JPH0831071A - Disk changer - Google Patents

Abstract

PURPOSE:To miniaturize and simplify a device structure while sufficiently keeping a transfer stroke for a disk 201. CONSTITUTION:A plurality of disk trays 67 rotatably supported by the same shaft 58 are rotated. Then, the disk 201 loaded on each disk tray 67 is selectively transferred to the stock position of an outer casing, the eject position of the outside of the outer casing or a play position opposed to a pickup device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer device in which a plurality of recording discs are loaded and information signals are recorded or reproduced by selectively using these recording discs.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a disc changer device in which a plurality of recording discs such as optical discs and magneto-optical discs are loaded, and an information signal is recorded or reproduced on one recording disc selected from these recording discs. In this disc changer device, by sequentially selecting one recording disc from the plurality of loaded recording discs, it is possible to continuously record or reproduce information signals on the plurality of recording discs.

Such a disc changer device has a recording / reproducing section, a plurality of disc trays for respectively holding and holding one recording disc, and a transport mechanism for selectively transporting these disc trays. There is.

The recording / reproducing section holds a rotation operation mechanism for holding (chucking) the recording disk and rotating it.
A pickup device for writing or reading an information signal to or from the recording disk being rotated by the rotation operation mechanism is configured.

Each of the disc trays is supported by a supporting mechanism such as a guide rail, and can be moved independently of each other. These disc trays have an eject position at which the held recording disc is located outside the outer casing of the disc changer device, a stock position at which the recording disc is stored in the outer casing, and the recording disc as described above. The recording / playback unit can be moved to and from a play position where chucking is possible.

The transport mechanism selects one disc tray from the disc trays, and moves the disc tray between the eject position, the stock position and the play position.

[0007]

By the way, in the disc changer device as described above, a guide rail such as a guide rail for movably supporting the disc trays in the eject position, the stock position and the play position is provided. By having the support mechanism, the device configuration becomes large and complicated. Further, in order to realize the smooth movement operation of each of the disc trays, it is necessary to make the dimensions of the supporting mechanism and the assembling highly accurate, which makes it difficult to assemble and manufacture the disc changer device.

The selection of the disc tray by the transport mechanism is performed by providing a moving operation mechanism for integrally moving the disc trays in a direction orthogonal to the transport direction of the transport mechanism, for example, in the vertical direction. This is performed by moving each disc tray with respect to the transport mechanism.

In such a moving operation mechanism, as the number of disc trays increases, the mechanism becomes larger and more complicated, and the disc changer device becomes larger.
It is complicated.

Further, the moving operation mechanism is required to stop each of the disc trays at a predetermined position where the disc trays can be sequentially transported. As described above, in order to stop each of the disc trays at a predetermined position, it is necessary to use a sensor for position detection, or take a measure such as providing a lock mechanism separate from the movement operation mechanism. This complicates the configuration of the disc changer device. Therefore, the present invention is proposed in view of the above-mentioned actual circumstances, and a plurality of recording discs are loaded, and while it is possible to record or reproduce selective information signals on these recording discs,
An object of the present invention is to provide a disc changer device having a simplified structure and a reduced size.

[0011]

In order to solve the above-mentioned problems and achieve the object, a disk changer device according to the present invention is rotatably supported by mutually coaxial supporting shafts, and one recording device is provided. A plurality of disc trays for holding discs, an eject position at which one of these disc trays holds the recording discs outside the outer casing, and the recording discs are arranged inside the outer casing. A stock position, and a rotation operation mechanism for rotating the recording disk between a play position in which the recording disk corresponds to the recording / reproducing section in the outer casing, and each disk tray as the spindle. A moving operation mechanism that is moved along the direction to move these disc trays with respect to the rotating operation mechanism to select one disc tray by the rotating operation mechanism. It is one that is equipped with a.

According to the present invention, in the disc changer device, the movement operating mechanism has a cam body whose axial direction is parallel to a support shaft supporting each of the disc trays and which is rotationally operated about the shaft. A holder for holding each disc tray is engaged with the cam portion of the cam body, and the cam portion is formed in a plane shape orthogonal to the axis of the cam body. Spirals formed in a shape that is at least a number corresponding to the number of the disk trays arranged in the direction and a part of a spiral shape around the axis of the cam body, and that successively connects the respective planar shape parts. It is supposed to be formed having a shaped portion.

Further, according to the present invention, in the above-mentioned disc changer device, the rotating operation mechanism operates the chucking mechanism of the recording / reproducing unit when one disc tray is conveyed to the play position. The chucking operation is performed on the recording disc held by the disc tray.

[0014]

In the disc changer device according to the present invention, one of a plurality of disc trays, each of which is rotatably supported and holds one recording disc, is rotated between the eject position, the stock position and the play position. A rotating operation mechanism for operating and a moving operation mechanism for moving and operating each of the disc trays in a direction along the support shafts of the disc trays to select one disc tray by the rotating operation mechanism are provided. So, while having a simple structure,
It is possible to selectively record or reproduce information signals with respect to a plurality of recording discs held on the respective disc trays.

