JPH08287579A - Disk changer - Google Patents

Abstract

PURPOSE: To make it possible to return a selected disk to an initial position without providing the above device with detecting means corresponding to every disk. CONSTITUTION: A lifting lever 14 for lifting an elevator to select disks is provided with grooves (141 to 146) for memory, with which projections 130 of memory levers 123, 129 are engaged when the disks are selected. These memory levers 123, 129 are moved in follow up to the movement of the lifting lever. The elevator is held set in the position of the selected disk when the presence of the memory levers 123, 129 in the initial positions is detected by a switch 96.

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 for accommodating a plurality of recording discs and recording or reproducing information signals on one recording disc selected from these recording discs.

[0002]

2. Description of the Related Art Heretofore, there has been proposed a disc changer device which houses a plurality of recording discs and records or reproduces an information signal on one recording disc selected from the recording discs.

In such a disc changer device, a plurality of sub-trays on which the recording discs are placed and held are housed in a laminated form in an outer casing, and one of the sub-trays is selected by a disc selection mechanism. Some are configured to perform a loading operation.

The disk selection mechanism has a moving range for selecting and storing each of the sub-tray, a position facing the main tray, and a recording loaded in the selected and stored sub-tray in the outer casing. It is arranged so that it can be moved across a chucking position where the disc is mounted in the disc drive section.

That is, the disk selecting mechanism is located on the disk drive section, and is located in a range facing the disk stocker in which the sub trays are stacked and stored, and in a position close to the disk drive section. The elevator is operated up and down. The sub-tray is moved to the disc selection mechanism side and accommodated in the disc selection mechanism when the disc selection mechanism faces the disc stocker.

The recording disk is stored in the disk stocker while being placed and held on the sub-tray. Then, the recording disc, while being placed and loaded on the sub-tray, is transported to a position where it is mounted on the disc drive unit by the disc selection mechanism, and a reproducing operation is performed by the disc drive unit.

The main tray is a storage position inside the outer casing and a position where the sub-tray transferred from the disc selecting mechanism is accommodated and protruded to the outside of the outer casing. ) It is arranged so that it can be moved across the position.

That is, the main tray is located below the disc stocker, and extends horizontally between the storage position below the disc stocker and the ejection position outside the outer housing. Is moved to.

The sub-tray is moved to the main tray side and stored in the main tray in a state where the disc selection mechanism faces the main tray. The sub-tray is stored in the main tray, and when the main tray is at the ejection position, the recording disc is loaded or unloaded.

The elevating operation of the disk selecting mechanism is performed by an elevator mechanism. The horizontal movement operation of the main tray is performed by the transport mechanism. The transport mechanism also performs the operation of moving the sub-tray between the disc stocker and the disc selection mechanism, and between the disc selection mechanism and the main tray. The elevator mechanism and the transport mechanism are each driven by a motor as a driving force source.

[0011]

In the disc changer device as described above, one sub-tray in the disc stocker is selected, the selected sub-tray is housed in the disc selection mechanism, and the disc drive section is selected. After transporting the sub tray to the top or the main tray, the original tray (position) in the disc stocker
Need to be surely returned to.

Therefore, in the disc changer device, it is necessary to determine from which stage in the disc stocker the selected sub-tray has been conveyed. In some conventional disc changer devices, each sub-tray is provided with a discriminated portion for discriminating an individual sub-tray. The positions and shapes of the discriminated portions are different from each other depending on each sub-tray.

Providing such a discriminated portion on the sub-tray complicates the manufacturing and assembly of the sub-tray and the disc changer device.

It is conceivable that a sensor such as an optical sensor for detecting the presence or absence of a sub-tray or a recording disk is provided in each stage of the disc stocker, and the sub-tray is returned to the vacant stage of the disc stocker. .
However, in this case, since the number of sensors increases, the configuration becomes complicated, the control becomes complicated, and a malfunction easily occurs.

Further, if a mechanical sensor such as a push switch is provided at each stage of the disc stocker, the pressing force of the restoring force of the push switch to the initial state causes the displacement of the sub-tray in the disc stocker. May occur and an accurate operation may not be performed.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and is selected from a plurality of sub-trays held in the disk stocker without complicating the structure and inducing manufacturing and assembly. An object of the present invention is to provide a disc changer device capable of surely returning the sub tray to the original position in the disc stocker.

[0017]

In order to solve the above problems and achieve the above objects, a disk changer device according to the present invention includes a disk stocker for holding a plurality of sub-trays for holding recording disks in a stacked form, and A disc selection mechanism that is movably supported in a direction across the sub trays held in the disc stocker and selectively faces one of the sub trays; and a sub tray in which the disc selection mechanism is held in the disc stocker. Of the main tray to which the disc selecting mechanism faces when it is not facing any of the above, and between the disc selecting mechanism and the disc stocker and between the disc selecting mechanism and the main tray. A transport mechanism for transporting the sub-tray, a transport cam for moving the transport mechanism and the main tray, and a transport cam for transporting the sub-tray. A moving lever that is moved in accordance with the moving operation of the disk selection mechanism, a memory engaging portion formed in the moving lever in a number corresponding to the number of the sub-tray, and the memory engaging portion are engaged. The movable lever is movably supported over a position and a position where the engagement with the memory engaging portion is released, and when the memory engaging portion is engaged, the movable lever is moved along with the moving lever. The memory lever is provided with a memory lever which is maintained at the initial position when not engaged with the memory engaging portion, and a detection means which detects that the memory lever is at the initial position. And only when the transport mechanism has the sub-tray in the disc stocker,
The engagement with the memory engagement portion is released.

[0018]

In the disc changer device according to the present invention, the memory lever is controlled to move by the conveying cam, and the memory lever is moved to the memory engaging portion only when the conveying mechanism places the sub-tray in the disc stocker. When the sub-tray is positioned outside the disc stocker, the conveyance mechanism engages with the memory engaging portion and follows the moving lever. And then moved. Therefore, when the detection means detects that the memory lever has returned to the initial position, the movement lever has returned to the position when the disc selection mechanism selected the sub tray.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

In this example, the disc changer device according to the present invention is configured as a device for accommodating a plurality of optical discs as recording discs and reproducing information signals recorded on the optical discs selected from these optical discs.

The disc changer device will be described in the following order.

[1] Outline of disc changer device [2] Configuration of disc drive unit [3] Configuration of disc stocker and sub-tray [4] Configuration of disc selection mechanism (4-1) Configuration of sub-tray holder (4-2) ) Elevator mechanism configuration (4-3) Optical disc dropout prevention mechanism [5] Main tray configuration (5-1) Main tray configuration (5-2) Lock mechanism for sub-tray [6] Transport mechanism (6-1) Power transmission mechanism (6-2) Position detection sensor [7] Operation of disc changer device [1] Outline of disc changer device An optical disc used as a recording disc in this disc changer device is made of polycarbonate as shown in FIG. It has a transparent disk substrate made of such a synthetic resin material. This disk substrate has a diameter of, for example, 12 cm or 8 cm, and fine concave and convex (pit) rows corresponding to an information signal are formed in a spiral shape which is substantially concentric on one main surface portion. A reflection layer made of a thin film of a metal material such as aluminum is adhered to one main surface portion of the disk substrate. This optical disc 201
Has a chucking hole 202 in the central portion.

