Seating furniture structure and item of seating furniture

• US 9,192,239 B2
• Filed: 05/02/2014
• Issued: 11/24/2015
• Est. Priority Date: 05/08/2013
• Status: Active Grant

• Current Assignee: Kintec-Solution GmbH (Leggett & Platt Incorporated)
• Original Assignee: Kintec-Solution GmbH (Leggett & Platt Incorporated)
• Inventors: Besler, Boris, Hortig, Andreas
• Primary Examiner(s): BROWN, PETER R
• Application Number:
  US14/268,040
• Publication Number:
  US 20140333111A1
• Time in Patent Office: 571 Days
• Field of Search: 297/423.28, 297/423.3, 297/423.36
• US Class Current: 1/1
• CPC Class Codes: A47C 1/035 in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
• CPC Class Codes: A47C 1/0355 actuated by linkages, e.g. lazy-tongs mechanisms
• CPC Class Codes: A47C 7/506 of adjustable type

Abstract

A seating furniture structure having a carrier unit and a seat part arrangement movably mounted relative to the carrier unit, and a leg rest arrangement with a guiding part and a support carriage displaceable relative to the guiding part by mechanical tension cord control system. The tension cord control system has a forced coupling to a pivot mechanism of the guiding part such that the support carriage is displaceable between different end positions relative to the guiding part in response to a pivot position of the guiding part.

The tension cord control system includes adjacent deflection elements, wherein a tension cord of the tension cord control system is guided alternatingly deflected in opposite directions over the deflection elements, and a deflection element is dislocatably retained and is in operative connection to the pivot mechanism of the guiding part by a forced coupling unit.

Claims

1. A seating furniture structure comprising a carrier unit, a seat part arrangement movably mounted relative to the carrier unit, and a leg rest arrangement, the leg rest arrangement comprising a guiding part pivotably mounted relative to the carrier unit and/or to the seat part arrangement for rotation around a transverse axis of the seat part arrangement, the leg rest arrangement further comprising a support carriage displaceable relative to the guiding part by at least one mechanical tension cord control system, wherein the tension cord control system is operatively coupled to a pivot mechanism of the guiding part in such a manner that the support carriage is forced between different end positions relative to the guiding part in response to a pivot position of the guiding part,

wherein

the tension cord control system includes a plurality of adjacent deflection elements, wherein a tension cord of the tension cord control system is guided and deflected in alternative opposite directions over adjacent ones of the deflection elements, and at least one of the deflection elements is dislocatably retained and is operatively connected to the pivot mechanism of the guiding part by a forced coupling unit.

2. The seating furniture structure according to claim 1, wherein the tension cord is fixed with one end section on the carrier unit and with an opposite end section on the support carriage.

3. The seating furniture structure according to claim 1, wherein the tension cord control system is arranged adjacent to the pivot mechanism of the guiding part in a front section of the carrier unit facing the guiding part.

4. The seating furniture structure according to claim 1, wherein the at least one of the deflection elements includes two adjacent deflection elements dislocatably retained and operatively connected to the pivot mechanism, the two adjacent deflection elements being arranged on opposite legs of a rocker pivotably mounted around a central rocker axis.

5. The seating furniture structure according to claim 4, wherein the plurality of adjacent deflection elements comprises a stationary deflection element arranged on the carrier unit.

6. The seating furniture structure according to claim 5, wherein the plurality of adjacent deflection elements comprises a deflection element adjacent to the support carriage and mounted on a pivot lever, the pivot lever being operatively connected to the pivot mechanism of the guiding part.

7. The seating furniture structure according to claim 6, wherein the tension cord is guided starting from a first end section thereof that is fixed to the carrier unit alternatingly deflected in opposite directions over the two adjacent deflection elements of the rocker, over the stationary deflection element and finally over the deflection element mounted on the pivot lever, and ends in a second end section fixed on the support carriage.

8. The seating furniture structure according to claim 7, wherein the forced coupling unit provides forced coupling of the tension cord control system to the pivot mechanism of the guiding part, in order to couple the pivot lever, bearing the deflection element adjacent to the support carriage, to the rocker in such a manner that the support carriage, with a downwards projecting pivot position of the guiding part relative to a ground, assumes a rear side end position displaced relative to the seat part arrangement.

9. The seating furniture structure according to claim 8, wherein the forced coupling unit comprises a control arm engaging the pivot lever and a double lever mounted on the carrier unit, wherein the control arm engages the double lever.

10. The seating furniture structure according to claim 9, wherein the double lever is coupled to the rocker of the tension cord control system by a transfer lever.

11. An item of seating furniture including a seating furniture structure according to claim 1.