JPH0755714Y2 - Disc stocker in disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The disk stocker in the disk reproducing apparatus of the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Overview of the device C. Background technology D. Problems to be solved by the device E. Means for solving the problem F. Example a. Disk stocker [Figs. 1 to 7] , Fig. 12, Fig.
18 to 20] a-1. Stock rack [Fig. 1 to 7, Fig. 12, Fig. 18 to 20] a-2. Extruding arm [Fig. 2 to 5, Fig. Fig. 19, Fig. 20
Figure] a-2-a. Push-out arm for large size disk a-2-b. Push-out arm for small size disk a-2-c. Operation a-3. Disk holding spring [Figs. 2 and 3 , Fig. 5, Fig.
Fig. 19, Fig. 20] a-4. Stock detection lever [Fig. 2, Fig. 3, Fig. 5,
FIG. 19 and FIG. 20] b. Playback section [FIGS. 1, 3, 7 and 18] c. Disc entrance and opening mechanism, etc. [FIGS. 1 to 3]
Fig., Fig. 7 to Fig. 9, Fig. 15] c-1. Disc entrance / outlet [Fig. 2, Fig. 7, Fig. 8 and Fig. 15]
Fig.] C-2. Opening / closing mechanism [Figs. 2, 7, 8, 15] c-3. Opening / closing detection switch [Figs. 7, 8] d. Outline of disk transport section [No. Figure 1, Figure 9, Figure 10, Figure
15 and 18] e. Cam slider and its moving mechanism [Figs. 1 to 3]
FIG. 7, FIG. 7 to FIG. 12, FIG. 15, FIG. 16, FIG. 18] e-1. Cam slider [FIG. 1 to FIG. 3, FIG. 7 to FIG. 12, FIG. Fig. 16 and Fig. 18] e-2. Movement of cam slider and elevator [Fig. 12] e-3. Relation between cam slider and elevator position with respect to disk storage chamber [Fig. 1, Fig. 7, Fig. [Fig. 18] e-4. Position detecting means such as a cam slider [Figs. 1 to 3 and 9 to 11] f. Disc transport unit [Figs. 1, 2, 7 and 10] 9 figures,
Fig. 10, Fig. 13 to Fig. 20] f-1. Elevator [Fig. 1, Fig. 2, Fig. 7, Fig. 9]
Fig. 10, Fig. 16, Fig. 18] f-2. Rotating chassis [Fig. 1, Fig. 2, Fig. 9, Fig. 10]
Figure, Figure 13 to Figure 18 f-3. Insertion guide plate [Figure 1, Figure 9, Figure 13 to Figure 15]
Fig. 18, Fig. 18] f-4. Pull-in roller [Fig. 1, Fig. 2, Fig. 9, Fig. 13 to Fig. 15, Fig. 18 to Fig. 20] f-5. Drive mechanism [First Fig. 2, Fig. 10, Fig. 16, Fig. 16] f-5-a. Structure [Fig. 1, Fig. 2, Fig. 10, Fig. 16] f-5-b. Switching of drive system [Fig. [Fig.16] f-5-c. Rotation of rotating chassis and retracting roller [Second
Fig. 16] f-6. Delivery of optical disc to disc transport section [18th
(A), FIG. 18 (B)] f-7. Chucking mechanism [FIGS. 1, 13, and 18] f-8. Disk positioning mechanism [FIG. 9, FIGS. 13 to 15]
Fig. 17, Fig. 17] f-8-a. Structure [Fig. 9, Fig. 13 to Fig. 15, Fig. 17] f-8-b. Action [Fig. 17] f-9. Insertion detecting means [Fig. Fig. 9, Fig. 14, Fig. 15, Fig. 17
[Fig.] F-10. Push-out arm pressing lever, disk presence / absence sensor [Figs. 2, 10, 19 and 20] f-10-a. Push-out arm pressing lever f-10-b. Disc presence / absence sensor g. Disc loading / unloading mechanism [Figs. 2, 3, 12 and 19]
Fig. 20, Fig. 20] g-1. Sending arm, returning arm [Fig. 2, Fig. 3,
Fig. 12, Fig. 19, Fig. 20] g-2. Swing gear, detection switch, etc. [Fig. 12] g-3. Operation [Fig. 12] h. Operation [Fig. 1, Fig. 3, Figure 7, Figure 9, Figure 15, Figure
Fig. 16 (B), Fig. 16 (C), Fig. 18 (B), Fig. 18 (C), Fig. 19, Fig. 20] h-1. Storage of optical disc in disc stocker [First
Fig. 7, Fig. 15, Fig. 16, Fig. 16 (B), Fig. 16 (C),
Fig. 20] h-2. Ejecting the optical disc from the disc stocker [No.
Fig. 18 (B), Fig. 19] h-3. Chucking and reproduction [Fig. 3, 9, 18 (C)] h-4. Other operations G. Effect of device (A. Industry The present invention relates to a disc stocker in a novel disc reproducing device. More specifically, the present invention relates to a disc stocker in which a large number of disc storage chambers for individually storing a plurality of recording medium discs are arranged in a hierarchy, and by devising the size and arrangement mode of the disc storage chambers,
A disc stocker in a new disc reproducing apparatus that can accommodate recording medium discs of different sizes in a mixed manner and can improve the utilization efficiency of the space inside the stocker to reduce the outer shape. It is the one we are trying to provide.

(B. Outline of the Invention) The disk stocker in the disk reproducing apparatus of the present invention has a disk storage chamber for a large-sized recording medium disk and a disk storage chamber for a small-sized recording medium disk alternately and hierarchically. At least a part of a required mechanism such as a disc loading / unloading mechanism is arranged in a portion outside the small size disc storage chamber in a space between two large size disc storage chambers which are arranged in a large number and are adjacent to each other across the small size disc storage chamber. By arranging them, recording medium disks of different sizes can be mixedly accommodated, and the utilization efficiency of the space inside the stocker can be improved to reduce the outer shape. .

(C. Background Art) There are various types of disc playback devices, one of which is
On the other hand, a so-called so-called "removable disk stocker, in which a large number of recording media disks are stored in advance in the housing, and any of the recording media disks is taken out from the disk stocker to the reproducing section for reproduction. There is an automatic changer type, and for example, an automatic disc exchange type CD player is configured in this way.

A disc stocker in such a disc reproducing apparatus is usually formed by arranging a number of disc storage chambers in each of which one recording medium disc is stored in a hierarchical manner, and stores the stored recording medium discs in the disc. A disc loading / unloading device including a member for pushing out from the storage chamber to, for example, the disc transporting unit, and a member for completely storing the recording medium disc sent from the disc transporting unit toward the disc storage chamber in the disc storage chamber. Mechanisms and other required mechanisms are provided.

By the way, there are various types of recording medium discs today, such as an optical disc, a magnetic disc, and a magneto-optical disc, and even recording medium discs of the same type usually have a plurality of sizes. However, their sizes vary, such as 8 cm, 12 cm, and 30 cm in diameter.

In addition, a recent disk reproducing apparatus has a so-called compatible function that allows a plurality of recording medium disks having different sizes to be selectively used if the recording and reproducing systems are the same. This is also the case with the above-mentioned auto-changer type disc reproducing apparatus.

(D. Problem to be Solved by the Invention) However, the conventional disc stocker has been designed so that it can store only recording medium discs of the same size.

Therefore, if there are plural sizes of recording medium discs that can be used in the disc reproducing apparatus, two or more types of disc stockers are prepared. For example, in the automatic disc exchange type CD player, the diameter is 12
There are several types of disc stockers such as a disc stocker dedicated to storing a centimeter optical disc and a disc stocker dedicated to storing an optical disc having a diameter of 8 cm, which causes the price of the disc stocker to be high. In addition, the user of the disc reproducing device has to replace the disc stocker every time the size of the recording medium disc to be reproduced changes, which causes a problem that the handling is extremely troublesome.

Further, in the conventional disc stocker, since the outer shapes of the respective disc storage chambers are the same, it is unavoidable to dispose the disc loading / unloading mechanism and the like outside the disc storage chamber. There is a problem that the size of the recording medium disk to be housed is considerably larger.

(E. Means for Solving the Problem) Therefore, in order to solve the above problems, the disk stocker in the disk reproducing apparatus of the present invention is designed for large size discs whose outer size varies depending on the size of the recording medium disc to be stored. A large number of disc storage chambers and small size disc storage chambers are arranged in an alternating manner, and a space between two large size disc storage chambers that are adjacent to each other across the small size disc storage chamber. Of these, at least a part of the required mechanism of the disc loading / unloading mechanism is arranged outside the small size disc storage chamber.

Therefore, according to the disc stocker in the disc reproducing apparatus of the present invention, a plurality of types of recording medium discs having different sizes can be mixedly stored in one disc stocker. Only one type can be used, or at least it can be reduced, and the disc stocker does not need to be replaced or at least the labor of replacement can be reduced when using the disc reproducing apparatus. Since at least a part of the mechanism necessary for the stocker of the kind is arranged in a part of the space inside the stocker which is not used for housing the recording medium disc, the outer shape thereof can be reduced.

(F. Embodiment) The details of the disk stocker in the disk reproducing apparatus of the present invention will be described below with reference to the illustrated embodiment.

In the illustrated embodiment, the disc stocker in the disc reproducing apparatus of the present invention is applied to the disc stocker in the optical disc player 1 which can selectively use two types of optical discs having different sizes.

(A. Disc stocker) [Figs. 1 to 7 and 12]
FIG. 18, FIG. 18 to FIG. 20] 2 is an optical disc 3 having a diameter of 12 cm (hereinafter referred to as “large size disc”) and an optical disc 4 having a diameter of 8 cm (hereinafter referred to as “small size disc”). A disk stocker that can be alternately and hierarchically stored in and taken out, and has five shelf blocks 5, each of which includes a flat stock shelf and two types of large and small extrusion arms rotatably supported on the stock shelf. It is configured by connecting 5 ... In a hierarchical manner, and a maximum of 5 large size disks 3 and 5 small size disks 4 each, and a total of 10 optical disks can be stored (10 in FIG. 1). It is shown in the stored state.).

The five shelf blocks 5, 5, ... Have the same structure.

(A-1. Stock shelf) [Figs. 1 to 7, Fig. 12, Fig.
18 to 20] 6 is a stock shelf in which each part is integrally formed of synthetic resin.

Reference numerals 7 and 8 denote the upper and lower plates of the stock shelf 6, which are the front and rear directions (the front side in FIG. 1 is the front, the direction toward the paper spine is the rear side, and the direction toward the left in FIG. The left side and the rightward direction are the right side, the upward direction is the upper side, and the downward direction is the lower side. In the following description, the direction is referred to as this direction. 3 has a width substantially the same as the diameter of 3 and is slightly longer than the diameter in the left-right direction, and has a relatively large notch 7a having a substantially U-shape that is open at the left end edge thereof.
8a is formed, and the right ends of the front and rear side edges are curved in a convex arc shape. And these upper plate 7 and lower plate 8
Are vertically opposed to each other with a gap substantially the same as the thickness of the large-sized disc 3 and their side edges are connected by side walls 9 and 9, whereby the upper plate 7 and the lower plate 8 are connected.
A thin space 10 (hereinafter referred to as "large size disc storage chamber") that has a substantially U-shaped horizontal cross section and is open at both left and right ends.
Say ) Has been formed.

The large-sized discs 3 are stored in the large-sized disc storage chambers 10, 10, ...
As shown by the solid line in FIG. 19 (A), the first size disc 3
Until the outer peripheral edge of the side wall abuts on the inner surface of at least one of the side walls 9 and 9 having an arc shape.

Further, on the lower surface 8b of the lower plate 8, two partition ridges 11 and 11 having substantially the same height as the thickness of the small size disc 4 (this thickness is the same as the thickness of the large size disc 3) are formed. The partition ridges 11, 11 are arranged on both front and rear sides of the cutout portion 8a, and most of them except for the right end portion thereof are separated from each other in the left-right direction with a distance substantially the same as the diameter of the small size disc 4. Parallel to each other, and the right end portion is curved in an arc shape toward the cutout portion 8a.

Further, on the upper surface 7b of the upper plate 7, alignment ridges 12, 12 having the same height as the partition ridges 11, 11 are formed, and these alignment ridges 12, 12 are seen from above. Partition ribs 11,
It is formed so as to be in contact with each of the outer side surfaces of 11.

Reference numerals 13 and 13 respectively denote connecting projections formed on both front and rear ends of the left end of the upper surface 7b of the upper plate 7, and 14 and 14 respectively correspond to the connecting projections 13 and 13 on the lower surface 8b of the lower plate 8. The connecting pieces (see FIG. 6) are formed at the above positions, and the connecting pieces 14, 14 are formed so as to have a substantially L shape when viewed from the front-rear direction. Numerals 15 and 15 are cylindrical spacers formed so as to partly project laterally at the right ends of the front and rear side surfaces of the stock shelf 6, and the upper part thereof projects slightly upward from the upper surface 7b of the upper plate 7. .

