Disc drive with integral spindle yoke

Details Disc drive with integral spindle yoke Disc drive with integral spindle yoke

1987-10-20

1988-11-29

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, 310156, H02K 102, H02K 2124

Patent

active

047884649

ABSTRACT:
A disc spindle motor of the axial air-gap type includes a record disc chucking portion having a center boss with a disc support surface formed around the center boss. A magnet is arranged adjacent and beneath the disc support surface to hold a magnetic central core of the record disc against the support surface. The rotor of the spindle motor has a rotor magnet affixed to a rotor yoke and facing the stator coils. The center boss and disc support of the disc chucking portion and the rotor yoke of the rotor are all integrally formed in one piece by molding a resin, such as nylon-6, with a magnetic powder, such as iron powder.

REFERENCES:
patent: 4329606 (1982-05-01), Montagu
patent: 4337405 (1982-06-01), Hishida
patent: 4529900 (1985-07-01), Uzuka
patent: 4620139 (1986-10-01), Egami et al.
patent: 4658312 (1987-04-01), Elsasser et al.
patent: 4680655 (1987-07-01), Sugawara

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