EP1159888A1 - Höhenverstellbares Standbein - Google Patents

Höhenverstellbares Standbein Download PDF

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Publication number
EP1159888A1
EP1159888A1 EP00440163A EP00440163A EP1159888A1 EP 1159888 A1 EP1159888 A1 EP 1159888A1 EP 00440163 A EP00440163 A EP 00440163A EP 00440163 A EP00440163 A EP 00440163A EP 1159888 A1 EP1159888 A1 EP 1159888A1
Authority
EP
European Patent Office
Prior art keywords
barrel
tube
height
fork
furniture leg
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
EP00440163A
Other languages
English (en)
French (fr)
Other versions
EP1159888B1 (de
Inventor
Pascal Lerat
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.)
Steelcase SA
Original Assignee
Steelcase SA
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 Steelcase SA filed Critical Steelcase SA
Priority to ES00440163T priority Critical patent/ES2211489T3/es
Priority to DE60007726T priority patent/DE60007726T2/de
Priority to PT00440163T priority patent/PT1159888E/pt
Priority to AT00440163T priority patent/ATE257662T1/de
Priority to EP00440163A priority patent/EP1159888B1/de
Publication of EP1159888A1 publication Critical patent/EP1159888A1/de
Application granted granted Critical
Publication of EP1159888B1 publication Critical patent/EP1159888B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47B9/00—Tables with tops of variable height
    • A47B9/08—Tables with tops of variable height with clamps acting on vertical rods
    • 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
    • A47B17/00—Writing-tables
    • A47B17/02—Writing-tables with vertically-adjustable parts
    • 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
    • A47B9/00—Tables with tops of variable height
    • A47B9/20—Telescopic guides

