JPH05325369A - Disk cartridge loading mechanism - Google Patents

Abstract

PURPOSE:To smoothly execute the inserting and ejecting operation of a disk cartridge and to precisely position the disk cartridge by fixing a receiving plate on which a disk tray is mounted at the time of inserting and ejecting the disk cartridge. CONSTITUTION:This is a mechanism which loads the disk cartridge by the disk tray. Then, the disk cartridge mounted on the receiving plate 39 is positioned and held by positioning members 40 and a supporting member 38 which are movably fitted to the disk tray at an unloading time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge constructed by housing a recording disc in a cartridge,
The present invention relates to a disc cartridge loading mechanism for carrying and mounting a recording and / or reproducing device or the like at a predetermined mounting position.

[0002]

2. Description of the Related Art Conventionally, it is possible to record and / or reproduce an information signal by using a so-called optical disc, magneto-optical disc, or a disc cartridge which is constructed by accommodating a recording disc such as a magnetic disc in a cartridge. A structured recording and / or reproducing device has been proposed.

Such a recording and / or reproducing apparatus includes a rotary operation mechanism for holding and rotating the recording disk, and a magnetic head device for writing and / or reading an information signal to / from the recording disk. And an optical pickup device and the like. The recording and / or reproducing apparatus holds the disc cartridge at a predetermined mounting position and sets the recording disc of the disc cartridge at a predetermined position with respect to the rotation operation mechanism and the optical pickup device. It is configured with a loading mechanism.

A so-called slot-in type is used as the disk cartridge loading mechanism. This slot-in type disc cartridge loading mechanism is used by being disposed on the inner side of a slit having a size substantially corresponding to the front end face of the disc cartridge provided in the outer casing of the recording and / or reproducing apparatus. Be done. The rotation operation mechanism, the optical pickup device, and the like are arranged near the disc cartridge loading mechanism. The disc cartridge loading mechanism has a cartridge holder which holds the disc cartridge when the disc cartridge is inserted and operated. The disc cartridge inserted into the outer casing is inserted into the cartridge holder through the slot, and holds the disc cartridge. When the disc cartridge is inserted into the cartridge holder,
The recording disk of the disk cartridge is moved to the side of the rotation operation mechanism or the like to be mounted on the rotation operation device.

In this disc cartridge loading mechanism, when the cartridge holder is moved away from the rotation operating mechanism or the like, the recording disc mounted on the rotation operating mechanism is released,
The disc cartridge held in the cartridge holder can be taken out to the outside of the outer casing via the slot.

[0006]

By the way, in the above-mentioned disc cartridge loading mechanism,
In order to mount the disc cartridge at a predetermined position, it is necessary to manually push the disc cartridge to the inner side of the outer casing through the slot. Therefore, in this disc cartridge loading mechanism, the disc cartridge cannot be loaded easily and smoothly. That is, in this disc cartridge loading mechanism, since it is necessary to directly push the disc cartridge to move it to the inside of the outer casing, it is difficult to perform this movement operation by a driving device such as a motor. However, manual operation becomes indispensable.

Further, in this disc cartridge loading mechanism, ejection from the slit of the disc cartridge is performed by a biasing member such as a spring. Therefore, when inserting this disc cartridge from the slit, this insertion operation is
It is necessary to resist the urging force of the urging member, and it cannot be performed lightly.

Conventionally, a so-called tray type mechanism has been proposed as a mechanism for loading a recording disk which is used without being housed in a cartridge. This tray type loading mechanism is used for recording and / or
Alternatively, the disk tray is configured so as to be capable of projecting and retracting toward the outer side of the outer casing of the reproducing apparatus. The disc tray is placed and removed when the recording disc is projected to the outside of the outer casing, and the recording disc is rotated and operated when the recording disc is retracted into the outer casing. And the like. In such a tray type loading mechanism, since the movement operation of the disc tray can be performed by a driving device such as a motor, an easy, smooth, and light loading operation can be performed.

However, in such a tray type loading mechanism, after the loading operation is completed, the bottom plate portion of the disc tray on which the recording disc is placed is placed between the recording disc and the rotation operating mechanism. Therefore, it is difficult to apply it to the loading of the disc cartridge as it is. That is, when loading the disk cartridge, if not only the recording disk but also the cartridge is positioned and held, the recording disk will slide against the inner wall of the cartridge when the recording disk is rotated. However, there is a possibility that the rotation operation of this recording disk cannot be performed smoothly. If the bottom plate portion of the disc tray is interposed between the disc cartridge and the rotation operation mechanism, it becomes difficult to accurately position the cartridge.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and when the disk cartridge is loaded, the recording disk and the cartridge containing the recording disk can be accurately positioned. Moreover, it is an object of the present invention to provide a disc cartridge loading mechanism that enables this loading operation to be performed easily, smoothly, and lightly.

[0011]

In order to solve the above problems and achieve the above object, a disk cartridge loading mechanism according to the present invention is provided with a receiving plate on which a disk cartridge is mounted and the receiving plate can be moved up and down. A disc tray that has a supporting frame portion and is operated to move the disc cartridge between a position where the disc cartridge is located above the recording / reproducing unit and an attachment / detachment operation position of the disc cartridge; A slider member that pushes up at least a part of the disc cartridge mounted on the receiving plate to the upper side when the disc tray is in the mounting / demounting operation position of the disc cartridge; and a slider member movably attached to the disc tray. When the disc tray is in the operation position for attaching and detaching the disc cartridge, In conjunction with the rider member is made and a positioning member for the horizontal positioning of the mounted disk cartridge onto the backing plate.

According to the present invention, in the above-mentioned disc cartridge loading mechanism, the slider member is
When at least a part of the disk cartridge placed on the receiving plate is pushed upward, the downward movement of the receiving plate with respect to the frame portion is restricted.

[0013]

In the disk cartridge loading mechanism according to the present invention, the disk cartridge placed on the receiving plate of the disk tray is mounted on the disk tray when the disk tray is in the operation position for loading and unloading the disk cartridge. At least part of which is pushed upward by a slider member movably attached to the disk tray, and horizontal positioning is performed by a positioning member which is movably attached to the disk tray and is moved in conjunction with the slider member. ..

Further, in this disc cartridge loading mechanism, when the slider member pushes at least a part of the disc cartridge mounted on the receiving plate upward, the downward movement of the receiving plate is restricted. In such a case, when the disc tray is at the disc cartridge attaching / detaching operation position, the receiving plate is stabilized, and the disc cartridge attaching / detaching operation can be smoothly performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. This example is an example in which the disc cartridge loading mechanism according to the present invention is configured to be used in a recording and reproducing apparatus for recording and reproducing an information signal by using a disc cartridge.

In this recording / reproducing apparatus, either the recording / reproducing disc cartridge 201 shown in FIGS. 19 and 20 or the reproduction-only disc cartridge 211 shown in FIGS. 21 and 22 is selectively used as the disc cartridge. Used for.

