JPH0644664A - Recording and/or reproducing device for discoid recording medium - Google Patents

Abstract

PURPOSE:To detect an opening and closing state and to prevent damage by forming a projection capable of entering in an opening part from a front surface of a cartridge to a rear side of the cartridge relatively to inserting the cartridge. CONSTITUTION:The opening part 205 of the cartridge 200 is exposed to make the medium in the cartridge 200 face to the outside through the opening part 205 by opening a shutter. Consequently, the projection 303 provided in a cartridge holder 25 is entered toward the rear part of the cartridge 200 in the opening part 205 relatively to inserting the cartridge 200, and the insertion is carried out without being obstracted by the projection 303. On the other hand, when a shutter 207 is not opened for some reason or other, the opening part 205 remains covered with the shutter 207. Therefore, the projection 303 collides against a front surface part of the shutter 207, thus preventing further insertion of the cartridge 200 by the projection 303.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a read-only optical recording medium (generally called a CD-ROM), a rewritable optical recording medium, and a rewritable magneto-optical medium by optical modulation or magnetic field modulation. The present invention relates to a recording and / or reproducing apparatus for performing recording and / or reproduction on a disk-shaped recording medium such as a recording medium.

[0002]

2. Description of the Related Art Recently, as a disc-shaped recording medium, a read-only optical recording medium (generally referred to as a CD-ROM), a rewritable optical recording medium, or other rewritable by optical modulation or magnetic field modulation is possible. Various magneto-optical recording media have been proposed, and at present, CD-ROMs and magneto-optical recording media have come into practical use.

Here, as one example, a CD-ROM
(Hereinafter, referred to as an optical disc). Then, the reproducing apparatus that optically reads out from this optical disc,
It has a cartridge holder in which a cartridge in which an optical disc is rotatably accommodated can be inserted and removed. Here, the cartridge has an opening in a part thereof, and the optical disk is exposed to the outside through this opening. Further, the cartridge is configured such that a shutter that blocks the opening is provided so as to be openable and closable.

A shutter opening / closing means for opening / closing the shutter of the cartridge is provided on the inner surface of the cartridge holder of the reproducing apparatus. The shutter opening / closing means is configured to open the shutter of the cartridge when the cartridge is inserted into the cartridge holder, as the cartridge is inserted. When the cartridge is completely inserted into the cartridge holder, the disk table of the spindle motor mounted in the reproducing device enters through the opening of the cartridge to clamp the central part of the optical disk. Then, for example, by operating the playback key on the operation panel, the optical disc is rotated in one direction by the drive of the spindle motor, and the optical pickup mounted in the playback device moves in the radial direction of the optical disc. Play the information recorded in.

[0005]

By the way, when the cartridge is inserted into the cartridge holder, the shutter of the cartridge is usually opened by the shutter opening / closing means provided in the cartridge holder. There is a risk that the shutter will not open.

However, in the conventional reproducing apparatus, even if the shutter is not opened when the cartridge is inserted, the cartridge can be inserted as it is, so that the shutter is completely inserted into the cartridge holder with the shutter closed. It will be. The disk table of the spindle motor operates when the cartridge is completely inserted into the cartridge holder regardless of whether the shutter is open or closed. The inconvenience of breakage occurs.

Further, in general, the reproducing apparatus has a format plate attached to the upper surface of the cartridge holder for the sake of appearance and appearance. Therefore, when the cartridge is inserted into the cartridge holder, it is not possible to confirm whether or not the shutter is opened. Therefore, the operator performs the following operation assuming that the shutter is open. That is, the play key on the operation panel is pressed.

Then, for example, when the reproducing apparatus itself has a small design, the cartridge and the optical pickup are set in a very close positional relationship during reproduction. Normally, since the shutter is open, there is no problem with this positional relationship, but when the shutter is inserted with the shutter closed as described above, the tip of the optical pickup collides with the shutter, The optical system such as the objective lens attached to the optical pickup and the moving mechanism for moving the optical pickup are overloaded and the optical pickup is damaged.

As described above, in the related art, there is a problem that the protective function is not provided when the shutter is not opened and the reliability is poor.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to mechanically detect the open / closed state of a shutter with a simple structure and to put a cartridge in a cartridge holder. For disc-shaped recording media that can prevent insertion of the cartridge and prevent damage to the internal precision mechanism (optical pickup, spindle motor, etc.) if the shutter does not open for some reason when inserted Recording and / or reproducing apparatus.

[0011]

According to the present invention, a disc-shaped recording medium 201 is rotatably accommodated and a disc-shaped recording medium 2 is provided.
For the cartridge body 202 having the opening 205 that exposes at least a part of 01 to the outside, a shutter 207 for shielding the opening 205 and a portion continuous with the opening 205 in the front surface of the cartridge body 202 is provided. Recording and / or recording for a disk-shaped recording medium having a cartridge holder 25 provided with a shutter opening / closing means 51 for opening and closing a cartridge 200 configured to be openable and closable and for opening and closing a shutter 207 when the cartridge 200 is taken in and out. Alternatively, in the reproducing apparatus, the cartridge holder 25 is provided with the shutter opening / closing means 51.
When the shutter 207 is opened, the cartridge 20
In contrast to the insertion of 0, a protrusion 303 is formed so as to be able to enter from the front surface of the cartridge 200 into the opening 205 toward the rear side of the cartridge 200.

[0012]

The cartridge 2 is placed in the cartridge holder 25 of the recording and / or reproducing apparatus for the disk-shaped recording medium of the present invention.
When 00 is inserted, the shutter opening / closing means 51 normally opens the shutter 207 of the cartridge 200 with the insertion of the cartridge 200. Shutter 20
By opening 7, the opening 205 of the cartridge 200 is exposed, and the disk-shaped recording medium 201 in the cartridge 200 is exposed to the outside through the opening 205. Therefore, the projection 303 provided on the cartridge holder 25 enters the inside of the opening 205 from the front surface of the cartridge 200 toward the rear side of the cartridge 200, relative to the insertion of the cartridge 200. That is, the cartridge 200 is completely inserted into the cartridge holder 25 without being disturbed by the protrusion 303.

On the other hand, in the process of inserting the cartridge 200 into the cartridge holder 25, if the shutter 207 is not opened for some reason, the opening 205 of the cartridge 200 remains shielded by the shutter 207. Therefore, the projection 303 is formed by the shutter 2
It collides with the front surface portion (207c) of 07, and the cartridge 200 is prevented from further insertion by the protrusion 303.

[0014]

EXAMPLE An example of a recording and / or reproducing apparatus for a disc-shaped recording medium according to the present invention will be described below with reference to FIGS. 1 to 20, but it has been put to practical use as a disc-shaped recording medium. An embodiment of the present invention will be described with reference to a read-only optical recording medium (CD-ROM; hereinafter simply referred to as an optical disk). Therefore, the device applied to this optical disk is also referred to as a read-only device.

As shown in FIGS. 1 and 2, this reproducing apparatus is a disk rotation drive mechanism 1 for rotating an optical disk housed in a cartridge body of a cartridge and an optical pickup for reading and reproducing an information signal recorded on the optical disk. The apparatus main body 3 having the built-in 2 is provided. As shown in FIG. 2, the apparatus main body 3 is composed of a cabinet 4 formed in a rectangular box shape, and a bottom plate 5 that closes an opening at the bottom side of the cabinet 4. Further, as shown in FIG. 1, the apparatus main body 3 has a disk mounting portion 6 on the upper surface side, which is sufficient for mounting a cartridge accommodating an optical disk having a diameter of, for example, 8 ㎓. It is formed into a size large enough to be placed on the palm, and has a width (W) of about 10.5 cm, a length (L) of about 13 cm, and a height (H) of 4.5 cm. It is formed in size.

