JPS6141170Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a disc-shaped recording medium storage case, which includes a case body in which a disc-shaped recording medium is stored, and a lid that is removably connected to the case body by closing the opening of the case body. In particular, when retrieving the recording medium inside the playback device into the case body, the engagement protrusion provided on the lock arm of the lid and the engagement recess provided on the case body are reliably engaged. To provide a disk-shaped recording medium storage case in which a lock arm is configured to have a spring force applied by a spring that is a separate member from the lid, so that the recovery operation of the disk-shaped recording medium can be carried out without any hindrance. With the goal.

The present applicant first proposed a case consisting of a case body in which a disc-shaped recording medium is housed and a lid that is removably connected to the case body and closes this opening.
No. 11278 “Cartridge for disc-shaped information recording media”
I applied.

In this cartridge, when the case is inserted into the playback device, the lock release member disengages the engagement protrusion of the lock arm from the engagement recess of the case body, and the lid is attached to the latching device inside the playback device. The disk-shaped recording medium is left hanging on the disk, and the disk-shaped recording medium is mounted in the playback device using a clamp device. To recover the disc-shaped recording medium installed in the playback device into the case body, insert the empty case body into the playback device, release the latching device, and return the clamping device. The lid and the disc-shaped recording medium are recovered into the case body by the operation.

However, the disc-shaped recording medium storage case described above,
When the clamp device releases the clamp, the lock arm's engaging convex portion is engaged with the engaging concave portion only by the spring properties of the lock arm itself. Therefore, as the recording medium is loaded and collected several times, When the lock arm itself loses its springiness, the return movement of the lock arm becomes slow.
There were cases in which it did not return to the predetermined engagement position. In that case, since the engaging convex part of the lock arm does not engage with the engaging concave part, there is a problem that although the recording medium can be recovered, the case body is taken out of the playback apparatus with the lid remaining inside the playback apparatus. Ta.

In addition, in the disc-shaped recording medium storage case, the contact surface between the engagement protrusion of the lock arm and the engagement recess of the case body is flat in the direction perpendicular to the insertion direction of the case body, so that the engagement protrusion and the engagement protrusion are flat. The engagement recess is shallow, and this causes problems such as if the case body is pulled out forcefully during recovery, the engagement between the engagement protrusion and the engagement recess may be disengaged, making it impossible to recover the lid. Ta.

The present invention solves the above problems, and one embodiment thereof will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the disc-shaped recording medium storage case according to the present invention, and FIG. 2 shows a playback device and a third
The figure is a perspective view showing the lock arm of the lid in FIG. 1 and the lock release member that cooperates with the lid, and FIGS. FIG. 4 shows a plan view of main parts for explaining the operation of disengaging.

As shown in FIG. 1, a disc-shaped recording medium (hereinafter referred to as a disk) storage case 1 includes a flat case body 3 that stores a disk 2, and this case body 3.
and a lid 5 which is removably coupled to the lid 5 and closes the opening 4.

The case body 3 includes a pair of case halves 6a and 6b.
Engagement recesses 7a and 7b are formed on the left and right inner wall surfaces on the opening 4 side.

The lid 5 has a pair of antenna-like lock arms 9a and 9b formed on the left and right sides of the main body 8. Each lock arm 9a _, 9b extends in the direction of arrow _X1 with _the base in the direction _of arrow
elastically displaced in the direction. In addition, each lock arm 9
The engagement recesses 7a, 7 are provided on the outer side surfaces of the a, 9b.
Engagement convex portions 9a _-1 and 9b _-1 that engage with b are formed.

9a _-2 and 9b _-2 are springs that constitute the main part of the present invention, and one end is fixed to the inner side surface of the lock arms 9a and 9b, and the other end is fixed to the side surface of the main body part 8 opposite to the inner side surface. , lock arms 9a and 9b are biased outwardly by springs 9a _-2 and 9b _-2 , respectively. When the disc 2 and the lid 5 are housed in the case body 3, the engaging protrusions 9a _-1 and 9b _-1 are engaged with the engaging recesses 7a and 7b of the case body 3, and the lid 5 is This prevents it from coming off from the case body 3.

Here, the end surfaces of the engaging protrusions 9a _-1 and _{9b -1} in the direction of arrow The inner walls of the recesses 7a and 7b in the direction of arrow _X1 are also inclined surfaces 7at and 7bt that match the inclined surfaces 9at and 9bt.

