JPH09265753A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to put in and out a disk only by opening a cover to 90 degrees and also to improve strength of a pivot part of the cover. SOLUTION: In order to put in and out a disk 2, a main face opening 5a is formed along an entire back side face 8 of a main body case 1, and side face openings 5b and 5a are formed on the back end parts of right and left side walls 6 and 6. A cover 7 to open/close the main face opening 5a and the side face opening 5b is provided with a main face wall 9 to close the main face opening 5a, a side wall 10 to close the side face opening 5b, an inner peripheral wall 11 formed into a circular-arc shape along the circumference of the disk 2 in the inner face side of the main face wall 9, and a turning base end wall 12 to connect a front end part of the side face wall 10 with a front end part of the inner peripheral wall 11. An axle 16, a supporting point of the lid 7, is formed in one body at the corner part where the side wall 10 and the turning base end wall 12 intersect each other, and the main body case 1 is provided with axle holes with which the upper and lower ends of the axle 16 are engaged turnably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge in which a disc, which is a recording medium such as an optical disc or a magneto-optical disc, is removably housed in a main body case.

[0002]

2. Description of the Related Art As a disk cartridge of this kind,
There is one as shown in FIG. 5 (for example, Japanese Patent Laid-Open No. 5-24
2626). There, there is an opening 5 at the rear end of the body case 1 for allowing the disc 2 to be taken in and out. Since the opening 5 has a very small difference between the left-right width dimension of the main body case 1 and the diameter dimension of the disk 2, the main surface opening 5a is provided over the entire left and right rear surface of the main body case 1, and Side surface openings 5b, 5b are also provided continuously with the main surface opening 5a at the rear end portions of the left and right side surfaces adjacent to both ends of the. The opening 5 is opened and closed by a lid 7. The lid 7 has a main surface wall 9 that closes the main surface opening 5a, side wall surfaces 10 and 10 that close the left and right side surface openings 5b and 5b, and an inner surface side of the main surface wall 9. And an inner peripheral wall 11 formed in an arc shape along the circumference of the disk 2. The lid 7 is pivotally supported by a pivot 16 having a corner 22 where the side wall 10 and the main wall 9 intersect each other as a pivotal fulcrum, and is opened around the pivot 16 over 180 degrees from the closed state.

[0003]

However, in the above-described disc cartridge having the corner portion 22 of the lid 7 as a pivotal fulcrum, when the lid 7 is opened, the side wall 10 retreats from the take-out area of the disc 2. Therefore, it is necessary to open it wider than 180 degrees. If the object is opened up to 180 degrees in this way, it may be easily hit by other surrounding objects and may be damaged.

Therefore, the applicant of the present invention, as shown in FIGS. 6 and 7, previously referred to, from the front end portion of the side wall 10 of the lid 7 to the pivot wall 20.
It has been proposed that the shaft be extended forward, a shaft hole 21 is provided in the pivot wall 20, and a pivot shaft 16 projecting from the body case 1 is pivotally supported in the shaft hole 21. According to this, the lid 7 can be retracted from the removal area of the disk 2 only by rotating the lid 7 around the pivot 16 by 90 degrees. However, in order to avoid the upper surface of the pivot wall 20 from interfering with the disc 2 when the disc 2 is taken in and out, the pivot wall 20 needs to be thinly formed as shown in FIG. Since the shaft hole 21 is provided, the strength becomes insufficient, and there is a problem that cracks are likely to occur in the peripheral portion of the shaft hole 21 when the pivot support wall 20 receives an unexpected drop accident or an external force. Further, the strength of the pivot 16 which is cantilevered and integrally projects from the inner surface of the main body case 1 for a long time is insufficient, and there is a risk of breakage due to an unexpected drop accident or the like.

The object of the present invention is to solve these problems and to ensure that the opening angle of the lid is sufficient at 90 degrees, while receiving a drop impact or an external force.
(EN) Provided is a disk cartridge having a lid that is not cracked or damaged and has excellent durability.

[0006]

DISCLOSURE OF THE INVENTION In a disk cartridge on which the present invention is based, a main surface opening 5a opened over the entire length of one side surface 8 of a main body case 1 in which a disk 2 is rotatably accommodated, and the side surface 8 are provided. Side wall 6 adjacent to both ends of
.6 side opening 5b opened at the end of the side closer to 8
5b is provided with an opening 5 for loading and unloading the disc, and a lid 7 for opening and closing the opening 5 is a main body case 1
It is mounted so as to be horizontally rotatable around the pivot 16 on a plane parallel to the plane.

