Vehicle headrest device

A vehicle headrest device for a head of a passenger, the vehicle headrest device comprising:

• a headrest comprising:
• a pad portion configured to contact and support the head of the passenger;
• and
• a cover portion positioned behind the pad portion,
• wherein the pad portion is configured to move along an imaginary straight line inclined forward with respect to the cover portion of the headrest;
• a main frame coupled to a headrest stay and configured to move in an upwards/downwards direction along the headrest stay;
• and
• a motor module portion connected to the pad portion and the main frame such that, in operation, the motor module portion is configured to:
• move an entirety of the headrest, including the main frame and the cover portion, in the upwards/downwards direction;
• or
• move only the pad portion along the imaginary straight line,
• wherein:
• the motor module portion comprises a relax driving module configured to move the pad portion of the headrest along the imaginary straight line when the relax driving module operates, and
• the relax driving module comprises:
• a relax motor fixedly installed on a module base connected to the main frame;
• a relax lead screw connected to the relax motor and configured to rotate when the relax motor operates, wherein the relax lead screw is oriented at an angle offset from the upwards/downwards direction and parallel to the imaginary straight line;
• and
• a relax carrier having a first end penetrated by the relax lead screw through screw-coupling and a second end coupled to the pad portion of the headrest such that, during rotation of the relax lead screw, the relax carrier is configured to move along the relax lead screw and parallel to the imaginary straight line.

A vehicle including a headrest for a head of a passenger, the vehicle comprising:

• a vehicle body;
• a passenger seat in an interior of the vehicle body, the passenger seat comprising:
• a seat cushion configured to support a lower body of the passenger;
• a seat back configured to support an upper body of the passenger;
• and
• the headrest comprising:
• a pad portion configured to contact and support the head of the passenger;
• and
• a cover portion positioned behind the pad portion,
• wherein the pad portion being is configured to move along an imaginary straight line inclined forward with respect to the cover portion of the headrest;
• a stay guide coupled to an upper end of the seat back;
• a headrest stay fixedly installed and configured to penetrate the stay guide;
• a main frame coupled to the headrest stay and configured to move in an upwards/downwards direction along the headrest stay;
• and
• a motor module portion connected to the pad portion and the main frame such that, in operation, the motor module portion is configured to:
• move an entirety of the headrest, including the main frame and the cover portion, in the upwards/downwards direction;
• or
• move only the pad portion along the imaginary straight line.