US 11,986,101 B2
Lumbar support device for an item of seating furniture and seating furniture with a lumbar support device
Sascha Koltzenburg, Preussisch Oldendorf (DE); and Matthew Wafler, Tupelo, MS (US)
Assigned to Dewertokin Technology Group Co., Ltd, Jiaxing (CN)
Appl. No. 17/312,318
Filed by DEWERTOKIN TECHNOLOGY GROUP CO. LTD, Jiaxing (CN)
PCT Filed Dec. 6, 2019, PCT No. PCT/EP2019/084075
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/120336, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 20 2018 107 033.9 (DE), filed on Dec. 10, 2018.
Prior Publication US 2022/0022655 A1, Jan. 27, 2022
Int. Cl. A47C 7/46 (2006.01)
CPC A47C 7/462 (2013.01) 11 Claims
OG exemplary drawing
 
1. A lumbar support device for an item of seating furniture, said lumbar support device comprising:
an electromotive linear drive including a guide profile and two sliding blocks movable on the guide profile in synchronism towards one another and away from one another, each said sliding block including a spindle nut coupled by a spindle;
an extendable support element;
a lever mechanism configured to couple the electromotive linear drive to the extendable support element, said lever mechanism including levers connecting the sliding blocks to the support element, respectively, wherein the linear drive comprises a motor and gear unit operably connected to the spindle for driving the spindle and wherein the guide profile is attached to the motor and gear unit;
a fastening fork head on a motor side; and
a profile end cap that closes the guide profile at an end opposite the motor and gear unit; wherein the fastening fork head and the profile end cap are configured for pivoting installation of the lumbar support device in the item of seating furniture.