Abstract: A seat apparatus comprises a seat back as a backrest portion, a seat cushion as a seating portion, a link mechanism for supporting the seat cushion on a vehicle floor, a driving source for actuating the link mechanism to position the seat cushion between a seating position and a stored position, and the link mechanism which is pivotally mounted on the vehicle floor for defining a posture thereof and fixing the link mechanism to the vehicle floor.

Abstract: A seat adjusting device for adjusting an incline angle of a seat back relative to a seat cushion. A lower arm engages with a seat cushion and an upper arm engages a seat back. The lower arm has a hinge opening, and the upper arm has an opening eccentric to the hinge opening. A hinge shaft is rotatably inserted through the hinge opening and the eccentric opening and includes a convex portion engageable with the eccentric opening. An inner gear is disposed on one of the lower arm and upper arm, and an outer gear meshes with the inner gear. The outer gear has fewer teeth than the inner gear and is disposed on the other of the lower arm and upper arm. A wedge shaped member is disposed between the eccentric opening and the hinge shaft and is biased by an elastic member.

Abstract: A seat structure is provided which can more reliably detect seating by a smaller stroke of a seat cushion. Movable members 8, 51 and 231 operating in response to up and down movement of a seat cushion 1 and a switching means 4 able to abut against the movable members 8, 51 and 231 are provided, performing occupant detection based on the on/off operation of the switching means 4 by means of the movement operation of the movable members 8, 51 and 231 accompanying a fall of the seat cushion 1.

Abstract: A seat-height adjusting device wherein a seat-cushion is moved relative to a vehicle-floor side is comprised of a supporting shaft having a first true round portion, a tapered eccentric portion and a second true round portion and rotatably mounted at the vehicle-floor side so as to be movable along a lateral direction thereof, a first gear secured to the the vehicle-floor side, supporting the first true round portion of the supporting shaft and having an inner teeth portion, a second gear linked to the seat-cushion, supported on the second true round portion of the supporting shaft and having inner teeth portion whose teeth number is different from that of the inner teeth portion of the first gear, an intermediate gear mounted on the tapered eccentric portion of the supporting shaft, having an outer teeth portion engaged with the inner teeth portions of the first gear and the second gear and differed therefrom in teeth number, and a device for urging the supporting shaft in order to increase a relationship be

Abstract: A seat slide mechanism for vehicles includes a screw member extending longitudinally within an interior portion of the upper rail and a nut member engaging with the screw member. The nut member extends downwardly between the opposed walls of the upper rail to the base of the lower rail to form separated spaces at the both sides of the nut member and between laterally elongated slide members of the upper rail and the base portion of the lower rail. These separated spaces are helpful in arranging the rollers without any interference with the nut member or the screw member.

Abstract: A power-operated seat device is comprised of a pair of laterally spaced lower rails for mounting on a floor of a vehicle body, a pair of upper rails slidably mounted on the respective lower rails, a screw shaft rotatably mounted to each of the upper rails, a nut member threadably mounted on the screw shaft, driving device mounted on each of the upper rails and threadably engaged with the screw shaft for moving each upper rail, and a supporting device for mounting the nut member to lower rail, the supporting device including a first bracket to which the nut member is fixedly mounted, a second bracket secured to the lower rail, and a connecting device for connecting the first bracket and the second bracket.

Abstract: A seat sliding device is comprised of a pair of laterally spaced lower rails for mounting on a vehicle body floor, each of the lower rails including a channel, a pair of upper rails adapted to carry a seat cushion, each of the upper rails being slidably mounted at an engaging portion to the corresponding lower rail, each of the upper rails having a channel which is positioned above the engaging portion, a screw shaft accommodated in one of the channels, a nut member screwing onto the screw shaft and secured to one of the upper and lower rails, and bearing member supporting rotatably the screw shaft and elastically fit within the channel of the other of the upper and lower rails.

Abstract: A power seat frame assembly includes a screw nut and rod assembly which is pre-assembled as a unit before being mounted on a bracket fixed to a rail for vehicle's seat. A gear box of the screw rod and nut assembly is disposed merely in a space between opposed walls on the bracket and the screw rod is received in an opening upper recess of the bracket. Thus, the arrangement of the screw rod and nut assembly on the bracket becomes easier.