The disk rotation drive mechanism 1 and the optical pickup 2 are mounted on a chassis substrate 7 formed by punching out a metal plate, and are arranged in the cabinet 4 via the chassis substrate 7. By the way, the disc rotation drive mechanism 1 includes a disc table 8 on which an optical disc is placed and which is rotationally driven together with the optical disc, and a spindle motor 9 which rotationally drives the disc table 8.
It consists of and.

As shown in FIG. 2, the spindle motor 9 is attached to the lower surface side of the chassis substrate 7 with the spindle 10 protruding from the upper surface side of the chassis substrate 7. The disk table 8 on which the optical disk is placed is integrally attached to the tip of the spindle 10 so as to rotate integrally with the spindle 10. At the center of the disc table 8, there is provided a centering member 11 that fits in the center hole of the optical disc and that aligns the center of rotation of the disc table 8 with the center of the optical disc.

The centering member 11 is attached so as to be movable in the axial direction of the spindle 10 by being elastically biased by a coil spring or the like, and when the optical disk is placed on the disk table 8, the centering member 11 is moved in the axial direction of the spindle 10. Fits in the center hole of the optical disc while being elastically displaced,
The center hole of this optical disk is made to coincide with the rotation center of the disk table 8.

The optical pickup 2 is a pickup feed motor 1 attached to the lower surface of the chassis substrate 7.
It is supported by a feed screw 13 that is driven to rotate by 2 and a slide guide block (not shown) attached to the lower surface side of the chassis substrate 7, and is supported so as to be linearly movable in the radial direction of the optical disc mounted on the disc table 8. ing. Therefore, the optical pickup 2 is fed and operated in the radial direction of the optical disc by driving the pickup feed motor 12 to rotate the feed screw 13.

The chassis substrate 7 to which the disk rotation drive mechanism 1 and the optical pickup 2 are attached has an attachment piece 14 formed by bending an L-shape so as to hang down a portion of the chassis substrate 7 near each corner. It is mounted in the cabinet 4 by being fixed to the mounting support piece 15 projecting near the corner portion in the cabinet 4 with the fixing screw 16.

Then, the mounting piece 14 and the mounting support piece 15
In the meantime, when a disturbance such as a shock is applied to the cabinet 4, the disturbance such as the shock is transmitted to the chassis substrate 7 and the feeding operation of the optical pickup 2 and the disk rotation drive mechanism 1 are performed.
The buffer 17 is provided so as not to hinder the rotation operation of the optical disc by the. This buffer 17
It is formed of an elastic body such as rubber having a large elasticity, and is configured by fitting a coil spring 18 therein to obtain a predetermined elastic force as needed.

The cushioning body 17 is supported by fitting the fitting groove portion 17a formed on the outer periphery of the central portion into the notch concave portion 14a formed on the mounting piece 14, and mounting the chassis substrate 7 on the cabinet 4. Then, as shown in FIG. 2, it is interposed between the mounting piece 14 and the mounting support piece 15.

A disk cartridge containing an optical disk to be mounted on the disk table 8 is mounted on the upper surface side portion of the cabinet 4 where the disk table 8 of the disk rotation drive mechanism 1 mounted via the chassis substrate 7 is located. The disk mounting unit 6 is configured.

A positioning pin 20 and a height positioning pin 21 for positioning the cartridge mounted in the disk mounting portion 6 in the horizontal and height directions are erected on the upper surface side of the chassis substrate 7.

Further, in the cabinet 4, a disk reproducing device such as a signal processing circuit for processing an information signal from the optical disk read by the optical pickup 2 and a control circuit for controlling the transfer of the optical pickup 2 is constructed. An electric circuit board 22 that constitutes a necessary electric circuit is provided. As shown in FIG. 2, the electric circuit board 22 is provided with a boss portion provided so as to hang down in the cabinet 4 along the bottom plate 5 which is the lower surface side to which the chassis board 7 in the cabinet 4 is attached. It is attached to 23 with screws 24.

Then, the cartridge holder 25 is attached through the chassis substrate 7 to which the disc rotation drive mechanism 1 and the optical pickup 2 are attached.
The cartridge holder 25 operates to mount the cartridge 200 configured as shown in FIG. 16 and FIG.
The optical disc 201 housed in the disc is positioned and placed on the disc table 8, and the disc mounting portion 6
The lower position with the lid closed to cover the cartridge 20
So that it can be rotated over the open position, which is the ascending position where the disc mounting portion 6 that allows 0 insertion / removal is opened.
It is attached to the chassis substrate 7.

The cartridge 200 mounted in the reproducing apparatus of this embodiment will be described below.
00 is the upper half 20 as shown in FIG. 16 and FIG.
The optical disc 201 is rotatably housed in a cartridge body 202 formed by butt-joining the lower half 204 and the lower half 204.

The cartridge body 202 is shown in FIG.
As shown in FIG. 19 and FIG. 19, an opening 205 for exposing a part of the signal recording surface of the optical disc 201 to the outside in the radial direction.
When the optical disc 201 is opened, the optical disc 201 is continuously formed in the substantially central portion of the cartridge main body 202 continuously with the opening 205.
Disk table insertion opening 206 into which the disk table 8 of the disk rotation drive mechanism 1 for rotating the disk
Has been established.

Further, a pair of thin reinforcing plates 301 and 302 are integrally formed with the upper half 203 and the lower half 204, respectively, from the front surface of the cartridge of the opening 205, that is, from the front end surface of the cartridge in the opening 205 to the optical disk accommodating space. Has been formed. Therefore, FIG.
As shown in 0, the surface of the upper half 203 and the reinforcing plate 301
A space having substantially the same thickness t is formed between the surfaces of and the surface of the lower half 204 and the surface of the reinforcing plate 302.

Further, in the cartridge body 202,
Opening 205 and disk table insertion opening 206
Dust and the like enter the cartridge body 202 through the
To prevent the signal recording surface of the optical disc 201 housed therein from being contaminated, a shutter 207 that closes the opening 205 and the disc table insertion opening 206 is movably attached.

The shutter 207 is formed by bending a thin metal plate into a U-shaped cross section, and includes a pair of upper and lower cover plates 207a,
The opening 205, the disk table insertion opening 206, and the cartridge 20 are formed on the front plate 207b and the front plate 207c.
No. 0 front surface portion (reinforcing plates 301 and 302) is integrally mounted so as to be fitted to the cartridge main body 202. And this shutter 2
Reference numeral 07 indicates the opening 20 when the cartridge 200 is not attached to the reproducing apparatus according to the present embodiment and is not used.
5, the shutter closing spring 210 (see FIG. 1) so as to close the disk table insertion opening 206 and the front surface portion (reinforcing plates 301 and 301) of the cartridge 200.
(See 7)).

Further, the pair of cover plates 2 of the shutter 207.
A shutter opening / closing provided at a tip of a shutter opening arm that constitutes a shutter opening mechanism, which will be described later, provided on the side of the cartridge holder 25 in which the cartridge 200 is mounted is provided near one side of the front plate connecting the 07a and 207b in series. A pin engaging hole 208 for engaging the pin is provided. Then, in the shutter 207, when the cartridge 200 is inserted into the cartridge holder 25, the shutter opening / closing pin engages with the pin engaging hole 208.

