JP3358061B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge in which a disk as a storage medium such as an optical disk or a magneto-optical disk is housed in a hard case so as to be able to be taken in and out.

[0002]

2. Description of the Related Art A disk cartridge of this kind is known, for example, from Japanese Patent Application Laid-Open No. Hei 5-242626, and has an opening at the rear end of a main body case so that a disk can be taken in and out for replacement. The opening can be opened and closed by a lid that rotates around a pivot.

[0003]

However, in the above-mentioned disk cartridge, when the disk is taken out, the lid is opened at the maximum opening angle (180 degrees) and the opening is inadvertently turned downward. It may fall down and be damaged. Further, there is a possibility that a hand may inadvertently touch the recording / reproducing area of the disk when removing the disk.

It is an object of the present invention to provide a disk cartridge which allows a disk to be safely inserted into and removed from a main body case without touching the disk.

[0005]

SUMMARY OF THE INVENTION The present invention provides a main body case 1 in which a disk 2 as a storage medium is rotatably housed.
Further, a disc cartridge having a window 3 for signal reading and a drive shaft insertion hole 4 is provided, and the window 3 and the drive shaft insertion hole 4 are closed and opened by a shutter 5.

According to the present invention, in the disk cartridge having the above structure , the disk 2 is ejected from the rear side surface 7 of the main body case 1.
And Yes in the opening 9 for providing placed, comprises a disk holder 10 that is inserted and removed freely mounted through the opening 9 to the inside of the main body case 1, the disc holder 10, the left and right of the holder main body 10a And protrudes forward along the inner surfaces of the left and right side walls 15, 15 of the main body case 1 to hold and hold two points P ₁ , P ₂ on the outer periphery of the inner side of the main body case from the center of the disk 2. An upper rib 14 and a lower rib 14 which have a pair of left and right elastic arms 12, which are freely expandable and contractible, and which receive upper and lower surfaces of an outer peripheral edge of the disk above and below a tip of the left and right elastic arms 12, respectively, on the disk engaging surface side. 1
4 are respectively formed so as to protrude, and the holder body 10a
A groove 21 provided at a central portion between the elastic arms 12 on the inner side of the front surface of the disk 2 and three elastic arms 12 and 12 sandwich the outer periphery of the disk 2 at three points, thereby forming the disk holder 1.
Reference numeral 0 indicates that the disc 2 can be removed from the main body case 1 while holding the disc 2 .
On the inner left and right sides, slopes 17 and 17 facing the opening 9 are provided.
Are formed, and the distal ends of the left and right elastic arms 12 are provided.
The slopes 20 and 2 that come into contact with the slopes 17 and 17
0, and the disk holder 10 is
Completely inserted through the opening 9
The slopes 20 at the ends of the elastic arms 12
Comes into surface contact with the slopes 17 inside the body case 1.
The distal ends of the elastic arms 12
It is characterized in that it is held in an expanded state .

[0007]

In the disk holder 10, the holder body 10
left and right elastic arms 12 projecting forward from
Numeral 12 holds and holds two points P ₁ and P ₂ on the outer periphery of the inner side of the main body case from the center of the disk 2 so that the two points P ₁ and P ₂ do not come off in the vertical direction by the upper and lower ribs 14. Moreover, the two elastic arms 12 inside the front surface of the holder body 10a
The outer periphery of the disk 2 is also sandwiched between the grooves 21 provided at the center between the twelve. Then, when the disk holder 10 is taken in and out of the main body case 1, the left and right elastic arms 12
Are along the inner surfaces of the left and right side walls 15 of the main body case 1. Therefore, when removing the disk holder 10 from the main body case 1, the left and right side walls 1
Since the expansion and deformation of the left and right elastic arms 12 is restricted by 5 and 15, the disk 2 is
The disk 2 can be reliably taken out together with the disk holder 10 from the main body case 1 without being pulled out and left behind between the 2 and 12. When the disk holder 10 is pulled out of the main body case 1 and the disk holder 10 is in a horizontal posture, the two elastic arms 1
The disk 2 supported between the two elastic arms 12 does not fall in the vertical direction, that is, downward.
When both ends of the elastic arms 12
The disc 2 does not fall off from the front end side of the disc. When replacing the disk 2, by holding the holder body 10 a as a hand and pulling the disk 2 forward between the two elastic arms 12 with the other hand, the opposing distance between the distal ends of the two elastic arms 12 and 12 becomes larger. As it expands and deforms to the outer diameter,
The disk 2 can be easily detached from the disk holder 10 as it is. In order to accommodate the disc 2 in the main body case 1, the outer periphery of the disc 2 is held between the pair of elastic arms 12 and 12 and the groove 21, and the disc holder 10 is attached to the main body case 1 with the holder main body 10 a as a hand. Is inserted from the elastic arm 12 side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a disk cartridge according to the present invention has a thin rectangular main body case 1.
A disk 2 such as an optical disk in which signals such as video, audio, and information are stored on both upper and lower surfaces is rotatably accommodated. As shown in FIG. 3, the body case 1 is formed by integrally joining plastic upper and lower cases 1a and 1b with each other. In the upper case 1a and the lower case 1b, a signal reading window 3 is opened rearward from the left-right central portion of the front side, and substantially the center of the upper surface of the upper case 1a and the lower surface of the lower case 1b. A drive shaft insertion hole 4 is opened at the center. When not in use, the window 3 and the drive shaft insertion hole 4 are closed by a shutter 5 that slides in the left and right direction on the front side of the main body case 1. Upper case 1a
A boss 6 is provided on each inner surface of the lower case 1b so as to surround the drive shaft insertion hole 4, as shown in FIG.