The recording / reproducing disc cartridge 2
Reference numeral 01 is configured by rotatably storing a recording / reproducing disk 205 in a recording / reproducing cartridge 202. The recording / reproducing disk 205 is a so-called magneto-optical disk, and is a disk-shaped disk substrate made of a transparent synthetic resin or the like, and a signal made of a magnetic material adhered to one main surface of the disk substrate. And a recording layer. A chucked portion is provided at the center of the disk substrate. The chucked portion has a circular through hole 217 formed in the disk substrate.
And a metal plate 216 that closes the through hole 217. The through hole 217 of the chucked portion has its center aligned with the center of curvature of a recording track formed in a spiral shape having a substantially concentric shape in the signal recording layer.

An annular portion around the through hole 217 on the other main surface portion of the disc substrate is formed as a protrusion and serves as a positioning reference portion 223. Further, the metal plate 216 is fitted and disposed in a recess 218 provided around the through hole 217 in the main surface portion on one side of the disc substrate, and is disposed on the main surface portion on one side of the disc substrate. It is designed not to project.

The recording / playback cartridge 202 is
It is formed in a thin housing having a size capable of accommodating the recording / reproducing disk 205. An opening 203 for a magnetic head is formed in the main surface portion of the upper surface of the recording / reproducing / reading cartridge 202 so that the main surface portion on one side of the recording / reproducing / reading disk 205 faces the outer side over the inner and outer circumferences. ing. The recording / playback cartridge 20 is also used.
In the main surface portion on the lower surface side of 2, the recording / playback disc 2
An opening 215 for an optical pickup device is formed so that the other main surface of 05 is exposed to the outside along the inner and outer circumferences. The openings 203 and 215 are formed at positions facing each other and have substantially the same size and shape. That is, the openings 203 and 215 are located laterally with respect to the mounting direction of the recording / reproducing disc cartridge 201 in the disc cartridge loading mechanism from the substantially central position of each main surface of the recording / reproducing cartridge 202. Is formed in a substantially rectangular shape over the vicinity of the side portion. Further, a chucking opening 219 for exposing the chucked portion and the positioning reference portion 223 to the outside is provided in the central portion of the main surface portion on the lower surface side of the recording / playback cartridge 202. There is.

The recording / playback cartridge 2 is also used.
A shutter member 204 for opening and closing the openings 203 and 215 is slidably attached to 02. The shutter member 204 is formed by bending a rectangular thin plate member made of synthetic resin, metal, or the like into a U shape, and the opening portions 203, 2 are formed by the side portions.
The lid 15 can be closed. This shutter member 2
Reference numeral 04 designates the central portion of the recording / playback cartridge 20.
It is supported by one side edge portion 2 so as to be slidable in the front-rear direction along the one side edge portion. This shutter member 204
Slides with respect to the recording / reproducing cartridge 202 to open and close the openings 203 and 215.

A shutter lid operating hole 207 for closing the shutter member 204 is provided in the central portion of the shutter member 204 supported by one side edge of the recording / playback cartridge 202. ing.

The recording / playback cartridge 20 is also used.
2 has a pair of front and rear positioning holes 22 in the main surface portion on the lower surface side.
0,221 are drilled. These positioning holes 22
Nos. 0 and 221 are adapted to position the recording / reproducing cartridge 202 with respect to the recording / reproducing unit of the recording / reproducing apparatus by inserting a positioning pin in the recording / reproducing apparatus. A recording / playback marking section 209 is provided at the front end position of the main surface portion on the lower surface side of the recording / playback cartridge 202. The recording / reproducing dual-use marking portion 209 is a concave portion having a very shallow depth and formed in the main surface portion of the recording / reproducing dual-use cartridge 202.

Further, the recording / playback cartridge 2 is also used.
The shutter member 20 is provided on one edge of the shutter member 20 from the front end side.
A shutter opening groove 206 is provided over the central portion of No. 4. In the disk cartridge loading mechanism, the shutter opening piece is inserted into the shutter opening groove 206 from the front side, whereby the shutter member 204
Is slid to the rear side of the recording / playback cartridge 202 to open the openings 203 and 215. A shutter supporting projection 208 is provided at a central portion of the shutter member 204 supported by one side edge of the recording / reproducing cartridge 202 so as to project forward along the shutter release groove 206. Has been done.

The recording / playback cartridge 20 is also used.
An erroneous insertion prevention groove 224 is provided from the front end side at the side edge portion of the other side opposite to the above one side edge portion of 2. In the disc cartridge loading mechanism, the erroneous insertion prevention piece is inserted into the erroneous insertion prevention groove 224 from the front side.

On the other hand, the reproduction-only disc cartridge 211 is constructed by rotatably housing the reproduction-only disc 214 in the reproduction-only cartridge 212. The reproduction-only disc 214 has a disc-shaped disc substrate made of a transparent synthetic resin or the like, and a reflective layer made of a metal material adhered to one main surface portion of the disc substrate. There is. This read-only disc 214 is
It has the same size as the recording / playback disc 205. An information signal is recorded on the main surface portion of one side of the disc substrate of the reproduction-only disc 214 by forming fine irregularities by means such as injection molding. A chucked portion is provided at the center of the disc substrate. Like the chucked portion of the recording / playback disc 205, this chucked portion includes a circular through hole 217 formed in the disc substrate and a metal plate 216 that closes the through hole 217. It is configured.

The reproduction-only cartridge 212 is formed in a thin casing having a size capable of accommodating the reproduction-only disc 214. An opening 215 for an optical pickup device is formed in the lower main surface of the reproduction-only cartridge 212 so that the other main surface of the reproduction-only disc 214 faces the outer side over the inner and outer circumferences. There is. The opening 215 for the optical pickup device is located near the center of the main surface of the reproduction-only cartridge 212 and near the side of the reproduction-only disc cartridge 211 on the side with respect to the mounting direction to the disc cartridge loading mechanism. Is formed in a substantially rectangular shape. A chucking opening 219 for exposing the chucked portion and the positioning reference portion 223 to the outside is provided at the center of the lower main surface of the reproduction-only cartridge 212. ..

Then, the reproduction-only cartridge 212
A shutter member 213 for opening and closing the opening 215 for the optical pickup device is slidably attached to. The shutter member 213 is formed by bending one end side of a rectangular thin plate member made of synthetic resin, metal or the like, and has the opening 21 for the optical pickup device.
5 can be closed. This shutter member 21
The bent one end side portion is supported by one side edge portion of the reproduction-only cartridge 212 so as to be slidable in the front-back direction along the one side edge portion. The shutter member 213 slides with respect to the reproduction-only cartridge 212 to open and close the optical pickup device opening 215.

The shutter member 213 includes a shutter member 20 of the recording / reproducing disk cartridge 201.
4, the shutter closing operation hole 207 and the shutter supporting projection 208 are provided.

Further, the reproduction-only cartridge 212 has a pair of front and rear positioning holes 220 and 221 and a shutter opening groove 2 as in the recording / reproduction / use cartridge 202.
06 and erroneous insertion prevention groove 224 are provided.