Definitions

  • the present invention relates to a furniture leg at height adjustable especially intended to equip office furniture with trays forming work plans.
  • the possibility of a height adjustment provides additional comfort because such adjustment improves the adequacy between the user (s) and their workstation of work by allowing an adaptation either to the size of said users, either to the type of work carried out on the corresponding platforms.
  • the main purpose of the present invention is to provide a simple and robust adjustment system, than any fitter can be implemented without tools at the location of the installation furniture.
  • the system of the invention allows a continuous adjustment allowing a very fine adjustment to the specifics of the workstation or the morphology of the occupant of that post.
  • the furniture leg of the invention comprising essentially an external barrel in which a tube slides between two positions determining the amplitude of the height adjustment, is characterized in that that the tube is guided in the barrel by means of a share of at least two guide parts and on the other hand a movable locking / unlocking handle between two stable positrons, a lateral guide position in which the tube is slidable in the barrel, and a locking position in any relative tube / barrel positioning, said guide pieces and said lever being arranged on either side of the tube and exerting antagonistic actions for the blocking.
  • the guide position is actually a loose position in which the lever is no longer in contact with the tube. However, it is configured so to be close enough to said tube, so that during sliding, it constitutes a lateral guide member practically in the same way as the parts on the other side.
  • said guide parts are at number of two, arranged directly above each other, one being fixed to the base of the tube and the other being kept fixed in translation near the end top of the barrel.
  • the lower guide therefore performs rather external guidance, while the upper guide implements internal guidance.
  • said guide parts having an external surface of which at least a portion is provided to fit the inner wall of the barrel, at least a portion of their internal surface being designed to match the outer wall of the tube.
  • At least one of the lateral end surfaces of the pieces of speed guide parallel to the sliding axis, intended to come into contact respectively with the internal wall of the barrel and the external wall of the tube, and oriented substantially perpendicular to the direction of action of the forces of locking, have an angle of inclination relative to the vertical allowing the pivoting of said parts upwards by an equivalent angle when they are in contact with said walls.
  • This structural feature makes it possible to reduce, due to this pivoting, the distance between the external wall of the tube and the internal wall of the barrel, walls which are develop vertically.
  • tightening results in bending of the guide parts to bring them closer to the horizontal, increasing the distance above, and making friction blocking more effective.
  • this angle is understood between 1 ° and 3 °, and is preferably centered in this interval.
  • the guide parts have a portion in the form of fork inside the branches of which the sliding tube fits, the outside said branches fitting into the barrel.
  • the internal surface of the branches actually follows the external shape of a portion of the tube, while their outer surface matches part of the wall internal of the barrel. Depending on the case, it can be more or less complex, especially in its lateral zones housing the guide parts, which then have a shape adapted to this complexity, as we will see more in detail below.
  • the interior of the fork legs is provided in the vicinity of where they meet with an orifice which can accommodate a flexible pad.
  • This synthetic material shoe further improves the necessary friction effect blocking, as well as guidance when the tube is not blocked.
  • This same upper guide piece is supported by at least one support element fixed to the internal wall of the barrel, and it is held in part upper by a cover forming the upper end of said barrel, and comprising an opening for the passage of the sliding tube.
  • this guide piece is not directly attached to the barrel, it is therefore maintained in vertical translation by the above-mentioned elements, and it is immobilized in a horizontal direction between the tube and the barrel.
  • each branch of the fork comprising for this purpose a housing provided for receive a relief protruding from the outer wall of the tube, the two branches of the fork deforming during the passage of their end over said reliefs, until the latter arrive in front of said accommodation and stay there, the branches then resiliently returning to their initial position in contact with the tube.
  • said guide parts are identical, whether fixed at the bottom or held in the upper part, between the tube and the barrel.
  • This includes a manipulation lever and a fork cooperating with a lateral end of the tube, said handle being able to pivot relative to said between two positions, a first position in which the fork guides the tube in its sliding movement relative to the barrel and a second locking position in tight contact against the tube.
  • the internal wall of the fork has a rounded surface such that in any pivoting position of the lever, it has in a plane perpendicular to the sliding axis a curve adjusting substantially to the external profile of the tube, and the distance from which varies in depending on the pivoting position.
  • the internal surface of the fork acts as a cam tightening / loosening, exerting when in contact with the barrel a radial action in opposite direction of the reaction exerted by the aforementioned guide parts.
  • the forks of the latter are oriented in opposite direction to the fork of the lever, the assembly constituting clamping jaws frictionally locking the tube in the barrel at a given position.
  • the lever pivots in an opening of the barrel allowing the passage of the handling lever, this being arranged outside the barrel while the fork is inside, the pivot axis being constituted by rounded edges disposed on said fork near the internal surface of lever / fork connection, on both sides of the lever, said edges rolling on the internal wall of the barrel on either side of the opening.
  • This lever is therefore not connected to the barrel by a mechanical connection permanent, but on the contrary is removable and installable - in the absence of tube - without any tools, immediately.
  • the handling lever and the fork are arranged substantially perpendicular to each other, the fork being in close contact with the barrel when the lever is parallel to the wall of said barrel, and in the guide position without contact when the lever is perpendicular to the barrel.
  • This structure is advantageous because it allows the lever to be pressed against the was in the usual operating position, or even hiding it when it is placed in an axial channel or groove made in the external wall of said barrel.
  • the internal wall of this barrel has at least one stop upper for the guide piece fixed to the base of the tube.
