Magnetic head supporting mechanism for flexible double-sided magnetic disks

Claim 1

A magnetic head supporting mechanism comprising: a first magnetic head facing one side of a flexible double-sided magnetic disk which is adapted to rotate; a second magnetic head disposed to oppose said first magnetic head and facing the other side of said magnetic disk; a first movable member disposed on a side of said first magnetic head opposite to a side of said first magnetic head facing said magnetic disk and restrained to normal movement or up and down with respect to said one side of said magnetic disk; a second movable member disposed on a side of said second magnetic head opposite to a side of said second magnetic head facing said other side of said magnetic disc and retrained to normal movement or up and down with respect to said magnetic disk; first urging means for urging, via said first movable member, said first magnetic head into contact with said one side of said magnetic disk; a second urging means for urging, via said second movable member, said second magnetic head into contact with said other side of said magnetic disk, and gimbal-type supporting means for supporting said first and second magnetic heads in such a manner as to afford greater angular displacement of said magnetic heads in the pitching direction than in the rolling direction vis-a-vis said magnetic disk when in its operational state; each of said first and second urging means comprising a spring and collar for resiliently biasing said first and second movable members, respectively; and limiting members for restraining lateral excursion and up and down travel of each of said movable members and for enabling each said movable member to move exclusively in a direction substantially perpendicular to a plane defined by the sides of said magnetic disk so that controlled orthogonal contact between said opposed heads and said magnetic disk is ensured.