Then, this reproduction-only cartridge 212
At the position of the front end of the main surface on the lower surface side of the
10 are provided. This reproduction-only labeling unit 210
This is a recess formed in the main surface of the reproduction-only cartridge 212, which is deeper than the recording / reproduction / display section 209.

The disk cartridge loading mechanism according to the present invention, as shown in FIG.
It is configured with. This chassis 1 is made of a metal plate material or the like, and is made up of a chassis bottom plate portion 2 and left and right side plates 3 and 2 which are mounted on both sides of the chassis bottom plate portion 2 so as to be substantially perpendicular to the chassis bottom plate portion 2. And a part 4 are formed.

On the chassis bottom plate portion 2 of the chassis 1,
Writing and reading of information signals to / from the recording / playback disc 205, or the playback-only disc 214.
A recording / reproducing unit 41 for reading the information signal is fixedly attached. This recording / reproducing unit 41 is shown in FIG.
As shown in FIG. 5, the base portion 57 is attached to the chassis bottom plate portion 2 and is configured. This base 57 is
Substantially the entire upper surface is made to face the upper side of the chassis bottom plate 2 through the notch 5 provided in the chassis bottom plate 2. A spindle motor for rotating the disks 205 and 214 is attached to the base 57 at approximately the center. In this spindle motor, the drive shaft 67 is projected to the upper surface side of the base 57. A disc table 43 on which the discs 205 and 214 are placed is attached to the tip end side of the drive shaft 67. The disc table 43 is formed in a substantially disc shape, and is supported by the drive shaft 67 by fitting the drive shaft 67 into a support hole provided in the central portion.
On the upper surface side of the disc table 43, a centering portion 66 formed in a substantially truncated cone shape is provided in the central portion, and the peripheral side portion of the centering portion 66 serves as a disc mounting portion 65. This centering portion 66
Is formed to have an outer diameter that can be fitted into the through hole 217 of the chucked portion of each of the disks 205 and 214. The centering portion 66 is provided for each of the disks 20.
When the positioning reference portions 223 of 5, 214 are placed on the disc placing portion 65, the outer peripheral surface portion is provided with the through hole 2
The discs 205, 21 are brought into contact with the inner edge of
4. Centering is performed.

On the disc table 43, the metal plate 21 of the chucked portion of each disc 205, 214 is attached.
A magnet for attracting 6 is attached. With this magnet, the disk table 43 positions and holds the disks 205 and 214.

A pair of front and rear positioning pins 59 and 60 are erected on the base 57. The positioning pins 59, 60 are formed in a substantially spindle shape with the diameter of the tip end reduced. These positioning pins 59, 60
Fits into the positioning holes 220, 221 of the disk cartridges 201, 211 mounted on the base 57, and positions the cartridges 202, 212 with respect to the base 57.

A pair of front and rear positioning protrusions 61 and 62 are planted on the base 57. These positioning protrusions 61 and 62 abut on the bottom surfaces of the respective disk cartridges 201 and 211 mounted on the base part 57, and the respective cartridges 2 with respect to the base part 57.
The positioning of the height position of 02,212 is performed.

The optical pickup device 42 can be moved on the base 57 of the recording / reproducing unit 41 in the direction of contacting with or separating from the disc table 43, as indicated by an arrow C in FIGS. 1 and 13. Installed on.

The optical pickup device 42 has an optical block portion, and a light source such as a laser diode, a predetermined optical device for guiding a light beam emitted from the light source, and the disks 205 and 214 are reflected in the optical block portion. In addition to having a built-in photodetector and the like for receiving the luminous flux, an objective lens driving device is attached to the optical block section. In this optical pickup device, the light flux emitted from the light source is emitted from the optical block portion and is incident on the objective lens 68 supported by the objective lens driving device. This objective lens 68
Collects the incident light flux. The objective lens driving device operates the objective lens 68 in two axial directions, that is, the optical axis direction of the objective lens and the direction orthogonal to the optical axis.

The optical pickup device 42 is supported by a pair of guide shafts 69 and 70 which are parallel to each other and attached to the base 57, and can be moved in the axial direction of the guide shafts 69 and 70. Has been done. That is, the guide shafts 69 and 70 are inserted through the bearing holes formed in the optical block portion.

In the optical pickup device 42, the objective lens driving device faces the upper side of the base 57. In the optical pickup device 42, the optical axis of the objective lens 68 is perpendicular to the base 57, that is, perpendicular to the chassis bottom plate 2.

A magnetic head 45 is attached to the optical pickup device 42 through a magnetic head support member 73. As shown in FIG. 15, the magnetic head supporting member 73 has a connecting arm portion that is attached to the optical block portion of the optical pickup device 42 at the base end side and extends substantially parallel to the base portion 57. The magnetic head support arm 44 is rotatably supported on the tip end side of the connecting arm portion. The magnetic head support arm 44 is supported on the rear end side by the connecting arm portion via a support shaft 71, and extends from the rear side of the base portion 57 toward the front side.
By rotating the magnetic head support arm 44 around the support shaft 71, the front end side, that is, the free end side, can be displaced in a direction of contacting and separating from the base 57.

A magnetic head 45 is attached to the front end of the magnetic head support arm 44 on the side facing the base 57. The magnetic head 45 is held at a position facing the objective lens 68. That is,
The magnetic head 45 is located on the optical axis of the objective lens 68, and is movable in the direction of coming into contact with and separating from the objective lens 68.

A torsion coil spring 74 is externally wound and attached to the support shaft 71 which supports the magnetic head support arm 44. This torsion coil spring 74 is
The magnetic head support arm 44 is attached to the magnetic head 45.
Is urged to rotate away from the objective lens 68. Therefore, the magnetic head support arm 44
In the initial state where the disk cartridges 201 and 211 are not mounted, the magnetic head 45 is at the initial position separated from the objective lens 68, as shown in FIGS.

A marking portion detecting arm 78 is attached to the magnetic head supporting arm 44 so as to extend toward the front side. This magnetic head support arm 44
When the recording / playback disc cartridge 201 is mounted on the base portion 57, the tip end side of the marking portion detection arm 78 is pressed by the bottom portion of the recording / playback marking portion 209 to rotate the support shaft 71 around. 18, the magnetic head 45 is brought into a first position in which the magnetic head 45 is brought into sliding contact with the recording / reproducing disk 205 as shown in FIG. In addition, the magnetic head support arm 44 includes the base 57.
When the reproduction-only disc cartridge 211 is mounted on the top, the tip end side of the marking portion detection arm 78 is pressed by the bottom portion of the reproduction-only marking portion 210, and the spindle 71 is pushed.
17, the magnetic head 45 is rotated relative to the initial position, as shown in FIG.
Although the magnetic head 45 is moved to the 4 side, the magnetic head 45 is moved to the second position separated from the reproduction-only cartridge 212.