  • This stop marks the upper limit of elevation of the system, the limit lower being of course produced by the contacting of the barrel of the elements supported by the tube (for example a sole supporting a tray).
  • each upper stop is associated with an element of support of the guide piece located near the upper end of the barrel to form a single piece attached to the inner wall of the barrel.
  • It can be one or more plates fixed axially to the internal wall of the barrel, and which fulfill another function which does not participate in the present invention, and is therefore not explained in detail.
  • the tube sliding in the barrel is provided with graduations allowing measure its position relative to the barrel. It is therefore possible to standardize the adjustment from one tube to another, uniformity necessary to obtain horizontality correct for example for the desk top.
  • the furniture leg shown comprises essentially a barrel (1) surmounting a base (2), and a tube (3) sliding in the barrel (1) and supporting a sole (4) connecting to an upper element, by example a tray (not shown).
  • the barrel is shown in broken lines, with the exception of a wall (5) which plays an essential part in the the invention. This representation also symbolizes the transparency that is artificially conferred, allowing the visualization of the components of the invention.
  • the base (2) is mounted on adjustment cylinders (6), allowing in particular adaptation to uneven soils.
  • the upper sole (4) is mounted on an upper portion (7) of barrel, the base of which is closed by a cover (8), which comes into contact with the cover (9) obstructing the upper part of the barrel (1), marking the position in which the tube (3) is in bottom stop.
  • the tube (3) cooperates, inside barrel (1), with two guide pieces (10,11) and a handle (12), which is shown in the locked position.
  • the foot is therefore blocked in the configuration as shown.
  • the guide piece (10) is fixed in the vicinity of the lower end of the tube (3), using two screws (13) located symmetrically with respect to said tube (3) and therefore only the head of one appears.
  • This screw (13) is actually screwed directly in the tube and allows clipping of the lower guide piece (10) by inserting the screw head (13) into the holes (14), as will be explained in more detail below, with reference to the shape of this part (10).
  • the guide piece (11) located near the upper end of the barrel (1) is not fixed to the tube (3), or even directly to the barrel (1). She is actually held between the cover (9) and at least one support element (15) fixed to the wall internal of the barrel (1) in this case by two bolts (16, 16 ').
  • the locking / unlocking handle (12) comprises a manipulation lever (18), as well as a fork (19) whose branches grip the tube (3) and whose internal surface achieves either blocking by clamping the tube (3) between the pieces of guide (10, 11) and the lever (12), i.e. the guide when there is no contact between the fork (19) and said tube (3).
  • the barrel (1) consists of a cut sheet and folded, even stamped, which creates an internal volume of particular shape, the envelope is produced by said thin sheet. This sheet closes on itself, enclosing said volume, at the level of the wall (5) set back relative to the actual end, so that a side channel (21) is created which can be closed by a cover (22) clipped at this level (see Figure 4).
  • an opening (23) allows the passage of the lever (12) appearing in FIGS. 5 to 7.
  • Said lever (12) is not attached to the barrel (1). It is inserted from the inside, so that the lever (18) passes outside said wall (5) via the opening (23), which is however too small to allow passage of the fork (19).
  • the part handle (18) of the handle (12) is accessible from outside the barrel (1) then that the "active" part, that is to say the fork (19) is retained inside the barrel (1) between the wall (5) and the tube (3).
  • the handle (12) In the position shown in Figures 5 to 7, the handle (12) is generally vertical, that is to say in the clamping position. In this case, the distance between the rounded portions (29, 29 ') and the curve (28) located approximately in the same horizontal plane is maximum, where the contact with the tube (3) and the blocking.
  • the fork (19) of the lever (12) exerts, in the locked position, an action on the lateral end of the tube (3), the external shape of which is intended to fit between the branches (25, 26), in contact with at least one curve (28) of the left surface (24).
  • the guides (10, 11) have an internal surface (30), designed to accommodate said end in order to exert a reaction thereon antagonist during blocking.
  • These guide pieces (10, 11) have also a general shape (see figures 8 to 10) in the form of a fork with two arms (31, 32) and an axial portion (33) which adjusts in the lateral end cylindrical in shape of the barrel (1), as it appears for example in Figures 3 and 4.
  • This axial portion (33) is split at (34) so as to increase the flexibility branches (31, 32), in particular for fixing purposes (see below).
  • the branches (31, 32) and said portion (33) have upper edges and lower (35, 36) continuous which adjust in the volume delimited by the internal wall of the rounded lateral portion of the barrel (1).
  • a cylindrical housing (37) equips the internal wall (30) of the pieces of guide (10, 11), for housing a cylindrical shoe of flexible plastic material improving friction blocking when tightening (not shown).
  • Each branch (31, 32) further comprises an elongated orifice (14, 14 ') which can accommodate a protrusion (for example a screw head (13) as in Figures 1 and 2) fixed to the tube (3).
  • the fixing is then carried out as follows: the screw heads (13) being fixed to the tube (3), it suffices to engage the guide piece to be fixed from the lateral end of the tube (3) until said heads (13), bearing on the inclined planes (40, 41), separate the branches (31, 32) from one another.
  • the heads (13) are then housed in the holes (14, 14 ') when continuing inserting the guide piece, making the clipping.
  • Figure 8 shows in transparency the shape of the tube (3) as inserted in the guide parts (10, 11). As previously mentioned, only the part (10) is fixed to said tube (3).
  • all walls or virtual vertical walls oriented transversely to the room guidance are not parallel: an angle ⁇ , preferably chosen at around 2 ° was provided between the end walls (42) and the wall (30) at in the vicinity of the orifice (37) on the one hand, and the other vertical walls or sides and of the same global orientation, on the other hand.
  • the surfaces or walls concerned are those which have a role in the exercise of actions at the time of blocking: this are of which those which are generally perpendicular to the resultant of the forces exercised during blocking.
  • the force exerted by the lever (12) is passed through the tube (3) to the guide parts (10, 11), so that said pivoting of ⁇ upwards is countered, and said parts (10, 11) tend to return to a more horizontal position, increasing the aforementioned tube distance (3) / barrel (1) and accentuating their mutual actions: the blockage is then total.

