Patent ID: 6938265

Claim:
A turntable for a disk storage medium, the turntable comprising: a disk mounting section that includes a disk mount surface, a center boss and an inner side surface, the disk mount surface being used to mount the disk storage medium thereon, the center boss having an outer side face that engages with a center hole of the disk storage medium, the inner side face defining a space that has a center axis aligned with that of the center boss; a shaft center boss includes an outer side face and a hole into which a rotating shaft is inserted so as to transmit a driving force to, and rotate, the disk storage medium; and a plurality of generally linear ribs extending radially for joining the outer side face of the shaft center boss and the inner side face of the disk mounting section together so that multiple through holes are formed between the outer side face of the shaft center boss and the inner side face of the disk mounting section, the plurality of ribs being sufficiently rigid so that the ribs do not deform during operation of the turntable, wherein the disk mounting section, the shaft center boss, and the plurality of ribs are integrally molded out of one of resin and metal.