On the chassis bottom plate portion 2, there is provided a cartridge holder 26 for holding the disc cartridges 201 and 211 by inserting and operating the disc cartridges 201 and 211 from the front side. As shown in FIGS. 2 to 5, the cartridge holder 26 is rotatably supported by the cartridge pressing plate 27. The cartridge pressing plate 27 has a flat plate-shaped main surface portion having substantially the same size and shape as the main surface portions of the disk cartridges 201 and 211, and side wall portions hanging from both side portions of the main surface portion. It is formed of a metal plate or the like. The cartridge pressing plate 27 is disposed on the chassis bottom plate portion 2, and the rear side portion of each side wall portion is rotatably supported by the chassis bottom plate portion 2 via a support shaft 121. The bottom plate portion 2 can be brought into contact with and separated from the bottom plate portion 2. In this cartridge pressing plate 27,
As shown in FIG. 1, each of the cartridges 202 and 212 is
A plurality of leaf spring portions 27a for pressing and supporting the blades are formed by cutting and raising.

The cartridge holder 26 has a housing-like shape having a size substantially corresponding to each of the cartridges 202 and 212 so that the cartridges 202 and 212 can be inserted from the front side. A part of the lower surface portion is formed to be open. The cartridge holder 26 is arranged on the lower surface side of the cartridge pressing plate 27 so as to extend substantially along the cartridge pressing plate 27, and both side portions on the rear side thereof are supported by the support shaft 129. It is rotatably supported in the middle part. That is, this cartridge holder 26
Is capable of coming into contact with and separating from the cartridge pressing plate 27, and the cartridge pressing plate 27
When is rotated to the chassis bottom plate portion 2 side, it is clamped by the cartridge pressing plate 27 and the chassis bottom plate portion 2. A pair of rotation restricting pins 131 are provided in the cartridge holder 26 at approximately midway portions on both sides. The rotation restricting pins 131 are fitted in a pair of rotation restricting holes 131 provided on both sides of the cartridge pressing plate 27. The rotation angle of the cartridge holder 26 with respect to the cartridge pressing plate 27 is restricted within a range in which the rotation restriction pins 131 move in the rotation restriction holes 130.

As shown in FIGS. 9 and 10, a pair of shutter closing lid pieces 128, 128 is provided on both sides of the cartridge holder 26 on the front end side. The shutter closing pieces 128, 128 are attached to the cartridge holder 26 with respect to the disk cartridges 201, 211.
When the disk cartridge is inserted or taken out, the disk cartridges 201 and 211 are elastically clamped from both sides. These shutter lid pieces 128, 128 are provided with bent portions 160, 161, which are bent so as to bulge inward, facing each other in the middle. Further, the shutter opening piece 158 and the erroneous insertion preventing piece 159 are provided on both sides of the inner side of the cartridge holder 26.
They are provided so as to face each other and project inward.

When the disc cartridges 201 and 211 are inserted into the cartridge holder 26 from the front side in a predetermined direction, the shutter opening piece 158 enters the shutter opening groove 206 as shown in FIG. At the same time, the erroneous insertion prevention piece 159 enters the erroneous insertion prevention groove 224. The disk cartridges 201 and 211 are attached to the cartridge holder 26.
When the shutter opening piece 158 comes into contact with the front end portion of the shutter support projecting piece portion 208 by being moved inward of the
The bent portion 160 of the shutter closing lid piece 128 on the shutter member 204, 213 side is formed with the shutter closing operating hole 20.
Insert into 7 When the disc cartridges 201 and 211 are further inserted into the cartridge holder 26, the shutter members 204,
Since 213 is stopped at the position where the front end of the shutter supporting projection 208 is brought into contact with the shutter opening piece 158, it is slid with respect to the cartridges 202 and 212, and the openings 203 are formed. , 215 are opened.

A disc tray is arranged on the chassis bottom plate 2. The disc tray includes a receiving plate 39 on which the disc cartridges 201 and 211 are placed and a frame portion 30 that supports the receiving plate 39 so as to be vertically movable. The receiving plate 39
Is formed of a thin metal plate or the like having substantially the same shape and size as the main surface portions of the disc cartridges 201 and 211. As shown in FIG. 9, the receiving plate 39 has a plurality of openings 149, 150, 151, 152.
Has been established. These openings 149, 150, 15
When the disc cartridges 201 and 211 are placed on the receiving plate 39, the optical pickup devices 1 and 152 are provided with an optical pickup device opening 215, a chucking opening 219, and a positioning hole 220. , The marking portions 209, 210, etc. on the receiving plate 3
It is intended to face the lower side of 9.

The frame portion 30 is made of a material such as synthetic resin and has a linear portion located on the front end side of the receiving plate 39 and linear portion portions located on both sides of the receiving plate 39.
It is formed to have a substantially U shape. That is, the rear side of the frame portion 30 is open. This frame 30
Has a length in the front-rear direction which is equal to that of the disc cartridge 20.
The length of the main surface portions of the reference numerals 1 and 211 is approximately double the length in the front-rear direction. Rear end side portions of both side portions of the frame portion 30 are connected to each other via a connecting plate 31. The connecting plate 31 is formed of a material such as a thin metal plate and is attached to the upper surface of the frame 30.

The frame portion 30 supports the receiving plate 39 so as to be vertically movable. A pair of support pins 145, 146 are planted on both sides of the upper surface of the receiving plate 39. These support pins 145, 146 are provided as a pair of support holes 14 provided on both sides of the frame 30.
7, 148 correspondingly fitted from the lower side. The receiving plate 39 is configured to be movable in the vertical direction along the support pins 145, 146 along the support holes 147, 148. The receiving plate 39 has a front edge near the front straight portion of the frame 30. The receiving plate 39 is elastically biased upward by a spring arranged in the frame portion 30.

The frame 30 has the receiving plate 39.
In order to facilitate the loading and unloading of the disk cartridges 201 and 211 to be placed on the disk cartridges 201 and 211, a part of both sides of the disk cartridges 201 and 211 is provided at a position corresponding to both sides of the disk cartridges 201 and 211. Is provided with a pair of notches 32 and 33 facing the outside.

This disc tray is disposed on the chassis bottom plate portion 2, and the disc cartridges 201 and 211 mounted on the receiving plate 39 are positioned above the recording / reproducing portion 41 and the disc cartridge 201. , 2
It is movable across 11 attachment / detachment operation positions. That is, the guide member 34 is attached to one side portion of the frame body 30. This guide member 34 is
The frame portion 30 is formed of a material such as a synthetic resin and has a shaft insertion hole 35, and is attached to the frame portion 30.
It is projected more toward one side. This guide member 34
The guide shaft 29 attached to the left side plate portion 3 is inserted into the shaft insertion hole 35. As shown in FIG. 10, the guide shaft 29 is supported at the front end side by a shaft support portion 136 formed by bending the front end side portion of the left side plate portion 3 outward, and the left side plate portion 3 is formed.
The rear end side is supported by a shaft support portion 137 provided at the rear end side portion, extends in the front-rear direction, and is attached to the left side plate portion 3. A guide protrusion 139 is provided on the other side of the frame portion 30 so as to protrude in the front-rear direction. The guide protrusion 139 is slidably supported on the upper side portion of the right side plate portion 2. The disc tray is slidable in the front-rear direction along the guide shaft 29 and the guide protrusion 139.