Further, by inserting the cartridge 200 into the cartridge holder 25, the shutter opening arm is pivotally operated, and following the pivoting of the shutter opening / closing arm, the biasing force of the shutter closing spring 210 is resisted. Then it is moved. By moving the shutter 207 against the urging force of the shutter closing spring 210, as shown in FIG.
8 and FIG. 19, the opening 205, the disk table insertion opening 206, and the front portion (the portion of the reinforcing plates 301 and 302) of the cartridge 200 are opened.

Next, as shown in FIGS. 3 and 4, the cartridge holder 25 into which the cartridge 200 is inserted and held is formed in a substantially flat plate shape having a size sufficient to insert and hold the cartridge 200, and the Cartridge support portions 26 and 27 that support both sides of the cartridge 200 are integrally formed on the opposite sides. These cartridge supporting portions 26 and 27 are provided in the cartridge holder 2
5 is formed by bending both sides of the main surface portion 28 into an L shape.

The opening on the front side, which is orthogonal to both sides where the cartridge supporting portions 26 and 27 are formed, constitutes the insertion / removal opening 29 of the cartridge 200. A cartridge receiver 30 is provided on the upper edge side of the insertion / removal port 29 so as to surely and easily insert the cartridge 200 into the cartridge holder 25 so as to project from the front edge of the cartridge holder 25. The cartridge receiver 30 is formed as a synthetic resin molded body similar to the cartridge body 202 made of synthetic resin, and is attached to the outer periphery of the front side of the cartridge holder 25 so as to surround the insertion / removal opening 29. The lower surface of the cartridge receiver 30 on the side of the insertion / removal opening 29 is an inclined guide surface, and is formed so as to guide the insertion of the cartridge 200 to be inserted into the cartridge holder 25.

This cartridge holder 25 is provided with an insertion / removal port 2
Both sides on the rear end side facing the front side on which the chassis 9 is provided are rotatably supported by a pair of holder attachment pieces 31, 31 provided on both sides of the rear end side of the chassis substrate 7. That is, in the cartridge holder 25, the shaft fitting holes formed in the pair of rotation supporting pieces 32, 32 formed upright on both sides of the rear end side are projected into the surfaces of the holder mounting pieces 31, 31 facing each other. By being fitted to the provided pivot shafts 33, 33, they are rotatably supported with respect to the chassis substrate 7.

At a substantially central portion of the main surface portion 28 of the cartridge holder 25, an optical disk mounted on the disk table 8 is shared with the disk table 8 so that the optical disk can be rotated integrally with the disk table 8. A disk clamper 35 that works and holds is attached.
As shown in FIGS. 2 and 4, the disc clamper 35 is supported by a clamper mounting plate 36 rotatably supported on the upper surface side of the main surface portion 28 of the cartridge holder 25, and is formed on the main surface portion 28. The cartridge holder 25 is mounted so as to be able to move forward and backward through the opened opening 37.

As shown in FIG. 2, the disc clamper 35 has a cylindrical portion 39 projecting from the upper surface of a disc pressing plate 38 for pressing and supporting the optical disc, which is inserted into the clamper mounting plate 36, and the cylindrical portion 39 is inserted. The flange portion 40 provided on the upper end side of the above is prevented from falling off from the clamper mounting plate 36 and is supported by the clamper mounting plate 36. That is, the disc clamper 35 is loosely fitted and supported by the clamper mounting plate 36 so as to be movable in the axial direction within the range of the cylindrical portion 39 and freely rotatable.

A magnet 41, which is made of a magnetic material such as a metal plate and attracts to the disk table 8, is attached to the surface of the disk clamper 35 facing the disk table 8. The magnet 41 ensures that the optical disc can rotate integrally with the disc table 8 when the disc clamper 35 cooperates with the disc table 8 and holds the optical disc. Further, an engaging projection 35a that engages with a positioning engaging recess 8a formed in the axial center of the disk table 8 is provided at the center of the surface of the disk clamper 35 facing the disk table 8. .

When the disc clamper 35 is attracted to the disc table 8, the engaging projections 35a engage with the positioning engaging recesses 8a so that the rotation centers of the disc clamper 35 and the disc table 8 coincide with each other. To be Then, the clamper mounting plate 36 supporting the disc clamper 35 has shaft insertion holes formed in the pair of support pieces 42, 42 formed by bending so as to face each other at the base end side, and has a main surface portion of the cartridge holder 25. It is made to pass through a support shaft 46 which is inserted and supported between a pair of support pieces 45 formed by cutting and raising a part of 28, and is rotatable with respect to the main surface portion 28 of the cartridge holder 25 around this support shaft 46. Supported by.

Further, the clamper mounting plate 36 is rotated in the direction of arrow A in FIG. 2 so that the disk clamper 35 projects inward of the cartridge holder 25 by the torsion coil spring 47 wound around the support shaft 46. Being energized.

The clamper mounting plate 36 is the main holder of the cartridge holder 25 when the cartridge holder 25 is rotated from the lowered position where the disc mounting portion 6 is closed to the raised position where the disc mounting portion 6 is opened. Face 28
2 is rotated in the direction opposite to the arrow A direction in FIG. 2 by a clamper mounting plate rotation operation lever 48, which will be described later, mounted on the upper surface of the disk holder 25. Retreat from inside to outside.

That is, the clamper mounting plate 36 is
When the cartridge holder 25 is in the raised position with the disc mounting portion 6 opened and at the position where the disc cartridge can be inserted and removed, the disc clamper 35 is retracted to a position that does not hinder the insertion and removal of the disc cartridge with respect to the cartridge holder 35. Let

Further, as shown in FIGS. 4 and 5, the shutter 207 of the disk cartridge 200 inserted and held in the cartridge holder 25 is moved to the cartridge holder 25, and the cartridge main body 202 is moved.
There is provided a shutter opening / closing mechanism 50 that opens the opening 205 and the disc table insertion opening 206 that are opened in the above, and exposes the signal recording surface of the optical disc 201 and the peripheral portion of the center hole 201a to the outside.

The shutter opening / closing mechanism 50 is rotated by the cartridge 200 inserted into the cartridge holder 25 to move the shutter 207 against the urging force of the shutter closing spring 210, and a shutter opening arm 51. A shutter opening arm rotation operating lever 53 urged and moved by a tension spring 52 for rotating the shutter opening arm 51 to a return position when the cartridge holder 25 is rotated to a raised position, and the shutter opening arm. The rotation lever 53 is locked to hold the shutter opening arm 51 at the rotation position where the shutter 207 of the cartridge 200 is opened, and the cartridge holder 25 is rotated to the raised position side. The shutter release arm rotation operation lever of the lock lever 54 It is constituted by the lock release lever 55 for releasing the lock on over 53.

The shutter opening arm 51 is
As shown in FIG. 3, a shutter opening / closing pin 56 that engages with a pin engaging hole 208 formed in the shutter 207 of the disk cartridge 200 is set up at the tip end side of the long arm portion 51a, so that the arm portion 51a is provided with A pivotal support portion 57 for the cartridge holder 25, which is formed by bending the base end side into a U-shape, is provided on the base end side.

