JPS5919982Y2 - tape cassette - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cassette tape, in which the cassette is placed in a corner near the front opening in the cassette housing, facing the reel, and integrally attached to the front wall and side wall of the cassette. The provided partition wall, which is substantially oblique in plan view, and the outer wall of the cassette casing form a roughly triangular space separated from the space in which the reel is arranged, and the space is divided into two or more rooms by the wall. A member for locking the opening/closing lid in a closed state is provided in one of the divided rooms, and even if the tape is slack, it is guided by the partition wall, thereby preventing damage to the tape. Another object of the present invention is to provide a tape cassette which can prevent the entry of dust and the like and has a strong structure with reinforced corners.

Tape cassettes, which are generally applied to so-called automatic tape loading type magnetic recording and reproducing devices that pull the tape out of the cassette and load it into a predetermined tape path, are equipped with a guard panel that can be opened and closed on the tape drawer side. The lid is locked in the closed position so that it cannot be opened easily, and the lock is released when the tape cassette is inserted into the cassette storage case to a predetermined position.

As is well known, this type of tape cassette has a structure in which, when the tape cassette is installed in a predetermined position on the playback device, a positioning stud installed upright on the playback device is relatively inserted into a hole formed on the bottom of the tape cassette. ing.

Therefore, if there is any slack in the tape in this installed state, the slack tape may become entangled with the stud, resulting in damage to the tape.

Further, dust and the like can easily enter the cassette through the above-mentioned holes.

In addition, the front corner of the cassette housing, including the above-mentioned hole, is provided with a notch into which a locking member is inserted to open the lid when the tape cassette is moved downward, and a lid locking mechanism.
These mechanisms also have the disadvantage that the tape tends to get tangled.

The present invention eliminates the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings.

1 and 2 show a plan view and a side view, respectively, of an embodiment of the tape cassette according to the present invention.

In each figure, a tape cassette 1 has a cassette housing 4 formed by combining an upper half 2 and a lower half 3 and fixing them with screws, and a guard panel 5 that covers the cassette 1 to the front opening and protects the magnetic tape inside. and a lock plate 6 for locking the guard panel 5 in the closed state.

A supply reel 7 and a take-up reel 8 are built into the tape cassette 1, and the magnetic tape 10 pulled out from the supply tape roll 9 is guided by guide poles 11 and 12 along the front opening side of the cassette. It is guided and reaches the tape winding body 13 on the winding side.

The guard panel 5 has shafts 14a and 14b on both sides supported by shaft supports formed by an upper half 2 and a lower half 3, as shown in FIG. It is rotated in the direction of arrow B.

Note that the guard panel 5 is normally closed (when not in use) by being biased in the closing direction by a torsion spring 15 provided on the shaft 14a, and is locked by the lock plate 6 as described later. has been done.

The lock plate 6 has its axes 16a and 16b connected to the upper half 2 and the lower half 3, as shown in particular in FIGS. 4 and 6.
A torsion spring 18 with a small spring constant is provided on the shaft 16a and extends along the inner surface side of the stepped surface portion 17 of the lower half 3 in a rotatable state held between the
This exerts a rotational force in the direction of positively contacting the inner surface of the stepped surface portion 17.

Further, the lock plate 6 is formed with a lock protrusion 20 having an inclined surface 19 and a lock release protrusion 21 that is pressed when the lock is released.

Here, when the lock release protrusion 21 is pressed from its outer surface side, it moves along with the rotation of the lock plate 6, and the direction of movement thereof is approximately perpendicular to the cassette insertion direction, as will be described later.

The locking protrusion 20 passes through a first opening 22 formed in the stepped surface 17 and fits into a groove 23 formed on the middle wall side of the side surface of the guard panel 5. (See Figures 2, 3 and 4).

As a result, the guard panel 5 is locked in the closed lid position.
Rotation in the direction of opening the lid is reliably controlled.

Further, the lock release protrusion 21 penetrates the second opening 24 which is a part of the step surface 17, projects outside the step surface 17, and is exposed to the outside.

Here, the lock release protrusion 21 is inserted into the narrow groove 25 formed by the step surface 17 of the lower half 3 and the side edge of the guard panel 5 as shown in FIGS. 2 to 4 when the lid is closed. Since it does not protrude from the side surface of the tape cassette 1, there is no risk of it being unnecessarily pushed by a fingertip or the like when handling the tape cassette, and there is no inconvenience that the guard panel 5 will be unlocked while handling the tape cassette.

Note that the step dimension t1 of the lower half 3 is the same as that of the guard panel 5.
It is slightly larger than the thickness dimension t2 of the guard panel 5.
There is a slight gap between the inner surface of the holder and the stepped surface portion 17.

When the tape cassette 1 is inserted into the cassette storage case of the playback device, the lock release locking piece 30 pushes the protrusion 21 and the lock plate 6 rotates, as shown by the dashed line in FIG. The protruding portion 20 of the lever is pulled out from the groove portion 23.

As a result, the guard panel 5 is unlocked and becomes ready to be opened.

Thereafter, the tape cassette 1 is moved downward and installed in a predetermined position.