As shown in FIGS. 4 and 5, this disc tray has the receiving plate 39 positioned above the recording / reproducing section 41 when moved to the rear side in the direction of arrow B in FIG. 1 and is moved to the front side, which is the direction of arrow A in FIG. 1, as shown in FIGS. 2 and 3, the receiving plate 39 becomes a position protruding toward the front side of the chassis 1, The unloading position is set so that the disc cartridges 201 and 211 can be attached to and detached from the receiving plate 39.

The disc tray is moved by a loading motor 110 attached to the left side plate 3. That is, the drive gear 109 attached to the drive shaft of the loading motor 110 meshes with the large diameter gear portion 108 of the first reduction gear rotatably attached to the left side plate portion 3 via the support shaft 132. ing. The small-diameter gear portion 107 of the first reduction gear meshes with the large-diameter gear portion 106 of the second reduction gear rotatably attached to the left side plate portion 3 via the support shaft 133.
The small-diameter gear portion 105 of the second reduction gear meshes with the outer peripheral gear portion 111 of the cam gear 28 rotatably attached to the left side plate portion 3 via the support shaft 134. As shown in FIG. 8, the cam gear 28 has the outer peripheral gear portion 111 formed on the outer peripheral side thereof, and has the first outer peripheral surface on the one main surface portion.
This is a gear in which the cam groove 112 is formed. The outer peripheral gear portion 111 is formed with a toothless portion 142 which is substantially half the entire width of the outer peripheral gear 111 over an angular range of approximately 90 °, but the small diameter gear portion 105 of the second reduction gear is Since the outer peripheral gear 111 is meshed over the entire width, the cam gear 28 can be rotated over the entire circumference.

On the other hand, on the bottom surface of the frame portion 30, the outer peripheral gear portion 111 of the cam gear 28 is connected to the outer peripheral gear portion 111.
About half of the full width of the tooth, that is, the toothless portion 142
A rack gear 135 is formed so as to mesh with a portion corresponding to the portion where is formed. That is, the frame portion 30 is
When the cam gear 28 rotates, the cam gear 28 is rotated within a rotation range of about 270 °, that is, the outer peripheral gear portion 1 is rotated.
The moving operation is performed within a range in which 11 is meshed with the rack gear 135. The frame portion 30 is not moved within the rotation range of the cam gear 28 of approximately 90 °, that is, within the range in which the toothless portion 142 faces the rack gear 135. That is, by the time the disc tray reaches the loading position shown in FIG. 4 from the unloading position shown in FIG. 2, the cam gear 28 moves in the direction indicated by arrow H in FIG. A rotation of about 270 ° is performed.
A part of the outer peripheral gear 111 of the cam gear 28 faces the upper side of the chassis bottom plate portion 2.

Then, the loading motor 110
Moves not only the disc tray but also the cartridge pressing plate 27. When the cartridge pressing plate 27 is moved by the loading motor 110, the toothless portion 142 is the rack gear 1 of the frame portion 30.
The rotation is performed by rotating the cam gear 28, which faces 35, within an angular range of approximately 90 °.

That is, the cartridge pressing plate 27
The limiter plate 1 is attached to the rear side portion of the
22 is attached. The limiter plate 122 is projected below the rear side portion of the cartridge pressing plate 27, and has a pin insertion hole 126 in this projected portion. Further, the limiter plate 122 is urged to rotate by a tension coil spring 124 in a direction in which the pin insertion hole 126 is moved to the cartridge pressing plate 27 side. The limiter plate 122 faces the lower side of the chassis bottom plate portion 2 through an opening provided in the chassis bottom plate portion 2. On the other hand, on the lower side of the chassis bottom plate portion 2, there is provided a copying arm 119 whose base end side is rotatably supported by the left side plate portion 3 via a support shaft 120. The copying arm 119 has a copying pin 118 on the front end side, and the copying pin 118 is engaged with the first cam groove 112 of the cam gear 28.
An operation pin 125 is provided so as to project in the middle of the copying arm 119. The operation pin 125 is inserted into the pin insertion hole 126, and the tension coil spring 1
It is held by the edge of the pin insertion hole 126 and the rear side portion of the cartridge pressing plate 27 by the urging force of 24. That is, the cartridge pressing plate 2
When the copying arm 119 is rotated, the 7 is rotated with respect to the chassis bottom plate portion 2 via the operation pin 125.

The first cam groove 112, with which the copying pin 118 of the copying arm 119 is engaged, has the above-mentioned copying arm 119 over a rotation angle range of approximately 270 ° for moving the disk tray. It is formed in an arc shape so as not to rotate. At this time, the cartridge pressing plate 27 is held at a position separated from the chassis bottom plate portion 2 as shown in FIGS.
At this time, the cartridge holder 26 is rotated by gravity in the direction in which the front end side is lowered with respect to the cartridge pressing plate 27, and is parallel to the chassis bottom plate portion 2. Then, the first cam groove 1
The reference numeral 12 indicates that the copying arm 119 is rotated over the rotation angle range of about 90 ° of the cam gear 28 after the disc tray has reached the loading position.
As shown in FIG. 5, in order to lower the cartridge pressing plate 27 to the chassis bottom plate portion 2 side, the cartridge pressing plate 27 is formed in a spiral shape gradually approaching in the direction of the central support shaft 134.

Further, the cam gear 28 has a switch pressing piece 113 at a position on the outer peripheral side of the first cam groove 112. The switch pressing piece 113 is for pressing the pressing element of the detection switch 104 mounted near the cam gear 28. When the disc tray is in the unloading position shown in FIG. 2, the switch pressing piece 113 has an arrow F in FIG.
As shown by, the pressing element is pressed in one direction. In the switch pressing piece 113, as shown in FIG. 5, the disc tray is in the loading position and the cartridge pressing plate 27 is in the chassis bottom plate portion 2.
When it is rotated to the side, that is, when the loading operation is completed, the pressing element is pressed in the other direction as indicated by an arrow N in FIG. When the pusher of the detection switch 104 is pushed in either direction, the loading motor 110 is stopped via a control device (not shown).

Then, as shown in FIGS. 9, 11 and 12, a pair of sliders 36 and 37 forming a slider member are attached to the frame portion 30 of the disc tray. These sliders 36 and 37 are slidably supported in the front-rear direction on the bottom surfaces of the linear portions on both sides of the frame portion 30 and are correspondingly attached thereto. These sliders 36, 37 have support holes 167, 168, 169, 170 whose major axis direction is the front-rear direction,
Support pins 163, 164 planted in the bottom surface of the frame 30 in the support holes 167, 168, 169, 170.
165 and 166 are inserted and supported. These sliders 36 and 37 are respectively provided at the rear end portion and the frame portion 30.
The compression coil springs 171 and 172 fitted between and are elastically biased in the forward direction indicated by the arrow R in FIG.

