| 摘要 |
A chair back according to embodiments of the present invention includes a rigid support member for reclinable attachment to a base, a flexible frame member having a flexible frame and a mesh, the mesh at least partially spanning the frame, and a seat attachment member moving in synchronization with the rigid support member at a different rate than the rigid support member during reclining of the rigid support member, wherein a first portion of the flexible frame member is affixed to the rigid support member, wherein a second portion of the flexible frame member flexes freely, wherein the seat attachment member contacts at least part of the second portion of the flexible frame member, wherein the first portion moves with the rigid support member and the second portion moves with the seat attachment member such that a curvature of the second portion increases as the rigid support member reclines. |
| 主权项 |
1. A chair with a chair back, the chair comprising:
a chair base; a flexible frame member comprising a flexible frame and a mesh element, the mesh element at least partially spanning the flexible frame, and the flexible frame being comprised of an upper portion, an intermediate portion adapted to support a lumbar region of a user, and a lower portion; a plurality of resilient seat attachment members directly and fixedly coupled to the lower portion of the flexible frame member and directly and fixedly coupled to a seat, the seat being coupled to the chair base such that during reclining of the chair back, the seat at least translates backward relative to a rigid support member pivot point, the backward translation causing seat attachment members and the lower portion of the flexible frame member to at least translate backward in synchronization with the seat, the seat attachment members being free from any contact with the intermediate portion and the upper portion of the flexible frame member; and a rigid support member affixed to the upper portion of the flexible frame member such that the intermediate portion of the flexible frame member is defined between where the rigid support member couples to the flexible frame member and where the seat attachment members couple to the flexible frame member outwardly of the rigid support member, the rigid support member being reclinably attached to the chair base at the rigid support member pivot point and independent of the seat attachment members, the rigid support member being free to reline about the rigid support member pivot point, the flexible frame member, the attachment members, and the rigid support member being configured such that during reclining of the chair back, the upper portion of the flexible frame member moves with the rigid support member and the lower portion of the flexible frame member moves with the seat attachment members and the seat such that a degree of curvature of the intermediate portion of the flexible frame member increases while remaining free from any contact with the rigid support member and the at least one seat attachment member during reclining of the chair back. |