In this shutter opening / closing arm 51, the arm 51a is extended to the inner surface side of the cartridge holder 25 so that the shutter opening / closing pin 56 faces the disc cartridge insertion / ejection opening 29 of the cartridge holder 25, and the pivotal support 57 is formed in the cartridge. The holder 25 is pivotally supported by a rotation support shaft 58 that is erected on the rear end side of the holder 25, and is attached so as to be rotatable in the directions of arrows B and C in FIG. 3 about the rotation support shaft 58.

The rotary support shaft 58 is planted on a shaft planting piece 59 formed by bending a part of the rear end side of the cartridge holder 25 into an L shape. The pivot support portion 57 of the shutter opening / closing arm 51 is rotatably supported by inserting the insertion hole formed in communication with the pivot support portion 57 into the rotation support shaft 58.

Further, the shutter opening arm rotation operation lever 53 has a pair of slide guide pins 61, 61 standing on the upper surface of the main surface portion 28 of the cartridge holder 2 with long holes 62, 62 having a long diameter in the longitudinal direction, respectively. They are engaged with each other and slidably supported within the range of these long holes 62, 62. The shutter opening arm rotation operating lever 53 is formed by cutting and raising a spring bridge piece 63 formed by cutting and raising a part of the main surface portion 28 of the cartridge holder 2 and one side of the shutter opening arm rotation operating lever 53 in the middle thereof. The tension springs 52 stretched between the spring bridge pieces 64 formed in this manner are urged to move in the direction of arrow D in FIG.

The shutter opening / closing arm 51 is
An engaging hole 66 formed as a long hole in a lever connecting piece 65 projecting from one piece on the upper end side facing the arm portion 51a of the pivotal support portion 57 is provided at a middle portion on the other side of the shutter opening arm rotation operation lever 53. It is connected to the shutter opening arm rotation operation lever 53 by engaging with the upright rotation guide pin 67. By being connected to the shutter opening arm rotation operation lever 53 in this way, the shutter opening / closing arm 51 causes the shutter opening arm rotation operation lever 53 to move and bias the shutter opening arm rotation operation lever 53 in the direction of arrow D in FIG. In response to the urging force of 52, it is rotationally urged in the direction of arrow C in FIG.

By the way, the cartridge holder 25 is pivotally operated to a position where the cartridge 200 can be mounted, and the shutter opening arm pivoting operation lever 53 receives the biasing force of the tension spring 52. In FIG.
When the shutter opening / closing arm 51 is in the state of being moved in the direction of arrow D, the shutter opening / closing arm 51 receives the biasing force of the tension spring 52, and the shutter opening / closing pin 56 moves.
The pin 200 is opposed to the pin engaging hole 208 formed in the shutter 207 of the cartridge 200 to be inserted into the cartridge 5, and is maintained in a state of being urged by one movement so as to be positioned to be engageable with the pin engaging hole 208. To be

Further, on one side of the tip end side of the shutter opening arm rotation operation lever 53, a lock claw 68 which engages with a lock pin 67 which is set up at one end side of the lock lever 54.
Is provided. The lock pawl 68 is rotated in the arrow B direction in FIG. 3 so that the cartridge 200 is inserted into the cartridge holder 25 and the shutter opening / closing arm 51 opens the shutter 207 by the cartridge 200. Following the rotation of 51, the shutter opening arm rotation operation lever 53 is engaged with the lock pin 67 when moved in the direction of arrow E in FIG. Then, the shutter opening arm rotation operating lever 53 is held at the position moved against the biasing force of the tension spring 52, and the shutter opening / closing arm 51 is held at the position where the shutter 207 of the cartridge 200 is opened.

The shutter opening arm rotation operation lever 5
A lock lever 54 for locking 3 in a position where it is moved and operated against the urging force of the tension spring 52 is formed in a substantially V shape, and the shutter opening arm rotation operation lever 5 is provided at one end side.
The lock pin 67 that engages with the lock claw 68 of 3 is planted,
A pressed operation pin 69, which is pressed by the lock release lever 54, is planted on the other end side. The lock lever 54 has an insertion hole formed in the center thereof so that the lock pin 67 faces the lock claw 68 of the shutter opening arm rotation operation lever 53.
It is inserted into a support shaft 70 that is planted on the upper surface of the main surface portion 28 and is rotatably attached around this support shaft 70.

The lock lever 54 is wound around the support shaft 70, one end of which is locked to the lock pin 67, and the other end is formed by cutting and raising a part of the main surface portion 28 of the cartridge holder 25. The torsion coil spring 72 locked to the spring locking piece 71 is rotationally biased in the direction of arrow F in FIG. In the lock lever 54, a rotation restricting piece 77 bent at one end is formed on the cartridge holder 25.
The rotation biasing position by the torsion coil spring 72 is regulated by being engaged with the rotation regulation hole 78 formed in the main surface portion 28.

Further, as shown in FIG. 5, a lock release lever 55 for releasing the lock of the lock lever 54 with respect to the shutter opening arm rotation operation lever 53 by the rotation operation of the cartridge holder 25 to the raised position side, is shown in FIG.
The pair of slide guide pins 80, 80 that are erected on the upper surface of the main surface portion 28 of the cartridge holder 2 are engaged with the long holes 81, 81 having a longer diameter in the longitudinal direction, respectively, and the moving direction of the shutter opening arm rotation operation lever 53. The cartridge holder 25 is mounted on a slide lever 82 slidably supported in the range of the long holes 81, 81 in the front-rear direction of the cartridge holder 25.

As shown in FIG. 4, the slide lever 82 is connected to the chassis substrate 7 via a turning lever 83, and the cartridge holder 2 is connected via the turning lever 83.
In conjunction with the rotation operation of 5, the slide operation is performed in the arrow G and H directions in FIG. By the way, the rotating lever 8
3, 3 has one end pivotally supported by a shaft mounting piece 84 provided on one side of the chassis substrate 7 via a support shaft 85,
The slide lever 82 is connected to the chassis substrate 7 by pivotally supporting the other end through a support shaft 87 on a shaft mounting piece 86 that is formed upright on one side of the rotating lever 83.

The lock release lever 55 mounted on the slide lever 82 is formed of a synthetic resin molded body, and elastically displaces with the pin pressing arm portion 88 for pressing the pressed operation pin 69 on the lock lever 54. The arm portion 89 is formed in a substantially U shape so as to face each other.
On the outer surface side of the pin pressing arm portion 88, an inclined cam portion 88a for pressing the operated pin 69 to be pressed.
Are formed.

The lock release lever 55 pivotally supports the base end portion connecting the pin pressing arm portion 88 and the elastic displacement arm portion 89 with the support shaft 90 erected on the slide lever 82. Elastic displacement arm section 89
Further, each tip side of the pin pressing arm portion 88 is attached by being engaged with engaging pieces 91 and 92 formed by cutting and raising a part of the slide lever 82.

The lock release lever 55 mounted on the slide lever 82 as described above is used for the cartridge holder 2
When the slide lever 8 is rotated in the upward position direction of the slide lever 8,
When 2 is slid, the tilted cam portion 88a pushes the pushed operation pin 69, and the lock lever 54 is twisted against the biasing force of the coil spring 72.
The lock pin 67 that engages with the lock claw 68 of the shutter opening arm rotation operation lever 53 is disengaged. At this time, the lock release lever 55 is rotated about the support shaft 90 of the pin pressing arm portion 88 while the elastic displacement arm portion 89 is elastically displaced. That is, the elastic displacement arm portion 89 functions as a limiter to perform a stable rotation operation of the lock lever 54.

