Abstract: A suspension assembly and an actuator having the same, which are of a hard disk drive (HDD). The suspension assembly includes a load beam coupled to an end of a swing arm of an actuator; a flexure attached to the load beam to support the slider; and a tip-tab which extends from a front end of the load beam to contact a ramp when the read/write head is parked, wherein a width of a contact part of the tip-tab that contacts the ramp is wider than other parts of the tip-tab. A width of a part of the tip-tab engaged with the load beam and a width of a front part of the tip-tab are smaller than the width of the contact part. The width of the tip-tab increases gradually from the front end of the load beam up to the contact part, and decreases gradually after the contact part.

Abstract: A ramp to park a read/write head includes a fixed portion fixed to a base member of the hard disk drive, and a supporting portion to contact and support the tip-tab of the suspension assembly and includes an inclined rail surface and a horizontal rail surface which extend in a moving direction of the tip-tab, wherein a rail boundary between the inclined rail surface and the horizontal rail surface is inclined with respect to a lengthwise axis of the tip-tab. The rail boundary can be a straight line inclined at an angle with respect to the lengthwise axis of the tip-tab, or can be curved toward the horizontal rail surface or the inclined rail surface.

Abstract: A supporting and damping structure of a hard disk drive (HDD) that includes a housing and a printed circuit board (PCB) coupled to the housing. The supporting and damping structure includes extension parts extending from at least both edges of the PCB beyond the housing; and support members supporting the extension parts so that the HDD does not directly contact an electronic device in which the HDD is installed. The support members include dampers formed of a viscoelastic material and coupled to the extension parts and/or lower supporters and upper supporters respectively disposed on a base and a cover of the electronic device.

Abstract: A suspension assembly and an actuator having the same, which are of a hard disk drive (HDD). The actuator includes a swing arm rotatably mounted on a base member; a suspension assembly elastically biasing a slider having a read/write head toward a surface of a disk; and a voice coil motor (VCM) rotating the swing arm so as to move the read/write head to a predetermined position on the disk. The suspension assembly includes a load beam coupled to an end of a swing arm of an actuator; a flexure attached to the load beam so as to support the slider; and a tip-tab which extends from a front end of the load beam so as to contact a ramp that is installed in the vicinity of the disk when the read/write head is parked, wherein a width of a contact part of the tip-tab that contacts the ramp is wider than other parts of the tip-tab.

Abstract: A ramp to park a read/write head includes a fixed portion fixed to a base member of the hard disk drive, and a supporting portion to contact and support the tip-tab of the suspension assembly and includes an inclined rail surface and a horizontal rail surface which extend in a moving direction of the tip-tab, wherein a rail boundary between the inclined rail surface and the horizontal rail surface is inclined with respect to a lengthwise axis of the tip-tab. The rail boundary can be a straight line inclined at an angle with respect to the lengthwise axis of the tip-tab, or can be curved toward the horizontal rail surface or the inclined rail surface.

Abstract: An arm plate coupled to a pivot bearing to closely contact an overmold and having a leading end portion where a head gimbal assembly (HGA) is attached when assembling a head stack assembly (HSA) of a hard disk drive (HDD), wherein a bending alleviation through hole is formed in a portion that overlaps and closely contacts an edge of the overmold, the head stack assembly with the arm plate, and the hard disk drive with the head stack assembly.