JPH04157662A - Optical disk recording and/or reproducing apparatus - Google Patents

Abstract

PURPOSE:To prevent erroneous insertion of a disk cartridge containing different kinds of disks by providing a disk loading mechanism with an erroneous insertion preventing means for preventing erroneous insertion of a different kind of a disk within the disk cartridge. CONSTITUTION:An erroneous insertion preventing lever 75 is rotatably mounted at an upper plate part 45 of a cartridge holder 35 so as to prevent a disk cartridge from being inserted in an erroneous direction into the cartridge holder 35. Moreover, a cartridge erroneous insertion preventing means 85 is provided at an opening of a second notched part 84 of notched parts 83, 84 in a manner to project inside the notched part 84. The preventing means 85 prevents erroneous insertion of a disk of a different kind within the disk cartridge. Accordingly, the disk cartridge accommodating various kinds of disks can be prevented from erroneously inserted into the cartridge holder.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Industrial field of application B9 Summary of the invention C0 Prior art D1 Problems to be solved by the invention 61 Means for solving the problems F0 Effect G. Example G-1 Description of disk cartridge (Fig. 8 (A) ) and FIG. 8(B)) G-2 Explanation of the configuration of the optical disc recording and/or reproducing device (FIGS. 1 to 4(B)) G-2a Cartridge mounting section, disc rotation drive device, and optical pickup device (Figs. 1 and 2) G-2b Description of the magnetic head device and magnetic head device vertical movement mechanism (Figs. 1 to 3 (B)) G-2c Description of the disk loading mechanism (Fig. 1) , Fig. 2, Fig. 4 (^), Fig. 4 (B)) Explanation of the installation operation of the G-3 disk cartridge (Fig. 5 (A) to Fig. 1O (C)) G-3a disk cartridge Explanation of the state before insertion (Fig. 5 (A) to Fig. 5 (
D)) G-3b Explanation of the state in the middle of inserting the disk cartridge (Fig. 6 (A) to Fig. 6 (G), Fig. 9) G-3c Explanation of the installed state of the disk cartridge (
Fig. 7(A) to Fig. 7(D)) G-4 Description of other embodiments (Fig. 10(A) to Fig. 10(
C)) H0 Effects of the Invention A, Field of Industrial Application The present invention relates to an optical disc recording and/or reproducing apparatus for recording and/or reproducing information signals on an optical disc.

B6 Summary of the Invention The present invention provides an optical disc recording and/or reproducing apparatus for recording and/or reproducing information signals on an optical disc, in which a disc loading mechanism for mounting a disc cartridge in a cartridge mounting portion is provided with By providing a cartridge erroneous insertion prevention means for preventing erroneous insertion of a different type of disc due to a difference in the type of disc, it is possible to prevent a disc cartridge containing a different type of disc that is not compatible with this recording and/or playback device from being inserted. It is something to do.

C1 Prior Art Conventionally, optical discs have been proposed that are configured to allow information signals to be written and read and used as recording media for information signals.

As such an optical disk, there is a so-called magneto-optical disk. A magneto-optical disk has a signal recording layer made of a magnetic thin film capable of perpendicular magnetization.

This signal recording layer is heated to a temperature higher than the Curie temperature by irradiation with a laser beam, and the direction of magnetization is reversed by application of an external magnetic field to write an information signal. In addition, this signal recording layer is irradiated with a linearly polarized light beam such as a laser beam, and the difference in the magnetization direction is detected by detecting the change in the polarization direction due to the Kerr effect that occurs when the light beam is reflected on the surface of the signal recording layer. The information signal is read out.

In order to write and/or read information signals to and from such a magneto-optical disk, a magnetic head device comprising an optical pickup device and a magnetic head for applying an external magnetic field is required. Optical disc recording and/or
Or a playback device is used.

The optical pickup device is configured to irradiate a focused laser beam onto one principal surface of the magneto-optical disk and to detect reflected light of the laser beam from the magneto-optical disk.

On the other hand, the magnetic head device is configured to apply a magnetic field from the other side to the portion of the magneto-optical disk that is irradiated with the laser beam by the optical pickup device.

In this optical disk recording and/or reproducing device, the magneto-optical disk is rotated, and the optical pickup device and the magnetic head are moved radially across the inner and outer circumferences of the magneto-optical disk in synchronization with each other. As a result, information signals are written and/or read over substantially the entire surface of the magneto-optical disk.

D1 Problems to be Solved by the Invention Generally, magneto-optical disks are rotated in a cartridge consisting of a pair of upper and lower halves in order to protect the signal recording surface on which information signals are written from dust and contact with fingers, etc. It is possible to store it. In other words, the magneto-optical disk is rotatably housed in a cartridge consisting of upper and lower halves, and is opened into the cartridge only during recording and playback by a shutter member slidably attached to the cartridge. The signal recording surface is exposed to the outside through the recording/reproducing opening.

Therefore, when recording and reproducing information signals to and from the magneto-optical disk housed in this cartridge using the above-mentioned device, the shutter member is opened and signals are recorded on the magneto-optical disk housed in the cartridge. It is necessary to expose the surface to the outside. A mechanism for opening the shutter member is generally provided in a disc loading mechanism that mounts the cartridge in the cartridge mounting portion of the device, and is, for example, a shutter that is rotatably attached to a cartridge holder that constitutes the disc loading mechanism. It is constructed by raising a release lever and a shutter release pin that engages with the shutter member.

The shutter release lever is mounted rotatably around the proximal end on the life side of the cartridge holder, and is biased by a tension coil spring stretched between the lever and the cartridge holder. . A shutter release pin that engages with the shutter member is installed on the tip side of the shutter release lever, and the tip thereof is an elongated shutter release pin that is bored on the life side of the cartridge holder. The cartridge is suspended into a holder into which the cartridge is inserted through a guide groove. Therefore, when the cartridge is inserted into the cartridge holder, the shutter release pin hanging down within the holder engages with the shutter member, and the insertion of the cartridge causes the shutter release pin to be guided into the shutter release pin guide groove. , the shutter member is slid to finally open the recording/reproducing opening in the cartridge. As a result, the signal recording surface of the magneto-optical disk housed in the cartridge is exposed to the outside through the recording/reproducing opening. In this state, the magnetic head and the optical pickup device face the signal recording surface through the recording and reproducing opening, and recording and reproducing are performed.

However, cartridges that are not compatible with this optical disk recording and/or playback device, that is, they contain a different type of disk that cannot be recorded or played back, such as a 3.5-inch floppy disk or a read-only CD-ROM, are also compatible with the above-mentioned optical disk recording and/or playback device. Since the outer shape of the magnetic disk is approximately the same as that of the cartridge in which the magnetic disk is housed, there is a risk that the magnetic disk may be inserted into the cartridge holder. In this way, if a cartridge containing a different type of disk that is not compatible with this recording and/or playback device is inserted, not only can information signals be written to or read from these disks, but also floppy disks etc. If the cartridge is thin like this, it cannot be inserted or removed, and it may come into contact with magnetic heads, optical pickup devices, etc., and damage these devices.

Therefore, the present invention has been proposed in view of the conventional situation, and is an optical disc that can prevent erroneous insertion of a disc cartridge containing a different type of disc that is not compatible with this recording and/or playback device. The purpose is to provide a recording and/or playback device.

89 Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a cartridge mounting portion into which a disc cartridge containing an optical disc is mounted, a disc rotation drive device for rotating the optical disc, and a disc rotation drive device configured to rotate the optical disc. an optical pickup device that is moved in the radial direction across the inner and outer peripheries of the optical disk and records and/or reproduces information signals on the optical disk; A magnetic head device that is moved radially across the inner and outer peripheries in synchronization with the optical pickup device, and a magnetic head device that moves the magnetic head device toward and away from the signal recording surface of the optical disk in a substantially perpendicular direction. a vertical movement mechanism; a disk loading mechanism for loading the disk cartridge into the cartridge mounting portion and loading the optical disk in the disk cartridge into the disk rotation drive device; A cartridge erroneous insertion prevention means for preventing erroneous insertion of a different type of disk due to a difference in the type of disk in the cartridge; , comprising a magnetic head device holding mechanism that holds the magnetic head device at a predetermined height position relative to the signal recording surface of the optical disk.

F1 action In the optical disc recording and/or reproducing apparatus according to the present invention, a disc cartridge is installed in the cartridge mounting section, and the optical disc in the disc cartridge is rotated by the disc rotation drive device so that the optical discs are faced to each other with the optical disc in between. Recording and/or reproduction is performed on the optical disc by moving a magnetic head device and an optical pickup device synchronously in the radial direction across the inner and outer peripheries of the optical disc.

In this device, the disc loading mechanism that loads the disc cartridge into the cartridge mounting section is provided with cartridge erroneous insertion prevention means to prevent erroneous insertion of a different type of disc due to a difference in the type of disc in the disc cartridge. This prevents a disc cartridge containing a different type of disc that is not compatible with this device from being inserted into the disc loading mechanism.

G. Examples Specific examples of the present invention will be described below with reference to the drawings.

G-1 disk cartridge (see FIGS. 8(A) and 8(B)) Before explaining the specific configuration of the optical disk recording and/or reproducing apparatus according to the present invention, the recording medium used in this apparatus will be explained. A disk cartridge is explained below.

