JPH05178390A - Tape stopper - Google Patents

Abstract

PURPOSE:To prevent loosening of a tape without fail by a method wherein a tape stopper mounted on a sealed type tape cassette for a digital audio tape recorder for high-density recording or the like is formed by planting an engaging projection to engage with a hub and a tongue to sandwich a magnetic tape between rear surfaces of opening and closing lids. CONSTITUTION:When a tape cassette 1 is set in a recording and reproducing device, a lid 12 rotates upward to open a magnetic tape exposed part 9, and at the same time, a slider 13 is moved rearward to open a pocket part 10 of a lower half 4. A tape loading guide member on the recording and reproducing device side advances into the opened pocket part 10 and a magnetic tape 7 is drawn out forward. When this tape cassette 1 is out of use, a tape stopper 20 is placed from below with the slider 13 kept open. The tape stopper 20 is formed by erecting on a bottom plate 21 an engaging projection 22 to engage with an engaging protruding part 6a of a hub 6 and a tongue part 23 to sandwich the magnetic tape 7 together with a rear surface of the lid 12 at the pocket part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape stopper for preventing loosening of a tape when a closed type tape cassette for high density recording is not used (stored).

[0002]

2. Description of the Related Art First, in FIG. 4 and FIG. 5, a sealed tape used in a DAT (digital audio tape recorder) for recording music or the like or a DDS (digital data storage) system for data memory. The configuration of the cassette will be described.

In the figure, 1 is a tape cassette as a whole, and 2 is a cassette housing, and this cassette housing 2 is formed by integrally fixing an upper half 3 and a lower half 4 by screwing or the like. A pair of hub drive shaft insertion holes 5 is formed on the left and right sides of the lower half 4, and a pair of hubs 6 are rotatably housed in the cassette housing 2 positioned above the hub drive shaft insertion holes 5. A magnetic tape 7 is wound around the outer peripheral surface of the hub 6. A plurality of engaging protrusions 6 are formed on the inner peripheral surface of the hub 6.
a are formed at predetermined intervals in the circumferential direction, and when the tape cassette 1 is mounted on the recording / reproducing apparatus, the engaging projections 6a are formed.
Further, the hub drive shaft on the recording / reproducing apparatus side is engaged in the rotational direction to rotationally drive the hub 6.

The magnetic tape 7 wound around the hub 6 is provided with right and left tape guide portions 8 provided on the front portion of the cassette housing 2.
It is led out and exposed to the front surface side of the cassette housing 2 via. Further, in the front portion of the lower half 4, a rear side of the magnetic tape exposed portion 9, that is, a portion corresponding to the back side of the magnetic tape 7 between the left and right tape guide portions 8 is cut out in a concave shape. When a tape cassette 1 is mounted on a recording / reproducing apparatus, a tape loading guide member on the recording / reproducing apparatus side is inserted into the pocket section 10 to insert the magnetic tape 7 into the cassette case. It is designed to be pulled out to the front of the body 2 (tape loading).

On the other hand, a transparent window portion 11 is formed in the upper half 3 so that the remaining amount of the magnetic tape 7 wound around the hub 6 can be confirmed through the window portion 11. Is becoming Further, a lid 12 for opening and closing the magnetic tape exposed portion 9 on the front surface of the cassette housing 2 is attached to the front end portion of the upper half 3 so as to be rotatable in the up-and-down direction. This lid 12
The magnetic tape exposing portion 9 is closed by the above, and when the tape cassette 1 is mounted on the recording / reproducing apparatus, the lid 12 is rotated upward by the mechanism on the recording / reproducing apparatus side, and the magnetic tape exposing portion 9 is opened.

A slider 13 is mounted on the bottom side of the lower half 4 of the cassette housing 2 so as to be slidable in the front-rear direction. The slider 13 has a corresponding hole 14 corresponding to the hub drive shaft insertion hole 5 of the lower half 4, and the tape cassette 1
When not in use, the pocket portion 10 of the lower half 4 is closed at the front sliding position, and the corresponding hole 14 does not correspond to the hub drive shaft insertion hole 5 and the hub drive shaft 5 is closed. When the tape cassette 1 is attached to the recording / reproducing apparatus, the slider 13 is slid backward by the mechanism on the recording / reproducing apparatus side, whereby the pocket portion 10 of the lower half 4 is moved.
Is opened, the corresponding hole 14 is brought into a state corresponding to the hub drive shaft insertion hole 5, and the hub drive shaft insertion hole 5 is opened.
A guide member for tape loading is inserted into the pocket portion 10, and a hub drive shaft is inserted into the hub drive shaft insertion hole 5 from the recording / reproducing apparatus side.