A disc clamper contact / separation mechanism 93 for contacting / separating the above-mentioned disc clamper 35 with respect to the disc table 8 is interlocked with the cartridge holder 25 in association with the rotational operation of the cartridge holder 25 to the lowered position and the raised position. Is provided.

The disc clamper contacting / separating mechanism 93 pivotally operates the clamper mounting plate 36 in conjunction with the pivotal operation of the cartridge holder 25, and the disc clamper 35 supported by the clamper mounting plate 36 is placed in the cartridge holder 25. The disc clamper 35 is brought into and out of contact with the disc table 8 by moving the cartridge holder 25 forward and backward, and the clamper mounting plate pivoting operation connected to the slide lever 82 slid by the pivoting operation of the cartridge holder 25 is performed. It is composed of a lever 48.

This clamper mounting plate rotation operation lever 48
As shown in FIG. 4 and FIG.
5, a pivot 94 is erected on the main surface 28 of the main body 28, and a substantially central portion is pivotally supported, and a rotation guide hole 95 having a major axis in the longitudinal direction is bored on the base end side. It is attached by engaging with a rotation guide pin 96 that is planted on the side. In this way, the clamper mounting plate rotation operation lever 48 mounted on the main surface portion 28 of the cartridge holder 25
Is operated by sliding the slide lever 82 in the directions of arrow G and H in FIG.
The rotation operation is performed in the directions of arrows I and J in FIG.

At the tip end side of the clamper mounting plate rotating operation lever 48, a clamper mounting plate rotating operation portion for rotating the clamper mounting plate 36 by rotating the clamper mounting plate rotating operation lever 48. 97 is provided. The clamper mounting plate rotating operation portion 97 is formed in an arc shape along the rotating direction of the clamper mounting plate rotating operating lever 48. The clamper mounting plate rotating operation portion 97 is provided on the clamper mounting plate 36.
Riding guide piece 9 formed by cutting and raising a part of one side
The riding sloped guide surface 97a is formed on the one end side facing 8 and the rotation operation surface 97b having a predetermined height is formed continuously with the riding sloped guide surface 97a.

This clamper mounting plate turning operation lever 48
When the cartridge holder 25 is in the state of being rotated to the lowered position side, the clamper mounting plate rotating operation portion 97
Is connected to the slide lever 82 so that the riding-up inclined guide surface 97a is in contact with and facing the riding-up guide piece 98 without riding on the riding-up guide piece 98 of the clamper mounting plate 36. That is,
When the cartridge holder 25 is rotated to the lowered position side, the disk clamper 35 is attracted to the disk table 8 side, and the clamper mounting plate rotation operation lever 48 cooperates with the disk table 8 to drive the optical disk. Is ready to be held.

Further, in the reproducing apparatus according to the present embodiment, not only the cartridge 200 described above can be mounted but also the optical disk alone can be mounted. Therefore, even when the cartridge 200 is not mounted, the shutter opening arm is opened. A shutter opening arm moving operation mechanism 99 is provided as shutter opening member moving operation means for releasing 51 to a position that does not impede the rotation of the optical disk placed on the disk table 8 and rotated.

This shutter opening arm movement operation mechanism 99
Is rotated by rotating the cartridge holder 25 in the descending direction, and slides the shutter opening arm rotating operation lever 53 in the direction of arrow E in FIG. 5 against the biasing force of the tension spring 52. Shutter release arm 51,
In FIG. 3, a shutter opening arm movement operation lever 100 that is rotated in the direction of arrow B is provided. As shown in FIGS. 4 and 5, the shutter opening arm movement operation lever 100 has a connecting arm portion 100a connected to a slide lever 82 and a shutter opening arm rotation operation lever 53 that is erected on one side of the middle portion. The lever operation arm portion 100b that engages with the pressing pin 101 is provided.

As shown in FIGS. 4 and 5, the shutter opening arm movement operation lever 100 is provided with a support shaft 102 that is planted on the main surface portion 28 of the cartridge holder 25.
The substantially central part is pivotally supported, and the engaging hole formed at the tip end side of the connecting arm part 100a is engaged with the engaging pin 104 that is set up in the middle part on one side of the slide lever 82 to operate the lever. One end of the arm portion 100b is attached to one end of the arm portion 100b so as to be engaged with the pressed pin 101 set up on the shutter opening arm rotation operation lever 53.

In the shutter opening arm movement operation lever 100 thus mounted, the cartridge holder 25 is rotated in the lowering direction, and the slide lever 82 is moved to the position shown in FIG.
When the slide operation is performed in the direction of the arrow G, the support shaft 101 is rotated in the direction of the arrow K in FIG. 5, and the lever operation arm unit 100b presses the pressed pin 101, Shutter release arm rotation operation lever 5
5 is slid in the direction of arrow E in FIG. The shutter opening arm 5 is slid in the direction of arrow E in FIG.
3 is rotated in the direction of arrow B in FIG. 3, and when the cartridge holder 25 is rotated to the lowered position, the shutter opening arm 51 is placed on the disk table 8 to rotate the optical disk. Escape to a position that does not interfere.

Further, in this embodiment, as shown in FIG.
On the main surface portion 28 of the cartridge holder 25, a projection 303 that is a means for detecting opening / closing of the shutter is provided near the shutter opening arm 51 and near the end surface on the side opposite to the insertion / removal opening 29. That is, this protrusion 303 is shown in FIG.
As shown in FIG. 1, the shutter 207 is provided at a position facing the front plate 207c of the shutter 207 when the cartridge 200 is inserted into the cartridge holder 25.

The height of the projection 303 is such that when the cartridge 200 is inserted into the cartridge holder 25, it projects inward in the thickness direction of the cartridge 200, and as shown in FIG. It has such a height that it does not come into contact with the provided reinforcing plate (particularly the reinforcing plate 301). Therefore, when the cartridge 200 is further inserted and the shutter 207 is completely opened by the shutter opening arm 51,
Since the protrusion 303 and the shutter 207 do not face each other,
The cartridge 2 is inserted relative to the insertion of the cartridge 200.
00 from the front side to the rear side of the cartridge 200 through the opening 205 (see FIG. 18).

On the other hand, when the shutter 207 is not opened for some reason, the front plate 207 of the shutter 207 is opened.
Since the c and the protrusion 303 face each other, the cartridge 200
While the insertion of the cartridge into the cartridge holder 25 progresses, the front plate 207c of the shutter 207 collides with the protrusion 303, and the protrusion 303 prevents further insertion of the cartridge 200.

Further, in the reproducing apparatus according to the present embodiment, the keyboard lid 111 which constitutes the first lid 110 together with the above-mentioned cartridge holder 25 is attached. As shown in FIG. 1, the keyboard lid 111 includes a disc mounting portion 6 formed on the upper surface side of the apparatus body 3.
A plurality of reading and reproducing desired information from the optical disc, which controls reading operation of the information signal recorded on the optical disc mounted on the disc mounting portion 6 on the surface side facing the upper surface side when the cover is closed. A keyboard 113 is provided as an operation unit in which the key switches 112 are arranged.

This keyboard 113 is formed by arranging a plurality of key switches 112 on a key switch mounting substrate 114, and each key switch 113 is attached to the keyboard lid 111.
The key switch mounting substrate 114 is mounted so as to be supported on the inner surface side of the keyboard lid 111 by projecting to the upper surface side from the through hole 115 formed in the. The key switch mounting substrate 114 is covered with a cover plate 116 arranged on the inner side surface of the keyboard lid 111.

