Patent ID: 6966699

Claim:
A dynamic pressure bearing device, comprising: a rotating portion including a rotating shaft member disposed at a rotation center and a ring-shaped member fixedly fitted to an outer peripheral surface of this rotating shaft member; a fixed portion including a first member disposed on one end surface side of said ring-shaped member in terms of a thickness direction and a second member disposed on the other end surface side; a thrust bearing portion including respective facing surfaces of said ring-shaped member and said first member, an operating oil for dynamic pressure generation filled in a first gap formed between these facing surfaces, respective facing surfaces of said ring-shaped member and said second member, and an operating oil for dynamic pressure generation filled in a second gap formed between these facing surfaces; a journal bearing portion including respective facing surfaces of said first member and/or said second member and said rotating shaft member, and an operating oil for dynamic pressure generation which is filled in a third gap formed between these facing surfaces; a spacer, which is disposed between said first member and said second member on an outer periphery side of said ring-shaped member, having an equal thickness to that of said ring-shaped member; and a metal leaf, which is disposed between said first member and said second member on the outer periphery side of said ring-shaped member, having a thickness corresponding to a total value of width dimensions of said first and second gaps, wherein said spacer and said metal leaf have front and rear surfaces applied with no adhesive.