EP2624725A1 - Guide télescopique - Google Patents

Guide télescopique

Info

Publication number
EP2624725A1
EP2624725A1 EP11767689.0A EP11767689A EP2624725A1 EP 2624725 A1 EP2624725 A1 EP 2624725A1 EP 11767689 A EP11767689 A EP 11767689A EP 2624725 A1 EP2624725 A1 EP 2624725A1
Authority
EP
European Patent Office
Prior art keywords
rolling
type
rolling elements
guide
pullout
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
EP11767689.0A
Other languages
German (de)
English (en)
Other versions
EP2624725B1 (fr
Inventor
Hubert KÖNIG
Martin Schock
Joachim Zimmermann
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.)
Schock Metallwerk GmbH
Original Assignee
Schock Metallwerk GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schock Metallwerk GmbH filed Critical Schock Metallwerk GmbH
Publication of EP2624725A1 publication Critical patent/EP2624725A1/fr
Application granted granted Critical
Publication of EP2624725B1 publication Critical patent/EP2624725B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47B88/49—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
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/437—Rollers for slides or guides

Definitions

  • the present invention relates to a pull-out guide comprising at least a first guide rail and a second guide rail displaceably guided by means of a rolling element arrangement on the first guide rail, wherein the rolling element arrangement comprises at least one ball cage with rolling elements.
  • Such pullout guides with rolling bearing guide rails in particular in the form of so-called C-profile ball pullout guides are used for example in the field of kitchen furniture.
  • the present invention has for its object to provide a pullout guide of the type mentioned, which has both a high load capacity and a low rolling noise and preferably a low rolling resistance.
  • the rolling element comprises at least two different types of rolling elements, wherein a rolling element of a first type a first material having a first hardness and a Wälzköper a second type a second Includes material having a second hardness,
  • the larger rolling elements of the first type in particular have a larger diameter (D) in a direction perpendicular to the rolling element raceways of the guide rails than the smaller rolling elements of the second type (diameter d).
  • the rolling noise of the pullout guide in the unloaded state and in normal operation of the pullout guide is determined by the softer rolling elements of the first kind, which have a lower rolling noise than the rolling elements of the second type, so that the pullout guide can be pulled out or inserted with little noise.
  • the rolling element of the second type has a diameter (d) which is at least 1% smaller than the diameter (D) of the rolling element of the first type (wherein the percentage deviation to the diameter D of the rolling element of the first kind is referred).
  • the softer rolling element of the first type may comprise, for example, a plastic material, preferably essentially completely formed of a plastic material.
  • the rolling element of the first type comprises a thermoplastic plastic material, for example polyamide.
  • the rolling element of the first type can essentially be formed completely from a thermoplastic plastic material, for example from polyamide.
  • the rolling element of the first type comprises glass fibers and / or glass beads in addition to the plastic material.
  • the rolling element of the first type comprises a metallic material that is softer than steel, which is usually used for the rolling elements of C-profile ball guides.
  • the rolling element of the first type may comprise aluminum, zinc and / or tin.
  • the rolling element of the first type may be substantially completely formed of aluminum, zinc and / or tin.
  • the rolling element of the second type preferably comprises a
  • Rolling element of the second type comprises a plastic material which is harder than the first material.
  • the rolling element of the second type may comprise a thermoplastic material containing glass fibers and / or glass spheres.
  • the rolling elements of the WälzConsequentlyan nieen are preferably formed substantially spherical.
  • rolling elements of the first type take over the main supporting function of the rolling element in normal operation of the pullout guide
  • those rolling elements of the rolling element which take in the pull-out direction, the first position or the last position of the rolling element, rolling elements of first kind are.
  • the arranged in these positions of the rolling element arrangement Rolling elements normally absorb the greatest load due to the leverage effect.
  • this rolling element of the second type would take over the primary support function even during normal operation of the drawer guide, so that then the noise of the drawer guide would be determined by the rolling elements of the second type.
  • each ball cage of the pullout guide has two or more, preferably four or more, rolling elements of the first type.
  • the number of rolling elements of the first kind in the rolling element is greater than the number of rolling elements of the second kind. It is particularly favorable if the number of rolling elements of the first type at least twice is large as the number of rolling elements of the second kind. Furthermore, it is favorable if at most two rolling bodies of the second type are adjacent to each other in the drawing-out direction.
  • At least the areas of the ball cage which come into contact with the rolling elements of the first type are formed of a material which is not harder than the first material in order to avoid damage to the rolling elements of the first type.
