The time required to complete current-to-target state transitions of a plurality of movable portions constituting a seat is shortened. A seat unit 1 includes an occupant support portion S1, a plurality of movable mechanisms respectively moving a plurality of parts constituting the occupant support portion S1, and an ECU 40 controlling respective operations of the plurality of movable mechanisms. The ECU 40 causes each of the plurality of movable mechanisms to undergo a transition from a current state to a target state and the plurality of movable mechanisms have a first movable mechanism requiring a longest time for the transition. The ECU 40 causes the transitions of the plurality of movable mechanisms other than the first movable mechanism to be completed by completion of the transition of the first movable mechanism from the current state to the target state.

The present disclosure provides a retractable car seat that is folded and stowed in a vehicle. The retractable car seat includes: a body configured to be folded or unfolded; a frame movably connected to the body to support the body such that the body is configured to be folded or unfolded; a support having an end connected to a lower portion of the body or the frame and another end movably connected to a floor of the vehicle, being able to move forward and backward in the vehicle, and having a length that can be vertically adjusted; and a rail disposed on the floor of the vehicle and having the support inserted therein, thereby functioning as a path in which the support is moved.

A method for manufacturing a vehicle seat backrest comprises the steps of: providing first and second uprights of a backrest frame and a support member of an upper backrest adjustment device; positioning the first upright partly facing a first side face of the support member and the second upright partly facing a second side face of the support member; moving the first upright relative to the second upright along a transverse direction of the support member, in order to sandwich the support member such that the support member of the upper backrest adjustment device is mounted on the first and second uprights of the backrest frame so as to pivot about a transverse axis.

The invention relates to a vehicle seat having a backrest which comprises a backrest part and a backrest base element, the backrest part comprising a middle backrest element which is arranged pivotably on the backrest base element, wherein the backrest part comprises two lower backrest side elements and two upper backrest side elements, which are each mechanically coupled to the middle backrest element, wherein the two lower backrest side elements are arranged pivotably on the backrest base element, wherein at least one joint device is provided in each case between a lower backrest side element and an upper backrest side element, wherein a lower backrest side element and an upper backrest side element are each arranged at an angle α.sub.L, α.sub.R to one another, wherein pivoting of the middle backrest element causes a change in the angle α.sub.L, α.sub.R, wherein the joint device comprises at least one first elastic element.

The invention relates to a vehicle seat having a backrest which comprises a backrest part and a backrest base element, the backrest part comprising a middle backrest element which is arranged pivotably on the backrest base element, wherein the backrest part comprises two lower backrest side elements and two upper backrest side elements, which are each mechanically coupled to the middle backrest element, wherein the two lower backrest side elements are arranged pivotably on the backrest base element, wherein at least one joint device is provided in each case between a lower backrest side element and an upper backrest side element, wherein a lower backrest side element and an upper backrest side element are each arranged at an angle α.sub.L, α.sub.R to one another, wherein pivoting of the middle backrest element causes a change in the angle α.sub.L, α.sub.R.

A seat (1) for transport vehicles with an articulated frame (2) capable of moving and changing shape between a neutral position N and a comfort position C, which comprises a headrest portion (21) mechanically linked by means of a connector (22) to a connection area of a backrest portion (23) that changes the height position thereof as the frame (2) moves from the neutral position N to the comfort position C thereof, the connector (22) being suitable for this change in height position to be transmitted, by means of mechanical drag, to the headrest portion (21), the headrest portion (21) being mechanically linked by means of an upper guide unit (31) of a guide system to the chassis (4) which is configured such that the inclination of both the headrest portion (21) and the backrest portion (23) increase the inclination thereof with respect to the vertical as the frame (2) moves from the neutral position N to the comfort position C thereof.

A seat assembly includes a five-bar linkage for moving the seat assembly between a plurality of positions in an automotive vehicle. A first link is rotatably coupled to a seat back at a second pivot point disposed coaxial to a first pivot point, and to a seat base defining a fifth link at a third pivot point. A second link extends axially between the first and second pivot points. A third link is defined by a lower seat back portion and a seat cushion and extends between the first pivot point and a fifth pivot point disposed adjacent a front portion of the seat cushion. A fourth link is rotatably coupled to the third link at the fifth pivot point and the seat base at a fourth pivot point. The seat assembly is capable of moving to both a pitched easy entry position and a stow flat to floor position.

A vehicle seat structure has a structural component which has an automatic belt unit. The automatic belt unit is arranged in a hollow space of the structural component and the structural component is connected in a positive-locking and/or materially engaging and/or non-positive-locking manner to at least one other component of the vehicle seat structure. The vehicle seat structure has a seat substructure and the structural component which has an automatic belt unit forms a component of the seat substructure. The structural component which has the automatic belt unit forms a seat frame side portion of the seat substructure A method for assembling such a vehicle seat structure is also provided.

A computer-implemented method for moving an occupant of a vehicle seat to open airway position after a vehicle crash event. The vehicle seat having a seat cushion, a backrest and a headrest. The method includes detecting occurrence of a vehicle crash event, and moving at least a portion of the backrest and/or headrest backwards and pulling an occupant of the vehicle seat backwards towards the backrest by powered retraction of a seat belt of the occupant by means of a seat belt retractor.

A child safety seat includes a backrest assembly including a first, a second, and a third portion slidably connected with one another, 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 so that the second and third portions are movable in unison relative to the first portion for adjustment. The third portion carries an adjustment latch that engages with the second portion for locking the third portion in position in the first stage of height adjustment and engages with the first portion for locking the third portion in position in the second stage of height adjustment.