The disc changer device is
As shown in FIGS. 1 and 3, it has a chassis 1. On the chassis 1, a disc drive unit 2 is arranged at the rear side to read an information signal from the optical disc 201.

A plurality of optical disks 201 are provided on the chassis 1 in front of the disk drive unit 2.
A disk stocker 77 is provided so as to be able to be housed in a laminated form.

On the chassis 1, a sub-tray holder 52 which is located above the disc drive unit 2 and constitutes a disc selection mechanism is disposed. As shown by the arrow B in FIGS. 1 and 3, the sub-tray holder 52 is moved up and down through the elevator mechanism with respect to both side wall portions 20 and 21 erected on the left and right side portions of the chassis 1. Supported as possible. That is, the sub-tray holder 52 can be brought into and out of contact with the disc drive unit 2.

The side wall portions 20 and 21 are connected to each other at their lower end portions through a bottom plate member 22,
The bottom plate member 22 is formed integrally with each other. When the sub-tray holder 52 is moved up and down by the elevator mechanism and is at a disc selection position which is a height position facing any one of the plurality of sub-tray 87 in the disc stocker 77, the sub-tray holder 52 shown in FIG. As shown by an arrow D in FIG. 3, one sub-tray 87 is selected from the plurality of sub-tray 87 and is pulled out to the rear side of the disk stocker 77 and stored. The optical disc 201 is placed and held on the sub-tray 87.

The sub-tray holder 52 is disposed on the chassis 1 when the sub-tray holder 52 is at an unchucking position which is a predetermined height position that does not face any sub-tray 87 in the disc stocker 77. It opposes the rear edge of the main tray 69.

Further, when the sub-tray holder 52 is at the chucking position in the vicinity of the disc drive unit 2, the optical disc 20 held on the sub-tray 87 in which the sub-tray holder 52 is housed.
1 is attached to the disk drive unit 2.

Then, the sub-tray holder 52 can return the stored sub-tray 87 to a predetermined position in the disc stocker 77 again.

Further, the main tray 69 arranged on the chassis 1 is supported so as to be movable in the front-rear direction as shown by an arrow A in FIGS. 1 and 3. The main tray 69 can be moved and operated between a storage position which is a lower side position of the disc stocker 77 and an ejecting position which is a position protruding forward from the front edge portion of the chassis 1. Has been made.

The sub tray 87 accommodated in the sub tray holder 52 is accommodated in the main tray 69 from the rear side. That is, the sub-tray 87 in the front-rear direction is a stock position which is a position stored in the disc stocker 77 or the main tray 69 in the storage position and a play position which is a position stored in the sub-tray holder 52. Then, the transfer operation is carried out between the eject position and the eject position which is the position accommodated in the main tray 69.

When the main tray 69 is at the ejection position, the main tray 69 is located at the front side of the outer casing 151 through the disc insertion hole 153 formed in the front surface of the outer casing 151 of the disc changer device. Be projected. When the main tray 69 is at the ejection position, the sub-tray 87 accommodated in the main tray 69 can be loaded and unloaded with the optical disc 201.

[2] Structure of Disk Drive Section As shown in FIGS. 1 and 3, the disk drive section 2 includes a plurality of dampers 152, 15 with respect to the chassis 1.
It has a frame 7 which is so-called floating supported via 2. The disk drive unit 2 includes a spindle motor 5 attached to the frame 7 and an optical pickup device 3 movably supported on the frame 7.

The spindle motor 5 has a drive shaft protruding toward the upper side of the chassis 1. A disk table 4 is attached to this drive shaft. The disc table 4 is formed in a substantially disc shape, and has a truncated cone-shaped projection in the central portion of the upper surface portion. When the optical disc is placed on the disc table 4, the protrusion fits into the chucking hole 202 of the optical disc, and the centering of the optical disc 201 is performed.
I do. This disc table 4 is the same as the optical disc 2 described above.
01 is mounted, and is rotated together with the optical disc 201 by the driving force of the spindle motor 5.

The optical pickup device 3 has an optical block supported by the frame 7 so as to be movable in the direction of contact with and away from the disc table 4, and a laser diode serving as a light source is provided in the optical block. , Optical devices such as beam splitter and objective lens, and photodetectors such as phototransistors. The optical pickup device 3 collects the light flux emitted from the laser diode onto the optical disc 201 on the disc table 4 by the objective lens and irradiates the optical flux, and reflects the luminous flux reflected by the optical disc 201 and returns to the objective lens. The light flux is configured to be detected by the photodetector. The output signal from the photodetector is a signal obtained by reading the information signal recorded on the optical disc 201.

The optical pickup device 3 is moved by the drive mechanism 6 with respect to the frame 7 to irradiate the light flux over the inner and outer circumferences of the optical disc 201 mounted on the disc table 4. The information signal can be read from the entire surface of the optical disc 201.

The disc drive unit 2 moves the sub-tray 87 to a position where the optical disc 201 mounted on the sub-tray 87 is mounted on the disc table 4, and the optical disc 201 on the sub-tray 87 is moved. It has a disc sensor 8 which serves as a disc detecting means for detecting the presence or absence of the disc.

The disc sensor 8 is a so-called photocoupler, and is configured to have a light emitting element and a light receiving element, and the presence or absence of the optical disc 201 on the sub-tray 87 is passed through a disc detecting through hole 88 described later. To detect.

[3] Structure of Disc Stocker and Sub-Tray The disc stocker 77 is a disc storage device for storing a plurality of sub-trays 87 in a stacked state. In this embodiment, the disc stocker 77 accommodates six sub trays 87. As shown in FIGS. 1 and 3, the disk stocker 77 is formed in a substantially rectangular housing shape, and the rear side allows the sub-tray 87 to be taken in and out as indicated by an arrow D in FIGS. 1 and 3. It is open for use.

The disc stocker 77 is fixedly disposed on the chassis 1 via the bottom plate member 22.

The sub-tray 87 is formed in a substantially rectangular flat plate shape, and has a circular concave portion into which the optical disc 201 is fitted, on the upper surface thereof. This recess is formed as a circular recess having a diameter of 12 cm, for example, according to the diameter of the optical disc 201.

The sub-tray 87 has a notch 89 extending from the front edge to the central portion. The notch portion 89 is a chucking hole 202 of the optical disc 201, a peripheral portion of the chucking hole 202, and a part of a signal recording area when the optical disc 201 is mounted in the recess. The inner and outer circumferences of the optical disc 201 are exposed to the lower side of the sub tray 87.

