JPH0340784Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cassette storage case for storing tape cassettes, and in particular has a chamber protruding inside the cassette storage case body, and a desiccant is stored in the chamber. This invention relates to a cassette storage case that can protect magnetic recording tapes from oxidation, mold, etc.

Prior Art It is well known that magnetic recording tape is generally used as a tape cassette by coating a mixture of magnetic powder and binder on a base made of polyester film and winding it around a tape roll provided inside a housing. It is as follows. By the way, the magnetic powder used in magnetic recording tapes has traditionally been γ-F _e2
It is also well known that O ₃ or cobalt-containing iron oxide, alloy magnetic powder, etc. are used.
Although these are excellent materials for high-density recording, they have the disadvantage of being easily oxidized.

Problem to be solved by the invention In order to eliminate this drawback, for example,
There is a method such as Japanese Patent No. 16416 that attempts to solve this problem by putting a desiccant inside the cassette storage case.

However, the desiccant that can be placed in the cassette storage case described in this publication must be solid and have a size above a certain level so that it does not disperse within the storage case, which limits the types of desiccant that can be used. There are drawbacks to this. In addition, desiccants generally do not have a permanent absorption effect, so they must be replaced as appropriate, but the technique described in this publication does not take any consideration to this point and has the drawback of being extremely inconvenient.

Furthermore, the technique described in this publication has the drawback that it requires a large surface area due to its structure, making it difficult to use a granular desiccant having a large water absorption capacity.

On the other hand, when tape cassettes are manufactured in factories and shipped to retailers, they are stored in a box-shaped storage case that has an opening on one side for inserting and removing the tape cassette, so that it is isolated from the outside air. It is shipped wrapped in plastic film. However, in order to record or play back a new tape cassette, this film is torn, so that the tape cassette after recording or playing comes into contact with the outside air. For this reason, for example, in hot and humid areas (Kyushu, Shikoku, Okinawa, Southeast Asia, etc.), after using the tape cassette, it may be necessary to
If the tape is stored unused for a year), fungi in the air will adhere to the outside surface of the tape and the inside surface of the reel flange that are in contact with the outside air during use, which will become damp and cause mold to grow.

In other words, normal tape cassettes are stored in a nearly sealed state inside the cassette storage case, so
Fungi in the air were exposed to high temperature and humidity, causing mold and other growth. Record a tape cassette like this again/
During playback, mold causes a decrease in S/N, dropouts, etc.

Therefore, the present applicant proposed Utility Model Application No. 176832/1983 as a cassette storage case that can solve the above problems. This cassette storage case has a chamber inside the main body of the cassette storage case that stores tape cassettes, which fits relatively into the reel hub hole of the stored tape cassette and has a ventilation hole that can communicate with the inside of the tape cassette. The structure was such that the desiccant that protrudes from the chamber and removes moisture is stored in the chamber separately from the outside of the main body of the cassette storage case. This cassette storage case prevents the growth of mold by removing moisture within the cassette storage case body.

By the way, plastic film is not completely waterproof; it allows a certain amount of moisture in the air to pass through it, but it does not allow fungi in the air to pass through it.

Therefore, as long as the cassette storage case is wrapped with this plastic film, mold will not develop due to fungi even if the humidity inside the cassette storage case body rises to some extent. For this reason,
When the plastic film is unopened and unused, there is no need for the desiccant to absorb moisture.

However, if the desiccant is stored in the chamber of the conventional cassette storage case and the period from factory shipment to the user is extremely long, the desiccant may be stored in the chamber before the user purchases it and uses it. etc. will absorb the moisture inside the cassette storage case and become worn out, making it unusable. Therefore, if it takes a long time for the user to use the conventional one,
Tear the plastic film to record or play a new tape cassette, and after recording or playing,
When the user stores this tape cassette for a long time,
After removing the cap that closes the chamber and inserting a new desiccant into the chamber, the tape cassette must be stored in the cassette storage case, which is time-consuming and troublesome to use.

Means for Solving the Problems The purpose of the present invention is to provide a tape cassette storage case that solves the above problems. The main body of the cassette storage case is provided with a protruding chamber that is partitioned from the main body and has a ventilation hole that fits relatively into the reel hub hole of the tape cassette and communicates with the inside of the tape cassette, and a desiccant that removes moisture is placed in the chamber. A cassette storage case that is housed separately from the outside, with paper or a thin film covering the ventilation holes pasted on the outer circumferential surface of the chamber to isolate the chamber from the storage case body. The structure is such that the paper or thin film can be peeled off or torn.

