公开(公告)号：US20140077549A1

公开(公告)日：2014-03-20

申请号：US14029167

申请日：2013-09-17

Applicant: Steelcase Inc.

Inventor： Robert J. Battey ,  Richard N. Roslund, Jr. ,  Gary Lee Karsten ,  Kurt R. Heidmann ,  Nathan McCaughan ,  Pradeep Mydur ,  Russell T. Holdredge ,  Mark Vander Veen ,  Todd D. Krupiczewicz ,  Nathan R. Brock ,  Jeffrey A. Hall ,  Gordon J. Peterson ,  Todd T. Andres

IPC: A47C1/032 ,  A47C7/46

CPC classification number: A47C1/024 ,  A47C1/03 ,  A47C1/032 ,  A47C1/03255 ,  A47C1/03261 ,  A47C1/03266 ,  A47C1/03272 ,  A47C1/14 ,  A47C3/20 ,  A47C3/30 ,  A47C5/00 ,  A47C5/12 ,  A47C7/004 ,  A47C7/006 ,  A47C7/029 ,  A47C7/14 ,  A47C7/185 ,  A47C7/24 ,  A47C7/40 ,  A47C7/44 ,  A47C7/441 ,  A47C7/443 ,  A47C7/46 ,  A47C7/462 ,  A47C7/54 ,  A47C31/02 ,  A47C31/023 ,  B68G7/12 ,  Y10T29/481 ,  Y10T29/49826 ,  Y10T29/49947

Abstract: A chair assembly includes a base structure, a seat support structure movably coupled to the base structure, an upwardly-extending back support structure movably coupled to the base structure, wherein the back support structure is adapted to move between an upright and reclined positions, wherein the back support structure is operably coupled to the seat support structure, a flexible shell structure defining a forwardly-facing surface forming a lumbar support, wherein the flexible shell is movably coupled to the seat support structure, and a resilient member generating a variable compressive force acting on the flexible shell structure in a manner that tends to cause a curvature of the back support structure to increase, and wherein the compressive force decreases as the back support structure moves from the upright position to the reclined position.

Abstract translation: 椅子组件包括基座结构，可移动地联接到基座结构的座椅支撑结构，可移动地联接到基座结构的向上延伸的后支撑结构，其中后支撑结构适于在直立和倾斜位置之间移动，其中 后支撑结构可操作地联接到座椅支撑结构，柔性壳结构限定形成腰部支撑件的向前表面，其中柔性壳可移动地联接到座椅支撑结构，以及产生可变压缩力的弹性构件 作用在柔性外壳结构上，倾向于导致后支撑结构的曲率增加，并且其中当后支撑结构从直立位置移动到倾斜位置时，压缩力减小。