Abstract: A seat reclining apparatus is comprised of a pair of lower arms for supporting a seat-cushion, a lower plate having a first gear, a rivet for securing the lower plate to each of the lower arms after being passed through an aperture of the lower plate, a pair of upper arms for supporting a seat-back, an upper plate secured to each of the lower arms and having a second gear which is in meshing engagement with the first gear, and a shaft having a centric portion and an eccentric portion for rotatably mounting thereon the lower plate and the upper plate, respectively, wherein the rivet is formed into a stepped configuration in such a manner that the rivet has a first portion larger than the aperture in diameter and located between the lower arm and the lower plate, and a second portion larger than the first portion in diameter and located between the first portion and the lower arm, and an outer periphery of the upper plate is held between the second portion and the lower plate.

Abstract: A power operated seat device comprises: a pair of lower rails for fixing to a floor of a vehicle, a pair of upper rails for mounting a seat cushion of the vehicle mounted slidably on the lower rails respectively, each of the upper rails having an upstanding flange portion with a notch, a pair of brackets each of which is mounted detachably to the side of the corresponding flange portion so as to cover the notch, a rotational rod rotatably supported at both ends thereof to the corresponding bracket, a power source for rotating the rotational rod, and an adjusting the height mechanism provided between one of the upper rails and the seat cushion, and which is connected to the rotational rod and adjusts the height of a portion of the seat cushion by rotating of the rod.

Abstract: A sliding device for moving a seat in the lengthwise direction of a vehicle body is comprised of an upper rail having an inner space and supporting the seat, a lower rail having an inner space, secured to a floor of the vehicle floor and mounting the upper rail in such a manner that the upper and lower rails are inter-locked with each other, the upper rail is slidable along the lower rail and the inner space of the upper rail is positioned above the inter-locked portion, a screw shaft rotatably supported by the upper rail and located therein, a nut threadably mounted on the screw shaft and secured to the lower rail so as to be located in the inner space of the upper rail, and a motor for rotating the screw shaft.

Abstract: A power seat slide device for an automobile seat includes upper and lower guide rails and a nut and screw assembly for relative slidable movement between the upper and lower guide rails. Rollers are disposed in the lower guide rails and rotatably supported between the upper and lower guide rails. The power seat slide device further includes shoes or balls between the engagement portions provided on each of the upper and lower guide rails.

Abstract: A seat sliding apparatus for attachment to a vehicle comprises at least one lower rail fixedly secured to the vehicle; a corresponding upper rail slidably mounted on the lower rail, the upper rail being subject to a shock force in a direction separating the upper rail and the lower rail during operation of the vehicle; bearing device between the upper and lower rails for supporting the upper rail on the lower rail; and interlocking safety device on the upper and lower rails for maintaining substantial contact between the upper and lower rails and the bearing device when the shock force occurs.

Abstract: A power seat apparatus includes a seat driving mechanism for supporting a seat member. Upon adjustment of the position of the seat member, the rotational torque is transmitted to the seat driving mechanism via a cable which passes through a protection tube. For decreasing the friction between the cable and the protection tube, the cable is covered with another tube made of heat-shrinkable synthetic resin or is coated with synthetic resin.

Abstract: A power seat apparatus for an automotive vehicle in which a screw shaft supported on an upper rail having a seat cushion fastened thereto is moved relative to a lower rail secured to the vehicle body by a speed reducer and motor fixedly mounted on the lower rail. A coupling is provided for coupling an input shaft of the speed reducer and an output shaft of the motor. The input shaft has a longitudinally extending first groove at a distal end thereof, and the coupling has a first wall portion at one end for being inserted into the first groove. The output shaft has a longitudinally extending second groove perpendicular to the first groove at a distal end thereof, and the coupling has a second wall portion at its other end for being inserted into the second groove. The coupling also has an inner wall surface at the one end for receiving an outer wall surface of the distal end of the input shaft, an an inner wall surface at the other end for receiving an outer wall surface of the distal end of the output shaft.

Abstract: A seat back frame assembly, comprising a substantially U-shaped pipe member having a horizontal base and a pair of vertical legs extending upwardly from the horizontal base and terminating at a pair of upper ends, a transverse member having a first horizontal portion welded at the opposite ends to the upper ends of the pipe member, a first vertical portion depending from the first horizontal portion to extend along one side of the pipe member and having a lower end continuing to a second horizontal portion lying beneath the first horizontal portion between the vetical legs of the pipe member, and a second vertical portion depending from the second horizontal portion along the other side of the pipe member, each of the first and second vertical portions having opposite edge portions welded to the legs of the pipe member, the first horizontal portion having a pair of transversely spaced holes, the second horizontal portion having a pair of holes which are respectively aligned in vertical direction with the hole