As shown in FIGS. 1 and 3, the keyboard lid 111 having the keyboard 113 arranged on the upper surface side is superposed on the upper surface side of the cartridge main body 25 supported on the apparatus main body 3 side as shown in FIGS. The support plates 119 and 119 provided on the inner surfaces of the lid mounting portions 117 and 118, which are formed so as to stand upright on both sides on the rear end side of the cabinet 4 constituting the apparatus main body 3, face each other on the rear end sides. The rotation support plates 121, 121 attached are used as support shafts 123, 12
It is pivotally attached to the apparatus main body 3 by being pivotally supported via 3.

The keyboard lid 111 securely holds the closed position and the open position with respect to the apparatus main body 3, so that the toggle spring 12 is provided between the one support plate 119 and the rotation support plate 122.
5 is interposed. As shown in FIG. 7, the toggle spring 125 has an engagement hole 12 in which the tip of one arm portion 125a is formed in the rotation support plate 122 on the keyboard lid 111 side.
6, the other arm portion 125b is attached with the tip of the other arm portion 125b locked to a locking pin 127 provided on one side surface of the support plate 119. By interposing the toggle spring 125 in this way, when the keyboard lid 111 is rotated in the closing position direction or the opening position direction with respect to the apparatus main body 3, the keyboard lid 111 is urged to rotate in the respective position directions. Hold each position securely.

A cartridge holder 25 is connected to the keyboard lid 111 so as to be pivotally operated in conjunction with the keyboard lid 111. As shown in FIGS. 2 and 3, the cartridge holder 25 is connected to the keyboard lid 111 by connecting the engaged pieces 128, 128 protruding from both sides of the main surface portion 28 of the cartridge holder 25 to the keyboard lid 111. It is carried out by engaging the engaging pieces 130, 130 projectingly provided on the inner surfaces of both sides facing each other.

The keyboard lid 111 and the cartridge holder 25 attached to the apparatus main body 3 so as to be overlapped with each other in this way are the first lid which is simultaneously rotated by the rotation operation of the keyboard lid 111. The body 110 is formed. That is, this first lid 110
When the lid is closed, the cartridge holder 25 is superposed on the keyboard lid 111 and rotated simultaneously, and when the lid is opened, the engaged pieces 128, 128 and the engaging pieces 130, 130 are opened.
The keyboard lid 111 by engaging with each other.
The cartridge holder 25 is subsequently rotated.

Further, a second lid body 132 serving as an outer lid is attached to the apparatus body 3 which constitutes the reproducing apparatus according to the present embodiment.

The second lid 132 functions as a display panel for displaying, as image information, information read and reproduced from the optical disk in which the reproducing apparatus according to the present embodiment is mounted, and the inner surface of the second lid 132 is provided. As shown in FIGS. 1 and 2, a display unit 133 is provided. This display 1
The reference numeral 33 designates, for example, the liquid crystal display panel 134 on the inner surface side of the second lid body 132.
It is configured to be supported by 35.

As shown in FIGS. 1 and 2, the second lid body 132 is superposed on the first lid body 110 rotatably supported by the apparatus body 3. Is rotatably supported on the upper end sides of the inner side surfaces of the lid mounting portions 117 and 118, which are formed so as to stand up on both sides of the rear end side of the cabinet 4 on which the first lid body 110 is supported. There is.

That is, in the second lid body 132, the base end side portion which is narrowed at the rear end side has the pair of lid mounting portions 1
The lid mounting portions 117, 1 are provided so as to be fitted between the lids 17, 118 via friction pins 136, 136 capable of holding the turning position at an appropriate angle.
18 is rotatably attached.

As shown in FIG. 1, a lock member 138 that engages with a lock portion 137 provided in the apparatus main body 3 is provided on one side of the front end side of the second lid body 132. By providing such a lock member 138,
The second lid body 132, which is superposed on the first lid body 110 and closed by the apparatus main body 3, can be reliably held at the closed position. Then, only the second lid 132 that overlaps the uppermost surface side is closed and locked, so that the first lid 110 and the cartridge holder 25 that interlocks with the first lid 110 are securely held at the closed position. It is possible to prevent accidental opening of the lid.

A state in which the cartridge 200 is mounted on the reproducing apparatus configured as described above will be described.

First, in order to mount and operate the cartridge 200, the lock member 138 is operated to release the lock of the second lid body 132 on the apparatus main body 3, and the second lid body 132 described above is released.
Open the lid. Then, the first lid 110 is opened,
As shown in FIGS. 1 and 6, the cartridge holder 25 is placed in a raised position separated from the disc mounting portion 6. In this way, when the cartridge holder 25 is rotated to the raised position, the shutter opening arm rotation operation lever 5
3 receives the urging force of the tension spring 52, the arrow D in FIG.
3, the shutter opening / closing arm 51 is rotated toward the disc clamper 35 side, and the shutter opening / closing pin 56 is inserted into the cartridge holder 25, as shown in FIG.
It is placed at a position facing the pin engaging hole 108 provided in the.

When the cartridge 200 is inserted into the cartridge holder 25 through the insertion / removal port 29 with the shutter 207 facing inward, the shutter opening / closing pin 56 is engaged with the pin engagement hole 108 of the shutter 207. The shutter opening / closing pin 56 is the pin engaging hole 10 of the shutter 207.
When the cartridge 200 is further inserted into the cartridge holder 25 from the state of being engaged with the cartridge 8, the shutter opening arm 51 is pressed by the cartridge 200 and the pivot portion 57 is centered, and the shutter opening arm 51 is in the direction of arrow B in FIG. Is rotated to. This shutter opening arm 51 has an arrow B in FIG.
The shutter 2 of the cartridge 200 is rotated by the rotation in the direction.
07 is moved and operated in the direction of opening the opening 205 of the cartridge body 202 and the opening 206 for inserting the disc table against the biasing force of the shutter closing spring 210.

When the shutter opening arm 51 is rotated by inserting the cartridge 200,
The shutter opening arm rotation operation lever 53 receives the turning force of the shutter opening arm 51, and slides in the direction of arrow E in FIG. 5 against the biasing force of the tension spring 52. Then, when the cartridge 200 is completely inserted into the cartridge holder 25, as shown in FIGS. 8 and 9, the shutter 207 is opened by the shutter opening arm 51, and the opening 205 and the disk table insertion opening 206 are formed.
Is operated to the position where is completely opened. At this time, the shutter opening arm 51 reaches a state in which it is rotated to the rear end side position of the cartridge holder 25, and the shutter opening arm rotating operation lever 53 moved and operated by the shutter opening arm 51 is shown in FIG. So that the lock claw 6
8 is locked by being engaged with the lock pin 67 of the lock lever 54, and the shutter opening arm 51 is released from the shutter 20.
Hold 7 in the open position. At this time, the cartridge holder 25 is placed in the raised position without being rotated,
As shown in FIG. 8, the slide lever 82 is not slid without rotating the rotary lever 83.

When the shutter 207 is opened, the reinforcing plate 3 is provided on the front surface of the cartridge 200.
01 and 302 are exposed, and a protrusion 303 provided on the main surface portion 28 of the cartridge holder 25 faces the inside of the opening portion 205 (see FIG. 18) from the front surface of the cartridge 200, relative to the insertion of the cartridge 200.
It will enter toward the rear side.

In the cartridge 200, the shutter opening arm rotation operation lever 53 is locked by the lock lever 54, and the shutter opening / closing arm 51 is connected to the shutter 2.
Since the shutter opening / closing arm 51 is held in the opened position, the shutter opening / closing arm 51 receives the supporting force and holds the cartridge in the cartridge holder 25.

