| 摘要 |
A vehicle head rest is provided to minimize the generation of noise by operating a head rest with air pressure and to improve the value of products for a truck driver driving a long distance. A vehicle head rest includes a pressurizing unit(10), a cylinder unit(20), actuating units(30), a variable chamber(40), and a switch unit(50). The pressurizing unit is disposed at one side of a head rest. The cylinder unit is connected to the pressurizing unit and changes the length of the head rest by the pressurizing unit. The actuating units are connected to two sides of the cylinder unit and receive an actuating force of the cylinder unit. The variable chamber is installed inside the head rest. The volume of the variable chamber is varied by the actuators. The switch unit is connected to the pressurizing unit and is operated by a driver. |