Further, according to the present invention, the lid 7 is formed by forming a main surface wall 9 that covers the main surface opening 5a by closing the main surface opening 5a, and extending at a right angle from one end portion of the main surface wall 9 to form the side surface opening 5a.
a side wall 10 which enters and closes b, an inner peripheral wall 11 formed in an arc shape along the circumference of the disc 2 on the inner surface side of the main surface wall 9, and an extension side end portion of the side wall 10. And a rotation base end wall 12 that connects one end of the inner peripheral wall 11 to the main surface wall 9 substantially in parallel with each other. The pivot 16 is integrally formed at the corner where the side wall 10 and the pivot base wall 12 intersect or in the vicinity thereof, and the main body case 1
A shaft hole 17 is provided in which the upper and lower ends of the pivot shaft 16 are rotatably engaged. When the lid 7 is rotated approximately 90 degrees in the outward opening direction from the closed state, the rotation base end wall 12 is located on the extension line of the inner surface of the side wall 6 of the main body case 1 or outside the extension line. Is set as follows. As the lid 7, it is possible to adopt a double-door type in which the left and right first lids 7A and the second lid 7B are aligned at the center.

[0008]

Since the pivot 16 serving as the pivot of the lid 7 is integrally formed at the corner where the side wall 10 and the pivot base wall 12 intersect or in the vicinity thereof, the lid 7 can be rotated 90 degrees around the pivot 16. The entire lid 7 can be withdrawn from the ejection area of the disc 2 simply by moving it. Since the pivot 16 integrally formed on the lid 7 side can be engaged with the shaft hole 17 on the body case 1 side even if the projecting length from the upper and lower end surfaces of the lid 7 is shortened, this prevents the load of drop impact and external force. Even if it is received, it is less likely to break.

[0009]

1 to 3 show an embodiment of a disk cartridge according to the present invention. In FIG. 1, a disc cartridge rotatably accommodates a disc 2 such as an optical disc on which signals such as video, audio, and information are recorded on both upper and lower sides in a thin rectangular main body case 1.
The main body case 1 is formed by abutting an upper case 1a and a lower case 1b, which are made of plastic, against each other so as to be integrally connected to each other. Is opened, and this window 3 is closed by a shutter 4 that slides open and close to the left and right.

In FIGS. 1 and 2, an opening 5 is provided at the rear end of the main body case 1 for inserting and removing the disc 2. The opening 5 is formed on the rear side surface 8 of the body case 1.
The main surface opening 5a formed over the entire left and right sides of the main body case 1 and the side surface openings 5b and 5b opened only on the rear end side of the left and right side walls 6 of the main body case 1 are opened in a U shape in a plan view. The opening 5 is opened and closed by a lid 7.

The lid 7 is of a double-door type that is made of plastic and has a left-right symmetrical shape, in which a first lid 7A and a second lid 7B are aligned at the left-right center. The first lid 7A and the second lid 7B respectively include a main surface wall 9, a side wall 10 that is formed to extend at a right angle from one end portion of the main surface wall 9 in the left-right direction to the front, and a disk 2 on the inner surface side of the main surface wall 9. An inner peripheral wall 11 for restricting the position of the disk, which is formed in an arc shape along the circumference, and a rotation base end connecting the front end portion of the side wall 10 and the front end portion of the inner peripheral wall 11 substantially in parallel with the main surface wall 9. And a wall 12. The main surface wall 9 is formed so as to enter the inside of the main surface opening 5a and close it, and the side wall 10 is formed so as to enter the inside of the side surface opening 5b and close it. The main surface wall 9 is provided with a concave portion 13 on which a fingertip can be hung when the lid is opened. On the outer side surface of the side wall 10, a U-shaped notch 15 corresponding to the positioning recess 14 provided near the rear end of the main body case 1 is provided.

As shown in FIG. 3, a first lid 7A and a second lid 7B are provided.
Is formed by integrally projecting a pivot 16 in the vertical direction from a corner portion where the side wall 10 and the pivot base wall 12 intersect or in the vicinity thereof, and the upper and lower ends of the pivot 16 are attached to the upper and lower cases 1a.
.Axial hole 17 recessed in the vicinity of the rear end of each side wall 6 of 1b
・ Pivotally engage with 17. First lid 7A and second lid 7B
Are the main surface opening 5a and the side surface opening 5 of the opening 5, respectively.
The closed position to close b and the main surface opening 5 by rotating 90 degrees horizontally on a plane parallel to the plane of the body case 1 around the pivot 16.
It can be switched over to the fully open position where a is opened.

The closed postures of the first lid 7A and the second lid 7B are defined by the small upper and lower convex portions 18 provided on the inner surface side of the main surface opening 5a.
The recesses 19 provided on the upper and lower end surfaces of the main surface wall 9 are retained by engaging the body case 1 with elasticity. On the contrary, the concave portion 19 may be provided on the main body case 1 side and the convex portion 18 may be provided on the main surface wall 9. As means for restricting the opening angle of the first lid 7A and the second lid 7B to 90 degrees, for example, each lid 7
The front ends of the side walls 10 of A and 7B are the side walls 6 of the main body case 1.
It suffices to make contact with the rear end portion 6a.

