JP2001122376A - Disk cartridge storage case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge storage case formed of a combination of an upper case with a lower case combined together into the cover overlapped state, in which the upper and lower cases are hard to be separated in the and down direction even in the case of receiving the impact of dropping or the like even when the upper and lower cases are composed of a polypropylene resin of low rigidity. SOLUTION: A case main body 7 is formed of a combination of an upper case 8 with a lower case 9. Left and right side walls 14 of the lower case 9 are positioned outside left and right walls 17 of the upper case 8. Ribs 24 are protruded on the left and right of the inner face of a main face wall 13 of the lower case 9. The inwardly collapse state of the left and right side walls 17 of the upper case 8 is controlled by the ribs 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a book case type storage case for storing a disk cartridge represented by a magneto-optical disk or the like.

[0002]

2. Description of the Related Art One of such disk cartridges is a mini disk (hereinafter simply referred to as MD). In FIG. 3, the MD storage case 31 is configured as a book case having an entrance 32 on the front surface of a case body including a lower case 33 and an upper case 34. In the lower case 33, side walls 36, 36 and a back wall are erected from left, right, and rear of a main surface wall 35 serving as a square bottom wall. Upper case 34
Are the side walls 3 from the left and right and behind the main surface wall 37 serving as the upper wall.
8.38 and the back wall protrude. Upper and lower case 34
A concave portion 39 and a convex portion 40 which are continuous in the front-rear direction are provided on the respective side walls 38 and 36 of the
The upper and lower cases 34 and 33 are inseparably connected in the vertical direction by press-fitting the 40. The back wall side is also engaged with the unevenness in the same manner. Many of the conventional storage cases 31 are formed of a highly rigid GPPS resin, ABS resin, or the like.

[0003]

SUMMARY OF THE INVENTION The inventors of the present invention have conceived of forming the storage case 31 with an easily reusable polypropylene resin for the purpose of recycling the used storage case 31. However, polypropylene resin is AB
Since the rigidity is lower than that of S resin or the like, the upper and lower cases 34.3
By simply maintaining the connection state of the side walls 3 by simply fitting the side walls 38 and 36 and the back wall to each other, if a drop impact is received, the side wall 3
It is expected that the upper and lower cases 34 and 33 will be easily separated from each other due to the inward deformation of the upper case 8. Further, when the upper and lower cases 34 and 33 are peeled off in opposite directions due to mischief or the like, it is expected that the concave / convex engagement is easily released. If the thickness of the side walls 36 and 38 is increased, the deformation of the side walls 38 can be suppressed, but in this case, there is a disadvantage that the outer shape of the storage case 31 becomes large.

An object of the present invention is to provide a storage case for a disk cartridge which does not easily separate the upper and lower cases due to a drop impact even when made of a polypropylene resin having low rigidity and does not cause an increase in the external size. It is in.

[0005]

According to the present invention, as shown in FIG. 2, a case main body 3 having an entrance 10 for the disk cartridge 1 on the front side is provided in a storage case comprising an upper case 8 and a lower case 9 as shown in FIG. As shown, upper and lower case 8
・ 9 left and right side walls 17 and 14 weigh in and out,
In the vertical direction, the concave and convex engagement is made in a retaining shape, and the upper and lower cases 8 and 9 are brought into contact with the left and right side walls 17 facing the inside of the case to regulate the inward fall of the side walls 17. It is characterized in that the rib 24 is protruded.

Specifically, left and right side walls 14 erected from the main surface wall 13 of the lower case 9 are located outside left and right side walls 17 protruded from the main surface wall 16 of the upper case 8. The left and right side walls 14 of the lower case 9 are formed in a stepped shape having a base end 14a and a protruding end 14b connected to the upper end thereof and located inside the case.
The lower surface of the protruding end 14b is set to a stepped surface 20 facing downward, and a recess 21 is formed below the stepped surface 20 and inside the base end 14a. Left and right side walls 1 of upper case 8
7 is formed in a stepped shape having a base end portion 17a and a protruding end portion 17b connected to the lower end thereof and located on the outside of the case.
Is set as an upward stepped surface 22. When the upper case 8 is connected to the lower case 9, the protruding end 17 b of the upper case 8 is fitted into the concave portion 21 of the lower case 9, and the protruding end 17 b of the lower case 9 is fitted to the downward stepped surface 20. By receiving the upward stepped surface 22, the upper and lower cases 8.
Reference numeral 9 vertically engages the concave and convex in a retaining shape.

[0007] Preferably, the ribs 24 are formed as linear ribs that are continuous in the front-rear direction. The inner wall surface of the rib 24 is formed so as to be flush with the inner wall surface of the base end portion 17 a of the left and right side walls 17 of the upper case 8. The upper case 8 and the lower case 9 are formed of a polypropylene resin.

