EP2165625A1 - Dispositif de guidage d'articulation - Google Patents

Dispositif de guidage d'articulation Download PDF

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Publication number
EP2165625A1
EP2165625A1 EP08016522A EP08016522A EP2165625A1 EP 2165625 A1 EP2165625 A1 EP 2165625A1 EP 08016522 A EP08016522 A EP 08016522A EP 08016522 A EP08016522 A EP 08016522A EP 2165625 A1 EP2165625 A1 EP 2165625A1
Authority
EP
European Patent Office
Prior art keywords
ball
foot
joint
socket
joint slider
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.)
Withdrawn
Application number
EP08016522A
Other languages
German (de)
English (en)
Inventor
Oskar Lehmann
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.)
Oskar Lehmann & Co KG GmbH
Original Assignee
Oskar Lehmann & Co KG 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 Oskar Lehmann & Co KG GmbH filed Critical Oskar Lehmann & Co KG GmbH
Priority to EP08016522A priority Critical patent/EP2165625A1/fr
Publication of EP2165625A1 publication Critical patent/EP2165625A1/fr
Withdrawn legal-status Critical Current

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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
    • A47B91/00—Feet for furniture in general
    • A47B91/08—Feet for furniture in general connected to the floor
    • A47B91/10—Feet for furniture in general connected to the floor adapted to mounting on inclined floor

