JPH0740576U - Magnetic tape cassette storage case - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a case for storing a magnetic tape cassette, which has a good operability for loading and unloading the cassette case and which can avoid breakage of the tape edge or the like due to looseness of the cassette in the cassette storage state. . A magnetic tape cassette 20 having a pair of hubs wound with a magnetic tape 30 in a case formed by upper and lower halves, and the magnetic tape wound along the inner surface of a lower flange 23 of the hub is stored. It is possible to use the lower lid 3 with the hub locking projections 4 that fit into the center holes of the hubs from the lower side of the cassette, and the upper lid 2 with the recess at the location corresponding to the upper end of the hub as the hinge part. It is a case 1 for storing a magnetic tape cassette that is open and closed. Then, a cushion material 10 corresponding to almost the entire surface of the magnetic tape cassette is provided on the inner surface of the upper lid corresponding to the upper side of the magnetic tape cassette 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case for storing a magnetic tape cassette, and in particular, it has a structure in which a hinge portion connecting an upper lid and a lower lid can be opened and closed, and accommodates a relatively large magnetic tape cassette with a large winding amount of magnetic tape. It relates to a case for storing a magnetic tape cassette.

[0002]

[Prior art]

 Conventionally, in order to prevent foreign matter such as dust from adhering to the surface of an information recording medium such as a magnetic tape, damage to the tape, or damage to the magnetic tape cassette, a magnetic tape cassette storage case has been used. It is used. This storage case is, for example, one in which an upper lid and a lower lid are connected so as to be able to face each other via a hinge portion, and a cassette storage space is formed on the facing surfaces of these housings, and the upper and lower lids are fitted to each other. Is provided, and for example, an appropriate engaging claw and an engaging groove that engage with each other are formed on the peripheral wall surface on the open side of the overlapping part, and the upper cover and the lower lid are formed by detaching the engaging claw and the engaging groove. It is known to open and close. In recent years, since the recording / reproducing density has been increasing, the above-mentioned storage case is becoming more important than ever. In particular, for example, a commercial magnetic tape cassette using a magnetic tape of 3/4 inch width is considerably large, and since the magnetic tape wound is large, the weight thereof is considerably heavy. It is further desired to improve the function of cassette protection.

An example of a housed state of the above-mentioned commercial magnetic tape cassette will be described with reference to FIG. The storage case 60 shown in FIG. 6 has a configuration in which the upper lid 2 and the lower lid 3 are openably and closably coupled via a hinge portion (not shown). The lower lid 3 is provided with hub locking protrusions 4 which are fitted into the center holes 24 of the hub 21 from the lower side of the cassette, and the upper lid 2 is provided with a recess 5 at a position corresponding to the upper end of the hub 21. ing. Further, the magnetic tape cassette 21 is a case formed by winding a magnetic tape 30 in a case formed by upper and lower halves and incorporating a pair of the hubs 21 having upper and lower flanges 22 and 23. The hub 21 is a pressing member. Is urged downward by the cassette. That is, the pressing member is composed of a button 25, a part of which is exposed on the outer surface of the cassette case, and a coil spring 26 that biases the button 25 inward of the cassette. The magnetic tape 30 is wound along the inner surface of the lower flange 23 of the hub 21 in a cassette usage mode.

When the magnetic tape cassette 20 is stored in the conventional storage case 60 having such a structure, the upper and lower lids 2 and 3 are, of course, opened and put in the lower lid 3 side. Although the upper lid 2 is operated to be closed, the magnetic tape cassette 20 is housed as shown in FIG. 6 in a state where the hub locking protrusion 4 formed on the bottom surface of the lower lid 3 and the center hole 24 are engaged with each other. ing. That is, the magnetic tape cassette 20 is stored in a state of being biased toward the lower lid 3 side. For example, a gap t1 is formed between the upper surface of the magnetic tape cassette 20 and the inner surface of the storage case, and the upper surfaces of the recess 5 and the button 25 are arranged. And a gap t2 is formed. Since the space is formed in this way, when the storage case 60 is handled or dropped relatively roughly, the magnetic tape cassette 20 is loose, and moves in the direction of arrow C in the figure, for example. At times, the magnetic tape 30 wound around the hub 21 may collide with the inner surface of the upper flange 22. On the other hand, as a result of the use of the magnetic tape cassette 20, a so-called winding disorder projection portion 31 which is partially disordered upward in the tape width direction is generated in the magnetic tape 30 as shown in the drawing.

[0007] Therefore, as a result of the above-mentioned winding disorder projecting portion 31 being strongly pressed by the upper flange 22 due to the case drop or the like, there is a problem of so-called tape end bending in which the winding disorder projecting portion 31 is bent. Such damage to the tape end causes, for example, audio signal dropout, output drop, and runnability, and in severe cases, tape run becomes impossible. Such a problem is extremely important particularly in magnetic tape cassettes used for commercial purposes.