  • a further reduction of the noise in the movement of the pullout guide and a particularly smooth running of the pullout guide are achieved when the pullout guide is mounted without bias or slight bias.
  • the added diameters of a rolling element of the first kind rolling on the upper rolling-element raceways and a rolling element of the first type rolling on the lower rolling-element raceways are at most 0.04 mm larger as the distance of the upper rolling-element raceway and the lower rolling-element raceway of the first guide rail minus the distance between the upper rolling-element raceway and the lower rolling-element raceway of the second guide rail.
  • An assembly of the pullout guide without bias or with only slight bias is referred to in this specification as "easy assembly" of the pullout guide.
  • Ball cage of the pullout guide is provided with at least one stop element, which cooperates with a stopper on one of the guide rails so that the displacement of the ball cage is limited relative to the guide rail with the stopper.
  • the stop element may be formed integrally with the ball cage or be formed as a separate component.
  • Such a stopper system in which not the rolling elements are stopped by wedging on projections on the rolling element raceways, but instead the ball cage, in particular the cage back of the ball cage, is self-stopped, offers in particular the advantage that when re-pressing the pullout guide after the Stop no additional contact force must be overcome with which a stopped rolling element is keyed to the rolling element raceway.
  • At least one ball cage of the pullout guide is provided with two stop elements which cooperate with one associated stopper on one of the guide rails such that the displacement of the ball cage relative to the guide rail with the stoppers both in the extension direction and opposite to extraction direction is limited. As a result, an undesirable cage migration is corrected both when pulling and when inserting the pullout guide.
  • first guide rail and the guided by means of a Wälz redesignan inch displaceable on the first guide rail second guide rail extracting guide may comprise one or more further guide rails, which are guided on the first guide rail or on the second guide rail by means of further Wälzschreiban effeten.
  • these further Wälz analysesan fieen preferably also comprise two different types of rolling elements, wherein a rolling element of a first type comprises a first material having a first hardness and a rolling element of a second type comprises a second material having a second hardness, wherein the first hardness of the first material is smaller than the second hardness of the second material and wherein the rolling element of the first type is larger than the rolling element of the second type.
  • Figure 1 is a schematic perspective view of an extension guide, which comprises a first guide rail and a means of a rolling element on the first guide rail slidably guided second guide rail, wherein the rolling element comprises a ball cage with rolling elements of two different degrees of hardness.
  • Fig. 2 is a partial side view of the pullout guide
  • Fig. 1 viewed from an inside of the pullout guide
  • FIG 3 shows a schematic longitudinal section through the pullout guide of Figures 1 and 2 in the fully extended state, wherein the cutting plane extends through stop elements of the WälzMechkafigs and stopper elements on an outer rail of the pullout.
  • Fig. 4 is a schematic longitudinal section through the pullout guide
  • FIG. 5 shows a schematic longitudinal section corresponding to FIG. 3 through the pullout guide in the completely inserted state
  • FIG. 6 shows a schematic longitudinal section corresponding to FIG. 4 through the pullout guide in the completely inserted state
  • Fig. 7 is an enlarged view of the area I of Fig. 6;
  • a pullout guide indicated generally at 100 in FIGS. 1-9, includes a first guide rail 102 formed, for example, as an outer rail 104 and a second guide rail 106 formed, for example, as an inner rail 108, the first guide rail 102 and the second guide rail 106 are guided by means of a rolling body 110 so slidably together, that the second guide rail 106 in an extension direction 112 relative to the first guide rail 102 is extendable.
  • first guide rail 102 and the second guide rail 106 are formed as C-rails, which have a substantially C-shaped cross-section.
  • the first guide rail 102 has a (in the installed state of the pullout guide 100 vertically aligned) rail back 113, projecting from the second guide rail 106 towards an upper leg 114 and a lower leg 116.
  • An underside of the thigh 114 forms an upper roller raceway 118 of the first guide rail, and an upper surface of the lower leg 116 forms a lower roller raceway 120 of the first guide rail 102.
  • the second guide rail 106 has a (also in the installed state of the pullout guide 100 substantially vertically aligned) rail back 122, from which an upper leg 124 and a lower leg 126 protrude to the first guide rail 102 out.
  • An upper side of the upper leg 124 forms an upper rolling-element raceway 128 of the second guide rail 106, and a lower side of the lower one Leg 126 forms a lower rolling element raceway 130 of the second guide rail 106.
  • the rolling body assembly 110 by means of which the second guide rail 106 is displaceably guided on the first guide rail 102, comprises a ball cage 132 with a (in the installed state of the pullout guide 100 substantially vertically aligned) cage back 134 (see FIGS. 3 and 5), of the upper Edge an upper retaining strip 136 in the space between the upper rolling element raceway 118 of the first guide rail 102 and the upper rolling element raceway 128 of the second guide rail 106 projects and from the lower edge of a lower retaining strip 138 in the space between the lower rolling element raceway 120th the first guide rail 102 and the lower rolling-element raceway 130 of the second guide rail 106 projects.
