A child safety seat includes a seat portion, a backrest assembly connected with the seat portion, and a backrest adjusting system carried with the backrest assembly and including a lock. The backrest assembly including a first portion, a second portion slidably connected with the first portion, and a third portion slidably connected with the second portion. The lock includes a first latching part operable to lock and unlock the third portion with respect to the second portion, and a second latching part operable to lock and unlock the first portion with respect to the second portion, the second latching part being coupled to the first latching part so that the first and second latching parts are movable in unison relative to the backrest assembly.

A seat assembly is provided herein. The seat assembly includes a seat member having a support surface. A pair of seat member bolsters is disposed on opposing sides of the seat member. A seat base supports the seat member and has a wraparound sidewall that extends above a bottom portion of each seat member bolster.

A vehicle seat includes a seat base and a selectively vertically adjustable seatback coupled to the seat base. The selectively vertically adjustable seatback including a first frame component coupled to the seat base and a second frame component connected to the first frame component, the second frame component being shiftable relative to the seat base.

A back support includes an anchor plate attachable to a back frame of a wheelchair and a spanning plate securable to the anchor plate in a range of vertical positions to adjust a height of the back support. The spanning plate is secured to the anchor plate by a fastener secured through an aperture in the anchor plate and attached to a laterally extending bar selectively engageable with the spanning plate in a plurality of discrete vertical positions.

An apparatus can include a seat, a backrest, a base frame comprising wheels and an adjustment assembly. The adjustment assembly can be adjustable from a lowered position to a raised position. The adjustment assembly can include an actuator assembly, pairs of scissor legs, and a connector. The actuator assembly can include: an actuator positioned underneath the seat, where the actuator comprises an actuatable shaft; and biasers positioned underneath the backrest. In addition, the connector can be attached to the pairs of scissor legs and the actuatable shaft, the connector being configured to: compress the biasers upon extension of the actuatable shaft away from actuator; and decompress the biasers upon retraction of the actuatable shaft towards the actuator.

A seat assembly includes a seat frame, a back frame defining a back plane pivotally connected to the seat frame at a pivot joint, a back support slideably secured to the back frame, and a back support adjusting mechanism. The back support adjusting mechanism includes a first linking member coupling the back support to the seat frame and pivotable about the pivot axis, and a first slide member slideably supported by the back frame and operatively connected to the first linking member. A second slide member is affixed to the back support and slideably supported by the back frame. A second linking member operatively connects the first and second slide members. Pivoting movement of the back frame from the upright position to the reclined position slides the first slide member away from the pivot axis, causing the second linking member to slide the back support toward the pivot axis.

A vehicle seating assembly has a seat having a lower seat and a seatback extending upwardly from the lower seat. The seatback has a lower stationary seatback base portion having a seatback frame assembly, and an upper movable seatback hood module vertically adjustable relative the lower stationary portion. The upper movable seatback hood module has an upper seatback slide bracket, and a plurality of rail guides slidably engaging a rail. An electric motor drive unit engages a driven member to vertically adjust the upper movable seatback hood module relative the lower stationary portion when the electric motor drive unit is actuated.

A recreational vehicle has at least one seat device in the front region, which can be arranged in a driving position for driving the recreational vehicle and in at least one rest position different from the driving position. At least one upholstery extension is provided and the upholstery extension is designed in such a way that it fits into the at least one seat device at least in the rest position.

A car seat with a warning function includes a seat body having a seat cushion, plural adjusting posts, a wireless transmission module, a control unit and a warning element. The wireless transmission module is in wireless communication with an electronic device. When the adjusting posts are pushed by the seat cushion, the lengths of the adjusting posts are changed. If the control unit receives a body curve data from the electronic device and judges that the body curve data complies with a predetermined body data, the control unit changes the lengths of the adjusting posts according to the body curve information. Consequently, the shape of the seat cushion fits the body shape of the user. If the control unit judges that the body curve data does not comply with the predetermined body data, the control unit controls the warning element to output a warning signal.

A car seat with a warning function includes a seat body having a seat cushion, plural adjusting posts, a wireless transmission module, a control unit and a warning element. The wireless transmission module is in wireless communication with an electronic device. When the adjusting posts are pushed by the seat cushion, the lengths of the adjusting posts are changed. If the control unit receives a body curve data from the electronic device and judges that the body curve data complies with a predetermined body data, the control unit changes the lengths of the adjusting posts according to the body curve information. Consequently, the shape of the seat cushion fits the body shape of the user. If the control unit judges that the body curve data does not comply with the predetermined body data, the control unit controls the warning element to output a warning signal.