Therefore, conventionally, for example, in Japanese Unexamined Patent Publication No. 4-106286, a protrusion is appropriately provided on the inner wall of the upper surface of the storage case, and the protrusion 26 presses the button 26 shown in FIG. 6 from above. Is disclosed. However, with such a structure, not only can the rattling of the main body of the magnetic tape cassette not be suppressed, but also that the button 26 can be locked without rattling from the viewpoint of dimensional accuracy. It is difficult, and since the weight of the wound magnetic tape is large, it is unavoidable that the magnetic tape strongly hits the inner surface of the upper flange due to a shock when dropped.

Further, in Japanese Unexamined Patent Publication No. 5-85585, for the purpose of protecting the magnetic tape cassette from an impact caused by dropping the storage case, etc., a cushioning member made of a low-repulsion elastic rubber material is used, and a cassette is used. A configuration is disclosed in which the cassette case is fixed by sandwiching the four corners of the case. In the case of this configuration, the cushioning member has a relatively complicated shape, and four cushions are incorporated in each of the upper lid side and the lower lid side, and the assembling thereof is relatively troublesome. In addition, the provision of the cushioning member also on the lower lid side poses a problem in insertion operability when storing the cassette case. That is, since the cushioning member is made of rubber, the cassette case cannot be slid and positioned at a predetermined position during storage. Furthermore, since the four corners of the cassette case are positioned by pressing the four corners of the cushioning member, there is little play in the dimensions, which tends to promote a reduction in cassette storage operation. In addition, this storage case is made of synthetic resin and its size is about 20 to 40 cm in length and width in the case of commercial use, so it may warp due to long-term use. Since there is a case where the cassette case is relatively deformed, the four corners of the cassette case are clamped to fix the cassette case as described above, which tends to promote a decrease in cassette storage operation.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned problems, and has a good operability for loading and unloading a cassette case, and a tape due to looseness of the cassette when the cassette is stored. An object of the present invention is to provide a case for storing a magnetic tape cassette, which can avoid damage such as bending of the edge of the tape.

[0009]

[Means for solving problems]

 The above object of the present invention is to provide a magnetic tape cassette having a pair of hubs having magnetic tapes wound in a case formed by upper and lower halves, and the magnetic tapes being wound along an inner surface of a lower flange of the hubs. The lower lid has a hub locking protrusion that fits into the center hole of the hub from the bottom of the cassette, and the upper lid has a recess at a location corresponding to the upper end of the hub. In the case for storing the magnetic tape cassette openably and closably, a cushion material corresponding to almost the entire surface of the magnetic tape cassette is provided on the inner surface of the upper lid corresponding to the upper side of the magnetic tape cassette. This can be achieved by the characteristic magnetic tape cassette storage case. In addition, the cushion material is made of a sheet material, and the sheet material is configured to have a plurality of air bubbles in which air is independently sealed or is made of sponge, or the cushion material is made of a sheet material, and It is possible to adopt a configuration having a pocket into which a card can be inserted, and a configuration for storing a magnetic tape cassette having a tape width of 1/2 inch or more.

[0010]

Embodiment

 Hereinafter, a magnetic tape cassette storage case of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an opened state of a storage case for a magnetic tape cassette having a width of 3/4 inch for business use, which is an embodiment of the present invention. FIG. 2 is a sectional view of a portion corresponding to the line AA in FIG. 1 when the storage case of the present invention stores the magnetic tape cassette, and FIG. 3 is a partially enlarged perspective view of the cushion member shown in FIG. It is a figure.

As shown in FIGS. 1 and 2, the storage case 1 has a structure in which a lower lid 3 and an upper lid 2 are openably and closably connected via a hinge portion 9. The lower lid 3 has hub locking protrusions 4 which are fitted into the center holes 24 of the hub 21 from the lower side of the cassette, and the upper lid 2 has a recess 5 at a position corresponding to the upper end of the hub 21. There is. The storage case 1 is integrally molded of synthetic resin. A lock member 8 and a grip portion 7 are formed on the lower lid 3 on the side opposite to the hinge portion 9. The lock member 8 has a structure that can be appropriately engaged with the upper lid 2 when the upper and lower lids are closed. The grip portion 7 has a structure that overlaps with the grip portion 7 on the upper lid 2 side to form one grip portion. Further, the magnetic tape cassette 21 has a pair of the hubs 21 having the upper and lower flanges 22 and 23 in which the magnetic tape 30 is wound inside the case formed by the upper and lower halves 28 and 29, and the hub 21 is pressed. The member 18 urges the cassette downward. The pressing member 18 is composed of a button 25, a part of which is exposed on the outer surface of the cassette case and is biased inward of the cassette by a coil spring 26. The lower end portion of the button 26 is at the center of the upper end of the hub 21. Is being pressed appropriately. The magnetic tape 30 is wound along the inner surface of the lower flange 23 of the hub 21 due to its usage and its own weight. In this embodiment, an important configuration is that the cushion material 10 corresponding to almost the entire surface of the magnetic tape cassette 20 is provided on the inner surface of the upper lid 2 corresponding to the upper side of the magnetic tape cassette 20. . For example, as shown in FIG. 3, the cushion member 10 may be configured such that a sheet base material 12 is independently provided with a large number of air bubble portions 11 in which air is enclosed. The cushion member 10 need only be attached to the inner surface of the upper lid 2 and can be provided very easily.