Further, in the disc changer device, the moving operation mechanism has a cam body whose axial direction is parallel to a support shaft supporting each of the disc trays and which is rotationally operated around the shaft. A holding body holding each of the disc trays is engaged with the cam portion, and the cam portion is formed in a plane shape orthogonal to the axis of the cam body and arranged in the axial direction of the cam body. And at least a number of plane-shaped portions corresponding to the number of the disk trays and a spiral-shaped portion formed in a shape that is a part of a spiral shape around the axis of the cam body and sequentially connecting the respective plane-shaped portions. If the holding member is formed to have the holding member, the turning operation mechanism turns the disc tray when the holding member is engaged with the planar portion. Stop position of cam body Without maintaining the high accuracy, it is possible to maintain the stop position of each disc tray with high accuracy.

Further, in the above-mentioned disc changer device, the rotation operation mechanism operates the chucking mechanism of the recording / reproducing section when one disc tray is conveyed to the play position, and the disc tray is held by the rotation mechanism. When the chucking operation is performed on the recording disk being operated, the rotation operation of the disk tray and the chucking operation of the recording disk can be continuously performed by the driving force of one motor. .

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below in the following order with reference to the drawings. [1] Outline of disc changer device [2] Configuration of disc stocker [3] Configuration of recording / reproducing unit [4] Configuration of movement operation mechanism (elevator mechanism) [5] Configuration of rotation operation mechanism [6] Disc changer device Operation [1] Overview of Disc Changer Device A disc changer device according to the present invention is a device in which a plurality of recording discs are loaded and an information signal is recorded or reproduced on one recording disc selected from these recording discs. Is.

The recording disk is a so-called optical disk, magneto-optical disk, or magnetic disk, and has a disk-shaped substrate portion and a recording layer portion formed on the main surface portion of the substrate portion. Has been done. The recording layer portion is preliminarily written with an information signal, or is formed so that the information signal can be written. As shown in FIG. 1, this recording disk has a chucking hole 202 in the central portion of the substrate portion.

As shown in FIG. 1, this disc changer device has a chassis 1. On the chassis 1, a recording / reproducing unit, a plurality of disc trays 67, 67, 67 rotatably supported, and a movement for integrally moving the disc trays 67, 67, 67 in a vertical direction. An operating mechanism (elevator mechanism),
A rotation operation mechanism for rotating one of the disc trays 67, 67, 67 is provided.

Further, as shown in FIGS. 2 and 6, an outer casing 91 formed so as to cover the entire disc changer device is disposed on the chassis 1.

As shown in FIG. 2, the rotating operation mechanism is
One of the disc trays 67, 67, 67,
The recording disc 201 held by the disc tray 67
Is an eject position outside the outer casing 91, a stock position where the recording disc 201 is inside the outer casing 91, and a position where the recording disc 201 corresponds to the recording / reproducing unit. Rotate to the play position.

The moving operation mechanism (elevator mechanism) connects the disc trays 67, 67, 67 to the tray support shaft 5 as shown by arrows E and F in FIG.
8 along with the disk tray 6
7, 67, 67 are moved with respect to the rotation operation mechanism to select one disc tray 67 by this rotation operation mechanism.

Further, the disc changer device has a control circuit for controlling the recording / reproducing section, the rotating operation mechanism and the moving operation mechanism. This control circuit is based on an operation signal input from the outside through an operation section and detection signals from a plurality of sensors provided in the outer casing 91, the recording / reproducing section, the rotation operation mechanism, and the rotation operation mechanism. Control the movement operation mechanism. The sensor detects the position of each disc tray 67, the presence / absence of a recording disc on the disc tray 67, and the recording disc 201 for the recording / reproducing unit.
It is to detect the completion of mounting of the device.

This disc changer device is constructed so that the lateral width of the outer casing 91 is within 225 mm when the diameter of the recording disc 201 is 120 mm.

[2] Configuration of Disc Stocker Each disc tray 67 on the chassis 1
67 and 67 form a disk stocker that houses and holds a plurality of recording disks 201.

The plurality of disc trays 67, 67, 6
Each of the units 7 is configured to mount and hold one recording disk 201. That is, these disc trays 67 are formed in a substantially flat plate shape, and have a circular disc mounting recess 71 in a substantially central portion of the upper surface portion. The disc mounting recess 71 is provided in the recording disc 2
The recording disk 201 is formed to have a size corresponding to the size of 01, and the recording disk 201 is inserted and mounted. A small-diameter disk mounting recess 72 is formed in the center of the bottom surface of the disk mounting recess 71. The small-diameter disk mounting recess 72 is the disk mounting recess 7 described above.
A recording disk (not shown) having a diameter smaller than that of the recording disk 201 is fitted in and mounted on the recording disk 201.

Each disc tray 67 has a recording / reproducing opening 73 in the disc mounting recess 71. The recording / reproducing opening 73 is provided in the disc table 12 and the optical pickup device 10 of the recording / reproducing unit described later.
Is to face the recording disc 201 fitted and mounted in the disc mounting recess 71 from the lower side of the disc tray 67.

Each of the disc trays 67 has a spindle insertion hole 68 at one side portion. This support shaft insertion hole 68
Are formed so that the axial direction is perpendicular to the main surface portion of the disc tray 67. Each of the disc trays 67, 67, 67 is rotatably supported via a coaxial support shaft, that is, the same tray support shaft 58. The tray support shaft 58 is erected on the chassis 1 vertically to the chassis 1. These disc trays 67 are rotatable around the tray support shafts 58 by inserting the tray support shafts 58 into the support shaft insertion holes 68. The disc trays 67 are also movable along the tray support shaft 58 in the axial direction of the tray support shaft 58.

