JPH08147847A - Disk reproducing device - Google Patents

Abstract

PURPOSE: To make a disk cartridge easy to be loaded and to hold a shutter in a closed state until a lid is closed. CONSTITUTION: A placing plate 5 on which the disk cartridge is placed is arranged above a reproducing part 4 housed in a case main body. When the lid attached to arms 17, 21 is closed, a shutter opening/closing member 7 is driven in the direction of -X first, and is driven in the direction of -Z next, and the shutter of the disk cartridge is opened. Further, the placing plate 5 is driven downward, and the disk cartridge is loaded on the reproducing part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus for reproducing a disc in a disc cartridge whose opening is opened and closed by a shutter, and more particularly to a shutter opening / closing mechanism for the disc cartridge and a disc cartridge mounting mechanism.

[0002]

2. Description of the Related Art A conventional example of a disk reproducing apparatus for reproducing a disk such as a magneto-optical disk housed in a disk cartridge whose opening is opened and closed by a shutter is shown in FIG.
0 is shown. As shown in the figure, a holder 28 is rotatably attached to the reproducing unit 4, and the reproducing unit 4 and the holder 28 are housed in a case body 29.

A lid 23 is rotatably provided on the case main body 29, and locking members 23 a, 2 provided on the lid 23 are provided.
3a is engaged with tongue pieces 28c, 28c provided on the holder 28. Therefore, the holder 28 interlocks with the lid 23 and projects from the inside of the case body 29 by opening the lid 23.
In this state, the disc cartridge 25 is inserted into the holder 28.

A shutter 26 is slidably attached to the disc cartridge 25. The shutter 26 is U-shaped and covers the front and back surfaces of the disc in the disc cartridge 25 in the closed state. A lock member provided in the disk cartridge 25 locks the shutter 26 at the closed position of the shutter 26. The shutter 26 is provided with a hole 26a for opening and closing, and the holder 28 is provided with a tongue piece 28a for unlocking and a leaf spring 28b for opening and closing the shutter. When the disc cartridge 25 is inserted into the holder 28, the tongue piece 28a first projects into the groove 25a of the disc cartridge 25 to deform the lock member and unlock the shutter. Next, the leaf spring 28b projects into the hole 26a of the shutter. Disk cartridge 25 in that state
When is pushed into the holder 28, the movement of the shutter 26 is stopped by the leaf spring 28b and the shutter 26 is opened. When the disk cartridge 25 is pulled out from the holder 28, the shutter 26 is closed by the operation reverse to the above.

In such a disc reproducing apparatus, since the shutter is opened only by inserting the disc cartridge into the holder, there is a problem that dust is mixed into the disc cartridge unless the lid is closed in that state.

In order to solve this problem, Japanese Patent Laid-Open No. 6-1
In the reproducing apparatus proposed in Japanese Patent No. 50506, the shutter is not opened when the disc cartridge is inserted into the holder, and the shutter is opened when the holder is housed in the case body or after being housed in the case body. It is configured to

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The playback device proposed in Japanese Patent Publication No. 506 includes a holder for holding a disc cartridge, and since this holder has a structure for inserting and removing from the case body, the playback range of the holder and lid is wide and the playback device is compact. There was a problem that I could not. Further, since the disc cartridge is inserted into the holder toward the narrow insertion opening, there is a problem that the operability of mounting the disc cartridge is poor.

The present invention has been made in view of the above points, and an object of the present invention is to easily mount a disk cartridge and to keep the shutter closed until the lid is closed. It is an object to provide a shutter opening / closing mechanism for a disc cartridge and a disc cartridge mounting mechanism.

Another object of the present invention is to provide a disk cartridge shutter opening / closing mechanism and a disk cartridge mounting mechanism that do not require a disk cartridge holder that requires high positional accuracy.

[0010]

DISCLOSURE OF THE INVENTION A disk reproducing apparatus of the present invention is a disk reproducing apparatus in which a disk cartridge accommodating a recording medium is mounted in a reproducing section and is reproduced. And a shutter opening / closing member that is driven in association with the opening / closing operation of the lid, the mounting table being driven by a stroke required to mount the disc cartridge in the reproducing unit in association with the opening / closing operation of the lid. With the lid open, mount the disc cartridge on the mounting table, and then close the lid to open the shutter of the disc cartridge.
The disc cartridge is configured to be mounted in the reproducing section.

Further, in the disc reproducing apparatus, the disc cartridge is separated from the reproducing portion in conjunction with the opening operation of the lid, and then the shutter of the disc cartridge is closed.

