A top pole piece of a voice coil motor (VCM) is attached to a hard disk
drive cover without screw fasteners and with minimal loss of VCM magnetic
flux capacity. A pair of leaf springs are supported at both ends, rather
than by cantilever, to more uniformly distribute mechanical stress
throughout the springs so that less space is required to achieve the same
transverse load as a cantilevered spring of the same profile. The smaller
space envelope required by this design minimizes the loss of magnetic
flux capacity of the VCM. Each leaf spring has two integral legs, central
portions of which are rigidly fastened to the drive cover. The end of
each leg opposite the central portion applies a force against the cover
in the assembled disk drive.