JPH05198122A - Disk cartridge - Google Patents

Abstract

PURPOSE:To smoothly insert the disk cartridge by providing slanted parts extending toward outer peripheries on end part surfaces of a front end part and either of both side end parts of a cartridge case and making them to be as guide surfaces. CONSTITUTION:Four sides (the tip part on the upstream side of the cartridge in its inserting direction, both side end parts and the rear end) of the cartridge case are continuously formed with the slanted part 11 which is gradually lowered in accordance with its nearer portion to the outer periphery, while a round 12 is provided at each corner part as well. The disk cartridge is taken in and out very smoothly in cooperation with the slanted part 11 and the round 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge, such as an optical disc cartridge, in which a disc-shaped recording medium is rotatably housed therein and a shutter is slidably supported in a cartridge case. It is about.

[0002]

2. Description of the Related Art A cartridge case having an upper case and a lower case and having a spindle hole and a head insertion port, a disk-shaped recording medium rotatably accommodated in the cartridge case, and the head insertion port A disk cartridge having a shutter slidably supported by the cartridge case so as to be opened and closed is conventionally known.

[0003]

By the way, the conventional disk cartridge of this kind has a corner (edge part) at all four sides (front end, both side ends and rear end on the upstream side in the direction of inserting the cartridge). ). Therefore, when the disc cartridge is attached to or detached from the recording / reproducing apparatus, the corner portion (edge portion) collides with a member inside the apparatus, and smooth insertion cannot be performed, resulting in a problem in operability.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a disk cartridge with excellent operability that can be smoothly inserted into a recording / reproducing apparatus.

[0005]

To achieve this object, the present invention provides a cartridge case having an upper case and a lower case and having a spindle hole and a head insertion port, and is rotatable inside the cartridge case. A disk-shaped recording medium housed in a disk-shaped recording medium, and a shutter slidably supported by the cartridge storage case so as to open and close the head insertion opening, in the cartridge storage case upstream side of the cartridge storage case. The front end portion and at least one of the both end portions are provided with an inclined portion which becomes lower along the outer edge.

[0006]

According to the present invention, as described above, at least one of the front end and the both ends on the upstream side in the direction of inserting the cartridge of the cartridge case is provided with an inclined portion which becomes lower toward the outer edge. As a result, the inclined portion becomes a good guide surface, which enables smooth insertion of the disk cartridge.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a disk cartridge according to an embodiment of the present invention, FIG. 2 is a rear view thereof, FIG. 3 is a front view with a shutter opened, FIG. 4 is a plan view, and FIG. 5 is a shutter. 6 is a plan view with the upper case opened, FIG. 6 is a right side view, FIG. 7 is a left side view, FIG. 8 is a bottom view, FIG. 9 is a front view with the upper case removed, and FIG. Is a downward slope view, FIG. 12 is an enlarged cross-sectional view taken along the line 1A-A ', and FIG. 13 is an enlarged cross-sectional view taken along the line 1B-B'.

A cartridge case 1 is composed of an upper case 1a and a lower case 1b. A spindle hole 2 is provided in the center as shown in FIGS. 3 and 13, and an elliptical head insertion port 3 is provided outside the spindle hole 2. Are formed. Further, as shown in FIGS. 3 and 9, one hole 4 is provided on each side in the vicinity of the edge on the side where the head insertion opening 3 is formed and the edge on the opposite side.

A disk-shaped recording medium (optical disc) 5 is rotatably housed inside the cartridge storage case 1 as shown in FIGS. 3 and 9, and the central portion of the recording medium (optical disc) 5 is accommodated. The hub 6 is fixed to the.

Reference numeral 7 denotes a U-shaped shutter, which is wide enough to close the front and back spindle holes 2 and the head insertion port 3, respectively. The shutter 7 is slidably supported by the cartridge case 1 and automatically slides when mounted on the recording / reproducing apparatus so that the spindle hole 2 and the head insertion opening 3 are opened simultaneously. In the upper case 1a and the lower case 1b, small protrusions 8 in the form of straight ribs extending in the sliding direction of the shutter 7 are displayed to indicate the insertion direction of the disk cartridge provided on the surface of the cartridge case 1. Part 9
Two pieces are formed above and below with a space between them.

