| 摘要 |
PURPOSE: A headrest device is provided to steadily support a head of a user and to conveniently control an angle. CONSTITUTION: A headrest device comprises a headrest device(1), a support frame(10) and a headrest(20). The support frame is combined in the back panel of a chair, supports the headrest and comprises a first circle body part and a second circle body part which is separately installed on the coaxial. The headrest is combined in the support frame and comprises a third circle body which is inserted between the first circle body and the second circle body. |
