| 摘要 |
A linkage mechanism for a seating apparatus includes various components and moves the seating apparatus between closed, extended, reclined, and seat-lift positions. The linkage mechanism two linear actuators for automating adjustment of the linkage mechanism. A first phase involves a second linear actuator rotating a motor tube angularly within a first range of degrees, causing the seat-adjustment assembly to bias the seat-mounting plate. A second phase involves the second linear actuator rotating the motor tube angularly within a second range of degrees, causing a footrest assembly to extend or retract without affecting the back-mounting link bias. A third phase involves a first linear actuator causing the lift assembly to raise and tilt the base plate directly over the lift-base assembly. |