  • each of the retaining strips 136 and 138 each have a plurality of the retaining strip 136 and 138 passing through receiving openings 140 for receiving a respective rolling element 142.
  • each retaining strip 136, 138 follow each other in the extension direction 112.
  • the upper rolling elements 142a and the lower rolling elements 142b are respectively divided into two rolling element groups, namely, a front rolling element group 144a and a rear rolling element group 144b, the rearmost rolling element 142 of the front rolling element group 144a coming from the foremost rolling element of the rear rolling element group 144b Distance L which is greater than the distance I between successive rolling elements 142 of the same rolling element group 144a or 144b (see FIG. 2).
  • the rolling elements 142 may in principle have any shape which is suitable for rolling on the one hand on a rolling body raceway 118 or 120 of the first guide rail 102 and on the other hand on a rolling body raceway 128 or 130 of the second guide rail 106.
  • the rolling elements 142 may be formed as substantially cylindrical rollers or, as provided in the illustrated embodiment, as balls.
  • the ball cage 132 comprises two different types of rolling elements that differ in shape and material.
  • the rolling elements of the first type are referred to below as 146 and take in the ball cage 132 preferably the - seen in the extension direction 112 - first position and the last position (these rolling elements of the first kind are designated in the figures with 146a).
  • rolling elements 146 of the first type preferably also occupy the second position and the penultimate position in the ball cage 132 (viewed in the extension direction 112) (these rolling elements of the first type are designated 146b in the figures).
  • Rolling elements of a second type which are referred to below as 148 and shown darker in the figures than the rolling elements 146 of the first type, preferably occupy further internal positions in the ball cage 132, for example the third position viewed in the pull-out direction 112 from the front and the third position from the back.
  • the rolling elements 148 of the second type thus each assume the middle position in the respective rolling body group 144a, 144b.
  • the remainder, even more internal rolling elements of the ball cage 132 are in the illustrated embodiment again rolling elements 146 of the first type, which are designated in the figures with 146c and 146d.
  • the rolling elements 146 of the first type are made of a first material having a first hardness and the rolling elements 148 of the second type are formed of a second material having a second hardness, wherein the first hardness of the first material is less than the second hardness of the second material.
  • the rolling elements 146 of the first type are formed from a plastic material, in particular from a thermoplastic plastic material, for example polyamide.
  • the material of the rolling elements 146 of the first type may further comprise, in addition to the plastic material, glass fibers.
  • the rolling elements 148 of the second type are preferably formed of a steel material which has a greater hardness than the plastic material of the rolling elements 146 of the first type.
  • the rolling elements 146 of the first type are formed of a metallic material that is softer than the material of the rolling elements 148 of the second type, ie in particular softer than a steel material.
  • the rolling elements 146 of the first type may be formed of aluminum, zinc and / or tin.
  • the rolling elements 146 of the first type are larger than the rolling elements 148 of the second type and in particular a diameter D. which is larger than the diameter d of the rolling elements 148 of the second type.
  • the diameter d of the rolling elements 148 of the second type is at least 1% smaller than the diameter D of the rolling elements 146 of the first type.
  • the rolling elements 146 of the first type take over the main supporting function and guiding function of the rolling element arrangement 110.
  • the rolling elements 146 of the first type are formed of a soft, sound-absorbing material, so that the rolling elements 146 of the first type have a lower rolling noise than the rolling elements 148 of the second type, so that the pullout guide 100 can be pulled out or inserted with only little noise ,
  • the soft rolling elements 146 of the first type alone could not absorb extreme loads due to their elastic deformation, for example, when the guide rails 102 and 106 strongly twist against each other.
  • damage or even destruction of the drawer guide 100 could occur.
  • an extreme load of the pullout guide 100 for example, when exposed to high sustained dynamic loads or temporary static loads (for example, when the guided by the pullout guide 100 extract, for example, a drawer, a longer time in the extended state dwells), which to one the carrying capacity lead the rolling elements 146 of the first kind excess load of WälzSystem entry, feather the rolling elements 146 of the first kind together, and the harder rolling elements 148 of the second type then take over the support function of the pullout guide 100th
  • the rolling elements 148 of the second type are formed of a hard material having a high load capacity and pressure resistance, so that they are suitable for taking on high payloads.
