Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/36—Support for the head or the back
  • A47C7/40—Support for the head or the back for the back
  • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
  • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
  • A47C7/465—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means by pulling an elastic cable

Definitions

• the invention relates to a chair, in particular an office chair, with a hinged to a support via a backrest backrest with an adjustable lumbar support and a seat, which is attached to the carrier.
• the invention has for its object to provide a chair that offers a particularly comfortable automatic adjustment.
• the chair of the invention provides a coupling of the inclination position of the backrest and the adjustment of the lumbar support via a coupling element such that a rearward tilting movement of the backrest causes a change in the adjustment of the lumbar support, in particular a relaxation of the lumbar support and a forward tilting movement of the backrest also one Change in the adjustment of the lumbar support, in particular causes a tension of the lumbar support.
• a lumbar support is provided, which tensions or relaxes depending on the inclination position of the backrest and thus enables an optimized shaping of the backrest.
• the lumbar support integrated in the backrest is automatically adjusted so that, in particular when the user leans back, the lumbar support is relaxed and thus an ergonomically advantageous support in the user's lumbar area.
• an ergonomically desired and health-advantageous adjustment of the lumbar support is thus automatically achieved without user intervention, depending on the choice of the inclination position of the backrest by the user.
• the coupling element is designed as a cable (Bowden cable).
• the coupling element In a change in the inclination position of the backrest relative to the seat, the coupling element is tense or relaxed.
• the cable which is attached with its one end to the lumbar support, and with its other end to or in the area of the seat of the chair, relaxed at a tilt of the back to the rear, so that by easing the tension on the cable lumbar support of the strained (ie more or less curved) position in a relaxed (ie slightly curved or completely flat) position is transferred.
• the coupling element is integrated into the backrest support of the backrest, so that a transmitted from the region of the seat surface actuation of the coupling element is transferred by the running in the backrest support member of the backrest Lumbar support integrated into the backrest.
• the backrest support of the backrest also has an integrated adjustment for height adjustment of the backrest relative to the backrest support.
• FIG. 2 is a side view B of the chair assembly of Fig. 1,
• FIG. 3 is a view C from above of Fig. 1, - A -
• Fig. 4 is a front view of the chair structure of Fig. 1 and
• FIG. 5 shows a section A-A of Fig. 4th
• Fig. 1 shows the chair structure of a chair 1 (without per se known additional parts such as armrests, pivot column, pedestal, etc.) with a support 33 and a hinged to a backrest 2 backrest 3 with a built-in backrest 3 lumbar support 4 and one in the area 5 can be attached to the carrier 33 seat surface 12 (see Fig. 5).
• the Lumbai total 4 consists of individual support areas 6, 7, 8 and 9, which are actuated by a coupling element 10, in particular a cable 11, to the effect that when voltage of the lumbar support 4, the individual support areas 6, 7, 8 and 9 arched to each other and at Relaxation, the individual support areas are arranged substantially flat and relaxed to each other.
• the lumbar support 4 is attached to the backrest 3 at a lower edge region, for example at the support region 9, wherein by applying voltage through the coupling element 10 of the top support area 6 relative to the lower support areas 7, 8 and 9 is used, so that the distances between 14 the supporting areas 6, 7, 8 and 9 are reduced when the lumbar support 4 is tensioned.
• the cable 1 1 is integrated into the backrest support 2 and held in a recess 15. Through the recess 15 (see Fig. 5), the cable 1 1 is guided in the region below the seat surface 12, which is indicated schematically in Fig. 5 by a line.
• the cable 1 1 has a first (not visible) end portion which is connected to the support portion 6 and a further end portion 13 which is connected directly or indirectly with the seat surface 12.
• the further end region 13 is articulated on a holder 14 of the seat surface 12.
• the chair according to FIG. 1 alternatively or additionally has a lateral adjusting element 20, which is designed to be self-locking and wherein a separate (additional) adjustment of the lumbar support 4 can be made by a separate cable pull 21.
• the adjusting element 21 has a lever 22 which is displaceable in the direction 23 and depending on the setting position the cable 21 is operated such that the lumbar support 4 is more or less tense (curved or not curved) is formed.
• the chair 1 has an adjusting element 24 integrated in the backrest support 2, which allows a height adjustment of the backrest 3 relative to the backrest support 2.
• the adjusting element 24 has in particular a horizontal bar 25, which enables locking of the height position of the backrest 3 on the backrest support 2 by latching.
• lever 26 and / or 27 can be done by moving the lever 26 and 27 in the direction 28, a displacement of the horizontal bar 25 by displacement of the recess 29 in the direction 30 for the respective user (left or right-handed), whereby the spring 31 is tensioned ,
• the chair 1 of the invention thus has a backrest support 2, in which in a particular embodiment, both an integrated recess 15 for receiving a coupling element 10, in particular a cable 1 1, is provided and also an integrated recording of an adjusting element 24 for height adjustment of the backrest 3 relative to the Backrest 2 is made possible.
• the cable 12 is initially guided parallel to the longitudinal extent of the backrest support 2 (see Fig. 1) and then in an arc 32 back down to the support areas 9 - 6 with different height settings of the backrest 3 on the backrest support 2 sufficient length guided.
• a coupling element 10 (in particular pull-wire 1 1) connected to the seat surface 12 is thus provided, which is realized simultaneously with a height adjustment of the backrest 3 integrated in the backrest 13 (by the adjusting element 24).
• a coupling element 10 (in particular pull-wire 1 1) connected to the seat surface 12 is thus provided, which is realized simultaneously with a height adjustment of the backrest 3 integrated in the backrest 13 (by the adjusting element 24).
• the lumbar support 4 is realized with a height adjustment of the backrest 3.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chair Legs, Seat Parts, And Backrests (AREA)
• Chairs Characterized By Structure (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (1)

Family

ID=38523472

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (7)

Citations (3)

Family Cites Families (8)

• 2006
  • 2006-06-26 DE DE102006029537A patent/DE102006029537A1/de not_active Withdrawn
  • 2006-10-23 DE DE502006005787T patent/DE502006005787D1/de active Active
  • 2006-10-23 PL PL06022177T patent/PL1872689T3/pl unknown
  • 2006-10-23 EP EP06022177A patent/EP1872689B1/de not_active Not-in-force
  • 2006-10-23 DK DK06022177.7T patent/DK1872689T3/da active
  • 2006-10-23 AT AT06022177T patent/ATE453344T1/de active
• 2007
  • 2007-06-25 CN CNA2007800242032A patent/CN101478896A/zh active Pending
  • 2007-06-25 US US12/308,829 patent/US20090184553A1/en not_active Abandoned
  • 2007-06-25 WO PCT/DE2007/075006 patent/WO2008019684A1/de active Application Filing

Patent Citations (3)

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