And such five stock shelves 6, 6, ...
The lower part of the connecting piece 14, 14 of one stock shelf 6
Holes 13 formed in the protruding ridges 13, 13 of the two stock shelves 6
a, 13a, and by axially butting the tubular spacers 15, 15 with the tubular spacers 15, 15 of the other stock shelves 6, the other stock shelves 6 are sequentially superposed. , The front cylindrical spacers 15, 15, ... and the rear cylindrical spacers 15, 15, ... by inserting connecting rods, for example, bolts 16, 16 into the ends of these bolts 16, 16, respectively. It is integrated by tightening a nut (not shown) to the portion.

It should be noted that the alignment between the two stock shelves 6 and 6 which are superposed on each other is performed by the partition ridges of one of the stock shelves 6.
11 and 11, the alignment ridges 12 and 12 of the other stock shelf 6 are in contact with each other from the outside and the cylindrical spacers 15 and 15,
.. is made by aligning the connecting rods 16 and 16 coaxially in the vertical direction.

And the five stock shelves 6 integrated in this way,
6 are fixed to the right half of the upper surface 18 of the main chassis 17 having a substantially rectangular shape that is long in the left-right direction.

The stock shelves 6, 6, ... Have a space between the two adjacent ones, which is approximately the same as the height of the partition ridges 11, 11, that is, the thickness of the small size disc 4. In this state, they are connected in a hierarchical manner, so that the horizontal cross-sectional shape is substantially U-shaped between two adjacent stock shelves 6 and 6 and between the bottom stock shelf 6 and the upper surface 18 of the main chassis 17. And a thin space 19, 19, ...
(Hereinafter, referred to as "small size disc storage chamber") are formed in total of five.

Each of the small size discs 4 is stored in such a small size disc storage chamber 19, 19 ,.
As shown by the solid line in FIG. 19 (B), the outer peripheral edge of the small size disk 4 is brought into contact with the inner surface of at least one arc-shaped right end portion of the partition ridges 11, 11.

Then, the disk stocker 2 is alternately arranged for large size disks and small size disks, and a total of 10 disk storage chambers 10, 10, ... And 19, 19,
... is formed.

The large-sized disc 3 that has been stored in the large-sized disc storage chamber 10 and the small-sized disc 4 that has been stored in the small-sized disc storage chamber 19 have their left end positions substantially aligned.

Further, in the following description, the disk storage chambers 10, 10, ...
.. and 19, 19, ... When the upper and lower positions are specified and referred to, the uppermost disk storage chamber 10 is "1.
"Floor disk storage room", and downwards,
"Second floor disk storage room", "3rd floor disk storage room",
・ ・ It is called "10th floor disc storage room".

(A-2. Extrusion arm) [Figs. 2 to 5, Fig. 19 and Fig. 19]
[Fig. 20] 20 and 21 are push-out arms for pushing out the optical discs 3 and 4 housed in the disc storage chamber toward the disc transfer unit described later. One of the push-out arms 20 is for a large-sized disc 3. Yes, the other pushing arm 21 is for a small size disc 4.

(A-2-a. Push-out arm for large-sized disc) The push-out arm 20 for the large-sized disc 3 has a plate-like long arm 20a curved in an arc shape and extends from the front end of the long arm 20a. A short arm 20b located on a straight line passing through both ends of the substantially long arm 20a, a small spring hook 20c protruding from a position near the front end of a side edge farther from the arc center of the long arm 20a, and a short arm 20b. A pressing portion 20d protruding downward from a position near the front end portion of the left side edge is integrally formed, and a connecting portion between the long arm 20a and the short arm 20b is formed on the upper surface 7b of the upper plate 7 of the stock shelf 6. Of the short arm 20b, at least the pressing portion 20d of the short arm 20b is supported rotatably in a horizontal direction by a small support protrusion 7c that is provided at a position closer to the cutout portion 7a from the front diagonally right side.
The part on the tip side is positioned so as to project forward from the stock shelf 6.

Then, a small columnar push-out pin 22 is fixed to the lower surface of the rotation end of the long arm 20a, and a pressed pin 23 also small in columnar shape is fixed to the lower surface of the rotation end of the short arm 20b. The lower part of 22 is inserted into a circular cut groove 7d formed in the rear right half of the upper plate 7 of the stock shelf 6 and projects into the large-sized disc storage chamber 10 (see FIG. 4) 24. It is a toggle spring with a substantially scissor spring, and one arm
The tip of 24a is locked to the spring hook piece 20c of the pushing arm 20,
The tip end of the other arm 24b is locked in a small hole 7e formed in the right end portion of the upper plate 7 at a position closer to the diagonally right rear from the support protrusion 7c. Thus, the pushing force is applied to the pushing arm 20 in the clockwise direction or the counterclockwise direction when viewed from above. That is, the push-out arm 20 has a spring hook piece 20c on the straight line connecting the tip of the other arm 24b of the toggle spring 24 and the support projection 7c as a boundary point, and is on the counterclockwise direction side thereof. When it is coming, the counterclockwise turning force is applied,
When it is on the clockwise side from the boundary point, the turning force in the clockwise direction is applied.

In addition, such an extrusion arm 20 has a position where the extrusion pin 22 is in contact with the left end of the cut groove 7d (hereinafter, referred to as "extrusion completion position"), as shown by a two-dot chain line in FIG. 19 (A). The position where the pressing pin 22 abuts the right end of the cut groove 7d as shown by the solid line in FIG. Position ".)
When the push-out arm 20 is in the storage completion position, the lower portion of the push-out pin 22 is located below the large-sized disc storage chamber 10 when the push-out arm 20 is in the storage completion position.
When the pushing arm 20 reaches the pushing completion position, it is positioned so as to approach or lightly contact the outer peripheral edge of the large-sized disc 3 which has been completely stored in
The push-out pin 22 is located at a substantially middle position in the left-right direction of the large-sized disc storage chamber 10.

(A-2-b. Push-out arm for small size disc) The push-out arm 21 for the small size disc 4 has a long arm 21a having a relatively gently curved plate shape and a short continuous arm at the front end of the long arm 21a. The spring hook piece 21c protruding leftward from the front end of the arm 21b and the long arm 21a and the pressing portion 21d raised from the position near the front end of the short arm 21b are integrally formed, and the front end of the long arm 21a near the front end. Is the lower surface 8 of the lower plate 8 of the stock shelf 6.
A portion of the short arm 21b at least from the pressing portion 21d to the tip end side of the short arm 21b is supported rotatably in a horizontal direction by a small support protrusion 8c that is provided at a position closer to the right end of the cutout portion 8a than the front side. Is located so as to project forward from the stock shelf 6.

A small columnar push-out pin 25 is fixed to the upper surface of the rotating end of the long arm 21a, and a pressed pin 26 is fixed to the upper surface of the rotating end of the short arm 21d. In addition, since the rotation end of the long arm 21a is located at a position slightly lower than the rest, the push pin 25 has the same plane as the partition ridges 11 and 11 formed on the lower surface of the stock shelf 6. , And the stock shelves 6, 6, ... Are sequentially stacked, the push pins 25, 25 ,. ··· Located at the same height as (see Figure 4).

27 is a toggle spring having the same function as that of the toggle spring 24. The tip of one arm 27a is locked to the spring hook 21c of the pushing arm 2 and the tip of the other arm 27b is on the front side of the lower plate 8. It is locked in a small hole 8d formed at a position of the support projection 8c, which is inclined to the front left approximately diagonally. The elastic force of the toggle spring 27 causes the pushing arm 21 to rotate clockwise when viewed from above. The turning force in the clockwise or counterclockwise direction is applied. That is, the push-out arm 21 has a spring hook piece 21c located on a straight line connecting the tip of the other arm 27b of the toggle spring 27 and the support protrusion 28c as a boundary point, and is located in the counterclockwise direction from the intermediate point. When it is coming, counterclockwise turning force is applied, and when it is coming to the clockwise direction side from the boundary point, clockwise turning force is applied.

Further, such a pushing arm 21 is shown in FIG.
As shown by the dotted line, the position of the long arm 21a near the rotation fulcrum is in contact with the right end of the front partitioning ridge 11 formed on the lower surface 8b of the lower plate 8 (hereinafter, "extrusion completion position"). Is prevented from rotating further in the counterclockwise direction, and as shown by the solid line in the figure, the pressing portion 21d is substantially left-right in the front edge of the stock shelf 6. When it reaches the position where it comes into contact with the intermediate portion (hereinafter referred to as the "storage completion position"), it is prevented from rotating further clockwise, and the pushing arm 21 is in the storage completion position. In this state, the push-out pin 25 is positioned so as to approach or lightly contact the outer peripheral edge of the small-sized disc 4 housed in the small-sized disc disc storage chamber 19 from the oblique rear right, and the pushing-out arm 21 is brought to the pushing-out completion position. When cut, the push-out pin 25 will move the small size disk storage chamber 19 Is located at a substantially intermediate position in the left-right direction.

(A-2-c. Operation) Then, the pushing arms 20, 20, ... And 21, 21, ...
When the optical disk is inserted into the disk storage chamber from the state where the optical disk is at the push-out completion position, the push-out pins 22, 22, ..., 25, 25 ,. Since it is pressed toward the right by, it is moved toward the storage completion position and toggle springs 24, 24, ...
27, 27, ... is held in that position by the elastic force, and from this state, the pressed pins 23, 23 ,.
26, ... are pushed rightward at least up to a position beyond the boundary point toward the push-out completion position side (this push is made by a push-out arm pushing lever which will be described later) to the push-out complete position. Then, the optical disk is pushed toward the left from the disk storage chamber by about one-third or about half, and is held at the extrusion completion position.

The push arms 20, 20, ... And 21, 21, ... Are all positioned at the push complete position at least when the assembly of the optical disk player 1 is completed.

By the way, since the large size disc storage chambers 10, 10, ... And the small size disc storage chambers 19, 19, ... Are alternately arranged and arranged in a hierarchy, one small size disc storage chamber 19 is sandwiched between them. Two large-sized disc storage rooms adjacent to each other
In the space between 10 and 10, there is a so-called dead space portion outside the small-sized disc storage chamber 19 for storing discs.

However, the extrusion arms 20, 20, ... And 21, 21, ...
, Are supported on the stock shelves 6, 6, ... As described above, so that when these stock shelves 6, 6, ... Are combined, the extrusion arms 20 and 21 are respectively provided in the above spaces. 1
It will be arranged one by one.

Since the two pushing arms 20 and 21 located in the same space are slightly different from each other in the vertical direction, they do not interfere with each other even if they partially overlap each other.

Thus, the pushing arms 20, 20, ... And 21, 21, ...
Is placed by utilizing a portion of the space of the disc stocker 2 that is not used for storing the disc, so that the planar shape of the disc stocker 2 can be suppressed to the minimum size required for storing the disc.

(A-3. Disk holding spring) [Figs. 2, 3 and 5]
FIG. 19, FIG. 20, FIG. 20] 28 is a disk holding spring. The disc holding spring 28
Is a mounting portion 28a fixed to the rear side of the lower surface 8b of the lower plate 8 of the stock shelf 6 and extends from the rear side edge of the mounting portion 28a to the left along the rear side surface of the stock shelf 6. The rear elastic piece 28b positioned and the front elastic piece 28c positioned so as to extend leftward from the front edge of the mounting portion 28a are integrally formed,
Pressing portions 28d and 28e, which are bent so as to form a substantially C shape toward the front, are formed in substantially middle portions of the elastic pieces 28b and 28c, and the pressing portion 28d of the rear elastic piece 28b is formed on the stock shelf 6. It is positioned so as to project into the large-sized disc storage chamber 10 by being arranged in the notch 9a formed in the intermediate portion of the rear side wall 9, and the tip end of the pressing portion 28e of the front elastic piece 28c. Is positioned so as to project into the small-sized disc storage chamber 19 through the discontinuity 11a formed on the partition rib 11 on the rear side.

Then, when the large-sized disc 3 is stored in the large-sized disc storage chamber 10 to the storage completion position, the holding portion 28d is formed at a position on the left side of the outer peripheral edge of the large-sized disc 3 facing right behind. It is relatively elastically contacted, and similarly, the small disc 4 is placed in the small disc storage chamber 19.
The small size disc 4 when the
The holding portion 28e is relatively elastically contacted with a portion on the left side of the outer peripheral edge portion of the outer peripheral edge of the optical discs 3 and 4 which has been stored in the disc storage chamber. It is made so that it does not easily leave the room.

Since the optical discs 3 and 4 are stored in the disc storage chambers 10 and 19 in such a state, when they are ejected from the disc storage chambers 10 and 19 and stored in the disc storage chambers 10 and 19, In the middle of the process, the elastic piece 28b or 28c is temporarily pushed backward and moved.

(A-4. Stock detection lever) [Figs. 2, 3 and 5]
FIG. 19, FIG. 20, FIG. 20] 29 is the optical disk 3 or 4 in the disk storage chamber 10 or 19
Is a stock detection lever for detecting by a detection means provided in the elevator to be described later whether or not is stored, and has a narrow plate shape that is long in the left-right direction and has a left end portion 29a.
A portion near the end is bent in a substantially crank shape when viewed from above, and a stopper protrusion 29b is formed on the front side surface at a position near the right end.

