Vehicle seat device

A seat apparatus comprising:

• a seat slide mechanism adjusting a position of a vehicle seat, the seat slide mechanism being switchable between an adjustment restricted state in which a position adjustment is restricted and an adjustment permitted state in which the position adjustment is permitted;
• a seat recliner mechanism adjusting an angle of a seatback, the seat recliner mechanism being switchable between an adjustment restricted state in which an angle adjustment is restricted and an adjustment permitted state in which the angle adjustment is permitted;
• and
• a walk-in mechanism disposed between the seat slide mechanism and the seat recliner mechanism to cause the seat slide mechanism and the seat recliner mechanism to operate in conjunction with each other,
• the walk-in mechanism including:
• a first transmission member which is displaced in conjunction with an angle change of the seatback;
• a second transmission member which is displaced between a position where the seat slide mechanism is switched to the adjustment restricted state and a position where the seat slide mechanism is pressed to be switched to the adjustment permitted state in a state where displacement of the first transmission member is transmitted to the second transmission member;
• and
• a clutch disposed between the first transmission member and the second transmission member, the clutch switching presence and absence of displacement transmission from the first transmission member to the second transmission member based on a contact pressure between the second transmission member and the seat slide mechanism.