Each of the disc trays 67 has, at the trailing edge side thereof, an engagement defective portion 69 into which a turning arm 41 of a turning operation mechanism described later enters. This engagement defect portion 6
Reference numeral 9 denotes a notch-shaped defective portion that is open toward the support shaft insertion hole 68, and is also open to the upper side and the lower side.

As shown in FIGS. 1 and 8, the rotating arm 41 is erected at a position in the vicinity of the tray supporting shaft 58 on the chassis 1 so as to be rotatable about its axis and erected vertically. It extends horizontally from the upper end side of 93, that is, extends parallel to the chassis 1. The rotation arm 41 is rotated around the axis of the rotation support shaft 93 by rotating the rotation support shaft 93 by a rotation operation mechanism described later. The rotating arm 41 is inserted into the engagement defective portion 69 from the tray support shaft 58 side.

The disc stocker has a tray holder 62 which is a holder for holding the disc trays 67, 67, 67.

The tray holder 62 is formed in a substantially flat plate shape, and the tray support shaft 58 is inserted through a support hole 65 provided at one side portion, and the tray support shaft 58 is supported along the tray support shaft 58. It is movable in the axial direction of the shaft 58. On the other side of the tray holder 62, a side wall portion having a cylindrical shape is erected. Support groove portions 66, 66, 66 into which the other side edge portions of the disc trays 67, 67, 67 are correspondingly fitted are formed on the inner side surface portion of the side wall portion. The side wall portion and the support groove portions 66, 6
Reference numerals 6 and 66 have a cylindrical shape with the center of curvature coinciding with the central axis of the support hole 65, and when the disk trays 67 are rotated around the tray support shaft 58 inserted into the support hole 65. The other side edge of the disc tray 67 is guided.

A tray holder cover plate 75 is attached to the upper portion of the tray holder 62. The tray holder cover plate 75 is formed in a flat plate shape, one side of which is attached to an upper end of a support wall projecting from one side of the tray holder 62, and the other side of which is the other side of the tray holder 62. It is attached to the upper end of the side wall on the side. Screw insertion holes 78, 7 into which screws to be screwed into the tray holder 62 are inserted, on both sides of the tray holder cover plate 75.
9 is provided. Also, this tray holder cover plate 75
The insertion hole 7 through which the tray support shaft 58 is inserted.
6 is provided.

Each of the disc trays 67, 67, 67
Is the tray holder 62 and the tray holder cover plate 75.
It is located between and.

A top plate 80 is attached to the upper end of the tray support shaft 58. This top plate 80
Is formed in a horizontally long flat plate shape and is fixed to the upper end of the tray support shaft 58, and the upper end of a pillar 59 planted on one side of the chassis 1 and the other side of the chassis 1. It is fixed to the upper ends of a pair of columns 60, 61 planted on the side. Screw insertion holes 81, through which screws to be screwed into the tray support shaft 58 and the upper ends of the columns 59, 60, 61 are inserted in both side portions of the top plate 80.
82, 83, 84 are drilled.

The top plate 80 has an upper hooking cylinder 85.
Is provided so as to protrude downward, that is, toward the chassis 1 side. As shown in FIG. 8, the upper hooking column 85 has a through hole 77 formed in the tray holder cover plate 75.
Has been inserted into. By inserting the upper side retaining cylinder 85 into the through hole 77, the tray holder cover plate 75 and the tray holder 62 are attached to the tray supporting shaft 5.
It is prevented from rotating around 8.

The upper hooking cylinder 85 is located above the engagement defect portion 69 of the disc tray 67 in the stock position. That is, the upper retaining column 85 has a lower end portion close to the upper surface portion of the tip end side portion of the rotating arm 41 when the disc tray 67 is in the stock position. The tip end side portion of the rotating arm 41 serves as a contact engagement portion 86.

On the chassis 1, the lower hooking cylinder 5 is located below the upper hooking cylinder 85.
6 is projected. The lower latching cylinder 56 is provided on the lower surface of the contact engagement portion 86 of the rotating arm 41 when the disc tray 67 is in the stock position.
The tops are close together. That is, a space between the lower end of the upper hooking cylinder 85 and the upper end of the lower hooking cylinder 56 is large enough to allow the contact engagement portion 86 of the rotating arm 41 to pass in the lateral direction, In other words, the disc tray 67 forms a gap portion that allows only one disc tray 67 to pass therethrough.

The disc tray 67 above the disc tray 67 having a height corresponding to the rotating arm 41 is
The upper locking column 85 is inserted into the engagement defect portion 69, and the upper locking column 85 prevents rotation around the tray support shaft 58. Further, the disc tray 67 below the disc tray 67 having a height corresponding to the rotating arm 41 has the lower latching column 56 inserted into the engagement defect portion 69, and the lower latching column 56 is inserted. Stop cylinder 5
By 6 the rotation around the tray support shaft 58 is prevented.

[3] Structure of Recording / Reproducing Section The recording / reproducing section has a recording / reproducing section chassis 3 supported on the chassis 1 via a recording / reproducing section supporting frame 4. The recording / reproducing unit chassis 3 is located on one rear side portion of the chassis 1. The recording / reproducing unit support frame 4 is provided with respect to the chassis 1 as a pair of rotation support shafts 5, 5.
It is rotatably supported via 6. These rotation support shafts 5 and 6 are provided on one side portion of the recording / reproducing unit support frame 4 so as to project in the front and rear directions. The recording / reproducing unit support frame 4 has a portion on the other side, which is formed as a central portion side of the chassis 1, in an ascending / descending direction that is a contact / separation direction with respect to the chassis 1, as indicated by arrows G and H in FIG. It is said to be movable.