The small insertion holes 30a, 30a, ... and the stock shelves are provided in the projecting pieces 30, 30, ... protruding forward from the left end portion of the front side surface of the stock shelves 6, 6 ,. 6,
6 are combined and these projecting pieces 30, 30, ... Are stacked in the vertical direction, so that the insertion holes 30a, 30
Notches 30b, 30b, ...
Is formed, and the stock shelves 6 are formed on the projections 31, 31, ... Protruding from the front side of the stock shelves 6, 6 ... , 6, ...
.. through the insertion holes 30a, 30a ,.
.. and engaging grooves 31a, 31a, ... Corresponding to the notches 30b, 30b, .., respectively, and the stock detection levers 29, 29, .. Holes 30a, 30
a, ... Or notches 30b, 30b, ... Slidingly inserted, and at the right end thereof the engaging grooves 31a, 31a,
... is slidably engaged with.

Numerals 32, 32, ... Are coil springs, which are fitted onto the left end portions of the stock detection levers 29, 29, ... And form a crank shape of the stock detection levers 29, 29 ,. It is compressed between the middle portion of the portion and the projecting pieces 30, 30, .... In addition, this coil spring 32, 3
The elastic forces of 2, ... Are smaller than the elastic forces of the toggle springs 24, 24 ,.

Therefore, the stock detection levers 29, 29, ... Are constantly biased by the elastic force of the coil springs 32, 32 ,. If not, as shown in FIG. 20, the stopper projection 29
.. are held at the positions (hereinafter, referred to as "non-stored positions") where the protrusions 31, 31 ,.

Then, such stock detection levers 29, 29, ...
Are pressing portions 20d, 20d of the pushing arms 20, 20, ...
..Or pressing portions 21d, 2 of the pushing arms 21, 21, ...
1d, ... are respectively located at the same height, and when the pushing arms 20, 20, ..., 21, 21, .. Parts 20d, 20
.. or 21d, 21d, ... Abuts on the right end of the stock detection levers 29, 29, ... and presses it toward the left, whereby the stock detection levers 29, 29,・
······················ To move to the position shown in FIG.

However, the stock detection levers 29, 29, ... Are coil springs 32, 32, while the corresponding pushing arms 20, 20, ... Or 21, 21, ..
The coil springs 32, 32 are held in the retracted position against the elastic force of ... and the push arms 20, 20, ... or 21, 21, ... move to the push complete position. , ...
・ It is moved to the non-stored position by the elastic force of.

(B. Playback Section) [FIG. 1, FIG. 3, FIG. 7, FIG. 18] Reference numeral 33 is a playback section for playing back the signal recorded on the optical disk 3 or 4, and is an upper surface 18 of the main chassis 17. It is provided in the left half of the.

Reference numeral 34 is a turntable on which the central portion of the optical disk 3 or 4 is detachably mounted, and is fixed to a rotary shaft 35a of a spindle motor 35. Reference numeral 34a is a centering guide that is provided so as to project from the center of the upper surface of the turntable 34.

The upper surface of the turntable 34 is located at a height slightly lower than the lowermost 10th floor disc storage chamber 19 among the 10 disc storage chambers 10, 10, ... And 19, 19 ,. Is provided.

Reference numeral 36 is an optical pickup, which faces the optical disk 3 or 4 mounted on the turntable 34 from below relatively,
Moreover, the optical disk 3 or 4 is moved by a moving means (not shown)
It is designed to be moved in the radial direction.

(C. Disk entrance / exit and its opening / closing mechanism, etc.) [FIGS. 1 to 3, 7 to 9 and 15] 37 and 38 are provided on the main chassis 17 separately from the front and rear edges thereof. A wall-shaped chassis (not shown in FIGS. 1 and 8) that is fixed so as to stand upright, has a substantially rectangular plate shape that is long in the left-right direction when viewed from the front-rear direction, and has a front-side wall shape. An elongated hole 37a (see FIG. 2) elongated in the left-right direction is formed in the upper end portion of the chassis 37 on the left side of the disc stocker 2.

(C-1. Disk entrance / exit) [Fig. 2, Fig. 7, Fig. 8
[Fig. 15] 39 is an entrance / exit frame, which has a plate shape that is long in the left-right direction, and has an opening 39a that is elongated in the left-right direction and slightly longer than the diameter of the large-sized disc 3 in the center in the width direction. The opening edge projecting rearward of the opening 39a is fixed to the front surface of the wall-shaped chassis 37 in a state of being fitted exactly into the long hole 37a formed in the front wall-shaped chassis 37.

Reference numeral 40 denotes an outer casing of the optical disc player 1. A front panel 41 thereof has an elongated opening 41a formed in the left-right direction, and an opening 39a of an entrance / exit frame 39 is closely opposed to the opening 41a from inside. The outer casing 40 of the optical disc 3 or 4 for the disc transfer unit described later by these openings 41a and 39a.
Disc entrance / exit 42 for external insertion and removal
Is configured.

In addition, this disk entrance / exit 42 is 1 of the disk stocker 2.
It is located at the same height as the floor disc storage room 10.

(C-2. Opening / closing mechanism) [Fig. 2, Fig. 7, Fig. 8 and Fig. 15]
[Fig.] 43 is a shutter for opening and closing the above-mentioned disc inlet / outlet 42, which has a width slightly wider than the width of the disc inlet / outlet 42, and is in the shape of an elongated plate in the left-right direction, and its left and right ends are the inlet / outlet frame members
It is slidably engaged in the up-down direction with engaging portions 39b protruding from both left and right ends of 39, whereby it is arranged so as to be vertically movable between the doorway frame 39 and the front panel 41. In addition, substantially oval connecting elongated holes 43a, 43a (see FIG. 8) are formed at the lower ends of the left and right ends thereof.

Reference numeral 44 is an opening / closing slider (see FIG. 8) also in the shape of a plate elongated in the left-right direction, and is arranged in a thin space between the lower portion of the entrance / exit frame 39 and the wall-shaped chassis 37. And
The open / close slider 44 is a guide pin projecting forward from the wall-shaped chassis 37 in the two guided long holes 44a, 44a.
The 45 and 45 are slidably engaged so that they are slidably supported in the left-right direction within a certain range, and the tension force of the tension spring 46 constantly urges the moving force to the right. In addition, elongated control holes 44b, 44b that are inclined downward to the left are formed at both left and right ends, and further, a substantially U-shape that opens from the left end of the lower edge toward the front side when viewed from above. As shown in FIG. 8 (A), while the pressed portion 44c to be formed is provided so as to project downward and is not pressed to the left,
The left end of each of the guided slots 44a, 44a is held at a position in contact with the guide pins 45, 45 (hereinafter, referred to as "right end position").

47 and 47 are shutter opening / closing arms (see FIG. 8),
One end thereof is rotatably supported by the guide pins 45, 45, and connecting pins 47a, 47a projecting forward are fixed to the rotating end, and further, substantially in the longitudinal direction thereof. Small controlled pin 47 fixed to the back of the middle part
b and 47b are elongated control holes 44 formed in the opening / closing slider 44.
The connecting pins 47a, 47a are slidably engaged with the b, 44b and the connecting elongated holes 43a, 43a of the shutter 43.

Therefore, when the opening / closing slider 44 slides, the control elongated holes 44b, 44b are moved to the controlled pins of the shutter opening / closing arms 47, 47.
Since 47b, 47b are pressed upward or downward, the shutter opening / closing arms 47, 47 are rotated substantially in the vertical direction, whereby the shutter 43 is moved in the vertical direction.

And while the open / close slider 44 is at the right end position,
The lower ends of the control long holes 44b, 44b are engaged with the controlled pins 47b, 47b of the shutter opening / closing arm 47, which causes the shutter 43 to move to the disk as shown in FIG. 8 (A). The doorway 42 is held at the closed position, and the open / close slider 44 is pushed to the left from that state, that is, the left end position shown in FIG. 8B, that is, the right end of the guided elongated holes 44a, 44a. Is moved to a position where it substantially abuts the guide pins 45, 45, the shutter opening / closing arms 47, 47 are rotated upward to open the shutter 43 in the open position shown in FIG. 8B, that is, the disc inlet / outlet 42 is opened. When the open / close slider 44 is released from the leftward pressure, the open / close slider 44 is moved to the right end position by the pulling force of the tension spring 46, whereby the shutter open / close arm is opened. 47, 47 down Is rotated shutter 43 is returned to the closed position to the.

In this way, the disc entrance / exit 42 is opened and closed.

The opening / closing slider 44 is pressed to the left by the pressed portion 44.
This is done by pressing c by a cam slider described later.

(C-3. Open / close detection switch) [FIGS. 7 and 8] 48 is an open / close detection switch attached to the front surface of the wall-shaped chassis 37, that is, whether the disk inlet / outlet 42 is open or closed. A switch for detecting the wall-shaped chassis 37 in which the pin plunger 48a extending in the left-right direction faces the pressed portion 44c of the opening / closing slider 44 from the left side.
Is attached to.

Then, while the open / close slider 44 is at the right end position, that is, while the shutter 43 is at the closed position, the pressed portion 44c is slightly separated from the pin plunger 48a. The switch 48 outputs a first signal, which detects that the disk inlet / outlet 42 is closed.

Further, when the opening / closing slider 44 moves from this state to the left end position, the pressed portion 44c presses the pin plunger 48a, whereby the opening / closing detection switch 48 outputs a second signal, which causes the shutter 43 to move. It is detected that the disc has moved to the open position, that is, the disc entrance 42 has been opened.

In this way, the open / closed state of the disc entrance / exit 42 is detected.

In this case, since the shutter 43 does not return to the closed position when the optical disc 3, 4 or other foreign matter is caught in the disc inlet / outlet 42, the opening / closing slider 44 is prevented from returning to the right end position, and the pin plunger 48a is removed. It remains pressed. Therefore, when the second signal is output from the open / close detection switch 48 despite the release of the open / close slider 44 to the left, it is detected that some foreign matter is caught in the disk inlet / outlet 42. To be done.

(D. Outline of disc transport section) [Fig. 1, Fig. 9, Fig. 10
FIG. 15, FIG. 18 and FIG. 18] 49 is a disc transport unit, that is, for selectively transporting the optical disc 3 or 4 among the disc stocker 2, the reproducing unit 33, and the outside of the outer casing 40. Yes, the wall-shaped chassis
An elevator 50 movably supported only in the vertical direction by 37 and 38, a rotary chassis 51 rotatably supported by the elevator 50 within a range of 90 °, and a vertical chassis parallel to each other facing the rotary chassis 51. The two insertion guide plates 52 and 53 are fixed to each other, and the pull-in roller 55 and the like arranged in the disk insertion port 54 formed by these insertion guide plates 52 and 53.

Two guided pins 56, 56, ... Are horizontally projected on both front and rear portions of the elevator 50, and these guided pins 56, 56 ,. It is slidably engaged with a cam groove formed by the cam, and the disc slider 49 is stepwise moved in 11 steps in the vertical direction by moving the cam slider in the left and right directions.

Further, the rotating chassis 51 has, for example, a position where the disc insertion port 54 is directed to the right as shown in FIG. 1 (hereinafter referred to as "stocker facing position") and a disc insertion port 54 as shown in FIG. It is rotated between a position facing forward (hereinafter, referred to as a "doorway facing position"), and such a rotation is performed when the disc transport unit 49 is at the uppermost stage of its 11 movement stages. Only in.

(E. Cam slider and its moving mechanism, etc.) [FIGS. 1 to 3, FIG. 7 to FIG. 12, FIG. 15, FIG. 16, and FIG. 18] 57 and 58 are cam sliders.

(E-1. Cam Slider) [FIGS. 1 to 3, FIG. 7 to FIG. 12, FIG. 15, FIG. 16, FIG. 18] The cam sliders 57 and 58 are substantially rectangular long in the left-right direction. A rack that is formed into a plate shape and that has two guided grooves 57a, 57a, 58a, 58a extending in the left-right direction in the upper or lower portions thereof and extends in the left-right direction at a position near the right end thereof. 57b and 58b are formed and the front cam slider
In the guide groove 57a, 57a, guide pins 59, 59 projecting forward from the front wall-shaped chassis 37 are slidably engaged with the guide grooves 57a, 57a. Guide walls 59, 59 projecting rearward from the rear wall-shaped chassis 38 are slidably engaged with the guided grooves 58a, 58a, respectively, so that these wall-shaped chassis 37, 38 respectively. It is designed to be movable in the left-right direction within a certain range.

In addition, the upper left end surface 57c of the front cam slider 57 (hereinafter,
It is called the "pressing end face". ) Faces the pressed portion 44c of the opening / closing slider 44 from the right side.

The cam sliders 57 and 58 are formed with cam grooves 60, 60, ... Having the same structure at two positions spaced apart from each other in the left-right direction on the surfaces facing each other. Most of the portions 60, ... Extend along the position inclined to the lower left, and are formed so as to form a substantially staircase pattern in which a large number of steps are continuous.

