Described are passenger seat headrest assemblies and seats including headrest assemblies having a semi-rigid flap fixedly connected with an upper portion of the seat back or headrest assembly at a first location and movably connected with the seat back or headrest assembly at a receiving element separated from the first location. The distance of the movable connection from the first location can be adjusted to cause the flexible headrest assembly to flex outward from the seat to provide a greater or lesser degree of support for a passenger.

Described are passenger seat headrest assemblies and seats including headrest assemblies having a semi-rigid flap fixedly connected with an upper portion of the seat back or headrest assembly at a first location and movably connected with the seat back or headrest assembly at a receiving element separated from the first location. The distance of the movable connection from the first location can be adjusted to cause the flexible headrest assembly to flex outward from the seat to provide a greater or lesser degree of support for a passenger.

A headrest device and a chair having the same are provided. The headrest device includes a support frame, a headrest component and a reset member. The support frame is pivotally connected with the headrest component, and the reset member is connected with the headrest component and configured to drive the headrest component to rotate relative to the support frame. The support frame is provided with a limiting convex block, and the limiting convex block can stop a rotation of the headrest component when the headrest component moves to an initial limiting position.

A headrest device and a chair having the same are provided. The headrest device includes a support frame, a headrest component and a reset member. The support frame is pivotally connected with the headrest component, and the reset member is connected with the headrest component and configured to drive the headrest component to rotate relative to the support frame. The support frame is provided with a limiting convex block, and the limiting convex block can stop a rotation of the headrest component when the headrest component moves to an initial limiting position.

Provided is a conveyance seat that effectively reduces a load to be applied to an occupant at the time of a vehicle collision. A conveyance seat includes a seat back and a headrest. The seat back includes a chest support member inside the seat back, which receives a chest of an occupant to support the chest of the occupant when a backward movement load is applied to the occupant because of a vehicle collision. The headrest includes a head support member inside the headrest, which receives a head of the occupant to support the head of the occupant when the backward movement load is applied to the occupant. When the backward movement load is applied to the occupant, both the chest support member and the head support member receive the backward movement load.

An ergonomically improved chair in which the user's thoracic region is supported by a narrow and generally flat or moderately convex thoracic cushion in the midrest region of the chairback. The design omits or greatly minimizes support for the user's scapulae and other areas of the back outside the thoracic region, excepting lumbar and cervical support features in some embodiments. The design differs from the prior art at least in that the thoracic cushion is narrow and configured not to complement that user's spinal curvature. By appropriate selection and design, a chair incorporating the invention may comprise a fabric covering portions of the chairback without significantly affecting functionality. Other embodiments include a chairback comprising regions having differing levels of firmness and/or differing cushion height at appropriate regions to promote concentrated support of the user's thoracic region.

An ergonomically improved chair in which the user's thoracic region is supported by a narrow and generally flat or moderately convex thoracic cushion in the midrest region of the chairback. The design omits or greatly minimizes support for the user's scapulae and other areas of the back outside the thoracic region, excepting lumbar and cervical support features in some embodiments. The design differs from the prior art at least in that the thoracic cushion is narrow and configured not to complement that user's spinal curvature. By appropriate selection and design, a chair incorporating the invention may comprise a fabric covering portions of the chairback without significantly affecting functionality. Other embodiments include a chairback comprising regions having differing levels of firmness and/or differing cushion height at appropriate regions to promote concentrated support of the user's thoracic region.

A body support assembly includes a seat assembly and backrest assembly supported by a tilt control assembly. Methods of using and assembling the body support assembly are provided.

The invention is directed to a portable head support designed to fit in the interior of a carry-on article carried by a passenger. The device provides head support for those who prefer sleeping in a face-down position and comprises a base and a head support connected along at least one of their abutting edges by a mechanism which permits the angle between the base and head support to be adjusted by the user.

A device for adjusting a position of a headrest for a vehicle includes: a stay mounted on a seatback frame; a main frame including a rotation guide hole, inserted into and mounted on the stay, and configured to ascend or descend along the stay; an elevation device mounted on the main frame and the stay, and configured to allow the main frame to ascend or descend along the stay; a rotating frame including a first end portion inserted into the stay and configured to ascend or descend along the stay, and a second end portion extending toward the rotation guide hole of the main frame; a rotating device mounted on the rotating frame and the rotation guide hole of the main frame, and configured to rotate the rotating frame along the rotation guide hole; and a headrest frame assembled to the rotating frame.