The present disclosure relates to a vehicle seat assembly. The vehicle seat assembly (1) includes a chassis and a backrest support (5). The backrest support (5) has a first torsion tube (11) for adjusting a recline angle; and the chassis has a second torsion tube (18) for adjusting height rise. The first and second torsion tubes (11, 18) are arranged concentrically about a pivot axis (A). The first and second torsion tubes are rotatable independently of each other about said pivot axis. The first torsion tube is rotatable to adjust the recline angle; and the second torsion tube is rotatable to adjust the rise height. The present disclosure also relates to a vehicle incorporating a vehicle seat assembly.

A vehicle seat assembly is provided and includes a base assembly, a seat frame assembly attached to the base assembly, and a seat tilt control mechanism attached to the base assembly and the seat frame assembly. Actuation of the tilt drive assembly adjusts a tilt position of the seat frame assembly with respect to the base assembly.

A vehicle seat including a seat cushion including a cushion body that supports buttocks of an occupant, and cushion side portions disposed on both seat width direction sides of the cushion body, a seatback including a back body that supports a back of the occupant, and back side portions disposed on both seat width direction sides of the back body, and an adjustment mechanism including at least one of a cushion adjustment mechanism that on actuation moves the cushion body in a seat up-down direction with respect to the cushion side portions and pivots the cushion body about an axis running along the seat width direction, or a back adjustment mechanism that on actuation moves the back body in a seat front-rear direction with respect to the back side portions and pivots the back body about an axis running along the seat width direction.

A vehicle seat including: a connection mechanism; a seat cushion connected to an interior structure of a vehicle via the connection mechanism and configured to be displaced between a first state and a second state at which the seat cushion is arranged at a position closer to a front part-side of the vehicle than at the first state; and a seat back, wherein a sitting surface of the seat cushion at the first state gradually inclines upwardly from the rear of the seat towards the front of the seat, and wherein the connection mechanism is configured to displace the seat cushion to the second state and move a front part-side of the seat cushion more downwardly than at the first state, whereby the sitting surface of the seat cushion is made more horizontal at the second state than at the first state.

An apparatus for adjusting lying posture in vehicle seats is connected between a lower side of a height adjusting mechanism of the seat and upper sides of upper sliding rails of the seat and comprises an upper fixed bracket, a front end execution mechanism, a front end supporting and driving mechanism and a rear end bracket assembly. The upper fixed bracket is provided with a front end fixed supporting rod, a left end and a right end of which are connected with a left fixed supporting rod and a right fixed supporting rod respectively; inner sides of the left fixed supporting rod and the right fixed supporting rod are connected with a left fixed bracket and a right fixed bracket respectively; and a connecting hole is formed in each of front parts and rear parts of the left fixed supporting rod and the right front end fixed supporting rod.

A device for adjusting a position of a seat for a purpose built vehicle for mobility services allows a seatback to be mounted on an inner wall surface of a vehicle body in an adjustable manner. The device also includes a seat cushion fixed on a floor panel in an adjustable manner. The device is capable of adjusting the seat to various desired positions such as a storage position for cargo loading, a general seating position, a position of a comfortable posture for relaxation, a bed position, and the like.

A seat adjustment mechanism for an adjustable seat assembly includes an arcuate tilt column; a lift column; a first tilt slider block detachably engaged to the lift column and slideably engaged to the tilt column for moving the lift column between a plurality of tilt positions; and a first lift slider block slideably engaged to the lift column for moving between a plurality of lift positions independent of the plurality of tilt positions. The slider blocks, the lift columns, the tilt columns and the cross brace may be made of dissimilar materials and/or are easily replaced with alternative components.

Provided is a vehicle seat that can absorb energy with a link while maintaining engagement of gears in a lifting device. One embodiment of the present disclosure is the vehicle seat including a seat cushion, a cushion frame supporting the seat cushion, and the lifting device configured to raise and lower at least a portion of the seat cushion. The lifting device includes a pinion gear held by the cushion frame, a sector gear engaged with the pinion gear, and the link to which the sector gear is fixed and which is rotatably coupled to the cushion frame. The link is made of a material with a lower yield stress than a material forming the sector gear.

A seat adjustment mechanism for an adjustable seat assembly includes an arcuate tilt column; a lift column; a first tilt slider block detachably engaged to the lift column and slideably engaged to the tilt column for moving the lift column between a plurality of tilt positions; and a first lift slider block slideably engaged to the lift column for moving between a plurality of lift positions independent of the plurality of tilt positions. The slider blocks, the lift columns, the tilt columns and the cross brace may be made of dissimilar materials and/or are easily replaced with alternative components.

A vehicle seat including: a connection mechanism; a seat cushion connected to an interior structure of a vehicle via the connection mechanism and displaced between a first state and a second state at which the seat cushion is arranged at a position closer to a front part-side of the vehicle; and a seat back, wherein the connection mechanism includes an arm part and an attaching part, wherein a sitting surface of the seat cushion at the first state gradually inclines upwardly from the rear towards the front of the seat, and wherein, by inclining the arm part more forwards than at the first state, the seat cushion is displaced to the second state and a front part-side of the seat cushion is moved more downwardly than at the first state, whereby the sitting surface is made more horizontal.