On the other side surface of the recording / reproducing section support frame 4,
An engagement pin 7 that engages with the rotation operation mechanism is planted toward the center of the chassis 1 so as to be rotated by a rotation operation mechanism described later.

The recording / reproducing unit chassis 3 is attached to the upper surface of the recording / reproducing unit support frame 4 via a plurality of dampers 8. In this recording / reproducing unit chassis 3,
A spindle motor 13 is attached. The drive shaft of the spindle motor 13 projects upward from the recording / reproducing chassis 3 and is used for the disc table 12
Is attached. This disk table 12 is
It is formed in a substantially disc shape and has a truncated cone-shaped centering protrusion in the center of the upper surface portion. This disk table 1
When the central portion of the recording disc 201 is placed on the upper surface of the recording disc 201, the centering protrusion is fitted into and engaged with the chucking hole 202 of the recording disc 201 to position the recording disc 201. A magnet is built in the centering protrusion of the disk table 12.

An optical pickup device 10 is movably attached to the recording / reproducing unit chassis 3.

This optical pickup device includes an optical block, a light source such as a laser diode built in the optical block, a collimator lens for guiding a light beam from the light source and condensing the light beam on the outer side of the optical block, and an objective. It has various optical devices such as the lens 11 and a photodetector such as a photodiode for detecting the light flux returned to the optical block through these optical devices, and can write or read information signals to or from the recording disc 201. Is configured.

In the optical pickup device 10, the optical block is supported by a guide shaft 19 provided in the recording / reproducing unit chassis 3, and the objective lens 11 is used.
Direction of the light flux toward the upper side, the direction along the guide shaft 19, that is, the disc table 12
It is possible to move and move in and out of the direction. A drive gear 14 and transmission gears 15 and 16 for movably operating the optical pickup device 10 are rotatably arranged on the recording / reproducing unit chassis 3. The drive gear 14 is driven and operated by a motor (not shown) attached to the recording / reproducing unit chassis 3 to move and operate the optical pickup device 10 via the transmission gears 15 and 16.

A chucking arm 17 is projectingly provided on the chassis 1. The chucking arm 17 has a base end portion supported by the other side portion on the rear side of the chassis 1, and a tip end side of the chucking arm 17.
It is located above 2. This chucking arm 1
A chucking plate 18 formed in a disk shape is rotatably attached to the tip end side of 7. The chucking plate 18 faces the disc table 12.

When the central portion of the recording disc 201 is located between the chucking plate 18 and the disc table 12, the recording / reproducing section support frame 4 is rotated to move the disc table. When 12 is moved in the upward direction indicated by arrow G in FIG. 1, it is attracted by the magnet in the centering protrusion of the disc table 12, and cooperates with the disc table 12 to chuck the central portion of the recording disc 201. King (sandwich).
The recording disk 201 sandwiched between the disk table 12 and the chucking plate 18 in this manner.
When the disk table 12 is rotationally operated, the disk table 12 and the chucking plate 18 are rotationally operated following the disk table 12.

When the disc tray 67 is brought to the play position by the rotating operation mechanism, the central portion of the recording disc 201 placed and held is positioned above the disc table 12. At this time, the disc tray 67 is inserted from the front side between the recording / reproducing unit chassis 3 and the tip side portion of the chucking arm 17.

The disc tray 67 in the play position is positioned by the recording / reproducing unit chassis 3 when the recording disc 201 is chucked by the disc table 12 and the chucking plate 18. That is, a pair of positioning holes 70, 70 are formed in each of the disc trays 67 on both sides of the disc mounting recess 71. A pair of positioning pins 113 and 114 are provided on the recording / reproducing unit chassis 3 so as to project therefrom. These positioning pins 113 and 114 are used to position the positioning lights 70 and 70 when the disk table 12 is moved upward to chuck the recording disk 201.
Then, the disc tray 67 is positioned.

[4] Structure of moving operation mechanism (elevator mechanism) In the elevator mechanism which is the moving operation mechanism, the tray holder 62 holding each of the disc trays 67, 67, 67 is moved in the direction of contact with and separation from the chassis 1. This is a mechanism for vertically moving up and down.

As shown in FIGS. 1 and 3, this moving operation mechanism has a pair of cam bodies 50, 5 formed in a substantially cylindrical shape.
Has 0. One of the cam bodies 50 is the chassis 1 described above.
It is located on one side and is erected so as to be rotatable around the axis. The other cam body 50 is located on the other side of the chassis 1 and is erected so as to be rotatable about its axis. That is, the axial direction of these cam bodies 50 is parallel to the tray support shaft 58 that supports the disc trays 67, 67, 67.

Each of the cam bodies 50 has a gear portion 51 at the lower end portion. The cam bodies 50, 50 are rotated by an elevating motor 42 arranged on the chassis 1.

That is, a drive pulley 43 is attached to the drive shaft of the lifting motor 42. An endless drive belt 44 is wound around the drive pulley 43 between the driven pulley 45 rotatably supported on the chassis 1. A first transmission gear 46 is integrally formed on the driven pulley 45. The first transmission gear 46 meshes with a second transmission gear 47 rotatably arranged on the chassis 1. A third transmission gear 48 is integrally formed with the second transmission gear 47. The third transmission gear 48 meshes with a fourth transmission gear 49 rotatably arranged on the chassis 1. The fourth transmission gear 49 meshes with the gear portion 51 of the cam body 50 arranged on the other side of the chassis 1.

