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2. MECHANISM OVER VIEW
2.1 STRUCTURE OF MECHANISM AND OPERATION OF COMPONENTS
The mechanism consists of three blocks, i.e., a main chassis, which is the base of the entire mechanism, stage and
tray. Various kinds of operations are performed according to how those blocks are positioned in relation to one
another.
The stage block consists of CRG, stage and loading unit; and the loading unit moves up and down with the stage
block. The stage block is joined to the main chassis section with a stair and link lever. Sliding the stair moves the
entire stage block moves up and down. Moving the link lever allows the CRG to rotate to play a disc. The tray block
consists of six trays. Similarly to the stage block, the tray block moves up and down as the stair slides.
To play the disc, the stage block moves toward the tray block at a location where the disc can be played. Then, the
tray group is separated by the action of cylindrical cams, the CRG is inserted and the disc is clamped.
To load or eject the disc, the stage block moves to its lower end. Then, the tray block moves the target disc to a
location where the disc can be loaded or ejected. The tray group is separated by the action of cylindrical cams.
Then, the disc is loaded or ejected.
To carry out the aforementioned operation, the mechanism is provided with four motors. The operations listed in the
table below are carried out by using the motors as a motive power.
Cam gear motor
Elevation motor
Carriage motor
Spindle motor
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Tray separation operation
Carriage mechanism assembly rotation operation
Eject arm operation
Shutter opening/closing operation
Tray claw opening/closing operation
Elevation operation
Loading/ejection rollers rotation operation
Search operation
Disc clamp claw opening/closing operation
Disc rotation operation
CX-3168
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7
7
8
A
B
C
D
E
F
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