Alps Electric Co., Ltd.

Kazuo Kozumi

Masao Okita

Toru Sawada

Ichiro Noguchi

Kazuo Kobayashi

Yasunari Takayama

A method of mounting a magnetic head to a case employs a jig having a grooved placing unit for placing the head and a support for the case formed at a predetermined height from the slidably contacting surface of the head. The method includes placing the slidably contacting surface of the head on the bottom of the placing unit of the jig to position the head in the placing unit, placing the case on the support to set its height at a predetermined gap with respect to the mounting surface of the head, and filling a bonding agent in the gap between the mounting surfaces of the case and the head.

Method of mounting a magnetic head

A magnetic head assembly comprises a carriage on which a first magnetic head is mounted for performing read/write with respect to one face of a disk, a second magnetic head also mounted on the carriage opposite to the first magnetic head for performing read/write with respect to the other face of the disk, and a hold case coupled turnably via a leaf hinge spring to the carriage, wherein the first magnetic head is attached via a gimbal spring to the carriage, and the second magnetic head is secured to the hold case, and is characterized in that the carriage has a support portion abutting directly on the hold case inclusive of the leaf hinge spring to support the same, so that the hold case is supported turnably with the support portion serving as a supporting point, whereby the reference plane of the hold case is defined by the support portion, so that accuracy can be ensured for the reference plane of the second magnetic head with respect to the disk and an enhancement of the follow-up performance can contribute to an improvement of the read/write characteristic.

Pivot support structure for magnetic head assembly

A magnetic head assembly of a disk drive device has an upper magnetic head fastened to a case side and a lower magnetic head mounted on a gimbal plate of a carriage side. The upper case assembly includes a plurality of leaf hinge springs extending to the vicinity of the upper magnetic head, which is bonded to a supporting plate, and wire leads from the magnetic head are soldered to the leaf hinge spring ends as lead terminals. The other ends of the leaf hinge springs extend to the rear side of the case and serve both as a pivotable hinge mounting of the case to the carriage and as lead terminals to an external read/write controller. The upper case assembly is formed by molding in resin a flat plate which is precut with the leaf hinge spring and supporting plate portions formed in a predetermined shape, cutting the flat plate thus insert molded to separate the plate and a plurality of lead terminals independently, fastening the upper magnetic head to the plate, and connecting the lead wires from the fastened magnetic head to the predetermined divided lead terminals. Thus, the magnetic head assembly can be accurately manufactured inexpensively.

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Furukawa, Japan

Kazuo Kozumi