JPH0523511Y2 - - Google Patents

Description

[Detailed Description of the Invention] The disk cassette holder of the present invention will be explained according to the following items.

A. Field of industrial application B. Summary of the invention C. Background art D. Problem that the invention attempts to solve E. Means for solving the problem F. Example a Magnetic disk cassette [Fig. 1, Fig. 6, Fig. 7] ] b Disk cassette holder [Figures 1 to 6
Figure] b-1 Base sheet [Figure 1, Figure 2, Figure 4
Figures to Figures 6] b-2 Holding plate [Figures 1 to 6] b-2-a Storage recess [Figures 1, 3 to 6] b-2-b Holding shaft [First Figures 3 to 6] b-3 Holding the magnetic disk cassette [1st
b-4 Removal of magnetic disk cassette [1st
Figures, Figure 6] b-5 Folding of magnetic disk cassette holder [Figures 2 and 5] G. Effects of the invention (A. Field of industrial application) The present invention relates to a novel disk cassette holder. Specifically, for example, a recording medium disk having a center core provided at the center having an engagement hole that engages with a drive shaft provided in a recording/reproducing device such as a magnetic disk cassette is housed in a case, and the center core is engaged with the center core. This relates to a disk cassette holder that removably holds a disk cassette with a mating hole facing the outside, and has a relatively simple structure by using a part of the disk cassette to hold the disk cassette. Nevertheless, it is an object of the present invention to provide a new disk cassette holder which allows the disk cassette to be attached and detached in approximately one motion, and which also ensures that the disk cassette is held securely.

(B Overview of the invention) The present invention stores a recording medium disk having a center core in the center having an engagement hole that engages with a drive shaft provided in a recording/reproducing device, and houses the recording medium disk in a case. In a disk cassette holder that stores a disk cassette with the locking hole facing the outside, holding the disk cassette is
This is done by a holding part that removably engages with an engagement hole provided in the center core, and although it has a relatively simple structure, it is possible to attach and detach the disk cassette in about 10 minutes. This can be done by motion, and the state in which the disk cassette is held is reliably maintained.

(C. Background Art) Today, various types of recording media are used in video systems, audio systems, and information processing systems. (hereinafter referred to as a ``recording medium disk'').
There is.

Since it is most difficult for such recording media disks to have dust, dirt, moisture, oily substances, etc. attached to their recording surfaces, or for their recording surfaces to be damaged, it is best to handle them while stored in some kind of storage member. Desirably, for example, magnetic disks etc. are usually
It is rotatably housed in a suitable cassette case, and can be used in a recording/reproducing device as it is. That is, a magnetic disk is usually provided with a center core at its center, and an engagement hole is formed in the center core to engage a drive shaft provided in a recording/reproducing device, and the cassette case is provided with the above-mentioned center core. A hole approximately the same size as the center core is formed, and the magnetic disk is housed in the cassette case with the center core positioned in the hole formed in the cassette case.

(Problem to be solved by the invention D) By the way, for example, the magnetic disk 7 is sometimes used as a video recording medium for a so-called electronic still camera, and a magnetic disk cassette with such a purpose is not suitable for carrying outdoors. It is often done.

In such cases, if you carry the magnetic disk cassette casually in your pocket or bag, dirt and dust may get in through the holes in the cassette case, or you may accidentally drop it when you take it out. could be.

Therefore, it may be possible to store magnetic disk cassettes, etc. in a storage case similar to the storage case for storing tape cassettes, called a so-called compact cassette, and carry them around. Since the stored cassettes are not held securely,
If you open the storage case without paying attention to its orientation, the cassette will fall out as soon as you open it.

This kind of storage case is usually designed to store one cassette at a time, so the number of cases becomes unnecessarily large. Problems arise in that the cassette is increasingly unreliable to hold and its shape becomes larger.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the disk cassette holder of the present invention is designed to engage and disengage from the engagement hole provided in the center core of the recording medium disk housed in the disk cassette. It is provided with a holding part that can be freely engaged.