Further, in each of the disc reproducing devices, the shutter opening / closing member is driven in a direction in which the shutter opening / closing member is close to the side face of the disc cartridge, and then in a direction parallel to the side face of the disc cartridge. The shutter opening / closing member projects into the slide groove of the disc cartridge and the hole of the shutter, unlocks the shutter, and then opens the shutter.

Further, in each of the disk reproducing apparatuses, at least three or more protrusions are provided on the mounting table, and a slidable member having an inclined portion which abuts against the protrusions and which is driven in association with the opening / closing operation of the lid. Is provided, and the mounting table is driven by the sliding member.

In the disc reproducing apparatus, the sliding member is biased by a spring, and the elastic force of the spring biases the lid in the opening direction via the sliding member. .

Further, in each of the disk reproducing devices,
The sliding member is further driven even after the mounting table has mounted the disc cartridge on the reproducing portion, and the protrusion and the inclined portion are separated from each other during reproducing.

Further, in each of the disk reproducing devices, the mounting table and the reproducing unit are engaged with each other by a shaft and a hole,
The movement of the mounting table in a direction other than the contacting / separating direction with respect to the reproducing unit is restricted.

[0017]

According to the disc reproducing apparatus of the present invention, since the shutter is opened by the shutter opening / closing member which is interlocked with the lid that covers the case body, the shutter can be opened only when the lid is closed. . Further, since the disc cartridge is directly mounted on the mounting table in the case main body, the disc cartridge can be mounted from a wide range and is easily mounted.

Further, since there is no need for a holder for holding the disk cartridge and putting it in and out from the case body, there is no moving member occupying a large space, and the apparatus can be designed compact. Further, the holder requires high positional accuracy, and the manufacturing cost can be reduced by eliminating the holder.

If the sliding member for driving the mounting table is separated from the mounting table during reproduction, it is possible to prevent external vibration from being transmitted to the disk reproducing device via the shutter opening / closing mechanism.

[0020]

Embodiments of the present invention will be described with reference to the drawings. The disk cartridge used in the embodiment of the present invention is similar to that shown in FIG. 10, and its detailed description is omitted. FIG. 1 is an exploded perspective view showing a main part of a portable disc reproducing apparatus according to an embodiment of the present invention.

The construction of the subassembly 1 shown in FIG. 1 is shown in FIG.
Are detailed in. As shown in the drawing, the sub-chassis 8 and 9 are fastened with screws to be integrated. A shaft 14 is inserted into the sliding member 10 through a long hole of the sub chassis 8 and is crimped. That is, the sliding member 10 is slidably supported by the sub chassis 8. The tension coil spring 12 hung between the sliding member 10 and the sub-chassis 8 is used for the sliding member 10 as shown in FIG.
In the Z direction.

Similarly, the sliding member 11 is slidably supported by the sub-chassis 9 and is biased in the Z direction by the tension coil spring 13. The sliding members 10 and 11 have shafts 1 respectively.
0a and 11a are erected, and inclined portions 10b and 1a
0b and inclined portions 11b and 11b are provided.

The construction of the subassembly 2 shown in FIG. 1 is shown in FIG.
Are detailed in. As shown in the figure, the shafts 14, 14 ... Are inserted into the slider 16 through the elongated holes of the sub-chassis 15 and caulked. That is, the slider 16 is the sub chassis 15
Slidably supported by The arm 17 to which the lid of the main body case is attached is rotatably attached to the sub chassis 15 by the shaft 14. The arm 17 and the slider 16 are connected by the shafts 14 and 14 via the arm 18, and the rotation of the arm 17 causes the slider 16 to be sent linearly.
The slider 16 is provided with grooves 16a and 16a.

The construction of the subassembly 3 shown in FIG. 1 is shown in FIG.
Are detailed in. As shown in the drawing, the shafts 14, 14 ... Are inserted into the slider 20 through the elongated holes of the sub-chassis 19 and are crimped. That is, the slider 20 is
Slidably supported by The arm 21 to which the lid of the main body case is attached is rotatably attached to the sub chassis 19 by the shaft 14. The arm 21 and the slider 20 are connected by the shafts 14 and 14 via the arm 22, and the slider 20 is fed in a straight line by the rotation of the arm 21.
As shown in FIG. 1, subassemblies 2 and 3 are fastened to subchasses 8 and 9, respectively.

