Rotating device

摘要

A rotating device includes a hub on which a magnetic recording disk is to be mounted, a base supporting the hub in a freely rotatable manner through a fluid dynamic bearing, a stator core which is fixed to the base, and which includes an annular portion and multiple salient poles extending therefrom, coils wound around the respective salient poles, and a flexible printed board transmitting electrical power to the coils. A drawn wire of the coil is electrically connected with the flexible printed board at a connection position avoiding a location right below the coil where the drawn wire is drawn.

主权项

1. A rotating device comprising:
a hub including a mount portion on which a recording disk is to be mounted; a base including a sheet-metal bottom formed of an aluminum plate or a steel plate, and supporting the hub in a freely rotatable manner through a fluid dynamic bearing; a core fixedly supported by the sheet-metal bottom, and including an annular portion and a plurality of salient poles extending from the annular portion; coils wound around the plurality of salient poles, respectively; and a wiring structure transmitting electric power to the coils, wherein: the wiring structure comprises a wiring substrate fixed to the sheet-metal bottom, and a drawn wire from the coil electrically connected with a connection portion of the wiring substrate; and the connection portion is provided at a location distant from the coil in a circumferential direction, and the drawn wire includes a loosen portion in an axial direction and in the circumferential direction so as to have a play.