Vehicle seat

A vehicle seat comprising:

• a seat body;
• a rotation mechanism having a rotation table that is capable of rotating along a vehicle floor;
• a vertically moving mechanism having a first slide mechanism, a link mechanism and a guide mechanism, wherein the first slide mechanism is disposed on said rotation table and having a slide base that is capable of being advanced or retracted, wherein one end of the link mechanism is vertically rotatably connected to said slide base, and wherein the guide mechanism is capable of guiding said link mechanism so as to vertically move the other end of said link mechanism as said slide base advances or retracts;
• and
• a second slide mechanism that supports the seat body on the other end of said link mechanism so as to be capable of being advanced and retracted,
• wherein said seat body is capable of being lowered by said vertically moving mechanism so as to be moved from an interior position to an exterior position after the seat body is rotated from a seating position in which the seat body faces a front side of a vehicle to a laterally facing position in which the seat body faces a door opening by said rotation mechanism and is then advanced toward a vehicle exterior by said second slide mechanism, and wherein said seat body is capable of being moved from the exterior position to the interior position by performing a reverse operation,
• the vehicle seat further comprising:
• an engagement member connected to said seat body;
• a slide engagement member connected to the vehicle floor;
• and
• an intermediate member having a first receiving portion and a second receiving portion, wherein the intermediate member is constructed so as to be incapable of moving relative to said slide base in an advancing-retracting direction and to be capable of moving between a restraint position and a restraint release position, and wherein the intermediate member is capable of moving to the restraint position when a force directed forwardly or forwardly-upwardly is applied to said first receiving portion,
• wherein said engagement member is constructed to normally not preclude said seat body from being advanced and retracted with respect to said link mechanism,
• wherein the engagement member is constructed to engage the first receiving portion of said intermediate member when said seat body moves forwardly or forwardly-upwardly with respect to said slide base upon front-end collision of the vehicle in a condition that said seat body is in the interior position, thereby transmitting a force to urge said seat body to further move to the intermediate member,
• wherein said intermediate member is constructed to normally not preclude said seat body, the second slide mechanism and the vertically moving mechanism from rotating with respect to the vehicle floor, and to normally not preclude said slide base from being advanced and retracted with respect to said rotation base, and
• wherein the intermediate member is also constructed such that said second receiving portion engages said slide engagement member when the intermediate member moves to said restraint position by a force transmitted from said engagement member upon the front-end collision of the vehicle in a condition that said seat body is in the interior position, thereby transmitting the force to urge the seat body to move forwardly or forwardly-upwardly to the vehicle floor.