In the disk stocker 77, as many shelf members 78 as the number of sub-trays 87 to be housed are integrally formed so as to project. This shelf member 7
8 are formed on both side walls of the inner surface of the disk stocker 77 as a plurality of parallel protrusions forming a shelf. When the sub-tray 87 is inserted into the disc stocker 77, the shelf member 78 supports both side edge portions of the lower surface of the sub-tray 87 to place the sub-tray 87 horizontally.

A through hole 79 is formed at the front side of the side wall of the disk stocker 77 on one side. The through hole 79 has a vertically long shape, and allows a front side portion of one side edge portion of each sub-tray 87 housed in the disc stocker 77 to face outward.

A plurality of arm portions 83 of the leaf spring member 81 are inserted into the through hole 79 toward the inner side of the disc stocker 77. The leaf spring member 81 is attached to a screw hole 80 formed in the disc stocker 77 by a fixing screw 82. Each of the arm portions 83 is formed in a number corresponding to the number of the sub-tray 87, and each arm portion 83 is bent in a V shape so that the central portion thereof is inserted into the through hole 79.

In each of the sub trays 87, a V-groove-shaped hooking recess 91 is formed in the front portion of one side edge portion.

When the sub tray 87 is stored in the disc stocker 77 and placed on the shelf member 78,
The arms 83 of the spring member 81 have their central portions fitted into the hooking recesses 91 to prevent the sub trays 87 from falling off the disc stocker 77.

An engaging recess 90 is formed in the rear side portion of one side edge of each sub tray 87.
The engaging recess 90 is provided with an engaging rod 6 of the transport member 58 described later.
0 is for engaging and carrying operation of the sub tray 87. These engaging recesses 90 are formed in the sub tray 8 described above.
When 7 is stored in the disc stocker 77, it is exposed to the rear side of the side wall of the disc stocker 77.

Further, on the bottom surface of the recess of each sub-tray 87, a disk detection through hole 88 for a disk sensor 8 serving as disk detection means described later to detect the presence or absence of the optical disk 201 on this sub-tray 87. Has been established.

[4] Configuration of Disc Selection Mechanism (4-1) Configuration of Sub-Tray Holder The sub-tray holder 52 includes a top plate portion and a pair of left and right side plate portions hanging from both side edge portions of the top plate portion. And are formed integrally.

The top plate of the sub tray holder 52 has
A chucking plate 67 is rotatably attached. The chucking plate 67 is formed in a disk shape having substantially the same size as the disk table 4.

The sub-tray holder 52 has a pair of left and right shelf-like support groove portions similar to those provided on the disc stocker 77 on the inner side surface portions of the side plate portions facing each other. That is, this sub tray holder 5
With respect to No. 2, one side of the sub-tray 87 can be stored and held by inserting both side edge portions of the sub-tray 87 into the support groove portions from the front side.

The sub-tray holder 52 is arranged between a pair of side wall portions 20 and 21 which are parallel to each other on the chassis 1 and are erected so as to face each other, and the chucking plate 67 is attached to the disc table. It is located directly above 4.

The sub-tray holder 52 is provided with the support pins 5 projecting outward from the respective side plate portions.
It has 3,53. Then, the side wall portions 20 and 2
The guide slits 23 and 24 are formed in each of the parts 1. These guide slits 23 and 24 are formed in a straight line in the vertical direction. Each of the support pins 53, 53
Are inserted corresponding to the guide slits 23 and 24.

That is, the sub tray holder 52 is
The support pins 53, 53 are connected to the guide slits 2
Within the range of movement within 3, 24, it is possible to move vertically. The range in which the sub-tray holder 52 can move in the vertical direction is
It is a range from the unchucking position to the chucking position.

(4-2) Configuration of Elevator Mechanism The elevator mechanism in this disc changer device is a mechanism for moving up and down the sub-tray holder 52 on a linear trajectory within a predetermined range.

That is, a pair of left and right first and second cam plates 3 are provided on the outer side portions of the side wall portions 20 and 21, respectively.
3, 38 are attached so as to be movable in the front-rear direction. The first cam plate 33 is formed in a substantially flat plate shape, and a support groove portion 35 is formed in a horizontal direction on a surface portion facing one side wall portion 20. A support protrusion 29 is provided on the one side wall portion 20 so as to extend outward.

The support ridge 29 is fitted into the support groove 35 and supports the first cam plate 33 slidably in the front-rear direction.

The second cam plate 38 is also formed in a substantially flat plate shape, and a supporting groove portion 40 is formed in the horizontal direction on the surface portion facing the other side wall portion 21. Further, also on the other side wall portion 21, similarly to the above-mentioned one side wall portion 20, a supporting ridge is provided. The second cam plate 38
By being fitted into the support groove portion 40, the support ridge is supported so as to be movable in the front-rear direction.

An inclined cam groove 37 is formed in a surface portion of the first cam plate 33 facing the one side wall portion 20. In the inclined cam groove 37, the one side wall portion 20 is provided.
The front end side of the support pin 53 inserted into the guide slit 23 is inserted.

The inclined cam groove 37 is a groove formed so as to be inclined in a direction in which the front side is on the lower side and the rear side is on the upper side. Since a plurality of horizontal portions are formed in the middle, the inclined cam groove 37 has a polygonal line shape. Has become. Each of the horizontal portions corresponds to a position of the sub-tray holder 52 that faces the sub-tray 87, the unchucking position, and the chucking position.

An inclined cam groove 42 is formed on the surface of the second cam plate 38 facing the other side wall 21. Into the inclined cam groove 42, the support pin 53 inserted into the guide slit 24 of the other side wall portion 21 is inserted.
The tip side of is inserted.

The inclined cam groove 42 is a groove formed by inclining in such a direction that the front side is the upper side and the rear side is the lower side, and a plurality of horizontal portions are formed in the middle, so that the inclined cam groove 42 has a polygonal line shape. Has become. Each of the horizontal portions corresponds to a position of the sub-tray holder 52 that faces the sub-tray 87, the unchucking position, and the chucking position.

These first and second cam plates 33, 38
Is a rear side position where the horizontal portion located on the front side of each of the inclined cam grooves 37 and 42 overlaps the guide slits 23 and 24, and a horizontal portion located on the rear side of each of the inclined cam grooves 37 and 42. The guide slits 23, 24 are movable over the front side position where they overlap each other.

Engaging pins 36 and 41 are respectively provided on the front end portions of the cam plates 33 and 38 so as to project downward.

The elevator mechanism is driven and operated by the lift motor 9 attached to the chassis 1. The driving force of the lifting motor 9 is
It is transmitted to the second transmission gear 12 via the drive gear 10 attached to the drive shaft of and the first transmission gear 11 meshing with the drive gear 10. A third transmission gear 13 is meshed with the second transmission gear 12.