  • Such high payloads may be, for example, static overloads, for example, caused by prolonged residence of the extract in the extended state or by the exertion of compressive forces or torsional forces on the drawer guide 100 in the handling by the user when the user, for example, the means of the drawer guide 100 held extract supports.
  • the softer and larger rolling elements 146 of the first type take over the supporting function of the drawer guide 100 during normal operation thereof and ensure a low level of noise when pulling out or when inserting the drawer guide 100.
  • the harder and smaller rolling elements 148 of the second type take over loads that exceed the carrying capacity of the rolling elements 146 of the first type, thus ensuring the operability of the pullout guide 100 and prevent destruction of the rolling elements 146 of the first type in overload.
  • the rolling elements 148 of the second type are therefore preferably not used at the positions at the two ends of the ball cage 132, since in a rolling body guide in the extended state, built at the outer ends of the ball cage 132 rolling elements 142 take the largest load, because at these points due the leverage and the vertical mounting position of the pullout guide 100, the gap between the rolling element raceways 118 and 120 of the first guide rail 102 on the one hand and the rolling element raceways 128 and 130 of the second guide rail 106 on the other hand at a load-related rotation of the guide rail 102 and 106 is the smallest.
  • Rolling elements 146 of the first type take over the support function of the drawer guide 100 and thus determine the noise of the drawer slide 100 in these load cases, while the harder rolling elements 148 of the second type take their role as Absenkungsbegrenzung only at high loads and overloads.
  • a further reduction of the noise during the movement of the pullout guide 100 is achieved in that the pullout guide of the components of the first guide rail 102, second guide rail 106 and rolling elements 142 is mounted without bias or slight bias.
  • the added diameters (D) of a rolling element 146 of the first type rolling on the upper rolling-element raceways 118 and 128 and a rolling element 146 of the first type on the lower rolling-element raceways 120 and 130 rolls to more than 0.04 mm greater than the distance between the upper roller raceway 118 and the lower rolling element raceway 120 of the first guide rail 102 (distance S a ) minus the distance between the upper roller raceway 128 and the lower rolling-element raceway 130 of the second guide rail 106 (distance S, see Fig. 8).
  • the legs of the C-profile of the first guide rail 102 (outer rail 104) are bent apart in the elastic region and the legs of the
  • the pullout guide 100 shown in the drawings is preferably “easily mounted”, that is, mounted with only slight preload or bias.
  • a rolling element 146 of the first type (diameter D), which rolls on the upper rolling element raceways 118 and 128, and a rolling element 146 of the first type (diameter D), which at the lower Rolling element raceways 120 and 130 roll, smaller than, equal to, or at most 0.04 mm greater than the distance of the upper rolling element raceway 118 and the lower rolling element track 120 of the first guide rail 102 (distance S a ) minus the distance the upper rolling-element raceway 128 and the lower rolling-element raceway 130 of the second guide rail 106 (distance S,).
  • the rolling noise of the rolling elements 146 of the first kind in the profile of the first guide rail 102 and the second guide rail 106 is substantially reduced, since the noise in the movement of a rolling element with decreasing bias, under which the Components guide rails and rolling elements are mounted to each other, greatly decreasing.
  • the ball cage 132 of the illustrated pullout guide 100 is further provided with stop elements 150, which cooperate with stoppers 152 arranged on one of the guide rails 102, 106, in particular on the first guide rail 102 in that the displacement path of the ball cage 132 is relative to the respective guide rail, ie in particular relative to the first
  • each of the stop elements 150 is arranged at one of the two ends of the cage back 134 and projects from the cage back 134 to the rail back 113 of the first guide rail 102 toward.
  • the stop members 150 may also be formed integrally with the cage back 134.
  • the two stoppers 152 are arranged on the inner side of the rail back 113 of the first guide rail 102 facing the ball cage 132 and protrude from there to the inner rail 108.
  • the presence of the stop members 150 and the cooperating stopper 152 is particularly advantageous when the pullout guide 100 is mounted without bias or slight bias, since such "lightly mounted" drawer slides 100 are prone to so-called cage migration, especially under heavy load.
  • Cage walking is the effect that, when the guide rails 102 and 106 of the pullout guide 100 move relative to one another, the ball cage 132 does not travel exactly halfway around which the two guide rails 102 and 106 are displaced relative to each other, as would be the case. If the movement of the rolling elements 142 would be a pure rolling movement on the rolling element raceways without Gleitanteil.
  • the displacement of the position of the ball cage 132 relative to the guide rails 102 and 106 caused by the cage migration adds over the movement cycles of the pullout guide 100, and after a certain number of such motion cycles the pullout guide 100 can no longer be fully extended to the intended pullout path.
  • This cage migration can be corrected by vigorous pulling on one of the guide rails 102, 106 (so-called cage correction).
  • a cage correction with low correction force can be carried out by displacing the ball cage 132 by means of the stoppers 152 in the extension direction 112 or counter to the extension direction 112.

