Abstract: A conveyance seat for reducing the degree of rattling includes a link group for switching a state of an ottoman, an advancing/retreating member for moving straight while advancing/retreating for moving each link, and a tip end receiver attached to a tip end portion of the advancing/retreating member and for receiving drive force of the advancing/retreating member to transmit the drive force to the link group, which includes a sub-link assembled to one of two crosslinks via a rivet and for swinging by the transmitted drive force. In a case where a first trajectory upon rotation of a fixing portion of the tip end portion of the advancing/retreating member about the point of support in rotation and a second trajectory upon rotation of a portion of the sub-link about the rivet are projected onto a virtual plane perpendicular to an axial direction of the rivet, both trajectories cross each other.

Abstract: A torsion bar configured to assist height adjustment of a seat cushion frame is housed in a hollow coupling pipe positioned between side frames. The inside of the coupling pipe has first and second engagement portions configured to engage and hold one end portion of the torsion bar in an extension direction thereof. The first engagement portion is engaged with a first engaged portion of the one end portion. The second engagement portion is engaged with a second engaged portion of the one end portion in the same position as a position of engagement between the first engagement portion and the first engaged portion in the seat width direction or in a position on the inner side from the position of engagement in the seat width direction, the second engaged portion being positioned closer to one end of a biasing member in the extension direction than the first engaged portion.

Abstract: In a vehicle seat including an adjustment device configured to move a front end of a seat cushion to adjust the length of the seat cushion in a front-to-back direction, the adjustment device has a support portion movable back and forth relative to a seat cushion frame, and a roller portion rotatably supported by the support portion and configured such that a pad material is wound around an outer peripheral portion at a front end portion of the seat cushion. The length of the seat cushion is adjustable by a change in an amount of winding of the pad material around the outer peripheral portion corresponding to a rotation of the roller portion during front-to-back movement of the support portion. The outer peripheral portion of the roller portion is made of a soft material.

Abstract: A conveyance seat for reducing the degree of rattling includes a link group for switching a state of an ottoman, an advancing/retreating member for moving straight while advancing/retreating for moving each link, and a tip end receiver attached to a tip end portion of the advancing/retreating member and for receiving drive force of the advancing/retreating member to transmit the drive force to the link group, which includes a sub-link assembled to one of two crosslinks via a rivet and for swinging by the transmitted drive force. In a case where a first trajectory upon rotation of a fixing portion of the tip end portion of the advancing/retreating member about the point of support in rotation and a second trajectory upon rotation of a portion of the sub-link about the rivet are projected onto a virtual plane perpendicular to an axial direction of the rivet, both trajectories cross each other.

Abstract: In a vehicle seat including an adjustment device configured to move a front end of a seat cushion to adjust the length of the seat cushion in a front-to-back direction, the adjustment device has a support portion movable back and forth relative to a seat cushion frame, and a roller portion rotatably supported by the support portion and configured such that a pad material is wound around an outer peripheral portion at a front end portion of the seat cushion. The length of the seat cushion is adjustable by a change in an amount of winding of the pad material around the outer peripheral portion corresponding to a rotation of the roller portion during front-to-back movement of the support portion. The outer peripheral portion of the roller portion is made of a soft material.

Abstract: A torsion bar configured to assist height adjustment of a seat cushion frame is housed in a hollow coupling pipe positioned between side frames. The inside of the coupling pipe has first and second engagement portions configured to engage and hold one end portion of the torsion bar in an extension direction thereof. The first engagement portion is engaged with a first engaged portion of the one end portion. The second engagement portion is engaged with a second engaged portion of the one end portion in the same position as a position of engagement between the first engagement portion and the first engaged portion in the seat width direction or in a position on the inner side from the position of engagement in the seat width direction, the second engaged portion being positioned closer to one end of a biasing member in the extension direction than the first engaged portion.