EP2992782A1 - Guidage d'extraction - Google Patents

Guidage d'extraction Download PDF

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Publication number
EP2992782A1
EP2992782A1 EP15182660.9A EP15182660A EP2992782A1 EP 2992782 A1 EP2992782 A1 EP 2992782A1 EP 15182660 A EP15182660 A EP 15182660A EP 2992782 A1 EP2992782 A1 EP 2992782A1
Authority
EP
European Patent Office
Prior art keywords
rails
balls
diameter
rail
rolling elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15182660.9A
Other languages
German (de)
English (en)
Other versions
EP2992782B1 (fr
Inventor
Gerold Meurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apparatebau Gronbach Srl
Appbau Gronbach Srl
Original Assignee
Apparatebau Gronbach Srl
Appbau Gronbach Srl
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Publication date
Application filed by Apparatebau Gronbach Srl, Appbau Gronbach Srl filed Critical Apparatebau Gronbach Srl
Publication of EP2992782A1 publication Critical patent/EP2992782A1/fr
Application granted granted Critical
Publication of EP2992782B1 publication Critical patent/EP2992782B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/483—Sliding drawers; Slides or guides therefor with single extensible guides or parts
    • A47B88/487—Sliding drawers; Slides or guides therefor with single extensible guides or parts with rollers, ball bearings, wheels, or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0029—Guide bearing means
    • A47B2210/0032—Balls

Definitions

  • 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.
  • a pull-out part can be, for example, a drawer or a storage level.
  • 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.
  • pullout guides 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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".
  • 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.
  • 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.
  • a pull-out guide 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 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 WälzMechlafige.
  • 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.
  • 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.
  • 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.
  • 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.
  • an embodiment 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 ,
  • 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.
  • diameter of the balls are common, which are in the range of 3 to 5 mm.
  • the above-mentioned diameter increase would be a percentage value of 1.2% to 2.5 % to the said diameter of 4 mm.
  • 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.
  • 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.
  • the rows of balls, each arranged between the two rails of each pair of pairs of adjacent rails, are arranged in Y-arrangement.
  • the at least one larger diameter ball is arranged in the middle ball row.
  • 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.
  • 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
  • FIG. 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.
  • FIGs 1 and 2 are the household electrical appliance or furniture not drawn.
  • 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.
  • the cages are not drawn.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a cover may be provided which may be formed by a bent sheet metal tab (not shown in the drawing).
  • a baking sheet or the like can be placed on the running rail 2, a baking sheet or the like can be placed.
  • 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.
  • FIGS. 3 and 4 show 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.
  • the enlargement of the diameter of the at least one ball 4 has been somewhat exaggerated.
  • 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.
  • the at least one ball with the larger diameter is expediently arranged in the middle row of balls 6.
  • 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.
  • 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.
  • the furniture or household electrical appliance not drawn.
  • 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.
  • 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.
  • 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.
  • a diameter can be understood, the percentage of the diameter of the remaining balls 5 by 1.2% to 2.5% larger.
  • 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

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  • Bearings For Parts Moving Linearly (AREA)
  • Drawers Of Furniture (AREA)
EP15182660.9A 2014-09-03 2015-08-27 Guidage d'extraction Active EP2992782B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBZ20140033 2014-09-03

Publications (2)

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EP2992782A1 true EP2992782A1 (fr) 2016-03-09
EP2992782B1 EP2992782B1 (fr) 2019-05-08

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ID=51846778

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EP15182660.9A Active EP2992782B1 (fr) 2014-09-03 2015-08-27 Guidage d'extraction

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11525583B2 (en) * 2017-04-12 2022-12-13 Accuride International Gmbh Telescopic rail
US11547211B2 (en) * 2018-11-13 2023-01-10 Julius Blum Gmbh Arrangement for guiding at least one movable furniture part

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488097A (en) 1968-07-26 1970-01-06 Herbert S Fall Heavy-duty drawer slide
AT8732U1 (de) 2005-12-06 2006-12-15 Blum Gmbh Julius Ausziehführungssystem für schubladen
DE102010042180A1 (de) 2010-10-08 2012-04-12 Schock Metallwerk Gmbh Auszugführung
WO2014016141A1 (fr) 2012-07-25 2014-01-30 Paul Hettich Gmbh & Co. Kg Guidage télescopique destiné à des parties de meuble mobiles les unes par rapport aux autres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488097A (en) 1968-07-26 1970-01-06 Herbert S Fall Heavy-duty drawer slide
AT8732U1 (de) 2005-12-06 2006-12-15 Blum Gmbh Julius Ausziehführungssystem für schubladen
DE102010042180A1 (de) 2010-10-08 2012-04-12 Schock Metallwerk Gmbh Auszugführung
WO2014016141A1 (fr) 2012-07-25 2014-01-30 Paul Hettich Gmbh & Co. Kg Guidage télescopique destiné à des parties de meuble mobiles les unes par rapport aux autres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11525583B2 (en) * 2017-04-12 2022-12-13 Accuride International Gmbh Telescopic rail
US11547211B2 (en) * 2018-11-13 2023-01-10 Julius Blum Gmbh Arrangement for guiding at least one movable furniture part

Also Published As

Publication number Publication date
EP2992782B1 (fr) 2019-05-08

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