Function According to the present invention, a chamber having a ventilation hole that can communicate with the inside of the tape cassette is formed so as to be separated from the cassette storage case body, and the desiccant is stored in this chamber.

The ventilation hole in the chamber is closed when the cassette storage case is not in use, and is communicated with the inside of the tape cassette only when the case is in use.

Embodiment FIGS. 1 and 2 are a plan view and a side view of an embodiment of a cassette storage case according to the present invention. In both figures, 1 is a cassette storage case for storing cassettes of 1/2-inch video tapes, and is roughly composed of a lid part 2, a storage part 3, and a back part 4 that connects the lid part 2 and the storage part 3. By bending the back surface portion 4, the lid portion 2 rotates in the direction of arrow A to cover and close the storage portion 3. The storage section 3 has a rectangular frame section 5 vertically extending along the contour of the tape cassette to hold the tape cassette in a stable state without wobbling, and a bottom section 6 that accommodates the take-up reel and supply reel of the tape cassette on the upper surface. It has threaded portions 7 and 8 that protrude at the positions where it is located. Further, a horizontal edge 9 is provided around the frame 5 of the storage section 3, and the lid 2 has an edge 9 when closed at the peripheral edge of the top plate 10.
It has a U-shaped wall portion 11 facing the.

Reference numerals 12 and 13 designate cup-shaped protruding members serving as chamber portions, which are screwed into the threaded portions 7 and 8 to form housing portions 14 and 15.

Note that since the protruding members 12 and 13 have the same configuration, only the protruding member 12 side will be explained in FIG. 3, and the explanation of the protruding member 13 will be omitted.

In FIG. 3, the protruding member 12 has a ventilation hole (opening) 16 formed in a side surface 12a and a top surface 12b, which communicates the housing portion 14 with the outside of the protruding member 12.

Reference numeral 17 denotes adhesive paper, which is pasted on the side surface 12a and upper surface 12b of the protruding member 12 to close the small hole 16.

Reference numeral 18 denotes a desiccant, such as silica gel, which is packed in a bag and accommodated in the storage section 14.

When shipping the tape cassette storage case 1 from a factory, etc., the ventilation holes 16 of the protruding member 12 are covered with a pasting paper 17.
Therefore, the desiccant 18 is housed in the sealed housing section 14 in a state isolated from the outside. Therefore, before the tape cassette 19 is stored in the cassette storage case 1, the desiccant 18 is prevented from becoming unusable by absorbing the moisture in the cassette storage case 1.

As shown in FIG. 4, when storing the tape cassette 19 in the cassette storage case 1 for a long period of time, remove the adhesive paper 17 blocking the ventilation hole 16 from the outside using, for example, a sharp screwdriver or the like. The interior of the piercing accommodating portion 14 and the outside of the protrusion member 12 are communicated with each other. Next, the tape cassette 19 is inserted into the storage part 3 of the cassette storage case 1, the back part 4 is bent, and the lid part 2 is rotated in the direction of arrow A. While pressing the tape cassette 19 in the direction of arrow _X1 , the wall part 11 is fitted to the outside of the frame part 5 of the storage part 3 and the lid is closed to seal the inside of the cassette storage case 1 and isolate the tape cassette 19 from the outside air.

In the closed cassette storage case 1, the protruding member 12 is inserted into the reel hub hole 20a of the supply reel 20 of the tape cassette 19 stored in the storage section 3.
The protruding member 13 is relatively fitted into the reel hub hole 21a of the take-up reel 21. The height dimensions of the upper surfaces 12b and 13b of the protruding members 12 and 13 correspond to the reel hub hole 20.
The supply reel 20 and the take-up reel 21 are longer than the depth dimensions of the protruding members 1 and 21a, respectively.
2 and 13, the tape cassette ₁₉ moves in the direction of arrow X2 against the elastic force of the leaf spring 22, and is separated from the bottom surface 19a of the tape cassette 19. Therefore,
Both reels 20, 21 are lifted up in a floating state within the tape cassette 19, forming a gap 23 between the bottom surface 19a inside the tape cassette 19 and the lower flanges 20b, 21b.