[0007]

In the tape cassette having such a structure, the slack in the winding of the magnetic tape which occurs during storage is a serious problem. A conventional tape cassette of this type has a built-in stopper mechanism, but it is useless when excessive vibration is applied. If the tape cassette is applied to the recording / reproducing device in a state where the magnetic tape is wound and loosened, it becomes a major cause of malfunctions such as so-called misloading and tape jamming.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a tape stopper that can easily prevent looseness of the tape in the tape cassette having the above-described configuration.

[0008]

That is, according to the present invention, a hub around which a tape is wound is attached to the front surface of a cassette housing which is rotatably accommodated, and a tape exposed portion on the front surface of the cassette housing is opened and closed. A tape having a lid and a slider for opening and closing a pocket for inserting a tape loading member, which is formed by cutting out a hub drive shaft insertion hole on a bottom surface side of a cassette housing and a rear portion of a tape exposed portion. A tape stopper that is attached to the cassette, and is inserted into the hub drive shaft insertion hole with the slider open, and is inserted between the locking projection that engages with the hub and the pocket part, and between the back side of the lid. And a tongue piece for sandwiching the tape.

[0009]

By storing the tape cassette with the above-mentioned tape stopper attached, the locking projections of the tape stopper prevent the hub from rotating and prevent the tape from being loosened in the cassette housing. In addition, since the tape is sandwiched between the tongue piece of the tape stopper and the lid at the front tape exposed portion, loosening of the tape at this portion is also prevented, so when the tape cassette is applied to the recording / reproducing device. There is no risk of misloading or tape jamming.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. In the figure, 20 indicates a tape stopper according to the present invention.
Is, for example, an aluminum sheet or a plastic sheet obtained by press-molding or vacuum-molding a plastic such as hard vinyl chloride. As shown in FIG.
The slider 13 is attached from below with the slider 13 open.

The tape stopper 20 is formed on a bottom plate portion 21 along the bottom surface side of the tape cassette 1 with a locking projection 22 which is inserted into the hub drive shaft insertion hole 5 and engages with the engaging projection 6a of the hub 6. The tape stopper 2
The front part of 0 is inserted into the pocket part 10 and the lid 12
A tongue portion 23 sandwiching the magnetic tape 7 is provided so as to stand upright at a substantially right angle with respect to the bottom plate portion 21 with respect to the back side thereof. Further, a back plate portion 24 along the back side of the tape cassette 1 is provided at a rear portion of the tape stopper 20 so as to stand upright at a substantially right angle to the bottom plate portion 21.

When the tape cassette 1 is not used, the tape stopper 20 is mounted and stored in the cassette storage case C so that the hub 6 is prevented from rotating by the locking projection 22 of the tape stopper 20. Since the lock state is achieved, the magnetic tape 7 is not loosened inside the cassette housing 2 even if excessive vibration is applied. Further, in the magnetic tape exposed portion 9 on the front surface of the cassette housing 2, the magnetic tape 7 is sandwiched between the tongue piece portion 23 of the tape stopper 20 and the lid 12,
Even in this portion, the magnetic tape 7 is not loosened.

Therefore, when the tape cassette 1 is applied to the recording / reproducing apparatus, malfunctions such as misloading and tape jamming due to looseness of the magnetic tape do not occur, and a reliable tape running operation is performed. ..

[0014]

As described above, by mounting the tape stopper of the present invention in the tape cassette, the tape is not loosened even if excessive vibration is applied, and as a result, misloading or tape jamming is prevented. It can be prevented from occurring.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment.

FIG. 2 is a perspective view of the embodiment seen from below.

FIG. 3 is a vertical cross-sectional side view of the tape cassette according to the embodiment in a stored state.

FIG. 4 is a perspective view of a tape cassette.

FIG. 5 is a perspective view of the tape cassette seen from below, showing a state in which a lid and a slider are opened.

[Explanation of symbols]

 1 Tape cassette 2 Cassette housing 5 Hub drive shaft insertion hole 6 Hub 7 Magnetic tape 9 Magnetic tape exposed part 10 Pocket part 12 Lid 13 Slider 20 Tape stopper 22 Locking protrusion 23 Tongue part

Claims (1)

[Claims] 1. A lid, on which a hub around which a tape is wound is rotatably accommodated, is attached to a front surface of a cassette housing, and a lid for opening and closing a tape exposed portion on the front surface of the cassette housing, and a bottom side of the cassette housing A tape stopper attached to a tape cassette having a hub drive shaft insertion hole and a slider for opening and closing a pocket portion for inserting a tape loading member formed so as to cut out a rear portion of the tape exposed portion. With the slider open, the tape is sandwiched between the locking projection that is inserted into the hub drive shaft insertion hole, engages with the hub, and is inserted into the pocket portion, and the back side of the lid. And a tongue portion, the tape cassette being mounted on the tape cassette when the tape cassette is not in use so as to prevent the tape from loosening. Wrapper.