In FIG. 1 and FIG. 3, an opening 9 for inserting and removing the disc 2 is provided in the rear side surface 7 of the main body case 1.
Are provided over the entire length in the left-right direction. The opening 9 is opened and closed by a plastic disk holder 10. The disk holder 10 includes a flat holder body 10a.
At the rear end, there is provided a lid portion 11 which completely closes the opening 9 and is provided on the left and right sides of the holder main body 10a so as to protrude forward along the inner surfaces of the left and right side walls 15 and 15 of the main body case 1. And a pair of elastic arms 12 that can be expanded and contracted.

The pair of left and right elastic arms 12, 12 is shown in FIG.
As shown in the figure, two points P ₁ and P ₂ on the outer periphery of the inner side of the main body case from the center of the disk 2 are held together. As shown in FIG. 5, upper and lower ribs forming the groove 13 are formed to protrude above and below the distal end of each elastic arm 12 on the disk engaging surface side. The groove 13 is formed in a trapezoidal cross section, and the lower surface of the upper rib 14 and the upper surface of the lower rib 14 are formed on upper and lower slopes having a slope that gradually expands toward the outside of the groove. The front and back of the outer peripheral edge of the disk 2 are received between the slopes of the upper and lower ribs 14. The groove 13 is replaced with a trapezoidal cross section,
It can also be formed in a V-shaped cross section.

In FIG. 2, a release member 16 for expanding the elastic arms 12 of the disk holder 10 is provided inside the main body case 1 near the front end of each of the inner surfaces of the left and right side walls 15. . The release member 16 has a slope 17 formed on a surface facing the opening 9, and
A sharp angled depression 19 is formed between the inner surface of 5 and the slope 17. The distal end of the elastic arm 12 has the release member 1
6 is provided with a slope 20 that abuts and engages with the slope 17.

Thus, when the elastic arms 12 are inserted along the inner surfaces of the left and right side walls 15 along with the insertion of the disk holder 10 into the main body case 1 through the opening 9, the elastic arms 12 The tip is the release member 16.
16 (the two-dot chain line in FIG. 2). Further, as the elastic arms 12 are inserted deeper into the body case 1, two points on the outer periphery of the disk 2 while the distal ends of the elastic arms 12 slide on the slopes 17 of the release members 16. It expands and deforms away from P ₁ and P ₂ . As shown in FIG. 1, at the same time when the disk holder 10 is completely inserted, the slopes 20 at the distal ends of the elastic arms 12 are adjusted to the slopes 17 of the release members 16.
17 comes into surface contact with the recesses 19, 19, whereby the distal ends of the elastic arms 12, 12 are held in the expanded state.
As a result, the disk 2 becomes free to rotate. The elastic arms 12 are connected to each other by a concave arc-shaped surface 22 provided on the front surface of the holder main body 10a. With this surface 22, the disk 2 is positioned at the center in the main body case 1 and the disk 2 is opened. 9 can be restricted.

When taking out the disk 2 for replacement, the disk holder 10 is pulled out of the main body case 1. With the removal of the disk holder 10, a pair of elastic arms 1
The distal end portions of the discs 2 and 12 are separated from the release members 16 and 16 and are reduced and deformed by the elastic restoring force. P ₁ and P ₂ are conjugated and held. Therefore,
As the disk holder 10 is pulled out, the disk 2 is taken out while being held and held between the pair of elastic arms 12. At this time, as shown in FIG. 5, when the disc 2 is conjugated between the pair of elastic arms 12, the disc 2 is lifted from the inner bottom surface of the main body case 1 by the slope 14 below the groove 13. 2 is taken out without interfering with the boss 6 on the inner bottom surface of the main body case 1. After completely removing the disk holder 10 from the main body case 1, the disk 2 can be detached from the disk holder 10 by expanding and deforming the pair of elastic arms 12, 12 by hand. As shown in FIG. 6, a groove 21 is provided at a central portion between the elastic arms 12 inside the front surface of the holder main body 10a, and the groove 21 and the two grooves 13 sandwich three points on the outer periphery of the disk 2, thereby The disc 2 can be held more reliably and can be safely taken in and out.

