture drawer guide according to the invention with partially cut cage,

FIG. 12

a perspective detail marked XII in FIG. 11 shown furniture drawer guide,

FIG. 13

a cross-sectional view of two opposing raceways with a located on the raceways lubricant bead,

FIG. 14

a cross-sectional view of the raceways with continuous rolling body and thereby generated lubricant distribution,

FIG. 15

a perspective view of another embodiment of a furniture pullout guide,

FIG. 16

a perspective view of yet another embodiment of the pullout guide,

FIG. 17

a perspective detail of one end of the furniture drawer guide,

FIG. 18

a cross-sectional view of the furniture drawer guide FIG. 17 in an in FIG. 17 shown position of the cage,

FIG. 19

a perspective view of the furniture drawer guide FIG. 17 with further advanced to the edge of the pullout guide cage, and

FIG. 20

a cross-sectional view of in FIG. 19 shown furniture drawer guide at a in FIG. 19 shown position of the cage.

A furniture drawer slide 1 comprises, as in FIG. 1 shown, a guide rail 2, which is mounted on a wall of a furniture body or a dishwasher or the like. At the first rail 2, a running rail 3 is held movable. In order to guide the running rail 3 on the first stationary rail 2, a cage 4 is provided, on which a plurality of rolling elements 5, preferably in the form of balls or cylinders, are guided. These rolling elements 5 are arranged in recesses 7 in the walls of the cage 4. The cage 4 preferably surrounds the guide rail 2 from three sides and is formed to one side with a gap 10 through which the suspension of the first rail 2 engages.

As in the FIGS. 7 and 9 Particularly well visible, open lubricant chambers 8 for receiving and storing a lubricant 12 are provided in the walls of the cage 4 to the inside and outside of the chamber walls. Through this open design of the lubricant chambers 8, an exchange of lubricant 12 between the rails 2 and 3 is facilitated.

The lubricant 12 is preferably a pasty lubricant such as a grease, which is suitable to slowly emerge from the lubricant chambers 8.

In a preferred embodiment, the lubricant chambers 8 are arranged along a line extending parallel to the longitudinal axis of the cage or of the travel path of the rail 3 between the recesses 7 arranged in the same line, in which the rolling elements 5 are arranged. In each of the lubricant chambers 8, as in the FIGS. 1 to 12 shown, a guide blade 6 with a transversely to the direction of movement X of the pullout guide 1 aligned and from the surface of the cage sides of at least one of the rails 2, 3 protruding scraping edge 9 is arranged. Preferably, the vanes 6 are formed such that they protrude to both rails 2, 3 out of the surface of the cage sides.

The scraper edges 9 of the vanes 6 are preferably formed trapezoidal. It is thus achieved that, during the process of the cage relative to the rails 2, 3, a lubricant bead is formed centrally on a track 13, 14 of the rails 2, 3. The lubricant not remaining on the track 13, 14 to form the lubricant bead is retained by the guide blade 6 and deposited in the lubricant chamber 8 in the direction of travel in front of the guide blade 6.

The lubricant bead is then overrun by one of the behind the guide vanes 6 arranged in the cage 4 rolling elements 5 and spread to a lubricant film 11, as in the FIGS. 11 and 12 is shown. This uniform crawler formation an optimal distribution of lubricant on the raceways 13, 14 of the rails 2, 3 is achieved.

As in FIG. 15 is shown, the cage 4 is formed in another preferred embodiment with a plurality of longitudinally in the longitudinal direction of the cage 17 column-shaped side by side parallel lubricant chambers 15. In this region of the parallel lubricant chambers 15, the cage has a smaller wall thickness than in the other areas of the cage 17, so that in a compression of the cage caused by a stop of the cage at an end stop 23 of the pullout guide 1, this is preferably in Deformed region of the lower wall thickness, while the lubricant 12, which has accumulated in the lubricant chambers 15, back to the raceways 13, 14 of the rails 2, 3 delivers.

According to a further preferred embodiment of the furniture drawer guide 1, the recesses 22, in which the rolling elements 5 are arranged, arranged parallel to each other on a plurality of extending in the longitudinal direction of the cage 19 tracks and the lubricant chambers 21 are on a parallel path arranged between these provided with the recesses 22 for the rolling elements 5 tracks. As a result, the lubricant 12 pushed aside by the roller bodies 5 can be picked up by the lubricant chambers 21 arranged there during the process of the cage 12 via the rails 2, 3.

Particularly preferably, one of the rails 2, 3, in the vicinity of a rail end at least one end stop 23, which is adapted to engage in at least one curved guide groove 20 at one end face of the cage 19. This will, as based on the FIGS. 17 to 20 can be seen, the cage in a stop at an end portion of the rail 2 by the interaction of the guide groove 20 with the end stop 23 by an angle α about the guide rail 2 around pivots. It is thereby achieved that, during this pivoting of the lubricant 12 deposited in the lubricant chambers 21 and laterally of the raceways 13, 14, the lubricant 12 is returned to the raceways 13, 14 of the rails 2, 3. At least one curved guide groove 20 and one of the rails 2, 3 are preferably formed on both end sides of the cage 19 with at least one end stop 23 in the vicinity of both rail ends.