When the magnetic tape cassette 20 is stored in the storage case 1 having the above-mentioned structure, the magnetic tape cassette 20 can be stored, for example, in an imaginary line in FIG. As shown in FIG. 5, the cassette front side is put into the storage recess 15 of the lower lid 3 so that it slides (in the direction of arrow B) to store, and the cassette is put on the lower lid 3 side and then the upper lid 2 is closed. To do. This operability is good without any adverse effect even if the storage case 1 is deformed such as warped. The magnetic tape cassette 20 is housed as shown in FIG. 2 in a state in which the hub locking protrusion 4 formed on the bottom surface of the lower lid 3 and the center hole 24 are engaged with each other. As described above, the storing operation of the magnetic tape cassette 20 is extremely easy.

Then, when the magnetic tape cassette 20 moves upward (in the direction of arrow C) in FIG. 2 due to an impact such as a drop of the storage case 1, the magnetic tape cassette is attached to the cushion member 10. The upper surface of 20 comes into soft contact, and the shock of dropping is buffered. Therefore, even if the magnetic tape 30 comes into contact with the inner surface of the upper flange 22 due to its weight, the strength of the contact is extremely weakened, so that tape damage such as winding disorder and breakage of the tape edge of the protrusion 31 is avoided. can do. Further, even if the button 25 comes into contact with the concave portion 5 due to a fall or the like, the cushion member 10 is also provided in the concave portion 5, so that the movement of the magnetic tape 30 is suppressed or moved. The contact between the winding disorder projection 31 and the inner surface of the upper flange 22 can be weakened. In FIG. 3, the cushion material 10 is made of a sheet material and is provided with a large number of air bubble portions that independently seal air, but the present invention is not limited to such a configuration. For example, as shown in FIG. 4, a sponge having an appropriate thickness t may be used.

Further, the present invention may be configured as shown in FIG. In FIG. 5, the same parts as those shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. This embodiment is basically the same as the embodiment shown in FIG. 1, except that the cushion material 10 is made of a sheet material and, for example, the index of the recorded contents of the magnetic tape cassette is described. It has a pocket 50 into which an information card 51 can be inserted.

In the above embodiment, the case for storing the magnetic tape cassette having a tape width of 3/4 inch has been described. For example, the tape width is ½ inch or more and the tape width is relatively large. It can be applied to a large magnetic tape cassette. Furthermore, in each of the above embodiments, the cushion member 10 is formed in a sheet shape, but the present invention is particularly in a sheet shape as long as it is arranged over substantially the entire upper surface of the magnetic tape cassette 20. The present invention is not limited to this form, but can have any appropriate configuration.

[0016]

[Effect of device]

 As described above, according to the present invention, the lower lid is provided with the hub locking protrusions that are fitted into the center holes of the hubs from the lower side of the cassette, and the upper lid is provided with the recessed portion at a position corresponding to the upper end of the hub. Is a magnetic tape cassette housing case that can be opened and closed by a hinge part, and a cushion material corresponding to almost the entire cassette case is provided on the inner surface of the upper lid corresponding to the upper side of the magnetic tape cassette. When the tape cassette is stored, the magnetic tape cassette can be stored by sliding in the storage recess of the lower lid, and its operability is good. Further, when a shock such as a drop of the storage case is applied, the cushion member can be softly contacted with the upper surface of the magnetic tape cassette, so that the shock of the drop is buffered and wound on the hub. Even if the magnetic tape comes into contact with the inner surface of the upper flange due to its weight, the contact strength is extremely weakened, and it is possible to avoid the tape damage such as the breakage of the tape edge as in the past. Excellent protection for tape cassettes.