The accommodating parts 14 and 15 have a ventilation hole 16 and a protruding member 1.
The tape cassette 19 is communicated with the inside of the tape cassette 19 through a gap 23 formed on the outer periphery of the tape cassette 19. Therefore, the desiccant 18 housed in the protruding members 12 and 13 absorbs moisture in the tape cassette 19 through the ventilation hole 16 and the gap 23, and removes mold from the surface of the tape 24 and the inside of the reel flanges 20 and 21. Prevent occurrence.

Therefore, the tape cassette 19 is stored in the sealed cassette storage case 1 isolated from the outside air in a stable state protected from external shocks, and the desiccant 18 protects the tape cassette 19 from
Since the internal moisture is absorbed and the product is stored in a dry state, even if it is not used for a long time in a humid area, when it is regenerated, it will be in good condition with no S/N drop or dropout due to mold growth. will be stored in

Note that when the desiccant 18 is exhausted, the protruding member 1
2 and 13 from the threaded parts 7 and 8, replace them with new desiccant, and then screw the protruding members 12 and 13 into the threaded parts 7 and 8 again.

Application Examples Although the above embodiment has been explained as a cassette storage case for storing 1/2-inch video tape cassettes, the case is not limited to this, and can be applied to, for example, 3/4-inch tape cassettes or audio compact cassettes. Of course.

In addition, although the explanation has been made using adhesive paper to close the ventilation holes of the protruding member, the openings are not limited to this, and for example, aluminum foil or a thin film made by vapor-depositing aluminum on paper can be attached to the protruding member. The closing accommodating portion may be sealed. Further, in the above embodiment, the accommodating part is formed by screwing the protruding member into the threaded part, but instead of the protruding member, for example, a cylindrical part having a relatively large opening through which desiccant can be taken in and taken out may be protruded into the cassette storage case. After the desiccant is inserted into the cylindrical part through this opening at the time of factory shipment, a thin film or the like may be attached to the cylindrical part to close the opening.

Effects As described above, the cassette storage case of the present invention fits relatively into the reel hub hole of the stored tape cassette inside the cassette storage case body that stores the tape cassette, and communicates with the inside of the tape cassette. A cassette storage case is a cassette storage case, which has a protruding chamber that is partitioned into the main body, and has a desiccant that removes moisture in the chamber, separated from the outside of the cassette storage case main body. A paper or a thin film is attached to the outer circumferential surface of the chamber so as to isolate the cassette from the inside of the storage case, and the paper or thin film can be peeled off or torn when the cassette storage case is used. , has the following features.

By storing desiccant etc. in the storage section of the cassette storage case in advance before shipping from the factory, etc., it is possible to prevent the desiccant from being consumed before the tape cassette is stored, and also to prevent the tape cassette from being used. It can be used easily by simply tearing off the paper or thin film that covers the opening before drying, and there is no hassle in storing it to prevent mold from forming on the tape surface, and when the desiccant is used up, it can be easily replaced with a new one. .

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view, respectively, of an embodiment of the cassette storage case according to the present invention, and FIG.
The figure is a vertical cross-sectional view showing an enlarged view of the main parts of the present invention.
This figure is a longitudinal cross-sectional view of the cassette storage case shown in FIGS. 1 and 2 in which the tape cassettes are stored and the lid is closed. 1...Cassette storage case, 2...Lid, 3...
... Storage section, 7, 8 ... Screw section, 10 ... Top plate, 1
2, 13...Protrusion member, 14, 15...Accommodating part,
16...Air vent, 17...Packing paper, 18...Drying agent, 19...Tape cassette, 20...Supply reel, 21...Take-up reel, 24...Tape.

Claims (1)

[Scope of Claim for Utility Model Registration] A ventilation hole is provided inside the main body of the cassette storage case that stores the tape cassette, which fits relatively into the reel hub hole of the stored tape cassette and communicates with the inside of the tape cassette. A cassette storage case, which has a chamber that is partitioned from the main body and is provided in a protruding manner, and a desiccant that removes moisture is stored in the chamber separately from the outside of the cassette storage case main body, A cassette in which paper or a thin film is attached to the outer circumferential surface of the chamber to block the ventilation hole so as to isolate it from the inside of the storage case body, and the paper or thin film can be peeled off or torn when the cassette storage case is used. storage case.