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 removable and/or mountable seat assembly includes a seat back and a seat pan that are pivotally connected to each other via a locking device and rotate about at least one common axis of rotation. The locking device is in mechanical communication with the seat back and the seat pan and is configured to lock the seat back and the seat pan relative to each other about the at least one common axis of rotation. The locking device is configured to selectively lock the seat pan and the seat back such that the seat back and the seat pan lie along the common plane forming the stretcher or selectively lock the seat pan and the seat back such that the seat back and the seat pan form a seat. Additionally, the seat back and the seat pan may be locked in yet another position allowing for the easy transport and/or storage of the seat assembly.

When reversing a direction in which an angle is adjusted by a first adjustment section and reversing a direction in which a posture is adjusted by a second adjustment section, a control section of a seat provides, before a timing at which a driving direction of a second driving section is reversed, a stop period for stopping the second adjustment section from adjusting the posture, and the control section causes the first adjustment section to carry out a preparation operation in advance during the stop period.

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 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.

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 vehicle seat comprises a seat part and a backrest, which are pivotally connected to each other via at least two swivel fittings, and the swivel fittings each have toothing rolling off on each other and are different in size.

A locking mechanism includes a housing, a pawl disposed within the housing, and a cam disposed within the housing. The pawl has a bottom profile include includes a first protrusion and a second protrusion. The cam includes a first lobe and a second lobe. The cam is configured to engage with the bottom profile of the cam to reposition the pawl between a first position and a second position. At least one of the first lobe or the second lobe of the cam is positioned between the first protrusion and the second protrusion of the pawl when the pawl is in the first position. The first lobe of the cam engages the first protrusion of the pawl and the second lobe of the cam engages the second protrusion of the pawl when the pawl is in the second position.