In the above structure, when the disk 2 is taken in and out for replacement or the like, the second lid 7B and the first lid 7A are hooked in their respective recesses 13 with their fingertips and the pivots 16 are turned in opposite directions.
When it is rotated 90 degrees horizontally around it, each rotation base end wall 1
The main surface opening 5a is fully opened by moving 2 on the extension line of the inner surface of the side wall 6 of the main body case 1 or to the outside of the extension line. Therefore, even if the peripheral edge of the disk 2 is housed in a state of being in close proximity to the inner surface of the side wall 6 of the main body case 1, the disk 2 can safely contact the second lid 7B and the first lid 7A without abutting interference. Can be taken in and out. Since the second lid 7B and the first lid 7A can be turned by simply opening 90 degrees, the main surface opening 5a does not come into contact with the surroundings, especially when other objects are present near the outside of the left and right sidewalls 6 as well.
It is convenient because it can be fully opened.

As in the above embodiment, by adopting the double-door type lid 7 composed of the first lid 7A and the second lid 7B on the left and right, the turning radius can be reduced, so that the turning angle is 90.
Combined with the sufficient degree, it is advantageous that the rotation space of the lid 7 required outside the main body case 1 can be further narrowed and it can be avoided from contact with other peripheral objects. However, the present invention is not limited to this, and as shown in FIG. 4, a single lid 7 may be used to provide a single-opening specification. The single lid 7 includes a main surface wall 9 that covers the entire surface of the main surface opening 5a, and a side wall 10 that is connected to both ends of the main surface wall 9 and covers the left and right side surface openings 5b.
10, the inner peripheral wall 11 provided on the inner surface side of the main surface wall 9, the rotation base end wall 12 and the rotation tip end that connect the front end portions of the left and right side surface walls 10 and the left and right front end portions of the inner peripheral wall 12. Wall 12 '
And a shape having. In this case, one side wall 1
The pivot 16 is provided at a corner where 0 and the pivoting base wall 11 intersect, or at a position near this corner. The opening 5
In addition to the rear side surface 8 of the body case 1, it can be provided on either one of the left and right side walls 6, 6.

[0016]

According to the present invention, the pivot 16 which is the pivotal fulcrum of the lid 7 is integrally formed at the corner where the side wall 10 of the lid 7 and the pivotal base end wall 12 intersect or in the vicinity thereof, and the shaft hole 17 is formed. Is provided on the main body case 1 side. Therefore, since it is sufficient to open and rotate the lid 7 by 90 degrees, it is possible to protect as much as possible from an accident of contact with another object when the lid 7 is opened in a narrow place. Moreover, the rigidity of the pivot portion of the lid 7 can be enhanced, and the lid 7 can be well prevented from being damaged by being dropped or colliding with another object, and the durability can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of the whole.

FIG. 2 is a plan view of an essential part with a lid open.

FIG. 3 is a side view of a main part.

FIG. 4 is a partially cutaway plan view of the whole showing another embodiment.

FIG. 5 is a plan view of a conventional example.

FIG. 6 is a plan view showing a main part of a comparative example.

7 is a side view of a main part of the disc cartridge shown in FIG.

[Explanation of symbols]

 1 Main Body Case 2 Disc 5 Opening 5a Main Surface Opening 5b Side Opening 7 Lid 7A First Lid 7B Second Lid 9 Main Surface Wall 10 Side Wall 11 Inner Circumferential Wall 12 Rotation Base End Wall 16 Pivot 17 Shaft Bore

Claims (3)

[Claims] 1. A main surface opening 5a opened over the entire length of one side surface 8 of a main body case 1 in which a disk 2 is rotatably accommodated, and the side surface 8 of another side wall 6 adjacent to both ends of the side surface 8. An opening 5 for loading and unloading a disc, which is composed of side openings 5b and 5b opened at the side end, is provided, and a lid 7 for opening and closing the opening 5 is provided in the main body case 1 in parallel with the plane of the main body case 1. In the disk cartridge mounted on the surface so as to be horizontally rotatable around the pivot 16, a lid 7 is provided with a main surface wall 9 that closes the main surface opening 5a by closing the main surface opening 5a at right angles from one end of the main surface wall 9. A side wall 10 which is formed to extend into the inner wall of the main surface wall 9 so as to cover the side opening 5b by closing the side opening 5b; and an inner peripheral wall 11 formed in an arc shape along the circumference of the disk 2 on the inner surface side of the main surface wall 9. Side wall 10
Has a rotation base end wall 12 that connects the extension side end and one end of the inner peripheral wall 11 substantially parallel to the main surface wall 9, and the pivot 16 has the side wall 10 and the rotation base end wall. A disc cartridge, which is integrally formed at a corner portion where 12 intersects or a position in the vicinity thereof, and in which a main body case 1 is provided with a shaft hole 17 in which upper and lower ends of a pivot shaft 16 are rotatably engaged. 2. When the lid 7 is rotated by approximately 90 degrees in the outward opening direction from the closed state, the rotation base wall 12 has the main body case 1.
2. The disc cartridge according to claim 1, wherein the disc cartridge is set so as to be located on an extension line of the inner surface of the side wall 6 or outside the extension line. 3. The disk cartridge according to claim 1, wherein the lid 7 is composed of a first lid 7A and a second lid 7B that open and close the opening 5 in a double-opening manner.