As shown in FIGS. 8(A) and 8(B), this disc cartridge 201 includes a disc-shaped optical disc 202.
and a cartridge 203 that rotatably accommodates the optical disc 202.
has a recording layer on at least one surface, and information signals can be written to, read from, or both written and read from this recording layer by optical or magneto-optical means. . A chucking hub portion 202a is provided at the center of the optical disc 202 for chucking the optical disc 202 by an optical disc recording and/or reproducing device, which will be described later. Note that the optical disk 202 of this example is configured as a magneto-optical disk using a magnetic thin film for the recording layer.

The cartridge 203 consists of a pair of upper and lower halves 204 and 205, each having a rectangular shape and having a size that is large enough to accommodate the optical disc 202 therein.
The upper half 204 and the lower half 205 are butted and connected. The optical disc 202 is rotatably housed in the cartridge 203.

The lower half 205 constituting the cartridge 203 includes a chucking hub portion 202a provided at the center of the optical disc 202, and a part of the signal recording surface of the optical disc 202 housed in the cartridge 203 on the inner and outer peripheries. A first opening 206 is provided for facing outward.

The first opening 206 is located at the center in the left-right direction between one side 207 and the other side 208 of the cartridge 203, and is formed as an elongated hole extending from the front 209 side of the cartridge 203 to the center. . This first opening 2
06, when the disc cartridge 201 is loaded into the recording and/or reproducing device, the optical disc 20
2, and an optical pickup device that irradiates the signal recording surface of the optical disc 202 with a laser beam.

On the other hand, a second opening 210 is formed in the upper half 204 at a position opposite to the first opening 206 provided in the lower half 205.

The second opening 210 is provided at a position closer to the front surface 209 of the cartridge 203, and extends a part of the signal recording surface of the optical disc 202 to the inner and outer peripheries in the radial direction and faces outward. It is formed into a rectangular shape large enough to be used. A magnetic head facing the signal recording surface of the optical disk 202 housed in the cartridge 203 faces the second opening 210 .

It should be noted that a magnetic head and an optical pickup device enter into the portions corresponding to the first opening 206 and the second opening 210 on the front surface 209 side of the cartridge 203 in close opposition to the signal recording surface of the optical disk 202. Notch recesses 206a and 210a are respectively provided to allow the opening to be performed. As a result, the cartridge 203
The thickness on the front surface 209 side is thinner at the portions corresponding to the openings 206 and 210.

Further, a shutter member 211 that closes the first opening 206 and the second opening 210 is slidably attached to the cartridge 203. This glossy member 211 is located at the first opening 2 of the lower/'%-fu 205.
06 and the upper half 2
A second shutter section 213 that closes the second opening 210 of 04, and these first and second shutter sections 212, 2
13 and a connecting piece 214 that connects 13.

As shown in FIG. 8(A), the first shutter portion 212 is formed in a rectangular shape that is narrow and long enough to close the first opening 206 of the lower half 205. has been done. On the tip side of this first shutter section 212,
A hinge pressing portion (not shown) is bent and supported by a shutter pressing plate 215 attached to the outer surface of the lower half 205 to prevent the first shutter portion 212 from lifting off from the cartridge 203. has been done. Further, on one side of the first shutter section 212 connected to the connecting piece 214, there is a first slide guide groove 216 that engages with a first slide guide groove 216 carved on the outer surface of the lower half 205. The engaging piece 217 or the second shutter portion 213
It is bent toward the side.

On the other hand, the second shutter section 213 is formed into a wide rectangular shape that is large enough to close at least the second opening 210, as shown in FIG. 8(B). The second shutter member 213 has the shutter member 211 connected to the first and second openings 206.21.
A rectangular notch hole 218 is provided that opens the second opening 210 when the opening is moved in the direction of opening the opening.

These first and second shutter sections 212.21
The connecting piece 214 connecting the cartridges 203 and 3 is connected to the cartridge 203.
It is formed to have a width approximately equal to the thickness of the front surface 209 side. The connecting piece 214 plays a role in stably sliding the shutter member 211 by slidingly contacting the connecting piece 214 along the front surface 209 of the cartridge 203. The connecting piece 214 has first and second openings 2 provided in the cartridge 203.
When the shutter member 211 is moved so that the openings 206 and 210 are opened, the openings 206 and 210 are opened.
Notch recesses 206a formed in the upper half 204 and the lower half 205 at positions corresponding to 210, respectively;
Notches 214a and 214b are provided to open 210a. Therefore, these notches 214a
, 214b, the narrow portion of the connecting piece 214 is connected to the optical disk 2 of the magnetic head and optical pickup device.
It acts to facilitate close opposing approach to 02. Note that one of these notch recesses 214a and 214b, 214a, is connected to the notch hole 218 of the second shutter section 213.

Further, on one side where the first shutter portion 212 is provided near one edge of the connecting piece 214 in the sliding direction,
A short slide guide portion 219 that extends in the same direction as the first shutter portion 212 is provided. At the tip of this slide guide portion 219, the first slide guide groove 21 is formed on the outer surface of the lower half 205.
The second retaining piece 221 that engages with the second slide guide groove 220 carved parallel to the second shutter part 2
It is bent toward the 13 side. Therefore, the shutter member 211 is regulated in the sliding direction by engaging the first and second engaging pieces 217 and 221 with the first and second slide guide grooves 216 and 220. At the same time, efforts are being made to stop the withdrawal.

Furthermore, the connecting piece 214 has a shutter member 211 disposed inside the cartridge 203 and attached to the cartridge 203, which is connected to the first and second openings 206.
, 210 is provided. A spring locking piece 222 is provided to lock one end of a torsion coil spring (not shown) that constantly moves and biases the springs 210 in the direction of closing them. This spring locking piece 222 is
It is bent inward so as to be substantially parallel to the first and second shutter parts 212 and 213, and a torsion coil spring is secured to the tip end thereof. In addition,
The other end of the torsion coil spring is locked to a corner portion on the front surface 209 side of the cartridge 203. Therefore, the shutter member 211 configured in this way is
Figure 8 (A)
A movement operation is performed in the direction of the center mark C.

The shutter member 211 is attached to the front surface 209 of the cartridge 203 through an opening 2 provided in the cartridge 203 against the biasing force of the helical coil spring.
06.Record of moving operation in the direction of opening 210 and/
Alternatively, a recess 223 for entering a shutter release member is formed into which a shutter release pin of a shutter release lever disposed on the playback device is inserted and engaged. This shutter opening member entry recess 223 is formed at a corner of one side of the cartridge 203 and one side of the connecting plate 214 when the shutter member 211 closes the opening 206.210. Correspondingly provided.

Furthermore, the shutter member 211 is moved by the shutter release bin of the shutter release lever on the front surface 209 of the cartridge 203, and the opening 206 is moved by the shutter release bin of the shutter release lever.
．． A shutter release member fitting portion 224 is formed to maintain the shutter release member 210 in an open state. This shutter opening member fitting portion 224 is connected to the connecting piece 21 of the shutter member 2 when the openings 206 and 210 are opened.
A cutout groove is formed in the portion where one side edge of 4 is located.

Further, the lower half 20 constituting the cartridge 203 is
5, this disk cartridge 201 is recorded and/or
Or a pair of positioning bin retaining holes 225, 2 that engage with positioning bins that determine the horizontal mounting position of the disk cartridge 201 when installed in a playback device.
26 are provided. Furthermore, an erroneous recording prevention member 227 is attached to the lower half 205 at a position close to the one positioning bin retaining hole 226 for selecting whether or not to write an information signal to the optical disc 202.

Furthermore, one side 207 of the cartridge 203
This disk cartridge 2 is located near the front side 209.
A cartridge retracting bin insertion hole 228 is formed into which a disc cartridge retracting bin provided in a loading mechanism of a recording and/or reproducing apparatus is inserted.

G-2 Configuration of optical disc recording and/or playback device (first
(See Figures 1 and 2) Next, an optical disc recording and/or reproducing apparatus that uses the disc cartridge 201 configured as described above as a recording medium will be described.

This optical disc recording and/or reproducing apparatus is configured to include a mechanism and means sufficient to record and/or reproduce information signals onto the optical disc 202, with the disc cartridge 201 mounted therein so as to be housed therein. There is.

That is, this device includes a disk cartridge 201.
A disk loading mechanism 3 that loads the optical disk 202 into a predetermined cartridge mounting portion 1 and loads the optical disk 202 onto the disk table of the disk rotation drive device 2, covering the inner and outer peripheries of the optical disk 202 that is mounted on the disk table and rotated. an optical pickup device 4 that is moved in the radial direction to record and/or reproduce information signals on the optical disc 202, and the optical disc 20;
A mechanism sufficient to record and/or reproduce information signals on the optical disk 202 is provided, such as a magnetic head device 5 that applies an external magnetic field when recording information signals on the optical disk 202.