[0008]

When the storage case is subjected to a drop impact, an external force is applied to the left and right side walls 17 and 14 of the upper and lower cases 8.9 toward the inside from the outer side of the case. The left and right side walls 17 facing inward fall down,
This attempts to separate the upper and lower cases 8.9. However, the rib 24 exerts a tension effect to prevent the side wall 17 from inwardly deforming. Accordingly, even when a relatively rigid resin such as a polypropylene resin is used as a material, the upper and lower cases 8 and 9 are hardly separated by a drop impact or the like.

When the ribs 24 are formed continuously in the front-rear direction, the function of extending the ribs 24 is further improved. If the left and right side walls 17 of the upper case 8 face the inside of the case, and the inner wall surface of the base end portion 17a and the inner wall surface of the rib 24 are flush, the outer shape of the case body 7 becomes large. Not even. In addition, the disc cartridge 1 does not get caught on the rib 24 when the disc cartridge 1 is inserted into or taken out of the case body 7. If a polypropylene resin is used as the material, the entire storage case can be easily recycled.

[0010]

1 and 2 show a storage case for a disk cartridge according to the present invention. In FIG.
Denotes a disk cartridge composed of mini disks to be stored. The disk cartridge 1 comprises a writable magneto-optical disk 2 and a cartridge case 3 for accommodating the writable magneto-optical disk. A signal reading / writing window opened in the cartridge case 3 can be opened and closed by a sliding shutter 5.
On the left and right sides of the lower surface of the lower half of the cartridge case 3, recesses 6 for positioning toward the deck are formed so as to straddle the case lower surface and the case outer surface.

In order to individually store and store the disk cartridges 1, a book case type storage case is used. This storage case is constituted by combining an upper case 8 and a lower case 9 whose case main bodies 7 are separately formed by plastic molding. These upper and lower cases 8.9 are
It is made of easily recyclable polypropylene resin. An entrance 10 is opened on the front surface of the case body 7, and a notch 11 for finger hooking is provided in the left and right central portions of the opening edge of the entrance 10 on main surfaces 16 and 13 of the upper and lower cases 8 and 9 which will be described later. It is.

The lower case 9 includes a rectangular main surface wall 13,
Left and right side walls 14, 14 erected from the left and right ends of the main surface wall 13.
And a back wall 15 erected from the rear end of the main surface wall 13, and is formed in a thin rectangular box shape having open front and upper surfaces. The upper case 8 includes a square main surface wall 16 that covers the upper surface of the opening of the lower case 9, left and right side walls 17 projecting downward from the left and right ends of the main surface wall 16, and a downward direction from the rear end of the main surface wall 16. And a back wall 18 standing upright. The left and right side walls 17 in the upper case 8 are provided at positions closer to the inside from the edge of the main surface wall 16.

When the upper and lower cases 8 and 9 are connected, the left and right side walls 14 and 14 and the back wall 15 of the lower case 9 are located outside the left and right side walls 17 and 17 and the back wall 18 of the upper case 8. A stopper 19 is provided on the inner surface near the rear end of the left and right side walls 17 of the upper case 8 to hold the disc cartridge 1 loaded in the case body 7 in a retaining shape. Is the dent 6
This is used to engage with this.

On the left and right side walls 14 of the lower case 9, a downward stepped surface 20 is formed on the inner surface of the upper and lower middle part. That is, each of the left and right side walls 14 is formed in a stepped shape including a base end portion 14a standing upright and a protruding end portion 14b bent from the upper end of the base end portion 14a toward the inside of the case and further extending upward. The lower surface of the protruding end 14b is set as a horizontal downward stepped surface 20, and the stepped surface 2
The inner side of the base end portion 14a below 0 is formed in the concave portion 21.

On the left and right side walls 17 of the upper case 8, an upwardly-facing stepped surface 22 is formed on the outer surface of the upper and lower middle part. That is, each of the left and right side walls 17 is formed in a stepped shape including a base end portion 17a projecting downward and a projection end portion 17b bent outward from the lower end of the base end wall 17a and further extending downward. The upper surface of the tip 17b is set as a horizontal upward stepped surface 22, and the tip 17
b is a convex portion that can be fitted into the concave portion 21.

When the upper case 8 is slid backward from the front side of the lower case 9 in a relatively horizontal posture, the protruding end portions 17b of the left and right side walls 17 of the upper case 8 are moved right and left. The upper stepped surface 22 is fitted into the concave portion 21 of the side wall 14, that is, is fitted into the concave and convex, so that the upward stepped surface 22 is in close proximity or surface contact with the downward stepped surface 20. As a result, the upper and lower cases 8 and 9 are prevented from falling off in the vertical direction. In addition, the side of the back wall 15/18 is also engaged with the unevenness.