As shown in FIG. 2, the third transmission gear 13 has a gear portion 140 of the elevating lever 14 serving as a moving lever.
Is engaged.

The elevating lever 14 is rotatable around the support shaft 99 by inserting the support shaft 99 planted on the chassis 1 into the support hole 148 provided in the central portion. . The lift lever 14 has both end portions extending toward both sides of the chassis 1.

A tip end portion 149 on one end side of the lifting lever
An engaging recess 50 with which the engaging pin 36 of the first cam plate 33 is engaged is formed in the. Further, the second cam plate 38 is provided on the protruding end portion 150 on the other end side of the elevating lever.
An engaging recess 51 is formed with which the engaging pin 41 of FIG.

That is, when the elevating lever 14 is rotated, the first and second cam plates 33, 38 move in the opposite directions as shown by arrows E and F in FIG. Operated.

A through hole 139 is formed in the other end portion of the elevating lever 14, and the inner peripheral portion of the through hole 139, which is the other end side of the elevating lever 14, is the gear. The part 140 is formed. The gear portion 140 is formed in an arc shape centered on the support shaft 99. That is, the driving force of the elevating motor 9 is transmitted to the elevating lever 14 to rotate the elevating lever 14 around the support shaft 99.

When the first cam plate 33 is moved to the front side and the second cam plate 38 is moved to the rear side, the sub tray holder 52 is operated to move upward. Then, when the first cam plate 33 is moved to the rear side and the second cam plate 38 is moved to the front side, the sub-tray holder 52 is operated to move downward.

That is, in this elevator mechanism, the sub tray holder 52 can be moved up or down depending on whether the rotation driving direction of the lifting motor 9 is forward or reverse.

At the upper end of the front portion of the second cam plate 38, a plurality of positions corresponding to the sub-tray 87 in the disc stocker 77, the unchucking position and the chucking position are provided. The positioning groove 43 is formed. At the upper end of the front side portion of the second cam plate 38 in which the positioning groove portions 43 are formed, the base end side with respect to the disc stocker 77 is provided with a screw 8
A ball (steel ball) 86 urged downward is pressed against the tip end side portion of the leaf spring 84 fixed and supported by 5.

That is, the second cam plate 38 is positioned and stopped at the position where the ball 86 is fitted into any of the positioning groove portions 43.

A plurality of positioning slits 154 are formed on the lower end of the front portion of the second cam plate 38. On the lower end side of the front side portion of the second cam plate 38 where the positioning slits 154 are formed, the photocoupler (photodetector) 1 disposed on the chassis 1 is provided.
55 is opposed.

That is, the second cam plate 38 is provided with the positioning slit 154 by the photo coupler 155.
Is positioned and stopped at the position where is detected.

(4-3) Optical Disc Fall-Out Prevention Mechanism A slit 54 is formed at the front end of the top plate of the sub-tray holder 52, that is, at the portion facing the disc stocker 77. In this slit 54,
One end of the rotating lever member 55 is attached so as to be rotatable and slidable. That is, this rotation lever member 5
On one end side of 5, there is provided a support shaft 56 projecting rearward so as to be inserted into and engaged with the slit 54.

At the other end of the rotary lever member 55, a support shaft 57 is provided so as to project toward the front side. The support shaft 57 on the other end side of the rotating lever member 55 is engaged with a slit (not shown) formed in a rear end portion of an upper portion of the disc stocker 77 so as to be rotatable and slidable.

The rotating lever member 55 is rotated in conjunction with the raising / lowering operation of the sub tray holder 52. Further, the rotation lever member 55 is located on the rear side of the disc stocker 77 to prevent the sub tray 87 from falling off the disc stocker 77 to the rear side.

At the rear end side portion of the sub-tray holder 52, a fall prevention member 62 is rotatably attached. The detachment prevention member 62 is rotatably supported at the central portion thereof with respect to the sub-tray holder 52 via a support shaft 63. The drop-out prevention member 62 has the contact piece portion 64 on one end side located at the rear side of the sub-tray holder 52 substantially at the center, and the copying projection portion 65 on the other end side of the sub-tray holder 52. It projects to the side.

The cam groove portion 6 into which the copying projection portion 65 is fitted and engaged is provided at the rear portion of the inner side surface portion of the other side wall portion 21.
8 are provided. The cam groove portion 68 has a shape that is located on the rear side on the upper side and on the front side on the lower side.

Therefore, the fall-off preventing member 62 is rotated in conjunction with the raising / lowering operation of the sub-tray holder 52. That is, when the sub-tray holder 52 is located between the disc selection position and the unchucking position, the drop-out preventing member 62 is positioned so that the copying protrusion 65 is located on the rear side. The contact piece 64 is rotated in a direction to move it forward. At this time, the falling prevention member 62 is placed on the sub-tray 87 housed and held in the sub-tray holder 52 by the abutment piece 64.
The rear edge of the optical disc 201 is abutted and supported to prevent the optical disc 201 from falling rearward from the sub-tray 87.

When the sub-tray holder 52 is at the chucking position, the drop-out preventing member 62 moves the abutting piece 64 rearward by positioning the copying protrusion 65 on the front side. It is rotated in the direction to let it. At this time, the drop-off preventing member 62 is attached to the sub-tray 8 stored in the sub-tray holder 52.
The contact piece 64 is separated from the trailing edge of the optical disc 201 mounted on the optical disc 7 so as not to prevent the optical disc 201 from being rotated by the spindle motor 5.

[5] Configuration of Main Tray (5-1) Configuration of Main Tray The main tray 69 is a frame which encloses a substantially flat plate-shaped main surface portion and the front edge portion and left and right side edge portions of the main surface portion. And a shaped portion. The main tray 69 is configured such that the sub-tray 87 can be inserted into the frame portion from the rear side while being positioned on the main surface portion.
The sub-tray 87 inserted in the main tray 69 is
The concave portion on which the optical disc 201 is placed and held is made to face upward. The main tray 69 includes a pair of guide rail portions 30 and 31 formed on both sides of an upper surface of the bottom plate member 22 on the chassis 1 in the front-rear direction and lower surfaces of both side portions 75 and 76 of the frame-shaped portion. Is supported and is movable in the front-back direction.

As shown by an arrow A in FIG. 3, the main tray 69 is located below the disc stocker 77 and is housed in the outer casing 151, and the front portion of the outer casing 151. It is possible to perform a moving operation over a discharge (eject) position that is projected further to the front side.

(5-2) Lock Mechanism for Sub Tray The main tray 69 is provided with a lock mechanism for locking the sub tray 87 stored in the main tray 69 in the stored state.

This lock mechanism is used for the main tray 69.
The engaging member 74 is movably arranged in the front portion on the one side. The engaging member 74 is attached to the main tray 69 so as to be movable in the lateral direction. The engaging member 74 is urged to move toward the center of the main tray 69 by a torsion coil spring.