Landscapes

  • Bearings For Parts Moving Linearly (AREA)
  • Drawers Of Furniture (AREA)

Abstract

L'invention concerne un guide télescopique comportant au moins un premier rail de guidage et un deuxième rail de guidage guidé de manière coulissante sur le premier rail de guidage (106) au moyen d'un système de corps de roulement (110), le système de corps de roulement comportant au moins une cage (132) avec des corps de roulement (142). L'invention vise à fournir un guide télescopique qui présente tant une force portante qu'un faible bruit de roulement et de préférence une faible résistance au roulement. A cet effet, le système de corps de roulement comporte au moins deux types différents de corps de roulement, un corps de roulement (146) d'un premier type comportant un premier matériau ayant une première dureté et un corps de roulement (148) d'un deuxième type comportant un deuxième matériau ayant une deuxième dureté, la première dureté du premier matériau étant moindre que la deuxième dureté du deuxième matériau et le corps de roulement du premier type étant plus grand que le corps de roulement du deuxième type.
EP11767689.0A 2010-10-08 2011-10-07 Guide télescopique Active EP2624725B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010042180A DE102010042180A1 (de) 2010-10-08 2010-10-08 Auszugführung
PCT/EP2011/067534 WO2012045854A1 (fr) 2010-10-08 2011-10-07 Guide télescopique

Publications (2)

Publication Number Publication Date
EP2624725A1 true EP2624725A1 (fr) 2013-08-14
EP2624725B1 EP2624725B1 (fr) 2015-07-22

Family

ID=44785847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11767689.0A Active EP2624725B1 (fr) 2010-10-08 2011-10-07 Guide télescopique

Country Status (5)

Country Link
US (1) US20130193824A1 (fr)
EP (1) EP2624725B1 (fr)
CN (1) CN103153133B (fr)
DE (2) DE102010042180A1 (fr)
WO (1) WO2012045854A1 (fr)

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Also Published As

Publication number Publication date
US20130193824A1 (en) 2013-08-01
CN103153133B (zh) 2015-06-17
EP2624725B1 (fr) 2015-07-22
DE202011110509U1 (de) 2014-05-27
WO2012045854A1 (fr) 2012-04-12
DE102010042180A1 (de) 2012-04-12
CN103153133A (zh) 2013-06-12

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