JPS581908Y2 - tape cassette - Google Patents

Description

[Detailed description of the invention] This invention stores a tape, such as a magnetic tape, in a plate-like casing so that it can run, and can be used on both the front and back sides. The present invention relates to a tape cassette in which erroneous erasure prevention claws are provided on each side of the casing.

Traditionally, tape cassettes used in cassette-type tape recorders, such as reel-to-reel tape cassettes, had a plate-like casing mostly made of opaque synthetic resin and only a portion transparent. It is difficult to see the running state of the tape, and it is extremely troublesome to form a transparent synthetic resin window in a part of the opaque synthetic resin casing.

It has been considered that by molding the entire casing from transparent or translucent synthetic resin, it will be possible to clearly see the running state of the tape inside the casing, and the structure will be simpler and cheaper. obtain.

However, in such a case, a pair of accidental erasure prevention claws provided separately for both sides, for example, side A and side B, are used to distinguish whether they are for side A or side B. Since it is impossible or difficult to do this by color-coding the pair of casing components, it becomes difficult to distinguish between the accidental erasure prevention claws, which makes it difficult to distinguish between the accidental erasure prevention claws on the undesired side. There is a risk that the image will be removed, and the surface that should be prevented from being erased will be erased by mistake.

The present invention has been devised to correct the above-mentioned defects, and includes a method for displaying the distinction between the front and back surfaces on the front and back surfaces, respectively, in the vicinity of the front and back accidental erasure prevention claws. Surface display marks such as A and B are attached, and arrows pointing from each surface display mark to each accidental erasure prevention claw are provided between these surface display marks and the accidental erasure prevention claw on the front and back surfaces, respectively. , these arrows are integrally molded with the casing by adding irregularities to the casing.

With this configuration, it is possible to completely prevent an erroneous operation that would unnecessarily put the erroneous erasure prevention claw on the undesired side into the erroneous erasure prevention state or the erroneous erasure non-prevention state, and to prevent the erroneous erasure prevention claw from being erroneously placed on the side to be prevented from being erased. Eliminating the fear of erasing, and making it extremely easy to distinguish between the front and back sides of the cassette,
It is easy to form arrows indicating that each surface is an erroneous erasure prevention claw, and these arrows do not easily disappear from the casing.

Next, an embodiment of the present invention will be described with reference to the drawings.A tape cassette 1 has a plate-shaped casing 5 made up of a pair of cassette components 2 and 3 made of molded transparent or semi-transparent synthetic resin. has been done.

The cassette structures 2 and 3 have the same shape and are integrally fixed to each other by screws 4.

A bulging step 6 is formed at the front of the casing 5, and the bulging step 6 is provided with a pair of positioning pin insertion holes I and a pair of capsun insertion holes 8, respectively.

As is conventionally known, a magnetic head insertion hole and a pair of pinch roller insertion holes are provided on the front side surface, that is, the front wall, of the casing 5, respectively.

The rear side surface of the casing 5, that is, the rear wall 9, is provided with accidental erasure preventive devices 10 and 11 near both ends, respectively, and the claw 10 that prevents accidental erasure of the surface, that is, the A side 12, is integrated with the cassette structure 2 and extends upward. A claw 11 that hangs downward from the cassette structure 3 and prevents erroneous erasing of the back side, that is, the B side, extends upward from the bottom and is integral with the cassette structure 3.

These claws 10 and 11 are detected by the detection lever of the tape recorder's accidental erasure prevention mechanism when the cassette 1 is installed in the cassette loading section of a cassette type tape recorder, and magnetic recording is performed only when this detection is performed. It can be done.

Therefore, if the claws 10 and 11 are broken off, no detection is performed by the detection lever, and no magnetic recording is performed, thereby completely preventing erroneous erasure.

A pair of reels 13 and 14 are rotatably supported within the casing 5, and a magnetic tape is wound from one reel to the other reel so as to be able to run forward and backward.

A donut-shaped display paper 17 is attached to the A side 12 and has a surface display 15, that is, a surface display character rAJ and an index column 16 in which the user writes an index such as a title in advance or as necessary. ing.

