Patent ID: 11849855

Abstract:
A seat device that can easily and positively achieve the conversion of the state of a seat. A leg stand (11) fixed on a floor surface, a movable stand (20) supported by the leg stand (11) so as to be able to advance/retract in front and back directions, an underframe (30) of the seat supported by the movable stand (20) so as to be rotatable in forward and backward directions, and an interlocking mechanism (50) that interlocks advancement/retraction of the movable stand (20) with rotation of the underframe (30) are included. The interlocking mechanism (50) includes a plurality of cam grooves (51) that are provided to the leg stand (11), and regulates the trajectory of rotation or advancement/retraction of the underframe (30), a rotary member (52) that is provided to the underframe (30), and is engaged with the cam grooves (51) so as to be movable along the cam grooves (51), the engagement being always maintained to at least any portion of the cam grooves (51), and a switching portion (53) that is provided at a branch point in the cam grooves (51), and can switch the direction to which the rotary member (52) is guided at the branch point.