That is, the upper end portion 60 ₁ (hereinafter, referred to as “first stage”) of the cam groove 60 is formed to be elongated in the left-right direction, and the cam groove 60 continues to the _first stage 60 ₁ and is left at a constant gradient from there. The part extending in the direction inclined downwards is 10 in total including the bottom part.
The stages 60 ₂ , 60 ₃ , ... 60 ₁₁ are consecutively arranged in this order from the top, and the height difference between two adjacent stages of these stages 60 ₁ , 60 ₂ , ... 60 ₁₁ is All are the same, and the sizes are the disk storage chambers 10, 19, 10 of the disk stocker 2,
The arrangement pitch of 19, ... And the height difference between the turntable 34 and the disc storage chamber 19 on the 10th floor are the same.

In addition, each step from step 60 _{2 to} 60 ₁₁
They are called "2nd stage", "3rd stage", ... "11th stage".

In addition, the left end of the front surface of the rear cam slider 58 is the third
As shown in the figure, it is cut out shallowly, and an engaging recess 58c is formed on the upper end surface of this portion.

Reference numeral 58d is a switch pressing piece that horizontally protrudes forward from a position near the right end of the upper end portion of the cam slider 58 on the rear side.

(E-2. Movement of cam slider and elevator) [12th
[Fig. 61] 61 is a moving mechanism for moving the two cam sliders 57 and 58 in synchronization with each other.
Is located on the underside of.

Reference numeral 62 denotes a rotary shaft that is rotatably supported by the main chassis 17, extends in the front-rear direction, and has pinion gears 63 at both ends thereof.
63 is fixed, and these pinion gears 63, 63 are individually meshed with the racks 57b, 58b of the cam sliders 57, 58, respectively.
A reduction gear portion 63a is formed integrally with the rear pinion gear 63.

Reference numeral 64 denotes a gear chassis, which is fixed to a portion of the lower surface of the main chassis 17 which is biased to the rear side so as to face each other with a gap therebetween, and is provided at the rear end of the right end of the gear chassis 64. A motor 65 for moving the cam slider is fixed, and a worm 66 is fixed to the rotating shaft of the motor 65. A worm wheel 67a rotatably supported on the rear end of the gear chassis 64 is meshed with the worm 66, and a small gear 67b integrally formed with the worm wheel 67a is rotatably mounted on the gear chassis 64. A small gear 68b meshed with the supported reduction gear 68a and integrally formed with the reduction gear 68a meshes with the reduction gear 63a of the pinion gear 63.

Then, when the motor 65 rotates, the rotation is warmed.
66-Warm Wheel 67a-Small Gear 67b-Reduction Gear 68a-
Small gear 68b-rear side pinion gear 63-Rotating shaft 62 is transmitted by rotating shaft 62, whereby two pinion gears 63, 63 are rotated in synchronization, so that the cam slider
57 and 58 racks 57b and 58b are sent in the same direction at the same time,
Therefore, the two cam sliders 57 and 58 are moved in the left-right direction in synchronization with each other.

The two guided pins 56, 56 provided on the front and rear sides of the elevator 50 are formed in the wall-shaped chassis 37, 38 and extend in the vertical direction. Figure 3,
(See FIG. 7), so that the disk carrier 49 is supported by the wall-like chassis 37, 38 so as to be vertically movable, and the guided pin is
The tips of the cams 57, 58 of the cam sliders 57, 58 project outward from the cut grooves 69, 69 ,.
・ Slidingly engaged with each.

Therefore, when the cam sliders 57 and 58 move, the steps of the cam grooves 60, 60, ... In which the guided pins 56, 56, ... Of the elevator 50 are supported are sequentially moved to higher or lower levels. It changes to the one on the floor, so that the disc transport unit 49 moves up and down as if following the floor.

(E-3. Relationship between the position of the cam slider and the elevator and the disc storage chamber, etc.) [FIG. 1, FIG. 7, FIG. 18] The positions of the cam sliders 57 and 58 and the disc transport portion 49 are as follows. Disk storage room 10, 10, ..., 19,
The relationship with the reproducing unit 33 and the disc entrance / exit 42 is as follows.

That is, the cam sliders 57 and 58 are shown in FIG.
As shown in FIG. 7, at three positions (hereinafter, referred to as “supporting pins 56, 56, ...” of the elevator 50 at the left end, middle part, or right end of the first step 60 ₁ of the cam groove 60). The position where the guided pin is supported at the left end is called the "first floor position", the position where it is supported at the middle is called the "B _first floor position", and the position where it is supported at the right end is called the "B _second floor position". To tell.)
When any of the above is set, the disc transporting unit 49 is held at the uppermost position, that is, the disc insertion port 54 is held at the same level as the first floor disc storage chamber 10 and the disc inlet / outlet 42 of the disc stocker 2. , guided pins 56, 56 in the second stage 60 ₂ of the cam slider 57 and 58 that the cam groove 60, -
.. When it comes to the position for supporting (hereinafter, referred to as "second floor position"), the disc carrier 49 holds the disc insertion port 54 at the same height as the second floor disc storage chamber 19, and hereinafter, the cam groove.
A position for supporting the guided pins 56, 56, ... In each stage from the third stage 60 _{3 of the} 60 to the 10th floor position 10 ₁₀ (hereinafter, referred to as “3
"Floor position", "Fourth floor position", ... "10th floor position". ), The disc carrier 49 has the disc insertion port 54 at the third floor disc storage chamber 10, the fourth floor disc storage chamber 19,
..., which are kept at the same height as the disc storage chamber 19 on the 10th floor, and the cam sliders 57 and 58 are guided pins 56 and 56 at the eleventh stage 60 ₁₁ as shown in FIG. 18 (C). ...
When it comes to a position (hereinafter, referred to as “11th floor position”) for supporting the disk, the disk transport unit 49 causes the optical disk 3 or 4 held by the disk transfer section 49 to be relatively moved to the turntable 34, as shown in FIG. It is held at a chucking position (hereinafter referred to as "chucking position").

The rotation of the rotary chassis 51 is performed in a state in which the cam slider 57, 58 is coming to the B ₁ floor position.

(E-4. Position detecting means such as a cam slider) [FIGS. 1 to 3 and 9 to 11] 70 is a reference position detection switch (see FIGS. 2 and 3), which is pressed. The wall-shaped chassis 3 on the rear side is provided with a pressed piece 70a that switches the connection state of the contact depending on whether it is pressed or not.
8 is fixed to the upper end right end of the front surface of the pressed piece 70a is pressed by the switch pressing piece 58d provided on the rear cam slider 58, the pressing cam slider 57, 58 is the ground floor position and B ₁ floor It is supposed to be done when it comes to the position.

Further, an elongated floor number detection plate 71 is horizontally projected from the lower edge of the rear cam slider 58 in the left-right direction, and is arranged on the floor number detection plate 71 at a constant pitch in the left-right direction.
Individual light-transmitting notches 71a, 71a, ... Are formed.

Note that these translucent notches 71a, 71a, the arrangement pitch of ... are from the B ₂ floor position of the cam slider 57, 58 to 11 floor position
It has the same size as the fixed array pitch of 13 positions.

Reference numeral 72 denotes a floor detection sensor, which is fixed to the main chassis 17 so that the floor detection plate 71 can move between a light emitting element 72a and a light receiving element 72b which are arranged so as to face each other. The slider 58 is moved so that the translucent notch 71a of the floor detection plate 71 has a light emitting element 72a and a light receiving element 72b.
One pulse signal is output each time it is located between and.

Then, a predetermined signal from the reference position detection switch 70 when the cam sliders 57 and 58 move to the left, that is,
When pressed piece 70a had the first output of the pulse signal from the rank detection sensor 72 after the signal when it is pressed is output, there when the cam slider 57, 58 has reached the _first floor position B By detecting the output state of such a signal, it is detected that the cam sliders 57, 58 have reached the reference position, and the rotation direction of the motor 65 and the floor detection sensor 72 from that state are output. By counting the number of pulse signals, the cam sliders 57, 58
Is currently detected, in other words, on which floor the disk transport unit 49 is.

(F. Disc transport section) [Fig. 1, Fig. 2, Fig. 7, Fig. 9
Fig. 10, Fig. 13, Fig. 13 to Fig. 20] (f-1. Elevator) [Fig. 1, Fig. 2, Fig. 7, Fig. 9]
FIG. 10, FIG. 16, FIG. 18, FIG. 18] The elevator 50 has a substantially rectangular flat plate-shaped main portion 73 and the main portion 73.
Narrow side pieces 7 protruding downward from both front and rear ends of
4 and 75 are integrally formed by a metal plate, and the front side piece 74
Is formed longer to the right than the rear side piece 75, and these side pieces 7
Guided pin 5
6, 56, ... are projected.

Reference numeral 76 denotes a sun gear supporting portion that forms a substantially central portion of the main portion 73, has a substantially keyhole-like outer shape, and is only partially continuous with the remaining portion of the main portion 73, and from the remaining portion. It is formed so as to be located at the bottom, and a circular hole 76a is formed in the center thereof.

Then, the motor mounting piece 73a is provided at a position near the rear end of the left side portion of the main portion 73, and the sensor mounting piece 73b is provided from the front end portion of the right side edge.
Are respectively projected downward.

(F-2. Rotating chassis) [Fig. 1, Fig. 2, Fig. 9, Fig.
10, FIG. 13 to FIG. 18] The rotary chassis 51 has a disc-shaped main portion 77 having a diameter slightly smaller than that of the large-sized disc 3 and a main portion 77 of the outer peripheral edge of the main portion 77. A leg 78 and a leg 79 protruding downward in parallel from two positions on opposite sides of the center are integrally formed by a metal plate, and the main portion 77 has a circular hole at the center thereof. 77a also has a main portion 7 in the portion near the outer peripheral edge.
Three guided long holes 77b, 77b, 77b (see FIG. 10) extending in an arc shape centered on the center of 7 are formed.
The guided long holes 77b, 77b, 77b each have a central angle of approximately 90 °.
Has a length of.

Reference numerals 80, 80, 80 are guide pins having a flange portion formed on the lower end thereof. These guide pins 80, 80, 80 are inserted through the three guided long holes 77b, 77b, 77b, respectively, and the upper end portion thereof is It is fixed to the lower surface of the main portion 73 of the elevator 50, whereby the rotary chassis 51 is positioned so as to face the lower surface of the elevator 50 with a small gap.
It is supported so that it can rotate freely in the range of about 90 ° at the center angle.

Reference numeral 81 is a gear plate in the form of an elongated plate having an arc shape, having a center angle of about 90 °, a tooth portion 81a is formed on the outer edge thereof, and the tooth portion is formed on the lower surface of the rotating chassis 51. 81a is attached in a state of being slightly projected from the outer peripheral edge of the rotating chassis 51.

Incidentally, such a gear plate 81 is provided so as to be at a position opposite to the disc insertion port 54 with the center of the rotary chassis 51 interposed therebetween.

Reference numerals 82a and 82b denote position detection projections formed on the main portion 77 of the rotary chassis 51 so as to project from the outer peripheral edge thereof, and are provided at positions separated from each other at a center angle of about 90 °.

Reference numeral 83 denotes an orientation detection switch (see FIGS. 2, 14, and 15) for detecting the orientation of the rotating chassis 51, which has a pair of leaf-shaped contacts 84a and 84a and 85a and 85a, respectively. , The second leaf switch 84, 85, and the contact 84
The contact portions of a and 84a, 85a and 85a are attached to the lower surface of the main portion 73 of the elevator 50 so as to intersect the rotation loci of the position detection protrusions 82a and 82b of the rotating chassis 51.

Then, when the rotary chassis 51 comes to the position facing the stocker, as shown in FIGS. 2 and 14, one of the position detection projections 82a of the one of the contactors 8 of the first leaf switch 84.
When the rotating chassis 51 comes into contact with the entrance / exit, the first contact 4a is brought into contact with the other contact 84a.
As shown in FIG. 15, the other position detection protrusion 82b is the second
Of the leaf switch 85 is brought into contact with one of the contacts 85a and brought into contact with the other contact 85a, whereby a predetermined signal is output from the first leaf switch 84 or the second leaf switch 85.

Therefore, by detecting this signal, it is detected which direction the rotating chassis 51 is currently facing.

(F-3. Insertion guide plate) [FIG. 1, FIG. 9, FIG. 13 to FIG.
15, FIG. 18] The insertion guide plates 52 and 53 described above are each made of synthetic resin.

The upper insertion guide plate 52 has a substantially semicircular plate shape having substantially the same size as a half of the main portion 77 of the rotary chassis 51, and a substantially U-shaped notch at the center of the side edge extending in a straight line. A portion 52a is formed, and short spacer protrusions 52b, 52b, ...
・ ・ Is projected.

