JPH103768A - Disk cartridge - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a wobble in a maximum open state of a lid and to safely and easily put a disk in and out. SOLUTION: An opening 5 for loading and unloading a disk of a main body case 1 is closed with a lid 7. The lid 7 is openable and closable about a pivot 16. An elastic piece 17 is provided at a position near the pivot 16 of the lid 7, and a projection 19 is provided at the tip thereof. When the lid 7 is closed, the convex portion 19 is engaged with a concave portion 20 for regulating the closing position provided on the inner surface of the main body case 1, and when the lid 7 is fully opened, it is provided at another position on the inner surface of the main body case 1. It engages with the concave portion 21 for regulating the maximum opening position.

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, which is a recording 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 type is disclosed in Japanese Patent Application Laid-Open No. 5-242626. There, an opening is provided at the rear end of the main body case so that a disk can be taken in and out, and this opening is opened and closed around a pivot with a lid.

[0003]

However, in the above-mentioned disc cartridge, the position of the lid is regulated at the closed position, but the maximum open position (180) at which the lid can be taken out is provided.
In (degree), the position is not regulated. For this reason,
When removing the disc, when the lid is opened with the opening facing downward, the lid fluctuates around the pivot and does not settle. was there.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve such a problem, and a disk cartridge capable of preventing wobble in a state where a lid is fully opened, thereby facilitating removal of a disk and achieving safety. To offer.

[0005]

In the disk cartridge of the present invention, an opening 5 for inserting and removing a disk is provided on one side surface 8 of the main body case 1 in which the disk 2 is rotatably accommodated. The lid 7 that opens and closes the opening 5 by entering and exiting the inside of the portion 5 is horizontally rotatable around a pivot 16 provided on the rotation base end side of the lid 7 on a plane parallel to the plane of the main body case 1. It is attached to.

In such a disk cartridge, in the present invention, between the main body case 1 and the rotation base end side of the lid 7,
The concave portion 21 and the convex portion 19 can be disengaged from each other as the lid 7 is opened and closed.
The lid 7 is characterized in that the position of the lid 7 is regulated by the engagement between the concave portion 21 and the convex portion 19 at the maximum opening position of the lid 7 enabling the disk 2 to be taken out. Lid 7
Can be restricted to the closed position by providing a concave portion 20 separately from the concave portion 21 and selectively engaging the convex portion 19 with the concave portion 20.

[0007]

The position of the lid 7 is regulated by the engagement between the concave portion 21 and the convex portion 19 when the lid 7 is in the maximum open state, so that the lid 7 can be prevented from wobbling. Therefore, the disk 2 can be safely and easily taken out from the opening 5. it can.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 and FIG. 2, a disk cartridge rotates a disk 2 such as an optical disk on which signals such as video, audio and information are recorded on both upper and lower surfaces inside a thin rectangular main body case 1. Accommodate freely. The main body case 1 is composed of a plastic upper case 1a and a lower case 1
b and butted together to form an upper case 1
The signal reading window 3 is opened rearward from the left and right central portion of the front side of the lower case 1a and the lower case 1b, and the window 3 is closed by a shutter 4 that slides open and close left and right.

An opening 5 for inserting and removing the disk 2 is provided at the rear end of the main body case 1. 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. For this reason, the opening 5 has a main surface opening 5 a formed over the entire left and right length of the rear side surface 8 of the main body case 1 and a side opening 5 b · 5 b opened only at the rear end side of the left and right side walls 6 · 6 of the main body case 1. Thus, an opening is formed in a U-shape in plan view. The opening 5 is opened and closed by a plastic lid 7.

The lid 7 has a main surface wall 9 formed so as to enter into and close the main surface opening 5a.
Is formed to extend substantially at a right angle forward from both left and right ends of the
It has a side wall 10 that enters the inside of the left and right side openings 5b and closes it. On the outer surface of the side wall 10, a U-shaped notch 12 corresponding to the positioning recess 11 provided near the rear end of the main body case 1 is provided. The main surface wall 9 is provided with a finger hanging recess 13. On the inner surface side of the main surface wall 9, an inner peripheral wall 14 that is formed in an arc shape along the circumference of the disk 2 and that regulates movement of the disk 2 in the opening 5 direction is integrally formed. One of two left and right portions surrounded by the main surface wall 9, the inner peripheral wall 14, and the side wall 10 has a lightening concave portion 15 that opens upward, and the other lightening concave portion 1 that opens downward.
5 is formed to reduce the weight of the lid 7 and the material. One side wall 10 (the right side wall 1 in the illustrated example)
A pivot 16 as a pivot point of the lid 7 is integrally formed in the front end portion of 0) so as to protrude vertically. The lid 7 pivotally engages the upper and lower ends of the pivot 16 with shaft holes (not shown) formed in the vicinity of the rear ends of the side walls 6 of the upper and lower cases 1a and 1b so as to rotate. Incorporated in

