Patent ID: 6690548
Filing Date: 2004-02-10
Classification: G11B

Abstract:
A ramp for use in an information recording disk apparatus having a plurality of suspension arms, the ramp comprising:at least two guiding parts individually formed for each suspension arm and made of a polymeric material having a small friction coefficient for guiding each suspension arm by sliding into an accommodation zone; and a guide supporting member made of a material having a thermal expansion coefficient smaller than that of the polymeric material of the at least two guiding parts for supporting each guiding part at a predetermined position, wherein the guide supporting member is made of a metallic plate, wherein the guide supporting member has first engagement parts, the first engagement parts being located in zones to be contacted with the associated guiding parts and not in contact with associated recording disks, the first engagement parts being engaged with the associated guiding parts at such positions that distances to front end edges of the guiding parts from said first engagement parts become shortest, each of the at least two guiding parts has a second engagement part provided with an anti-lean support part so that opposing support surfaces of the guiding parts are not mutually linked, and when the second engagement part is engaged in the associated first engagement part, the guiding part guides the suspension arm at a suitable position; and wherein no bridging means made of the same material as the at least two guiding parts for linking the opposing support surfaces of the at least two guiding parts is provided at least between the front end edges of the at least two guiding parts and the second engagement parts.