Further, the fourth transmission gear 49 has a fifth transmission gear 5 rotatably arranged on the chassis 1.
3 is in mesh. A timing belt gear portion 54 is integrally formed with the fifth transmission gear 53.
A timing belt 55 is wound around the timing belt gear portion 54 between the timing belt gear portion 54 and the gear portion 51 of the cam body 50 disposed on one side of the chassis 1.

The elevating motor 42 is controlled by the control circuit to rotate in the forward rotation direction and the reverse rotation direction.

On the outer peripheral surface of these cam bodies 50, 50,
A cam groove 52, which is a cam portion, is formed. The cam groove 52, as shown in FIGS.
The cam body 5 formed in a plane shape orthogonal to the axis of 0
At least a number of planar-shaped portions 52a corresponding to the number of the disk trays 67 arranged in the axial direction of 0, and the planar shapes formed in a shape that is a part of a spiral shape around the axis of the cam body 50. It is formed by having a spiral-shaped portion 52b that successively connects the portions 52a. That is, the cam groove 52 is formed as a spiral groove as a whole, and the plane-shaped portions 52a and the spiral-shaped portions 52a are alternately arranged. A pair of support pins 63 and 64 provided on the tray holder 62 are fitted and engaged with the cam grooves 52 and 52 of the cam bodies 50 and 50, respectively. One of the support pins 63
Are planted horizontally from one side portion of the tray holder 62. The other support pin 64 is horizontally arranged from the other side portion of the tray holder 62.

Therefore, in the tray holder 62, when the elevating motor 42 is driven to rotate in the forward or reverse direction as shown by the arrow N or the arrow O in FIG.
As shown by an arrow E or an arrow F in FIGS. 1, 3, and 8, the moving operation (elevating operation) is performed to the upper side or the lower side.

The lifting operation of the tray holder 62 by this elevator mechanism is performed when all the disk trays 67 are in the stock position. At this time,
The rotating arm 41 includes the disc trays 67, 6
The engaging defective portions 69, 69, 69 of 7, 67 are relatively moved in the vertical direction between the engaging defective portions 69, 69, 69, and sequentially enter the engaging defective portions 69, 69, 69.

At this time, when the support pins 63, 64 are engaged with the plane-shaped portions 52a of the cam grooves 52, the tray holder 62 moves up and down even if the cam bodies 50 rotate. Not operated. In this way, the support pins 63, 64 have the planar shape portions 52 a of the cam grooves 52.
, The tray holder 62 sets any one of the disc trays 67 at a height position corresponding to the rotating arm 41.

That is, in this elevator mechanism, the support pins 63 and 64 are engaged with the plane-shaped portions 52a of the cam grooves 52 without performing highly accurate control of the stop position of the lift motor 42. If the elevating motor 42 is stopped in this state, any one of the disc trays 67 can be accurately stopped at the height position corresponding to the rotating arm 41.

The disc tray 67 positioned at the height corresponding to the rotating arm 41 is selected as the disc tray 67 which is rotated by the rotating operation mechanism.

[5] Structure of Rotation Operation Mechanism The rotation operation mechanism rotates the rotation arm 41 to set the disc tray 67 at a height position corresponding to the rotation arm 41, that is, This is a mechanism for rotating the selected disc tray 67. As shown in FIG. 2, this rotation operation mechanism rotates the selected disc tray 67 between the eject position, the stock position, and the play position.

Further, this rotating operation mechanism, when the selected disc tray 67 is conveyed to the play position,
The chucking mechanism of the recording / reproducing unit is operated, that is, the recording / reproducing unit support frame 4 is rotated to operate the chucking plate 18 and the disc table for the recording disc 201 held by the disc tray 67. The chucking operation by 12 is performed.

As shown in FIGS. 1 and 4, this rotation operation mechanism has a loading motor 23 which is controlled by the control circuit and is rotationally driven in the forward rotation direction and the reverse rotation direction. An endless drive belt 25 is wound around a drive pulley 24 attached to the drive shaft of the loading motor 23 and a driven pulley 26 rotatably arranged on the chassis 1. A first transmission gear 27 is integrally formed with the driven pulley 26. The first transmission gear 27 meshes with the second transmission gear 28. A third transmission gear 29 is integrally formed with the second transmission gear 28.

Further, the third transmission gear 29 is the same as that shown in FIG.
As shown in FIG. 9, it meshes with the outer peripheral gear portion 102 of the first cam gear 30 rotatably arranged on the chassis 1 via the support shaft 89. This first cam gear 30
Has a support shaft hole 110 through which the support shaft 89 is inserted. The first cam gear 30 has a cam groove 87 formed on the lower surface and a drive arm 31 attached to the upper surface. When the loading motor 23 is rotationally driven, the first cam gear 30 is always rotated according to the rotational driving of the loading motor 23.

The drive arm 31 has a support hole 109 into which the support shaft 89 is inserted at the base end side, and first and second drive pins 95 and 96 at the tip end side. These drive pins 95 and 96 are inserted into through holes 97 and 98 formed in the first cam gear 30, and the first cam gear 3
It is projected below 0. The first drive pin 95 is formed as a substantially rectangular protrusion whose lower end is a horizontal end. The lower end side of the second drive pin 96 is a tapered protrusion.