Therefore, according to the present invention, the disk cassette can be held in the disk cassette holder by engaging the center core of the recording medium disks stored therein with the holding portion, so that the disks in the disk cassette can be The disc cassette can be attached to and removed from the cassette holder in approximately one motion, and the state stored in the disc cassette holder is reliably maintained. Since it is located inside the , its size can be kept to the minimum necessary.

(F. Embodiment) Details of the disk cassette holder of the present invention will be described below with reference to embodiments shown in the accompanying drawings.

The embodiment shown in the drawings is an application of the present invention as a magnetic disk cassette holder.

An example of a magnetic disk cassette will be explained first, and then a magnetic disk cassette holder for holding the magnetic disk cassette will be explained.

(a. Magnetic disk cassette) [Fig. 1, Fig. 6,
FIG. 7] Reference numeral 1 denotes a magnetic disk cassette which is detachably held in a magnetic disk cassette holder to be described later, and this magnetic disk cassette 1 is used, for example, as a recording medium for a so-called electronic still camera.

2 is a cassette case of the magnetic disk cassette 1. The cassette case 2 is formed into a substantially square thin box shape, with an upper case half 3 and a lower case half 4 integrally connected to each other. Incidentally, one of the four corners 2a of the outer circumferential surface of the cassette case 2 is formed into an inclined surface that is cut into a substantially triangular shape. Both upper and lower case halves 3 and 4 are formed with central holes 5 and 5' located coaxially with each other at substantially the center thereof, and a substantially rectangular window 6 near one side edge. ，
Although not shown, positioning holes are formed at positions near the corner 2a and at other positions.

Reference numeral 7 denotes a magnetic disk rotatably housed inside the cassette case 2. The magnetic disk 7 has a magnetic layer (not shown) formed on one surface thereof, and a center core 8 fixed to the center thereof. A pentagonal engagement hole 9 is formed in the center of the center core 8, and a pentagonal engagement hole 9 is formed along one of the five sides of the engagement hole 9. A crescent-shaped slit 10 is formed. Therefore, when the drive shaft provided on the spindle of the recording/reproducing device is engaged with the engagement hole 9, the engagement hole 9
The inner circumferential surface of the slit 10 is bent to a certain extent in a portion extending parallel to the slit 10, so that the engaging shaft is tightly engaged with the slit 10. Therefore, the center core 8 has the center hole 5,
5'. Therefore, the engaging hole 9 always faces the outside of the cassette 2.

11, 11' (only one 11 is shown in the drawing) is formed at a position that includes the windows 6, 6' in a portion near one side edge of the outer surface of both the upper and lower case halves 3, 4. It is a rectangular shallow recess,
A shutter 12 is slidably provided in the recesses 11, 11'. The shutter 12 is bent to form a flat substantially U-shape when viewed from the side, and two parallel U-shaped shutters 12 facing each other are parallel to each other.
Two pieces 12a and 12b are provided in the recesses 11 and 11', respectively, and a claw portion (not shown) cut and raised from one piece 12a is provided at one side edge of the upper case half 3. By being slidably engaged with a narrow groove 13 formed in the cassette case 2, the cassette case 2 is prevented from coming off, and its direction of movement is guided. Further, a shutter stopper 14 having a certain degree of flexibility is provided at a position adjacent to the tip of the groove 13, and the shutter 12 has a stopper hole 15 formed near one end edge thereof. By being engaged with the tar stopper 14, the state in which the windows 6, 6' are in the closed position (hereinafter referred to as the "closed position") is maintained as shown in FIG. ing.

Incidentally, when the magnetic disk cassette 1 is installed in a predetermined cassette mounting section of the recording/reproducing apparatus, the shutter 12 in the closed position is opened by the shutter opening/closing mechanism provided on the recording/reproducing apparatus. 6' is moved to a fully open position (hereinafter referred to as the "open position"). still,
In FIG. 7, the shutter 12 is shown moved to a position where the windows 6, 6' are opened approximately two-thirds of the way.

As the shutter 12 is moved to the open position, the magnetic disk 7 is moved to the window 6, 6'.
The part corresponding to this will be exposed to the outside of the cassette case 2.

16 is a label affixed to the cassette case 2. The label 16 is provided so that most of the label 16 is located on the outer surface of the upper case half 3 between the center hole 5 and the other side edge, so that a person using the magnetic disk cassette 1 can read the recorded contents. You can freely write the index etc.

