A relaxation comfort seat for a vehicle is equipped with a mechanism for realizing a relaxation comfort mode to enable an occupant to take a relaxed comfortable posture for providing comfort and stability to the occupant. In addition, even in a state in which a height of the seat is increased according to a body shape of the occupant, it is possible to easily realize the relaxation comfort mode of the seat.

A relaxation comfort seat for a vehicle is equipped with a mechanism for realizing a relaxation comfort mode to enable an occupant to take a relaxed comfortable posture for providing comfort and stability to the occupant. In addition, even in a state in which a height of the seat is increased according to a body shape of the occupant, it is possible to easily realize the relaxation comfort mode of the seat.

A position control system is disclosed that replaces a parallelogram or quadrilateral movement system with greater efficiency, economy, stability and utility by eliminating one of the four links and providing a non-linear path to be followed. This system includes a dynamic triangular mechanism for movement from a first position to at least a second position, with at least three (3) link members interconnected by pivots with a first base link member defining a non-linear path, said first base link member having a fixed base pivot and a follower pivot that moves along the non-linear path, a second fixed length support link member pivotally connected to the fixed base pivot, and a third follower link member pivotally connected to, and located between, the follower pivot and a connector pivot, wherein the follower link member is adapted for following the non-linear path, thereby creating a virtual triangle defined by the three link members while the follower pivot, fixed base pivot and the connector pivot interconnect the first base link member, the second fixed length support link member and the third follower link member.

The present disclosure relates to a height adjustment apparatus of a vehicle seat, whereby during a height adjustment of a seat cushion, a desired tilting angle of the seat cushion is obtained and heights of a front part and a rear part of the seat cushion are individually adjusted. Due to the height adjustment apparatus, the comfort of a seated occupant is improved by adjusting the angles of the seat cushion in response to various postures of the occupant. In addition, a link connection is structurally secured and thus its durability is also improved.

The present disclosure relates to a height adjustment apparatus of a vehicle seat, whereby during a height adjustment of a seat cushion, a desired tilting angle of the seat cushion is obtained and heights of a front part and a rear part of the seat cushion are individually adjusted. Due to the height adjustment apparatus, the comfort of a seated occupant is improved by adjusting the angles of the seat cushion in response to various postures of the occupant. In addition, a link connection is structurally secured and thus its durability is also improved.

A position control system is disclosed that replaces a parallelogram or quadrilateral movement system with greater efficiency, economy, stability and utility by eliminating one of the four links and providing a non-linear path to be followed. This system includes a dynamic triangular mechanism for movement from a first position to at least a second position, with at least three (3) link members interconnected by pivots with a first base link member defining a non-linear path, said first base link member having a fixed base pivot and a follower pivot that moves along the non-linear path, a second fixed length support link member pivotally connected to the fixed base pivot, and a third follower link member pivotally connected to, and located between, the follower pivot and a connector pivot, wherein the follower link member is adapted for following the non-linear path, thereby creating a virtual triangle defined by the three link members while the follower pivot, fixed base pivot and the connector pivot interconnect the first base link member, the second fixed length support link member and the third follower link member.

An improved system to raise and lower a seat by a simplified substantially parallelogram or non-parallelogram motion. By replacing two of the links of a parallelogram seat lift system with an arc, or a straight link as a mechanically defined path for a pivot to follow, space and material can be saved to fit an adjustable seat on an ATV or any type of support system. The system can be useful on many varieties of vehicles and other adjustable supports.

A vehicle seat including: a connection mechanism; a seat cushion connected to an interior structure of a vehicle via the connection mechanism and configured to be displaced between a first state and a second state at which the seat cushion is arranged at a position closer to a front part-side of the vehicle than at the first state; and a seat back, wherein a sitting surface of the seat cushion at the first state gradually inclines upwardly from the rear of the seat towards the front of the seat, and wherein the connection mechanism is configured to displace the seat cushion to the second state and move a front part-side of the seat cushion more downwardly than at the first state, whereby the sitting surface of the seat cushion is made more horizontal at the second state than at the first state.