The drive arm 31 is moved by the leaf spring 32 attached to the first cam gear 30 in the direction in which the drive pins 95 and 96 are projected downward as shown by the arrow M in FIG. Elastically biased. Leaf spring 3
2 is that the screw 101 inserted through the screw insertion hole 100 provided on the base end side is screwed into the screw hole 99 on the upper surface portion of the first cam gear 30 so that the base end side is the first end. Is fixed to the upper surface of the cam gear 30. This leaf spring 32
Urges the drive arm 31 by the tip side.

The lower side of the first cam gear 30, that is, the first cam gear 30 and the chassis 1
A second cam gear 33 is rotatably provided between the first and second cam gears. The second cam gear 33 has a support shaft hole 111 at the center thereof through which the support shaft 89 is inserted.
It is rotatably supported by inserting the support shaft 89 into the shaft 1. The second cam gear 33 is the same as the first cam gear 33.
The cam gear 30 and the cam gear 30 have substantially the same diameter.

The second cam gear 33 has an engagement hole 104 into which the tip side of the first drive pin 95 is fitted and engaged. Further, an arcuate slit 106 is formed in the second cam gear 33. This slit 10
6, the second drive pin 96 is inserted,
The first cam gear 3 with respect to the second cam gear 33.
It is formed in an arc shape corresponding to the movement locus of the second drive pin 96 when 0 rotates. Further, the upper surface of the second cam gear 33 has an arc shape corresponding to the movement locus of the first drive pin 95 when the first cam gear 30 rotates with respect to the second cam gear 33. However, the support ridge 105 is formed. This support ridge 1
Reference numeral 05 is formed along the slit 106.

The slit 10 is formed on the chassis 1.
A restriction pin 112 is provided so as to correspond to No. 6. The regulation pin 112 is fitted in the slit 106 and regulates the range of rotation angle of the second cam gear 33 with respect to the chassis 1.

Further, the upper surface of the second cam gear 33 is provided with a cam groove 107 formed by a pair of protrusions 108, 108 which are substantially parallel to each other. The cam groove 107 is formed as a portion between the ridges 108, 108.

An outer peripheral gear portion 103 is formed on the outer peripheral edge portion of the second cam gear 33. The gear portion 40 formed on the proximal end side of the rotation support shaft 93 that supports the rotating arm 41 meshes with the outer peripheral gear portion 103.

Between the first and second cam gears 30 and 33, a part of a loading arm 34 rotatably supporting the support shaft portion 35 on the base end side on the chassis 1 is inserted. The loading arm 34 has a first copying pin 36 in a portion facing the lower surface of the first cam gear 30, and a second copying pin 36 in a portion facing the upper surface of the second cam gear 33. It has a pin 94.

The first copying pin 36 is fitted and engaged with the cam groove 87 of the first cam gear 30. This first
The cam groove 87 of the cam gear 30 of the
A large-diameter circular arc portion 87a along the outer peripheral side of the first cam gear 30, and a small-diameter circular arc portion 87c along the inner peripheral side of the first cam gear 30
These large-diameter arcuate portion 87a and small-diameter arcuate portion 87c
And a connecting portion 87b that connects the two with each other, and is formed in a series of curved shapes.

The second copying pin 94 engages with the cam groove 107 of the second cam gear 33 when the rotating arm 41 is in the play position of the selected disc tray 67.

The tip of the loading arm 34 is
It has an arcuate shape centered on the support shaft portion 35, and serves as a gear portion 90. A first loading gear 37 rotatably arranged on the chassis 1 meshes with the gear portion 90. A second loading gear 38 is integrally formed with the first loading gear 37. The second loading gear 38 meshes with a gear portion of a loading cam 39 rotatably arranged on the chassis 1. This loading cam 3
9 is formed in a cylindrical shape, and a gear portion with which the second loading gear 37 meshes is formed on the lower end side, and
A spiral cam groove is formed on the outer peripheral surface portion. The engaging pin 7 of the recording / reproducing unit support frame 4 is fitted and engaged in the cam groove of the loading cam 39.

In this rotation operation mechanism, as shown in FIG. 6, when all the disk trays 67 are in the stock position, the loading motor 23 moves in the unloading direction indicated by the arrow U ₁ in FIG. When rotationally driven, the first cam gear 30 is rotationally operated in the unloading direction indicated by arrow U ₂ in FIG. Then
The second cam gear 33 is rotatably operated by following the first cam gear 30 via the first drive pin 95,
The rotating arm 41 is rotated in the unloading direction. The rotating arm 41 rotates the selected disc tray 67 to the eject position on the outer side of the outer casing 91, as indicated by an arrow A in FIGS. 2 and 7. At this time, the selected disc tray 67
7 is moved to the outside of the outer casing 91 through a slit 92 formed in the front panel portion of the outer casing 91, as shown in FIG. The fact that the disc tray 67 is at the eject position is detected by a sensor, and the loading motor 2 is passed through the control circuit.
Stop 3.

As described above, with respect to the disc tray 67 at the eject position, the recording disc 2 is
01 can be loaded and unloaded.

As described above, while the disc tray 67 is in the stock position and the eject position, the first copying pin 36 is provided with the large-diameter arc-shaped portion 8.
It is located inside 7a and does not rotate the loading arm 34. At this time, the loading arm 34
Is the release position where the recording / reproducing unit support frame 4 is lowered to the chassis 1 side.