The sub tray 8 is provided on the main tray 69.
When 7 is stored, the engagement member 74 engages with the engagement recess 91 of the sub-tray 87 by the biasing force of the torsion coil spring, and engages the sub-tray 87 in the accommodated state.

When the sub-tray 87 is inserted into or removed from the main tray 69, when the main tray 69 is in the storage position, the engaging member 74 has the first protrusion 28 formed on the bottom plate member 22 so as to project. When the sub tray 87 is brought into contact with the main tray 69, the sub tray 87 is moved in a direction away from the sub tray 87, so that the sub tray 87 can be inserted into and removed from the main tray 69.

A latch lever 72 is rotatably arranged at the rear edge of the main plate of the main tray 69 via a support shaft 73 projecting from the main tray 69. . The latch lever 72 is located at a position where one end thereof is projected above the upper surface of the main plate portion of the main tray 69 and a position where the one end is lowered below the upper surface of the main plate portion. It can be turned over.

That is, the latch lever 72 prevents the sub-tray 87 from entering and exiting the main tray 69 when one end of the latch lever 72 is projected above the upper surface of the main plate portion of the main tray 69. .

When the sub-tray 87 is inserted into or removed from the main tray 69, when the main tray 69 is in the storage position, the latch lever 72 is placed.
Is the second protrusion 2 formed on the bottom plate member 22.
By making contact with 7, the rotary operation is performed in the direction in which one end side is downward, and the sub-tray 87 can be inserted into and removed from the main tray 69.

Therefore, in the main tray 69, when in the storage position, the sub tray 8
7 can be put in and out, and when the sub tray 87 is on the discharge position side with respect to the storage position, the sub tray 87 is prevented from coming out backward.

[6] Transport Mechanism (6-1) Power Transmission Mechanism On one side portion of the chassis 1, a transport slider 17 constituting a transport mechanism is provided in the front-back direction as shown by an arrow G in FIG. It is arranged so as to be movable. The carrying slider 17 is formed in a linear rod shape having a length substantially corresponding to the side edge portion of the disk stocker 77, and is mounted on the chassis 1 with the longitudinal direction being the front-rear direction. The transport slider 17 is provided on the disk stocker 7 described above.
It is movable between a position on the side of 7 and a position on the side of the disk drive unit 2.

That is, the carrying slider 17 has a guide groove portion 115 along the longitudinal direction on the lower surface thereof, and a guide pin protruding from the chassis 1 is fitted into the guide groove portion 115 to move in the front-back direction. It is movably supported.

The carrying slider 17 has a rear end portion,
The transfer claw 116 is provided so as to project upward. The transport claw 116 has a slit 117 formed in the vertical direction. The engaging portion 61 of the conveying member 58 constituting the conveying mechanism is fitted in the slit 117 so as to be slidable in the vertical direction as indicated by an arrow H in FIG. The engaging portion 61 is provided so as to project downward from the conveying member 58.

The transport member 58 has a guide groove 59 formed horizontally. This guide groove 5
9 is engaged with a guide rail portion formed on the inner side surface portion of one side plate portion of the sub tray holder 52 so as to be slidable in the horizontal direction. The carrying member 58 has an engaging rod 60 that horizontally projects toward the center of the chassis 1. The engaging rod 60 is for fitting and engaging with the engaging concave portion 90 of the sub-tray 87, and the carrying slider 17 is used for the disc stocker 7.
When it is at the side position of 7, the position is set to a position corresponding to the engaging concave portion 90 of the sub tray 87 accommodated in the disc stocker 77, as shown in FIG.

In this state, the sub-tray holder 52 is moved by the elevator mechanism by the elevator member.
Accordingly, it is possible to vertically move up and down over the disc selection position, the unchucking position, and the chucking position. Thus, when the sub-tray holder 52 is moved up and down, the engaging rod 60
Will pass vertically through the engagement recesses 90 of the sub trays 87.

When the carrying slider 17 is moved rearward as shown in FIG. 5 when the sub-tray holder 52 is at the disc selecting position, the carrying slider 17 is engaged with the engaging rod. By moving 60 while engaging with the engaging recess 90, one sub-tray 87 is taken out from the disc stocker 77 and stored in the sub-tray holder 52.

When the transport slider 17 is located on the side of the disc drive unit 2, the sub-tray 87 is housed in the sub-tray holder 52 and moved following the sub-tray holder 52. Becomes

When the sub-tray holder 52 accommodating the sub-tray 87 is in the unchucking position, the carrying slider 17 moves the sub-tray 87 to the sub-tray holder 52 as shown in FIGS. 6 and 7. It can be moved from inside to inside the main tray 69.

When the sub-tray holder 52 is lowered to reach the chucking position while the sub-tray 87 is stored in the sub-tray holder 52, as shown in FIG.
As shown in FIG. 2, the optical disc 201 placed on the sub-tray 87 is placed on the disc table 4 and separated from the sub-tray 87, and the disc table 4 and the chucking plate 67 separate the disc 201 from the sub-tray 87. It is sandwiched and is in a state of being rotated by the spindle motor 9.

At this time, the disc table 4 and the optical pickup device 3 enter the upper side of the sub-tray 87 through the notch 89 that opens the central portion of the sub-tray 87.

Further, the carrying slider 17 is moved forward with respect to the sub tray holder 52 in a state where the sub tray holder 52 is at the disc selecting position, whereby the sub tray 87 is moved to the disc stocker. Return to the stock position in 77.

The chassis 1 is provided with power transmission means for moving and operating the main tray 69 and the carrying slider 17.

That is, a loading motor (not shown) serving as a driving force source is attached to the lower surface of the chassis 1. A drive gear is attached to the drive shaft of the loading motor. This drive gear rotationally operates the transmission gear 16 via a plurality of gears.

The transmission gear 16 is a conveyance cam gear 15 which serves as a conveyance cam rotatably arranged on the chassis 1.
Meshes with the first gear portion 105 on the outer peripheral side. That is, when the loading motor is driven to rotate,
The transport cam gear 15 is rotated.

On the outer peripheral side of the transport cam gear 15, there is a second
The gear part 106 is formed. A first reversing gear 109 rotatably arranged on the chassis 1 meshes with the second cam gear 106. The first reversing gear 109 meshes with a first conveying gear 110 rotatably arranged on the chassis 1. A second reversing gear 111 rotatably arranged on the chassis 1 meshes with the first transport gear 110. Further, the second reversing gear 111 is meshed with a second conveying gear 112 rotatably arranged on the chassis 1.

The transport gears 110 and 112 are arranged in the front-rear direction and mesh with the rack gear portion 113 formed on the side edge of the transport slider 17. The rack gear portion 113 includes the transport slider 17
Is at the frontmost position, which is the side of the disk stocker 77, the transfer gears 110, 112 are
Is located on the front side of the carrier gears 110,
Not meshing with 112.

