A recliner mechanism for a vehicle seat may include a guide plate, a locking plate, a pawl, an actuator hub, and a coil spring. The guide plate includes a recess and a projection. The locking plate includes a surface having teeth formed thereon. The pawl is movable in the recess between a secure position in which the pawl is engaged with the teeth of the locking plate to restrict relative rotation between the guide plate and the locking plate and a release position in which the pawl is disengaged from the teeth of the locking plate to allow relative rotation between the guide plate and the locking plate. Rotation of the actuator hub causes corresponding movement of the pawl between the secure position and the release position. The coil spring includes a first end engaging the actuator hub and a second end that hooks the projection of the guide plate.

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.

A recliner according to one aspect of the present disclosure includes a plate-shaped ratchet, at least one pawl, a plate-shaped guide member, and a ratchet seating portion. The ratchet seating portion is provided on the guide member to be positioned on an inner peripheral side of a second flange and between two guide walls adjacent to each other in a circumferential direction on the guide member. The ratchet seating portion protrudes toward the first flange of the ratchet and is configured to come into sliding contact with a tip of the first flange.

A recliner according to one aspect of the present disclosure includes a plate-shaped ratchet, at least one pawl, a plate-shaped guide member, and a ratchet seating portion. The ratchet seating portion is provided on the guide member to be positioned on an inner peripheral side of a second flange and between two guide walls adjacent to each other in a circumferential direction on the guide member. The ratchet seating portion protrudes toward the first flange of the ratchet and is configured to come into sliding contact with a tip of the first flange.

A recliner heart includes a housing member, a locking plate and a pawl. The housing member includes a plate surface having a first recess and a second recess. The locking plate includes a surface having teeth formed thereon. The pawl is movable in the first recess between a secure position in which the pawl is engaged with the teeth of the locking plate and a release position in which the pawl is disengaged from the teeth of the locking plate. The pawl includes a boss slidably received in the second recess. A first lateral side of the boss abuts against a sidewall of the second recess upon an impact event.

A locking mechanism includes a housing, a cam disposed within the housing, and a plurality of pawls disposed within the housing. The housing includes a first plate and a second plate received by the first plate. The second plate includes a peripheral lip having an interior face that defines a plurality of teeth. Each of the plurality of pawls include first teeth positioned at opposing ends thereof and second teeth positioned between the first teeth. Each of the first teeth have a first flat face and a second flat face. The first teeth have a different profile than the second teeth. The cam is configured to engage with the plurality of pawls to reposition the plurality of pawls from a first position where the plurality of pawls do not engage with the second plate and a second position where the plurality of pawls engage with the second plate.

A vehicle seat, in particular a motor vehicle seat, having a first structural part (4), a second structural part (6) and at least one fitting (10) that can be locked and unlocked, the fitting (10) having a first fitting part (11), which is at least indirectly connected to the first structural part (4), and a second fitting part (12), which is at least indirectly connected to the second structural part (6). When the fitting (10) is unlocked, an angular position of the second structural part (6) relative to the first structural part (4) can be varied about an axis (A). In at least one angular position of the second structural part (6) relative to the first structural part (4), a spring element (100, 100.1, 200) braces the first fitting part (11) and the second fitting part (12) with respect to each other in the radial direction.

A seat reclining device for a vehicle is configured such that an operating surface section and a projection of a pole are disposed at locations separate from each other along the radial direction of a body surface section, and are half-punched from the body surface section in one direction along the axial direction so as to form projections. A pressed surface section of the pole is provided on an edge surface of the body surface section formed on the other side in the axial direction of the operating surface section along with the half-punched projection of the operating surface section.

The recliner mechanism includes a housing plate, a recliner heart and an encapsulating ring. The recliner heart is mounted to the housing plate and operable in an unlocked state permitting relative rotation between a seatback and a seat bottom and a locked state preventing relative rotation between the seatback and the seat bottom. The encapsulating ring is attached to the housing plate.

A seat recliner assembly for a vehicle may include first and second recliner hearts, a hand lever, and a cross member. The first recliner heart may be mounted to a bracket. The second recliner heart may be mounted to another bracket. The hand lever may be mounted to the first recliner heart and may be rotatable relative to the brackets to move the first recliner heart between a locked state and an unlocked state. The cross member may be connected to the first and second recliner hearts and may transmit torque from the hand lever to the second recliner mechanism to move the second recliner heart with the first recliner heart between the locked and unlocked states. The cross member may include an aperture extending through an entire longitudinal length of the cross member.