For example, FIGS. 1, 2, 12, and 13
As shown in the above, on both upper and lower surfaces of the cartridge case 1, the cartridge 7 extends in a direction orthogonal to the cartridge insertion direction, on the downstream side of the slide area of the shutter 7 in the cartridge insertion direction (see the arrow direction of the display portion 9). The fine concavo-convex portions 10 made of innumerable fine grooves are respectively formed. The fine concave-convex portion 10 functions as a slip stopper when the rear end portion side of the disk cartridge is pulled out from the recording / reproducing apparatus by picking it with a finger.

Further, as shown in, for example, FIGS. 1, 2, 4, and 6, the outer edges of the four sides of the cartridge case 1 (the front end, both side ends and the rear end on the upstream side in the direction of inserting the cartridge) are provided. A sloping portion 11 gradually lowering is formed continuously, and a roundness 12 is attached to each corner portion. Therefore, in each corner, the slanted portion 11 and the rounded portion 12 are provided side by side, and the cooperation of the slanted portion 11 and the rounded portion 12 allows the disk cartridge to be taken in and out very smoothly. In this embodiment, inclined portions 11 are formed on both upper and lower surfaces of the cartridge case 1.
However, it is also possible to form only on the upper surface or the lower surface.

As shown in FIGS. 1 and 2, a hole 13 for reference positioning is provided near the front end of the cartridge case 1.
a and 13b are provided at a predetermined interval, and holes 14a and 14b are formed in the shutter 7 at a predetermined interval. As shown in FIG. 3, when the shutter 7 slides in either direction to open the spindle hole 2 and the head insertion port 3, the holes 14a, 1
Any one of the holes 14 of the holes 4a and 4b
It is adapted to be located on either one of the holes 13b.

Further, as shown in FIG. 1, FIG. 2, FIG. 12 and FIG. 13, for example, thin plates 15 are fixed near the free end 7a of the shutter 7 on both upper and lower sides of the cartridge case 1, and the shutter 7 is provided. The shutter 7 is adapted to slide with the free end 7a of the underside of the plate 15 entering the lower side of the plate 15.

[0016]

As described above, according to the present invention, the surface of at least one of the front end and the both ends on the upstream side of the cartridge case in the direction of insertion of the cartridge is lowered as it goes to the outer edge. By providing the inclined portion, the inclined portion serves as a good guide surface, which enables the smooth insertion of the disk cartridge and improves the operability.

In particular, as described in the above embodiment, when the corners are rounded, the insertion of the disk cartridge becomes very smooth due to the cooperation of the slanted portions and the roundness.

[Brief description of drawings]

FIG. 1 is a front view of a disk cartridge according to an embodiment of the present invention.

FIG. 2 is a rear view of the disk cartridge.

FIG. 3 is a front view showing a state where a shutter of the disc cartridge is opened.

FIG. 4 is a plan view of the disk cartridge.

FIG. 5 is a plan view showing a state where the shutter of the disc cartridge is opened.

FIG. 6 is a right side view of the disk cartridge.

FIG. 7 is a left side view of the disk cartridge.

FIG. 8 is a bottom view of the disk cartridge.

FIG. 9 is a front view showing a state in which the upper case of the disc cartridge is removed.

FIG. 10 is an upper perspective view of the disk cartridge.

FIG. 11 is a lower perspective view of the disk cartridge.

FIG. 12 is an enlarged cross-sectional view on the line of FIG. 1A-A ′.

FIG. 13 is an enlarged cross-sectional view taken along the line B-B ′ of FIG.

[Explanation of symbols]

 1 Cartridge case 1a Upper case 1b Lower case 2 Spindle hole 3 Head insertion port 5 Disc-shaped recording medium 7 Shatter 11 Sloping part 12 Roundness

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Fujimoto 2880, Kozu, Odawara-shi, Kanagawa Stock company Hitachi Odawara factory (72) Inventor Annori Kanazawa 1-88, Torora, Ibaraki-shi, Osaka Hitachi Ma (72) Inventor Yoshiyuki Nakamori 1-88, Torora, Ibaraki, Osaka Prefecture Hitachi Maxell, Ltd.

Claims (1)

[Claims] 1. A cartridge case having an upper case and a lower case and having a spindle hole and a head insertion port, a disc-shaped recording medium rotatably accommodated in the cartridge case, and the head insertion port. In a disk cartridge including a shutter slidably supported by the cartridge case so as to be opened and closed, at least one end of a front end portion and both end portions on the upstream side in the cartridge insertion direction of the cartridge case. A disc cartridge which is provided with a slanted portion which is gradually lowered toward the outer edge of the disc surface.