A seat recliner for a vehicle includes parts which are respectively used in opposite sides of a seat and compatible with each other. The seat recliner includes: a first flange having guide parts, guide spaces, and a first through hole; a plurality of lock gears having a guide protrusion; a lock cam having a second through hole; a control part having a third through hole and a guide slit; and a shaft penetrating through the first through hole, the second through hole, and the third through hole so that the shaft rotates with the lock cam and the control part.

A child safety seat includes a seat portion, a backrest assembly connected with the seat portion and including a first and a second portion slidably connected with each other and a third portion slidably connected with the second portion, and a backrest adjusting system carried with the backrest assembly and configured to provide a first stage of height adjustment where the first and second portions are locked with each other and the third portion is movable relative to the first and second portions for adjustment, and a second stage of height adjustment where the second portion is locked with the third portion and unlocked from the first portion so that the second portion and the third portion are movable in unison relative to the first portion for adjustment.

The present invention relates to a reclining device (1) for a vehicle seat of the kind comprising a first plate carrying an internal gear (5) and a second plate carrying an external gear (11) configured to cooperate with the internal gear. The reclining device includes a first and second wedge elements (17a, 17b) for exerting a wedge effect and preventing accidental, undesired rotation of the external and internal gears relative to each other. The reclining device (1) further comprises a lock spring (21). According to the invention the lock spring (21) comprises a wedge engaging element (35) that can be brought to abut and engage a lock spring abutment surface (37a, 37b) of a wedge element. Thanks to this arrangement, the lock spring directly interacts with the wedge elements and directly restricts self-rotation of said wedge elements, which avoids any loss of force and function between said lock spring and said wedge elements.

A seatback recliner system for a vehicle seat including a seat bottom and a seatback is provided. The system includes a latch mechanism movable between a latched state where the latch mechanism holds the seatback in a fixed angular position relative to the seat bottom and an unlatched state where the seatback is angularly movable relative to the seat bottom. A handle is movable between a rest position where the latch mechanism is disposed in the latched state and an actuated position where the latch mechanism is disposed in the unlatched state, in response to the handle receiving an actuation load from a user. A handle extension member is releasably mounted to the handle by a coupler that disengages the handle extension member from the handle such that the handle remains disposed in the rest position relative to the latch mechanism.

A lock mechanism for controlling a rotating component including an outer shaft attachable to a stationary component and having a slotted ring defining capture slots and an interior annular space, a control ring having a first end disposed in the annular space, an inner shaft attachable to a rotating component configured to rotate relative to the stationary component, and the inner shaft engaged with a second end of the control ring, a first collar rotatably disposed around the slotted ring, the first collar having a plurality of release recesses, and a plurality of first bearings respectively retained within the capture slots beneath the first collar. In a first rotational position of the first collar, the plurality of release recesses align with the capture slots to rotationally disengage the rotating and stationary components. In a second rotational position of the first collar, the plurality of release recesses misalign with the capture slots to rotationally engage the rotating and stationary components.

A seat reclining brake device for a vehicle includes a socket housing having an accommodating space, a locking plate inserted into accommodating space and coupled to a rotating shaft, a fixing portion formed at a position facing the locking plate and the socket housing, engaged with each other to block a relative rotation of the locking plate and socket housing or disengaged with each other, an elastic body inserted into accommodating space to apply an elastic force to locking plate in the direction in which the fixing portion is engaged, and a lever that is rotatably fastened to socket housing and includes a fixing release portion extending toward socket housing, having an inclining portion, and when the lever is rotated, moving along an inclining portion of the locking plate in the direction opposite the direction in which the elastic body applies the elastic force to disengage the fixing portion.

In this vehicle seat reclining device, the annular protrusion of a ratchet has a first region, a second region, and a third region, which are arranged circumferentially, and the outer side surface of the ratchet has a fourth region. The protrusion is shaped so that the third region extends further radially outward than the second region. As a result, the portion of the fourth region, which corresponds to the third region, extends further radially outward than the portion of the fourth region, which corresponds to the second region.

Technologies are described for assemblies to recline a seat. The assemblies may comprise a shaft, a threaded end at a first end of the shaft, a Stroke limiter, a seat back mounting, a mounting fastener, an energy absorber, and at least one locknut. A first end of the Stroke limiter may be attached to a second end of the shaft. The seat back mounting may be attached to a second end of the Stroke limiter and the mounting fastener. The energy absorber may be a kinetic energy absorbing element and the shaft may pass through the energy absorber. The locknut may be configured to secure the shaft of the seat recline assembly to the seat frame mounting with the end of the shaft attached to the Stroke limiter on a first side of the seat frame mounting and the energy absorber on a second side of the seat frame mounting.

A seatback recliner system for a vehicle seat including a seat bottom and a seatback is provided. The system includes a latch mechanism movable between a latched state where the latch mechanism holds the seatback in a fixed angular position relative to the seat bottom and an unlatched state where the seatback is angularly movable relative to the seat bottom. A handle is movable between a rest position where the latch mechanism is disposed in the latched state and an actuated position where the latch mechanism is disposed in the unlatched state, in response to the handle receiving an actuation load from a user. A handle extension member is releasably mounted to the handle by a coupler that disengages the handle extension member from the handle such that the handle remains disposed in the rest position relative to the latch mechanism.

A recliner mechanism includes first, second and third locking plates and a fastener. The first locking plate has a first inner diametrical surface having first teeth formed thereon. The second locking plate has a second inner diametrical surface having second teeth formed thereon. One or both of the first and second locking plates may include an aperture extending therethrough. The third locking plate has an outer diametrical surface having third teeth formed thereon. Some of the third teeth are meshingly engaged with some of the first teeth and some of the second teeth. The fastener may extend through the aperture and is attached to one of a seatback and a seat bottom.