Reference numeral 17 denotes a counter that is rotatably provided with respect to the cassette case 2, and has a substantially keyhole-shaped engagement hole 18 formed in the center thereof, and has the same number of positions as the number of tracks that can be recorded on the magnetic disk 7. The click stop is now applied.

The counter 17 counts and displays the number of recorded tracks on the magnetic disk 7, and when the magnetic disk cassette 1 is installed in the recording/reproducing section, the engaging hole 18
An engaging shaft of a counting mechanism provided on the recording/reproducing unit side is engaged with the recording/reproducing unit, and is rotated by a predetermined angle corresponding to one track each time one track is recorded.

(b Disk cassette holder) [Figures 1 to 6] Reference numeral 19 denotes a disk cassette holder which can hold a plurality of the above-mentioned magnetic disk cassettes and can be folded into two. The holder 19 consists of a base sheet and a holding plate.

(b-1 Base Sheet) [Figures 1, 2, 4 to 6] 20 is a base sheet. The base sheet 2
0 is made of a relatively flexible synthetic resin. The direction diagonally downward is defined as the left side, and the direction diagonally upwardly right is defined as the right side.In the following description, directions will be referred to in this direction.

(b-2 Holding Plate) [FIGS. 1 to 6] Reference numerals 21 and 22 are holding plates for holding the magnetic disk cassette 1. The holding plates 21 and 22
has a length substantially equal to the length of the base sheet 20 in the front-rear direction, and the base sheet 2
The magnetic disk cassette 1 has a width slightly shorter than half the length in the left-right direction of the magnetic disk cassette 1.
The thickness of the cassette case 2 is more than twice that of the cassette case 2.

The holding plates 21 and 22 are fixed to one surface of the base sheet 20 by fixing means such as adhesive, while being spaced apart from each other in the left-right direction.

Note that the holding plates 21 and 22 do not necessarily have to be flexible, but in order to facilitate the removal of the magnetic disk cassette 1 held by them, they may be made of a material with a certain degree of flexibility. In this embodiment, it is preferably made of a slightly elastic synthetic resin.

(b-2-a Storage recess) [Figures 1, 3 to 6] 23, 24 and 25, 26 are the retaining plates 21 and 2
2, and one magnetic disk cassette 1 is stored in each of these storage recesses 23, 24 and 25, 26.

That is, the storage recesses 23, 24 and 25, 26 are located on the holding plates 21 and 22 so as to be spaced apart from each other in the front-rear direction, and the shape and size of their inner circumferential surfaces are approximately the same as the outer circumference of the cassette case 2 of the magnetic disk cassette 1. They have the same shape and size, and their depth is greater than the thickness of the cassette case 2. Notches 27 and 27', each having a substantially half-moon shape, are formed at approximately the center in the left-right direction of the front and rear inner surfaces of the storage recesses 23, 24 and 25, 26, respectively.

Note that each corner 23a, 24a, 25a, and 26a of each of the storage recesses 23, 24, 25, and 26 is formed obliquely like the one corner 2a of the cassette case 2.

(b-2-b Holding shaft) [Figures 1, 3 to 6] 28, 29, 30 and 31 are the storage recesses 2
3, 24, 25, and 26, that is, from a position corresponding to the engagement hole 9 formed in the center core 8 of the magnetic disk cassette 1. ,29,30
and 31 are integrally formed with the holding plates 21 and 22.

Each of the holding shafts 28, 29, 30, and 31 has four engaging pieces 32, 32, . In particular, it is formed to have a generally cylindrical shape as a whole, and the diameter of the cylindrical outer circumferential surface excluding the upper end is equal to the outer diameter of the engagement shaft of the spindle provided in the recording/reproducing device. The upper end of the retaining plate 2
It extends to a position slightly lower than the upper surfaces of 1 and 22.
Engagement portions 33, 33, . . . that protrude in a direction opposite to the axis side of the holding shafts 28, 29, 30, 31 are formed at the upper end portions of each of the engagement pieces 32, 32, . The engaging portions 33, 33, . . .
When viewed from the side, the engaging pieces 32,
32, . . . upper slopes 33a, 33a, .
and lower slopes 33b, 33b, . . . which are continuous with the lower ends of the upper slopes 33a, 33a, .
It is formed into a generally wedge-shaped shape.

