A seat recliner for vehicles includes a mobile flange provided such that an upper part thereof is open and configured to define a seating space through a bottom surface and a side surface and to have an internal gear formed along an inner side of the side surface, and a support groove formed between upper ends of the internal gear and the side surface, a gear plate inserted into the seating space of the mobile flange, and configured to have an external gear formed along an outer side of a side surface of the gear plate, and a support configured to extend outwards from an upper end of the external gear and located in the support groove, and a retainer configured to cover both upper parts of the mobile flange and the gear plate, and fixed to an upper end of the mobile flange.

A swash-plate-type gearing for adjustment devices includes a housing; an outer part, which has an inner toothing concentric with a joint axis; and an inner part with an outer toothing concentric with an eccentric axis, which runs parallel to the joint axis, offset by an off-centre distance. The gearing also includes an engagement region, in which the outer toothing is engaged with the inner toothing and which is located on a straight line intersecting the joint axis and eccentric axis, in each case at a right angle, with the eccentric axis lying on this straight line between the joint axis and engagement region; and a free space located 180° opposite the engagement region and on the straight line, in which free space the outer toothing is disengaged from and at a distance from the inner toothing. A locking part is provided having a locking region located in the free space.

A seat back assembly including a pultrusion reinforcement and a seat back frame formed of a resin material, the seat back frame is only partially overmolded onto the pultrusion reinforcement such that the pultrusion reinforcement is configured to be visually inspected through a plurality of openings formed in the seat back frame.

Proposed is a vehicle recliner including a mobile flange including a support part located in the center of a placement space and configured to protrude upwards from a lower surface thereof, the support part being formed in a multi-step structure having a different outer diameter for each step, a cam having a corresponding step formed thereon, the corresponding step corresponding to the multi-step structure of the support part, and a gear plate eccentrically pressed by the cam so that an external gear thereof meshes with an internal gear of the mobile flange.

A vehicle seat comprising a seat part, an adjustable backrest part attached to the seat part, and a floor assembly supporting the seat part and arranged on a vehicle floor. The seat part is connected to the floor assembly in a pivotal manner about a first axis, and the backrest part is connected to the seat part in a pivotal manner about a second axis. The vehicle seat has a first adjusting device powered by an electric motor for pivoting the seat part relative to the floor assembly about the first axis and a second adjusting device powered by an electric motor for pivoting the backrest part relative to the seat part about the second axis.

An automobile seat and an automobile comprising same, the automobile seat comprising a seat base, a seat back and a seat back adjusting mechanism; the seat back adjusting mechanism comprises a rotating part which is disposed at the lower end of the seat back; the rotating part rotates about the rear end part of the seat base to enable the angle between the seat back and the seat to be changed, and the center of rotation of the rotating part is located below the upper end surface of the seat base. A small step difference may be formed between the lower end part of the seat back and the upper end surface of the seat base when the seat back rotates, and a step difference may even be avoided. The lower end part of the seat back basically does not abut against and press the back of a passenger.

A zero-gravity seat comprises a seat base, a seat back, a front support frame, and a rear support frame. Upper ends of the front support frame and the rear support frame are respectively hinge-connected to front and rear ends of the seat base. Lower ends of the front support frame and the rear support frame are respectively hinge-connected to a seat mounting base. A lower end of the seat back can rotate around a rear end portion of the seat base. When the seat back and the seat base rotate in a linked manner, a small step difference or even no step difference is present between a lower end portion of the seat back and the upper end surface of the seat base such that the back of the occupant conforms to the seat back, thereby ensuring the comfort of a ride.

A recliner assembly for a vehicle seat may include a pair of recliner hearts and a cross rod. Each of the recliner hearts includes a first plate and a second plate that is selectively rotatable relative to the first plate to recline a seatback relative to a seat bottom of the vehicle seat. The cross rod extends between the recliner hearts and is received in hubs of the recliner hearts. The cross rod transmits torque between the hubs. The cross rod includes ridges that are angularly spaced apart from each other. Each of the ridges includes a first sidewall, a second sidewall, and an end wall extending between the first and second sidewalls. The first and second sidewalls are defined by first and second axes that extend radially outward. The first and second axes are angled such that they do not converge with each other as they extend radially outward.

A recliner heart includes a first locking plate, a second locking plate, a hub, a pair of wedges, a first biasing member, and a second biasing member. The first locking plate includes first teeth. The second locking plate is rotatable relative to the first locking plate and includes second teeth. The first biasing member is configured to apply a first biasing force to the wedges. The second biasing member is configured to apply a second biasing force to the wedges. The hub is rotatable between a first position in which the first and second biasing forces are applied to the wedges to restrict rotation of the second locking plate relative to the first locking plate, and a second position in which the first biasing force applied to one wedge of the wedges is reduced to allow rotation of the second locking plate relative to the first locking plate.

Proposed herein is a reclining apparatus for a seat, which secures coupling between a cap and a gear plate through a uniform position adjustment of the cap when the cap of a recliner is assembled, secures operation performance between components, and prevents a bearing from being deformed and separated due to an external force.