JPH09282830A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable loading and unloading of a disk only by opening the cover at 90 degrees, or nearly 90 degrees and also improve strength of the pivotal portion of the cover. SOLUTION: In order to loading or unloading a disk 2, a main surface aperture 5a is formed for full length of the rear side surface 8 of a body case 1 and aside surface apertures 5b are formed to the rear end portion of the right and left sidewalls 6 of the body case 1. A cover 7 is also formed to open or close the main surface aperture 5a and side surface aperture 5b. This cover 7 has a main surface wall 9 closing the main surface aperture 5a, a side surface wall 10 for closing the side surface aperture 5b, a side surface wall 10 for closing the side surface aperture 5b, an arc shaped internal circumference wall 11 formed along the circumference of the disk 2 at the internal surface side of the main surface wall 9 and a rotating end wall 12 coupling the front end portion of the side surface wall 10 and the front end portion of the internal circumference wall 11. A pivotal shaft 16 as the rotating fulcrum of the cover 7 is integrated to a first corner C1 where the side surface wall 10 crosses the rotating end wall 12 and the upper and lower ends of the pivotal shaft 16 are engaged with the shaft hole 17 in the side of the body case 1. In the center of the upper and lower direction of the second corner C2 where the internal circumference wall 11 and rotating end wall 12 are crossing, a recessed portion 19 having the upper and lower width (w) which is larger than the thickness of the disk 2 is formed.

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 JP-A-5-242626 shown in FIG. 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. In order to reduce the size of the disk cartridge as a whole, the width dimension of the main body case 1 and the diameter dimension of the disk 2 are set as close as possible.

Therefore, the opening 5 is formed in the main body case 1.
The main surface opening 5a is provided over the entire left and right sides of the rear side surface, and side surface openings 5b and 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 rear side surface. The opening 5 is opened and closed by a lid 7.
Is a main surface wall 9 that closes the main surface opening 5a, and left and right side surface openings 5b
The side wall 10 that closes 5b and the inner peripheral wall 11 that is formed in an arc shape along the circumference of the disk 2 on the inner surface side of the main surface wall 9 are formed. The lid 7 is pivotally supported by a pivot 16 having a corner portion 22 where one side wall 10 and the main surface wall 9 intersect as a fulcrum of rotation.
It is designed to open around the pivot 16 over 80 degrees or more.

[0004]

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. It is necessary to open it wider than 180 degrees. If the lid 7 is wide open in this way, the lid 7 may easily hit other peripheral objects and may be damaged.

Therefore, the applicant of the present invention, as shown in FIGS. 7 and 8, previously referred to, from the front end of the side wall 10 of the lid 7 to the pivot wall 23.
It has been proposed that the shaft is extended forward, a shaft hole 24 is provided in the pivot wall 23, and the shaft 16 is pivotally supported through the shaft 16 projecting from the main body case 1. 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 support wall 23 from interfering with the disc 2 when the disc 2 is taken in and out, it is necessary to thinly form the pivot support wall 23 as shown in FIG. Moreover, since the pivot wall 23 has the shaft hole 24, the strength becomes insufficient, and when the pivot wall 23 receives an unexpected drop accident or an external force, cracks are likely to occur around the shaft hole 24. is there. The pivot 16 which is cantilevered and integrally projects from the inner surface of the main body case 1 for a long time has insufficient strength, and may be broken due to an unexpected drop accident or the like.

The object of the present invention is to eliminate such problems, and to ensure that the opening angle of the lid is 90 degrees or close to 90 degrees, while receiving a drop impact or an external force. In order to provide a disc cartridge with excellent durability, which has a lid that does not crack or break.

[0008]

DISCLOSURE OF THE INVENTION A disk cartridge according to the present invention comprises a main body case 1 in which a disk 2 is rotatably accommodated, a main surface opening 5a opened over the entire length of one side surface 8, and the side surface. Side opening 5b opened at the end of the other side wall 6 adjacent to the side surface 8 close to the side surface 8
An opening 5 for loading and unloading the disk, which is composed of 5b, is provided, and a lid 7 for opening and closing the opening 5 is mounted on a plane parallel to the plane of the main body case 1 so as to be horizontally rotatable around a pivot 16. It is a thing.