Thus, the lid 7 is provided with the main surface opening 5a of the opening 5.
And a closed posture for closing the side opening 5b, and a maximum opening angle 9 on a plane parallel to the plane of the main body case 1 with the pivot 16 as the center.
It can be freely switched over to a full open position in which the main surface opening 5a is opened by rotating horizontally by 0 degrees. The position of the lid 7 is regulated at two positions, that is, a closed position and a maximum open position. As shown in FIGS. 3 and 4, the position is regulated by integrally projecting an elastic piece 17 forward from a position near the pivot 16 of the lid 7, and projecting a small hemispherical convex section at the tip of the elastic piece 17. 1
9 is projected downward. On the other hand, on the inner surface of the lower case 1b, the lid 7 is provided with a concave portion 20 having an arc-shaped cross section for regulating the closing position in which the convex portion 19 engages through the elastic deformation of the elastic piece 17 when the lid 7 is closed. A concave portion 21 having an arc-shaped cross section for regulating the maximum opening position is provided at which the convex portion 19 engages at the maximum opening position. In order to prevent the elastic piece 17 from interfering with the disk 2 when the disk 2 is taken in and out, the elastic piece 17 is extended from the lower end of the lid 7 along the inner surface of the lower case 1 and in a thin plate shape. Shall enter and exit without interference.

To prevent the disc 2 from dropping from the opening 5 accidentally when the lid 7 is in the maximum opened state,
As shown by a two-dot chain line B in FIG. 1, when the disk 2 protrudes a part of its circumference (an inferior arc) from the opening 5, the disk 2 is hooked on a part of the lid 7 on the rotation base end side. For this purpose, as shown in FIG. 3, the disk receiving elastic piece 22 is integrally formed at the front end of the inner peripheral wall 14 of the lid 7 on the rotation base end side so as to extend slightly forward from the pivot 16. . When the lid 7 is opened to a maximum opening angle of 90 degrees as shown in FIG. 1, the disk receiving elastic piece 22 formed in this manner is located in the disk take-out area (extended area between the inner surfaces of the left and right side walls 6.6). When the disk 2 stays partially out of the circumference from the opening 5, the disk 2 comes into contact with the part of the circumference, and the disk 2 is moved between the disk receiving elastic piece 22 and the inner surface of the side wall 6 of the main body case 1 opposed thereto. Is temporarily received in the opening 5. The disk resilient piece 22 is formed to be bent in an arc shape so as not to damage the disk 2 when receiving a part of the circumference of the disk 2.

A locking means is provided at the pivoting tip side of the lid 7 for holding the lid 7 in a closed position so as not to be opened carelessly. As shown in FIGS. 2 and 5, this locking means integrally extends a lock piece 23 which is elastically deformable forward to the rotation tip side of the lid 7, and a check claw 23 a is directed upward at the tip of the lock piece 23. To be provided. On the other hand, on the inner surface of the upper wall 24 of the upper case 1a, the engagement recess 2 with which the check pawl 23a engages when the lid 7 is closed is provided.
5 is provided. A slit 26 is formed in a U-shape at the rear portion of the engaging recess 25 of the upper wall 24, and a pressing wall piece 27 is connected to the upper wall 24 via a connecting portion 29 so as to be elastically deformable inward and outward of the main body case 1. And integrally formed.

In a normal state, the lid 7 is fixed to the lock piece 2.
The third non-return claw 23a is held in the closed state by engaging with the engagement concave portion 25, and there is no inadvertent opening. This closed state is also maintained by engaging the convex portion 19 at the tip of the elastic piece 17 with the concave portion 20 for regulating the closing position, thereby obtaining a double closed locked state. When the disc 2 is taken in and out for replacement or the like, the pressing wall piece 27 is pressed inward of the main body case 1 so that the check pawl 23a is disengaged from the engaging recess 25, and the fingertip is inserted into the finger hooking recess 13. Axis 16
Rotate 90 degrees horizontally. With the rotation of the lid 7, the convex portion 19 comes off from the concave portion 20 for regulating the closed position through the elastic deformation of the elastic piece 17, and when it rotates 90 degrees, it falls into the concave portion 21 for regulating the maximum open position and engages. Then, the lid 7 is reliably stopped and held at the maximum open position. Therefore, the disc 2 can be easily taken in and out of the opening 5 without the cover 7 fluctuating.

