A height adjustment mechanism for a headrest includes: a locking member configured to be locked with a height adjustment gear, the locking member having a first locking position and a first unlocking position, and the locking member being capable of switching between the first locking position and the first unlocking position; an operating member having an initial position, a first operating position and a second operating position; a safety lock structure configured to lock the locking member in the first locking position, the safety lock structure being movably connected on the operating member; and a driving member, one side of the driving member being slidably connected to the operating member, the other side of the driving member abutting against the locking member.

A height adjustment mechanism for a headrest includes: a locking member configured to be locked with a height adjustment gear, the locking member having a first locking position and a first unlocking position, and the locking member being capable of switching between the first locking position and the first unlocking position; an operating member having an initial position, a first operating position and a second operating position; a safety lock structure configured to lock the locking member in the first locking position, the safety lock structure being movably connected on the operating member; and a driving member, one side of the driving member being slidably connected to the operating member, the other side of the driving member abutting against the locking member.

An automotive seat with headrest assembly includes a seatback, a headrest, and a pair of headrest supports adapted to support the headrest on the seatback, each of the headrest supports including a lower rod, an upper rod, and an absorption unit positioned between and interconnecting the lower rod and the upper rod, the absorption unit adapted to allow angular deflection of the upper rod relative to the lower rod when a bending force is applied to the upper and lower rods, and to hold the lower and upper rods in a deflected orientation when the bending force is removed from the upper and lower rods.

An automotive seat with headrest assembly includes a seatback, a headrest, and a pair of headrest supports adapted to support the headrest on the seatback, each of the headrest supports including a lower rod, an upper rod, and an absorption unit positioned between and interconnecting the lower rod and the upper rod, the absorption unit adapted to allow angular deflection of the upper rod relative to the lower rod when a bending force is applied to the upper and lower rods, and to hold the lower and upper rods in a deflected orientation when the bending force is removed from the upper and lower rods.

A vehicle seat assembly is provided with a seat back frame with an upper crossbar. A deformable member is welded to the seat back frame. A pair of tubes is welded to the deformable member. A pair of head restraint posts are each received in one of the pair of tubes to support a head restraint. A pair of spaced apart limit bracket bases is welded to the upper crossbar and extend away from the seat back frame to support a pair of limit bracket contact portions. A pair of contact target plates are each welded to one of the pair of tubes, spaced apart from and aligned with one of the pair of limit bracket contact portions so that the deformable member deforms under a rear vehicle impact until the contact target plates contact the contact portions of the limit brackets.

A vehicle seat assembly is provided with a seat back frame with an upper crossbar. A deformable member is welded to the seat back frame. A pair of tubes is welded to the deformable member. A pair of head restraint posts are each received in one of the pair of tubes to support a head restraint. A pair of spaced apart limit bracket bases is welded to the upper crossbar and extend away from the seat back frame to support a pair of limit bracket contact portions. A pair of contact target plates are each welded to one of the pair of tubes, spaced apart from and aligned with one of the pair of limit bracket contact portions so that the deformable member deforms under a rear vehicle impact until the contact target plates contact the contact portions of the limit brackets.

A headrest assembly includes a headrest bun having an interior portion. A support armature includes a portion thereof disposed within the interior portion of the headrest bun. A support member includes a lattice matrix comprised of a plurality of interconnected links. The support member is supported within the interior portion of the headrest bun by the support armature. A receptacle is operably coupled to the lattice matrix of the support member within the interior portion of the headrest bun and includes an interior cavity. A weighted insert is removeably received within the interior cavity of the receptacle.

A headrest assembly includes a headrest bun having an interior portion. A support armature includes a portion thereof disposed within the interior portion of the headrest bun. A support member includes a lattice matrix comprised of a plurality of interconnected links. The support member is supported within the interior portion of the headrest bun by the support armature. A receptacle is operably coupled to the lattice matrix of the support member within the interior portion of the headrest bun and includes an interior cavity. A weighted insert is removeably received within the interior cavity of the receptacle.

The present invention provides a headrest that is low-cost but still provides impact mitigation performance, and a vehicle seat having this headrest. A headrest of a vehicle seat includes: a headrest frame that is formed of at least one plate material and is fixed to a seatback frame of the vehicle seat; a pad that covers the headrest frame; and a skin that covers the pad. A contact section is provided at the lower part of the headrest frame, said lower part being located on the seatback-frame side, and the contact section is located closer to the rear surface of the headrest than the upper part of the headrest frame is, said upper part being located on the opposite side to the seatback-frame side.

The present invention provides a headrest that is low-cost but still provides impact mitigation performance, and a vehicle seat having this headrest. A headrest of a vehicle seat includes: a headrest frame that is formed of at least one plate material and is fixed to a seatback frame of the vehicle seat; a pad that covers the headrest frame; and a skin that covers the pad. A contact section is provided at the lower part of the headrest frame, said lower part being located on the seatback-frame side, and the contact section is located closer to the rear surface of the headrest than the upper part of the headrest frame is, said upper part being located on the opposite side to the seatback-frame side.