G-2a Cartridge mounting section, disk rotation drive device, and optical pickup device (see Figures 1 and 2) The cartridge mounting section 1 is equipped with mechanical parts such as the disk rotation drive device 2 and the transport mechanism of the optical pickup device 4. It is configured on a chassis board 6 provided therein. That is, the cartridge mounting section 1 is constructed by forming a space sufficient for mounting the disk cartridge 201 on the upper surface side of the chassis board 6. A disk cartridge positioning pin 7.8 that engages with a positioning pin engagement hole 225, 226 provided in the disk cartridge 201 is installed in the cartridge mounting portion 1. When the disk cartridge 201 is installed in the cartridge mounting section 1, the disk cartridge positioning pin 7.8 is inserted into the positioning pin retaining holes 225, 226.
By engaging with the cartridge, the mounting position is determined with respect to the cartridge mounting portion 1 and the cartridge is mounted. In addition, the above-mentioned disk cartridge 2 is attached to this cartridge mounting portion l.
Height reference bins 7a and 8a are provided for holding the 01 at a predetermined height with respect to the chassis board 6.

Approximately at the center of the chassis board 6 on which the cartridge mounting section 1 is constructed, an optical disc 202 of a disk cartridge 201 mounted in the cartridge mounting section 1 is provided.
A disk rotation drive device 2 is provided to rotate the disk. This disk rotation drive device 2 is arranged such that a drive motor 9 is attached to the lower surface of the chassis substrate 6, and a spindle shaft 1O projects toward the cartridge mounting portion 1 side.

An optical disk 202 is disposed on the tip side of the spindle shaft lO.
A disc table 11 for rotating the disc is integrally attached. This disc table 11 has a function of integrally rotating an optical disc 202. Therefore, in the disk table 11,
A disk adsorption magnet 12 is provided so that the optical disk 202 can be integrated by magnetic adsorption.

Further, an optical pickup device 4 is supported on the chassis substrate 6. This optical pickup device 4 is
Optical disc 2 mounted on the disc table 11
A pair of feeders are mounted in a hole 14 for mounting an optical pickup device, which is formed in the approximate center of the chassis board 6, so that the objective lens 13 that focuses the laser beam on the signal recording surface of It is supported via guide shafts 15,16. The optical pickup device 4 supported in this manner is composed of a pair of optical pickup device drive magnets 17 and 18 and a drive coil 19 disposed in the optical pickup device mounting hole 14 . The feed guide shaft 15 is moved by a so-called Zonia motor or the like.
．． The optical disk 202 is transported in the radial direction along the inner and outer circumferences of the optical disk 202 along the inner and outer circumferences of the optical disk 202 .

G-2b A magnetic head device and a magnetic head device vertical movement mechanism (see FIGS. 1 to 3 [16(B)). The optical pickup device 4 is equipped with a magnetic head device that moves the optical disk 202 into and out of the optical disk 202 in synchronization with the optical pickup device 4. A magnetic head device 5, which is moved radially around the circumference, is connected.

This magnetic head device 5, as shown in FIG. 3(A),
A magnetic head 20 equipped with a magnetic field generating coil or the like that applies a magnetic field of a predetermined intensity to the signal recording surface of the optical disk 202.
have. The magnetic head 20 is provided on a magnetic head moving frame member 21 that is movably attached to a magnetic head lifting/lowering frame member of a magnetic head device vertical movement mechanism to be described later. The magnetic head moving frame member 21 includes a drive unit that moves the magnetic head 20 in the radial direction across the inner and outer peripheries of the optical disk 202, and a drive unit that operates the magnetic head 20 in the radial direction.
A distance sensor (both not shown) is provided to finely adjust and maintain the distance between the optical disc 202 and the optical disc 202 at a constant distance. Further, as shown in FIG. 2, this magnetic head moving frame member 21 includes a pair of connecting members 21a that hang down toward the optical pickup device 4 side.
, 21b are provided, and one end of these connecting members 21a, 21b is connected to the optical pickup device 4. Therefore, the magnetic head device 5 is always moved radially across the inner and outer peripheries of the optical disk 202 in synchronization with the optical pickup device 4.

The magnetic head device 5 configured as described above moves the optical disk 202 by the magnetic head device vertical movement mechanism 22.
It is designed to be operated toward and away from the signal recording surface in a substantially perpendicular direction. The magnetic head device vertical movement mechanism 22 includes a magnetic head elevating frame member 23 that supports a magnetic head moving frame member 21 on which the magnetic head 20 is provided, and a magnetic head elevating frame member 23 that supports an optical disk 202. It consists of a vertically moving lever 24, a frame member for raising and lowering the magnetic head, which is operated toward and away from the signal recording surface in a direction substantially perpendicular to the signal recording surface.

The magnetic head elevating frame member 23 includes a pair of elevating shafts 25 that are installed on the chassis substrate 6 on the opposite side of the disk rotation drive device 2 with the optical pickup device 4 in between.
．． 26 so as to be movable up and down, and supported so as to be movable in the direction toward and away from the chassis board 6, as indicated by the center mark in FIG. 3(A). On the side of the magnetic head elevating frame member 23 facing the optical pickup device 4, a pair of support shafts 27. 2
8 is installed. These support shafts 27.28
3, the frame member 21 for moving the magnetic head is shown in FIG.
) It is attached so as to be movable along the axial direction of each of the support shafts 27 and 28 indicated by the center mark E, that is, along the radial direction of the optical disc 202. Further, a portion of the magnetic head elevating frame member 23 near the one elevating shaft 26 is slidably engaged with a magnetic head elevating frame member vertical movement lever 24 that moves the magnetic head elevating frame member 23 up and down. An engaging bin 29 for lifting and lowering is provided. The elevating engagement bin 29 is formed by bending a metal plate that hangs down from one side of the magnetic head elevating frame member 23. The elevating engaging bin 29 is attached to the tip side of the member 30. ing.

The vertical movement lever 24 of the frame member for vertical movement of the magnetic head, which is slidably engaged with the engagement pin 29 for vertical movement to enable the vertical movement of the frame member 23 for vertical movement of the magnetic head, is connected to the engagement pin 29 for vertical movement. It is mounted on the chassis board 6 at a corresponding position so as to be rotatable about a support shaft 31 in the direction of the center mark F in FIG. 3(A).

The vertical movement lever 24 of the frame member for elevating the magnetic head includes a fan-shaped sliding contact portion 32 that slides on the chassis substrate 6, and a vertical movement guide portion 33 that is formed rising from the sliding contact portion 32.
It consists of The sliding contact portion 32 has this sliding contact portion 3
A minute protrusion 32a is provided for making point contact with the chassis substrate 6 to facilitate sliding contact.

Furthermore, a lever operating pin 34 is installed in the sliding contact portion 32 to be fitted into a vertically moving lever operating member of a frame member for elevating and lowering the magnetic head provided on the eject plate of the disk loading mechanism 3, which will be described later. Note that this lever operation pin 34 is planted on one end side of the outer peripheral edge where the vertical movement guide section 33 is provided.

On the other hand, the vertical movement guide part 33 is configured such that the upper end of the rising wall is slidably engaged with the lifting engaging pin 29, and includes a parallel part 33a parallel to the chassis board 6, and a parallel part 33a parallel to the chassis board 6. and a sloped portion 33b that slopes from the side toward the lever operation bin 34 side. That is, in the state in which the lifting engagement pin 29 is engaged with the parallel portion 33a, that is, in the ejected state, as shown in FIG. 3(A),
The magnetic head elevating frame member 23 is oriented in a direction away from the optical disk 2.degree. 2, and is held at a position where the magnetic head 20 does not come into contact with the optical disk 201 when the disk cartridge 201 is inserted.

On the other hand, in the state where the lifting engagement bin 29 is engaged with the lower end side of the inclined portion 33b, that is, in the loading state,
As shown in FIG. 3(B), the magnetic head elevating frame member 23 is in a direction approaching the optical disk 202, and information signals are not written on the signal recording surface of the magnetic head 20 or the optical disk 202. be held at the desired height.

Therefore, the magnetic head device 5 is attached to the frame member 23 for lifting and lowering the magnetic head so as to be transportable, and is moved in the radial direction over the inner and outer peripheries of the optical disk 202, and the frame member for lifting and lowering the magnetic head is moved up and down. By rotating the lever 24, the lifting engaging pin 29 provided on the magnetic head lifting frame member 23 moves between the parallel part 33a and the inclined part 33b.
By slidingly engaging with the optical disc 2
It is operated toward and away from the signal recording surface of 02 in a substantially perpendicular direction.

Further, a portion of the magnetic head elevating frame member 23 near the other elevating shaft 25 is provided with the magnetic head device 5 when the magnetic head device 5 is moved to a recording position close to the optical disk 202. A retaining surface 23a is provided that engages with a magnetic head device holding mechanism, which will be described later, that holds the optical disk 202 at a predetermined height relative to the signal recording surface.

The engaging surface 23a is an inclined surface that is inclined toward the chassis substrate 6 on the side opposite to the side on which the magnetic head device 5 is provided.

G-2c Disc loading mechanism (Fig. 1, 2
4(A) to 5(D))) A disk cartridge 20 is placed in the cartridge mounting portion 1.
Disk coding mechanism 3 for loading operation 1
As shown in FIGS. 1 and 2, there is a cartridge holder 3 into which the aforementioned disc cartridge 201 to be installed in the optical disc recording and/or reproducing apparatus is inserted and held.
5, a cartridge holder support plate 36 that supports this cartridge holder 35, and the cartridge holder 35
The eject plate 37 is configured to move the disc cartridge 201 up and down relative to the cartridge mounting portion 1 and to move the disk cartridge 201 to an eject position where it is ejected, and an eject plate slide drive mechanism 38 that slides the eject plate 37. ing.