[Submission date] March 1, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

Further, in Japanese Unexamined Patent Publication No. 5-85585, for the purpose of protecting the magnetic tape cassette from an impact caused by dropping the storage case, etc., a cushioning member made of a low-repulsion elastic rubber material is used, and a cassette is used. A configuration is disclosed in which the cassette case is fixed by sandwiching the four corners of the case. In the case of this configuration, the cushioning member has a relatively complicated shape, and four cushions are incorporated in each of the upper lid side and the lower lid side, and the assembling thereof is relatively troublesome. In addition, the provision of the cushioning member also on the lower lid side poses a problem in insertion operability when storing the cassette case. That is, since the cushioning member is made of rubber, the cassette case cannot be slid and positioned at a predetermined position during storage. Furthermore, since the four corners of the cassette case are positioned by pressing the four corners of the cushioning member, there is little play in the dimensions, which tends to promote a reduction in cassette storage operation. In addition, this storage case is made of synthetic resin and its size is about 20 to 40 cm in length and width in the case of commercial use, so it may warp due to long-term use. to also be relatively large deformation, by holding the four corners of the cassette cases as mentioned above because it is configured to fix the cassette case, it tended to promote the reduction of the cassette housing operation.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

[Problems to be solved by the device]

This invention is was made in view of the above problems, well input is operability out of the cassette case, besides the breakage of breaking or the like of the tape edge due to rattling of the cassette in the cassette accommodated state It is an object of the present invention to provide a magnetic tape cassette storage case that can be avoided.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

[Means for solving problems]

The above object of the present invention is to provide a magnetic tape cassette having a pair of hubs having magnetic tapes wound in a case formed by upper and lower halves, and the magnetic tapes being wound along an inner surface of a lower flange of the hubs. The lower lid has a hub locking protrusion that fits into the center hole of the hub from the bottom of the cassette, and the upper lid has a recess at a location corresponding to the upper end of the hub. In the case for storing the magnetic tape cassette openably and closably, a cushion material corresponding to almost the entire surface of the magnetic tape cassette is provided on the inner surface of the upper lid corresponding to the upper side of the magnetic tape cassette. This can be achieved by the characteristic magnetic tape cassette storage case. In addition, the cushion material is made of a sheet material, and the sheet material is configured to have a plurality of air bubbles in which air is independently sealed or is made of sponge, or the cushion material is made of a sheet material, and configuration with a card pluggable pocket, further, configured to tape width for accommodating a magnetic tape tape cassette in the tape width more than 1/2 inch, employed as construction weight you accommodating more magnetic tape cassettes 350g can do.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

In the above embodiment, the case for storing the magnetic tape cassette having a tape width of 3/4 inch has been described. For example, the tape width is ½ inch or more and the tape width is relatively large. It can be applied to a large magnetic tape cassette. Regarding the weight, the effect is seen with a relatively large cassette, but a remarkable effect is seen with a weight of 350 g or more from the viewpoint of preventing dropout of audio signals and reduction in output. In the above, the cushion member 10 is formed in a sheet shape, but the present invention is not particularly limited to a sheet shape as long as it is arranged over substantially the entire upper surface of the magnetic tape cassette 20. The configuration can be appropriately adopted.

[Brief description of drawings]

FIG. 1 is a perspective view showing an opened state of a magnetic tape cassette housing case according to an embodiment of the present invention.

2 is a cross-sectional view of a portion taken along line AA of FIG. 1 in a state where a cassette is stored in a magnetic tape cassette storage case according to the present invention.

FIG. 3 is an enlarged perspective view of a cushion member according to the present invention.

FIG. 4 is an enlarged perspective view showing a modified example of the cushion member according to the present invention.

FIG. 5 is a perspective view showing an opened state of a magnetic tape cassette housing case according to another embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of a conventional storage case.

[Explanation of symbols]

 1 Magnetic Tape Cassette Storage Case 2 Upper Lid 3 Lower Lid 4 Hub Locking Protrusion 5 Recess 7 Gripping Part 8 Lock Member 9 Hinge Part 10, 40 Cushion Member 11 Bubble Part 20 Magnetic Tape Cassette 21 Hub 30 Magnetic Tape

[Procedure amendment]

[Submission date] March 1, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (4)

[Scope of utility model registration request] 1. A magnetic tape cassette comprising a pair of hubs having magnetic tapes wound in a case formed by upper and lower halves, and the magnetic tapes wound along an inner surface of a lower flange of the hubs. A hinge is provided to open and close a lower lid provided with a hub locking projection that fits into the center hole of the hub from the lower side of the cassette and an upper lid provided with a recess at a location corresponding to the upper end of the hub. In the connected magnetic tape cassette storage case, a cushion material corresponding to almost the entire surface of the magnetic tape cassette is provided on the inner surface of the upper lid corresponding to the upper side of the magnetic tape cassette. Storage case. 2. The magnetic tape according to claim 1, wherein the cushion material is formed of a sheet material, and the sheet material is formed of a form having a plurality of air bubbles in which air is independently sealed or a sponge. Case for storing cassettes. 3. The magnetic tape cassette storage case according to claim 1, wherein the cushion material is made of a sheet material and has a pocket into which a card can be inserted. 4. The magnetic tape cassette storage case according to claim 1, wherein the magnetic tape cassette has a tape width of ½ inch or more.