Then, the sliders 3 and 37 are arranged so as to extend between the front end side portions thereof.
A cartridge pushing-up member 38, which constitutes the slider member together with 6, 37, is attached. The cartridge pushing-up member 38 is provided with the sliders 36, 27.
When is moved to the front side of the frame portion 30, it is stored below the linear portion on the front side of the frame portion 30. As shown in FIG. 12, when the sliders 36 and 37 are slid rearward with respect to the frame portion 30, the cartridge pushing-up member 38, together with the sliders 36 and 37, moves to the frame portion 30. It is moved to the rear side of the front straight portion, that is, the side close to the receiving plate 39. The cartridge pushing-up member 38 is
A pair of cartridge pushing-up protrusions 143, 144 and a receiving plate supporting piece 162 are provided on the edge of the rear side facing the receiving plate 39.

As shown in FIG. 2, the cartridge pushing-up member 38 has the sliders 3 when the disc tray is in the unloading position.
The discs 6 and 37 are slid rearward with respect to the frame portion 30 so that the discs are positioned rearward of the front straight portion of the frame portion 30 and placed on the receiving plate 39. As shown by the arrow D in FIG.
While pushing upward with 3,144,
The receiving plate support piece 162 is inserted below the front edge of the receiving plate 39 to support the receiving plate 39. When the sliders 36, 37 are slid with respect to the frame portion 30, the sliders 36, 37 that have been moved in the frontward direction together with the frame portion 30 are moved by the sliders 36, 37.
After abutting pieces 157 and 173 projecting on the rear end side of 37 are brought into contact with the abutting portions 156 and 174 provided on the chassis 1 to be stopped, they are indicated by an arrow P in FIG. As described above, it is caused by moving the frame portion 30 further to the front side.

Further, a pair of positioning members 40, 40 are attached to the frame portions 30 at substantially midway portions of the linear portions on both sides thereof. These positioning members 40, 40 are rotatably supported with respect to the frame portion 30 at approximately midway portions thereof, and copy pins 176, 176 projectingly provided on the rear end side thereof,
Cam grooves 175 provided on the sliders 36 and 37
It is inserted corresponding to 175. Then, the positioning members 40, 40 have the front end side portion at the frame portion 30.
Of the receiving plate 39 so as to face each other in the inner side direction and are located on both sides of the rear side portion of the receiving plate 39.
These positioning members 40, 40 are used for the sliders 3 described above.
As shown in FIG. 11, the front end side portions of the frames 6 and 37 are located at the front side of the frame portion 30 when the frames 6 and 37 are at the front side positions.
It is arranged along with. Then, when the sliders 36, 37 are slid to the rear side positions of the frame portion 30, the positioning members 40, 40 move the cams by the copying pins 176, 176 as shown by an arrow Q in FIG. By moving along 175 and 175,
The front end side portions are rotated so as to project toward the inner side direction of the frame portion 30, which is the direction in which they approach each other. When the front end portions of the positioning members 40, 40 are rotated in a direction of approaching each other, the front end portions cause the disc cartridges 201, 21 placed on the receiving plate 39.
The disk cartridges 201 and 211 are positioned in the horizontal direction by sandwiching 1 in cooperation with each other from the side.

Further, in the first cam groove 112, the copying pin 117 provided on the rear end side of the stopper arm 114.
Are engaged. The stopper arm 114 is rotatably supported in the middle part by the left side plate portion 3 via a support shaft 115 so that the copying pin 117 on the rear end side is engaged with the first engagement groove 112. ing. The stopper arm 114 has a stopper protrusion 116 on the front end side. The stopper protrusion 116 is provided on the upper side. The stopper arm 114 is the copy arm 11 described above.
As in FIG. 9, as shown in FIGS. 2 to 4, the cam gear 28 moves approximately 27 for moving the disc tray.
When it is within the rotation angle range of 0 °, the stopper protrusion 116 is held in a state of being lowered to a position where it does not contact the frame portion 30. And this stopper arm 1
As shown in FIG. 5, the reference numeral 14 indicates approximately 90 ° for the cam gear 28 to move the cartridge pressing plate 27.
When rotated, the copying pin 117 is moved toward the center of the cam gear 28 by the first cam groove 112, so that it is rotated to move the stopper protrusion 116 so as to move the stopper protrusion 116, as shown by an arrow L in FIG. The stopper projections 116 are moved up and fitted into the locked recesses 103 provided on the bottom surface of the frame 30. The disc tray is accidentally moved to the front side even if the engagement between the outer peripheral gear portion 111 and the rack gear 135 is released by fitting the stopper protrusion 116 into the locked recessed portion 103. There is no.

The chassis 1 is a support substrate 18 fixedly arranged in the outer housing of the recording and reproducing apparatus.
In contrast, the so-called floating support is attached. The support substrate 18 is configured to have a bottom plate portion 19 and a pair of side wall portions 20 and 21 which are vertically provided on the bottom plate portion 19 so as to be parallel to each other and face each other. The side plate portions 20 and 21 are arranged with a space slightly wider than the space between the left side plate part 3 and the right side plate part 4.

As shown in FIGS. 1, 6 and 7, the chassis 1 includes four tension coil springs 6, 7, 8, 9 and four dampers 22, 2 with respect to the support substrate 18.
It is supported via 3, 24 and 25. That is, the tension coil spring 9 is stretched between the spring locking piece 13 provided on the front end side of the left side plate portion 3 and the spring locking piece 17 provided on the front end side of the side wall portion 21. ing. Further, the tension coil spring 7 is stretched between the spring locking piece 10 provided on the rear end side of the left side plate portion 3 and the spring locking piece 16 provided on the rear end side of the side wall portion 21. It is hung. Similarly, the tension coil spring 8 is stretched between the spring locking piece 11 provided on the front end side of the right side plate portion 4 and the spring locking piece 15 provided on the front end side of the side wall portion 20. The tension coil spring 6 is stretched between the spring locking piece 10 provided on the rear end side of the right side plate portion 4 and the spring locking piece 14 provided on the rear end side of the side wall portion 20. It is hung.

The left and right side plate portions 3 and 4 are respectively provided with a pair of damper support rods 5 facing outward.
5, 56, 53 and 54 are provided in a protruding manner. These damper support bars 55, 56, 53, 54 are provided on the side wall portions 21,
Each of these side wall portions 2 is provided through an opening provided in 20.
It is projected to the outer side of 1, 20. The dampers 22, 23, 24, 25 are attached to the outer side surface portions of the side wall portions 21, 20 so as to cover the damper support bars 55, 56, 53, 54 correspondingly. Has been. These dampers 22, 23, 24, 25 are configured by enclosing a liquid material having high viscosity in a bag-shaped member made of a flexible material such as rubber. The damper support rods 55, 56, 53, 54 have the side wall portions 2
1, 20, the above dampers 22, 23, 24, 25
Is supported through.

A floating blocking arm 46 is attached to the chassis 1. The floating blocking arm 46 is a member that is bent and formed in a substantially U-shape, and is attached to each of the side plate portions 3 and 4 so as to extend between the left side plate portion 3 and the right side plate portion 4. The floating blocking arm 46 is supported by the left and right side plate portions 3 and 4 via a support shaft 47, and is rotatable with respect to each of the side plate portions 3 and 4.
The floating blocking arm 46 has a pair of floating blocking pins 49 and 50 protruding outward from the side plates 3 and 4. These floating blocking pins 49 and 50 are formed in the side wall portions 21 and 20 of the support substrate 18, respectively.
It is inserted corresponding to 1,52. The floating blocking arm 46 has a copying pin 48 that engages with the second cam groove 140 provided on the other main surface portion of the cam gear 28.