Then, such an upper insertion guide plate shape 52 is arranged so as to face an area on the opposite side to the area where the gear plate 81 is provided, with the center of the lower surface of the main portion 77 of the rotary chassis 51 being sandwiched therebetween. It is fixed to the rotating chassis 51. The insertion guide plate 52
Between the main part 77 of the rotary chassis 51 and the spacer protrusion 52.
Spaces corresponding to the heights b, 52b, ... Are provided.

The lower insertion guide plate 53 has substantially the same size as the upper insertion guide plate 52, and a relatively large notch 53a having a substantially isosceles trapezoidal shape is formed at the side edge extending in a straight line, and The intermediate portion 53b is bent in a crank shape, and one of the two portions 53c and 53d on both sides sandwiching the intermediate portion 53b, one portion 53c having an arc-shaped outer peripheral edge is higher than the other portion 53d. It is formed as in.

Further, in such a lower insertion guide plate 53, both ends in the longitudinal direction of the other portion 53d are formed on the rotary chassis 51 by two.
The two leg pieces 78 and 79 are fixed to the lower surfaces of the horizontal lower piece portions 78a and 79a.

Then, one portion 53c of the lower insertion guide plate 53 and a part of the upper insertion guide plate 52 are opposed to each other with a gap of approximately several times the plate thickness of the optical discs 3 and 4, and are opposed to each other. The disc insertion port 54 is formed between the portions.

(F-4. Pull-in roller) [Figs. 1, 2, 9 and 13]
FIG. 15 to FIG. 15, FIG. 18 to FIG. 20] 86 and 87 are roller supporting arms, and substantially central portions thereof are horizontally projected from the outer surfaces of the two leg pieces 78 and 79 of the rotating chassis 51. Both ends of the shaft 55a of the pull-in roller 55 are rotatably supported by one of the rotation ends of the support pins 88 and 89, that is, the rotation end nearer the disc insertion opening 54. It is supported, and pressed protrusions 86a, 87a are formed at the other rotating end portion so as to protrude outward from each other.

The pull-in roller 55 has a length substantially the same as the diameter of the rotary chassis 51, and a rubber roller body 55b is press-fitted to the portion excluding both ends of the shaft 55a. Has an almost drum shape.

Then, a tension spring 89, between the other rotating end portion of the roller support arms 86, 87 and the lower piece portions 78a, 79a of the leg pieces 78, 79,
89 are stretched. Therefore, the roller support arms 86, 87
At any one time, a turning force is constantly urged in a direction in which one of the turning ends moves upward, whereby the pull-in roller 55 is elastically contacted with the lower surface of the upper insertion guide plate 52.

In addition, the pull-in roller 55 is arranged at a position closer to the center side of the slightly rotating chassis 51 from the disc insertion port 54.

90 is one of the leg pieces 7 on the upper surface of the main portion 77 of the rotating chassis 51.
8, i.e., the input gear rotatably supported at the position near the leg 78 on the front side with the rotating chassis 51 in the position facing the stocker, and 91 is always meshed with the input gear 90. Is the first transmission gear and has a bevel gear on its lower surface.
91a is integrally formed.

Reference numeral 92 is a second transmission gear rotatably supported by the support pin 88 supporting one roller support arm 86,
A bevel gear 92a is integrally formed on one side surface thereof, and the bevel gear 92a meshes with the bevel gear 91a of the first transmission gear 91.

Reference numeral 93 denotes a speed increasing gear rotatably supported at an intermediate position between one of the rotating ends of the roller support arm 86 and the support pin 88, and two gear parts 93a and 93b of large and small sizes coaxial with each other are provided. It is integrally formed, and its large gear portion 93a has a second transmission gear 92.
Further, the small gear portion 93b is meshed with the gear 94 fixed to one end of the rotary shaft 55a of the pull-in roller 55.

Therefore, when the input gear 90 is rotated, the rotation is transmitted to the first transmission gear 91, the second transmission gear 92, the speed increasing gear 93, and the gear 94 to rotate the rotating shaft 55a, which causes the pull-in roller. 55 is rotated.

(F-5. Driving mechanism) [Fig. 1, Fig. 2, Fig. 10, Fig. 16
FIG. 95 is a drive mechanism for selectively rotating the input gear 90 or the rotary chassis 51, and is provided in the elevator 50.

(F-5-a. Structure) [FIG. 1, FIG. 2, FIG. 10, FIG.
FIG. 96 is a motor fixed to the motor mounting piece 73a of the elevator 50, 97 is a worm fixed to the rotating shaft of the motor 96, and 98 is a worm wheel 98a and an output gear 98b which are coaxial with each other. The formed drive gear is rotatably supported by a support shaft 99 protruding downward from the main portion 73 of the elevator 50, and its worm wheel portion 98a is meshed with the worm 97 from the right side.

Reference numeral 100 denotes a disc-shaped gear support plate fixed to the sun gear support portion 76 of the elevator 50, and the sun gear 10 having a substantially ring shape on the gear support plate 100 and teeth formed on the outer peripheral portion thereof.
1 is rotatably fitted on the outside.

Reference numeral 102 denotes a drive pulley rotatably supported by the main portion 73, 103 denotes a driven pulley rotatably supported by a portion of the sun gear support portion 76 protruding from the remaining portion thereof. Gear parts 102a and 103a are integrally formed on the driven pulley 103. An endless transmission belt 104 is spanned between the drive pulley 102 and the driven pulley 103, and the gear portion 103a of the driven pulley 103 is constantly meshed with the sun gear 101.

Reference numeral 105 denotes a flick lever, which includes a main lever 106 and a limiter lever 107 positioned so as to overlap the main lever 106 from above. The main lever 106 is integrally formed with a main portion 106a having a substantially L shape when viewed from above and below and a supported portion 106b which includes a part of the main portion 106a and has a substantially U shape when viewed from the side. The supported portion 106b is the main portion 73 of the elevator 50.
Is supported by a lever support pin 108 projecting downward from the main body 106a so as to be rotatable in the horizontal direction, and the longer arm of the main portion 106a extending from the support pin 108 to the left obliquely forward. Frico gear 109 with a spur gear at the rotating end of
Is rotatably supported, and the flico gear 109 is located between the gear portion 102a of the drive pulley 102 and the tooth portion 81a of the gear plate 81 provided on the rotary chassis 51, and is always connected to the output gear portion 98b of the drive gear 98. It is meshed.

The left end of the limiter lever 107 is rotatably supported by the lever support pin 108, and the spring contact piece 107a protruding downward from the position near the turning end is a main portion 106a of the main lever 106. A small controlled pin 107b is vertically provided on the lower surface of the turning end of the short arm by inserting it into a hole 106c formed in the turning end with a margin.

110 is a torsion spring, the tip of one arm 110a of which is elastically contacted with the supported portion 106b of the main lever 106 from substantially the front, and the tip of the other arm 110b of which is substantially the spring contact piece 107a of the limiter lever 107. The spring contact piece 107a is elastically contacted from the rear side, so that the spring contact piece 107a is in contact with the front side of the hole 106c of the main lever 106.

Reference numeral 111 is a tension spring stretched between the main lever 106 and the elevator 50, and has a tension force smaller than the elastic force of the torsion spring 110.
Turning force is applied to 5 in a clockwise direction when viewed from above. In this state, the frico gear 109 meshes with the gear portion 102a of the drive pulley 102.

Reference numeral 112 denotes a switching slider for switching the position of the fricco lever 105, which is movably supported in the left-right direction on the left side of the rear end of the lower surface of the main portion 73 of the elevator 50, and has a substantially elongated trapezoidal control elongated hole 113. The pressed pin 114 is provided so as to project rearward from the projecting piece 112a that protrudes downward and the tip end of the pressed pin 114 is a notch 75a formed in the side piece 75 on the rear side of the elevator 50. It is located in a shallow notch formed in the left end portion of the front surface of the rear side cam slider 58 while being projected rearward through the through side.

The tip end of the controlled pin 107b provided on the limiter lever 107 is slidably engaged with the control slot 113 formed in the switching slider 112, and the control slot 1b
13 does not apply a pressing force to the controlled pin 107b in either the clockwise direction or the counterclockwise direction when the left end portion 113a or the right end portion 113b is engaged with the controlled pin 107b. Is formed.

The elevator 50 is supported on the cam slider 58 by the left end portion of the control slot 113 of the switching slider 112 while the cam slider 58 is located between the first floor position and the eleventh floor position.
The controlled pin 107b is located at 113a. The position of the switching slider 112 in this state will be referred to as “first
Position.

(F-5-b. Switching of drive system) [Fig. 16] Therefore, when the cam slider 58 is located between the first-floor position and the eleventh-floor position, the main lever 106 causes the fric gear 1 to move.
The 09 is held at a position where it meshes with the gear portion 102a of the drive pulley 102 (hereinafter, referred to as "roller rotating position").

When the cam slider 58 moves from the second-floor position to the first-floor position, in other words, when the disc transport unit 49 moves to the uppermost-floor position, as shown in FIG.
The second pressed pin 114 is engaged with the engaging recess 58c formed in the cam slider 58 from below.

Therefore, when the cam slider 58 moves from this state to the B _1st floor position, the inner surface of the engaging recess 58c is pressed by the pressed pin 114.
Is pressed to move the switching slider 112 to the second position shown in FIG. 16 (B), that is, to the position shifted to the left by a predetermined distance from the first position. This allows the limiter lever
The controlled pin 107b of 107 is pushed substantially rearward so as to be located at the intermediate portion 113c of the control elongated hole 113, and therefore the flick lever 105 is rotated counterclockwise as viewed from above, and the main lever 106 is moved. The furico gear 109 is moved to a position (hereinafter, referred to as “chassis rotating position”) in which the tooth portion 81a of the gear plate 81 fixed to the rotary chassis 51 is engaged.

In this case, the controlled pin 107b is located in the middle portion 1 of the control slot 113.
The frico lever 105 reaches the chassis rotation position immediately before riding on 13c, and then the limiter lever 107 is further rotated in the counterclockwise direction.
Since the spring contact piece 107a of 7 is separated from the front edge of the hole 106c of the main lever 106, the elastic force of the torsion spring 110 acts as a force for pressing the main lever 106 to the chassis rotation position.

Then, when the cam slider 58 moves to the B _second floor position,
The switching slider 112 is further moved to the left, whereby the switching slider 112 is moved to the third position shown in FIG. 16 (C), that is, the controlled pin 107b is moved to the right end portion 113 of the control slot 113.
It is moved to the position to be located in b.

Therefore, in this state, since the pressing of the limiter lever 107, which has been performed up to that point, is released substantially backward,
The tension of the tension spring 111 causes the main lever 106 to return to the roller rotation position integrally with the limiter lever 107.

When the cam slider 58 returns to the B _first floor position from this state, the switching slider 112 is moved to the second position, the main lever 105 is moved to the chassis rotation position, and the cam slider 58 is moved to the first floor position. When it returns, the switching slider 112 is moved to the first position and the main lever 105 is moved to the roller rotation position, and when the cam slider 58 moves further to the right from this state, the disc transport portion 49 moves downward. Pin 1 of the switching slider 112 to be moved to
14 escapes downward from the engaging recess 58c of the cam slider 58,
Therefore, the switching slider 112 is held at the first position.

However, the fricco gear 109 is provided with the tooth portion 81a of the gear plate 81 of the rotating chassis 51 only when the cam slider 58 comes to the B _1st floor position.
The motor 96 rotates in the worm 97-
It is transmitted through a system path of the drive gear 98-the fricco gear 109-the tooth portion 81a of the gear plate 81. Further, when the cam slider 58 is located at a position other than the B _1st floor position, the frico gear 109 meshes with the gear portion 102a of the drive pulley 102, and in this state, the rotation of the motor 96 causes the worm 97-the drive gear 98-the frico gear 109 to rotate. -Drive pulley 102-Transmission belt 104-Drive pulley 103-Gear portion 103a of the driven pulley 103-Sun gear 101-The gear from the input gear 90 to the gear 94 fixed to the draw roller 55 Will be transmitted.

(F-5-c. Rotation of rotating chassis and retracting roller) [Figs. 2 and 16] As described above, the disk transport unit 49 includes the cam slider 58.
Is on the top floor position when B is on the _1st floor position,
Further, at this time, when the rotary chassis 51 is in the position facing the stocker, the fricco gear 109 is meshed with the clockwise end of the tooth portion 81a of the gear plate 81 of the rotary chassis 51 when viewed from above. Therefore, from this state, when the motor 96 rotates in the normal direction, that is, when the drive gear 98 is rotated in the clockwise direction when viewed from above, the flico gear 109 is rotated in the counterclockwise direction, and the gear plate 81 is rotated clockwise. It is rotated in the rotating direction, whereby the rotating chassis 51 is moved to a position facing the entrance / exit, and the disk insertion port 54 is moved to the entrance / exit of the disk.
Opposed to 42.

Also, if the motor 96 reverses from this state,
Since 109 is rotated in the clockwise direction, the gear plate 81 is rotated in the counterclockwise direction, whereby the rotary chassis 51 is moved to the stocker facing position.

In this way, the rotation chassis 51 is rotated.

