Dynamic information storage or retrieval – With particular cabinet structure – Slotted for edgewise insertion of storage disc
Reexamination Certificate
1997-03-05
2001-03-27
Letscher, George J. (Department: 2754)
Dynamic information storage or retrieval
With particular cabinet structure
Slotted for edgewise insertion of storage disc
Reexamination Certificate
active
06208608
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a disc ejecting apparatus for ejecting a disc installed in a disc rotating mechanism of a disc recorder and/or reproducer and a disc cartridge loading apparatus provided with this ejecting apparatus. Particularly, the present invention relates to an ejecting apparatus for ejecting a disc utilizing the driving force of a motor constituting a disc rotating mechanism and a disc cartridge loading apparatus.
BACKGROUND ART
Heretofore, a recorder and/or reproducer using an optical disc and a magneto-optical disc for a recording medium of a signal is used.
This recorder and/or reproducer is provided with a disc rotating mechanism for rotating an optical disc housed in a disc cartridge. This disc rotating mechanism is provided with a disc table on which a disc is set and a spindle motor for rotating this disc table. The disc table is provided with a centering member for fitting into a center hole provided in the center of an optical disc and a magnet for attracting a magnetic plate attached to cover the center hole of a disc on its face on which a disc is set. An optical disc is set by fitting its center hole to a centering member and attracting a magnetic plate by a magnet so that the disc can be rotated integrally with a disc table. This disc table is integrated with the driving shaft of a spindle motor and is rotated by driving the spindle motor.
An optical pickup constituting recording and/or reproducing means for recording and/or reproducing a signal on an optical disc set on a disc table and rotated integrally with the disc table is provided to the recorder and/or reproducer. This optical pickup scans the signal recorded area of an optical disc by feeding it in the radial direction of the rotated optical disc using a feeding mechanism.
A loading apparatus provided with an ejecting mechanism for setting an optical disc on the disc table of the disc rotating mechanism and ejecting the optical disc set on this disc table is provided to the recorder and/or reproducer using a disc for a recording medium.
In the meantime, in the recorder and/or reproducer using an optical disc on which a signal can be recorded as a recording medium, information such as the address of a recorded signal is placed on the catalog after a signal is recorded. Therefore, if an optical disc set on the disc table is ejected while a signal is being recorded, a signal is not recorded precisely.
If an optical disc set on the disc table is ejected while a signal recorded on the optical disc is being reproduced, smooth reproduction may be not performed next time a signal is reproduced.
Further, if an optical disc set on the disc table is ejected during recording and/or reproducing a signal on the optical disc, the optical disc may collide with the optical pickup, and the optical disc and the optical pickup may be damaged.
Therefore, an ejection mechanism wherein an optical disc set on the disc table is prohibited from being ejected during recording and/or reproducing a signal is provided to the recorder and/or reproducer using an optical disc as a recording medium.
For this ejection mechanism, the one constituted as shown in
FIG. 1
is proposed. This ejection mechanism is applied to a disc recorder/reproducer for recording and reproducing a signal using an optical disc as a recording medium and is provided with first and second ejection levers
117
and
118
. These first and second ejection levers
117
and
118
are attached along one side of the body
100
of a disc recorder/reproducer so that they can be moved. A grip
116
is provided to the first ejection lever
117
so that this lever
117
can be readily moved. When the first ejection lever
117
is moved along one side of the body
100
in the direction shown by an arrow c in
FIG. 1
, the second ejection lever
118
is moved in the direction shown by an arrow d in
FIG. 1
via a transmission lever
111
for transmitting operating physical force between the first and second ejection levers
117
and
118
.
As shown in
FIG. 1
, a turned part
115
which is at the end of the transmission lever
111
for transmitting the operating physical force of the first ejection lever
117
to the second ejection lever
118
is put between the first and second ejection levers
117
and
118
. When the first ejection lever
117
is moved in the direction shown by the arrow c in
FIG. 1
, the turned part
115
is pressed and the transmission lever
111
is turned on the side of the second ejection lever
118
. The second ejection lever
118
is moved in the direction shown by the arrow d in
FIG. 1
via the turned part
115
.
In the meantime, the second ejection lever
118
controls the opening and closing of a cover turned in synchronization with a cartridge holder into/in which a disc cartridge housing an optical disc is inserted and held. That is, the cover is turned in synchronization with the cartridge holder, when the cartridge holder is turned in a position in which a disc cartridge is to be set on the side of the body, the cover is turned so that it closes a part in which the cartridge is set and is locked by the second ejection lever
118
, and a closed state is held. When the second ejection lever
118
is moved in the direction shown by the arrow d in
FIG. 1
, the lock of the cover is released and the cover is turned in the direction in which the part in which the cartridge is set is opened. This cover is turned in the above direction by a twisted coil spring provided on the turning shaft of the cover.
The transmission lever
111
is arranged on an ejection regulating lever
106
arranged in the body so that the transmission lever can be swung and the turned part
115
which is at the end is protruded from one side of a housing between the first and second ejection levers
117
and
118
. This transmission lever
111
is arranged on the ejection regulating lever
106
with first and second supporting shafts
109
a
and
109
b
planted on the ejection regulating lever
106
respectively inserted into a first support hole
110
a
with a longer diameter in the longitudinal direction and a second support hole
110
b
with a large diameter. The transmission lever
111
can be moved in the direction shown by an arrow b in
FIG. 1
in the range of the first and second support holes
110
a
and
110
b
and is turned in the range of the second support hole
110
b
with a large diameter with the first supporting shaft
109
a
inserted into the first support hole
110
a
formed as a long hole in the center. The transmission lever
111
is pressed and moved in the direction shown by the arrow b in
FIG. 1
in which the turned part
115
is protruded between the first and second ejection levers
117
and
118
, by a tension spring
114
stretched between a spring fitting piece
113
protruded on one side of this lever
111
and a spring fitting piece
112
protruded on one side of the ejection regulating lever
106
. The ejection regulating lever
106
on which the transmission lever
111
is arranged is supported so that the ejection regulating lever can be moved in the directions shown by arrows a
1
and a
1
in
FIG. 1
for advancing or moving back to the first and second ejection levers
117
and
118
with first and second supporting shafts
107
a
and
107
b
planted on the body respectively inserted into first and second support holes
108
a
and
108
b
with a longer diameter in the moving direction of the transmission lever
111
. A rack
105
engaged with a driving gear
104
rotated by a drive motor
101
is formed on one side of the base end of the ejection regulating lever
106
on which this transmission lever
111
is arranged.
A spur gear
119
engaged with the rack
105
and a worm wheel
121
are provided on the same axis as the driving gear
104
. A worm gear
103
to which the driving force of the drive motor
101
is transmitted is engaged with the worm wheel
121
. This worm gear
103
and the drive motor
101
are coupled by engaging a spur gear
120
attached at the base end of the worm gear
103
w
Letscher George J.
Maioli Jay H.
Sony Corporation
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