Headrest device

A headrest device, which is equipped at an upper end part of a seat back of a high back seat and disposed on a frontal surface thereof, comprising:

• a headrest body formed independently of said seat back;
• a first engagement means provided at one of said seat back and headrest body, said first engagement means being formed by a bracket fixed to a headrest frame of said headrest body and including an upper inverted U-shaped hook-like male engagement section formed integrally with an upper end part of said bracket and a lower engagement means;
• and
• a second engagement means positioned on another of said seat back and headrest body, said second engagement means including an upper U-shaped wire forming a male engagement means, to which upper U-shaped wire, said inverted U-shaped hook-like male engagement section of said first engagement means is to be hookingly engaged, and a lower engagement means which is securely engaged with said lower engagement means of said first engagement means;
• wherein one of said two lower engagement means respectively of said first and second engagement means comprises a pair of spaced-apart sleeves each including a notched groove formed therein, in which notched groove, a snap spring is resiliently fitted, while the other of said two lower engagement means comprises a pair of stoppers, each engageable into the respective said pair of spaced apart sleeves and securely engaged thereto by said snap spring,
• wherein said headrest body is assembled with said seat back by causing said inverted U-shaped hook-like male engagement section of said first engagement means to be hookingly engaged with said upper U-shaped wire, and causing said lower engagement means of said first engagement means to be securely engaged with said lower engagement means of said second engagement means, respectively.