On the other hand, when the motor 96 rotates in the reverse direction when the cam slider 58 is located at a position other than the B _1st floor position, the sun gear 101 is rotated clockwise, which causes the retracting roller 55 and the rotating chassis 51 to face the stocker. Counterclockwise when viewed from the front (hereinafter referred to as "retracting direction").
When the motor 96 rotates forward, the sun gear 101
Is rotated counterclockwise, which causes the retracting roller 55
Is rotated in the delivery direction opposite to the retracting direction.

(F-6. Delivery of optical disk to disk transport section)
[FIGS. 18 (A) and 18 (B)] Then, when the optical disc 3 or 4 is inserted into the disc insertion slot 54, the optical disc 3 or 4 is shown in FIG.
As shown by the dashed line, the insertion tip is inserted into the gap between the central portion of the pull-in roller 55, that is, the portion having a small diameter and the upper insertion guide plate 52, and these insertion guide plate 52 and the pull-in roller 55
Therefore, when the pull-in roller 55 rotates in the pull-in direction from this state, the optical disk 3 or 4 is pulled by the rotation of the pull-in roller 55.

This drawing is performed until the center of the optical disk 3 or 4 is substantially aligned with the center of the rotating chassis 51, as shown in FIG. 18 (B), and the disk transport unit 49 is moved to the chucking position. The insertion guide plate 52 and the pull-in roller 55 are moved until they move or the pull-in roller 55 rotates in the feeding direction.
Held by and.

Further, when the drawing roller 55 rotates in the sending direction from the state where the optical disk 3 or 4 is held by the rotary chassis 51 in this way, the optical disk is sent out from between the insertion guide plate 52 and the drawing roller 55. It will be.

(F-7. Chucking mechanism) [Figs. 1, 13 and 18
[Fig.] 115 is a chucking plate for chucking the optical disk 3 or 4 on the turntable 34, and has a disk shape having a diameter slightly smaller than the diameter of the small size disk 4, and has an axial direction at its center. Short cylindrical protrusion 11
5a is formed, a ring-shaped magnet 115b and a positioning protrusion 115c located at the center of the magnet 115b are fixed inside the protrusion 115a, and the flange plate 116 is rotatable on the upper surface of the protrusion 115a. Supported by.

Further, 117 is a plate holding plate, and two portions 117b located on both sides with a substantially trapezoidal intermediate portion 117a interposed therebetween,
One of the 117c, 117b, has a semicircular cutout 11 at the tip.
7d is formed, and a short L-shaped abutment piece 117e, which is substantially L-shaped when viewed from the side, is provided to project downward from the tip of the other portion 117c.

Reference numeral 118 is a support pin arranged on the lower surface of the rotating chassis 51 near the gear plate 81 so as to extend parallel to the pull-in roller 55, and in the plate holding plate 117, the center of the arc of the notch 117d is in the rotating chassis 51. It is positioned so as to overlap the lower surface of the rotating chassis 51 in a state where it substantially coincides with the center of
The other part 117c is rotatably supported by the support pin 118, and a spring 119 externally fitted to the support pin 118 urges a turning force in a direction in which one part 117b moves upward. Has been done.

Then, the notch 117 of the plate holding plate 117.
The push-up arms 117f, 117f located on both sides of d are located between the chucking plate 115 and its flange plate 116, and therefore the abutting pieces 117e of the plate holding plate 117 are not pressed from below. Between, chucking plate 115
Are pushed against the lower surface of the upper insertion guide plate 52 by the push-up arms 117f and 117f.

Since the chucking plate 115 is provided in this way, when the optical disk 3 or 4 is drawn into the disk transport unit 49, the chucking plate 115 is relatively moved as shown in FIG. 18 (B). The optical disk 3 or 4 is positioned so as to be superposed from above.

(F-8. Disk Positioning Mechanism) [FIG. 9, FIG. 13 to FIG. 15, FIG. 17] 120 is a disk positioning mechanism provided on the lower surface of the main portion 77 of the rotary chassis 51.

(F-8-a. Structure) [FIG. 9, FIG. 13 to FIG. 15, and FIG.
[Fig.] Reference numerals 121 and 122 denote slide levers, and pull-in rollers are provided at positions opposite to each other with the center of the main portion 77 of the rotating chassis 51 interposed therebetween.
55 is arranged so as to extend in a direction parallel to 55, is supported by the main portion 77 so as to be slidable within a certain range in the longitudinal direction thereof, and is extended by tension springs 123 and 124 in opposite directions. It is urged to move.

125, 125 are entrance side opening / closing arms, 126, 126 are back side opening / closing arms, and these opening / closing arms 125, 125, 126, 126 are main parts.
It is supported by 77 so as to be rotatable in the horizontal direction and has an opening / closing arm on the inlet side.
125 and 125 are arranged at positions corresponding to both ends of the disc insertion opening 54, respectively, and are connected to each other via the entrance-side slide lever 121 so as to rotate at the same time and in opposite directions. The side opening / closing arms 126, 126 are separately arranged at positions close to both ends of the gear plate 81, and are connected to each other via the inner side slide lever 122 so as to rotate at the same time and in opposite directions.

Then, the pressed pins 127, 127 are provided from the rotating end portions of the entrance-side opening / closing arms 125, 125 that are positioned so as to protrude from the rotary chassis 51, and the rotation ends of the rear-side opening / closing arms 126, 126 are also provided. Positioning pins 128, 128 project downward from the respective parts.

Reference numeral 129 denotes an interlocking arm, which is arranged at a position near the other leg piece 79 of the main portion 77, an intermediate portion of which is supported by the main portion 77 so as to be rotatable in the horizontal direction, and one end portion of which is at the rear side. It is rotatably connected to the slide lever 122, and the other end faces the one end edge of the inlet slide lever 121.

When the pressed pins 127, 127 are not pressed in the direction of expanding the distance between them, the slide lever 12
1, 122 are held at one end position in the moving range by the tensile force of the coil springs 123, 124, and this state (first
14), the inlet side opening / closing arms 125, 125
Is held in a standby position at an initial position where the two pressed pins 127, 127 are separated from each other by a distance smaller than the diameter of the small size disk 4 in the direction parallel to the pull-in roller 55. The positioning pins 128, 128 are held in standby positions at initial positions separated from each other by a distance smaller than the diameter of the small size disk 4 in the direction parallel to the drawing roller 55.

Most of the above-mentioned members are arranged between the upper insertion guide plate 52, the plate holding plate 117, etc. and the main portion 77 of the rotary chassis 51.
The lower part of 8, 128 is located at the same height as the disc insertion slot 54.

(F-8-b. Action) [Fig. 17] Then, when the large size disc 3 is inserted into the disc insertion slot 54, its outer peripheral edge is covered by the solid line as shown by the solid line in Fig. 17 (A). The pressing pins 127, 127 are pressed in the opening direction, that is, the direction in which the distance between them is increased. As a result, the inlet-side opening / closing arms 125, 125 are rotated relative to each other in the direction in which the pressed pins 127, 127 are opened, and the inlet-side slide lever 121 moves the leg pieces 79.
Is moved to rotate the interlocking arm 129,
The rear slide lever 122 is moved to the leg piece 78 side to open the opening / closing arms 126, 126, that is, the positioning pins 128, 128.
Are rotated so as to move in the opening direction, that is, the direction in which the distance between them is increased, and these movements are performed by the optical disc 3
As shown by the two-dot chain line in the figure, the center of
The maximum amount is reached when it comes to the straight line connecting 7 and 127.
Then, when the optical disc 3 is further inserted, the entrance side opening / closing arms 125, 125 are rotated in the direction of closing the pressed pins 127 and 127, that is, in the direction of reducing the distance between them. Once the pins 128, 128 are closed, they are pressed again in the opening direction by the large size disc 3,
When inserting the large size disc 3, the outer peripheral edge of the large size disc 3 is abutting piece 117e of the plate holding plate 117, as shown by the alternate long and short dash line in FIG.
Is made up to the point of contact with. In this state, the center of the large-sized disc 3 is the chucking plate 11
Since they are substantially aligned with the center of 5 and are not in contact with the pressed pins 127, 127, these pressed pins 127, 127 have been returned to their initial positions, and the positioning pins 128, 128 have a large size. It is elastically contacted with the outer peripheral edge of the disk 3.

On the other hand, when the small size disc 4 is inserted, first, as shown by the solid line in FIG. 17 (B), the small size disc 4 comes into contact with the pressed pins 127, 127 to open them. Press to. However, in this case, since the small-sized disc 4 has a small diameter, the pressed pin is inserted before the small-sized disc 4 is inserted half further than the pull-in roller 55.
Separated from 127,127, the locating pins 128,128 are therefore returned to their initial position after being slightly opened and before the small size disc 4 is contacted.

Then, the insertion of the small size disc 4 is performed by the positioning pin 12 which is at the initial position as shown by the chain line in the figure.
It is blocked when it comes into contact with 8, 128, and in this state, the center of the small size disk 4 is the chucking plate.
It is almost coincident with the center of 115.

(F-9. Insertion detecting means) [FIG. 9, FIG. 14, FIG. 15, FIG.
[Fig. 17] 130 is a micro switch-shaped trigger switch attached to the bottom surface of the rotating chassis 51.
130a is arranged so as to face the side edge of one of the inlet side opening / closing arms 125, 125, and the pin plunger 130a is pressed with the opening / closing arm 125 in the initial position, and the pressing is released. Signal output when
It is called "insertion detection signal". ) Is used as a trigger to reverse the motor 96.

Therefore, when the optical disk 3 or 4 is inserted into the disk insertion port 54, the opening / closing arms 125, 125 move at least once in the opening direction as described above, so that the pressing force on the pin plunger 130a is once released. As a result, the pull-in roller 55 is rotated in the pull-in direction to pull in the optical disc.

131 and 132 are pull-in detection sensors, respectively, a light emitting element 131a attached to the upper surface of the main portion 77 of the rotating chassis 51,
132a and light receiving elements 131b and 132b attached to the other portion 53d of the lower insertion guide plate 53, these light emitting elements 131a and 13b.
2a and the light receiving elements 131b and 132b are composed of a main part 77 and an upper insertion guide plate 52.
Are vertically opposed to each other with a light-transmitting hole formed in
One of the pull-in detection sensors 131 is arranged at a position corresponding to a position slightly inward from the outer peripheral edge of the small size disc 4 in which the insertion between the insertion guide plate 52 and the pull-in roller 55 is completed, and the other pull-in detection sensor 131 is arranged. The detection sensor 132 is arranged at a position corresponding to a position slightly outward from the outer peripheral edge of the small size disk 4 in the above state.

In the following description, the signal output when the light from the light emitting elements 131a and 132a is irradiated to the light receiving elements 131b and 132b is referred to as a first signal, and the signal output when the irradiation is interrupted is This is called the second signal.

Therefore, when the small-sized disk 4 reaches the pull-in completion position, only one pull-in detection sensor 131 has its light emitting element 131a.
Since the irradiation of the light emitted from the light receiving element 131b is cut off, the second signal is output, and the other pull-in detection sensor 132 still outputs the first signal. When the small size disk 4 has reached the pull-in completion position, the detection of these signals is used as a trigger to stop the rotation of the pull-in roller 55 in the pull-in direction.

On the other hand, when the large-sized disc 3 is pulled in, the second signals are sequentially output from both of the pull-in detection sensors 131 and 132. By detecting these signals, the pulled-in optical disc has a large size. The disc 3 is detected. In this case, since the two signals are output immediately before the pulling-in of the large size disc 3 is completed, a predetermined time, for example, from the time when the second signal is output from only one pull-in detection sensor 131, The rotation of the pull-in roller 55 in the pull-in direction is stopped by assuming that the pull-in is completed after about 0.6 seconds.

(F-10. Push-out arm push lever, disc presence / absence sensor) [Figs. 2, 10, 19 and 20] (f-10-a. Push-out arm push lever) 133 is from the disc stocker 2 to the optical disc. When taking out the extrusion arms 20, 20, ... Or 21, 21, ...
・ Extrusion arm pressing lever for moving to the extrusion completion position.

The push-out arm pressing lever 133 has a plate shape elongated in the left-right direction, and a pressed piece 133a is provided in a substantially middle portion thereof, and a pressing piece 133b is provided in a cut-and-protruded manner rearward from a position near the right end. ing.

The push-out arm pressing lever 133 is slidably supported within a certain range in the left-right direction on the rear surface of the front side piece 74 of the elevator 50 that protrudes rightward from the main portion 73. , The tension force of the tension spring 134 stretched between the elevator 50 and the tension force of the tension spring 134 is always urged to move to the left, and the pressed piece 133a is pushed while not being pressed to the right. Is held at a position close to the pressing pin provided on the returning arm of the disk loading / unloading mechanism, which will be described later, from the right side.

(F-10-b. Disc presence / absence sensor) 135 is a disc storage chamber 10 of the disc stocker 2,
... and 19, 19, ... are disk presence / absence sensors for detecting whether or not optical disks are housed, and are attached to the sensor mounting piece 73b formed in the main portion 73 of the elevator 50. The light emitting element 135a and the light receiving element 135b are arranged to face each other in the front-rear direction.