Definitions

  • the invention relates to a method for the production of a joint slider for insertion into a tubular furniture leg or the like and the joint slider itself.
  • Tube-like furniture legs find many uses in furniture. In most cases, such furniture legs are closed by a plug clean to a floor, which also prevents damage to the floor. To compensate for unevenness of the floor, these plugs are often provided with a separately formed foot having an externally threaded shaft which is height adjustable in an internal thread of a bore of the plug by turning.
  • bumps in the vertical can be compensated so that, for example, a table top, a seat or the like can be set up horizontally.
  • a table top, a seat or the like can be set up horizontally.
  • Held is the ball within a cylinder-like rising over the joint socket, elastic holding portion which is provided on the inside edge side with a circumferential nose which engages over the equator of the ball. Due to the elastic properties of the holding portion, the ball can be easily pressed under expansion of this holding portion in the socket in which it is then held by spring-back of the holding portion by the annular circumferential nose.
  • the object of the invention is to provide an articulated slide which can be produced in a simple manner and by means of which a non-separable unit is formed.
  • the method according to claim 1 is based on the fact that in a first manufacturing step in a first manufacturing step at a first temperature integrally formed on the upper side frusto-conical foot with a ball disposed above the truncated cone top is sprayed and that in a second thermally insulated Section of the tool in a second manufacturing step at a second, lower temperature, the ball is encapsulated with a socket having a bottom provided with an opening hollow spherical socket for receiving the ball, wherein the diameter of the opening is dimensioned smaller than the diameter of the ball , and integrally formed with an outgoing shank for insertion into the furniture leg.
  • the method according to the invention has a number of advantages. Basically, without any assembly, in two successive injection processes, the joint slider according to the invention is produced in a tool. In particular, a manual completion of the joint slider is avoided by a mounting, which allows a cheap production of the same.
  • an upper side of a frusto-conical foot is integrally molded with a ball arranged above the truncated cone top. This is done, essentially as specified by the material to be sprayed, preferably a polyamide, PA, at a first temperature.
  • the ball is encapsulated in the same tool with a socket having a bottom side provided with an opening hollow ball-like socket for receiving the ball.
  • the injection process takes place at a second, lower temperature, which in turn is adapted to the material used, preferably a polypropylene, PP.
  • the temperature difference between the first and second temperatures should be at least 50 ° C.
  • the foot is formed on the upper side frusto-conical and that integrally via a frustoconical neck neck of the ball joint is connected to the foot.
  • the height of the neck, as well as the material thickness of the above-explained version, determine u.a. the possible swivel angle between foot and socket or shaft.
  • the frustoconical design of the foot also makes it possible, over a full circle about a vertical axis, a comparatively large pivoting of the foot relative to the socket, even if their outer dimensions and thus the material thickness is chosen comparatively large. This material thickness, as well as the choice of material, ensure that the opening of the ball socket does not expand elastically and the ball releases.
  • the foot is covered on the underside by a separately formed cap, which is preferably made of a metal, in particular a VA steel. Such a cap can be pressed onto the foot in the usual way or otherwise secured.
  • the foot has a recess on the underside for receiving an axially projecting floor slide.
  • the floor slider which preferably consists of a different, eg, textile material, preferably from a felt.
  • the receptacle has an undercut for grasping the floor glider, so that additional fastening measures, for example gluing, are not absolutely necessary.
  • the undercut is wedge-shaped at a wedge angle of 1 ° to 5 ° relative to a vertical. This is spraying technically cheaper than an undercut, for example by a peripheral edge of the recess circumferential groove or the like.
  • the holding effect by the undercut is further enhanced if it is provided that the recess has at its edge, or in angular cross-sections at their edges, on a central axis pointing toward noses, which hook in a bottom slider, which is inserted into this recess.
  • these noses can be formed sharp-edged to easily in a textile floor glides, for example. From a felt depress.
  • the maximum pivoting angle relative to a vertical axis of symmetry over a full circle about the axis of symmetry is 30 °, in particular 25 °.
  • the size of this pivoting angle is sufficient to ensure a secure support of the foot on a floor.
  • the foot and the shank are advantageously provided with a socket with a socket for receiving the ball made of different plastics.
  • POM polyoxymethylene
  • PA lubricious polyamide
  • PA lubricious polyamide
  • PP polypropylene
  • a hinge 1 of round cross-section Shown in the drawing is a first embodiment of a hinge 1 of round cross-section. Other cross sections, in particular square-rectangular cross-sections are also possible without any problem. Regardless of this, the joint slider 1 will be formed regularly symmetrical to a vertical axis of symmetry 2.
  • the articulated slider 1 shown by way of example has a foot 3, which is formed on the upper side in the manner of a truncated cone 4.
  • a neck 5 of round cross section is provided, which holds a ball 6 on the upper side of the truncated cone 4.
  • the foot 3 with truncated cone 4, neck 5 and ball 6 is injected integrally in a first manufacturing step, preferably from a PA, possibly from a POM.
  • the ball 6 of the foot 3 is then encapsulated with a socket 7 in a second manufacturing step, which has a hollow ball-like socket 9 provided with an opening 8 for receiving the ball 6 on the underside.
  • a second manufacturing step which has a hollow ball-like socket 9 provided with an opening 8 for receiving the ball 6 on the underside.
  • 7 different plastics are preferred for the production of the ball 6 and the foot 3 and the version, preferably PA or optionally a POM for the ball 6 and the foot 3 and a PP for the socket 9.
  • the first manufacturing step takes place at a first temperature in a first thermally insulated section of a tool and then in a second thermally insulated section of the tool, the second manufacturing step at a second, preferably at least 50 ° C lower temperature.
  • the diameter of the opening 8 is dimensioned smaller than the diameter of the ball 6. Moreover, since an elastic widening of the opening 8 due to the selected plastic of the socket 7 as well as by their material thickness is not possible form the foot 3 and the Version 7 is a structural unit that can not be separated non-destructively.
  • a shaft 11 Integral with the socket 7, a shaft 11 is formed, which is insertable into a tubular furniture leg and is hardly retractable due to ribs 12 after insertion.
  • This shaft 11 may, given by the geometry of a furniture leg, also have other cross sections.
  • the foot 3 has a continuous and smooth underside 13, which is well suited for most floors due to the good lubricity and abrasion resistance of the preferably used material, PA.
  • a joint slider 14 in particular for high quality parquet floors or the like intended, has the edge continuously rounded foot 15 on the underside of a recess 16 which serves to receive an axially bottom of the bottom 17 of the foot 15 above floor slider, which is not shown in the drawing.
  • This floor slider preferably made of a felt, is held by a wedge-shaped undercut 18 of the edge 19 of the recess 16, which is employed at a wedge angle ⁇ of 1 ° to 5 °, in this case 3 °, relative to a vertical.
  • the recess 16 also has at its edge 19 on the central axis of symmetry 20 indicative noses 21.
  • the lugs 21 intersect or engage with a felt bottom glider, in particular by a sharp-edged formation, whereby the lugs 21 terminate in a pyramid-like manner towards a floor in a point 22 and point with a sharp edge 23 onto the symmetry axis 20, compare the enlarged cooking position acc. FIG. 5 ,
  • a joint slider 24 acc. Fig. 7 is shown as the ball joint 25, determined in the embodiment, inter alia, by the thickness of the socket 26, the angle of the truncated cone 27 and the diameter of the ball 28 with a pivot angle ⁇ of, 25 °, optionally of up to 30 ° opposite the vertical axis of symmetry 29 allowed.
  • This inter alia due to the symmetrical design of this symmetry axis 29, over a full circle about the axis of symmetry 29th
  • the underside 30 of the foot 31 is formed over the entire surface and flat.
  • a cap 32 preferably made of a VA steel, covers the Bottom 30 in addition, so that abrasion practically does not occur.