In addition, among the bottom surfaces of the storage recesses 23, 24, 25, 26, the engaging portions 3 of the engaging pieces 32, 32, .
Holes 34, 34, . . . having substantially the same size as the planar shape of the engaging portions 33, 33, . . . are formed at positions facing 3, 33, . These holes 34, 34, . . . are holes provided for punching out the holding plate 21 and holding shafts 28, 29, and when the holding plate 22 and holding shafts 30, 31 are molded. . Therefore, if necessary, these holes 34, 34, . . . may be closed by appropriate means.

(b-3 Holding magnetic disk cassette) [1st
[FIG. 6] The above-described magnetic disk cassette 1 is held in the above-described magnetic disk cassette holder 19 in the following manner.

That is, as shown in FIG. 1, the magnetic disk cassette 1 is cut out so that the orientation of the cassette case 2 matches the orientation of the storage recess 23, that is, the four corners of the cassette case 2 are cut off diagonally. While aligning the center core 8 so that the corner 2a corresponds to one corner 23a of the storage recess 23, position the engagement hole 9 of the center core 8 at the upper end of the holding shaft 28, and then insert the cassette case 2. Press lightly from above. Then, the engaging pieces 32, 3 of the holding shaft 28
2, . . . are configured so that the diameter of the upper end thereof is reduced by the upper slopes 33a, 33a, . . . of the engaging portions 33, 33, . Since the holding shaft 28 is bent toward the axial center side, the holding shaft 28 is relatively inserted into the engagement hole 9. Then, when the cassette case 2 is accommodated in the storage recess 23, the engaging pieces 32, 3
Since the engaging portions 33, 33, . . . of 2, . Force will return it to its original state. As a result, the engaging portions 33, 33, . . . are engaged with the upper opening edge of the engaging hole 9 of the center core 8.
It is prevented from coming out from 8.

Therefore, no matter how the magnetic disk cassette holder 19 is oriented from this state, the state in which the magnetic disk cassette 1 is housed in the housing recess 28 is reliably maintained.

Furthermore, since one corner 23a, 24a, 25a and 26a of the inner circumferential surface of the storage recesses 23, 24, 25 and 26 has the same shape as one corner 2a of the cassette case 2, the magnetic disk cassette 1 are these storage recesses 23, 24, 25 and 26
In this case, the upper case half 3 is always stored in the direction in which it is facing. Therefore, when the magnetic disk cassette 1 is stored in the storage recesses 23, 24, 25, and 26, the written portion of the label 16 affixed to the cassette case 2 is always aligned with the holding plate 2.
1, 22, so the magnetic disk cassette 1 is placed in the storage recess 23, 24, 2.
The contents written on the label 16 can be seen without taking it out from the label 5,26.

(b-4 Removal of magnetic disk cassette) [FIGS. 1 and 6] Further, the magnetic disk cassette 1 held in the magnetic disk cassette holder 19 is removed, for example, as follows.

That is, a storage recess in which the magnetic disk cassette 1 to be taken out is stored, for example, 24 notches 2.
7, 27' and insert the corresponding cassette case 2.
Grab it and pull it upwards. At this time, it is preferable to press the area around the storage recess 24 on the upper surface of the holding plate 21 with the other hand. Then, the engaging pieces 32, 32, .
3, 33, ... lower slope 33b, 33b, ...
... is pressed from a direction substantially perpendicular to these slopes, and is bent toward the axis of the holding shaft 29 so as to reduce the diameter of its upper end, so that the holding shaft 29 is relatively It will come off through the engagement hole 9 of the center core 8. Note that when the holding shaft 29 comes out of the engagement hole 9 of the center core 8, the engagement pieces 32, 3
2,... will return to their original state due to the elastic force accumulated by being bent as described above.

(b-5 Folding of magnetic disk cassette holder) [FIGS. 2 and 5] The magnetic disk cassette holder 19 can be folded into two.

