A track adjuster includes a first pair of tracks, a first lockset that may be configured to selectively restrict movement of the first pair of tracks, a second pair of tracks, and a second lockset configured that may be configured to selectively restrict movement of the second pair of tracks. The first lockset may be a first type of lockset and the second lockset may be a second type of lockset. The first lockset may include a positive engagement locking lockset. The second lockset may include a pawl-type lockset.

A track adjuster includes a pair of tracks, a lockset configured to selectively restrict movement of the pair of tracks, a first lever configured to actuate an actuator of the lockset, a second lever configured to actuate the first lever, and a spring configured to apply a first biasing force to the first lever in a first rotational direction and apply a second biasing force to the first lever in a second rotational direction. The spring may be a torsion spring that may be wrapped at least partially around a cross member connecting the pair of tracks with a second pair of tracks.

A longitudinally adjustable vehicle seat comprises a seat frame, a backrest pivotally mounted on the seat frame and foldable down in the direction of a seat surface of the seat frame, a longitudinal rail guide having a guide rail pair 2 including a lower guide rail 21 and an upper guide rail 22, a seat adjuster mechanism including a releasable locking device 3 for locking and unlocking the position of the upper guide rail 22 relative to the lower guide rail 21 in a design position P between an internal full rear limit stop and a comfort full forward limit stop 62 defining a functional comfort adjustment range D, an easy-entry mechanism for displacing the vehicle seat to an extended travel full forward position C upon folding down the backrest onto the seat surface, and a pivotable over-travel and limit stop bracket 5 which is adapted to rotate to bypass the comfort full forward limit stop 62 upon activation of the easy-entry mechanism for entering an extended travel range.

A vehicle seat longitudinal adjustment device (1, 10) includes a seat rail (2.1, 20.1) secured to the vehicle and a seat rail (2.2, 20.2) attached to the seat, which mutually engage to form a rail profile and move in relation to one another in a longitudinal direction, a rail lock (3, 30) to lock the seat rails to one another; and an actuation assembly (4, 40) for actuating the rail lock. An adapter (5, 50) is arranged between the actuation assembly and the rail lock. The adapter is configured as a force transmission element with a connection region (5.1, 50.1) that protrudes from the rail profile for connecting the actuation assembly. An integrated unlocking element (5.6, 50.6) is provided on the adapter for unlocking the rail lock. The unlocking element is configured to operatively engage in the rail lock, when the actuation assembly is actuated, in order to unlock same.

A track assembly includes a first pair of tracks, a first lockset that may be configured to selectively restrict movement of the first pair of tracks, a second pair of tracks, a second lockset that may be configured to selectively restrict movement of the second pair of tracks, and a cross member that may be connected between the first pair of tracks and the second pair of tracks. The cross member may be configured to actuate the first lockset and the second lockset. The cross member may include a first section and a second section. The first section and the second section may be configured to rotate relative to each other.

A vehicle slide rail device including a release operation member which is configured to release a lock mechanism and slide together with a memory member by removing the memory member from a state of defining a default position, wherein a second operating body of the release operation member removes the memory member from the state of defining the default position before a first operating body of the release operation member releases the lock mechanism as the release operation member is operated, and thereafter, the first operating body moves relatively to the second operating body, which is left in a state of removing the memory member from the state of defining the default position, until the first operating body releases the lock mechanism, and wherein an amount of relative movement between the first operating body and the second operating body is elastically absorbed.

A vehicle slide rail device including a release operation member which is configured to release a lock mechanism and slide together with a memory member in a slide direction by removing the memory member from a state of defining a default position; and a memory operation member which is configured to release the lock mechanism and maintain the released state while maintaining the memory member in the state of defining the default position, wherein the memory member has a receiving structure configured by an elastic structure by which the memory member is normally biased so as to maintain the state of defining the default position, and the memory member is pushed and tilted against the biasing by the movement of the release operation member, which is in an operated state, toward a predetermined operation position so that the release operation member is received into the predetermined operation position.

A vehicle slide rail device including a memory operation link which is configured to release a lock mechanism while leaving a memory member in a state of defining a default position, a holding link which is configured to, in response to an operation of the memory operation link, be engaged with the memory operation link by being biased and hold the memory operation link in a release operated position, a detection member which is configured to come into contact with a trigger member installed and be moved so as to release the holding state of the memory operation link at the release operated position, and a variable structure which is engaged with the pressing portion of the holding link and is configured to change a position where the pressing portion is arranged in the holding link according to a movement of the memory operation link.

A seat slide device includes lower rails and upper rails both formed substantially symmetrical bilaterally across a center in a width direction, and lock mechanisms on both sides of the upper rails to be engaged with the lower rails to lock them. An entire structure combining the lower rails, the upper rails and the lock mechanisms is substantially symmetrical forward, backward, and bilaterally, and a force applied to the lower rails and the upper rails can be absorbed substantially evenly forward, backward, and left and right. Since the lock mechanisms have an elastic lock member in a substantially center part in a longitudinal direction, the lower rails and the upper rails are elastically deformable for reduction of a biased load at a time of locking, improvement in vibration absorption characteristic, and the like, and a plate thickness of each material can be made thinner than conventional for weight reduction.

A longitudinal adjustment device for a motor vehicle seat has two pairs of rails. It includes a locking device for each pair of rails. It has a common actuating unit for the two locking devices, the unit interacting with both locking devices and includes a handle. The actuating unit has an electric drive motor, a gearbox which is connected to the electric drive motor, an actuator and preferably a setting unit.