Further, in the present invention, the lid 7 is provided with the main surface opening 5.
a main surface wall 9 that enters and closes a, and a side surface opening 5b that is formed to extend at a right angle from one end of this main surface wall 9.
The side wall 10 that closes the inside of it by closing it, and the main surface wall 9
The inner peripheral wall 11 formed in an arc shape along the circumference of the disc 2 on the inner surface side of the disk 2, the extension side end of the side wall 10 and one end of the inner peripheral wall 11 are made substantially parallel to the main surface wall 9. It is formed in a shape having a rotation base end wall 12 to be connected. The pivot 16 is integrally formed at the first corner portion C1 where the side wall 10 and the rotation base end wall 12 intersect or in the vicinity thereof,
The body case 1 is provided with a shaft hole 17 in which upper and lower ends of a pivot 16 are rotatably engaged. The inner peripheral wall 11 and the rotation base end wall 12
A concave portion 19 having a vertical width w slightly larger than the thickness of the disk 2 is provided at the central portion in the vertical direction of the second corner portion C2 where the two intersect. When the lid 7 is rotated 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 left and right side walls 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.

[0010]

Since the pivot shaft 16 which is the pivot point of the lid 7 is integrally formed at the first corner C1 where the side wall 10 and the pivot base wall 12 intersect or in the vicinity thereof, the lid 7 is pivoted around the pivot shaft 16. The lid 7 can be rotated only by 90 degrees (position A shown in FIG. 1).
The whole can be ejected from the ejection area of the disc 2. At that time, if the lid 7 is stopped to rotate slightly before reaching 90 degrees (position B shown in FIG. 1), the second corner C
2 does not completely retreat from the ejection area of the disk 2 to the outside and remains in the area.

However, even if the second corner C2 remains in the take-out area of the disc 2 or the disc 2 that is taken in and out slightly swings to the left and right as described above, the disc 2 has the same peripheral edge. Interference with the lid 7 can be avoided by inserting and removing the portion through the concave portion 19 of the second corner portion C2. Axis 16 integrally formed on the lid 7 side
Can be engaged with the shaft hole 17 on the main body case 1 side even if the projecting length from the upper and lower end surfaces of the lid 7 is shortened, so that it is less likely to be broken even if it receives a drop impact or an external force load. .

[0012]

1 to 4 show an embodiment of a disk cartridge according to the present invention. 2 and 3
In the disc cartridge, a disc 2 such as an optical disc on which signals such as video, audio, and information are recorded is rotatably housed inside a main body 1 having a thin rectangular shape. Body case 1 is a plastic upper case 1
a and the lower case 1b are butted and integrally coupled, and a signal reading window 3 is opened rearward from the center of the front side of the upper case 1a and the lower case 1b in the left-right direction. It is closed by a shutter 4 that slides open and close.

In FIGS. 1 and 2, an opening 5 is provided at the rear end of the 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 in which a first lid 7A and a second lid 7B, which are made of plastic and have a left-right symmetrical shape, are aligned at the left and right centers. The first lid 7A and the second lid 7B are
Each of the main surface wall 9, a side wall 10 that is formed to extend at a right angle from one end of the main surface wall 9 in the left-right direction, an inner peripheral wall 11 that is formed in an arc shape on the inner surface side of the main surface wall 9, and the side wall. 1
The rotary base end wall 12 connects the front end portion of 0 and the front end portion of the inner peripheral wall 11 substantially in parallel with the main surface wall 9.