To accommodate the disk 2 in the main body case 1, as shown in FIG.
The disc holder 10 is inserted into the opening 9 from the side of the elastic arms 12. When the disk holder 10 is completely inserted, the pair of elastic arms 12 are expanded and deformed by the release members 16 as shown in FIG. 1, and the disk 2 is free to rotate.

The cancel member 16 in place of the plate-shaped in the illustrated embodiment,
It can be changed to a pin shape. As shown in FIG. 7, pins 23 are provided on the upper and lower surfaces of each end of the elastic arms 12.
On the other hand, a groove 24 for guiding the pin 23 is provided on the upper and lower surfaces of the inside of the main body case 1, and the elastic arm 12 is expanded and deformed by an arc groove 24 a provided on the inner part of the groove 24. You may do so.

[0016]

According to the present invention, the disk holder 10 is provided.
Since the outer peripheral portion of the disk 2 is held in the vertical direction by sandwiching the outer peripheral portion of the disk 2 between the groove 21 on the disk main body 10a side and the pair of left and right elastic arms 12, 12, the main body By holding and holding the disc holder 10 in the case 1,
Can be safely put in and out of the main body case 1 without touching it and dropping it. That is, when the disk holder 10 is removed from the main body case 1, the disk 2 can be reliably taken out from the main body case 1 together with the disk holder 10 without being left behind in front of the two elastic arms 12. When the disk holder 10 is removed from the main body case 1, the disk 2 does not drop downward from between the left and right elastic arms 12 and 12 and does not accidentally come off from the distal ends of the two elastic arms 12 and 12. . When the disc 2 is replaced outside the main body case 1, when the disc 2 is pulled forward between the two elastic arms 12, the left and right elastic arms 12, 12 are expanded and deformed, and the disc holder 10 The disk 2 can be withdrawn from the front. When storing the disk 2 in the main body case 1,
In a state where the disk 2 is supported between the pair of elastic arms 12 of the disk holder 10, the disk holder 10 only needs to be inserted into the main body case 1 from the elastic arms 12 side thereof. When the disk holder 10 is put into and taken out of the main body case 1, the left and right elastic arms 12 are arranged along the inner surfaces of the left and right side walls 15, 15 of the main body case 1. Can be put in and out smoothly. Body case 1
The disc 2 into and out disc holder 10 which is conjugated held in, the disc 2 and below the present body case 1 located between the upper rib 14 and lower rib 14 of the recording surface pair of the elastic arms 12, 12 The recording surface of the disk 2 is not damaged because it is supported so as not to slide on the inner wall surface of the disk 2. Since the disk 2 is not of the type placed on the disk holder 10, the recording surface of the disk 2 is also unlikely to be damaged in this regard.

[Brief description of the drawings]

FIG. 1 is an internal plan view of a disk cartridge according to the present invention.

FIG. 2 is an internal plan view showing a state in which a disk is being stored.

FIG. 3 is a perspective view showing a state where a disk is taken out.

FIG. 4 is an enlarged sectional view taken along line AA in FIG.

FIG. 5 is an enlarged sectional view taken along line BB in FIG. 2;

FIG. 6 is an enlarged sectional view taken along line CC in FIG. 3;

FIG. 7 is a plan view of a main body case and a lid showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Disk 3 Signal reading window 4 Drive shaft insertion hole 9 Opening 10 Dick holder 10a Holder main body 12 Elastic arm 15 Left and right side walls of main body case

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 23/03 B65D 85/57

Claims (1)

(57) [Claims] 1. A main body case in which a disk as a storage medium is rotatably accommodated is provided with a signal reading window and a drive shaft insertion hole, and the window and the drive shaft insertion hole are opened and closed by a shutter. In the disk cartridge having a structure that can be freely closed , the disk is inserted and removed from a rear side surface of the main body case.
And a disk holder which is detachably mounted through the opening inside the main body case, and wherein the disk holder is provided on the left and right sides of the holder main body. A pair of left and right elastic arms, which are protruded forward along the inner surface of the side wall, and which are capable of expanding and contracting and deformable to hold and hold two points on the outer periphery of the inner side of the main body case from the center of the disk; An upper rib and a lower rib for receiving front and back surfaces of an outer peripheral edge of the disk are formed respectively above and below a distal end of the elastic arm on the disk engaging surface side, and the elastic arm on the inside of the front surface of the holder body. By sandwiching the outer peripheral three points of the disk between the groove provided at the central portion between the two and the two elastic arms, the disk holder can move forward while holding the disk. And so it can be removed disconnect from the main body case, the right and left inside the body case, the opening and orientation if
The left and right ends of the elastic arms are in contact with the slope.
The disk holder is provided with the opening in the main body case.
When fully inserted through the elastic arm
The slope at the tip of the is the slope inside the body case
The front end of the elastic arm is engaged by surface contact and engagement.
Wherein the disk cartridge is held in an expanded state .