The cartridge holder 35 is shown in FIG.
As shown in Figure (B), the disk cartridge 20
The disk cartridge 20 is formed into a substantially flat plate shape large enough to insert and hold the disk cartridge 20.
1 and a cartridge holding portion 3 having a substantially U-shaped cross section.
9.40 is formed. A pair of vertical movement guide bins 41.42 are provided on the outer surface of each of these cartridge holding parts 39.40 on a part of the outer surface or on a bulge extending outward.
and 43.44 are provided protrudingly. The vertical movement guide bins 41, 42, 43, and 44 are inserted into vertical movement guide grooves provided in a cartridge holder support plate 36 and an eject plate 37, which will be described later.

The upper plate portion 45 of the cartridge holder 35 has a recess 223 for entering the shutter release member of the disk cartridge 201 inserted into the cartridge holder 35.
a shutter release lever 4 provided with a shutter release bin 46 that is inserted into and engaged with the shutter member 211 to open the shutter member 211;
7 is rotatably attached. The shutter release lever 47 is formed in a planar shape, and is rotatably supported by a first support shaft 4B at the approximate center of the upper surface 45a of the upper plate portion 45, with its base end serving as a fulcrum. ing.

A shutter release bin 46 for opening the shutter member 211 is installed on the tip side of the shutter release lever 47. This shutter release bin 46 is connected to the upper plate portion 4.
5, the cartridge holder 35 is inserted into the cartridge holder 35 through a shutter release pin guide groove 49 formed along a movement locus centered on the first support shaft 48 of the shutter release bin 46.
It hangs inward. Note that this shutter release pin guide groove 49 is provided in order to facilitate the transport operation of the shutter release bin 46.
The groove width is slightly larger than the outer diameter of the groove. The shutter release bin 46 is provided with a shutter release bin escape prevention member 5, which is a shutter release bin escape prevention means for preventing the shutter release bin from running onto the shutter member 211.
0 is set. The shutter release bottle escape prevention member 50 is formed as a so-called washer having an annular shape large enough to straddle the shutter release pin guide groove 49, and is provided by being inserted into the shutter release pin 46. It is provided in contact with the bottom surface 45b of the plate portion 45. As a result, the shutter release pin 46 is positionally regulated with respect to the shutter release pin guide groove 49 by the shutter release bottle escape prevention member 50, and can move within the shutter release pin guide groove 49 without rattling. This prevents the groove from escaping in a direction perpendicular to the direction in which the groove is formed. As a result, the shutter release bin 46
is surely inserted into and engaged with the shutter opening member entry recess 223, and opens the shutter member 211 without riding on the shutter member 211.

The shutter release lever 47, which is rotatably mounted in this manner, moves the shutter release bin 46, indicated by arrow G in FIG. It is made to be biased in the direction. That is, the first
One end of the tension coil spring 51 is locked to a first spring locking piece 52 formed by cutting and raising the shutter release lever 47, and the other end is locked to a third support provided on the retracting member operating lever, which will be described later. By being locked to the shaft, the shutter release pin 46 is positioned at the starting end position of the shutter release pin guide groove 49, that is, at the initial position.

Further, the upper plate portion 4 of the cartridge holder 35
5 is provided with a disk cartridge retraction mechanism 53 for forcibly pulling the disk cartridge 201 into the loading position when the disk cartridge 201 is inserted into the cartridge holder 35. This disk cartridge retraction mechanism 53 includes a cartridge retraction member 5 provided with a cartridge retraction bin 54 that is inserted into and engaged with a cartridge retraction bin insertion hole 228 provided in the disk cartridge 201.
5, a cartridge retraction lever 56 that rotatably supports the cartridge retraction member 55, and a cartridge retraction operation lever 57 that moves the cartridge retraction lever 56 forward and backward.

The cartridge retracting member 55 is formed to have a substantially U-shaped cross section, and is provided with an extending portion 55a having a substantially U-shaped cross section and extending toward the insertion/ejection opening of the disk cartridge 201 at its lower end. The distal end of the extending portion 55a is bent toward the outer side of the cartridge holding portion 40 of the cartridge holder 35. The cartridge retraction bin 54 is installed at the tip of the extending portion 55a. The cartridge retracting member 55 formed in this manner is rotatably attached to the distal end side of the cartridge retracting lever 56 via a second support shaft 58. Furthermore, this cartridge retraction lever 56 is operated by a first torsion coil spring 59 attached to the second support shaft 58 to move the cartridge retraction bin 54 toward the cartridge holder 35, which is indicated by arrow H in FIG. The holding portion 40 is biased toward the outer surface side. That is, the first torsion coil spring 59 has one end connected to the cartridge retracting member 5.
The cartridge retraction bin 54 is locked by the second spring locking piece 60 formed by cutting and bending the cartridge retracting lever 56 and the other end thereof is locked by the third spring locking piece provided on the cartridge retracting lever 56. is urged toward the outer surface of the cartridge holding portion 40 of the cartridge holder 35.

The cartridge retracting lever 56, which rotatably supports the cartridge retracting member 55, engages with a pair of guide shafts 61 and 62 pivotally supported on the upper surface 45a side of the upper plate portion 45 of the cartridge holder 35. , Figure 4 (A
) The disk cartridge 201 is moved forward and backward from the insertion/ejection opening of the disk cartridge 201 shown in the central portion I to the opposite direction. The guide shafts 61 and 62 are supported on a protrusion that partially projects toward the upper surface 45a of the upper plate portion 45. That is, elongated advance/retreat operation guide grooves 63, 64 are provided at positions corresponding to the guide shafts 61, 62 of the cartridge retracting member 55, respectively.
are provided, and the guide shafts 61, 62 are engaged with the advancing/retracting operation guide grooves 63, 64, so that the cartridge retraction lever 56 is operated to advance or retreat. Also,
Near the tip of the cartridge retracting member 55 of the cartridge retracting lever 56 is a first torsion coil spring 5 provided on the cartridge retracting member 55.
A third spring locking piece 65 with which the other end of the cartridge 9 engages is cut and raised, and the cartridge retracting member 55
A hole 66 is drilled to support the second support shaft 58 . Furthermore, the cartridge retraction lever 5
A retaining hole 6 is provided on the other end side of the cartridge retraction lever 56 and is engaged with a retraction operation engagement pin provided on the cartridge retraction operation lever 57 for advancing and retracting the cartridge retraction lever 56.
7 is provided.

The cartridge retraction operation lever 57 has a substantially crescent-shaped planar shape, and is rotatable toward the upper surface 45a of the upper plate portion 45 of the cartridge holder 35 by a third support shaft 68 about its approximately central portion as a fulcrum. Supported. The cartridge retraction operating lever 57 is provided on the side of the insertion/ejection opening of the disk cartridge 201, which is close to the shutter release lever 47. and,
On one end side of this cartridge retraction operation lever 57,
The forward/backward operation engagement pin 69 that engages with the engagement hole 67 of the cartridge retraction lever 56 is planted, and the second
A fourth spring locking piece 71 to which the tension fill spring 70 is locked is cut and raised. On the other hand, on the other end side of the cartridge retraction operation lever 57, a rotation operation engagement piece 72 is protruded which engages with an eject plate 37, which will be described later, and allows the cartridge retraction operation lever 57 to be rotated by the ejection plate 37. It is set up.

The cartridge retraction operation lever 57, which is rotatably mounted in this manner, is operated by the second tension coil spring 70 to move the disk cartridge 2 as shown by the arrow J in FIG.
01 is biased in the direction of movement toward the insertion side. That is, the second tension coil spring 7
0 has one end connected to the cartridge retraction operation lever 57.
and a fifth spring locking piece 73 whose other end is cut and raised on the upper surface 45a side of the upper plate portion 45 of the cartridge holder 35. As a result, the rotational operation securing piece 72 is located on the insertion/ejection opening side of the disk cartridge 201. At the same time,
The cartridge retraction lever 56 connected to the cartridge retraction operation lever 57 is connected to the disk cartridge 2.
01, and positions the cartridge retraction bin 54 of the cartridge retraction member 55 at the loading position. Note that the upper plate portion 45 of the cartridge holder 35 is rotated by the rotationally operating engagement piece 72.
A fall prevention portion 74 is formed in the region to protrude toward the upper surface 45a to prevent the rotational operation engagement piece 72 from falling down during the rotational operation.

Further, the upper plate portion 45 of the cartridge holder 35 includes:
An incorrect insertion prevention lever 75 is rotatably attached to prevent the disk cartridge 201 from being inserted into the cartridge holder 35 in the wrong direction. The erroneous insertion prevention lever 75 is supported by a fourth support shaft 76 around the proximal end near one side edge of one of the cartridge holding parts 40 of the cartridge holder 35, and is attached to an upper plate portion of the cartridge holder 35. 45 is rotatable on the upper surface 45a. An erroneous insertion prevention bottle 77 is installed on the tip side of the erroneous insertion prevention lever 75. The erroneous insertion prevention bottle 77 is suspended into the cartridge holder 35 through a notch 78 that is open on one side of the cartridge holder 35 .

