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10. MECHANISM
DESCRIPTION
e Features
The
twin-—tray
system
mechanism
incorporated
in
this unit has
the
following
two
main
features.
The first is that loading motor for driving the trays
is the same
used
with
the conventional
single tray
system, and only one motor is used. This allows for
the configuration
of a twin
tray system
CD
player
at a low cost, Also because
almost
the same
control
circuit for driving
loading motor
as used for single
tray
CD
players
can
be
used, this
also
contributes
to reducing
costs.
The second feature is the reduction in space provided
by having
the trays stacked
over
top of each
other.
Because
this allows
for the same
parts arrangement
©
(electrical
system
board
on
right and
mechanism
on
left as seen
from
front
panel) as conventional
single
tray CD
players, our
know—how
of these
units
can
be directly
applied.
C A D E RENE
Slide angle
as
3
mC
a J]
SE
tissiisinndainan
rv
in
ie NER
ee
LTT
pa
Synchronous
gear
Before
movement
AY
the slid angle. Because
it is impossible to provide the
distance
that tray must
move
(from
OPEN
position
to PLAY
position) by the movement
which slide angle
is capable
of, the
operation
of the
linear
gear
O
attached
to loading
base, synchronous
gear
attached
to slide angle, and
the linear gear
section © of the
tray, doubles
the movement
distance
of slide angle
to
allow
movement
of
tray.
The
principles
of
operation
are as follows. When
slide angle moves
in
the horizontal direction (forward and back direction),
synchronous
gear
rotates
to move
tray by the same
amount
that
slide
angle
was moved.
As can be seen
in Fig, 10—1, the position
of tray
has
moved
twice
the
distance
@
that
slide
angle
travelled, when
compared
with
the
position
of tray
before
movement
of slide angle.
(The
same
applies
to both tray 1 and tray 2.)
As shown
in Fig, 10—2, slide angle U and slide angle
L
have
shafts
©
and
@
and
shafts
@
and
©
respectively, and E—rings ® and washers © are used
Fig. 10-2.
to attach
these
angles
to loading
base.
Thus, slide angle
U and
slide
angle
L move
along
grooves
@ and ©.
62
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