As shown in FIG. 2, the disc playback device 10 includes a mechanism 1 for expanding an opening 4 of a case body 3.
1. Mechanism 12 for clamping the outer group guard 2a of the disk 2, and mechanism 1 for latching the lid 5.
3rd prize.

When playing a disc, the disc 2 is mounted on the turntable 14 in the playback device 10. Mounting of the disc is carried out by the operator inserting the case 1 from the lid side through the opening 15 into the playback device 10 to the back thereof, and then pulling it out. That is, the case 1 is inserted along the guide rails 17a, 17b with the opening side of the case body 3 expanded by the mechanism 11, with the left and right ends of the case body 3 supported by the sliders 16a, 16b. When the case 1 is inserted deep into the playback device 10, the front edge of the lid 5 pushes the rods 12a _-1 and 12b _-1 installed on the door-shaped bases 12a and 12b that support the clamp mechanism 12. , base 12
As a and 12b rotate back around the left and right pins 12a _-2 and 12b _-2 against the spring 12s,
The L-shaped notches 8a and 8b of the lid 5 are the lid latching mechanism 13.
levers 13a, 13b and rods 12a _-1 , 12
It is latched between b _-1 . On the other hand, the outer group guard 2a of the disk 2 is clamped by the clamp mechanism 12, and as will be described later, the lid 5 is unclamped from the case body 3, so that only the case body 3 is pulled out in the direction of arrow _X2 . Lid 5
is left in the playback device, and the disk 2 is relatively removed from the case body 3. When the case body 3 is pulled out of the device, the disk 2 has its outer group guard 2a clamped by the clamp mechanism 12, and its center hole 2b is supported by the support ring 18 in the raised position, so that the disk 2 is placed on the upper side of the turntable 14. supported in position. Thereafter, by a play operation, the clamp mechanism 12 releases the clamp, the support ring 18 descends, and the disk 2 is placed on the turntable 14 and is mounted by clamping the central hole portion. The disk 2 is rotated integrally with the turntable 14 by a motor (not shown), and is reproduced by a pickup mechanism 19.

The mechanism for releasing the connection of the lid 5 to the case body 3 and the release state will now be described with reference to FIG. 3 and FIGS. 4 to 6.

Reference numerals 20a and 20b are lock release members, which are fixed to the left and right sides of the inner part of the playback device 10, and arm portions 20a _{-1 and} 20a protrude in the direction of arrow _X2 as shown in FIG.
20b _-1 is disposed at the same height as the case insertion path and at a position facing the left and right ends of the case 1.

When the case 1 is inserted deep into the playback device 10, the lock arms _9a and _9b , which have been in the state shown in FIG. Spring 9 as shown in Figure 5
a _-2 , 9b _{-2 ,} and is elastically displaced in the directions of arrows Y ₁ and Y ₂ , and finally the convex portion 9 a _-1 comes out of the concave portion 7 a as shown in FIG. 6 . Similarly, the convex portion 9b _-1 is also the concave portion 7.
Get out of b.

Next, when recovering the disk 2, first stop the turntable 14, then the disk 2
stops rotating, and contrary to the case described above, the support ring 18 rises, the clamp mechanism 12 operates, and the disk 2 is again supported at a position above the turntable 14.

When the empty case body 3 is inserted in this state, the disk 2 and the lid 5 are housed in the case body 3 one after another. When the case body 3 is pushed in to the innermost position, the front edge of the lid 5 contacts and presses the rods 12a _-1 and 12b _-1 , and the bases 12a and 12b, which are in the retracted position, are locked. is released and spring 12
It rotates forward due to the spring force of 〓. As a result, the clamp of the clamp device 12 is released. Due to the clamp release operation at this time, the lid 5 is released from the rod 12.
It is pushed back to the front side by a _-1 and 12b _-1 , and the latching by levers 13a and 13b is released.
Also, at this time, as the lock arms 9a and 9b are separated from the lock release members 20a and 20b, their own springiness and the spring 9 that overcomes them
The spring force of a _-2 and 9b _-2 causes the displacement to return to the outside.
As a result, the engaging convex portions 9 of the lock arms 9a, 9b
a _-1 and 9b _-1 are the engagement recesses 7a and 9b, respectively, as shown in FIG.
7b, the lid 5 is firmly coupled to the case body 3.

The release of the clamp by the clamp device 12 can be determined by the feeling of the case main body 3, so when this feeling is felt, the main body 3 is pulled out toward the front side. This allows the lid 5
is an engagement protrusion 9 that engages with the engagement recesses 7a and 7b.
a _-1 , 9b _-1 together with the case body 3 are pulled out of the playback device 10 .

