Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Reexamination Certificate
2000-05-12
2001-09-11
Tupper, Robert S. (Department: 2754)
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
Reexamination Certificate
active
06288869
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to a drive for discs such as a floppy disc having high storage capacity received in cartridges, and more particularly, to a structure for preventing misinsertion of such disc cartridges.
Referring to
FIGS. 38-39
, a known 3.5″ microfloppy-disc cartridge
201
or first recording-medium cartridge of first format includes a disc-like recording medium
202
, a shell
203
rotatably accommodating the disc-like recording medium
202
, and a shutter
204
slidably mounted to the shell
203
to close a head opening
203
a
formed in upper and lower halves of the shell
203
.
The shell
203
is formed substantially like a flat rectangular parallelopiped, and has a front end face
203
b
as viewed in the direction of insertion in a cartridge holder
302
of a first drive
301
. A groove
203
c
is formed in the front end face
203
b
to make a protrusion
309
of a shutter opening member
303
of the cartridge holder
302
contact one end
204
a
of the shutter
204
. Moreover, an inclination
203
e
is formed at one end of the front end face
203
b
by slantingly cutting a corner thereof.
The first drive
301
for the first recording-medium cartridge
201
includes a cartridge holder
302
for holding the first recording-medium cartridge
201
as inserted therein and moving it between an insertion position and a loading position, the shutter opening member
303
mounted to the cartridge holder
302
to open the shutter
204
of the first recording-medium cartridge
201
, a lifting member
304
for lifting the cartridge holder
302
, a trigger lever or lock lever
305
for locking the lifting member
304
in a cartridge-holder lifting position, and an anti-misinsertion member
306
which when inserting in the cartridge holder
302
the first recording-medium cartridge
201
in a normal position, cooperates with the inclination
203
e
to allow loading of the first recording-medium cartridge
201
.
Referring to
FIG. 40
, the shutter opening member
303
has one end rotatably mounted to a chassis
308
, and another end or free end integrated with the shutter engaging protrusion
309
. The shutter opening member
303
is formed with the trigger lever
305
in the vicinity of the shutter engaging protrusion
309
. The shutter opening member
303
, which receives a torque from a torsion coil spring
310
, is set so that the shutter engaging protrusion
309
is introduced in the groove
203
c
of the first recording-medium cartridge
201
inserted in the cartridge holder
302
, and the trigger lever
305
is positioned to be engaged with a lever engagement
304
a
of the lifting member
304
.
The anti-misinsertion member
306
, which is in the form of a torsion coil spring, includes a coil
306
a
engaged with a first spring engagement
302
a
arranged on the upper side of the cartridge holder
302
. The coil
306
a
includes a first arm
306
b
extending from one end and engaged with a second spring engagement
302
b
arranged on the upper side of the cartridge holder
302
, and a second arm
306
c
extending to a cartridge opening of the cartridge holder
302
along one side face thereof and having an end bent substantially at right angles to form a cartridge contact
306
d.
The cartridge contact
306
d
is entered in the cartridge holder
302
through a recess
302
c
formed in the upper side of the cartridge holder
302
to contact the inclination
203
e
of the first recording-medium cartridge
201
inserted in the cartridge holder
302
.
With the first drive
301
, referring to
FIG. 41
, when inserting in the cartridge holder
302
the first recording-medium cartridge
201
in a normal position, the cartridge contact
306
d
of the second arm
306
c
of the anti-misinsertion member
306
contacts the inclination
203
e
of the first recording-medium cartridge
201
, and turns to the outside of the first recording-medium cartridge
201
to allow further insertion thereof in the cartridge holder
302
.
Referring to
FIG. 42
, when inserting further in the cartridge holder
302
the first recording-medium cartridge
201
, the shutter engaging protrusion
309
of the shutter opening member
303
is introduced in the groove
203
c
formed in the front end face of the first recording-medium cartridge
201
, contacting the one end
204
a
of the shutter
204
. When inserting further the first recording-medium cartridge
201
, the shutter opening member
303
is rotated against a force of the torsion coil spring
310
to open the shutter
204
. Referring to
FIG. 43
, as soon as the shutter
204
is opened, engagement of the trigger lever
305
with the lever engagement
304
a
of the lifting member
304
is released, so that the lifting member
304
is slid by a force of a biasing spring, not shown, to move downward the cartridge holder
302
, chucking on a spindle the disc-like recording medium
202
of the first recording-medium cartridge
201
.
On the other hand, referring to
FIG. 44
, when inserting in the cartridge holder
302
of the first drive
301
the first recording-medium cartridge
201
in other position than a normal position, the cartridge contact
206
d
of the anti-misinsertion member
306
does not contact the inclination
203
e
of the first recording-medium cartridge
201
, and therefore cannot turn to the outside of the first recording-medium cartridge
201
. Thus, the second arm
306
c
of the anti-misinsertion member
306
becomes in the stretched state to prevent insertion of the first recording-medium cartridge
201
in the cartridge holder
302
.
In addition to the first drive
301
for the first recording-medium cartridge
201
as shown in FIGS.
38
and
40
-
44
, there is known a first drive as shown in
FIGS. 45-54
.
The first recording-medium cartridge
201
driven by the first drive
301
has a concavity
211
for introducing a shutter engaging protrusion
309
of a shutter opening member
303
in a portion of a front end face
203
b
of a shell
203
, which is closed by a shutter
204
upon shutter closing and faces outside upon shutter opening.
The first drive
301
includes a shutter opening member
303
having a shutter engaging protrusion
309
, and a trigger lever
305
arranged separately. The first drive
301
as shown in
FIGS. 45-54
is referred to as a first drive of a separate trigger type with respect to the first drive of an integrated trigger type as shown in
FIGS. 39-44
.
Referring to
FIG. 47
, the shutter opening member
303
has one end rotatably mounted to a cartridge holder
302
by a shaft
307
, and another end or free end formed with the shutter engaging protrusion
309
. The shutter opening member
303
receives a torque from a coil spring
311
so that the shutter engaging protrusion
309
contacts one end of a circular long hole
302
d
formed in the upper side of the cartridge holder
302
.
On the other hand, the trigger lever
305
has one end rotatably mounted to a chassis
308
by a shaft
321
, and another end or free end formed with an engagement
322
engaged with a lifting member
304
. The trigger lever
305
is formed, in the vicinity of the engagement
322
, with a pressed portion
323
pressed by the front end face of the first recording-medium cartridge
201
inserted in the cartridge holder
302
. The trigger lever
305
receives a torque from a torsion coil spring
324
in the direction of engaging the engagement
322
with a lever engagement
304
a
of the lifting member
304
.
Referring to
FIGS. 48-49
, when inserting the first recording-medium cartridge
201
in the first drive
301
of a separate trigger type, the shutter engaging protrusion
309
of the shutter opening member
303
of the first drive
301
is introduced in the groove
203
c
of the first recording-medium cartridge
201
formed in the front end face of the first recording-medium cartridge
201
, contacting one end
204
a
of the shutter
204
.
Referring to
FIGS. 50-51
, when inserting further the first recording-medium cartridge
201
, the shutter opening member
303
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
Tupper Robert S.
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