Adjusting device for a disk tray for an optical disk drive...

Details Adjusting device for a disk tray for an optical disk drive... Adjusting device for a disk tray for an optical disk drive...

2002-12-04

2004-11-09

Mullins, Burton S. (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S051000, C360S099070, C360S099080

Reexamination Certificate

active

06815852

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an adjusting device for a disk tray for an optical disk drive motor.
2. Description of the Related Art
FIG. 1
of the drawings illustrates a conventional optical disk drive motor including a disk tray
10
, a shaft
20
, a rotor
30
, and a stator
40
. A holding means
11
is mounted on the disk tray
10
for holding an optical disk. The shaft
20
is connected to the disk tray
10
and the rotor
30
. The stator
40
is fixed to an axle tube
41
and controlled by a circuit board
42
to create alternating magnetic fields for providing induction with a ring magnet
31
on the rotor
30
, thereby turning the disk tray
10
and the optical disk.
Generally, the disk tray
10
would incline relative to the rotor
30
when the disk tray
10
is mounted onto the shaft
20
. Namely, the disk tray
10
is apt to be located in a position not parallel to the rotor
30
. To prevent unbalanced rotation of the optical disk drive motor and to decrease the bad product rate resulting from deviation of the disk tray
10
, the disk tray
10
is subject to a grinding process to reduce the thickness of the disk tray
10
from “a” to “b”, thereby keeping the surface of the disk tray
10
in a parallel relationship with the rotor
30
. Though the grinding procedure could compensate the deviation of the disk tray
10
, the balance state of the disk tray
10
must be repeatedly tested during the grinding procedure. As a result, the grinding procedure is considerably time-consuming. Further, the strength of the disk tray
10
and the rotational stability of the disk tray
10
could be destroyed by excessive grinding.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide an adjusting device for a disk tray for an optical disk drive motor for adjusting the disk tray to a position parallel to a rotor of the optical disk drive motor.
An optical disk drive motor in accordance with the present invention comprises a rotor and a disk tray. At least one adjusting member is provided between the rotor and the disk tray. The adjusting member is adjustable to adjust a pressing force exerted on one of the rotor and the disk tray, thereby keeping the rotor and the disk tray in a parallel relationship.
Other objects, specific advantages, and novel features of the invention will become more apparent from the following detailed description and preferable embodiments when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 5499777 (1996-03-01), Ahn
patent: 6094047 (2000-07-01), Guzik et al.
patent: 6158112 (2000-12-01), Kim et al.
patent: 6462902 (2002-10-01), Luo et al.

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