Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specified detail of transducer assembly support structure
Reexamination Certificate
1999-06-02
2001-04-24
Klimowicz, William (Department: 2754)
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specified detail of transducer assembly support structure
C369S192100, C369S178010, C369S075110
Reexamination Certificate
active
06222816
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for reproducing an optical disc selected from a plurality of discs stored in a disc storage, and more particularly to a disc reproducing device mounted on a motor vehicle.
There is known a disc changer for reproducing an optical disc selected from a plurality of discs stored in a disc storage.
In recent years, a disc changer has been proposed which disc changer reproduces a disc at its arranged position.
The disc changer is moved along the disc storage in the disc arranging direction. When the selected disc is reproduced, disc mounting trays adjacent the selected disc are moved in the disc arranging direction so that spaces are formed on both sides of the selected disc. A disc reproducing portion is moved from a retracted position to a reproducing position, so that the disc reproducing portion is inserted into the spaces to reproduce the disc. Thus, the size of the disc changer is reduced in the direction perpendicular to the disc arranging direction. Hence, the disc changer is suitable to be mounted on the motor vehicle.
Japanese Patent Application Laid Open 3-176852 discloses a mechanism for moving the disc reproducing portion between the retracted position and the reproducing position. The mechanism has a movable chassis on which a turntable, pickup and a pickup moving device for moving the pickup in the radial direction of the disc are mounted. The movable chassis is rotated about a shaft between the retracted position and the reproducing position.
The movable chassis is supported only by the shaft during the reproduction of the disc. Consequently, the movable chassis is liable to be vibrated by external vibration. If the chassis is vibrated, the disc is not properly reproduced. In particular, this problem is serious in the disc changer mounted on the motor vehicle.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a disc reproducing device which resolves the problem caused by the external vibration.
According to the present invention, there is provided a disc reproducing device comprising, a disc storage, a plurality of trays, each for holding a disc, arranged in a disc arranging direction in the disc storage, a shaft provided on a chassis, a movable base provided to be rotated about the shaft, a disc player having a turntable, a disc clamper and a pickup, and mounted on the movable base, driving means for rotating the movable base between a retracted position and a disc reproducing position, lock means provided on the chassis for engaging with the movable base at the disc reproducing position.
The lock means comprises two lock means to be engaged with movable base at two positions.
The two lock means comprises a lock member mounted on the chassis, and a lock arm pivotally mounted on the chassis so as to be moved between a retracted position and an engaging position.
The two positions are positioned at both sides of a line connecting the shaft and a center of the turntable.
A center of the turntable is positioned in an area surrounded by three lines connecting the two positions and the shaft.
These and other objects and features of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.
REFERENCES:
patent: 5023862 (1991-06-01), Kim
patent: 5046059 (1991-09-01), Yoshida et al.
patent: 5101399 (1992-03-01), Watanabe et al.
patent: 5636198 (1997-06-01), Maeng
patent: 197 25 169 A1 (1997-12-01), None
patent: 3-176852 (1991-07-01), None
patent: 10-269666 (1998-10-01), None
Ido Kenjiro
Kimura Tomomichi
Mizoguchi Takashi
Suzuki Toru
Uchiyama Kenji
Arent Fox Kintner & Plotkin & Kahn, PLLC
Klimowicz William
Pioneer Electronic Corporation
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