A seat (S) comprises a seat portion (SP) having an occupant supporting surface (SPU) and a back portion (BP) having an occupant supporting surface (BPU) and head rest assembly (1), the head rest assembly (1) having a head rest portion (2) and a side impact portion (3), the head rest assembly (1) being secured or securable to the seat (S), and being movable towards and away from a seat portion (SP) of the seat (S), the side impact portion (3) comprising a pair of peripheral elongate portions (3a) which are pivotable together about a common pivot axis (P) and relative to the head rest portion (2) between a first position wherein each peripheral elongate portion (3a) extends along the occupant supporting surface (BPU) of the back portion (BP) of the seat (S) toward the seat portion (SP) and a second or stowed position.

A vehicle seat includes a seat cushion, a seatback, and a headrest. At least one of the seat cushion, the seatback, and the headrest includes a fixed part and a movable part. The fixed part and the movable part that is mounted so as to be movable relative to the fixed part are provided adjacent to each other. A border between the movable part and the fixed part is exposed to an outside of the seat. A movable-side edge of the movable part and a fixed-side edge of the fixed part are disposed adjacent to each other along a direction of movement of the movable part so as to form at least a part of the border exposed to the outside of the seat. The movable part moves relative to the fixed part while keeping a constant clearance between the movable-side edge and the fixed-side edge.

An aircraft seat device has a multi-part backrest frame unit comprising at least one first side frame element, at least one second side frame element, which is arranged on a side of the backrest frame unit that is opposite from the first side frame element, and at least one transverse frame element which is realized separately from the side frame elements and connects the side frame elements, wherein the transverse frame element is realized at least substantially plate-shaped.

A headrest assembly includes a lattice matrix having a plurality of three-dimensional (3D) cells. Each 3D cell of includes a node and a plurality of links outwardly extending from the node. The lattice matrix includes a plurality of sections including a first section having a first overall elastic modulus, a second section positioned adjacent to the first section and having a second overall elastic modulus that is higher than the first overall elastic modulus of the first section, and a third section positioned adjacent to the second section and having a third overall elastic modulus that is higher than the second overall elastic modulus of the second section. The lattice matrix is integrally constructed using an additive manufacturing technique, wherein the 3D cells of each section are provided in various patterns and cured to varying degrees to provide the varying overall elastic moduli of each section of the lattice matrix.

A vehicle may receive sensor data captured by a sensor, determine that the sensor data represents an object in the environment, and determine a collision probability associated with a predicted collision between the vehicle and the object. Based at least in part on the collision probability, a position of a headrest of the vehicle may be determined relative to a head of an occupant of the vehicle. The headrest may be adjusted in one or more directions prior to occurrence of the predicted collision to minimize injury to the occupant due to the collision.

A seat headrest includes: a pad assembly; a main cover surrounding a rear side of the pad assembly; an upper guide coupled to the main cover and provided with an upward/downward movement guide groove formed in the upper guide and elongated upward/downward; a post stay including an upper portion inserted in the upward/downward movement guide groove; and a post holding guide, in which the lower portion of the post stay is inserted and held and which is held to a seat back frame.

A reduced-impact-and-recoil headrest that includes a ratchet mechanism, allowing components to incrementally translate with respect to each other. The reduced-impact-and-recoil headrest includes an exterior housing surface that is deformable, providing cushioning for a vehicle occupant's head. The headrest also includes an interior compartment within the housing, with the ratchet mechanism disposed within the interior compartment. The headrest is configured to decrease the force of a collision experienced by the occupant, thereby decreasing the likelihood and severity of traumatic brain injuries resulting from the occupant's head striking a stationary headrest. Instead, the reduced-impact-and-recoil headrest is configured to incrementally move with the occupant's head, providing an incremental cushion for the occupant's head. The ratchet mechanism also prevents the reduced-impact-and-recoil headrest from automatically translating back to its pre-impact position, thereby decreasing the occupant's risk of ligament tear and whiplash.

A reduced-impact-and-recoil headrest that includes a ratchet mechanism, allowing components to incrementally translate with respect to each other. The reduced-impact-and-recoil headrest includes an exterior housing surface that is deformable, providing cushioning for a vehicle occupant's head. The headrest also includes an interior compartment within the housing, with the ratchet mechanism disposed within the interior compartment. The headrest is configured to decrease the force of a collision experienced by the occupant, thereby decreasing the likelihood and severity of traumatic brain injuries resulting from the occupant's head striking a stationary headrest. Instead, the reduced-impact-and-recoil headrest is configured to incrementally move with the occupant's head, providing an incremental cushion for the occupant's head. The ratchet mechanism also prevents the reduced-impact-and-recoil headrest from automatically translating back to its pre-impact position, thereby decreasing the occupant's risk of ligament tear and whiplash.

A headrest removal assembly is disclosed. The assembly may include a plunger including a plunger shaft and lever portion. The assembly may include a compressible spring coupled to the plunger and configured to surround at least a portion of the plunger shaft. The plunger configured to translate the stopper between at least a first position and a second position when a force is applied to the lever portion of the plunger to cause the plunger to compress a portion of the compressible spring within the cavity of the base to cause the stopper to disengage from the cavity within the headrest support plate to cause the headrest removal assembly to disengage from the headrest support plate.

The load applied to a connecting member that connects a second horizontal shaft to a base member in a headrest for a vehicle is reduced. The headrest comprises a pillar member including a right and a left vertical shaft extending upward from an upper part of a seat back, a right and a left first horizontal shaft extending forward from upper ends of the respective vertical shafts, each first horizontal shaft including a curved section, and a second horizontal shaft extending laterally between front parts of the first horizontal shafts, a base member including a base vertical portion extending vertically ahead of the vertical shafts, a base upper portion extending rearward from an upper end of the base vertical portion, and a right and a left first hole formed in the base upper portion to have the respective curved sections or the respective vertical shafts passed therethrough, a connecting member pivotably connecting the base upper portion to the second horizontal shaft, and a pad supported by the base member.