Supporting device of a shaft drive of a magnetic record and reproduction device

Claim 1

A supporting device for supporting a drive for rotating a disc contained in a disk cassette inserted in a cassette holder of a magnetic recording and reproduction device, on a base of the recording and reproduction device wherein said drive includes a motor-driven spindle vertically extending through the base for rotation relative to the base and having a hub secured to an upper end of said spindle at an upper side of said base and a pulley secured to a lower end of the spindle at an underside of the base and rotated by a motor; the supporting device comprising bearing means fitted in said base and rotatably supporting said spindle, said pulley being spaced from the underside of said base to form a space therebetween; and a curved plate surrounding said spindle and positioned in said space, said curve plate being formed of elastic material and having radially outwardly extended portions; said base being formed with a concave recess on the underside thereof around said spindle, said radially extended portions of the curved plate engaging said concave recess so that said curved plate normally presses down said pulley to thereby press said hub against the upper side of the base and prevent the spindle against axial movement relative to the base.