| 摘要 |
PROBLEM TO BE SOLVED: To provide a swing arm assembly, in which the number of components is few, which is easily assembled and can reduce the production cost, and which can thereby further reducing the cost of a hard disk apparatus. SOLUTION: A supporting member consisting of a shaft 12 perpendicular to a casing base 7a of the hard disk drive apparatus, inner ring members 13a and 14a provide around the supporting member, and outer ring members 13b and 14b which surround the inner ring members and in which two lines of up and down ball lines 8 and 9 between the inner ring members and the outer ring members are disposed parallel are provided. A base part hole 2a of the swing arm 2 is engaged and fixed to the outer periphery surface of the outer ring members. |
