Patent ID: 8051567

Claim:
A method of manufacturing a steering wheel, the method comprising: providing parts including a frame that is composed of a rim and spokes, an upper foam member that is fitted on the upper portion of the frame, a lower foam member that is fitted on the lower portion of the frame and contacts the upper foam member, and a leather cover that covers the upper foam member and the lower foam member; assembling the foam members by fitting the upper foam member and the lower foam member onto the upper portion and the lower portion of the frame; and attaching the leather cover by covering the outsides of the upper foam member and the lower foam member with the leather cover, wherein first circular grooves where at least one of the upper foam member and the lower foam member is fitted are formed along the circumference of the rim of the frame to prevent rotation of the foam members and reduce the weight of the frame, first circular protrusions where the first circular grooves are fitted are formed on the upper or lower foam member, protrusions are formed at the foam member that is fitted where the spokes are formed to cover portions of the spokes, a plurality of protrusions with a head are formed on the contact surfaces of the protrusions with the spokes, and a plurality of locking grooves where the protrusions are fitted and locked are formed in the spokes.