| 摘要 |
PURPOSE: A headrest moving device, which can move a headrest in back and forth directions and top and bottom directions, is provided to protect the neck of a passenger in car crash. CONSTITUTION: A headrest moving device comprises upper and lower links, a connection link, a second pole(270), a back and forth movement part(200) and a first spring(150). The connection links are connected to upper and lower links to rotate. The back and forth movement part has a second spring(280). The second spring has one side installed in the second pole. |