Then, the rack gear portion 113, when the transport slider 17 is moved rearward of the side position of the disk stocker 77, the transport gears 1 are moved.
It meshes with 10,112.

A copying pin 114 is provided so as to protrude from the upper surface on the rear side of the carrying slider 17. A cam groove 108 into which the copying pin 114 is fitted is formed on the lower surface of the transport cam gear 15. This cam groove 10
Reference numeral 8 has a portion forming a part of a concentric circle with respect to the transport cam gear 15 and an inclined portion open to the outer peripheral side of the transport cam gear 15, and is formed in a spiral shape as a whole.

That is, the carrying slider 17 is held at the frontmost position when the copying pin 114 is fitted in the concentric portion of the cam groove 108. Then, in the carrying slider 17, the carrying cam gear 15 is rotated so that the copying pin 114 follows the inclined portion of the cam groove 108.
When it is moved to the outer peripheral side, it is moved to the rear side to move the rack gear portion 113 to each of the transport gears 110, 112.
Mesh with.

Then, a third gear portion 103 is formed on the upper surface portion of the transport cam gear 15. The gear portion 45 of the main tray transfer arm 18 rotatably disposed on the chassis 1 meshes with the third cam gear 103.

The main tray transfer arm 18 has a support hole 48 at the base end side, and the support shaft 19 planted on the chassis 1 is inserted into the support hole 48 so as to be rotatably supported. Has been done.

A main tray engaging projection 44 is provided on the tip side of the main tray carrying arm 18 so as to project upward. The main tray engaging protrusion 44 is fitted and engaged with an engaging slit 71 formed in the main tray 69.

When the main tray transfer arm 18 is rotated, the main tray 69 is moved between the storage position and the discharge position.

At the base end side portion of the main tray transfer arm 18, a substantially semicircular gear portion 45 having an arc shape centered on the support hole 48 and partially having a toothless portion 46 is formed.
Are formed.

The gear portion 45 has the toothless portion with respect to the third gear portion 103 of the transport cam gear 15 when the main tray transport arm 18 is in the rotating position with the main tray 69 in the storage position. The parts 46 are opposed to each other and do not mesh with the third gear part 103.

When the main tray transfer arm 18 is rotated to the rotation position where the main tray 69 is located on the front side of the storage position, the gear portion 45 causes the third gear portion 103 to rotate. Mesh.

A copy pin 47 is provided in the vicinity of the toothless portion 46 of the main tray transfer arm 18 so as to project downward. A cam groove 107 into which the copying pin 47 is fitted is formed on the upper surface of the transport cam gear 15. The cam groove 107 is provided in the transport cam gear 1 described above.
5, a portion forming a part of a concentric circle and an inclined portion open to the outer peripheral side of the transport cam gear 15 are formed in a spiral shape as a whole.

That is, the main tray transfer arm 1 described above.
Reference numeral 8 denotes the main tray 69 when the copying pin 47 is fitted in the concentric portion of the cam groove 107.
Is held at the rotating position with the above-mentioned storage position. And
The main tray transfer arm 18 is moved to the outer peripheral side of the transfer cam gear 15 when the transfer pin 47 is moved along the inclined portion of the cam groove 107 by the rotation of the transfer cam gear 15, as shown in FIG. As shown, the main tray 69 is rotated in a direction to move it toward the front side, and the gear portion 45 is meshed with the third gear portion 103.

The positional relationship (timing) of movement and rotation of the carrying slider 17 and the main tray carrying arm 18 is determined by the cam groove 107 in the carrying cam gear 15.
It is defined by the shape of 108.

The positional relationship of movement and rotation of the carrying slider 17 and the main tray carrying arm 18 is such that when the carrying cam gear 15 is continuously rotated in a constant rotation direction, the carrying slider 17 is at the rear side. After the movement to the front side is completed, the main tray transfer arm 18
The rotation of the main tray 69 in the direction of moving the main tray 69 forward from the storage position is started, and the rotation of the main tray transport arm 18 in the direction of moving the main tray 69 from the discharge position to the storage position. After the movement ends, the rearward movement of the transport slider 17 is started.

A memory lever 123 is rotatably attached to the support shaft 99 which supports the elevating lever 14. The memory lever 123 is rotatable coaxially with the elevating lever 14.

The memory lever 123 is provided with an operating rod portion 1 for pressing an initial position detecting switch 96 described later.
Has 28.

A memory slider 129 is provided on the tip side of the memory lever 123.
It is attached so as to be rotatable and slidable via a support shaft 124 implanted in the. This memory slider 129
Has a slit 132, and the spindle 124 is inserted through the slit 132 and attached to the memory lever 123. An engagement protrusion 130 is provided on the tip side of the memory slider 129. The engaging projection 130 is inserted into the through hole 139 of the elevating slider 14.

Further, a pressed piece member 133 is rotatably attached to the tip end side of the memory slider 129. The pressed piece member 133 has an insertion hole 134, and is rotatably attached to the memory slider 129 via a support shaft 135 inserted into the insertion hole 134. The pressed piece member 133 has a lower side,
That is, the pressed piece 154 faces the chassis 1 side.
Is drooping.

The memory lever 123 is pivoted in a direction in which the initial position detection switch 96 is pressed by a tension coil spring 137 stretched between the memory lever 123 and the chassis 1 as shown by an arrow L in FIG. It is biased and positioned at the initial position by a positioning piece (not shown).

Further, the pressed piece member 133 has the memory slider 129 mounted on the support shaft 99 as shown by an arrow K in FIG. 2 by the tension coil spring 138 stretched between the pressed lever member 133 and the memory lever 123. It is urged to move closer.

A pressing lever 118 is provided on the chassis 1 so as to be slidable toward and away from the carrying cam gear 15. This pressing lever 118
Has a long hole 119, and the support shaft 98 planted on the chassis 1 is inserted into the long hole 119 so as to be slidable. The pressing lever 118 is disposed between the carrying cam gear 15 and the pressed piece 154 supported by the memory slider 129.

The pressing lever 118 has a copying surface 121 at one end facing the carrying cam gear 15. The pressing lever 118 is biased by a torsion coil spring 122 arranged on the chassis 1 in a direction in which the copying surface 121 is pressed against the carrying cam gear 15.

The carrying cam gear 15 has the copying surface 12
A cam surface 104 is provided in a portion where 1 is pressed. The cam surface 104 positions the carrying slider 17 on the front side, and the main tray carrying lever 118.
Only when the main tray 69 is in the rotating position for locating the main tray 69 in the storage position.
Against the biasing force of the torsion coil spring 122, and is moved forward in a direction away from the support shaft 99.

