| 摘要 |
Provided is an adjustable headrest installed at an upper portion of a seatback of a chair which a user's head contacts characterized in that an ergonomic head-shaped recess is provided such that the recess is adjusted to be appropriate to different head sizes, head shapes, and neck shapes of users to conveniently seat the neck and the head, allowing the user to rest and sleep on the chair. The adjustable headrest mounted on the chair includes an upper block having an upper recess concaved in the front thereof to seat the head, and a lower block disposed under the upper block and having a lower recess concaved in the front thereof to seat the neck. Here, the upper block and the lower block are movable relative to each other. |
