ARTICULATING BED WITH ADJUSTABLE ARTICULATING LUMBAR SUPPORT

摘要

An actuating mechanism for lumbar support in an articulating bed incorporates a support frame for an articulating section having a seat section and an upper body support section. An actuator with a ram is pivotally attached to the upper body support section with a bracket. A lumbar actuation lever is pivotally attached to the ram and extends from a torque tube rotatable in bearing blocks mounted to the upper body support section. A second actuator is pivotally attached to the upper body support section with a second bracket and includes a second ram. At least one angled lifter arm extends from the torque tube and pivotally attaches to at least one lever engaging a lumbar support element through at least one aperture in the upper body support section. An actuator element extends from at least one lever and is connected to the second ram. The actuator element and associated lever rotate about a pivot point on the associated angled lifter arm.

主权项

1. A lumbar support adjustment mechanism for an articulating bed comprising:
a first actuator pivotally attached to an upper body support section with a first bracket, said first actuator including a first ram; a lumbar actuation lever extending from a torque tube rotatable in bearing blocks mounted to the upper body support section and pivotally attached to the first ram; a second actuator pivotally attached to the upper body support section with a second bracket, said second actuator including a second ram; at least one angled lifter arm extending from the torque tube and pivotally attached to at least one lever engaging a lumbar support element through at least one aperture in the upper body support section; an actuation element extending from at least one lever and connected to the second ram, said actuation element and at least one lever rotating about a pivot point on said at least one angled lifter arm; said lumbar support element extendible with respect to the upper body support section, with the first ram in a first position creating minimal deflection in a lumbar region of a mattress supported on the upper body support section, and said torque tube rotated with the first ram in a second position extending the at least one angled lifter arm through the at least one aperture to elevate the lumbar support element; and, said lumbar support element positionable across an arc from an upper position with respect to the upper body support section with the second ram in a first position to a lower position with respect to the upper body support section with the second ram in a second position.