Magnetic tape cassette storage case

Details Magnetic tape cassette storage case Magnetic tape cassette storage case

2002-08-30

2004-06-22

Yu, Mickey (Department: 3728)

Special receptacle or package

For holding a machine readable recording medium

For holding a tape cassette

C206S232000

Reexamination Certificate

active

06752269

ABSTRACT:

TECHNICAL FIELD
The present invention relates to a magnetic tape cassette storage case for storing a magnetic tape cassette.
BACKGROUND ART
Various types of storage cases for magnetic cassette tapes (herein after referred to as storage case) are proposed according to the configuration of the magnetic cassette to be stored. Referring now to FIG.
46
and
FIG. 47
, a storage case for digital videocassettes (hereinafter referred to as “DVCs”) and a magnetic tape cassette for the DVCs of the related art will be described by way of example.
The storage case
1441
shown in
FIG. 46
comprises a storage section
1443
for storing the magnetic tape cassette
1481
shown in
FIG. 47
, a lid section
1445
, and a connecting section
1447
. The storage section
1443
comprises a first plate portion
1451
, and a first sidewall portion
1453
formed integrally along the outer periphery of the first plate portion
1451
, and a pair of reel locking ribs
1445
a
,
1445
b
formed on the first plate portion
1451
at the positions somewhat closer to the rear side than to the front side. When the magnetic tape cassette
1481
shown in
FIG. 47
is stored, it will be fitted within the first sidewall portion
1453
in the state shown by a phantom line in
FIG. 46
when it is properly stored.
The lid section
1445
comprises a second plate portion
1461
, and a second sidewall portion
1463
formed integrally along three sides of the outer periphery of the second plate portion
1461
. The connecting section
1447
comprises a third plate portion
1471
and thin portions
1473
a
,
1473
b
formed on both sides thereof. These thin portions
1473
a
,
1473
b
enable the storage section
1443
and the lid section
1445
to close as a book.
Outside of the first sidewall portion
1453
that defines the storage section
1443
, there is provided an overhanging portion
1451
a
that is formed by a part of the first plate portion
1451
in an overhanging manner. Therefore, even when the storage section
1443
and the lid section
1445
are closed and the second sidewall portion
1463
of the lid section
1445
is fitted around the first sidewall portion
1453
of the storage section
1443
, the overhanging portion
1451
a
prevents the storage section
1443
from getting into the lid section
1445
, and thus the thickness of the case may be maintained as a whole.
There are formed a recess
1453
a
, or a locked portion, on the outer surface of the fist sidewall portion
1453
, and a projection
1463
a
, or a locking portion, on the inner surface of the second sidewall portion
1463
at the position corresponding to the recess portion
1453
a
when the storage section
1443
and the lid section
1445
are closed. Therefore, when the storage section
1443
and the lid section
1445
are closed with respect to each other, the projection
1463
a
and the recess
1453
a
engage so as to prevent an accidental opening of the storage section
1443
and the lid section
1445
.
Referring now to
FIG. 47
, the magnetic tape cassette
1481
will be described.
FIG. 47
is a perspective view of the magnetic tape cassette
1481
when viewed from the bottom side, in which an upper cassette half
1483
is situated below the lower cassette half
1485
. There are formed circular openings
1487
a
,
1487
b
at two locations on the lower cassette half
1485
, and engaging portions
1489
a
,
1489
b
integrally formed with the reel hubs (not shown) on which the magnetic tape is wound are exposed therefrom.
The engaging portions
1489
a
,
1489
b
have a function to unwinding and winding the magnetic tape when it is mounted in the VTR, and a function to engage the ribs
1455
a
,
1455
b
for engaging the reel and prevents rattling of the magnetic tape cassette
1481
when it is stored in the storage case
1441
.
On the front side of the magnetic tape cassette
1481
, an outer lid
1491
is provided for pivotal movement, and when it is mounted in the VTR or the like, the magnetic tape is pulled out after the outer lid
1491
is pivoted as shown by the arrow A in FIG.
47
. There is formed a recessed opening
1493
inside the outer lid
1491
at near the center in such a manner that the upper and lower cassette halves
1483
,
1485
are notched, and there is provided a shoulder
1495
on one end of the opening
1493
on the side of the lower cassette half
1485
.
The magnetic tape cassette
1481
maybe stored in the storage case
1441
by fitting the magnetic tape cassette
1481
in the sidewall portion
1453
as shown by a phantom line in
FIG. 46
, and pushing and inserting the ribs
1455
b
,
1455
a
for engaging the reels into circular engaging holes B formed at the center of the engaging portion
1489
a
,
1489
b
, whereby the positional restriction of the magnetic tape cassette
1481
is made and stored appropriately.
However, in the structure of the storage case
1441
described above, the following problem was recognized when the magnetic tape cassette
1481
is stored. When the storage section
1443
and the lid section
1445
are closed as described above, the second sidewall portion
1463
of the lid section
1445
is fitted on the outside of the first sidewall portion
1453
of the storage section
1443
under the normal situation. However, when the both side surface of the second sidewall portion
1463
of the lid section
1445
are pressed, the second sidewall portion
1463
deflects by the pressing force, and thus the sidewall portion
1453
of the storage section
1443
and the sidewall portion
1463
of the lid section
1445
abut against each other when the storage section
1443
and the lid section
1445
are closed, thereby causing imperfect closing. Especially, in order to improve sealing performance of the storage case
1441
, the clearance between the first sidewall portion
1453
of the storage section
1443
and the second sidewall portion
1463
of the lid section
1445
have to be reduced as small as possible. However, when the clearance is reduced, a slight pressurizing movement causes abutment between the sidewall portions
1453
and
1463
, thereby causing imperfect closing.
In addition, depending on the extent of the pressing force, there may be a case where the second sidewall portion
1463
of the lid section
1445
comes inside the first sidewall portion
1453
of the storage section
1443
, which also causes imperfect closing. When it is stored in the badly closed state for a long time, the storage case is subjected to plastic deformation, which is not preferable.
With such a circumstance in view, it is the first object of the present invention to provide a magnetic tape cassette storage case in which imperfect closing can be prevented.
Various storage cases for magnetic tape cassettes are proposed depending on the configuration of the magnetic tape cassette to be stored. Referring to FIG.
48
and
FIG. 49
, the storage case and the magnetic tape cassette of the related art will be described by way of example.
The storage case
1571
shown in FIG.
48
and
FIG. 49
is formed integrally of synthetic resin. The storage case
1571
comprises a storage section
1573
for storing a magnetic tape cassette T, a lid section
1575
, and a connecting section
1577
for connecting the storage section
1573
and the lid section
1575
so as to enable the opening-closing motion. The storage section
1573
comprises a first plate portion
1581
, and a first sidewall portion
1583
formed integrally along the outer periphery thereof, and the lid section
1575
comprises a second plate portion
1585
and a second sidewall portion
1587
formed integrally along the outer periphery thereof. When the magnetic tape cassette T is appropriately stored in the storage case
1571
, the magnetic tape cassette T is fitted in the first sidewall portion
1583
in the state shown by a phantom line in FIG.
49
.
On the outsides of the plate portions
1581
,
1585
, and of the connecting section
1577
, there is formed an information sheet holding portion
1601
. The information sheet holding portion
1601
is used for sto

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