The incorrect insertion prevention lever 75 configured as described above is biased by a third tension coil spring 79 in a direction to move it inward of the cartridge holder 35 as indicated by an arrow in FIG.

That is, one end of the third tension coil spring 79 is locked to a sixth spring locking piece 80 formed by cutting and raising the incorrect insertion prevention lever 75, and the other end is locked to the upper plate of the cartridge holder 35. The erroneous insertion prevention bin 77 is positioned inside the cartridge holder 35 by being locked by a seventh spring locking piece 81 formed by cutting and raising the portion 45 . Note that this third tension coil spring 7
9, the erroneous insertion prevention lever 75 comes into contact with a positioning protrusion 82 protruding from the opening periphery of the notch 78 of the cartridge holder 35, and the erroneous insertion prevention lever 75 is pressed against the erroneous insertion prevention lever 75. 77 is located at the initial position.

Further, the upper plate portion 45 of the cartridge holder 35 includes:
A first notch 83 faces an eject plate holding lever that holds an eject plate 37 in an eject position, which will be described later, and a second notch 84 faces the magnetic head device 5. And these notches 83, 84
A cartridge protruding into the opening side of the second notch 84 prevents incorrect insertion of a different type of disc due to a difference in the type of disc in the disc cartridge 201. Insertion prevention means 8
5 is provided.

The cartridge erroneous insertion prevention means 85 is such that a part of the upper plate part 45 of the cartridge holder 35 protrudes into the second notch part 84 from the opening peripheral edge on one side of the second notch part 84. The first tongue piece 8 formed by
6, and a second tongue piece 87 extending from the one cartridge holding part 39 to the second notch part 84 so as to face the first tongue piece 86. There is. The tips 86a, 87a of the first and second tongues 86, 87 are bent to face each other. Moreover, these first and second tongue pieces 86, 8
The tips 86a and 87a of the disc cartridge 201 face each other with a gap 1 slightly wider than the thickness t of the thin part of the cartridge 203 formed by the notch recesses 206a and 210a formed in the upper and lower halves 204 and 205 of the disk cartridge 201, respectively. ing. Therefore, only the disk cartridge 201 described above that can pass through the first and second tongue pieces 86, 87M is attached to the cartridge holder 35.
The disk cartridge 229 shown in FIG. 9, which has a cutout recess 206a only in the lower half 205, or the disk cartridge (not shown) that does not have cutout recesses on the upper and lower sides, can be held in this cartridge. It is not held in the holder 35. In other words, when a disk cartridge 229 that stores a different type of disk that is not compatible with this optical disk recording and/or playback device, for example, a disk cartridge 229 that stores a read-only CD-ROM or the like, is inserted into this cartridge holder 35, the disc cartridge 229 is disconnected. The first tongue piece 86 comes into contact with the connecting piece 214 of the shutter member 211, which is not provided with a notch, to prevent incorrect insertion of the disk cartridge 229.

Furthermore, when a disk cartridge that is not provided with cutout recesses on the top and bottom, for example, a disk cartridge that accommodates a 3.5-inch floppy disk, is inserted into the cartridge holder, the connecting piece 214 of the shutter member 211 is connected to the first and The second tongue pieces 86 and 87 abut against each other to prevent incorrect insertion of the disc cartridge.

Note that it is also possible to use a bottle instead of the first and second tongue pieces 86, 87, and furthermore, a bottle can be provided in the cartridge holder 35 in place of the first tongue piece 86, and the second tongue piece 86. A bottle may be provided on the chassis board 6 side instead of the tongue piece. Of course, these bottles
It goes without saying that it is necessary to provide the shutter member 211 so that it faces at least when it is in the open position shown in FIG. 6(E).

Further, the upper plate portion 45 of the cartridge holder 35 includes:
When the cartridge holder 35 is supported by the cartridge holder support plate 36, the various shutter release levers 47, cartridge retraction operation lever 57, incorrect insertion prevention lever 75, etc. provided on the upper plate portion 45 support the cartridge holder. A bulge 88 is formed to prevent contact with the plate 3G. This bulging portion 88 is located at the upper plate portion 4 of the cartridge holder support plate 36.
5 is formed on one side near the insertion/ejection opening of the disk cartridge 201 as a protrusion extending in a direction perpendicular to the insertion direction of the disk cartridge 201 as a projection having at least the plate thickness of the various levers.

Furthermore, a shutter release bin escape prevention member 50 provided on the shutter release bin 46 is attached to the bottom surface 45b of the upper plate 45 of the cartridge holder 35 by pushing down the disk cartridge 201 inserted into the cartridge holder 35. A cartridge pushing down member 89 is formed to protrude to prevent the cartridge from riding on the cartridge. The cartridge push-down member 89 is provided in the vicinity of the shutter release bin 46 in the initial position, and is formed as a protrusion that is at least thicker than the thickness of the shutter release bin escape prevention member 50.
It is possible to reliably prevent the bottle from running onto the shutter open bottle escape prevention member 50.

Further, the upper plate portion 4 of the cartridge holder 35
5 is provided with cartridge insertion position regulating members 90 and 91 for regulating the position of the inserted disc cartridge 201 so that it is not inserted further inward than the loading position. The insertion position regulating member 90.91 is
They are provided in the vicinity of the open end edge of the second notch 84 along one inward edge of the upper plate portion 45 so as to hang down inward of the cartridge holder 35 .

Further, on the outer surface of one of the cartridge holding parts 40 of the cartridge holder 35, a cartridge retracting bin position regulating tongue piece 92 is provided outwardly to hold the cartridge retracting bin 54 in the initial state when in the eject state. It is formed by being bent. This cartridge retraction bin position regulating tongue piece 92 maintains a state in which the cartridge retraction bin 54 escapes outward so that it does not come into contact with the disc cartridge 201 when inserted into the cartridge holder 35 in the ejected state. It looks like this.

The cartridge holder 35 configured in this way
As shown in FIG. 2, the cartridge holder support plate 36 that supports the cartridge holder 36 is formed into a substantially flat plate shape that is large enough to hold the cartridge holder 35 inside. Cartridge holder support walls 93 and 94 are provided that support the cartridge holder so as to be movable up and down.

These cartridge holder support walls 93 and 94 have vertical movement guide grooves 95 and 97 into which the vertical movement guide pins 41, 42, and 43 and 44 provided on the cartridge holder 35 are inserted and engaged, or in which they are slidably engaged. 96.98 is provided. These vertical movement guide grooves 95, 96, 97.
Of the vertical movement guide grooves 95 and 97 provided on the insertion/ejection opening side of the disk cartridge 201, the vertical movement guide grooves 95 and 97 are parallel to the spindle shaft 10 of the disk rotation drive device 2 as a radius sufficient to insert the vertical movement guide bins 41 and 43. It is cut out as a slit groove. On the other hand, one of the vertical movement guide grooves 96, 98 is formed as a wide groove, and is also cut out parallel to the spindle shaft 10 of the disk rotation drive device 2.

Note that this wide vertical movement guide groove 96°98
, the inner vertical movement guide bins 42, 44 or the rear side edges 96a, 98 of the vertical movement guide grooves 96,98.
It is adapted to slide into contact with and engage with a. That is, the vertical movement guide bins 41.43 on the insertion/ejection port side of the disk cartridge 201 are connected to the vertical movement guide grooves 95.43 facing the vertical movement guide bins 41.43.
97 and is inserted into and engaged with the inner vertical movement guide pin 42.4.
4 is one side edge 96a of the other vertical movement guide groove 96.98
.

98a for sliding engagement.

Then, the vertical movement guide groove 95. 96.97°98
At both lower end edges of the cartridge holder support walls 93 and 94 provided with the cartridge holder support plates 36
The mounting for fixing to the chassis board 6 is the part 99,
100, 101, and 102 are provided to extend inward.

That is, the cartridge holder support plate 36 is fixed to the chassis board 6 by screwing the mounting parts 99, 100, 101, and 102 to the chassis board 6. Further, an eject plate holding lever 103 is rotatably attached to the cartridge holder support plate 36 for holding an eject plate 37, which will be described later, at an eject position against the biasing force of a tension coil spring. This eject plate holding lever 1
03 is rotatable by being supported by a fifth support shaft 104 about the base end side. An engaging pawl 103a is provided on the distal end side of the eject plate holding lever 103 to engage with an eject plate locking member provided on the eject plate 37 to hold the eject plate 37 in the eject position. And this engaging claw 1
An eject plate holding lever rotating pin 105 for rotating the eject plate holding lever 103 is installed at the base end where the eject plate holding lever 103 is provided. This eject plate holding lever rotating bin 105 is attached to the cartridge holder 35.
The cartridge holder 35 is suspended into the cartridge holder 35 through a notch 83 that is open on one side. The tip of the eject plate holding lever rotating pin 105 is adapted to hang down at least to a position where it comes into contact with the disk cartridge 201 inserted into the cartridge holder 35.

