ADJUSTABLE SEAT

摘要

A seat assembly includes a seat frame, a back frame 320 defining a back plane pivotally connected to the seat frame at a pivot joint, a back support 310 slideably secured to the back frame, and a back support adjusting mechanism. The back support adjusting mechanism includes a first linking member 355 coupling the back support to the seat frame and pivotable about the pivot axis, and a first slide member 351 slideably supported by the back frame and operatively connected to the first linking member. A second slide member 354a is affixed to the back support and slideably supported by the back frame. A second linking member 352 operatively connects the first and second slide members. Pivoting movement of the back frame from the upright position to the reclined position slides the first slide member away from the pivot axis, causing the second linking member to slide the back support toward the pivot axis.

主权项

1. A seat assembly comprising:
a seat frame defining a seating area; a back frame pivotally connected to the seat frame at a pivot joint and pivotable about a pivot axis defined by the pivot joint between an upright position and a reclined position, the back frame having a width extending in the direction of the pivot axis and a length extending radially from the pivot axis; a back support slideably secured to the back frame; and a back support adjusting mechanism, comprising: a first linking member coupling the back support to the seat frame and pivotable about the pivot axis when the back frame is pivoted between the upright and reclined positions; a first slide member slideably supported by the back frame and operatively connected to the first linking member, such that pivoting movement of the back frame from the upright position to the reclined position slides the first slide member away from the pivot axis, and pivoting movement of the back frame from the reclined position to the upright position slides the first slide member towards the pivot axis; a second slide member affixed to the back support and slideably supported by the back frame; and a second linking member operatively connecting the first slide member to the second slide member, such that sliding movement of the first slide member away from the pivot axis causes the second linking member to slide the second slide member and the back support toward the pivot axis, and sliding movement of the first slide member towards the pivot axis causes the second linking member to slide the second slide member and the back support away from the pivot axis.