The main surface wall 9 is formed so as to enter and close the inside of the main surface opening 5a, and the side wall 10 is formed into the side surface opening 5b.
It is formed in a shape that enters the inside of and closes it. The inner peripheral wall 11 is formed in an arc shape along the circumference of the disc 2 in order to receive the disc 2 when it floats toward the opening 5 and regulate its position. 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 FIGS. 3 and 4, the first lid 7A
And the second lid 7B include a side wall 10 and a rotation base end wall 12, respectively.
The pivot 16 is integrally formed in the up-down direction from the first corner C1 where the two intersect with each other or a position near the first corner C1, and the upper and lower ends of the pivot 16 are recessed at positions near the rear ends of the left and right side walls 6 of the upper and lower cases 1a and 1b. The shaft holes 17 and 17 are rotatably engaged.
As shown in FIGS. 1 and 4, the pivot 16 is formed such that approximately half of its cross section projects to the end surface of the pivot base wall 12 and is located on the rearward extension line of the inner surface of the left and right side walls 6. In this case, as shown in the drawing, the pivot 16 is formed in a vertically separated shape with a predetermined space. Upper and lower pivot 16.1
The space between 6 is set to be a little wider than the thickness of the disc 2 so that when the disc 2 is taken in and out, a part of its peripheral edge does not interfere with each other through the upper and lower pivots 16. .

Second crossing of the inner peripheral wall 11 and the rotation base end wall 12
A concave portion 19 having a vertical width w slightly larger than the thickness of the disk 2 is provided in the central portion in the vertical direction of the corner portion C2. The second corner portion C2 secures the strength of the second corner portion C2 while leaving the thick portions 19a and 19b above and below the recess 19. 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.

As shown in FIGS. 1 and 2, the closed postures of the first lid 7A and the second lid 7B are such that the upper and lower end surfaces of the main surface wall 9 are formed by the small upper and lower convex portions 20 provided on the inner surface side of the main surface opening 5a. It is held by engaging the provided recess 21 with the elasticity of the main body case 1. On the contrary, the concave portion 21 may be provided on the main body case 1 side and the convex portion 20 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, the front end portions of the side walls 10 of the respective lids 7A and 7B contact the rear end portions 6a of the left and right side walls 6 of the main body case 1. You should contact them.

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 the respective finger-holding recesses 13 with their fingertips, and are rotated 90 degrees horizontally around the pivot 16 in opposite directions. When it is moved, both the rotation base end wall 12 and the second corner portion C2 are on the extension line to the rear of the inner surface of the left and right side walls 6 of the main body case 1 as shown in the position A shown in FIG. Main surface opening 5a by moving from the line to the outside
Fully opens. Therefore, the peripheral edge of the disk 2 is the main body case 1
Even if the disk 2 is housed in a state of being very close to the inner surfaces of the left and right side walls 6, the disk 2 can be safely put in and taken out without abutting interference with the second lid 7B and the first lid 7A.

When the second lid 7B and the first lid 7A are opened slightly before reaching 90 degrees and the rotation is stopped, the second corner C2 is located at the left and right of the main body case 1 as shown in the position B in FIG. The inner side of the side wall 6 remains inside from the rearward extension line, but at this time, the disc 2 can be taken in and out without interfering with the respective lids 7A and 7B by passing through the recess 19 of the second corner portion C2 thereof. it can. In this way, the second lid 7B and the first lid 7
A has a small turning effect when it is opened 90 degrees or nearly 90 degrees. Therefore, even when another object is present around this area, especially outside the left and right side walls 6, the main surface opening 5a does not hit it.
It is convenient because it can be fully opened.

As in the above-described embodiment, when the double door type lid 7 composed of the left and right first lids 7A and the second lid 7B is adopted,
Since the turning radius can be made small, the lid 7 required outside the main body case 1 is coupled with the fact that the turning angle of 90 degrees is sufficient.
This is advantageous in that the turning space of can be further narrowed and can be avoided from contact with other objects in the vicinity. However, as shown in FIG. 5, it is also possible to configure the lid 7 with a single opening so as to open it up. The single lid 7 is provided with a main surface wall 9 that covers the entire surface of the main surface opening 5a, and a pair of left and right side surface openings 5 that are connected to both ends of the main surface wall 9.
b, 5b, a side wall 10 and 10, an inner peripheral wall 11 provided on the inner surface side of the principal surface wall 9, a turn connecting the front end portions of the left and right side surface walls 10 and 10 and the left and right front end portions of the inner peripheral wall 12. It is formed to have a moving base end wall 12 and a rotating front end wall 12 '. In this case, the pivot 16 is provided at the first corner portion C1 where one side wall 10 and the rotation base end wall 12 intersect, or at a position near this corner portion.
However, the concave portions 19 are respectively provided in the second corner portions C2 where the rotating base end wall 12 and the inner peripheral wall 11 intersect.
The opening 5 may be provided on any one of the left and right side walls 6 in addition to the rear side surface 8 of the main body case 1.