As shown in FIG. 6, the floating blocking arm 46 has the floating blocking pins 49 and 50 when the cam gear 28 is within a rotation angle range of about 270 ° for moving the disc tray.
Is retained in a substantially V-shaped notch provided on the lower end edge of each of the floating blocking holes 51 and 52. At this time, the chassis 1 is positioned so that its movement with respect to the support substrate 18 is restricted by the floating blocking pins 49, 50 and the floating blocking holes 51, 52, and is in a so-called non-floating state. ..

The floating blocking arm 4
As shown in FIG. 7, the reference numeral 6 denotes the second cam groove 14 when the cam gear 28 is within a rotation angle range of about 90 ° for moving the cartridge pressing plate 27.
By 0, the copying pin 48 is moved toward the center of the cam gear 28, and is rotated as indicated by an arrow O in FIG. 7 to raise the floating blocking pins 49 and 50. Then, these floating prevention pins 49, 50
Is a position where it does not abut the edges of the floating blocking holes 51, 52. When it's time to go, above chassis 1
Can be moved with respect to the support substrate 18, and is in a so-called floating support state.

In the recording / reproducing apparatus having the disc cartridge loading mechanism according to the present invention as described above, to mount the recording / reproducing disc cartridge 201 or the reproduction-only disc cartridge 211, First, as shown in FIGS. 2, 9 and 12, the disc tray is set to the unloading position. At this time, the cartridge pressing plate 27
Is held at a position separated from the chassis bottom plate portion 2, and the cartridge holder 26 is attached to the chassis bottom plate portion 2.
It is said to be parallel to. Further, the cartridge pushing-up member 38 is slid to the rear side with respect to the frame portion 30 together with the sliders 36 and 37, and is located rearward of the front straight portion of the frame portion 30. The cartridge pushing-up member 38 supports the front end edge of the receiving plate 39 by the receiving plate supporting piece 162.

In this state, when the disc cartridges 201 and 211 are placed on the receiving plate 39,
The disk cartridges 201 and 211 are supported with their rear end portions pushed upward by the cartridge pushing member 38. The disc cartridges 201 and 211 are positioned by being sandwiched by the positioning members 40 and 40. The disk cartridges 201 and 211
Is positioned in the depth direction by bringing the front end portion into contact with the rising bent portion provided at the rear end portion of the receiving plate 39.

When the loading motor 110 is driven, the cam gear 28 starts rotating in the direction indicated by the arrow H in FIG. 3 to transfer the disc tray to the rear side, and the disc tray is indicated by the arrow B in FIG. As shown by, it is moved to the rear side. At this time, as shown in FIGS. 3 and 11, the cartridge pushing-up member 38 is provided on the front side of the frame portion 30 by the urging force of the compression coil springs 171 and 172, as shown by an arrow R in FIG. It will be stored in the lower part of the straight line portion. At this time, the disc cartridges 201 and 211 are lowered as indicated by an arrow G in FIG. 3, and are placed on the receiving plate 39 with the entire bottom surface portion abutting against the receiving plate 39.

When the disc tray is further moved to the rear side, the disc cartridges 201 and 211 are inserted into the cartridge holder 26 from the front side as shown in FIGS. 4 and 10. At this time,
The cartridge holder 26 corresponds to the chassis bottom plate portion 2
The disc cartridges 201 and 211 are smoothly inserted into the cartridge holder 26 because they are parallel to the. Then, this disk cartridge 2
In 01 and 211, the shutter members 204 and 2
13 is moved and operated with respect to the cartridges 202 and 212 by the shutter opening piece 158 to open the optical pickup device opening 215 or the magnetic head opening 203 and the optical pickup device opening 215. Covered. At this time, the bent portion 160 of the shutter lid cover piece 128 is fitted into the shutter lid operation hole 207. Until this time, the chassis 1
As shown in FIG. 6, the floating blocking pin 4 is
The movement of the chassis 1 and the disc tray is restricted by the reference numerals 9 and 50, and the chassis 1 and the disc tray are held at predetermined positions with respect to the support substrate 18. Until this time, the magnetic head support arm 4
As shown in FIGS. 15 and 16, 4 is an initial position for holding the magnetic head device 45 in the raised position.

When the disc tray reaches the loading position, the toothless portion 142 faces the rack gear 135 of the disc tray, and even if the cam gear 28 further rotates, the disc tray remains stopped. Maintained. Then, when the cam gear 28 further rotates, the copying arm 119 and the stopper arm 114 are rotated by the first cam groove 112, as shown in FIG.
5, the cartridge pressing plate 27 is rotated to the side close to the chassis bottom plate portion 2 shown by the arrow M in FIG. Further, the stopper arm 114 is rotated in a direction in which the stopper protrusion 116 is fitted into the locked recess 103, as shown by an arrow L in FIG. further,
At this time, as shown in FIG. 7, the floating blocking pins 49, 50 are connected to the floating blocking holes 51, 5 respectively.
The chassis 1 is separated from the edge portion 2 and is in a so-called floating support state by the support substrate 18.

At this time, the disc cartridge 20
As shown in FIGS. 17 and 18, the Nos. 1 and 211 are mounted and mounted on the base unit 57 of the recording / reproducing unit 41, and the loading operation is completed. These disc cartridges 201 and 211 are the same as the cartridge pressing plate 27.
Each of the leaf spring portions 27a elastically presses and supports the base portion 57 side. Further, the receiving plate 39 is pressed by the disc cartridges 201 and 211 and moved downward with respect to the frame portion 30. At this time, the cam gear 28 is stopped.

The cartridges 202 and 212 include the positioning pins 59 and 60 and the positioning protrusions 6 respectively.
It is positioned at a predetermined position on the base part 57 by 1, 62. The magnetic head support arm 44 is
When the recording / playback disc cartridge 201 is mounted, as shown in FIG. 18, the disc cartridge 201 is set to the second position and the playback-only disc cartridge 21 is set.
When 1 is attached, as shown in FIG.
The first position is set. In addition, each of the above disks 20
5, 214 are positioned and mounted on the disc table 43. At this time, the spindle motor can rotate the disks 205 and 214 together with the disk table 43.

In this state, in the optical pickup device 42, the objective lens 68 is opposed to the main surface portion on the other side of the recording / reproducing disk 205 or the reproduction-only disk 214. In addition, the optical pickup device 42 includes the disks 205,
The objective lens 68 can be moved over the inner and outer circumferences of the disks 205 and 214 while the objective lens 68 is opposed to the disk 214. The optical pickup device 42 is capable of irradiating each of the disks 205 and 214 with a light beam from the other main surface side.