In the maximum open state, as described above, the disk receiving elastic piece 22 of the lid 7 stays in the take-out area of the disk 2 and abuts on one point of the circumferential arc of the disk 2 protruding from the opening 5. Even when the opening 5 is directed downward by the contact action, the disc 2 can be prevented from dropping from the opening 5. The receiving operation of the disk 2 by the disk receiving elastic piece 22 is more reliably performed by restricting the maximum opening position of the lid 7 by the engagement of the concave and convex portions 21 and 19, and the reliability is excellent.

The disk 2 temporarily received by the disk receiving elastic piece 22 as described above is
When the disk receiving elastic piece 22 is elastically deformed in a direction away from the disk 2 by slightly applying a force to the disk 2, the disk 2 can be completely removed from the opening 5. Disc 2
After the replacement, the lid 7 is horizontally rotated 90 degrees in the opposite direction to the above, so that the check pawl 23
a engages with the engaging concave portion 25, and at the same time, a closed locked state in which the convex portion 19 engages with the concave portion 20 for regulating the closing position is obtained.

The concave portions 20 and 21 and the convex portion 19 are preferably provided with the concave portions 20 and 21 on the inner surface of the main body case 1 as in the case of the above embodiment, in order to avoid inadvertent interference with the disk 2. However, since the convex portion 19 is small, a single concave portion is provided on the lid 7 side, and the convex portions are provided at two positions of a lid closed position and a lid maximum open position on the inner surface of the main body case 1, contrary to the above-described embodiment. May be provided and implemented. Lid 7
When these uneven portions are provided on the main body case 1, the cover 7
May be provided on the upper end surface of the lid 7 and the inner surface of the upper case 1a instead of the lower end surface of the upper case 1b and the inner surface of the lower case 1b.
The opening 5 may be provided on one of the left and right side walls 6, 6 in addition to the rear side surface 8 of the main body case 1.

[0018]

According to the present invention, the concave and convex portions 21 and 19 which are engaged and disengaged with the opening and closing of the lid 7 are provided between the rotation base end side of the lid 7 for opening and closing the opening 5 and the main body case 1. With the lid 7 in the maximum open state, the position can be regulated by engaging the concave and convex portions 21 and 19. Accordingly, the lid 7 does not fluctuate in the maximum open state, and the disk 2 can be easily taken in and out safely without damage. The engagement between the concave and convex portions 21 and 19 is also used to regulate the position of the lid 7 in the closed state, so that the closing lock mechanism can be simplified.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a disk cartridge in a cover opened state.

FIG. 2 is a plan view showing the entire disc cartridge in a partially broken state.

FIG. 3 is an enlarged plan view of a main part in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line AA in FIG. 3;

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Disk 5 Opening 7 Lid 16 Axis 17 Elastic piece 19 Convex part 20 ・ 21 Concave part

Claims (2)

[Claims] An opening (5) for inserting and removing a disk is provided on one side (8) of a main body case (1) in which a disk (2) is rotatably housed, and the inside of the opening (5) enters and exits the main body case (1). A disk cartridge in which 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 provided on a rotation base end side of the lid 7, A concave portion 21 and a convex portion 19 are provided between the main body case 1 and the rotation base end side of the lid 7 so as to be disengageable with each other as the lid 7 is opened and closed. The disc cartridge is characterized in that the position of the lid 7 is regulated at the position by the engagement between the concave portion 21 and the convex portion 19. An opening (5) for inserting and removing a disk is provided on one side surface (8) of the main body case (1) in which the disk (2) is rotatably accommodated, and the inside of the opening (5) enters and exits the main body case (1). A disk cartridge in which 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 provided on a rotation base end side of the lid 7, Provided between the main body case 1 and the rotation base end side of the lid 7 are recesses 20 and 21 and a projection 19 which can be disengaged from each other as the lid 7 is opened and closed. The recesses 20 and 21 are respectively provided at two positions of the maximum opening position to enable
Characterized in that the position of the disc cartridge is regulated by selectively engaging the projection and the projection.