It should be noted that such a light emitting element 135 of the disk presence sensor 135
a and the light receiving element 135b are the left end portions 29a, 2 of the stock detection levers 29, 29, ...
9a, which are located so as to face each other with the light being emitted from the light emitting element 135a being applied to the light receiving element 135b, a signal indicating "no disk" is output.
In the state where the irradiation is cut off, a signal indicating “with disk” is output.

Therefore, as described above, the stock detection levers 29, 29,
... is the disc storage room 10, 1 of the disc stocker 2.
When the optical disk is stored in 0, ... or 19, 19, ..., it is in the storage position, and when the optical disk is not stored, it is moved to the non-storage position. When the transport unit 49 comes to the floor corresponding to a certain disc storage chamber and the stock detection lever 29 corresponding to the disc storage chamber is at the storage position,
As shown, the light emitting element 1 of the disk presence sensor 135
The stock detecting lever 29 is provided between the light receiving element 135b and the light receiving element 135b.
Since the left end portion 29a is relatively positioned to cut off the light irradiation to the light receiving element 135b, in this case, the signal “with disk” is output, and the stock detection lever 29 is in the non-retracted position. In this case, as shown in FIG. 20, the left end 29 of the disk presence sensor 135 escapes to the right, so in this case the light irradiation to the light receiving element 135b is not interrupted, so "no disk" Signal is output.

In this way, it is detected whether or not the optical disc is stored in the disc storage chamber.

(G. Disc loading / unloading mechanism) [Fig. 2, Fig. 3, Fig. 12, Fig.
19 and FIG. 20] 136 pushes the pushing arm pushing lever 133 to push the pushing optical disc stored in the disc stocker 2 to the pushing arm.
The function of pushing out from the disk storage chambers 10, 10, ... or 19, 19, ... by 20, 20, ... or 21, 21, ... and the disk stocker 2 from the disk transport unit 49
A disk loading / unloading mechanism that completely returns the optical disk sent toward the disk storage chamber to the disk storage chamber, and most of the disk loading / unloading mechanism is provided on the lower right half of the lower surface of the main chassis 17.

(G-1. Sending arm and returning arm) [Fig. 2 and 3
FIG. 12, FIG. 19, FIG. 20, FIG. 20] 137 is an elongate plate-shaped delivery arm, and a substantially middle position thereof is rotatable on a support shaft 138 projecting downward from the main chassis 17. And a cam elongated hole 137a extending in the longitudinal direction is formed in a rear portion from the support shaft 138, and
A tall pressing pin 139 is erected from the front rotating end portion, and most of the pressing pin 139 protrudes upward through a recess 17a formed in the front side surface of the main chassis 17 and extending in the left-right direction. The upper end of the disc stocker 2 extends to a position higher than the disc storage room 10 on the first floor.

Reference numeral 140 denotes a first arm rotating gear that is rotatably supported at a position in the main chassis 17 that is located slightly rearward from the support shaft 138, and a cam pin 141 that projects downward from a portion near the outer periphery thereof. The cam pin 141 is slidably engaged with the cam elongated hole 137a of the delivery arm 137. Therefore, while the arm rotation gear 140 makes one rotation, the delivery arm 137 has a predetermined stroke. It is rotated so as to reciprocate once, and thereby the pressing pin 139 reciprocates substantially left and right at a position close to the front side surface of the disk stocker 2.

Reference numeral 142 denotes a return arm, which also has an elongated plate shape and is formed with a cam elongated hole 142a extending in the longitudinal direction thereof, and one end thereof is provided so as to project from a position near the rear portion of the lower surface of the main chassis 17. The push shaft 144 is rotatably supported by the support shaft 143, and a tall push-in pin 144 is erected from the rotary end portion. Most of the push-in pin 144 is the left side surface of the disk stocker 2 in the main chassis 17, That is, it projects upward through an arcuate cut groove 17b formed at a position corresponding to the substantially latter half of the surface where the openings of the disc storage chamber are lined up, and the upper end thereof is the first floor disc storage chamber of the disc stocker 2. It is located at about the same height as 10.

145 is a second arm rotating gear, and is a main chassis 17
Of which, the support shaft 143 is rotatably supported at a position closer to the left of the support shaft, a cam plate 146 is fixed to the lower surface thereof, and a cam pin 147 is provided so as to project downward from the tip of the cam plate 146. The cam pin 147 is the cam long hole 14 of the returning arm 142.
It is slidably engaged with 2a. Therefore, while the second arm rotation gear 145 makes one rotation, the return arm 142 is rotated so as to make one reciprocation with a predetermined stroke, whereby
The push pin 144 is reciprocated approximately in the front-rear direction at a position close to the left side surface of the disc stocker 2.

The cam plate 146 is provided with an arm 146a protruding laterally.

(G-2. Oscillating gear, detection switch, etc.) [Fig. 12] 148 is a motor attached to the gear chassis 64, and a worm 149 is fixed to the rotary shaft of the motor 148.
49 is meshed with a worm wheel 150 rotatably supported by the gear chassis 64.

Reference numeral 151 is a reduction gear that is constantly meshed with the second arm rotation gear 145 from substantially the front side.

Reference numeral 152 is a swing lever, one end of which is the gear chassis 6
It is supported by 4 so that it can rotate in the horizontal direction,
A gear support shaft 153 is provided so as to project upward from the rotating end portion, and a swing gear 154 is rotatably supported by the gear support shaft 153. The swing gear 154 is integrally formed with two large and small gear portions 154a and 154b that are coaxial with each other, and the small gear portion 154b is constantly meshed with a gear (not shown) integrally formed with the worm wheel 150. , Large gear section 15
4a is located between the reduction gear 151 and the first arm rotation gear 140.

The swing gear 154 is elastically contacted with the swing lever 152 via a friction means (not shown). Therefore, when the worm wheel 150 is rotated, the swing lever 152 is rotated.
A rotating force in the same direction as the rotation direction of the worm wheel 150 is urged to press the large gear portion 154a to a position where it engages with the reduction gear 151 or a position where it engages with the first arm rotation gear 140.

155 is a first arm position detection switch for detecting the initial position of the sending arm 137, and 156 is a second arm position detection switch for detecting the initial position of the returning arm 142. Position detection switch 15
5 and 156 are provided with pressed pieces 155a and 156a that switch the connection state of the contacts when pressed, and the first arm position detection switch 155 has a rotation end portion on the rear side of the sending arm 137 that turns. It is arranged so that the pressed piece 155a is pressed by the rotating end portion when it reaches the right end of the moving range.
The arm position detection switch 156 of the second arm rotation gear 1
It is arranged at a position slightly diagonally rearward from 45, and its pressed piece 156a is provided so as to be on the rotation locus of the tip end portion of the arm 146a of the cam plate 146.

(G-3. Operation) [Fig. 12] Then, when the motor 148 rotates in the direction for rotating the worm wheel 150 in the counterclockwise direction when viewed from above (hereinafter, referred to as "forward rotation"), it swings. Since the large gear portion 154a of the gear 154 meshes with the first arm rotation gear 140 and rotates it in the counterclockwise direction, the delivery arm 137 is rotated,
The delivery arm 137 has a cutout portion 1 whose pressing pin 139 is formed in the main chassis 17, as shown by the solid line in FIG.
When it comes to a position located at the left end of 7a (hereinafter referred to as "initial position"), the rotating end on the rear side presses the pressed piece 155a of the first arm position detection switch 155, and in this state. The rotation of the motor 148 is stopped in accordance with the signal output from the arm position detection switch 155.

Therefore, while the motor 148 is not rotating in the normal direction, the feeding arm 137 is held at the initial position, and in this state, the pressing pin 139 of the pushing arm 139 of the pushing arm pressing lever 133 provided on the elevator 50 is pressed. It is located close to or slightly touching 133a from the left.

Then, when the motor 148 rotates in the normal direction, the first arm rotating gear 140 makes one rotation, whereby the sending arm 137 moves substantially rightward and then returns to the initial position again. 139 moves the pushing arm pressing lever 133 to the right.

Further, when the motor 148 rotates in the reverse direction, the large gear portion 154a of the swing gear 154 meshes with the reduction gear 151 and rotates it clockwise as viewed from above, so that the second arm rotation gear 145 moves. The return arm 142 is rotated in the counterclockwise direction so that the return arm 142 has its pressing pin 144 of the cut groove 17b formed in the main chassis 17 as shown by the solid line in FIG. When it reaches the position located at the rear end (hereinafter referred to as “initial position”), the arm 146a of the cam plate 146 presses the pressed piece 156a of the second arm position detection switch 156,
In this state, the rotation of the motor 148 is stopped according to the signal output from the arm position detection switch 156.

Therefore, while the motor 148 does not rotate in the reverse direction, the return arm 142
Is held in its initial position and, in this state, its push pin
144 is located at a position slightly rearward from the left side surface of the disk stocker 2.

Then, when the motor 148 is rotated in the reverse direction, the second arm rotation gear 145 is rotated once, so that the push-in pin 144 is once moved from the substantially central portion of the left side surface of the disc stocker 2 to the position where the push-in pin 144 has entered the pit. After moving, it is returned to its original position.

(H. Operation) [FIG. 1, FIG. 3, FIG. 7, FIG. 9, FIG.
Figure, Figure 16 (B), Figure 16 (C), Figure 18 (B), Figure 18
(C), FIG. 19, FIG. 20] Then, the optical disk player 1 configured as described above.
The operation of storing and taking out the optical disk 3 or 4 from the disk stocker 2 and taking it in and out of the outer casing, and further the reproduction by the reproducing unit 33 is performed as follows, for example.

(H-1. Storing the optical disc in the disc stocker)
[FIG. 1, FIG. 7, FIG. 15, FIG. 16 (B), FIG. 16 (C), FIG. 20] As described above, the disk stocker 2 has a large size disk 3 and a small size disk 4. Can store up to 5 sheets each. This storage is a disc door 42
The optical disc 3 or 4 inserted in the outer casing 40 is held by the disc transport unit 49 and moved to a position facing an empty disc storage chamber corresponding to the size of the optical disc, and the optical disc is transferred to the disc storage chamber. It is done by sending out.

That is, when an instruction to perform storing of the disc from the outside outer casing 40 to the disk stocker 2 is made, firstly, is moving cam slider 57 and 58 to the B ₁ floor position (see FIG. 1). In this state, the disc transport unit 49 is at the uppermost position, the rotary chassis 51 is at the stocker facing position, and the switching slider 112 is at the second position (16th position).
(See FIG. (B)), so that the fricco gear 109 rotates the chassis 51
Is meshed with the tooth portion 81a. From this state, the motor 96 rotates in the forward direction to move the rotating chassis 51 to the position facing the entrance and exit (see FIG. 15). As a result, the disc insertion port 54 of the disc transport portion 49 faces the disc entrance / exit 42. Next, the cam sliders 57 and 58 are moved to the B _2nd floor position (see FIG. 7), and at this time, the pressing end surface 57c of the front cam slider 57 presses the pressed portion 44c of the open / close slider 44 to the left. Move it to the leftmost position. As a result, the shutter 43 is moved to the open position and the disc entrance / exit 42 is opened. In this state, since the switching slider 112 is in the third position, the flico gear 109
Is meshed with the gear portion 102a of the drive pulley 102 (16th
(See FIG. (C)).

Then, the desired optical disk 3 or 4 is loaded into the disk entrance / exit 42
When the optical disc is inserted into the outer casing 40 (see FIG. 15), the optical disc is inserted into the disc insertion port 54 of the disc transporting unit 49. At this time, first, the entrance side opening / closing arms 125, 1
25 is moved to the open position, and the insertion detection signal is output from the trigger switch 130, whereby the motor 96 rotates in the reverse direction to rotate the drawing roller 55 in the drawing direction. This allows
The optical disk is held by the disk transport unit 49, and the type of whether the optical disk is the large size disk 3 or the small size disk 4 is detected by the pull-in detection sensors 131 and 132.

Then, when the pulling in of the optical disk 3 or 4 is completed, the cam sliders 57 and 58 move to the B _1st floor position to return the switching slider 112 to the second position, and accordingly, the flico gear 109 causes the tooth portion 81a of the rotating chassis 51. Mesh with the motor 96
Is reversed to move the rotating chassis 51 to the position facing the stocker.

At this time, the pressing end surface 57c of the cam slider 57 is
Is released to the right, the open / close slider 44 is returned to the right end position by the tensile force of the tension spring 46, and
The shutter 43 is moved to the closed position and the disk entrance / exit
42 is closed.

From this state, the disc transport unit 49 is moved to the floor facing the empty disc storage chamber corresponding to the size of the optical disc held therein. This movement is done by the cam slider 57,
Step 58 is performed by moving the disk transport unit 49 from the first floor position to the tenth floor position to a position corresponding to the floor to be moved.

As a result, since the switching slider 112 is moved to the first position, the flico gear 109 meshes with the gear portion 102a of the drive pulley 102, whereby the pull-in roller 55 can be rotated.

