A rail system (1), for a vehicle seat, includes a lower rail (3), an upper rail (5), a sliding block (7) and at least one rolling body cage (9) having rolling bodies (11). The sliding block (7) is rigidly connected to the lower rail (3). The rolling body cage (9) is movable relative to the sliding block (7), parallel to a longitudinal axis (13) of the lower rail (3), between two end positions defined by end stops (71) of the sliding block (7). The rolling body cage (9) is coupled to the lower rail (3) via the rolling bodies (11). The upper rail (5) is mounted movably on the sliding block (7) along the longitudinal axis (13) of the lower rail (3) and is coupled to the rolling body cage (9).

A seating system comprises a plurality of seating assemblies having first and second-row seating assemblies. Each seating assembly includes a cradle pivotally coupled to a seat base and to a seatback. The seat base is movable between first and second positions. The seating assembly includes a base having first and second supports and a swivel plate assembly including first and second frames. The first frame is coupled to the cradle, and the second frame is coupled to the base. The swivel plate assembly includes first and second swivel plates, the first swivel plate coupled to the first frame and the second swivel plate coupled to the second frame. The first swivel plate is configured to allow the cradle to rotate between first and second positions relative to the base. The seating system includes a track assembly. The first and second supports of the base are slidably coupled to the track assembly.

In order to suppress a claustrophobic feeling that a person sitting on a rear seat receives due to a front seat, and to make the front seat easy to use as an ottoman by the person, a movement adjustment system is used for a passenger seat and a rear seat, and includes a slide rail for moving the rear seat in the front to back direction, and a control part for changing the movement region of the rear seat by the slide rail. The passenger seat has a seat cushion, and a seat back mounted to be changeable between an upright state and a lowered state with respect to the seat cushion. The control part changes the movement region so that the passenger seat and the rear seat can come closer when the seat back of the passenger seat is in the lowered state than in the upright state.

Roller guide comprising at least one guide rail, which has at least one first and one second planar region, and comprising a first and a second roller, which are each in contact with the guide rail and roll thereon, wherein the first and the second roller are mounted so that they are rotatable about a common axis of rotation and are formed rotationally-symmetrically about the axis of rotation and a radius of the first roller is smaller than a radius of the second roller, the first roller has a first circular-segment-shaped surface rolling region and the second roller has a second circular-segment-shaped surface rolling region and a centre point of the first surface rolling region and a centre point of the second surface rolling region are arranged on the axis of rotation.

A sliding device of the present disclosure includes: a fixed rail; a movable rail; a rack; a pinion; an intermediate gear; a driving device; and a support member. The support member includes a first support body and a second support body. The first support body and the second support body being coupled below the pinion and integrally molded. The sliding device further includes a restricting body configured to restrict elastic displacement such that an end of the first support body above the pinion and an end of the second support body above the pinion separate from each other.

A seat slide structure includes a cushion frame, a slide rail including lower and upper rails, a movement mechanism, and a lock mechanism. The movement mechanism slides the cushion frame along a length direction of the slide rail. The lock mechanism includes a lock body engaging with the slide rail, and places or lifts a restriction on movement of the slide rail. The movement mechanism includes a lead screw, a gear part, and a shake absorber. The lead screw is provided in parallel with the slide rail, and is supported by the upper rail. The gear part transmits power from a power source to the lead screw to slide the lead screw and the upper rail along the lower rail. The shake absorber allows the cushion frame and the lead screw to move relative to one another in a moving direction of the upper rail along the lower rail.

A seat apparatus includes: a seat on which a passenger of a vehicle sits; an inputter which is operated by the passenger; a fixer which fixes a position of the seat until the inputter is operated by the passenger and allows the position of the seat to be movable in a longitudinal direction of the vehicle when the inputter is operated by the passenger; and a restrictor which restricts the movement of the seat when a predetermined condition related to a traveling state of the vehicle or an external environment of the vehicle is satisfied in comparison with a case in which the predetermined condition is not satisfied.

A shaft housing hole has a shaft insertion hole into which the rotating shaft section of an engagement member is inserted. Also, the shaft housing hole has slits extending from the lower end of the shaft insertion hole along the side surface of the shaft insertion hole toward an upper connection wall section. The upper side wall section of an upper rail has shaft restriction sections formed by the shaft housing hole. The shaft restriction sections have front ends with which the side surfaces of the rotating shaft section are in contact.

An entry/exit support structure of a vehicle seat has: a side support portion that is provided in a seat transverse direction of a seat cushion, and that is displaced in a seat vertical direction; a seat sliding mechanism that supports the seat cushion to slide in a seat front-rear direction, and that has a locking device restricting sliding of the seat cushion in the seat front-rear direction; and a side support portion restricting mechanism having a release operation portion. In a state in which the release operation portion is positioned at a lock position, displacement of the side support portion in the seat vertical direction is restricted. In a state in which the release operation portion is positioned at a release position, displacement of the side support portion in the seat vertical direction is permitted and sliding of the seat cushion in the seat front-rear direction is permitted.

A vehicle seat longitudinal adjuster (106) includes a seat track pair (1) with a lower seat track (2) and an upper seat track (4) that mutually engage one another for guided relative and longitudinal direction (x) movement. The lower seat track (2) has a substantially C-shaped profile (20, 22) with sections (24) that are bent downward at the ends. The upper seat track (4) has a substantially U-shaped profile (40, 42) with end sections (44) that are bent upward; the relative displaceability of the two seat tracks (2, 4) with respect to one another is limited by means of an interaction of an end stop (30) disposed on the lower seat track (2) with a stop element (48) disposed on the upper seat track (4), and wherein the end stop (30) is designed in the form of an extension of part of the downward bent sections (24) and the lower seat track (2) comprises a slotted hole (32) in the region of the end stop (30).