When the cartridge 200 is inserted as described above and the shutter 207 is opened, the first lid 110 is rotated in the direction to close the disc mounting portion 6 of the device holder 3, and the cartridge holder is opened. 25 is also rotated in the descending position direction in the direction of closing the disc mounting portion 6. Then, when the cartridge holder 25 is rotated to a lowered position where it closes the disc mounting portion 6, the disc table 8 enters into the cartridge body 202 through the disc table insertion opening 206 of the opened cartridge body 202. Then, the optical disc 201 housed in the cartridge body 202 is placed on the disc table 8. At this time, the optical disc 201 is placed on the disc table 8 with its center hole engaged with the centering member 11 so as to be centered with respect to the disc table 8. Further, at this time, the cartridge 200 is positioned by the positioning pin 20 and the height positioning pin 21 provided on the chassis substrate 7, positioned in the horizontal direction and the height direction, and mounted on the disc mounting portion 6.

Further, when the cartridge holder 25 is rotated in the descending position direction in the direction of closing the disc mounting portion 6, the slide lever 82 is moved via the rotation lever 83.
Is slid in the direction of arrow G in FIGS. 10A and 10B. At this time, the slide lever 82 moves the tension spring 8
Since it is urged to move in the direction of arrow G in FIG. 10A by 2a, the sliding operation in the direction of arrow G in FIG. 10A is reliably performed.

In this way, the slide lever 82 is moved to the position shown in FIG.
When slide operation is performed in the direction of arrow G in A, the clamper mounting plate rotation operation lever 48 connected to the slide lever 82 is moved around the support shaft 94 as indicated by arrow I in FIG. 10A.
It is operated to rotate in the direction. When the clamper mounting plate rotating operation lever 48 is rotated in this manner, the clamper mounting plate rotating operation portion 97 on the front end side, which keeps the clamper mounting plate 36 rotated to the raised position, operates as shown in FIG. 10A. As shown in FIG. 4, the clamper mounting plate 36 is removed from the clamper mounting plate 36 to release the clamper mounting plate 36 from the rotating operation state to the raised position. When the clamper mounting plate 36 is released from the rotating operation state by the clamper mounting plate rotating operation portion 97, the clamper mounting plate 36 receives the urging force of the torsion coil spring 47, and as shown in FIG.
The disk clamper 35 is rotated in the direction of arrow A in the middle.
Are projected into the cartridge holder 25. Then, the disc clamper 35 is attracted to the disc table 8 side by the attraction force of the magnet 41, and the optical disc 201 mounted on the disc table 8 cooperates with the disc table 8 as shown in FIG. And the optical disk 201 is made rotatable with the disk table 8 integrally.

On the other hand, for some reason, the shutter 20 of the cartridge 200 inserted in the cartridge holder 25 is
When the cartridge 7 is not opened, the shutter 207 of the cartridge 200 collides with the protrusion 303, so that the cartridge 20
When 0 is set, further insertion is impossible. Therefore, in this case, the first lid 110 is attached to the disc mounting portion 6 of the apparatus main body 3.
It becomes impossible to rotate the cartridge 200 in the direction to close it, and it is possible to prevent the cartridge 200, which was not opened by the shutter 207, from being mounted on the disk mounting portion 6. as a result,
Unlike the conventional case, the cartridge 200 is mounted on the disk mounting portion 6 even if the shutter 207 is not opened, and the precision mechanism such as the optical pickup 2 and the disk rotation drive mechanism 1 is damaged by the collision with the shutter 207. Accidents can be prevented in advance, and the reliability of the playback device can be improved.

Next, after mounting the cartridge 200,
A state in which a desired information signal is read from the optical disc 201 in the cartridge 200 and reproduced will be described.

As described above, when the cartridge 200 is mounted on the disc mounting portion 6, as shown in FIG. 14, the first lid 110 covers the disc mounting portion 6 and is attached to the device holder 3. In contrast, it is in a closed state. At this time, the keyboard 113 is on the upper surface side of the first lid body 110 and faces the upper surface of the apparatus body 3. At this time,
The display unit 1 disposed on the inner surface side of the second lid body 132, as shown in FIG. 14, by appropriately rotating the second lid body 132.
33 is set to an appropriate angle so as to face outward.

Here, the start / stop button 140 provided on the front side of the apparatus main body 3 is operated to move the optical disk 201.
Of the information signal recorded on the optical disc 201 is set to a read / reproduce state, and the key switch 112 constituting the keyboard 113 is operated.
Read out desired information. Then, the desired information read from the optical disc 201 and reproduced is displayed as image information on the display unit 133 of the second lid 132.

As described above, after the reading and reproduction of the desired information is completed, in order to eject the cartridge 200 from the apparatus main body 3, the start / stop button 140 is operated to bring the device into the stop state, and then the device is stopped. The first lid 110 is rotated in the lid opening direction. When the first lid 110 is rotated in the opening direction, the cartridge holder 25 is also rotated in the same direction to reach the elevated position with respect to the apparatus body 3. This cartridge holder 25
Is rotated in the direction of the ascending position in the direction of arrow X in FIG. 10B, the slide lever 82 moves in the direction of arrow H in FIG. 10A.
The slide operation is performed in the direction. When the slide lever 82 is slid in this manner, the slide lever 82
The clamper mounting plate rotation operating lever 48 connected to the center of the support shaft 94 is rotated about the support shaft 94 in the direction of arrow J in FIG. As shown in FIG. 8, the clamper mounting plate 36 enters the lower surface side of the clamper mounting plate 36 while abutting on the rotation operating surface 97b of the clamper mounting plate 36, and the clamper mounting plate rotating operation portion 97 causes the clamper mounting plate 36 to move.
Is rotated in the direction of arrow K in FIG. 13 against the biasing force of the torsion coil spring 47. When the clamper mounting plate 36 is rotated in this way, the disc clamper 3 that holds the optical disc 201 in cooperation with the disc table 8 is held.
The reference numeral 5 is separated from the disc table 8 to release the holding of the optical disc 201, and is retracted from the inside of the cartridge holder 25 to the outside.

Following the release of the clamp of the optical disc 201 from the disc table 8, the slide lever 82 is further slid in the direction of arrow H in FIG. 10A, and is mounted on the slide lever 82. The pin pressing arm portion 88 of the lock release lever 55 presses the pressed operation pin 69 of the lock lever 54 to resist the biasing force of the torsion coil spring 72, and the lock lever 54 in the direction of the arrow F in FIG. 10A. Rotate. When the lock lever 54 is rotated in this manner, the engagement between the lock pin 67 and the lock claw 68 of the shutter opening arm rotation operating lever 53 is released, and the shutter opening arm rotation operating lever 53 is pulled. In response to the biasing force of the spring 52, the slide operation is performed steeply in the direction of arrow D in FIG.
When the shutter opening arm rotation operating lever 53 is slid in this manner, the shutter opening arm 51 connected to the lever 53 is moved about the pivot portion 57 as shown in FIG.
The cartridge 200 is rotated in the direction of the arrow C to eject the cartridge 200 to the outside of the cartridge holder 25. At this time, the shutter 207 of the cartridge 200 is operated by the shutter opening arm 51 rotating in the direction of arrow C in FIG. 8 and the urging force of the shutter closing spring 210 to move the shutter 207. The portion 205 and the disc table insertion opening 206 are closed.