Landscapes

  • Legs For Furniture In General (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP00440163A 2000-05-29 2000-05-29 Höhenverstellbares Standbein Expired - Lifetime EP1159888B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES00440163T ES2211489T3 (es) 2000-05-29 2000-05-29 Pie para mobiliario regulable en altura.
DE60007726T DE60007726T2 (de) 2000-05-29 2000-05-29 Höhenverstellbares Standbein
PT00440163T PT1159888E (pt) 2000-05-29 2000-05-29 Suporte de mobiliario com altura regulavel
AT00440163T ATE257662T1 (de) 2000-05-29 2000-05-29 Höhenverstellbares standbein
EP00440163A EP1159888B1 (de) 2000-05-29 2000-05-29 Höhenverstellbares Standbein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00440163A EP1159888B1 (de) 2000-05-29 2000-05-29 Höhenverstellbares Standbein

Publications (2)

Publication Number Publication Date
EP1159888A1 true EP1159888A1 (de) 2001-12-05
EP1159888B1 EP1159888B1 (de) 2004-01-14

Family

ID=8174130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00440163A Expired - Lifetime EP1159888B1 (de) 2000-05-29 2000-05-29 Höhenverstellbares Standbein

Country Status (5)

Country Link
EP (1) EP1159888B1 (de)
AT (1) ATE257662T1 (de)
DE (1) DE60007726T2 (de)
ES (1) ES2211489T3 (de)
PT (1) PT1159888E (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888478A (en) * 1931-05-18 1932-11-22 Steidl Joseph Combination table
FR1374258A (fr) * 1963-05-31 1964-10-02 Emue Tische Emil Muessig Spezi Procédé d'obtention d'un guidage sans jeu pour tables à hauteur réglable
CH398917A (de) * 1962-05-15 1966-03-15 Krause Kg Robert Höhenverstellbarer Säulentisch
US4492170A (en) * 1982-07-20 1985-01-08 Am Fab, Inc. Locking mechanism for vertically adjustable table

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888478A (en) * 1931-05-18 1932-11-22 Steidl Joseph Combination table
CH398917A (de) * 1962-05-15 1966-03-15 Krause Kg Robert Höhenverstellbarer Säulentisch
FR1374258A (fr) * 1963-05-31 1964-10-02 Emue Tische Emil Muessig Spezi Procédé d'obtention d'un guidage sans jeu pour tables à hauteur réglable
US4492170A (en) * 1982-07-20 1985-01-08 Am Fab, Inc. Locking mechanism for vertically adjustable table

Also Published As

Publication number Publication date
ATE257662T1 (de) 2004-01-15
DE60007726T2 (de) 2004-10-14
ES2211489T3 (es) 2004-07-16
EP1159888B1 (de) 2004-01-14
DE60007726D1 (de) 2004-02-19
PT1159888E (pt) 2004-05-31

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