Then, as shown in FIG. 7, when the selected disc tray 67 is in the eject position, the loading motor 23 is rotationally driven in the loading direction indicated by an arrow L ₁ in FIG. Then, the first cam gear 30 is rotated in the loading direction indicated by the arrow L ₂ in FIG. Then, the second cam gear 33 is rotationally operated following the first cam gear 30 via the first drive pin 95, and the rotating arm 4
1 is rotated in the loading direction. The rotating arm 41 rotates the selected disc tray 67 to the stock position inside the outer casing 91, as shown by the arrow B in FIGS. 2 and 6.

At this time, as shown in FIG. 6, all the disk trays 67 are in the stock position, and the elevator mechanism can perform the lifting operation of the tray holder 62.

Then, as shown in FIG. 6, when all the disc trays 67 are in the stock position,
When the loading motor 23 is rotationally driven in the loading direction indicated by arrow L ₁ in FIG. 4, the first cam gear 30 is rotationally operated in the loading direction indicated by arrow L ₂ in FIG. Then, the second cam gear 33 is moved by the second cam gear 33 via the first drive pin 95.
The rotation arm 41 is rotated in the loading direction. This rotating arm 41
2 rotates the selected disc tray 67 to the play position, which is the position facing the recording / reproducing unit, as indicated by the arrow C in FIGS.

When the selected disc tray 67 is set to the play position, the drive arm 31 attached to the first cam gear 30 has a tapered portion on the tip side of the second drive pin 96. The regulation pin 112
By riding on the first cam gear 3 against the biasing force of the leaf spring 32, as shown by an arrow K in FIG.
It is moved in the direction away from 0. Then, the fitting engagement of the first drive pin 95 with respect to the engagement hole 104 is released, and the rotation of the first cam gear 30 is changed to the second state.
Is no longer transmitted to the cam gear 33. Therefore, even if the loading motor 23 is further driven to rotate in the loading direction, the second cam gear 33 is stopped and only the first cam gear 30 is rotationally operated. At this time,
The tip portion of the first drive pin 95 moves while being supported by the upper end portion of the support protrusion 105, as indicated by an arrow J in FIG.

The first cam gear 30 is further rotated in the loading direction, and the cam gear 87 causes the loading arm 34 to move to the arrow L _{3 in} FIG.
Rotate in the loading direction indicated by. That is, the first copying pin 36 goes from the large-diameter circular arc portion 87a to the small-diameter circular arc portion 87c via the connecting portion 87b. When the loading arm 34 is rotationally operated in this way, the second copying pin 94 enters the cam groove 107 of the second cam gear 33 which is stopped, and the second cam gear 33 rotates. Prevent movement. Further, the loading arm 34 includes the loading cam 39,
It is rotated in the loading direction indicated by the arrow L ₄ in FIG. 4, and as indicated by the arrow G in FIG. 5, the recording / reproducing unit support frame 4 is rotated in the direction in which the disc table 12 moves upward.

The loading arm 34 is
When the first copying pin 36 reaches the small-diameter circular arc-shaped portion 87c, the rotation operation of the recording / reproducing unit support frame 4 is completed,
The chucking of the recording disk 201 by the disk table 12 and the chucking plate 18 is completed.

Completion of chucking of the recording disk 201 is detected by a sensor, and the loading motor 23 is stopped via the control circuit.

As described above, with respect to the recording disk 201 which has been chucked by the disk table 12 and the chucking plate 18, information signals can be written or read by the optical pickup device 10. it can.

When the recording disk 201 is being chucked by the disk table 12 and the chucking plate 18, the loading motor 23 is rotationally driven in the unloading direction indicated by arrow U ₁ in FIG. Then, the first cam gear 30 is rotated in the unloading direction indicated by arrow U ₂ in FIG. Then, the loading arm 34 is rotated in the unloading direction via the first copying pin 36 as shown by an arrow U ₃ in FIG.
As shown by an arrow H in FIG. 1, the recording / reproducing unit support frame 4 is rotated to release the chucking of the recording disk 201. At this time, the second cam gear 33
Is not rotated.

When the first copying pin 36 returns to the large-diameter circular arc portion 87a, the chucking of the recording disk 201 is completed. At this time, the first drive pin 95 is fitted and engaged in the engagement hole 104. Further, at this time, the second copying pin 94 comes out of the cam groove 107 of the second cam gear 33, and enables the second cam gear 33 to rotate.

When the loading motor 23 is further rotated in the unloading direction, the first cam gear 30 is rotated in the unloading direction and the second cam gear 33 is driven in the first driving direction. The first cam gear 30 is rotated via the pin 95, and the rotation arm 41 is rotated in the unloading direction. This rotating arm 41 is shown in FIG.
And, as indicated by an arrow D in FIG. 6, the selected disc tray 67 is rotated to the stock position in the outer casing 91.

At this time, as shown in FIG. 6, all the disk trays 67 are in the stock position, and the elevator mechanism can move the tray holder 62 up and down.

[6] Operation of Disc Changer Device In the disc changer device according to the present invention configured as described above, when the disc trays 67 are all in the stock position, the elevator mechanism causes By operating the tray holder 62 up and down, one disc tray 67 can be selected.

The disc tray 67 selected in this manner can be rotated by the rotation operation mechanism from the stock position to the eject position and from the stock position to the play position. You can

After the selected disc tray 67 is set to the play position, the rotation operation mechanism rotates the recording / reproducing section support frame 4 to record on the disc tray. The disk 201 is chucked by the disk table 12 and the chucking plate 18. Further, the rotation operation mechanism releases the chucking of the recording disk 201 by the disk table 12 and the chucking plate 18, and then moves the disk tray 67 on which the recording disk 201 is placed to the stock position. return.

