Dynamic pressure bearing device and method of manufacturing the same

In order to manufacture a dynamic pressure bearing device, there are provided a shaft member, and a thrust plate formed with a press-fitting portion into which the shaft member is press-fitted. At least two relief portions are formed in at least one of the press-fitting portion of the thrust plate a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZENISAWA HIROSHI, MARUMO HIROMASA, ISHIKAWA MASAYUKI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:In order to manufacture a dynamic pressure bearing device, there are provided a shaft member, and a thrust plate formed with a press-fitting portion into which the shaft member is press-fitted. At least two relief portions are formed in at least one of the press-fitting portion of the thrust plate and a part of the shaft member which corresponds to the press-fitting portion. The shaft member is press-fitted with the press-fitting portion such that the thrust plate extends perpendicular to an axial direction of the shaft member, while making the relief portions absorb press-fitting stress.