A reduced-impact-and-recoil headrest that includes a ratchet mechanism, allowing components to incrementally translate with respect to each other. The reduced-impact-and-recoil headrest includes an exterior housing surface that is deformable, providing cushioning for a vehicle occupant's head. The headrest also includes an interior compartment within the housing, with the ratchet mechanism disposed within the interior compartment. The headrest is configured to decrease the force of a collision experienced by the occupant, thereby decreasing the likelihood and severity of traumatic brain injuries resulting from the occupant's head striking a stationary headrest. Instead, the reduced-impact-and-recoil headrest is configured to incrementally move with the occupant's head, providing an incremental cushion for the occupant's head. The ratchet mechanism also prevents the reduced-impact-and-recoil headrest from automatically translating back to its pre-impact position, thereby decreasing the occupant's risk of ligament tear and whiplash.

A locking device for a vehicle seat is disclosed. The locking device comprises at least one tolerance compensating element and a second damping element provided for damping the movement of a bolt element received in the locking device. The elements are spaced apart from one another in the direction of the action of force effected by the bolt element, such that under normal conditions the tolerance compensating element acts in a damping manner and the second damping element additionally provides a damping action under the action of high dynamic force.

An anti-rattle system for a passenger seat includes a foot pad. The foot pad includes an upper surface, a lower surface, and a protrusion extending outward from the lower surface of the foot pad. A method of securing a passenger seat with the anti-rattle system includes providing a seat track defining a track channel. The method further includes securing a leg assembly of the passenger seat to the seat track by adjusting the anti-rattle device such that a forward stud of the leg assembly engages track lips within the channel and the foot pad of the anti-rattle device engages an upper surface of the seat track. Adjusting the anti-rattle device includes positioning the protrusion in a track opening forward of the forward stud.

A height-adjustable headrest may have a base support element and a supporting element. The supporting element may be arranged in the base support element. The supporting element may be guidable in a longitudinally displaceable manner in an X direction. In order to form a guide, the basic supporting element may have a number of openings and the supporting element may have a number of guide parts. A shape of the number of openings may correspond to a shape of the number of guide parts.

An eccentricity prevention apparatus for a pumping device is configured to prevent the eccentric movement of rotating parts operating for moving a seat up and down. The eccentricity prevention apparatus includes: a clutch device provided inside a housing; and an elastic member providing an elastic restoring force to the clutch device in a direction compensating for eccentric movement of the clutch device tilted relative to a rotating axis thereof.

A vehicle seat having a drive device for driving a adjustment kinematics of the vehicle seat may have an adjustment arm, and a tensioning device. The drive device may have a pinion which can be rotated about a pinion rotation axis and which is in toothed engagement with a tooth segment of the adjustment arm. The tensioning device pretensions the adjustment arm so that the tooth segment is pretensioned in the direction of the pinion. The tensioning device has at least one sliding element which is in abutment with the adjustment arm. During an actuation of the height adjustment kinematics, the at least one sliding element slides along the adjustment arm. The sliding element is resiliently pretensioned by a resilient element.

A power slide includes a left slide and a right slide, each including a top rail, a bottom rail, a lead screw and an electric motor. The top rail is arranged above the bottom rail and is slidably connected to the bottom rail, and a notch is formed in a middle portion of the top rail. The lead screw is arranged above the bottom rail in parallel and has two ends fixedly connected to the bottom rail. The electric motor includes a housing, a rotor shaft and a stator shaft. The housing is mounted in the notch, the stator shaft is fixedly connected into the housing, the rotor shaft penetrates into the stator shaft and is rotatably connected to the stator shaft, and an interior of the rotor shaft is threadedly connected to the lead screw.

A hinge mechanism having first and second hinge flanges, a control device controlling the relative rotation of the first and second hinge flanges, a closure ring integrally secured to the second hinge flange and retaining the first flange against the second flange, and an external frame integrally secured to the second flange. The second hinge flange is integrally secured to both the external frame and the retaining ring by the same weld.

A pivoting system comprising a first hinge mechanism comprising a first frame and a second frame connected together by a first hypocycloidal gear, the first gear comprising a first eccentric cam, a first set of teeth, and a second set of teeth, the first eccentric cam having a first eccentricity, a second hinge mechanism comprising a first frame and a second frame connected together by a second hypocycloidal gear, the second gear comprising a second eccentric cam, a first set of teeth, and a second set of teeth, the second eccentric cam having a second eccentricity equal to the first eccentricity, a control shaft configured to drive the first eccentric cam and the second eccentric cam in rotation.

A seat track mechanism for installing beneath a vehicle seat in order to move the vehicle seat in the forward and backward directions includes a monotrack mechanism, to which a monopost structure and a single rail structure are applied. The seat track mechanism includes a structure for hook-engaging lower and upper rails constituting the mono track mechanism by hook guides. The single rail structure applied to the seat track mechanism is capable of not only reducing actuating force required for operation, but also preventing creation of excessive clearance upon stopping.