The eject plate holding lever 103 configured in this manner is moved to the second position by the second torsion coil spring 106.
It is biased in the direction indicated by the arrow in the figure. That is, the second torsion coil spring 106 has one end locked to the base end of the eject plate holding lever rotating pin 105, and the other end formed by cutting and raising the cartridge holder support plate 36. By being locked by the eighth spring locking piece 107, the eject plate holding lever rotating pin 105
is located in the direction indicated by the arrow in FIG. At this time, when the engagement between the locking pawl 103a and the eject plate locking member is released, the eject plate holding lever 103 has a lever rotation prevention piece cut and raised on the eject plate holding lever 103. 103b is locked to the cartridge holder support plate 36 to restrict its rotation.

The cartridge holder support plate 36 has a third notch 1 where the cartridge retraction lever 56 faces.
08, a fourth notch 109 facing the magnetic head device 5, and eject plate sliding bins 113, 114, 115, 116 for sliding an eject plate 37 (described later) in the insertion/removal direction of the disk cartridge 201.
is provided.

The eject plate 37 is slidably attached to the cartridge holder support plate 36 configured as described above. The eject plate 37 includes a flat plate-shaped slide portion 117 that slides in sliding contact with the cartridge holder support plate 36, and risers provided on opposite sides of the slide portion 117 to hang down toward the disk rotation drive device 2 side. It has walls 118 and 119. This slide portion 117 is provided with slide grooves 120, 121, 122, and 123 into which the eject plate slide bins 113, 114, 115, and 116 provided on the cartridge holder support plate 36 are inserted and secured, respectively. These slide grooves 120, 121, 12
2.123 is the eject plate slide bin 213
, 114°, 115.116, respectively.
It is formed as an elongated hole in the insertion/removal direction of the disk cartridge 201.

The slide portion 117 also includes an eject plate holding lever 1 provided on the cartridge holder support plate 36.
03 is provided. This eject plate locking member 124 is formed as a cylindrical body large enough to be latched to the engaging claw 103a of the eject plate holding lever 103, and is inserted through a hole provided in the center of the cylindrical body. It is rotatably attached to the slide portion 117 with a screw 125.

Further, the slide portion 117 includes a fifth notch portion 126 facing the cartridge retraction lever 56, a sixth notch portion 127 facing the magnetic head device 5, and a cartridge provided in the cartridge holder 35. A seventh notch portion 128 is provided from which the rotational operation engagement piece 72 of the retraction operation lever 57 faces. Of these notches 126, 127, 128, one side edge 127a of the sixth notch 127 on the inner side into which the disk cartridge 201 is inserted has this notch 1.
27 to hold the magnetic head device 5 at a predetermined height relative to the signal recording surface of the optical disk 202 when the magnetic head device 5 is provided at a recording position close to the optical disk 202. A magnetic head device holding mechanism 110 is provided. The magnetic head device holding mechanism 110 is composed of an elastically displaceable plate spring 111 whose distal end is bent into a substantially U-shape, and the top of the distal end of the substantially U-shape is connected to the frame member for lifting and lowering the magnetic head. The magnetic head device 5 is slidably engaged with the engaging surface 23a provided on the magnetic head device 5.
When the magnetic head is moved to a recording position close to the optical disk 202, the frame member 23 for raising and lowering the magnetic head is pressed and held. The leaf spring 111 is fixed to the eject plate 37 by screws 112 at its base end.

Further, one side edge 128a of the seventh notch 128 on the side of the insertion/ejection opening of the disk cartridge 201 is configured to rotate so as to project into the notch 128 when the eject plate 37 slides to the eject position. Operation locking piece 7
2, the cartridge retraction operation lever 57
It is designed to be rotated.

An eject plate slide bin of an eject plate slide drive mechanism 38 that slides the eject plate 37 to the eject position is inserted into the rear side of the seventh notch 128 into which the disk cartridge 201 is inserted. An operation section 129 is provided to perform the operations. The operating section 129 is formed as a flat plate having a substantially square planar shape, and is provided on one side edge of the rear side of the slide section 117. The operating portion 129 is formed with a generally circular pin sliding hole 129a into which the eject plate slide bin is inserted and engaged.

Eject plate slide mechanism 38 provided with an eject plate slide bin that is inserted into and engaged with the bin sliding hole 129a.
As shown in FIG. 2, there is an eject motor (not shown) provided below the chassis board 6, and an eject plate operating gear provided with an eject plate slide pin 130 that is rotationally driven by this motor. 131. The eject motor and the eject plate operating gear 130 are connected by a plurality of connecting gear mechanisms 132 of different sizes. The eject plate slide pin 130 is installed at an eccentric position of the eject plate operation gear 131. This eject plate slide mechanism 38 is operated when an eject operation button (not shown) is operated to drive the eject motor and rotationally drive the eject operation gear 131 when the disk cartridge 201 is mounted in the cartridge mounting portion l. Then, the eject plate slide bin 130 slides into engagement with the opening periphery of the bin sliding hole 129a of the eject plate 37 and slides the eject plate 37, so that the eject plate 37 is stretched over the cartridge retraction operation lever 57. The eject plate 37 is slid to the eject position by sliding the eject plate 37 against the biasing force of the tension coil spring 70, the eject plate 37, and the support board 6, which will be described later.

The eject plate slide bin 130 is rotated to a position where it does not slide into the bin sliding hole 129a when the eject plate 37 is not in the eject position.

Furthermore, on one side edge of the sliding portion 117 on the insertion/ejection opening side of the disk car 1 to the carriage 20+, there is a raised portion 33 which is bent upward.
An overhanging portion 134 is provided at the rear of 3.

The upright walls 118 and 119 provided on opposite sides of the slide section 117 have an eject position where the cartridge holder 35 is moved up and down relative to the cartridge mounting section 1 and the disk cartridge 201 is ejected. Vertical slide grooves 135°, 136 and 137, 138 are provided for movement operations. These vertical movement slides 1it135.
136, 137, 138 are disk cartridges 2
Horizontal parts 135a, 136a, 137a, 138a parallel to the insertion/removal direction of 01, and this horizontal part +35a.

1st slope portions 135b, 1 that slope gently downward toward the rear side from 136a, 137a, and 138a;
36b, 137b, 138b, and a second sloped portion +35c, 13 that slopes rapidly downward toward the rear side.
6c, +37c, and 138c. The cartridge holder 35, which is supported by the Noyashi board 6 by inserting the vertical movement guide bins 41, 42 and 43, 44 into the vertical movement slide grooves 35, 136 and 137 degrees 138 formed in this way, Slide groove 13
Vertical movement guide bins 41 at 5, 136 and 137, 138
, 42, 43, and 44, the eject position is operated to move up and down in the axial direction of the spindle shaft 10 of the disk rotation drive device 2, that is, with respect to the cartridge mounting portion 1, and to eject the disk cartridge 201. is operated to move.

In addition, the eject plate 3 is located near the vertical slide groove 136.1.38 on the inner side of the rising wall 118.119 into which the disk cartridge 201 is inserted.
A fourth tension coil spring 139 is attached to each of the four tension coil springs 139 for constantly biasing the disk cartridges 7 toward the insertion/ejection opening side of the disk cartridge 201. Note that in this example, one tension coil spring is omitted. Each of these tension coil springs 1
39 has one end latched to the rising wall 118, 119,
Spring locking pin 140 with the other end planted on the chassis board 6
, 141, the eject plate 3
7 is always urged toward the insertion/ejection opening side of the disk cartridge 201.

Further, on the inner side of the one rising wall 118 into which the disk cartridge 201 is inserted, there is a lever operation bin for the vertical movement lever 24 of the frame member for lifting and lowering the magnetic head, which is rotatably supported by the Noyashi board 6. A magnetic head elevating frame member vertically moving lever operating member 142 is fitted into the magnetic head elevating frame member vertically moving lever 24 and rotates the magnetic head elevating frame member vertically moving lever 24 . This magnetic head lifting frame member vertical movement lever operating member 142 is moved from one side edge on the lower end side of one rising wall 118 to the other rising wall 11.
It is provided to extend parallel to the slide portion 117 toward the 9 side. A lever operating bin guide groove 142a into which the lever operating bin 34 is fitted and engaged is formed as an elongated groove near the tip of the vertically moving lever operating member 142 of the frame member for raising and lowering the magnetic head. The lever operating bin 34 is fitted into and engaged with the lever operating bin guide groove 142a of the vertically moving lever operating member 142 of the magnetic head elevating frame member 142 formed in this way, and the eject plate 3
7 rotates the vertical movement lever 24 of the frame member for lifting and lowering the magnetic head, and the frame member 23 for lifting and lowering the magnetic head is operated toward and away from the signal recording surface of the optical disk 202 in a direction substantially perpendicular to the signal recording surface of the optical disk 202. Ru.

G-3 disk cartridge installation operation (Figure 5 (A)
(See FIG. 10(C)) The operating state in which the disk cartridge 201 described above is attached to the optical disk recording and/or reproducing apparatus configured as described above will be described.

G-3a State before inserting the disk cartridge (FIGS. 5(A) to 5(D)) First, the state before inserting the disk cartridge 201 will be described.

To install the disk cartridge 201, operate the eject button (not shown) and press the button shown in FIG. 5(A) and FIG.
), move the eject plate 37 to the eject position, and remove the cartridge holder 35 and magnetic head 20.
The magnetic l\foot lowering frame member 23 provided thereon is moved from the disk table 11 of the disk rotation drive device 2 to the raised position relative to Ill.

