A vehicle seat is provided. The vehicle seat comprises construction elements that are movable relative to one another and at least one force transmission element which transmits activation forces and/or stress forces that result from the use of the vehicle seat from one construction element to the other. The force transmission element by way of at least one joint is connected to both construction elements, and conjointly with the at least one joint is an integral component part of at least one of the two construction elements.

A front upper support surface and a rear upper support surface facing an upper surface of a rear end of an operation handle are provided in a lock release lever with a gap between the front upper support surface and the rear upper support surface in the vehicle front-rear direction, and front lower support surfaces are provided below the front upper support surface. An upper rail is provided with a rear lower support surface, which is positioned below a rear upper support surface. A clearance is provided between the front lower support surface and a lower surface of a rear end of the operation handle, and a clearance is provided between the rear lower support surface and the lower surface of the rear end of the operation handle.

A lock assembly for a vehicle seat includes a lever that has a body and a retention tab that extends from the body, a biasing member that is operably coupled to the body of the lever, an engagement member that is proximate to the lever, and an inertia member that has a weighted head and a retention hook. The inertia member is operable between a first position and a second position.

A rail for a vehicle seat having first and second sliding rail members driven by a motorized drive mechanism. The rail further comprises a mechanical lock actuated by a relative movement between the motorized drive mechanism and the second rail member in the event of an accident.

A sliding device for a vehicle seat is provided. The sliding device includes a pair of parallel slideways, each of which comprises a lower rail, an upper rail slidably mounted to the lower rail and a latch for allowing/preventing a movement of the upper rail relative to the lower rail. A releasing member is provided for driving the latches to a position in which the upper rails are free to move relative to the lower rails. Each latch has a rear portion which is bent into a “U”-like shape and comprises a lower leg carrying latching elements configured to cooperate with corresponding latching elements provided in the lower rail and an upper leg configured to engage the releasing member. The design of the latches improves the reliability of the sliding device.

Provided is a sliding device which can avoid unintended locking release without depending on an excessive engagement force of an engagement member. The sliding device includes a lock mechanism that locks an upper rail to a lower rail. The lock mechanism includes: an engagement member that shifts in the upper rail between a locking position and a release position; a first urging member that gives an urging force to the engagement member in a direction from the release position to the locking position; and an operation member for shifting the engagement member from the locking position to the release position. The operation member comprises a shift restrictor that keeps the engagement member from shifting to the release position when the engagement member is in the locking position.

A lock assembly for a vehicle seat includes a lever that has a body and a retention tab that extends from the body, a biasing member that is operably coupled to the body of the lever, an engagement member that is proximate to the lever, and an inertia member that has a weighted head and a retention hook. The inertia member is operable between a first position and a second position.

Provided is a seat sliding device. The seat sliding device comprises a fixed-side rail, a movable-side rail, a lock portion, an elastically deforming portion, and a releasing member. The lock portion is displaceable between a restraint position and a release position. The elastically deforming portion comprises: a linear portion that is an elastically deformable portion extending in a direction approximately parallel to a longitudinal direction of the movable-side rail; and an engaging portion protruding from an extending-direction leading end portion of the linear portion in a direction approximately perpendicular to an extending direction of the linear portion. The releasing member comprises: a first engaged surface that is contactable with the engaging portion from one end side in the extending direction; and a second engaged surface that is contactable with the engaging portion from the other end side in the extending-direction.

Provided is a seat sliding device. The seat sliding device comprises a fixed-side rail, a movable-side rail, a lock portion, an elastically deforming portion, a releasing member, and a restricting portion. The movable-side rail comprises an open-sectional portion including two side walls and a lid wall. The lock portion is displaceable between a restraint position and a release position. The releasing member is provided between the elastically deforming portion and the lid wall. The restricting portion is configured to provide a space through which an insertion-side end of the releasing member is insertable between the elastically deforming portion and the lid wall.

A release device for the upper rail and the lower rail of a longitudinal seat adjustment system of a motor vehicle seat, the release device having a lever rotatably supported on the upper rail of the seat. An end of the lever interacts with the locking means and optionally releases the locking means. A handle is provided at the other end. If the handle is operated, the lever moves relative to the upper rail from a passive position to a release position and moves the locking means from a locking position to a releasing position. So the release device automatically moves into a passive position of the release device, a spring element is provided, which preloads the lever into the passive position of the lever. The spring element additionally supports the lever on the upper rail.