The structure for adjusting a support force of a lumbar pillow includes: a backrest bracket, a lumbar pillow, an elastic support, and an adjustment mechanism; wherein a top of the lumbar pillow is flexibly connected to a front side of the backrest bracket; one end of the elastic support is connected to a back of the lumbar pillow, and the other end of the elastic support is provided with a slider, the slider being provided with an internally threaded hole; the adjustment mechanism includes a lead screw; and in response to the lead screw rotating with respect to the backrest bracket, the slider slides upward and downward along the vertical direction of the backrest bracket to change a support angle of the elastic support for the lumbar pillow, such that a magnitude of the support force of the elastic support to the lumbar pillow is adjusted.

A support for a chair includes: a base plate (110); support plates (120, 130), of which one sides are rotatably coupled to the base plate (110); and a first hinge (150) which connects the base plate (110) and the support plates (120, 130) to be rotatable, wherein the base plate (110) is supported by a seat portion (11) of a chair (10) and the support plates (120, 130) are supported by a back portion (12) of the chair (10) while the base plate (110) and the support plates (120, 130) are unfolded at a first maximum unfolding angle (θ1m) and support the upper body of a user.

A tensioning strap, the stiffness of which can be varied in a wide range of values, is provided. The tensioning strap comprises a base body, made as a strip of flexible material, and one or more stiffening elements applied to the base body. The stiffening elements can be applied to the base body in a permanent, non-removable manner, or, in a removable manner. In this way, the stiffening elements can be applied, removed, displaced, replaced with stiffening elements of different types depending on the needs. The tensioning strap finds particular, though non-exclusive, application in the making of a system of tensioning straps for a system for supporting a human body or a segment thereof.

A tensioning strap, the stiffness of which can be varied in a wide range of values, is provided. The tensioning strap comprises a base body, made as a strip of flexible material, and one or more stiffening elements applied to the base body. The stiffening elements can be applied to the base body in a permanent, non-removable manner, or, in a removable manner. In this way, the stiffening elements can be applied, removed, displaced, replaced with stiffening elements of different types depending on the needs. The tensioning strap finds particular, though non-exclusive, application in the making of a system of tensioning straps for a system for supporting a human body or a segment thereof.

A vehicle seat can be configured to provide support to a vehicle occupant in conditions when lateral acceleration is experienced. Shape memory material members can be operatively positioned with respect to a seat portion of the vehicle seat. The shape memory material members can be selectively activated by an activation input. When activated, the shape memory material members can engage a seat pan so as to cause the seat pan to tilt in a respective lateral direction. As a result, a seat cushion supported by the seat pan can also tilt in the respective lateral direction. The seat cushion can be tilted in a lateral direction that is opposite to the direction of the lateral acceleration. Thus, the effects of lateral acceleration felt by a seat occupant can be reduced. The shape memory material members can be selectively activated based on vehicle speed, steering angle, and/or lateral acceleration.

An automatically adjusting comfort method includes measuring pressure applied by a user via a pressure-sensor array, determining a pressure profile based on measurements from the pressure-sensor array, comparing the pressure profile to a first limit, determining a cumulative pressure profile over a predetermined duration, comparing the cumulative pressure profile to a second limit, and adjusting one or more of a plurality of adjusting mechanisms configured to alter the pressure profile for increased comfort of the user when the pressure profile exceeds the first limit or the second limit. An automatically adjusting comfort system includes a pressure-sensor array communicatively coupled to a controller for determining a cumulative pressure profile over time, and a plurality of adjusting mechanisms configured to alter the pressure profile to increase a user's comfort, wherein the controller automatically adjusts one or more of the plurality of adjusting mechanisms based on the cumulative pressure profile.

An automatically adjusting comfort method includes measuring pressure applied by a user via a pressure-sensor array, determining a pressure profile based on measurements from the pressure-sensor array, comparing the pressure profile to a first limit, determining a cumulative pressure profile over a predetermined duration, comparing the cumulative pressure profile to a second limit, and adjusting one or more of a plurality of adjusting mechanisms configured to alter the pressure profile for increased comfort of the user when the pressure profile exceeds the first limit or the second limit. An automatically adjusting comfort system includes a pressure-sensor array communicatively coupled to a controller for determining a cumulative pressure profile over time, and a plurality of adjusting mechanisms configured to alter the pressure profile to increase a user's comfort, wherein the controller automatically adjusts one or more of the plurality of adjusting mechanisms based on the cumulative pressure profile.

A chair includes a back portion configured to engage a back of an occupant of the chair. The chair includes a frame and a conformable panel coupled to the frame. The conformable panel is configured to engage the back of the occupant of the chair, and the conformable panel includes a lumbar portion. A lumbar support mechanism is coupled to the frame. The lumbar support mechanism includes a base coupled to the frame and a lever pivotably coupled to the base. The lever comprises a shaft and a cam coupled to and being pivotable with the shaft relative to the base. A panel support translatably is coupled to the base and engaged with the cam. The lever is pivotable relative to the base to cause the cam to translate the panel support relative to the base and apply a force to the lumbar portion of the conformable panel.

A seating device (1) with a reclining function comprising a back frame (4) which provides a significant reduction in the complexity of the system, at the same time as it gives the user increased comfort both in an upright (sitting) position and in a reclining position. The back frame (4) comprises in particular two types of resilient elements (7, 8) and rotatable fasteners (6) which provide adaptive support to the lumbar spine in both a sitting and reclining position.

A seating device (1) with a reclining function comprising a back frame (4) which provides a significant reduction in the complexity of the system, at the same time as it gives the user increased comfort both in an upright (sitting) position and in a reclining position. The back frame (4) comprises in particular two types of resilient elements (7, 8) and rotatable fasteners (6) which provide adaptive support to the lumbar spine in both a sitting and reclining position.