The pressing lever 118 has a pressing piece 120 facing the pressed piece 154. That is, when the pressing lever 118 is moved in the direction away from the support shaft 99 against the biasing force of the torsion coil spring 122 when the memory lever 123 is in the initial state, it is shown in FIG. As described above, the pressing piece 120 presses the pressed piece 154, and the engaging projection 130 is separated from the inner peripheral portion of the through hole 139 of the elevating lever 14 and the portion on the support shaft 99 side. The memory slider 129 is moved so that

At the inner peripheral portion of the through hole 139 of the elevating slider 14 on the side of the support shaft 99, the first to sixth memory grooves 141, 1 serving as memory engaging portions are formed.
42, 143, 144, 145, 146 are formed by being sequentially arranged. These memory grooves 141, 1
42, 143, 144, 145, 146 correspond to each sub-tray 87 in the disc stocker 77.

That is, as shown in FIG. 4, the engaging projection 130 is inserted into the memory grooves 141, 142, 143.
In the state of being separated from the 144, 145, 146, the elevating lever 14 can be rotated without interfering with the memory lever 123. And FIG.
As shown in FIG. 7, when one sub-tray 87 is selected and the sub-tray 87 is delivered to the position where it is stored in the sub-tray holder 52, the pressing lever 118 retracts, so that the engaging protrusion 130 is One of the memory grooves 141, 142, 143, 144, 145, 146 is fitted and engaged. At this time, the engaging projection 130
The memory groove into which is fitted and engaged is determined by the rotation angle position of the elevating lever 14. That is, the engaging protrusion 1
The memory groove into which 30 is fitted is determined depending on which of the disc stockers 77 the selected sub tray 87 is.

After that, when the sub-tray holder 52 accommodating the selected sub-tray 87 is moved to the unchucking position or the chucking position, as shown in FIGS. 7 to 9, the memory lever 123 is moved. , And is rotated following the lifting lever 14.

When the sub-tray holder 52 is moved to the unchucking position or the chucking position, the pressing lever 118 moves the cam surface 10.
4, the memory lever 123 is rotated following the elevating lever 14, so that the pressing piece 120 contacts the pressed piece 154. Without making contact with each other, the memory grooves 141, 142, 143, 1 of the engagement protrusion 130 are formed.
The mating engagement with one of 44, 145, 146 is
Maintained.

(6-2) Position Detection Sensor Then, on the chassis 1, an initial position detection switch 96 serving as detection means is arranged. The initial position detection switch 96 detects that the memory lever 123 is in the initial position by being pressed by the operating rod portion 128 of the memory lever 123. That is, the initial position detection switch 96 is shown in FIG.
Also, as shown in FIG. 5, when the memory lever 123 is at the initial position, it is pressed by the operating rod portion 128.

Then, this initial position detection switch 96
6 to 9, the sub tray holder 52 accommodating the sub tray 87 is moved to the unchucking position or the chucking position, and the memory lever 123 follows the elevating lever 14. When being rotated, the pressing operation by the operation rod portion 128 is released.

That is, in the memory lever 123, as shown in FIG. 5, the sub-tray holder 52 accommodating the sub-tray 87 returns to the disc selecting position, and the sub-tray 87 is accommodated in the disc stocker 87. At 77, when it reaches a position facing the originally stored position, it returns to the initial position. At this time, since the transport slider 17 is slid to the rear side, the pressing lever 118 is retracted to the support shaft 99 side, and the engaging protrusion 130 is moved to the memory groove. Do not release the engagement.

When the carrying slider 17 is slid forward and the sub-tray 87 stored in the sub-tray holder 52 is returned to the original position of the disc stocker 77, as shown in FIG. The pressing lever 118 is advanced to the side separated from the support shaft 99 to release the engagement of the engagement protrusion 130 with the memory groove.

Further, the chassis 1 is provided with first and second switches 94 (SW ₁ ) and 93 (SW ₂ ) for detecting the rotational angular position of the carrying cam gear 15. . These first and second switches 94 (S
W ₁ ), 93 (SW ₂ ) are pressed by ribs formed in a circular arc shape over a predetermined range on the bottom surface of the carrying cam gear 15 to detect the rotational angular position of the carrying cam gear 15.

Further, a third switch 95 (SW ₃ ) for detecting the rotational angular position of the main tray carrying arm 18 is arranged on the chassis 1. The third detection switch 95 (SW ₃ ) is pressed by a switch operation piece 49 provided on the main tray transfer arm 18.

The first to third switches 94 (S
By combining the detection results of W ₁ ), 93 (SW ₂ ), and 95 (SW ₃ ), as shown in FIG. 10, from the detection result of the _first switch 94 (SW ₁ ), the conveyance slider 17 can be detected. Has reached the front side, which is the side of the disk stocker 77, and the transport slider 17
Can reach the rear side, which is the side of the disc soil portion 2. The second switch 93
Based on the detection result of (SW ₂ ), the above-mentioned transport main tray 6
It can be detected that 9 has reached the discharge position.

Further, the third detection switch 95 (S
From the detection result of W ₃ ), it can be detected that the main tray 69 is in the storage position.

[7] Operation of Disc Changer Device In the disc changer device configured as described above, as shown in FIG. 4, the optical disc 201 does not exist in the disc stocker 77, and all the sub trays 87 have the discs. When an instruction to select a predetermined sub-tray 87 is given in the initial state of being stored in the stocker 77, the elevator mechanism moves the sub-tray holder 52 to a height position facing the selected sub-tray. It

Then, as shown in FIG. 5, the transport slider 17 is moved to the rear side and the selected sub-tray 8 is moved.
7 is stored in the sub tray holder 52.

Next, as shown in FIG. 6, the sub tray holder 52 is moved to the unchucking position. Then, as shown in FIG.
Is moved to the front side, and the selected sub-tray 87 is transferred from the sub-tray holder 52 to the main tray 69.

Then, as shown in FIG. 8, after the sub tray holder 52 is moved to the chucking position,
The main tray 69 is set to the discharge position. At this time, the optical disc 201 can be placed on the sub tray 87.

When an instruction is issued to return the main tray 69 to the storage position, as shown in FIG. 7, the sub tray holder 52 is set to the unchucking position after the main tray 69 is returned to the storage position. Done. And
As shown in FIG. 6, the carrying slider 17 is moved to the rear side, and further, as shown in FIG. 9, the sub-tray holder 52 is at the chucking position.

At this time, by the disk sensor 8,
The presence or absence of the optical disc 201 on the sub-tray 87 is detected. The detection result is stored in the memory. At this time, the optical disc 20 is placed on the sub-tray 87.
If No. 1 is placed and the optical disc 201 is reproduced, the reproduction is started as it is.