On the left and right inner surfaces of the main surface wall 13 of the lower case 9,
Linear ribs 24 that are continuous in the front-rear direction project upward. The upper end of each rib 24 is a downward stepped surface 2
0, each rib 24 is below the base end 17a of the left and right side wall 17 of the upper case 8, and the outer surface of each rib 24 is inside the protruding end 17b of the left and right side wall 17 of the upper case 8. It is positioned so as to closely approach or contact the side surface. Therefore, the protruding end portion 17b, which is the free end side of the left and right side walls 17 of the upper case 8, prevents the rib 2 from moving toward the inside of the case.
4 and regulated. As a result, even if an external force that causes the left and right side walls 17 of the upper case 8 to fall down is applied through the left and right side walls 14 of the lower case 9, the upper case 8. Even if the upper and lower cases 8 and 9 are molded with a polypropylene resin having a lower rigidity than the resin, the upper and lower cases 8 and 9 are hardly separated in the vertical direction due to a drop impact or the like.

The base ends 17a of the left and right side walls 17 of the upper case 8
And the inner wall surface of the rib 24 are flush with each other. This prevents the case body 7 from increasing in size due to the provision of the ribs 24. Also, when the disk cartridge 1 is taken in and out of the case body 7, the rib 24 and the inner wall surface of the base end portion 17a act so as to slide and guide the left and right side surfaces of the disk cartridge 1, so that the disk cartridge 1 is completely inserted and removed. There is no hindrance.

The left and right side walls 17 of the upper case 8 and the left and right side walls 14 of the lower case 9 are overlapped inward and outward, contrary to the above embodiment. It may be located outside the side wall 14. That is, the relationship may be upside down in FIG. In this case, the ribs 24
Project downward from the main surface wall 16. As can be seen from this, the upper and lower cases 8 and 9 of the present invention are relative in the vertical position. Upper and lower case 8
9 may be press-fitted from above and below and combined.
The ribs 24 may be provided intermittently in a state of being divided in the front-rear direction.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a main part.

FIG. 2 is a partially broken plan view of a disk cartridge and a storage case.

FIG. 3 is a perspective view showing a conventional storage case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc cartridge 7 Case main body 8 Upper case 9 Lower case 10 Doorway 13 Main surface wall of lower case 14 Left and right side walls of lower case 16 Main surface wall of upper case 17 Left and right side walls of upper case 20 Downward stepped surface 21 Depression 22 Upward stepped surface 24 ribs

Claims (5)

[Claims] 1. A case body 7 having an entrance 10 for a disk cartridge 1 on a front surface comprises an upper case 8 and a lower case 9.
The right and left side walls 17 and 14 of the upper and lower cases 8.9 are weighed inward and outward, and are engaged with the upper and lower cases 8.9 in a retaining manner in the vertical direction. 13. A storage case for a disk cartridge, characterized in that ribs 24 are provided on the right and left sides 13 of the case 13 so as to abut against left and right side walls 17 facing the inside of the case to restrict the side walls 17 from falling inside. 2. The left and right side walls 14 erected from the main surface wall 13 of the lower case 9 are located outside the left and right side walls 17 protruding from the main surface wall 16 of the upper case 8. 14 is formed in a stepped shape having a base end portion 14a and a protruding end portion 14b connected to an upper end of the base end portion 14a and located inside the case, and the lower surface of the protruding end portions 14b of the left and right side walls 14 of the lower case 9 faces downward. A concave portion 21 is formed below the stepped surface 20 and inside the base end portion 14a. The left and right side walls 17 of the upper case 8 are formed with the base end portion 17a and The upper end of the left and right side walls 17 of the upper case 8 is set as an upward stepped surface 22 with a stepped shape having a protruding end portion 17b connected to the lower end of the upper case 8 and located outside the case. The upper case 8 is connected to the lower case 9 At this time, the protruding end portion 17b of the upper case 8 is fitted into the concave portion 21 of the lower case 9, and the upward stepped surface 22 of the protruding end portion 17b is received by the downward stepped surface 20 of the lower case 9 side. The storage case for a disk cartridge according to claim 1, wherein the upper and lower cases (8, 9) are engaged with the projections and depressions in the vertical direction so as to prevent them from coming off. 3. The storage case for a disk cartridge according to claim 1, wherein the ribs 24 are linear ribs that are continuous in the front-rear direction. 4. The disk cartridge storage according to claim 2, wherein an inner wall surface of the rib is formed so as to be flush with an inner wall surface of a base end portion of the left and right side walls of the upper case. Case. 5. The storage case for a disk cartridge according to claim 1, wherein the upper case 8 and the lower case 9 are formed of polypropylene resin.