When the tape cassette 1 moves downward, the guard panel 5 is locked by a predetermined locking member (not shown) and opens against the torsion spring 15 as shown by the dashed line in FIG.

Further, as the tape cassette 1 moves downward, a rotating pole (not shown) that operates during rotation to pull out the magnetic tape from the cassette and load it into a predetermined tape path is inserted into the notches 26 and 27 of the tape cassette 1. Relatively intrusive.

In addition, when taking out the tape force set 1-1, it is moved upward and then pulled out to the front side, the guard panel 5 is closed, and it is removed from the mounting section.

A locking mechanism including the above-mentioned locking plate 6 is provided at a corner 40 near the front opening of the cassette case 4, and a notch 41 into which the above-mentioned locking member is inserted is formed into a wall portion 42. .43 is standing up.

The wall portion 42 surrounds the locking mechanism, and the take-up reel 8
Opposing walls 42a are formed on the outer periphery of the housing 42a to face each other at a distance.

Also, a partition wall 45 connects the wall portions 42 and 43 and surrounds a hole into which the positioning stud 44 of the gag regeneration device is relatively fitted.
are integrally formed with the wall portions 42,43.

The opposing wall 42a and the partition wall 45 are formed substantially obliquely in a plan view so as to form a substantially triangular space between them and the corner of the cassette housing.

Further, the continuous wall portion 42 a and the partition wall 45 have one end integral with the front wall of the cassette housing, and the other end integral with the rear wall of the cassette housing, and are an entrance/exit portion to the tape reel 8. The tape is formed to extend along the path.

With such a configuration, even if the tape 10 becomes slack between the guide pole 12 and the take-up reel 8, the tape 10 is guided by the partition wall 45 and does not enter the triangular portion within the partition wall 45, so that the tape 10 is not loosened. It is reliably prevented from getting entangled with the stud 44, the locking member in the notch 41, the lock mechanism including the lock plate 6, etc.

Also, the notch 41. Dust and the like entering through the holes into which the studs 44 are fitted are blocked by the partition wall 45 and do not enter the case, and furthermore, the corners of the case are connected to the partition wall 45 and the wall portions 42 and 43.
etc., and the strength is also increased.

As mentioned above, the tape cassette according to the present invention has tape 1
In the tape cassette 1, the cassette 1 has an opening/closing lid 5 that covers the front opening of the cassette casing 4, which has a built-in reel 7.8 wound with a tape 10 wound therein and is attached to a predetermined position of a playback device and from which the tape 10 is pulled out. A partition wall 42a that is substantially oblique in plan view is provided integrally with the front wall and side wall of the cassette housing 4, facing the reel 7.8, at a corner 40 in the vicinity of the front opening in the housing 4. , 45 and the outer wall of the cassette casing form a roughly triangular space separated from the space in which the reel is disposed, and the space is divided into two or more rooms by walls 42 and 43. Since the structure is such that the members 6 and 20 for locking the opening/closing lid in the closed state are arranged in one divided room, even if the tape becomes loose inside the cassette case, the tape will not be moved by the partition walls 42a and 45. This prevents the tape from entering the locking member installation space, preventing the tape from getting entangled with the locking member and causing damage.Furthermore, since loose tape is guided along the partition wall, the tape is less likely to be disturbed. This is advantageous in terms of protecting the tape, and since the partition walls 42a, 45 and the walls 42, 43 are provided integrally with the front wall and side wall of the cassette casing and have no discontinuous parts, the reinforcing effect is large. , the cassette housing has greater mechanical strength,
In addition, it is possible to effectively prevent dust from entering the reel installation space from the outside, and the remaining divided room can be used to store locking members etc. without interfering with each other. It has characteristics.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view, respectively, of one embodiment of the tape cassette according to the present invention, FIG. 3 is a partial view seen from the direction of the arrow hole in FIG. 2, and FIG. The figure shows the configuration of the locking mechanism section with the upper half of the tape cassette removed, Figure 5 is a view taken along the line ■-■ in Figure 1, and Figure 6 is the ■I in Figure 4. -■ It is an arrow view showing the lock plate along the I line. 1... Tape cassette, 5... Guard panel, 6...
...Lock plate, 9...Supply side tape winding unit, 10...
・Magnetic tape, 13...Take-up side tape winding unit, 20・
...Lock protrusion, 21...Lock release protrusion,
23...Groove portion, 25...Narrow groove portion, 30...Lock release locking piece, 40...Front corner portion, 41...Notch, 42.43...Wall portion, 42 a ... Opposite wall, 45
... Bulkhead, 44... Stud.

Claims (1)

[Scope of utility model registration request] In a tape cassette that has a built-in reel wound with tape and has an opening/closing lid that covers the front opening of the cassette housing that is attached to a predetermined position of a playback device and the tape is pulled out, the area near the front opening in the cassette housing. A space in which the knoll is arranged in a corner of the cassette casing and a partition wall that is substantially oblique in plan view and integrally provided on the front wall and side wall of the cassette casing, facing the reel, and the outer wall of the cassette casing. An isolated roughly triangular space is formed, the space is divided into two or more rooms by a wall, and a member for locking the opening/closing lid in a closed state is provided in one of the divided rooms. A tape cassette.