Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With means applying wave energy or electrical energy...
Patent
1997-01-31
1998-06-23
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With means applying wave energy or electrical energy...
1563798, 156556, 156580, 1562757, B29C 3508, B32B 3128
Patent
active
057700028
ABSTRACT:
A method and apparatus for assembling a hub for magnetically chucking an optical disc on a disc table of a recording/reproducing apparatus under a force of magnetic attraction includes an assembly guide member having a first guide portion movable in a direction perpendicular to one major surface of the disc substrate so as to be engaged in a center opening in the disc substrate, and a second guide portion formed integrally with the first guide portion so that its center axis is aligned with the distal end of the first guide portion. The second guide portion is fitted in a spindle shaft opening in the hub. The assembly guide member having its first guide portion fitted in the center opening for positioning the disc substrate and the second guide portion being engaged in this state in the spindle shaft opening for centering the disc substrate with respect to the hub. The disc substrate and the hub may be assembled together in the correctly centered state via the assembly guide member by a simplified operation with minimum cost, thus assuring reduction in investment cost and improved productivity. In addition, the centering between the disc substrate and the hub, which usually required time-consuming laborious operation, may be achieved easily by employing the assembly guide member, so that the assembly process may be simplified thus lowering the cost of the disc-shaped recording medium.
REFERENCES:
patent: 4687536 (1987-08-01), Hiramatsu et al.
patent: 4981538 (1991-01-01), Kikuchi
patent: 5080736 (1992-01-01), Matsui
Funawatari Takatsugu
Ishikawa Hiroyuki
Takahashi Kenji
Ball Michael W.
Maioli Jay H.
Sony Corporation
Tolin Michael A.
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