By operating the spindle motor, the optical pickup device 42, and the magnetic head device 45, the recording / reproducing disk 205 is also used.
It is possible to write an information signal to. That is, the recording / playback disc 205 is rotated, and the signal recording layer of the recording / playback disc 205 is focused by the optical pickup device 42 to irradiate the luminous flux to heat the illuminated area, which is then heated. The magnetic head device 45 applies an external magnetic field to the portion to write the information signal. In this state, the information signal can be read from the reproduction-only disc 214. That is, the reproduction-only disc 214 is rotated, and the optical pickup device 42 collects and irradiates the luminous flux on the reflective layer.
The information signal is read by detecting the reflected light flux of the light flux.

Then, in order to take out each of the disc cartridges mounted on the disc cartridge loading mechanism from the disc cartridge loading mechanism as described above, the loading motor 110 is driven in the reverse direction of the loading operation described above. The cam gear 28 is rotated in the direction in which the disc tray is transported to the front side, as indicated by arrow E in FIG. Then, first, by rotating the cam gear 28 through 90 °, as shown in FIG.
As indicated by the middle arrow J, the stopper arm 114 and the copying arm 119 are returned to the initial state.

As shown by an arrow K in FIG. 4, the cartridge pressing plate 27 is rotated in a direction away from the chassis bottom plate portion 2 to move the cartridge holder 26 to the upper side of the chassis bottom plate portion 2. .. At this time, the disc cartridges 201 and 211 are placed on the receiving plate 39 apart from the base 57 of the recording / reproducing unit 41. The receiving plate 39 returns to the initial position with respect to the frame portion 30. Further, the magnetic head support arm 44 returns to the initial position. Further, the floating blocking pins 49, 50 are lowered in the floating blocking holes 51, 52, abutted and supported on the edges of the floating blocking holes 51, 52, and the supporting substrate of the chassis 1 is supported. Restrict movement to 18.

When the cam gear 28 is further rotated, the disc tray is moved forward as shown by an arrow A in FIG. 3, as shown in FIG. At this time, the disk cartridges 201, 201
11 is conveyed to the front side by the receiving plate 39.
In these disc cartridges 201 and 211,
The bent portion 160 of the shutter lid piece 128 closes the shutter members 204 and 213.
After the shutter members 204 and 213 are closed, the disk cartridges 201 and 211 are moved so as to be pulled out forward from between the shutter closing lid pieces 128 and 128.

Further, the cam gear 28 is rotated, and as shown in FIG. 2, the disc tray is moved to the arrow P in FIG.
As shown by, when the cartridge is moved forward and reaches the unloading position, the cartridge pushing-up member 3
8 is slid rearward with respect to the frame portion 30, and the disc cartridges 201 and 211 are indicated by arrows D in FIG.
As shown in, the rear end side part can be pushed up. The cam gear 28 is stopped. At this time, the disc cartridges 201 and 211 can be removed from the disc tray.

[0084]

As described above, in the disc cartridge loading mechanism according to the present invention, in the disc cartridge placed on the receiving plate of the disc tray, the disc tray becomes the attaching / detaching operation position of the disc cartridge. At least a part of the slider member is pushed upward by the slider member movably attached to the disc tray while the positioning member is movably attached to the disc tray and is moved in conjunction with the slider member. Horizontally positioned.

Further, in this disc cartridge loading mechanism, when the slider member is pushing up at least a part of the disc cartridge placed on the receiving plate, the downward movement of the receiving plate is restricted. In such a case, when the disc tray is at the disc cartridge attaching / detaching operation position, the receiving plate is stabilized, and the disc cartridge attaching / detaching operation can be smoothly performed.

That is, according to the present invention, when the disc cartridge is loaded, the recording disc and the cartridge accommodating the recording disc can be precisely positioned, and the loading operation is easy, smooth, and light. It is possible to provide a disc cartridge loading mechanism that is designed to be capable of performing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a main part of a recording and reproducing apparatus configured using a disc cartridge loading mechanism according to the present invention.

FIG. 2 is a right side view showing an unloading state of the disc cartridge loading mechanism.

FIG. 3 is a right side view showing a state immediately after starting the loading of the disc cartridge loading mechanism.

FIG. 4 is a right side view showing a state during the loading of the disc cartridge loading mechanism.

FIG. 5 is a right side view showing a state where loading of the disc cartridge loading mechanism is completed.

FIG. 6 is a left side view showing a state during the loading of the disc cartridge loading mechanism.

FIG. 7 is a left side view showing a state where loading of the disc cartridge loading mechanism is completed.

FIG. 8 is a perspective view showing a shape of a tray feed gear that constitutes the disc cartridge loading mechanism.

FIG. 9 is a plan view of relevant parts showing an unloading state of the disc cartridge loading mechanism.

FIG. 10 is a plan view showing a partially broken state of the disc cartridge loading mechanism during loading.

FIG. 11 is a bottom view of essential parts showing a state in which the disc cartridge loading mechanism is being loaded.

FIG. 12 is a bottom view of essential parts showing an unloading state of the disc cartridge loading mechanism.

FIG. 13 is a plan view showing a configuration of a recording / reproducing unit of the recording / reproducing apparatus.

FIG. 14 is a plan view showing a state in which a disc cartridge is mounted on the recording / reproducing unit.

FIG. 15 is a side view showing a configuration of the recording / reproducing unit and a disc cartridge mounted in the recording / reproducing unit.

FIG. 16 is a side view showing a state in which the disc cartridge is being mounted in the recording / reproducing unit.

FIG. 17 is a side view showing a state in which a reproduction-only disc cartridge is mounted in the recording / reproducing unit.

FIG. 18 is a side view showing a state in which a recording / reproducing disc cartridge is mounted in the recording / reproducing unit.

FIG. 19 is a perspective view showing a configuration of the recording / reproducing disk cartridge.

FIG. 20 is a perspective view of the recording / reproducing disk cartridge as viewed from the bottom side.

FIG. 21 is a perspective view showing a configuration of the reproduction-only disc cartridge.

FIG. 22 is a perspective view of the reproduction-only disc cartridge as seen from the bottom side.

[Explanation of symbols]

 30 ..... Frame parts 36, 37 ..... Slider 38 .................. Pushing member 39 .. ... Receiving plate 40 ...

Claims (2)

[Claims] 1. A receiving plate on which a disk cartridge is placed, and a frame part for supporting the receiving plate so as to be movable up and down,
A disc tray that is operated to move between a position where the disc cartridge is located above the recording / reproducing unit and an attachment / detachment operation position of the disc cartridge; A slider member that pushes up at least a part of the disc cartridge mounted on the receiving plate to an upper side at the attachment / detachment operation position, and is movably attached to the disc tray. A disc cartridge loading mechanism comprising: a positioning member for positioning the disc cartridge placed on the receiving plate in the horizontal direction in association with the slider member when the cartridge is in the loading / unloading operation position. 2. The slider member regulates the downward movement of the receiving plate with respect to the frame portion when pushing up at least a part of the disk cartridge mounted on the receiving plate. 1. The disk cartridge loading mechanism according to 1.