Further, the detection of which disk storage chamber is currently empty is performed by, for example, turning on the power, prior to other operations. This detection is performed by moving the disc transport unit 49 from the first floor to the tenth floor, and the disc presence sensor 135
Is performed by detecting the position of the stock detection levers 29, 29, ... And the detection result is stored in the storage means.

Then, the disc transport unit 49 is moved to the floor facing the empty disc storage chamber.

Then, when the disc transport portion 49 comes to a predetermined floor, the disc insertion port 54 is opposed to the disc storage chamber, and the motor 96 is rotated in the forward direction to rotate the pull-in roller 55 in the delivery direction. The optical disk 3 or 4 is sent out and inserted into the disk storage chamber about two-thirds in the case of the large size disk 3 and about half in the case of the small size disk 4 (see FIGS. 20 (A) and (B)). ) Is indicated by a two-dot chain line).

At this time, since the optical disc being sent pushes the pressed pins 127, 127 of the entrance side opening / closing arms 125, 125 once, the opening / closing arms 125, 125 are once moved to the opening direction and then moved to the initial position. Return, which causes the trigger switch 130 to sequentially output two different signals.

When the above signal is output, the rotation of the motor 96 is stopped and the rotation of the pull-in roller 55 is stopped, and then the motor 148 is rotated in the reverse direction, whereby the return arm 142 reciprocates once.

Therefore, as shown in FIG. 20, the push-in pin 144 of the return arm 142 is partially inserted into the disc storage chamber and comes into contact with the outer peripheral edge of the optical disc from a substantially diagonally left rear side to press it. Is further pushed into the disc storage chamber, and when the push-in pin 144 comes to the right end of the moving stroke, as shown by the one-dot chain line in FIGS. 20 (A) and 20 (B), the disc is stored in the disc storage chamber. Is completed.

At this time, the push-out arm 20 or 21 corresponding to the disc storage chamber is moved to the storage completion position, and due to this movement, the stock detection lever 29 corresponding to the disc storage chamber is moved to the storage position. To be done.

In this way, the optical disc is stored in the disc storage chamber.

(H-2. Ejecting the optical disc from the disc stocker)
[FIG. 18 (B), FIG. 19] When the optical disc stored in the disc stocker 2 is taken out to the disc carrying section 49 as described above, the cam slider 58 is moved to designate the disc carrying section 49. The optical disc 3 or 4 (hereinafter, referred to as “designated disc”) is moved to a floor corresponding to the disc storage chamber in which the optical disc 3 or 4 is stored.

Then, when the disc carrier 49 comes to a predetermined floor, the motor
148 rotates normally and the sending arm 137 reciprocates once. As a result, the pressing pin 139 of the sending arm 137 moves the pushing arm pressing lever 133 to the right, as shown in FIG. Thereby, the pushing piece 133 of the pushing arm pushing lever 133 is
Since b contacts the pressed pin 23 or 26 of the pushing arm 20 or 21 corresponding to the disc storage chamber and pushes it to the right, the pushing arm 20 or 21 is moved to the pushing completion position, Causes the designated disc to be pushed out of the disc storage chamber and inserted into the disc insertion opening 54 of the disc transport portion 49 (indicated by a chain double-dashed line in FIG. 19), and then the pull-in roller 55 is rotated in the pull-in direction. Pull the optical disk to the pull-in completion position (see FIG. 18 (B)).

At this time, the stock detection lever 29 corresponding to the disk storage chamber is moved to the non-storage position by the elastic force of the coil spring 32.

Then, the designated optical disc is taken out to the disc carrying section 49.

(H-3. Chucking and reproduction) [Fig. 3, Fig. 9, Fig.
18 (C)] The chucking and reproduction of the optical disc 3 or 4 on the turntable 34 are performed as follows.

The chucking is performed by moving the cam sliders 57 and 58 to the 11th floor position and moving the disk carrying unit 49 to the chucking position.

When the designated disc is reproduced, the disc transport unit 49 is moved to the chucking position after the completion of the operation of ejecting the designated disc to the disc transport unit 49, and the outer casing
40 When immediately reproducing the optical disk 3 or 4 (hereinafter, referred to as “external disk”) inserted from the outside, pulling the optical disk 3 or 4 into the disk transport section 49-to the position of the rotating chassis 51 facing the stocker. Following the completion of the series of movements, the disc transport unit 49 is moved to the chucking position.

Immediately before the disc transport unit 49 reaches the chucking position, the pressed protrusions 86a, 8 of the roller support arms 86, 87 are
7a is brought into contact with the upper surfaces of projections 157, 157 (see FIGS. 3 and 9) provided on both front and rear sides of the upper surface 18 of the main chassis 17, whereby the pressed projections 86a, 87a. Is relatively pressed upward, so that the roller support arms 86, 87
However, as shown in FIG. 18 (C), it is rotated clockwise when viewed from the front. Further, in the same drawing as this, the positioning release lever 15 provided on the other leg piece 79 of the rotating chassis 51 is shown.
8 (see FIG. 9) is rotated by being relatively pressed by a protrusion 159 (see FIGS. 3 and 9) provided on the rear side of the upper surface 18 of the main chassis 17. As a result, the positioning release lever 158 rotates the interlocking arm 129 counterclockwise as viewed from above. As a result, the rear side opening / closing arms 126, 126 are further moved to the open position, and the positioning pins 128, 128 are laterally separated from the outer peripheral edge of the optical disk.

Therefore, when the disc transport unit 49 reaches the chucking position, the pull-in roller 55, which has been in elastic contact with the optical disc from below, and the positioning pins 128, 128, which are in elastic contact with the outer peripheral edge of the optical disc, are separated from the optical disc. As a result, the optical disk is placed on the turntable 34 (see FIG. 18 (C)).

Further, substantially at the same time when the disc transport portion 49 reaches the chucking position, the lower end portion of the abutting piece 117e of the plate holding plate 117 is projected at the center of the left end portion of the upper surface 18 of the main chassis 17 (projection 160 ( (See FIG. 3, FIG. 9, etc.) and is pressed relatively upward, whereby the plate holding plate 117 is rotated in the clockwise direction when viewed from the front side (see FIG. 18).
(See FIG. (C)).

As a result, the chucking plate 115 is magnetically attracted to the turntable 34 with the optical disc interposed therebetween.

At this time, the centering guide of the turntable 34
34a is relatively inserted into the center holes 3a and 4a of the optical disc 3 or 4, and thereby the optical disc 3 or 4 is aligned with the turntable 34.

Then, the designated disc or the external disc is chucked by the turntable 34, the optical disc is rotated from this state, and the optical pickup 36 is reproduced while moving in the radial direction of the optical disc.

(H-4. Other operations) When a command to end the reproduction is issued, the disc transport unit 49 is moved to at least the floor above the chucking position.
Therefore, the pressing of the roller support arms 86, 87 by the projections 157, 157 of the main chassis 17, the pressing of the positioning release lever 158 by the projection 159, and the pressing of the plate holding plate 117 by the projection 160 are released.
The chucking plate 115 is pressed against the insertion guide plate 52 by the plate holding plate 117, and the pull-in roller 55 is elastically contacted to the insertion guide plate 52 with the optical disk in between, and the positioning pins 128, 1
28 is elastically contacted with the outer peripheral edge of the optical disk, and the optical disk is again held by the disk transport unit 49 by these.

Further, when returning the designated disc to the original disc storage chamber, the disc transport unit 49 is moved to a floor facing the disc storage chamber, and when storing an external disc in the disc stocker, the disc transport unit 49 moves the disc. It is moved to the floor corresponding to the empty disc storage room according to the size of the
The movement of 2 and the like are performed as described above, and the optical disk is stored in the disk storage chamber.

When the reproduced external disk is not stored in the disk stocker 2 or when the designated disk is taken out of the outer casing 40, the disk transport unit 49 comes to the uppermost floor position, and the rotating chassis 51 is moved to the entrance / exit facing position. The optical disc is sent out of the outer casing 40 from the disc inlet / outlet 42.

(G. Effect of the Invention) As is apparent from the above description, the disk stocker in the disk reproducing apparatus of the present invention has a large number of disk storage chambers for storing recording medium disks of different sizes arranged in a hierarchy. In the disc stocker, a large-sized disc storage chamber and a small-sized disc storage chamber are alternately arranged, and two large-sized disc storage chambers adjacent to each other with the small-sized disc storage chamber sandwiched therebetween. At least a part of a required mechanism of the disc loading / unloading mechanism is arranged in a portion outside the small size disc storage chamber in the space between the spaces.

Therefore, according to the disc stocker in the disc reproducing apparatus of the present invention, a plurality of types of recording medium discs having different sizes can be mixedly stored in one disc stocker. Only one type can be used, or at least it can be reduced, and the disc stocker does not need to be replaced or at least the labor of replacement can be reduced when using the disc reproducing apparatus. Since at least a part of the mechanism necessary for the stocker of the kind is arranged in a part of the space inside the stocker which is not used for housing the recording medium disc, the outer shape thereof can be reduced.

In the above embodiment, the optical disc having a diameter of 8 cm and the optical disc having a diameter of 12 cm are accommodated, but the type and size of the recording medium disc accommodated in the disc stocker to which the present invention is applicable are as follows. It is not limited to anything, and the number of sizes is 2
The number of recording medium discs is not limited to one, and it is possible to store recording medium discs of three or more sizes in a mixed manner.

Further, the structure of each part of the disk stocker shown in the embodiment is only an example for carrying out the present invention, and the structure of the disk stocker of the present invention is not limited to this. In particular, although the disk stocker is fixedly arranged inside the housing in the embodiments, the present invention can be applied to a disk stocker that can be detachably mounted inside the housing.

[Brief description of drawings]

The drawings show an embodiment in which the disc stocker in the disc reproducing apparatus of the present invention is applied to a disc stocker in an optical disc player. FIG. 1 is a central vertical sectional view with a part omitted, and FIG. 2 is an outer casing. FIG. 3 is a plan view of the whole player shown with the notches cut out, FIG. 3 is a perspective view showing the chassis part, the reproducing part, the cam slider and the disc stocker, and FIG. 4 is the second part of the disc stocker in which no optical disc is stored. Fig. 5 is an enlarged sectional view taken along line IV-IV in Fig. 5, Fig. 5 is an exploded perspective view of a shelf block of the disk stocker, Fig. 6 is a perspective view of the stock shelf of the disk stocker seen from below, and Fig. 7 is a disk entrance. FIG. 8 (A) is an enlarged vertical sectional view of the disk entrance opening / closing mechanism in a closed state, and FIG. 8 (B) is an open state. FIG. 9 is an enlarged vertical sectional view of the disk inlet / outlet opening / closing mechanism in a state of being in a state, FIG. 9 is an enlarged sectional view of an essential part taken along line IX-IX in FIG. 2, and FIG. FIG. 11 is a perspective view, FIG. 11 is an enlarged front view of the cam slider, FIG. 12 is a cross-sectional view of the main part taken along the line XII-XII in FIG. 1, and FIG. 13 is an exploded view showing a part of the disc transport unit excluding the elevator. FIG. 14 is a perspective view, FIG. 14 is a horizontal cross-sectional view of the disk transport unit, FIG. 15 is a horizontal cross-sectional view of a main part showing a state in which the rotary chassis is in a position facing the entrance / exit, and FIG. 16 is a drive mechanism provided in the elevator. FIG. 17 (A) is a schematic horizontal view for explaining the movement of the disc positioning mechanism when a large-sized disc is inserted. Cross-sectional view, Fig. 17 (B) shows disc positioning when a small size disc is inserted. FIG. 18 is a schematic horizontal cross-sectional view for explaining the movement of the drive mechanism, and FIG. 18 shows in sequence from (A) to (C) the operations from the ejection of the optical disc stored in the disc stocker to the chucking to the turntable. FIG. 19 (A) is an enlarged vertical cross-sectional view of a main part, FIG. 19 (A) is a horizontal cross-sectional view of a main part for explaining the pushing operation from the disk stocker of a large size disc, and FIG. FIG. 20 (A) is a horizontal cross-sectional view of the main part for explaining the pushing operation from the disk, FIG. 20 (A) is a horizontal cross-sectional view of the main part for explaining the storing operation of the large size disk in the disk stocker 8] is a horizontal cross-sectional view of a main part for explaining an operation of storing a small size disc in a disc stocker. Explanation of symbols 1 ... Disc playback device, 2 ... Disc stocker,
3 ... (Large size) recording medium disc, 4 ... (Small size) recording medium disc, 10 ... Large size disc storage chamber, 19 ... Small size disc storage chamber, 20, 21, 2
4, 27 ...... Disc loading / unloading mechanism

Claims (1)

[Scope of utility model registration request] 1. A disk stocker in which a large number of disk storage chambers for individually storing a plurality of recording medium disks are arranged in a hierarchy, and the disk storage chambers are for large size and for small size. At least one of the required mechanisms of the disc loading / unloading mechanism in the portion outside the small size disc storage chamber of the space between the two large size disc storage chambers, which are arranged alternately with each other, sandwiching the small size disc storage chamber. A disc stocker in a disc playback device characterized by arranging a part