Landscapes

  • Legs For Furniture In General (AREA)
EP08016522A 2008-09-19 2008-09-19 Dispositif de guidage d'articulation Withdrawn EP2165625A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08016522A EP2165625A1 (fr) 2008-09-19 2008-09-19 Dispositif de guidage d'articulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08016522A EP2165625A1 (fr) 2008-09-19 2008-09-19 Dispositif de guidage d'articulation

Publications (1)

Publication Number Publication Date
EP2165625A1 true EP2165625A1 (fr) 2010-03-24

Family

ID=40351959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08016522A Withdrawn EP2165625A1 (fr) 2008-09-19 2008-09-19 Dispositif de guidage d'articulation

Country Status (1)

Country Link
EP (1) EP2165625A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012152946A1 (fr) * 2011-05-12 2012-11-15 Vioga Gmbh Instrument de type piano-forte, notamment piano, comprenant une caisse posée sur des points d'appui
CN102940406A (zh) * 2012-10-10 2013-02-27 王兆利 一种多功能桌脚垫

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300280A1 (de) * 1982-01-21 1983-07-28 Josef 5000 Köln Lottner Gleitschutzkoerper fuer den stock einer gehhilfe
DE29504106U1 (de) 1995-03-09 1995-05-11 Kolb Alfred Ako Gelenkfuß
DE102007020836A1 (de) * 2007-05-02 2008-11-06 Oskar Lehmann Gmbh & Co. Kg Gelenkgleiter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300280A1 (de) * 1982-01-21 1983-07-28 Josef 5000 Köln Lottner Gleitschutzkoerper fuer den stock einer gehhilfe
DE29504106U1 (de) 1995-03-09 1995-05-11 Kolb Alfred Ako Gelenkfuß
DE102007020836A1 (de) * 2007-05-02 2008-11-06 Oskar Lehmann Gmbh & Co. Kg Gelenkgleiter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012152946A1 (fr) * 2011-05-12 2012-11-15 Vioga Gmbh Instrument de type piano-forte, notamment piano, comprenant une caisse posée sur des points d'appui
US9552798B2 (en) 2011-05-12 2017-01-24 Schimmel-Verwaltungsgesellschaft Mit Beschrankter Haftung Pianoforte instrument, in particular a piano, with a housing on bearing points
CN102940406A (zh) * 2012-10-10 2013-02-27 王兆利 一种多功能桌脚垫

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