That is, as described above, the base sheet 20 of the magnetic disk cassette holder 19 is flexible, and the two retaining plates 21 and 22 are positioned side by side with respect to the base sheet 20. The base sheet 20 can be folded as shown in FIGS. 2 and 5 by bending the base sheet 20 so that the two holding plates 21 and 22 face each other at the center in the left-right direction.

However, the magnetic disk cassette holder 19
When folded in this manner, storage recesses 23 and 25 and 24 and 26 are opposed to each other, thereby defining two spaces completely isolated from the outside. Therefore, the storage recess 23,
The magnetic disk cassettes 1, 1, . . . stored in 24, 25, and 26 are located in either one of the two spaces, thereby providing dustproof protection for the magnetic disks 7, 7, . , the waterproof effect will be further enhanced.

In addition, as mentioned above, the holding shafts 28, 29, 30
Since the upper ends of the magnetic disk cassette holders 19 and 31 are located slightly lower than the upper surfaces of the holding plates 21 and 22, even when the magnetic disk cassette holder 19 is folded as described above, the opposing parts do not come into contact with each other.

Although not shown, the base sheet 2
A pair of stop members that are engaged with each other are provided at both left and right ends of the surface opposite to the holding plates 21 and 22 of the magnetic disk cassette holder 19, and these stop members are engaged when the magnetic disk cassette holder 19 is folded. It is designed to be maintained by this.

(G. Effect of the invention) As is clear from the above description, the disk cassette holder of the present invention has a center core provided at the center, which has an engagement hole that engages with a drive shaft provided in a recording/reproducing device. A disk cassette holder for storing a disc cassette in which a recording medium disk is stored in a case and the engaging hole of the center core is exposed to the outside, the disk cassette holder being capable of being freely engaged with and detached from the engaging hole provided in the center core. It is characterized by forming a holding part that can be engaged.

Therefore, according to the present invention, the disk cassette can be held in the disk cassette holder by engaging the center core of the recording medium disk stored therein with the holding portion.
The disk cassette can be attached and detached from the disk cassette holder in approximately one motion, and the state in which the disk cassette is housed in the disk cassette holder is reliably maintained.
Moreover, since the holding part is located inside the predetermined space in which the disk cassette is housed, its size can be kept to the minimum necessary size.

In the above-mentioned embodiment, a storage recess is formed in which the disk cassette is stored almost tightly, and a holding portion is provided in the storage recess. Since the disk cassette held in the holding part can be prevented from rotating around the holding part, the disk cassette can always be held in a fixed orientation.

In the embodiment described above, the holding part is engaged by the engagement hole of the center core being fitted into the holding part, or by the engagement hole being removed from the holding part. Although the disk cassette is structured to be bent so that it can be easily inserted and removed, it is possible to more easily attach and detach the disk cassette to and from the holding portion.

In the above-mentioned embodiment, four disk cassettes can be stored in one disk cassette holder, but if the disk cassette holder of the present invention is formed into an album shape, it can store a large number of disk cassettes. You can also handle it like filing.

[Brief explanation of the drawing]

The drawing shows an example of an embodiment in which the disk cassette holder of the present invention is applied as a foldable magnetic disk cassette holder, and FIG. 2 is a perspective view of the folded state, FIG. 3 is a plan view of the opened state, and FIG. 4 is a sectional view taken along the - line of FIG. 3.
5 is a cross-sectional view taken along the line -- in FIG. 2, FIG. 6 is an enlarged sectional view taken along the line -- in FIG. 1, and FIG. 7 is an enlarged perspective view showing an example of the magnetic disk cassette. Explanation of symbols, 1...Disk cassette, 2...
Case, 7... Recording medium disk, 8... Center core, 9... Engaging hole, 19... Disk cassette holder, 28, 29, 30, 31... Holding section.

Claims (1)

[Claims for Utility Model Registration] A recording medium disk having a center core provided at the center having an engagement hole that is engaged with a drive shaft provided in a recording/reproducing device is housed in a case, and the center core is engaged with the recording medium disk. A disk cassette holder for storing a disk cassette with a hole facing the outside, characterized in that a holding portion is formed to detachably engage with an engagement hole provided in the center core. holder.