A reclining device cylindrical first member including an internal tooth and an opening surface on one side; a main pawl including an external tooth engageable with the internal tooth; a sub-pawl including an external tooth engageable with the internal tooth; a second member stacked on an opening surface side of the first member and rotatable relative to the first member. The second member includes a pawl guide to guide the main pawl/sub-pawl between a lock position and an unlock position. A cam between the first and second members is configured to push the main pawl and sub-pawl in a lock direction; and a second cam between the cam and the main pawl is pushed by the cam at the lock position to contact the main pawl and the pawl guide.

An occupant support adapted for use in a vehicle includes a seat bottom coupled to a floor of the vehicle and a seat back configured to pivot about a seat-back pivot axis relative to the seat bottom between an upright position and a folded-forward position. The occupant support further includes a seat-motion controller configured to control movement of the seat back relative to the seat bottom.

A recliner mechanism having a first plate, a second plate, and at least one pawl. The first plate has a first set of teeth. The second plate has a second set of teeth. The pawl that has a set of pawl teeth that engage the first set of teeth and the second set of teeth to inhibit rotation of the second plate with respect to the first plate.

A recliner heart for a vehicle seat recliner assembly may include a first plate, a second plate and one or more pawls. The first plate may define a recess. The second plate may include a first inner diametrical surface having first teeth formed thereon. The pawl may be slidably disposed in the recess between a secure position in which the pawl is engaged with a portion of the teeth of the second plate to restrict relative rotation between the first and second plates and a release position in which the pawl is disengaged from the portion of the teeth of the second plate to allow relative rotation between the first and second plates. One or both lateral sides of the pawl may include one or more slots.

A method for manufacturing a recliner mechanism may include movably attaching a first plate of a recliner heart to a second plate of the recliner heart, positioning a gap ring onto the first plate of the recliner heart, positioning an encapsulation ring around the first and second plates such that the gap ring is disposed axially between the first plate and the encapsulation ring, and removing at least a portion of the gap ring from between the first plate and the encapsulation ring to form a clearance gap between the first plate and the encapsulation ring.

A seat recliner for a vehicle may include: a fixing flange provided with multiple guide parts spaced apart from each other and having a guide groove formed along a locus having a predetermined distance from a center axis; and a rotary cam mounted on a center portion of the fixing flange, rotating about the center axis to press a locking gear such that the locking gear slides along the guide parts. In particular, the rotary cam includes: a first protrusion formed on a mount surface of the rotary cam, which is coming into contact with the fixing flange when mounted; and a second protrusion formed on a surface opposite to the mount surface and capable of engaging with a control plate. When the first protrusion is inserted into the guide groove, the guide groove guides a rotation of the rotary cam.

The present invention relates to an adjustment device for adjusting the inclination of the backrest (14) of a seat (10) of a vehicle, which allows to perform both quick adjustments of large angular amplitude and fine adjustments. According to a possible embodiment of the invention, the adjustment device comprises separate control elements (20, 22) for performing quick adjustments and fine adjustments, respectively, of the inclination of the backrest (14). According to another possible embodiment of the invention, the adjustment device comprises a single control element (20) for performing both quick adjustments and fine adjustments of the inclination of the backrest (14).

A discontinuous recliner for a vehicle seat is provided. The discontinuous recliner comprises one or more locking pawls and a single actuating element which is configured to drive the locking pawl(s) both from the locking position to the unlocking position and from the unlocking position to the locking position. Thanks to the provision of the single actuating element, the overall number of components of the discontinuous recliner is significantly reduced. This allows to obtain a discontinuous recliner which is lighter, easier to be assembled and more reliable.

Disclosed is a reclining device for a vehicle seat. The reclining device includes: a flange having internal teeth and a cylindrical-shaped flange protrusion; a gear plate having a through hole and external teeth to be partially engaged with the internal teeth of the flange in an eccentric state with the flange; an input device eccentrically positioned inside the through hole of the gear plate and configured of a rotating portion and a head portion; a wedge cam positioned between an the gear plate and the flange protrusion to maintain eccentricity of the gear plate; a support body supporting a load due to the eccentricity of the gear plate and transmitting a rotational force to the wedge cam; and an elastic portion positioned between the support body and the through hole to pressurize the wedge cam.

A first pole of this seat reclining device for a vehicle has a first limiting part, a second pole has a second limiting part, a second bracket has a first pole allowing part and a first pole restricting part. A first escape part is provided on the negative direction end of the second limiting part, and when the rotation angle of the second bracket to the first bracket moves from the angle at which the first limiting part engages with the first pole restricting part to an angle at which the first limiting part engages with the first pole allowing part, the negative direction end and the positive direction end come into contact, by means of the first escape part, in a direction inclined to the rotation direction.