In the method according to the invention for distributing the lubricant 12, the lubricant 12 is distributed by the rolling bodies 5 on the raceways 13, 14 of the rails 2, 3 during a relative movement of the first rails 2 to the second rail 3. This happens because the excess of the rolling elements 5 during a relative movement of the first rail 2 to the second rail 3 displaced, not forming a lubricating film 11 lubricant 12 accumulates in the lubricant chambers 8, 15, 21 and the following relative movements of the rails 2, 3rd , To each of these in the lubricant chambers 8, 15, 21 accumulated lubricant 12 is used to rebuild a lubricating film 11.

In this method, the lubricant displaced by the rolling elements 5 during a relative movement of the first rail 2 to the second rail 3, not forming a lubricating film 11, is preferably taken up by the guide vanes 6 and partially conveyed into a lubricant chamber 8, partly to form a lubricant bead on the or the raceways 13, 14 of the rails 2, 3 deposited.

The lubricant 12 conveyed into the lubricant chambers 8, 15, 21 is also distributed by the rolling bodies 5 to a new lubricating film 11 on the or the raceways 13, 14 of the rail 2, 3 during subsequent relative movements of the rails 2, 3.

LIST OF REFERENCE NUMBERS

1

Furniture pull-out guide

2

guide rail

3

runner

4

Cage

5

rolling elements

6

vane

7

recess

8th

lubricant chamber

9

stripping

10

gap

11

lubricant film

12

lubricant

13

career

14

career

15

chamber

16

lubricant caterpillar

17

Cage

18

recess

19

Cage

20

guide

21

lubricant chamber

22

recess

23

end stop

X

traversing

Claims (14)

Furniture drawer slide (1), comprising a) a guide rail (2) which can be fixed to a wall, b) a movable running rail (3), c) a plurality of rolling bodies (5), via which the running rail (3) is held on the guide rail (2), d) a cage (4, 17, 19) encompassing the guide rail (2) and having a plurality of recesses (7, 18, 22) in which the rolling elements (5) are arranged, characterized in that the cage (4, 17, 19 ) has a plurality of Schmierkankaanmern (8, 15, 21) for supporting a lubricant (12). Furniture drawer slide according to claim 1, characterized in that the lubricant chambers (8, 15, 21) in the longitudinal direction of the cage (4, 17, 19) between the recesses (7, 18, 22), in which the rolling bodies (5) are arranged, are arranged. Furniture drawer slide according to claim 1 or 2, characterized in that in the lubricant chambers (8) guide vanes (6) with a transversely to the travel direction (x) of the furniture drawer guide (1) aligned and from the surface of the cage (4) to at least one of the rails ( 2, 3) protruding scraper edge (9) are arranged. Furniture drawer slide according to claim 3, characterized in that the wiping edge (9) has a trapezoidal contour. Furniture drawer slide according to one of claims 3 or 4, characterized in that the guide vanes (6) to both rails (2, 3) out of the surface of the cage (4) protrude. Furniture drawer slide according to one of claims 1 to 5, characterized in that a plurality of longitudinally parallel to the longitudinal direction of the cage (4, 17, 19) in the longitudinal direction of the cage (4, 17, 19) column-shaped parallel lubricant chambers (15) are arranged. Furniture drawer slide according to claim 6, characterized in that the cage (4, 17, 19) in the region of the column-shaped parallel lubricant chambers (15) has a smaller wall thickness than in the other areas of the cage (4, 17, 19). Furniture drawer slide according to claim 1, characterized in that the recesses (22), in which the rolling elements (5) are arranged on a plurality of longitudinally of the cage (19) extending tracks are arranged parallel to each other and that the lubricant chambers (15) on a parallel extending web between the tracks with the recesses (22) are arranged. Furniture drawer slide according to one of claims 1 to 8, characterized in that one of the rails (2, 3) in the vicinity of a rail end has at least one end stop (23) which is suitable in at least one curved guide groove (20) on an end face of the cage (19). Furniture drawer slide according to claim 9, characterized in that both end faces of the cage (19) at least one curved guide groove (20) and one of the rails (2, 3) in the vicinity of both rail ends at least one end stop (23). Method for distributing a lubricant (12) on roller-mounted furniture slide guides (1) according to one or more of the preceding claims, wherein the lubricant (12) of the rolling elements (5) on the raceways (13, 14) of the rails (2, 3) during a relative movement of the guide rail (2) to the running rail (3) is distributed, characterized in that of the rolling elements (5) during a relative movement of the guide rail (2) to the running rail (3) displaced excess, not a lubricating film (11) forming lubricant (12) accumulates in the lubricant chambers (8, 15, 21) and in subsequent relative movements of the rails (2, 3) of the lubricant (12) accumulated in the lubricant chambers (8, 15, 21) serves to rebuild a lubricating film (11). Method according to claim 11, characterized in that the lubricant (12) displaced by the rolling elements (5) during a relative movement of the guide rail (2) to the running rail (3) is not absorbed by the guide vanes (6) and forms a lubricant film (11) a lubricant chambers (8) is conveyed. A method according to claim 11 or 12, characterized in that in a lubricant chamber (8) conveyed lubricant (12) from the rolling elements (5) during a relative movement of the guide rail (2) to the running rail (3) of the rolling elements (5) to a new lubricant film (11) on a track of one of the rails (2, 3) is distributed. A method according to claim 13, characterized in that in a lubricant chamber (8) conveyed lubricant (12) from the rolling elements (5) during a relative movement of the guide rail (2) to the running rail (3) of the rolling elements (5) to a new lubricant film (11) on the tracks of both rails (2, 3) is distributed.

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