Also, on the 8th side 20, there is a side display 21. That is, surface display character rBJ
A donut-shaped display paper 23 is attached symmetrically to the display paper 17, and has an index column 22 in which the user writes an index such as a title in advance or as needed.

On the front side or back side of the portion of the A side 12 and the 8th side 20 adjacent to the accidental erasure prevention claws 10 and 11 for each surface, there are accidental erasure prevention claws io of the respective surfaces 12 and 20,
The arrows 24 and 25 indicating the i1 are formed on the cassette 5 by making the cassette components 2 and 3 uneven by etching with a mold or by using Holatosukun Pink or the like.
Both are integrally molded.

The arrows 24 and 25 are separated from a V-shaped end portion 32 with a protruding front end 31 and a straight arrow shaft portion 33 extending rearward from the end portion 32, and are surrounded by a circular region 34.

Further, the protruding front ends 31 of the beveled portions 32 of the arrows 24 and 25 are directed toward the accidental erasure prevention claws 10 and 11.

The arrows 24 and 25 are also adjacent to the surface indications 15 and 21, respectively, and are located between the claws 10 and 11 and the surface indications 15 and 21.

Therefore, this cassette 1 can perform recording and reproduction using a cassette type tape recorder in exactly the same manner as a conventional tape cassette.

In this case, since the casing 5 is transparent or semi-transparent, the running state of the tape can be seen very clearly, and since the cassette structures 2 and 3 can be constructed as one piece, manufacturing is easy.

Further, on the A side 12 and the 8th side 20, there are arrows 24.2 adjacent to the nails io and ti, indicating which side the nails io and i1 are.
5, there is no chance of accidentally breaking off the claws 10 and 11.

As described above, the present invention attaches surface display marks such as A and B to indicate the distinction between the front and back surfaces on the front and back surfaces respectively close to the front and back accidental erasure prevention claws, Arrows pointing from each surface display mark to each erroneous erasure prevention claw were provided between the surface display marks and the erroneous erasure prevention claws on the front and back surfaces, respectively.

Therefore, even if the entire casing is made transparent or semi-transparent so that the running state of the tape can be clearly seen, the accidental erasure prevention claw on the undesired side may be operated incorrectly, resulting in an unnecessary accidental erasure prevention state or accidental erasure prevention state. There is no possibility of a state of prevention occurring, and it is extremely easy to distinguish between the front and back sides of the cassette.

In particular, provide an arrow on the front or back surface between the surface display mark provided on the front or back surface near the accidental erasure prevention claw and the accidental erasure prevention claw, so that this arrow points from the surface display mark to the accidental erasure prevention claw. This makes it possible to quickly recognize whether or not there is an accidental erasure prevention claw for that surface on the side just by looking at each surface, making it even more reliable to identify the accidental erasure prevention claw. Therefore, there is no risk of accidentally erasing the side that you want to prevent from erasing.

In addition, the arrows on each side indicating that they are accidental erasure prevention claws are molded integrally with the casing by adding unevenness to the casing, making it easy to form the arrows, and the arrows disappear from the casing. In addition, since the arrow is three-dimensional, there is less risk of misreading, and compared to attaching an arrow to a label affixed to the casing and extending the label to the very edge of the casing, the arrow can be easily seen. It is extremely easy to form this on the edge of the front or back surface of the casing so that it is as close to the erroneous erasure prevention claw as possible.

Therefore, the identification of the erroneous erasure prevention claw can be performed even more reliably.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a perspective view of side A, FIG. 2 is an enlarged view of a portion of FIG. 1, and FIG. 3 is a perspective view of side B.

Claims (1)

[Scope of utility model registration request] Inside a plate-shaped casing (this tape is stored in a movable manner and can be used on both the front and back sides, and each side of the casing is provided with a separate anti-erasing claw for each side) In the tape cassette, a surface display mark such as AB to indicate the distinction between the front and back surfaces is attached to the front and back surfaces of the front and back surfaces, respectively, in the vicinity of the front and back accidental erasure prevention claws. Arrows pointing from each surface display mark to each accidental erasure prevention claw are provided between these surface display marks and the accidental erasure prevention claws, and these arrows are connected to the casing by providing unevenness to the casing. A tape cassette characterized by being integrally molded.