초록 ▼

A back for a seating unit, such as a chair, includes a back frame and a compliant back that is flexibly bendable to define different curvilinear shapes for sympathetically and ergonomically supporting a seated user's back. The back includes a belt bracket with forwardly-extending flanges pivotally c

A back for a seating unit, such as a chair, includes a back frame and a compliant back that is flexibly bendable to define different curvilinear shapes for sympathetically and ergonomically supporting a seated user's back. The back includes a belt bracket with forwardly-extending flanges pivotally connecting the back to the back frame at a first connection generally aligned with a seated user's hip joint. The back includes a second connection pivotally connecting the back to the back frame at a second location spaced vertically above the first connection. An adjustable force generating mechanism is connected to the first connection that biases a lumbar portion of the back forward with respect to the chair. The first and second connections, in combination with the adjustable force generating mechanism, constrain the compliant back to move over a range that provides excellent ergonomic lumbar support to a seated user.

대표청구항 ▼

1. A seating unit comprising:a frame member; a back bendable to different shapes for engaging and ergonomically supporting a seated user's lumbar and torso; and a belt bracket attached to the back, and having flanges that extend from the back, the flanges pivotally connecting the back to the frame m

1. A seating unit comprising:a frame member; a back bendable to different shapes for engaging and ergonomically supporting a seated user's lumbar and torso; and a belt bracket attached to the back, and having flanges that extend from the back, the flanges pivotally connecting the back to the frame member at a first connection and the back being pivoted to the frame member at a second connection spaced vertically from the first connection, the back being constrained by the first and second connections and by the flanges so that a lumbar portion of the back is adapted to engage and provide ergonomic lumbar support to the seated user.