Chair, a support, and components

摘要

A chair has a seat support, a seat portion, a back portion, and a supporting frame. The supporting frame is formed by a castored base, a height adjustment mechanism, and a main transom. The seat portion is selectively moveable relative to the supporting frame, with the seat portion having a locked configuration and a released configuration. The back portion has a back frame and a compliant cover. The back frame has hood features for receiving a portion of the compliant cover. The back portion is reclinable relative to the supporting frame between an upright position and a reclined position. A recline mechanism has deformable members operatively connecting the seat portion and the supporting frame. A recline resistance mechanism is selectively engageable to resist movement of the back portion toward the reclined position.

主权项

1. A chair comprising:
a supporting frame; a seat portion for supporting an occupant; and a back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; and a recline resistance mechanism that is selectively engageable to resist movement of the back portion toward the generally reclined position, the recline resistance mechanism comprising: a recess in a first chair component, the recess formed by walls that progressively narrow the recess from a first end to a second end of the recess; a shuttle that is slidably engaged with the recess in said first chair component, at least part of the shuttle being resilient and configured such that as the shuttle slides through at least part of the recess, said at least part of the shuttle is compressed by narrowing of the walls, with friction between the shuttle and the recess resisting movement of the shuttle in the recess; and an engaging member operatively connected to a second chair component, the engaging member being actuable to selectively operatively engage the shuttle or to selectively release the shuttle; wherein, when the engaging member is selectively operatively engaged with the shuttle, movement between the shuttle and the second chair component is resisted, so that upon movement of the back portion toward the generally reclined position, the shuttle is caused to slide in the recess, with friction between the shuttle and the recess applying a resistance against movement of the back portion toward the generally reclined position.