Abstract: A lumbar adjuster for use in a vehicle seat and including a wire frame, a lumbar mat, an adjustment mechanism, and an arbor. The wire frame configured to be fixed to a backrest and including a first lateral portion, a second lateral portion and a transverse portion extending therebetween. The lumbar mat configured to face towards a backrest cushion when the lumbar adjuster is assembled to the vehicle seat. The adjustment mechanism connected to and configured to move along the first and second lateral portions and including a lever arm and a gear train operatively connected to and operable to articulate the lever arm to move a portion of the lumbar mat towards and away from the backrest cushion. The arbor connected to the transverse portion of the wire frame and the adjustment mechanism to fix the adjustment mechanism relative to the transverse portion.

Abstract: A lumbar adjuster for use in a vehicle seat and including a wire frame, a lumbar mat, an adjustment mechanism, and an arbor. The wire frame configured to be fixed to a backrest and including a first lateral portion, a second lateral portion and a transverse portion extending therebetween. The lumbar mat configured to face towards a backrest cushion when the lumbar adjuster is assembled to the vehicle seat. The adjustment mechanism connected to and configured to move along the first and second lateral portions and including a lever arm and a gear train operatively connected to and operable to articulate the lever arm to move a portion of the lumbar mat towards and away from the backrest cushion. The arbor connected to the transverse portion of the wire frame and the adjustment mechanism to fix the adjustment mechanism relative to the transverse portion.

Abstract: A lumbar mat for a backrest structure for use in a vehicle seat, the lumbar mat adapted to be arranged between a lumbar support structure and a backrest cushion of the backrest structure, including a front surface adapted to face towards a backrest cushion of a backrest structure, when the lumbar mat is arranged in the backrest structure, a plurality of first spring elements arranged at the front surface of the lumbar mat, each of the first spring elements adapted to apply a first elastic force towards the backrest cushion via a first contact area of the first spring element, respectively, and a plurality of second spring elements, each of the second spring elements associated with a respective one of the plurality of first spring elements and adapted to apply a second elastic force towards the backrest cushion via a second contact area of the second spring element, respectively.

Abstract: A lumbar mat for a backrest structure for use in a vehicle seat, the lumbar mat adapted to be arranged between a lumbar support structure and a backrest cushion of the backrest structure, including a front surface adapted to face towards a backrest cushion of a backrest structure, when the lumbar mat is arranged in the backrest structure, a plurality of first spring elements arranged at the front surface of the lumbar mat, each of the first spring elements adapted to apply a first elastic force towards the backrest cushion via a first contact area of the first spring element, respectively, and a plurality of second spring elements, each of the second spring elements associated with a respective one of the plurality of first spring elements and adapted to apply a second elastic force towards the backrest cushion via a second contact area of the second spring element, respectively.