Vehicle seat and adjustment method for pad vibration characteristic

A vehicle seat comprising:

• a pad including a foam;
• and
• a volume adjustment mechanism that allows adjustment of a volume of the foam,
• the pad comprising:
• a main pad member including a foam;
• and
• a side pad member including a foam and disposed adjacent to each of both sides of the main pad member;
• wherein the foam of the side pad member has a thickness in a vertical direction larger than a thickness of the foam of the main pad member and protrudes above in the vertical direction relative to the foam of the main pad member;
• the volume adjustment mechanism comprises a pressing member being movable in a horizontal direction, and the pressing member moves and presses the foam of the main pad member to thereby be capable of compressing the foam of the main pad member in the horizontal direction;
• the pressing member is arranged between the foam of the main pad member and the foam of the side pad member;
• and
• the foam of the side pad member includes a coating portion protruding toward the main pad member so as to cover an upper side of the pressing member and vertically overlapping with an end portion on an upper surface of the foam of the main pad member.