Abstract: A vehicle seat for cooling and heating may include a seat pad, a mesh sheet having a certain thickness, a first film, and a porous seat cover, which are arranged sequentially in the direction in which air is introduced to flow. The seat pad has a pad hole, which allows air to pass through, and includes one or both of a seat cushion pad, which supports the buttocks of a user, and a seatback pad, which supports the upper body of the user. The mesh sheet has a porous network structure, through which air easily passes. The first film has a first film hole, which allows air to pass through. Air passages are maintained stable to maximize blowing performance, seating comfort is improved, and a ventilation structure is simplified to reduce manufacturing costs while improving productivity.

Abstract: An active headrest apparatus for a vehicle seat. A contact area in which the upper body of a person who is seated in a car in the event of a rear-end collision of the car is moved backward due to an inertial force and contacts a back plate can be increased, and a distance at which a headrest is moved and rises can be increased so that the function of an active headrest can be more faithfully performed and neck injury of the person who is seated in the car can be prevented to the maximum.

Abstract: An active headrest has a simple structure so that injuries of the neck and a portion near the neck of a passenger can be effectively prevented in the event of a rear-end collision and forward and rearward inclinations of the active headrest can be adjusted in an ordinary driving state to improve user's convenience and shake of the active headrest with respect to a vehicle seat in an ordinary state can be prevented to suppress noise and vibration and the quality of the vehicle seat and the car can be improved.

Abstract: An active headrest has a simple structure so that injuries of the neck and a portion near the neck of a passenger can be effectively prevented in the event of a rear-end collision and forward and rearward inclinations of the active headrest can be adjusted in an ordinary driving state to improve user's convenience and shake of the active headrest with respect to a vehicle seat in an ordinary state can be prevented to suppress noise and vibration and the quality of the vehicle seat and the car can be improved.

Abstract: An active headrest apparatus for a vehicle seat. A contact area in which the upper body of a person who is seated in a car in the event of a rear-end collision of the car is moved backward due to an inertial force and contacts a back plate can be increased, and a distance at which a headrest is moved and rises can be increased so that the function of an active headrest can be more faithfully performed and neck injury of the person who is seated in the car can be prevented to the maximum.

Abstract: An electronic gearshift device of a transfer case assembly for a four wheel drive vehicle is provided. The electric gearshift device comprises a motor, a camshaft rotatably driven by the motor, a rail member separated from the camshaft by a predetermined distance and positioned parallel to the camshaft; first and second forks installed on the rail member such that they are spaced apart from each other, and a cam fitted around and supported by the camshaft to selectively operate the first or second forks on the rail member to thereby effect gearshift.