Further, here, the optical disc 201 is placed on the sub-tray 87, and the optical disc 20
If 1 is stored in the disc stocker 77, the sub tray holder 52 is returned to the disc selection position via the unchucking position, as shown in FIGS. At this time, the position of the sub-tray holder 52 is determined based on the detection result of the initial position detection switch 96, and as shown in FIG. 4, the sub-tray 87 is moved by moving the transport slider 17 to the front side. The optical disc 201 is placed and returned to its original position.

When the presence or absence of the optical disc 201 on the sub tray 87 is detected by the disc sensor 8,
If the optical disc 201 is not placed on the sub tray 87, the sub tray 87 is returned to the disc stocker 77. That is, as shown in FIGS. 6 and 5, the sub-tray holder 52 is returned to the disc selection position via the unchucking position. At this time, the position of the sub-tray holder 52 is determined based on the detection result of the initial position detection switch 96.
As shown in, the sub-tray 87 is returned to its original position by moving the carrying slider 17 to the front side.

When the optical disc 201 is already placed on the sub-tray 87 in the disc stocker 77, in order to reproduce the optical disc 201, as shown in FIG. 4, FIG. 5, FIG. 6 and FIG. The transport slider 17
Is moved to the rear side so that the sub-tray 87 is housed in the sub-tray holder 52, and the sub-tray holder 52 is lowered to the chucking position, whereby the optical disc 201 is mounted on the disc table 4. .

When the optical disc 201 is already placed on the sub-tray 87 in the disc stocker 77, the optical disc 201 can be ejected by the steps shown in FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG. As shown in FIG. 6, the sub-tray 87 is stored in the sub-tray holder 52 by moving the carrying slider 17 to the rear side, the sub-tray holder 52 is lowered to the unchucking position, and the carrying slider 17 is moved forward. By moving the sub tray holder 52 to the chucking position and moving the main tray 69 to the ejection position, the optical disc 201 can be taken out to the outside.

In this disc changer device, the memory slider 129 is the memory lever 1
23. The sub-tray holder 52 can be moved not only by sliding but also by turning, and the pressed piece member 133 can be turned by the memory slider 129. Even if a malfunction occurs in the operation, damage to the memory lever 123 and the like is prevented.

The malfunction of the moving operation of the sub-tray holder 52 is, for example, when the sub-tray holder 52 is moved to the upper side after being stored in the sub-tray holder 52, For example, when one sub-tray 87 is stored in the main tray 69, the sub-tray holder 52 is moved upward and returns to the disc selection position.

[0159]

As described above, in the disc changer apparatus according to the present invention, the disc stocker for holding a plurality of sub-trays for holding the recording discs in a stacked state and the sub-trays held by the disc stocker are provided. The disc selection mechanism that is movably supported in a direction and selectively faces one of the sub trays, and the disc selection mechanism is in a position that does not face any of the sub trays held in the disc stocker. A main tray facing the disc selection mechanism, a transport mechanism for transporting the sub-tray between the disc selection mechanism and the disc stocker, and between the disc selection mechanism and the main tray, and the transport mechanism. And a transfer cam for moving the main tray and a transfer cam for moving the disk selection mechanism. The moving lever to be operated, the memory engaging portion formed in the moving lever in a number corresponding to the number of the sub-tray, the position to engage with the memory engaging portion, and the memory engaging portion. When movably supported over the position for releasing the engagement and engaged with the memory engaging portion, it is moved along with the moving lever and does not engage with the memory engaging portion. At times, a memory lever that is maintained at the initial position and a detection unit that detects that the memory lever is at the initial position are provided.

The movement of the memory lever is controlled by the conveyance cam, and the engagement with the memory engagement portion is released only when the conveyance mechanism places the sub-tray in the disc stocker. Therefore, when the sub-tray is positioned outside the disc stocker by the transport mechanism, the sub-tray is engaged with the memory engaging portion and is moved following the moving lever.
Therefore, when the detection means detects that the memory lever has returned to the initial position, the movement lever has returned to the position when the disc selection mechanism selected the sub tray.

That is, according to the present invention, the sub-tray selected from the plurality of sub-trays held in the disc stocker can be surely placed in the original position in the disc stocker without complicating the structure and inducing the manufacture and assembly. It is possible to provide a disc changer device that can be returned.

Further, in the disc changer device according to the present invention, since the original position of the sub-tray selected from the plurality of sub-tray in the disc stocker is mechanically stored, after the power is once cut off. Also, the returning operation of returning the sub tray to the original position in the disk stocker is possible.

[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 an exploded perspective view showing a configuration of a main part of the disc changer device.

FIG. 3 is a vertical cross-sectional view from the side surface side schematically showing the configuration of the disc changer device.

FIG. 4 is a plan view schematically showing a configuration of a main part of the disc changer device.

FIG. 5 is a plan view schematically showing a main part of the disc changer device in a state where a sub tray is conveyed rearward.

FIG. 6 is a plan view schematically showing a main part of the disc changer device in a state where a sub-tray conveyed backward is moved downward.

FIG. 7 is a plan view schematically showing a main part of the disc changer device in which a sub-tray moved downward is accommodated in a main tray.

FIG. 8 is a plan view schematically showing a main part of the disc changer device in a state where a main tray accommodating a sub tray is moved to the front side.

FIG. 9 is a plan view schematically showing a main part of the disc changer device in a state where a sub tray is attached to a disc drive portion.

FIG. 10 is a time chart explaining the operation of the disc changer device.

[Explanation of symbols]

14 Elevating Lever 15 Conveying Cam Gear 17 Conveying Slider 52 Sub Tray Holder 58 Conveying Member 69 Main Tray 77 Disc Stocker 87 Sub Tray 96 Initial Position Detection Switch 123 Memory Lever 141, 142, 143, 144, 145, 146 Memory Groove 201 Optical Disc

Claims (1)

[Claims] 1. A disc stocker for holding a plurality of sub-trays for holding recording discs in a stack, and a disc stocker movably supported in a direction extending between the sub-trays held by the disc stocker. A disc selection mechanism that selectively opposes to each other; a main tray that opposes the disc selection mechanism when the disc selection mechanism is in a position that does not face any of the sub-tray held in the disc stocker; Between the disk selection mechanism and the disk stocker,
And a transport mechanism for transporting the sub-tray between the disc selection mechanism and the main tray, a transport cam for moving the transport mechanism and the main tray, and a movement operation of the disc selection mechanism. A moving lever that is operated to move, a memory engaging portion formed in the moving lever in a number corresponding to the number of the sub trays, a position for engaging the memory engaging portion, and the memory engaging portion. Is movably supported over a position where the engagement with the memory is released, and when the memory engagement portion is engaged, the memory engagement portion is moved along with the movement lever and the memory engagement is performed. A memory lever that is maintained at the initial position when not engaged with the section, and a detection unit that detects that the memory lever is at the initial position. Ri is controlled to move, the conveying mechanism is the sub-tray only when you are in the disk stocker, the disk changer apparatus has been made and to be disengaged to the memory engaging portion.