Reference numeral 4 shown in FIG. 1 denotes a reproducing section, to which an optical pickup for reading a signal from the disc and a disc motor for rotationally driving the disc are attached. The reproducing unit 4 is supported by the subassembly 1. The mounting table 5 is arranged on the reproducing unit 4. The shafts 5a, 5a erected on the mounting table 5 are fitted into the holes 4a, 4a of the reproducing section 4, and the mounting table 5 is movable in the Y-axis direction shown in the drawing, but in the X-axis direction and the Z-axis direction. Movement is restricted. Convex portion 5 extending below the mounting table 5
b, 5b ... Inclined portions 10b, 10 of the sliding members 10, 11
a and b and 11b, 11b. Further, the bent pieces 5c, 5c, ... Which extend above the mounting table 5 perform positioning when the disk cartridge is mounted on the mounting table 5. When the disk cartridge is mounted on the mounting table 5, the convex portions 5b, 5b ...
0b, 10b and 11b, 11b are mounted on a horizontal portion, and the disk cartridge does not move even if a downward force is applied to the disk cartridge or the mounting table 5.

The guide plate 6 is fastened to the mounting table 5.
The shutter opening / closing member 7 is mounted on the guide plate 6 and guided by the guide plate 6. That is, the portions of the shutter opening / closing member 7 extending below the shafts 7 c, 7 c are engaged with the guide groove 6 a of the guide plate 6. Also, the portions of the shafts 7c, 7c extending upward can be engaged with the grooves 16a, 16a of the slider 16. A tension coil spring 27 is hung between the shutter opening / closing member 7 and the guide plate 6, and the shutter opening / closing member 7 is biased in the -Z direction shown in the drawing. Further, the shutter opening / closing member 7 is provided with a convex portion 7a which projects into the groove of the disc cartridge and a convex portion 7b which projects into the hole of the shutter. The members described above are housed in the case body of the disc reproducing apparatus, and the arms 17 and 21 are provided with lids for covering the inside of the case body.

Next, the operation of the above embodiment will be described with reference to FIGS. As shown in FIG. 5, the disk cartridge 25 is mounted on the mounting table 5 with the lid 23 opened. When the lid 23 is rotated in the closing direction as shown in FIG. 6, the sliders 16 and 20 are moved through the arms 18 and 22.
Are driven in the -Z direction shown in FIG. The shutter opening / closing member 7 engaged with the grooves 16a, 16a of the slider 16 is-
When driven in the X direction, the convex portion 7a pushes a lock member that locks the shutter 26 to release the lock. Further, the convex portion 7 b of the shutter opening / closing member 7 projects into the hole 26 a of the shutter 26.

As shown in FIG. 7, when the lid 23 is further rotated in the closing direction, the shutter opening / closing member 7 is moved by the elastic force of the tension coil spring 27 to move the slider 16 by -Z.
Driven in the direction. Then, the shutter 26 is opened.
Further, the sliders 16 and 20 come into contact with the shafts 10a and 11a, so that the sliding members 10 and 11 are driven in the -Z direction. When the sliding members 10 and 11 move in the −Z direction, the convex portions 5b and 5b of the mounting table 5 are inclined portions 10b, 10b, 11b, and
The mounting table 5 descends together with the disk cartridge 25 and the shutter opening / closing member 7 along the line 11b. FIG. 8 shows a state in which the mounting table 5 starts to descend.

When the lid 23 is further rotated, the mounting table 5 moves the disk cartridge 25 to the reproducing position of the reproducing section 4, and the inclined portions 10b, 10b, 11b, 11b move the convex portions 5b of the mounting table 5, Leave 5b. Then the lid 23
The leaf spring 24 attached to the disk cartridge 25
The disk cartridge 25 is positioned by the positioning member provided in the reproducing section 4. Then, the disc in the disc cartridge 25 is adsorbed by the turntable of the reproducing unit 4 to reproduce the disc. At this time, the lid 23 is locked to the case body by a lock member (not shown). FIG. 9 shows a state in which the lid 23 is closed.

When the disc cartridge 25 is ejected, the reverse operation is performed. Since the lid 23 is biased in the opening direction by the tension coil springs 12 and 13, when the lock is released, the lid 23 is automatically opened halfway.

Although the present invention is applied to the portable disc reproducing apparatus in the embodiments, the present invention can also be applied to a recording / reproducing apparatus for recording / reproducing a magneto-optical disc. It can also be applied to a recording / reproducing apparatus using a stationary type of general household audio and a magnetic head together.