The cartridge holder 25 is prevented from being erroneously inserted into the cartridge 200, and one side of the cartridge 200 inserted into the cartridge holder 25 is pressed and supported so that the cartridge 20 can be ejected.
An erroneous insertion prevention member 142 that prevents 0 from being rapidly discharged from the cartridge holder 25 is attached. The erroneous insertion preventing member 142 is formed of a torsion coil spring, and is attached via an attaching piece 143 formed on one side of the main surface portion 28 of the cartridge holder 25 so as to rise, as shown in FIG. A locking piece 14 is formed by projecting an erroneous insertion preventing portion 142a bent in a letter shape inward of the cartridge holder 25, and a locking portion 142b at the other end standing up on the main surface portion 28 of the cartridge holder 25.
It is attached by being locked to No. 4. By providing such an erroneous insertion prevention member 142, the cartridge 200
Is inserted into the cartridge holder 25 from the wrong direction, a part of the cartridge 200 is erroneously inserted.
The cartridge 200 is locked by the 2a, and the insertion of the cartridge 200 into the cartridge holder 25 at the predetermined insertion position is prohibited. Further, at the time of ejecting the cartridge 200, the erroneous insertion prevention portion 142a presses and supports one side surface of the cartridge body 202 to prevent the cartridge 200 from suddenly protruding from the cartridge holder 25.

Then, as described above, the cartridge 2
With 00 discharged from the cartridge holder 25,
The eject operation is completed by removing the cartridge 200 from the cartridge holder 25.

Further, in the storage state in which the reproducing apparatus according to the present embodiment is not used, the first lid 110 is attached to the apparatus main body 3
The disk mounting part 6 on the upper surface side of the
Further, the second lid 132 is rotated toward the apparatus main body 3 side,
By overlapping and closing the first lid 110, the keyboard 113 on the upper surface side of the first lid 110 is covered with the second lid 132, and the second lid 1
The display unit 133 provided at 32 is located on the inner surface side, and
As shown in FIG. Then, in a state where the first and second lids 110 and 132 are closed, the lids 110 and 132 are the main body 3 of the apparatus.
It is all housed in the outer shape of the, and becomes an integrated housing, and can be stored in a bag or the like and can be freely transported.

In the above-mentioned embodiment, an example in which the present invention is applied to a read-only optical disk is shown, but of course, it is applied to a rewritable optical disk and other magneto-optical disks that can be rewritten by optical modulation or magnetic field modulation. be able to.

[0102]

As described above, according to the recording and / or reproducing apparatus for the disk-shaped recording medium of the present invention, when the shutter of the cartridge is opened in the cartridge holder by the shutter opening / closing means, Since the projection that can be inserted from the front surface of the cartridge toward the opening side is formed opposite to the insertion of the cartridge, the open / closed state of the shutter is mechanically detected with a simple configuration. When the cartridge is inserted into the cartridge holder, if the shutter does not open for some reason, it is possible to prevent the cartridge from being inserted and damage the internal precision mechanism (optical pickup, spindle motor, etc.). Can be prevented.

[Brief description of drawings]

FIG. 1 is an embodiment of a recording and / or reproducing apparatus for a disc-shaped recording medium according to the present invention (a reproducing apparatus for an optical disc, hereinafter,
FIG. 3 is a perspective view showing a state in which a first lid and a second lid are opened, which is a reproduction device according to an embodiment).

FIG. 2 is a cross-sectional view showing the internal structure of the reproducing apparatus in the example.

FIG. 3 is an exploded perspective view of the reproducing device according to the embodiment.

FIG. 4 is a rear perspective view showing a cartridge holder portion of the reproducing apparatus according to the embodiment.

FIG. 5 is a plan view showing a state where the cartridge holder has been rotated to the raised position in the reproducing apparatus according to the embodiment.

FIG. 6 is a schematic side view showing a state where the cartridge holder has been rotated to the raised position in the reproducing apparatus according to the embodiment.

FIG. 7 is a partial perspective view showing a state where the first lid is attached to the device body in the reproducing apparatus according to the embodiment.

FIG. 8 is a plan view showing a state in which the cartridge is inserted and held in the cartridge holder in the reproducing apparatus according to the embodiment.

FIG. 9 is a schematic side view showing a rotational position of the cartridge with respect to the chassis substrate in a state where the cartridge is inserted and held in the reproducing apparatus according to the embodiment.

10A is a plan view showing a state where a cartridge holder in which a cartridge is inserted is rotated toward a disc mounting portion side, and FIG. 10B is a plan view where the cartridge holder is rotated toward a disc mounting portion side. It is a schematic side view which shows the rotation position with respect to the chassis substrate in the middle.

FIG. 11A is a front view showing the insertion state of the cartridge inserted in the cartridge holder when the shutter is not opened, as seen from the end surface on the opposite side of the insertion / removal opening of the cartridge. B is a side view showing the above state.

FIG. 12A is a front view showing the insertion state of the cartridge inserted in the cartridge holder when the shutter is open, as seen from the end face on the opposite side of the insertion / removal opening of the cartridge. B is a side view showing the above state.

FIG. 13 is a cross-sectional view of the reproducing apparatus according to the embodiment with the cartridge mounted in the disk mounting portion.

FIG. 14 is a perspective view of a reproducing device according to an embodiment in a use state in which information is read and reproduced.

FIG. 15 is a perspective view of the reproducing apparatus according to the embodiment when the first and second lids are closed with respect to the device body during storage.

FIG. 16 is a perspective view showing a cartridge mounted in the reproducing apparatus according to the embodiment as viewed from the upper side.

FIG. 17 is a perspective view showing a cartridge mounted in the reproducing apparatus according to the embodiment as viewed from the lower surface side.

FIG. 18 is a perspective view of the upper surface side of the cartridge when the shutter is opened.

FIG. 19 is a perspective view from the lower surface side of the cartridge when the shutter is opened.

FIG. 20A is a front view showing the cartridge as seen from the front side when the shutter is closed, and FIG.
FIG. 7 is a front view showing the cartridge when the shutter is opened, as viewed from the front side.

[Explanation of symbols]

 1 Disk Rotation Drive Mechanism 2 Optical Pickup 3 Device Main Body 6 Disk Mounting Section 110 First Lid 111 Key Switch 117, 118 Lid Attachment 121, 122 Rotating Support Plate 132 Second Lid 133 Display 134 134 Liquid Crystal Display Panel 200 Cartridge 201 Optical Disc 202 Cartridge Body 203 Upper Half 204 Lower Half 205 Opening 207 Shutter 207c Shutter Front Plate 301,302 Reinforcing Plate 303 Protrusion

Claims (1)

[Claims] 1. A disk-shaped recording medium is rotatably accommodated,
Further, with respect to the cartridge main body having an opening that exposes at least a part of the disk-shaped recording medium to the outside, a shutter that shields the portion continuous with the opening and the opening in the front surface of the cartridge main body is opened and closed. In a recording and / or reproducing apparatus for a disk-shaped recording medium, a cartridge which is freely provided and configured can be inserted / removed, and which has a cartridge holder provided with shutter opening / closing means for opening / closing the shutter when the cartridge is inserted / removed. When the shutter is opened by the shutter opening / closing means, the cartridge holder can enter the inside of the opening from the front surface of the cartridge toward the rear side of the cartridge when the shutter is opened. Disk-shaped recording medium, characterized in that it is formed with Recording and / or reproducing apparatus for use.