Abstract: An automobile seat in which spaced apart side brackets of a seat back are individually faced to spaced apart side brackets of a seat cushion, a pivot shaft is penetrated through the brackets and bridged between the brackets, and reclining lock devices are assembled on the axis of the pivot shaft to the side brackets, whereby the seat back is held upright such that the angle of the seat back relative to the seat cushion is adjustable and that the seat back is reclinable forward and rearward, and in which the seat back is urged by return spring members to the upright direction. The spring members comprise first and second torsion bar springs that are arranged in proximity to the pivot shaft. The springs are engaged at both end portions thereof with corresponding side brackets in such a manner that the springs cross each other.

Abstract: An automobile seat in which spaced apart side brackets of a seat back are individually faced to spaced apart side brackets of a seat cushion, a pivot shaft is penetrated through the brackets and bridged between the brackets, and reclining lock devices are assembled on the axis of the pivot shaft to the side brackets, whereby the seat back is held upright such that the angle of the seat back relative to the seat cushion is adjustable and that the seat back is reclinable forward and rearward, and in which the seat back is urged by return spring members to the upright direction. The return spring members comprise a first torsion bar spring and a second torsion bar spring that are arranged in the proximity of the pivot shaft. The torsion bar springs are engaged at both end portions thereof with corresponding side brackets in such a manner that the torsion bar springs are crossed with each other.