When the case body 3 is pulled out, the inclined surfaces 9at and 9bt, which had a slight gap between them until now as shown by the solid line in FIG. Match. Therefore, the engaging convex portions 9a _-1 and 9b _-1 engage with the engaging concave portions 7a and 7b in a firmly biting state. Moreover, the engaging protrusion 9
Since a _-1 and 9b _-1 are deeply engaged in the engagement recesses 7a and 7b by the spring force of springs 9a _-2 and 9b _-2 ,
For example, even if the case body 3 is quickly pulled out to the front, the engagement protrusions 9a _-1 , 9b _-1 and the engagement recess 7
The engagement between a and 7b will not be released unnecessarily.

Therefore, for example, when the engaging surfaces of the engaging protrusions 9a _-1 and 9b _-1 and the engaging recesses 7a and 7b are engaged with each other in a plane perpendicular to the pulling direction, it is difficult to recover the disk 2. Although the lid 5 was able to be unlatched because the case body 3 was folded back and pulled out forcefully after insertion, the engagement protrusions 9a _-1 , 9b _-1 and the engagement recess 7
There will be no inconvenience caused if only the lid 5 is left in the reproducing device 10 due to failure of engagement between a and 7b.

As mentioned above, the disc-shaped recording medium storage case of the present invention includes a case body in which a disc-shaped recording medium is stored, and a lock arm on the lid side that is provided for coupling and uncoupling the lid that closes the opening of the case body. The engaging convex part of the case body is configured to be positively engaged with the engaging concave part of the case body by the spring force of a spring which is a separate member from the lid and one end of which is locked to the lock arm. Compared to a disk-shaped recording medium storage case, which has a structure in which the engagement convex part is engaged with the engagement concave part by its own spring property, the engagement convex part is engaged with the engagement concave part when the disc-shaped recording medium in the playback device is retrieved into the case body. The engagement between the protrusion and the engagement recess can be made more securely, so even if the case body is quickly pulled back, the lid will no longer engage with the lock arm after the lid has been released from the playback device. As soon as the lock is released, the engaging convex part of the lock arm engages with the engaging concave part by the force of the spring, so there is no possibility of a failure in engagement, and this can lead to inconveniences such as failure to retrieve the lid. It has features such as being able to reliably prevent

[Brief explanation of drawings]

Fig. 1 is a partially cut away exploded perspective view of an embodiment of the disc-shaped recording medium storage case according to the present invention, with the lid removed from the case body, and Fig. 2 shows a case that cooperates with the case of Fig. 1. A perspective view showing the internal structure of the playback device,
FIG. 3 is a perspective view showing the lock arm of the lid shown in FIG. 1 and the lock release member that cooperates with the lock arm, and FIGS. FIG. 3 is a plan view of a main part for explaining engagement and disengagement operations. 1... Storage case, 2... Disk, 3... Case body, 4... Opening, 5... Lid, 7a, 7b
...Engagement recess, 9a _-1 , 9b _-1 ...Engagement protrusion, 9
a _-2 , 9b _-2 ... Spring, 10 ... Disc playback device.

Claims (1)

[Scope of utility model registration request] It has a case body in which a disc-shaped recording medium is housed, and a lid that is removably connected to the case body and closes an opening of the case body, and is engaged with lock arms formed on the left and right sides of the body of the lid. The protrusion engages with the engagement recess in the case body, and the case body and the lid are inserted into the playback device in a connected state, and the engagement protrusion of the lock arm associated with this insertion operation engages. The engagement between the lid and the case body is released by disengaging from the mating recess, and the lid and the disc-shaped recording medium are left in the playback device, and only the case body is taken out of the playback device, and then the case body is removed for further playback. When recovering the disc-shaped recording medium and the lid inside the device, insert the empty case body into the playback device, and the engaging protrusion of the lock arm will engage with the engaging recess, and the disc-shaped recording medium and the lid will be removed from the case body. In a disc-shaped recording medium storage case configured to be collected inside and taken out from the playback device,
A spring, which is a separate member, is interposed between the main body of the lid and the lock arm to bias the engaging convex portion in the direction of engaging the engaging concave portion, and the disk-shaped recording medium is moved by the spring force of the spring. A disc-shaped recording medium storage case in which an engaging convex portion and an engaging concave portion are reliably engaged when collected into a case body.