[0032]

According to the disc reproducing apparatus of the present invention,
Since the shutter is opened by the shutter opening / closing member that interlocks with the lid that covers the case body, the shutter can be opened only when the lid is closed, and dust is prevented from entering. Further, since the disc cartridge is directly mounted on the mounting table in the case main body, the disc cartridge can be mounted from a wide range and is easily mounted.

Further, since there is no need for a holder for holding the disk cartridge and putting it in and out from the case body, there is no moving member occupying a large space, and the apparatus can be designed compact. Further, the holder requires high positional accuracy, and the manufacturing cost can be reduced by eliminating the holder.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main part of a disc reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a portion of the disc reproducing apparatus.

FIG. 3 is an exploded perspective view showing a part of the disc reproducing apparatus.

FIG. 4 is an exploded perspective view showing a part of the disc reproducing apparatus.

5A is a plan view showing a main part of the disc reproducing apparatus with some parts seen through, and FIG. 5B is a part of the state of FIG. 5B of the disc reproducing apparatus. It is a side view which sees through and shows a component.

6 (a) is a plan view showing another state of the portion shown in FIG. 5, and FIG. 6 (b) is a side view showing the same state.

7 (a) is a plan view showing yet another state of the portion shown in FIG. 5, and FIG. 7 (b) is a side view showing the same state.

8 (a) is a plan view showing still another state of the portion shown in FIG. 5, and FIG. 8 (b) is a side view showing the same state.

9 (a) is a plan view showing still another state of the portion shown in FIG. 5, and FIG. 9 (b) is a side view showing the same state.

FIG. 10 is a perspective view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 subassembly 2 subassembly 3 subassembly 4 reproduction part 5 mounting table, 5a shaft, 5b convex part, 5c bent piece 6 guide plate, 6a guide groove 7 shutter opening / closing member, 7a, 7b convex part, 7c shaft 8,9 Sub chassis 10,11 Sliding member, 10a, 11a Shaft 12,13 Tension coil spring 14 Shaft 15 Sub chassis 16 Slider, 16a Groove 17,18 Arm 19 Sub chassis 20 Slider 21,22 Arm 23 Lid, 23a Locking member 24 Leaf spring 25 Disc Cartridge, 25a Groove 26 Shutter, 26a Hole 27 Tension coil spring 28 Holder, 28a Tongue piece, 28b Leaf spring, 28c
Tongue piece 29 Case body

Claims (7)

[Claims] 1. A disc reproducing apparatus in which a disc cartridge containing a recording medium is mounted in a reproducing section for reproduction, and a lid covering the inside of the case body and a disc cartridge arranged in the case body and interlocking with the opening / closing operation of the lid. A mounting table that is driven by a stroke required to mount the disc on the reproducing unit, and a shutter opening / closing member that is driven in conjunction with the opening / closing operation of the lid, and the disc cartridge is opened with the lid open. Attach it to the table, then close the lid to open the shutter of the disk cartridge,
Furthermore, the disc reproducing apparatus is characterized in that the disc cartridge is mounted in the reproducing section. 2. The disc reproducing apparatus according to claim 1, wherein the disc cartridge is separated from the reproducing portion in conjunction with the opening operation of the lid, and then the shutter of the disc cartridge is closed. 3. The shutter opening / closing member is driven by driving the shutter opening / closing member in a direction close to the side surface of the disk cartridge in association with the closing operation of the lid, and then driving the shutter opening / closing member in a direction parallel to the side surface of the disk cartridge. 3. The disc reproducing apparatus according to claim 1, wherein the shutter is opened after it is inserted into the slide groove and the hole of the shutter to unlock the shutter. 4. The slide table is provided with at least three or more protrusions, and a slide member is provided which has an inclined portion that abuts against the protrusions and is driven in conjunction with the opening / closing operation of the lid. 4. The disk reproducing apparatus according to claim 1, wherein the mounting table is driven by the above. 5. The disc reproducing apparatus according to claim 4, wherein the sliding member is biased by a spring, and the elastic force of the spring biases the lid in the opening direction via the sliding member. 6. The slide member is further driven even after the mounting table has mounted the disc cartridge on the reproducing portion, and the protrusion and the inclined portion are separated from each other during reproducing.
Or a disc reproducing apparatus of 5. 7. The method according to claim 1, wherein the mounting table and the reproducing portion are engaged with each other by a shaft and a hole, and movement of the mounting table in a direction other than a contacting / separating direction with respect to the reproducing portion is restricted. Disc playback device.