That is, by operating the eject button, the eject plate slide mechanism 38 is driven, and the eject plate slide mechanism 38 is slidably engaged with the eject plate slide bin 130 or the operating portion 129 provided on the eject plate 37, and the above-mentioned The eject plate 37 or the disk cartridge 201 resists the biasing force of the fourth tension coil spring 139 stretched across the eject plate 37 and the chassis board 6 and the tension coil spring 70 stretched across the cartridge retraction operation lever 57. is slid to the insertion side. Then, the eject plate holding lever 103 of the cartridge holder support plate 36 engages with the eject plate engaging member 124 provided on the eject plate 37, and the eject plate 37 is held in the eject position.

In addition, with the sliding operation of the eject plate 37,
The rotary operation engagement piece 72 of the cartridge retraction operation lever 57 that projects into the seventh notch 128 of the eject plate 37 is pulled toward the insertion side of the disk cartridge 201 . The cartridge retraction lever 56 connected to the cartridge retraction operation lever 57 is slid to the insertion/ejection opening side of the disk cartridge 201, and a cartridge retraction member is rotatably supported on the tip side of the cartridge retraction lever 56. The cartridge retraction pin 54 of No. 55 is brought into abutment engagement with the cartridge retraction pin position regulating tongue piece 92 of the cartridge holder 35, and is placed in a position away from the disc cartridge 201 inserted into the cartridge holder 35. Hold.

Note that the Nyatta release bin 46 is connected to the Nyatta release lever 4.
7 and a bar 57 for cartridge retraction operation. On the other hand, the incorrect insertion prevention pin 77 is also
A third tension coil spring 79 stretched across the incorrect insertion prevention lever 75 and the cartridge holder 35 allows
It is provided at an initial position hanging inside the cartridge holder 35.

Further, as the eject plate 37 is slid, the magnetic head elevating frame member vertical lever operation member 142 provided on the eject plate 37 engages with the magnetic head elevating frame member vertical lever 24. The vertical movement lever 24 of the frame member for lifting and lowering the magnetic head is rotated, and the frame member 23 for lifting and lowering the magnetic head is moved as shown in FIGS. 5(C) and 5(D).
Disk table 11 of disk rotation drive device 2 shown in
The robot is moved to a raised position away from the vehicle. At this time, in the loading state, the magnetic head elevating frame member 23 is moved by the retaining surface 2 provided on the magnetic head elevating frame member 23 by the leaf spring 111 provided on the eject plate 37.
The magnetic head elevating frame member 23 is held in the recording position by pressing and urging the magnetic head elevating frame member 3a, but as the eject plate 37 slides rearward, these engagements are released and the magnetic head elevating frame member 23 is held in the recording position. The member 23 is raised against only its own weight. Therefore, the extender plate slide mechanism 38 that raises this magnetic head elevating frame member 23
The load on the motor is small, and a motor with relatively low output can be used.

When the magnetic head elevating frame member 23 is raised to the elevated position, that is, the eject position, the vertical movement guide portion 3 of the magnetic head elevating frame member vertical movement lever 24
The magnetic head lifting frame member 23 is mounted on the parallel portion 33b of No. 3.
An elevating engaging pin 29 provided in the magnetic head 20 is engaged, and the magnetic head 20 is held in a position where the magnetic head 20 does not come into contact with the disk cartridge 201 at least when the disk cartridge 201 is inserted.

G-3b A state in which the disk cartridge is being inserted (see FIGS. 6(A) to 6(G), and FIG. 9) In this state, the disk cartridge 201 is inserted in the direction in which the shutter member 211 is attached. Then, insert the disc cartridge 201 into the cartridge holder 35.

Disk cartridge 201 or cartridge holder 35
When the cartridge 203 is inserted into the cartridge holder 35, first, a part of the leading end corner of the cartridge 203 comes into contact with an incorrect insertion prevention bin 77 which is rotatably attached to the cartridge holder 35. At this time, if the insertion direction of the disk cartridge 201 is correct, the disk cartridge 201 causes the mis-insertion prevention bin 77 to rotate outward as indicated by the central portion M in FIG. 6(A), and the disk cartridge 201 is inserted. or planned. On the other hand, if the disk cartridge 201 is inserted into the cartridge holder 35 with the wrong insertion direction, the incorrect insertion prevention bin 77 prevents the disk cartridge from being inserted.

When this disk cartridge 201 is further inserted, as shown in FIGS. 6(B) and 6(C), the shutter opening bin 46 is inserted into the shutter opening member entry recess 223 provided in the cartridge 203. is inset and guaranteed. When the shutter release bin 46 is fitted into the shutter release member entry recess 223, the steps shown in FIG.
As shown in D), the disk cartridge 201 is pushed down toward the disk table 11 by a cartridge push-down member 89 that is formed protrudingly on the upper plate portion 45 of the cartridge holder 35 facing the shutter release bin 46, and In a state where the shutter opening bin escape prevention member 50 provided on the shutter opening bin 46 is prevented from running over, the shutter opening member entering recess 223
The shutter release bin 46 is fitted and secured.

When the disk cartridge 2°l is further inserted into the cartridge holder 35 from this state, the shutter member 2 is inserted into the shutter release bin 46 as shown in FIG. 6(E).
11 is brought into contact with the opening 206 of the disk cartridge 201 as indicated by the arrow N in the figure, and the shutter member 211 resists the biasing force of the torsion coil spring provided inside the cartridge 203 by the shutter opening pin 46. ．．
210 is moved in the direction of opening. At this time, since the shutter release bin 46 is positionally regulated with respect to the glossy release pin guide groove 49 by the shutter release bin escape prevention member 50, the shutter member 211
To surely open the shutter member 211 without running over the surface.

When the disc cartridge 201 is further inserted into the cartridge holder 35, the opening 206.2 of the disc cartridge 201 is opened as shown in FIG. 6(F).
The first and second tongues 8 of the cartridge holder 35 are provided within the opening 206 and 210 of the cartridge holder 10 .
6.87 is coming.

Tips 86a of these first tongue pieces 86 and second tongue pieces 87
, 87a is the notch recess 20 formed in the upper and lower halves 204 and 205 of the cartridge 203, respectively.
6a and 210a, these tongue pieces 86 and 8
The disk cartridge 201 is inserted without the shutter member 211 coming into contact with the disk cartridge 7 . On the other hand, only the lower half 205 has a cutout recess 206 as shown in FIG.
When a disc cartridge 229 containing a CD-ROM or the like having a file name A is inserted into the cartridge holder 35, the connecting piece 214 of the shutter member 211 comes into contact with the first tongue piece 86, and the disc cartridge 2
Insertion of 29 is prevented. That is, depending on whether or not the first and second tongue pieces 86, 87 come into contact with the disc cartridge 201, it is determined whether the disc cartridge can be installed in this optical disc recording and/or reproducing apparatus.

Then, from this state, the disk cartridge 20
1 into the cartridge holder 35, the eject plate holding lever rotating pin 105 of the eject plate holding lever 103 rotatably attached to the cartridge holder support plate 36 comes into contact with the tip of the disk cartridge 201. This eject plate holding lever 103 is rotated in the direction indicated by the center mark 0 in FIG. 6(E), and the engagement between the eject plate holding lever 103 and the eject plate locking member 124 provided on the eject plate 37 is released. . As a result, the eject plate 37 is unlocked, and the eject plate 37 is moved by the fourth tension coil spring 139 stretched across the eject plate 37 and the chassis board 6.
The disk cartridge 201 is slid toward the insertion/ejection opening side. At the same time, one side edge 128 of the notch 128 of the eject plate 37 shown in FIG.
The cartridge retraction operation lever 57, which was engaged with the rotary operation engagement piece 72, is disengaged from the rotation operation engagement piece 72.

As a result, the cartridge retraction bin 54, which has been held outside the disk cartridge 201, is fitted into the cartridge retraction bin insertion hole 228 provided in the disk cartridge 201. Then, this cartridge retraction operation lever 57 and the cartridge holder 3
The cartridge retraction operation lever 57 is rotated by the second tension coil spring 70 tensioned between the cartridge retraction operation lever 57 and the cartridge retraction lever 56 connected to the cartridge retraction operation lever 57 toward the insertion side of the disk cartridge 201. Operate the movement. As a result, the cartridge retracting member 55 provided on the distal end side of the cartridge retracting lever 56 pulls the disk cartridge 201 through the second tension coil spring 70 stretched across the cartridge retracting operation lever 57 and the cartridge holder 35. The disk cartridge 201 is moved in the insertion direction indicated by the center mark P in FIG. 6(G). As a result, the disc cartridge 201 is located on the inner end side of the cartridge holder 35, and the first and second discs provided in the disc cartridge 201 are
The openings 206 and 210 of are fully opened.

