Patent ID: 7174625

Claim:
A method of forming an assembly jig used in assembling a dynamic pressure bearing device which comprises a fixed portion and a rotating portion supported rotatably by the fixed portion via a dynamic pressure bearing portion, and in which said rotating portion comprises a rotating shaft member disposed at a rotation center, said method comprising: disposing an abutting portion side member on an abutting portion side that abuts on a pressed member; disposing a pressure source side member closer to a pressure source side than the abutting portion side member, wherein the pressure source side is capable of changing the position thereof relative to the abutting portion side member; and sandwiching a resilient member between said abutting portion side member and said pressure source side member, said resilient member being disposed on an outer periphery side of said rotating shaft member or a prolonged position of said rotating shaft member in a state of surrounding said rotating shaft member or the prolonged position of said rotating shaft member, and said abutting portion side member including a rotating shaft member inserting portion into which said rotating shaft member is to be inserted.