[0022]

According to the present invention, the pivot 16 which is the pivotal fulcrum of the lid 7 is the first intersection of the side wall 10 of the lid 7 and the pivotal proximal end wall 12.
The shaft hole 1 is integrally formed at the corner portion C1 or in the vicinity thereof.
7 is provided on the main body case 1 side. Therefore, it is possible to ensure the compactness of the entire disc cartridge in which the left-right width dimension of the main body case 1 and the diameter dimension of the disc 2 are made as close as possible, and it is sufficient to open and rotate the lid 7 by 90 degrees. It is possible to protect as much as possible from accidents of contact with other objects when the lid 7 is opened in various places.

Second crossing of the inner peripheral wall 11 and the rotation base wall 12
Since a concave portion 19 is provided in the central portion of the corner portion C2 in the vertical direction to avoid contact and interference with the disc 2, the lid 7
Is advantageous because it allows the disc 2 to be taken in and out even if the opening angle is slightly smaller than 90 degrees, and the lid 7 can be further turned. Moreover, the first corner C on the lid 7 side
1 or a pivot shaft 16 is integrally provided at a position near this,
A concave portion 19 is formed in the corner portion C2 above and below the thick portion 19a.
Since the lid 19 is provided so as to remain, 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 an internal plan view of a main part.

FIG. 2 is an overall external plan view.

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

FIG. 4 is a perspective view of a rotation base end portion of the lid.

5 is an internal plan view showing another embodiment corresponding to FIG. 1. FIG.

FIG. 6 is a plan view of a conventional example.

FIG. 7 is an internal plan view showing a main part of a comparative example.

8 is a side view of an essential part of the disc cartridge shown in FIG. 7. 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 19 Recess C1 First Corner section C2 Second corner section

Claims (3)

[Claims] 1. A main body case (1) in which a disk (2) is rotatably accommodated has a main surface opening (5a) opened over the entire length of one side surface (8) and other side walls (6, 6) adjacent to both ends of the side surface (8). Side opening 5b opened at the end near the side 8
An opening 5 for loading and unloading the disc, which is composed of 5b, is provided, and a lid 7 for opening and closing the opening 5 is horizontally rotated around a pivot 16 on a plane parallel to the plane of the body case 1. In a freely mounted disc cartridge, a lid 7 is formed by a main surface wall 9 that covers the main surface opening 5a by closing the main surface opening 5a and a side surface opening 5b that extends from one end of the main surface wall 9 at a right angle. A side wall 10 that enters the inside of the main surface wall 9 to close it, 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, and an extension side end portion of the side wall 10. It has 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, and a first corner portion where a pivot 16 intersects the side wall 10 and the rotation base end wall 12. Main body case integrally formed at C1 or near this position Is provided with a shaft hole 17 in which the upper and lower ends of the pivot 16 are rotatably engaged, and the disc 2 is provided at the vertical center of the second corner C2 where the inner peripheral wall 11 and the pivot base wall 12 intersect. A disk cartridge having a recess 19 having a vertical width w slightly larger than the thickness of the disk cartridge. 2. From the closed state of the lid 7 to the outward opening direction 90
2. The disk according to claim 1, wherein the rotation base end wall 12 of the lid 7 is set so as to be positioned on the extension line of the inner surface of the left and right side walls 6 of the main body case 1 or outside the extension line when rotated once. cartridge. 3. 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-door shape.
Alternatively, the disk cartridge described in 2.