| 摘要 |
An object is to provide a carriage for a hard disk driving actuator, requiring fewer manufacturing steps, capable of inexpensive production, and capable of sufficiently increasing the bearing attaching strength. Another object is to provide a carriage plate capable of easily effecting highly accurate positioning of a plurality of carriage plates, high in rigidity, capable of reduction of thickness, and capable of sufficiently increasing the bearing attaching strength. A carriage comprises a bearing fixing section, a coil fixing section and an arm section, the carriage being obtained by performing upsetting on a press. The bearing fixing section is thicker than an arm and the coil fixing section. The arm and the coil fixing section become higher in rigidity than the bearing fixing section. The inner peripheral wall of an attaching hole in the bearing fixing section may be formed with a plurality of axially extending longitudinal grooves to increase the bearing attaching accuracy. The portion of the carriage plate adjacent the bearing fixing section is formed with engaging projections or engaging holes, so that these projections are fitted in the holes to superpose carriage plates to provide a carriage.
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