Abstract: A vehicle seat may include a seat main body, a rotation mechanism that is arranged and constructed to horizontally rotate the seat main body between a forwardly facing position and a laterally facing position, a sliding mechanism, and a rotation locking mechanism. The rotation locking mechanism is arranged and constructed to prevent the seat main body from rotating when the seat main body is in a laterally facing position. The rotation locking mechanism includes a first engagement portion, a second engagement portion, and a lock releasing portion. The second engagement portion is capable of moving between a condition in which it does not engage the first engagement portion and a position in which it engages the first engagement portion when the seat main body is in the laterally facing position. The lock releasing portion is arranged and constructed to be engaged with and disengaged from the second engagement portion depending upon the sliding motion of the sliding mechanism.

Abstract: A vehicle seat may include a seat main body, a rotation mechanism that is arranged and constructed to horizontally rotate the seat main body between a forwardly facing position and a laterally facing position, a sliding mechanism, and a rotation locking mechanism. The rotation locking mechanism is arranged and constructed to prevent the seat main body from rotating when the seat main body is in a laterally facing position. The rotation locking mechanism includes a first engagement portion, a second engagement portion, and a lock releasing portion. The second engagement portion is capable of moving between a condition in which it does not engage the first engagement portion and a position in which it engages the first engagement portion when the seat main body is in the laterally facing position. The lock releasing portion is arranged and constructed to be engaged with and disengaged from the second engagement portion depending upon the sliding motion of the sliding mechanism.

Abstract: It is one object of this invention to provide a technique that is effective in diminishing the range of fluctuation of a load applied to a drive source when a seat main body in a vehicle seat moving apparatus is moved between a raised position and a lowered position. For this purpose, this invention provides a vehicle seat moving apparatus constructed as follows. Provided on a rotation base 31, for rotating a seat main body 10 between a position where it faces the front side of the vehicle and a position where it faces a door opening, is a widthwise slide base 41 that moves horizontally in the vehicle width direction while the seat main body 10 faces the door opening. The seat main body 10 is supported by the slide base 41 via four-bar linkage mechanisms 44. Guide rollers 46 are attached to upper link arms 44a of the four-bar linkage mechanisms 44. The guide rollers 46 are placed on cam surfaces of cam plates 47 provided to the rotation base 31.

Abstract: It is one object of this invention to provide a technique that is effective in diminishing the range of fluctuation of a load applied to a drive source when a seat main body in a vehicle seat moving apparatus is moved between a raised position and a lowered position. For this purpose, this invention provides a vehicle seat moving apparatus constructed as follows. Provided on a rotation base 31, for rotating a seat main body 10 between a position where it faces the front side of the vehicle and a position where it faces a door opening, is a widthwise slide base 41 that moves horizontally in the vehicle width direction while the seat main body 10 faces the door opening. The seat main body 10 is supported by the slide base 41 via four-bar linkage mechanisms 44. Guide rollers 46 are attached to upper link arms 44a of the four-bar linkage mechanisms 44. The guide rollers 46 are placed on cam surfaces of cam plates 47 provided to the rotation base 31.

Abstract: A rotating vehicle seat allows space close to an occupant's feet to be used efficiently. The rotating seat has a seat body 2 supported by a rotary disc 13. The rotary disc 13 is mounted at a position that is displaced to a door opening side with respect to a center HP of a seat cushion. A pinion gear 6, an intermediate gear 36 and a rack 38 engage each other so that the rotational movement and the longitudinal movement of the seat body 2 are coupled to each other.