The operation of selecting the disk tray 67, rotating the selected disk tray 67, and chucking and unchucking the recording disk placed on the selected disk tray 67 are the same as the operations on the operation section. Accordingly, it is executed under the control of the control circuit.

In the disc changer device according to the present invention, the stock position and the play position may be interchanged with respect to the above example. In this case, the recording / reproducing unit is connected to the chassis 1
The stock position is located on the front side of the recording / reproducing section.

[0097]

As described above, in the disc changer device according to the present invention, one of a plurality of disc trays, each of which is rotatably supported and holds one recording disc, has an eject position, a stock position and a play position. A rotation operation mechanism for rotating the disk tray between positions and a movement operation for moving each of the disk trays in a direction along a support shaft of the disk tray to select one disk tray by the rotation operation mechanism. And a mechanism are provided.

Therefore, this disc changer device can record or reproduce the selective information signal with respect to the plurality of recording discs held in the respective disc trays while having a simple structure.

Further, in the disc changer device, the movement operation mechanism has a cam body whose axial direction is parallel to a support shaft supporting each of the disc trays and which is rotated around the shaft. A holding body holding each of the disc trays is engaged with the cam portion, and the cam portion is formed in a plane shape orthogonal to the axis of the cam body and arranged in the axial direction of the cam body. And at least a number of plane-shaped portions corresponding to the number of the disk trays and a spiral-shaped portion formed in a shape that is a part of a spiral shape around the axis of the cam body and sequentially connecting the respective plane-shaped portions. If the holding member is formed to have the holding member, the turning operation mechanism turns the disc tray when the holding member is engaged with the planar portion. Stop position of cam body Without maintaining the high accuracy, it is possible to maintain the stop position of each disc tray with high accuracy.

Further, in the above-mentioned disc changer device, the rotating operation mechanism operates the chucking mechanism of the recording / reproducing portion when one disc tray is conveyed to the play position, and the disc tray is held. When the chucking operation is performed on the recording disk being operated, the rotation operation of the disk tray and the chucking operation of the recording disk can be continuously performed by the driving force of one motor. The configuration can be simplified.

That is, according to the present invention, a plurality of recording discs are loaded, and it is possible to selectively record or reproduce information signals on these recording discs, while simplifying the configuration and downsizing. A disk changer device can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a disc changer device according to the present invention.

FIG. 2 is a plan view showing a configuration of a rotation operation mechanism of the disc changer device.

FIG. 3 is a plan view showing a configuration of a movement operation mechanism of the disc changer device.

FIG. 4 is a plan view showing a configuration of a recording / reproducing unit of the disc changer device.

FIG. 5 is a vertical cross-sectional view showing a state where one disc tray is in a play position in the disc changer device.

FIG. 6 is a vertical cross-sectional view showing a state where all the disc trays are in the stock position in the disc changer device.

FIG. 7 is a vertical cross-sectional view showing a state where one disc tray is in an eject position in the disc changer device.

FIG. 8 is a side view of an essential part showing the configuration of the essential part of the rotation operation mechanism of the disc changer device.

FIG. 9 is an exploded perspective view showing a configuration of a main part of a rotation operation mechanism of the disc changer device.

FIG. 10 is a side view showing a shape of a cam body which constitutes a movement operation mechanism of the disc changer device.

11 is a side view showing the shape of a cam body that constitutes the movement operation mechanism of the disc changer device, and is a side view seen from a direction different from that in FIG.

[Explanation of symbols]

 3 recording / reproducing unit chassis 4 recording / reproducing unit support frame 10 optical pickup device 12 disc table 17 chucking arm 18 chucking plate 30 first cam gear 33 second cam gear 41 rotating arm 50 cam body 52 cam groove 52a planar portion 52b spiral portion 58 tray support shaft 62 tray holder 67 disc tray 75 tray holder lid plate 91 outer housing 201 recording disc

Claims (3)

[Claims] 1. A plurality of disc trays, each of which is rotatably supported via a coaxial support shaft and holds one recording disc, and one of the disc trays is held by the disc tray. The ejected position where the recording disk is outside the outer housing, the stock position where the recording disk is inside the outer housing, and the position where the recording disk corresponds to the recording / reproducing unit inside the outer housing. A rotating operation mechanism for rotating over the play position, and the disk trays are moved in a direction along the support shaft to move the disk trays with respect to the rotating operation mechanism. A disk changer device having a moving operation mechanism for selecting one disk tray by a rotation operation mechanism. 2. The moving operation mechanism has a cam body whose axial direction is parallel to a support shaft for supporting each disc tray and which is rotated around the shaft, and each disc tray is attached to a cam portion of the cam body. A holding member for holding the cam member is engaged, and the cam portion corresponds to at least the number of the disc trays formed in a plane shape orthogonal to the axis of the cam member and arranged in the axial direction of the cam member. And a spiral-shaped portion that is formed in a shape that is a part of a spiral shape around the axis of the cam body and that successively connects the planar-shaped portions. 1. The disc changer device according to 1. 3. The rotating operation mechanism operates a chucking mechanism of a recording / reproducing unit when one disc tray is conveyed to a play position to perform a chucking operation on a recording disc held by the disc tray. The disc changer device according to claim 1, which is made to perform.