G-3c Mounting state of the disk cartridge (see FIGS. 7(A) to 7(D)) Then, as the eject plate 37 is moved, the cartridge holder 35 is moved to the position shown in FIGS. 7(A) to 7(D). 7th
As shown in FIG.
Vertical guide bins 41, 42 and 43, 44 are guided by 8 and are lowered in the axial direction of the spindle shaft lO of the disk rotation drive device 2. That is, the vertical movement guide bins 41.42 and 43.44 are guided by the vertical movement slide grooves 135, 136 and 137.
138, a second sloped portion 135c that slopes sharply downward;
136c, 137c, and 138C, the cartridge holder 35 is lowered along vertical movement guide grooves 95.96 and 97.98 provided in the cartridge holder support plate 36. As a result, the disk cartridge 201 is positioned and mounted in the cartridge mounting section 1. At this time, the disk cartridge 201 is regulated in position and held at a predetermined height by the height positioning bins 7a and 8a provided on the chassis board 6 and the disk cartridge positioning bin 7.8. At the same time, the optical disc 202 housed in the disc cartridge 201 is mounted on the disc table 11.

Then, as the eject plate 37 is moved, the magnetic head elevating frame member vertical lever operation member 142 provided on the eject plate 37 engages with the magnetic head elevating frame member vertical lever 24, thereby causing the magnetic head to move. The head elevating frame member vertical movement lever 24 is rotated, and the magnetic head elevating frame member 23 is moved toward the spindle shaft 10 of the disk rotation drive device 2 shown in FIGS. 7(B) and 7(D). The axial direction is lowered. This frame member 23 for lifting and lowering the magnetic head
In the lowered state, as shown in FIG. 7(A), the leaf spring 111 provided on the eject plate 37 engages with the engaging surface 23a of the magnetic head elevating frame member 23, and this magnetic The head elevating frame member 23 is pressed and energized. As a result, the magnetic head 20 movably supported by the magnetic head elevating frame member 23 faces into the opening 210 of the disk cartridge 201, and faces the signal recording surface of the optical disk 202 housed in the disk cartridge 2O1. It is held at a predetermined height position and is placed facing the optical pickup device 4, so that information signals can be recorded and reproduced.

In the optical disc recording and/or reproducing apparatus configured as described above, the eject plate 37 is used only when recording and reproducing information signals on the optical disc 202.
Since the magnetic head elevating frame member 23 is pressed and biased by a leaf spring 111 provided at In use, the magnetic head 20 can be held at a predetermined height position relative to the optical disk 202 during recording and reproduction.

G-4 Other embodiments (see FIGS. 10(A) to 10(C)) By the way, in the optical disc recording and/or reproducing apparatus configured as described above, the magnetic head 2o is connected to the optical disc 20.
A plate spring 11 was used as a magnetic head device holding device $1110 to hold the magnetic head 20 at a predetermined height position with respect to the signal recording surface of the optical disk 202 when the magnetic head 20 is installed at a recording position close to the optical disk 202. In addition to this, a magnetic head device holding mechanism having a structure as shown in FIGS. 10(A) to 10(C), for example, may also be employed.

This magnetic head device holding mechanism 143 is shown in FIG.
As shown in FIG. 3, a first engagement piece I44 protruding toward the vertical movement lever 24 of the frame member for lifting and lowering the magnetic head is provided on the side wall of the guide portion 23a of the frame member for lifting and lowering the magnetic head 23 that guides one of the lifting shafts 26. In addition, a second retaining piece 145 which is slidably engaged with the first engaging piece 44 is made to protrude from the outer wall of the vertical movement guide portion 33 of the vertical movement lever 24 of the frame member for elevating the magnetic head. Become.

These first engaging pieces 144 and second engaging pieces 145 are located at positions where they do not overlap each other when the magnetic head elevating frame member 23 is in the eject position shown in FIG. 10(A). The frame member 23 for lifting and lowering the magnetic head is shown in FIG.
), the second engagement piece 145 provided on the vertical movement lever 24 of the frame member for lifting and lowering the magnetic head engages with the first engagement piece provided on the frame member 23 for lifting and lowering the magnetic head. They are provided at positions overlapping each other from above the piece 144.

If the magnetic head device holding mechanism 143 having such a configuration is adopted, the magnetic head device holding mechanism 1 shown in the previous embodiment can be used.
10, when the magnetic head 20 is moved to a recording position close to the optical disk 202, the magnetic head 20 can be held at a predetermined height position relative to the signal recording surface of the optical disk 202. Also, when the magnetic head elevating frame member 23 is raised, this magnetic/
\A large load will not be applied to the motor that raises the hood lowering frame member 23.

H1 Effects of the Invention As described above, in the present invention, it is possible to prevent incorrect insertion of a different type of disk due to a difference in the type of disk in the disk cartridge into the disk loading mechanism that loads the disk cartridge into the cartridge mounting portion. By providing the cartridge erroneous insertion prevention means, it is possible to prevent a disk cartridge containing a different type of disk such as a floppy disk that is not compatible with this device from being inserted into the cartridge holder. Therefore, damage to the magnetic head, optical pickup device, etc. provided in this device can be prevented, and the device can be protected.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of an optical disc recording and/or reproducing apparatus according to the present invention. FIG. 2 is an exploded perspective view of this device. FIG. 3(A) is a perspective view of the magnetic head device vertical movement mechanism during ejection, and FIG. 3(B) is a perspective view of the magnetic head device vertical movement mechanism during loading. FIG. 4(A) is an exploded perspective view of the cartridge holder, and FIG. 4(B) is a perspective view of the cartridge holder viewed from the back side. 5(A) to 5(D) respectively show the eject state of this device, FIG. 5(A) is a plan view of this device, FIG. 5(B) is a right side view of this device, Figure 5 (C)
is a left side view of this device, and FIG. 5(D) is a front view of this device. 6(A) to 6(G) respectively show the state in which the disk cartridge is attached to the cartridge holder, and FIG. 6(A) is a plan view showing the state in which it is engaged with the misinsertion prevention bin. (B) is a plan view showing the state of engagement with the shutter release bin, FIG. 6(C) is a cross-sectional view showing the inserted state of the shutter release bin, and FIG. 6(D) is a plan view showing the state of insertion of the shutter release bin. 6(E) is a plan view showing the state in which the eject plate holding lever is engaged with the rotating pin, and FIG.
FIG. 6(F) is a cross-sectional view showing a state in which the shutter member is opened by the shutter release bin, and FIG. 6(G) is a plan view showing a state in which the disc cartridge is retracted. 7(A) to 7(D) respectively show the loading state of this device, FIG. 7(A) is a plan view of the second device, and FIG. 7(B) is a right side view of this device. , Figure 7 (C
) is a left side view of this device, and FIG. 7(D) is a front view of this device. FIGS. 8(A) and 8(B) respectively show disk cartridges installed in the apparatus of the present invention, and FIG.
) is a perspective view of the bottom side of the disk cartridge, and Figure 8 (
FIG. 3B is a perspective view of the top side of the disc cartridge of FIG. FIG. 9 is a perspective view of the bottom side of a disk cartridge that cannot be installed in this device. 10(A) to 10(C) show other examples of the magnetic head device holding mechanism, and FIG. 10(A) is a perspective view of the magnetic head device holding mechanism at the time of ejection, FIG. 10(B) is a perspective view of the magnetic head device holding mechanism during loading, and FIG. 10(C) is a plan view of the magnetic head device holding mechanism during loading. 1...Cartridge mounting section 2...Disk rotation drive device 3...Disk loading mechanism 4...Optical pickup device 5...Magnetic head device 20...Magnetic head 22...Top and bottom of magnetic head device Moving mechanism 23...Magnetic head lifting frame member 23a...Retaining surface 35...Cartridge holder 37...Eject plate 46...Shutter release bin 50...Shutter release bin escape prevention member 85. ...Cartridge incorrect insertion prevention means 86...First tongue piece 87...Second tongue piece 110...Magnetic head device holding mechanism 111...Plate spring 201...Disk cartridge 202... Optical disc patent applicant Sony Corporation representative Patent attorney Akira Koike (and 2 others) Figure 4 (B)
) Figure 5 (A) Figure 5 (B) Figure 5 (C) Figure 5 (D) Figure 6 (A) Figure 6 (B) Figure 6 (E) Figure 6 (G) Figure 7 (A) Figure 8 (B) Figure 9

Claims (1)

[Scope of Claims] A cartridge mounting portion into which a disk cartridge containing an optical disk is mounted; a disk rotation drive device for rotating the optical disk; an optical pickup device for recording and/or reproducing information signals on an optical disk; and an optical pickup device that faces the optical pickup device via the optical disk and synchronizes with the optical pickup device in the radial direction over the inner and outer peripheries of the optical disk. a magnetic head device that is transferred and operated;
a magnetic head device vertical movement mechanism for operating the magnetic head device toward and away from the signal recording surface of the optical disk in a direction substantially perpendicular to the signal recording surface of the optical disk; a disc loading mechanism for mounting and operating the disc into the disc rotation drive device; a cartridge erroneous insertion prevention means provided in the disc loading mechanism to prevent erroneous insertion of a different type of disc due to a difference in the type of disc in the disc cartridge; a magnetic head device holder for holding the magnetic head device at a predetermined height position relative to the signal recording surface of the optical disk when the magnetic head device is moved to a recording position close to the optical disk by a magnetic head device vertical movement mechanism; An optical disc recording and/or reproducing device comprising a mechanism.